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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /scripts/mod
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/mod')
-rw-r--r--scripts/mod/.gitignore5
-rw-r--r--scripts/mod/Makefile28
-rw-r--r--scripts/mod/devicetable-offsets.c271
-rw-r--r--scripts/mod/empty.c1
-rw-r--r--scripts/mod/file2alias.c1635
-rw-r--r--scripts/mod/list.h213
-rw-r--r--scripts/mod/mk_elfconfig.c57
-rw-r--r--scripts/mod/modpost.c2390
-rw-r--r--scripts/mod/modpost.h193
-rw-r--r--scripts/mod/sumversion.c410
10 files changed, 5203 insertions, 0 deletions
diff --git a/scripts/mod/.gitignore b/scripts/mod/.gitignore
new file mode 100644
index 0000000000..0465ec33c9
--- /dev/null
+++ b/scripts/mod/.gitignore
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+/devicetable-offsets.h
+/elfconfig.h
+/mk_elfconfig
+/modpost
diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
new file mode 100644
index 0000000000..c9e38ad937
--- /dev/null
+++ b/scripts/mod/Makefile
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-2.0
+OBJECT_FILES_NON_STANDARD := y
+CFLAGS_REMOVE_empty.o += $(CC_FLAGS_LTO)
+
+hostprogs-always-y += modpost mk_elfconfig
+always-y += empty.o
+
+modpost-objs := modpost.o file2alias.o sumversion.o
+
+devicetable-offsets-file := devicetable-offsets.h
+
+$(obj)/$(devicetable-offsets-file): $(obj)/devicetable-offsets.s FORCE
+ $(call filechk,offsets,__DEVICETABLE_OFFSETS_H__)
+
+targets += $(devicetable-offsets-file) devicetable-offsets.s
+
+# dependencies on generated files need to be listed explicitly
+
+$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
+$(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file)
+
+quiet_cmd_elfconfig = MKELF $@
+ cmd_elfconfig = $(obj)/mk_elfconfig < $< > $@
+
+$(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
+ $(call if_changed,elfconfig)
+
+targets += elfconfig.h
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
new file mode 100644
index 0000000000..abe65f8968
--- /dev/null
+++ b/scripts/mod/devicetable-offsets.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kbuild.h>
+#include <linux/mod_devicetable.h>
+
+#define DEVID(devid) DEFINE(SIZE_##devid, sizeof(struct devid))
+#define DEVID_FIELD(devid, field) \
+ DEFINE(OFF_##devid##_##field, offsetof(struct devid, field))
+
+int main(void)
+{
+ DEVID(usb_device_id);
+ DEVID_FIELD(usb_device_id, match_flags);
+ DEVID_FIELD(usb_device_id, idVendor);
+ DEVID_FIELD(usb_device_id, idProduct);
+ DEVID_FIELD(usb_device_id, bcdDevice_lo);
+ DEVID_FIELD(usb_device_id, bcdDevice_hi);
+ DEVID_FIELD(usb_device_id, bDeviceClass);
+ DEVID_FIELD(usb_device_id, bDeviceSubClass);
+ DEVID_FIELD(usb_device_id, bDeviceProtocol);
+ DEVID_FIELD(usb_device_id, bInterfaceClass);
+ DEVID_FIELD(usb_device_id, bInterfaceSubClass);
+ DEVID_FIELD(usb_device_id, bInterfaceProtocol);
+ DEVID_FIELD(usb_device_id, bInterfaceNumber);
+
+ DEVID(hid_device_id);
+ DEVID_FIELD(hid_device_id, bus);
+ DEVID_FIELD(hid_device_id, group);
+ DEVID_FIELD(hid_device_id, vendor);
+ DEVID_FIELD(hid_device_id, product);
+
+ DEVID(ieee1394_device_id);
+ DEVID_FIELD(ieee1394_device_id, match_flags);
+ DEVID_FIELD(ieee1394_device_id, vendor_id);
+ DEVID_FIELD(ieee1394_device_id, model_id);
+ DEVID_FIELD(ieee1394_device_id, specifier_id);
+ DEVID_FIELD(ieee1394_device_id, version);
+
+ DEVID(pci_device_id);
+ DEVID_FIELD(pci_device_id, vendor);
+ DEVID_FIELD(pci_device_id, device);
+ DEVID_FIELD(pci_device_id, subvendor);
+ DEVID_FIELD(pci_device_id, subdevice);
+ DEVID_FIELD(pci_device_id, class);
+ DEVID_FIELD(pci_device_id, class_mask);
+ DEVID_FIELD(pci_device_id, override_only);
+
+ DEVID(ccw_device_id);
+ DEVID_FIELD(ccw_device_id, match_flags);
+ DEVID_FIELD(ccw_device_id, cu_type);
+ DEVID_FIELD(ccw_device_id, cu_model);
+ DEVID_FIELD(ccw_device_id, dev_type);
+ DEVID_FIELD(ccw_device_id, dev_model);
+
+ DEVID(ap_device_id);
+ DEVID_FIELD(ap_device_id, dev_type);
+
+ DEVID(css_device_id);
+ DEVID_FIELD(css_device_id, type);
+
+ DEVID(serio_device_id);
+ DEVID_FIELD(serio_device_id, type);
+ DEVID_FIELD(serio_device_id, proto);
+ DEVID_FIELD(serio_device_id, id);
+ DEVID_FIELD(serio_device_id, extra);
+
+ DEVID(acpi_device_id);
+ DEVID_FIELD(acpi_device_id, id);
+ DEVID_FIELD(acpi_device_id, cls);
+ DEVID_FIELD(acpi_device_id, cls_msk);
+
+ DEVID(pnp_device_id);
+ DEVID_FIELD(pnp_device_id, id);
+
+ DEVID(pnp_card_device_id);
+ DEVID_FIELD(pnp_card_device_id, devs);
+
+ DEVID(pcmcia_device_id);
+ DEVID_FIELD(pcmcia_device_id, match_flags);
+ DEVID_FIELD(pcmcia_device_id, manf_id);
+ DEVID_FIELD(pcmcia_device_id, card_id);
+ DEVID_FIELD(pcmcia_device_id, func_id);
+ DEVID_FIELD(pcmcia_device_id, function);
+ DEVID_FIELD(pcmcia_device_id, device_no);
+ DEVID_FIELD(pcmcia_device_id, prod_id_hash);
+
+ DEVID(of_device_id);
+ DEVID_FIELD(of_device_id, name);
+ DEVID_FIELD(of_device_id, type);
+ DEVID_FIELD(of_device_id, compatible);
+
+ DEVID(vio_device_id);
+ DEVID_FIELD(vio_device_id, type);
+ DEVID_FIELD(vio_device_id, compat);
+
+ DEVID(input_device_id);
+ DEVID_FIELD(input_device_id, flags);
+ DEVID_FIELD(input_device_id, bustype);
+ DEVID_FIELD(input_device_id, vendor);
+ DEVID_FIELD(input_device_id, product);
+ DEVID_FIELD(input_device_id, version);
+ DEVID_FIELD(input_device_id, evbit);
+ DEVID_FIELD(input_device_id, keybit);
+ DEVID_FIELD(input_device_id, relbit);
+ DEVID_FIELD(input_device_id, absbit);
+ DEVID_FIELD(input_device_id, mscbit);
+ DEVID_FIELD(input_device_id, ledbit);
+ DEVID_FIELD(input_device_id, sndbit);
+ DEVID_FIELD(input_device_id, ffbit);
+ DEVID_FIELD(input_device_id, swbit);
+
+ DEVID(eisa_device_id);
+ DEVID_FIELD(eisa_device_id, sig);
+
+ DEVID(parisc_device_id);
+ DEVID_FIELD(parisc_device_id, hw_type);
+ DEVID_FIELD(parisc_device_id, hversion);
+ DEVID_FIELD(parisc_device_id, hversion_rev);
+ DEVID_FIELD(parisc_device_id, sversion);
+
+ DEVID(sdio_device_id);
+ DEVID_FIELD(sdio_device_id, class);
+ DEVID_FIELD(sdio_device_id, vendor);
+ DEVID_FIELD(sdio_device_id, device);
+
+ DEVID(ssb_device_id);
+ DEVID_FIELD(ssb_device_id, vendor);
+ DEVID_FIELD(ssb_device_id, coreid);
+ DEVID_FIELD(ssb_device_id, revision);
+
+ DEVID(bcma_device_id);
+ DEVID_FIELD(bcma_device_id, manuf);
+ DEVID_FIELD(bcma_device_id, id);
+ DEVID_FIELD(bcma_device_id, rev);
+ DEVID_FIELD(bcma_device_id, class);
+
+ DEVID(virtio_device_id);
+ DEVID_FIELD(virtio_device_id, device);
+ DEVID_FIELD(virtio_device_id, vendor);
+
+ DEVID(hv_vmbus_device_id);
+ DEVID_FIELD(hv_vmbus_device_id, guid);
+
+ DEVID(rpmsg_device_id);
+ DEVID_FIELD(rpmsg_device_id, name);
+
+ DEVID(i2c_device_id);
+ DEVID_FIELD(i2c_device_id, name);
+
+ DEVID(i3c_device_id);
+ DEVID_FIELD(i3c_device_id, match_flags);
+ DEVID_FIELD(i3c_device_id, dcr);
+ DEVID_FIELD(i3c_device_id, manuf_id);
+ DEVID_FIELD(i3c_device_id, part_id);
+ DEVID_FIELD(i3c_device_id, extra_info);
+
+ DEVID(spi_device_id);
+ DEVID_FIELD(spi_device_id, name);
+
+ DEVID(dmi_system_id);
+ DEVID_FIELD(dmi_system_id, matches);
+
+ DEVID(platform_device_id);
+ DEVID_FIELD(platform_device_id, name);
+
+ DEVID(mdio_device_id);
+ DEVID_FIELD(mdio_device_id, phy_id);
+ DEVID_FIELD(mdio_device_id, phy_id_mask);
+
+ DEVID(zorro_device_id);
+ DEVID_FIELD(zorro_device_id, id);
+
+ DEVID(isapnp_device_id);
+ DEVID_FIELD(isapnp_device_id, vendor);
+ DEVID_FIELD(isapnp_device_id, function);
+
+ DEVID(ipack_device_id);
+ DEVID_FIELD(ipack_device_id, format);
+ DEVID_FIELD(ipack_device_id, vendor);
+ DEVID_FIELD(ipack_device_id, device);
+
+ DEVID(amba_id);
+ DEVID_FIELD(amba_id, id);
+ DEVID_FIELD(amba_id, mask);
+
+ DEVID(mips_cdmm_device_id);
+ DEVID_FIELD(mips_cdmm_device_id, type);
+
+ DEVID(x86_cpu_id);
+ DEVID_FIELD(x86_cpu_id, feature);
+ DEVID_FIELD(x86_cpu_id, family);
+ DEVID_FIELD(x86_cpu_id, model);
+ DEVID_FIELD(x86_cpu_id, vendor);
+
+ DEVID(cpu_feature);
+ DEVID_FIELD(cpu_feature, feature);
+
+ DEVID(mei_cl_device_id);
+ DEVID_FIELD(mei_cl_device_id, name);
+ DEVID_FIELD(mei_cl_device_id, uuid);
+ DEVID_FIELD(mei_cl_device_id, version);
+
+ DEVID(rio_device_id);
+ DEVID_FIELD(rio_device_id, did);
+ DEVID_FIELD(rio_device_id, vid);
+ DEVID_FIELD(rio_device_id, asm_did);
+ DEVID_FIELD(rio_device_id, asm_vid);
+
+ DEVID(ulpi_device_id);
+ DEVID_FIELD(ulpi_device_id, vendor);
+ DEVID_FIELD(ulpi_device_id, product);
+
+ DEVID(hda_device_id);
+ DEVID_FIELD(hda_device_id, vendor_id);
+ DEVID_FIELD(hda_device_id, rev_id);
+ DEVID_FIELD(hda_device_id, api_version);
+
+ DEVID(sdw_device_id);
+ DEVID_FIELD(sdw_device_id, mfg_id);
+ DEVID_FIELD(sdw_device_id, part_id);
+ DEVID_FIELD(sdw_device_id, sdw_version);
+ DEVID_FIELD(sdw_device_id, class_id);
+
+ DEVID(fsl_mc_device_id);
+ DEVID_FIELD(fsl_mc_device_id, vendor);
+ DEVID_FIELD(fsl_mc_device_id, obj_type);
+
+ DEVID(tb_service_id);
+ DEVID_FIELD(tb_service_id, match_flags);
+ DEVID_FIELD(tb_service_id, protocol_key);
+ DEVID_FIELD(tb_service_id, protocol_id);
+ DEVID_FIELD(tb_service_id, protocol_version);
+ DEVID_FIELD(tb_service_id, protocol_revision);
+
+ DEVID(typec_device_id);
+ DEVID_FIELD(typec_device_id, svid);
+ DEVID_FIELD(typec_device_id, mode);
+
+ DEVID(tee_client_device_id);
+ DEVID_FIELD(tee_client_device_id, uuid);
+
+ DEVID(wmi_device_id);
+ DEVID_FIELD(wmi_device_id, guid_string);
+
+ DEVID(mhi_device_id);
+ DEVID_FIELD(mhi_device_id, chan);
+
+ DEVID(auxiliary_device_id);
+ DEVID_FIELD(auxiliary_device_id, name);
+
+ DEVID(ssam_device_id);
+ DEVID_FIELD(ssam_device_id, match_flags);
+ DEVID_FIELD(ssam_device_id, domain);
+ DEVID_FIELD(ssam_device_id, category);
+ DEVID_FIELD(ssam_device_id, target);
+ DEVID_FIELD(ssam_device_id, instance);
+ DEVID_FIELD(ssam_device_id, function);
+
+ DEVID(dfl_device_id);
+ DEVID_FIELD(dfl_device_id, type);
+ DEVID_FIELD(dfl_device_id, feature_id);
+
+ DEVID(ishtp_device_id);
+ DEVID_FIELD(ishtp_device_id, guid);
+
+ DEVID(cdx_device_id);
+ DEVID_FIELD(cdx_device_id, vendor);
+ DEVID_FIELD(cdx_device_id, device);
+ DEVID_FIELD(cdx_device_id, override_only);
+
+ return 0;
+}
diff --git a/scripts/mod/empty.c b/scripts/mod/empty.c
new file mode 100644
index 0000000000..49839cc4ff
--- /dev/null
+++ b/scripts/mod/empty.c
@@ -0,0 +1 @@
+/* empty file to figure out endianness / word size */
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
new file mode 100644
index 0000000000..6583b36dbe
--- /dev/null
+++ b/scripts/mod/file2alias.c
@@ -0,0 +1,1635 @@
+/* Simple code to turn various tables in an ELF file into alias definitions.
+ * This deals with kernel datastructures where they should be
+ * dealt with: in the kernel source.
+ *
+ * Copyright 2002-2003 Rusty Russell, IBM Corporation
+ * 2003 Kai Germaschewski
+ *
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+
+#include "modpost.h"
+#include "devicetable-offsets.h"
+
+/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
+ * use either stdint.h or inttypes.h for the rest. */
+#if KERNEL_ELFCLASS == ELFCLASS32
+typedef Elf32_Addr kernel_ulong_t;
+#define BITS_PER_LONG 32
+#else
+typedef Elf64_Addr kernel_ulong_t;
+#define BITS_PER_LONG 64
+#endif
+#ifdef __sun__
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+
+#include <ctype.h>
+#include <stdbool.h>
+
+typedef uint32_t __u32;
+typedef uint16_t __u16;
+typedef unsigned char __u8;
+
+/* UUID types for backward compatibility, don't use in new code */
+typedef struct {
+ __u8 b[16];
+} guid_t;
+
+typedef struct {
+ __u8 b[16];
+} uuid_t;
+
+#define UUID_STRING_LEN 36
+
+/* MEI UUID type, don't use anywhere else */
+typedef struct {
+ __u8 b[16];
+} uuid_le;
+
+/* Big exception to the "don't include kernel headers into userspace, which
+ * even potentially has different endianness and word sizes, since
+ * we handle those differences explicitly below */
+#include "../../include/linux/mod_devicetable.h"
+
+/* This array collects all instances that use the generic do_table */
+struct devtable {
+ const char *device_id; /* name of table, __mod_<name>__*_device_table. */
+ unsigned long id_size;
+ int (*do_entry)(const char *filename, void *symval, char *alias);
+};
+
+/* Size of alias provided to do_entry functions */
+#define ALIAS_SIZE 500
+
+/* Define a variable f that holds the value of field f of struct devid
+ * based at address m.
+ */
+#define DEF_FIELD(m, devid, f) \
+ typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
+
+/* Define a variable v that holds the address of field f of struct devid
+ * based at address m. Due to the way typeof works, for a field of type
+ * T[N] the variable has type T(*)[N], _not_ T*.
+ */
+#define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
+ typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
+
+/* Define a variable f that holds the address of field f of struct devid
+ * based at address m. Due to the way typeof works, for a field of type
+ * T[N] the variable has type T(*)[N], _not_ T*.
+ */
+#define DEF_FIELD_ADDR(m, devid, f) \
+ DEF_FIELD_ADDR_VAR(m, devid, f, f)
+
+#define ADD(str, sep, cond, field) \
+do { \
+ strcat(str, sep); \
+ if (cond) \
+ sprintf(str + strlen(str), \
+ sizeof(field) == 1 ? "%02X" : \
+ sizeof(field) == 2 ? "%04X" : \
+ sizeof(field) == 4 ? "%08X" : "", \
+ field); \
+ else \
+ sprintf(str + strlen(str), "*"); \
+} while(0)
+
+/* End in a wildcard, for future extension */
+static inline void add_wildcard(char *str)
+{
+ int len = strlen(str);
+
+ if (str[len - 1] != '*')
+ strcat(str + len, "*");
+}
+
+static inline void add_uuid(char *str, uuid_le uuid)
+{
+ int len = strlen(str);
+
+ sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
+ uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
+ uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
+ uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
+}
+
+static inline void add_guid(char *str, guid_t guid)
+{
+ int len = strlen(str);
+
+ sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
+ guid.b[3], guid.b[2], guid.b[1], guid.b[0],
+ guid.b[5], guid.b[4], guid.b[7], guid.b[6],
+ guid.b[8], guid.b[9], guid.b[10], guid.b[11],
+ guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
+}
+
+/**
+ * Check that sizeof(device_id type) are consistent with size of section
+ * in .o file. If in-consistent then userspace and kernel does not agree
+ * on actual size which is a bug.
+ * Also verify that the final entry in the table is all zeros.
+ * Ignore both checks if build host differ from target host and size differs.
+ **/
+static void device_id_check(const char *modname, const char *device_id,
+ unsigned long size, unsigned long id_size,
+ void *symval)
+{
+ int i;
+
+ if (size % id_size || size < id_size) {
+ fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n"
+ "Fix definition of struct %s_device_id in mod_devicetable.h\n",
+ modname, device_id, id_size, device_id, size, device_id);
+ }
+ /* Verify last one is a terminator */
+ for (i = 0; i < id_size; i++ ) {
+ if (*(uint8_t*)(symval+size-id_size+i)) {
+ fprintf(stderr,
+ "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n",
+ modname, device_id, id_size, size / id_size);
+ for (i = 0; i < id_size; i++ )
+ fprintf(stderr,"0x%02x ",
+ *(uint8_t*)(symval+size-id_size+i) );
+ fprintf(stderr,"\n");
+ fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n",
+ modname, device_id);
+ }
+ }
+}
+
+/* USB is special because the bcdDevice can be matched against a numeric range */
+/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
+static void do_usb_entry(void *symval,
+ unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
+ unsigned char range_lo, unsigned char range_hi,
+ unsigned char max, struct module *mod)
+{
+ char alias[500];
+ DEF_FIELD(symval, usb_device_id, match_flags);
+ DEF_FIELD(symval, usb_device_id, idVendor);
+ DEF_FIELD(symval, usb_device_id, idProduct);
+ DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
+ DEF_FIELD(symval, usb_device_id, bDeviceClass);
+ DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
+ DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
+ DEF_FIELD(symval, usb_device_id, bInterfaceClass);
+ DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
+ DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
+ DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
+
+ strcpy(alias, "usb:");
+ ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
+ idVendor);
+ ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
+ idProduct);
+
+ strcat(alias, "d");
+ if (bcdDevice_initial_digits)
+ sprintf(alias + strlen(alias), "%0*X",
+ bcdDevice_initial_digits, bcdDevice_initial);
+ if (range_lo == range_hi)
+ sprintf(alias + strlen(alias), "%X", range_lo);
+ else if (range_lo > 0 || range_hi < max) {
+ if (range_lo > 0x9 || range_hi < 0xA)
+ sprintf(alias + strlen(alias),
+ "[%X-%X]",
+ range_lo,
+ range_hi);
+ else {
+ sprintf(alias + strlen(alias),
+ range_lo < 0x9 ? "[%X-9" : "[%X",
+ range_lo);
+ sprintf(alias + strlen(alias),
+ range_hi > 0xA ? "A-%X]" : "%X]",
+ range_hi);
+ }
+ }
+ if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
+ strcat(alias, "*");
+
+ ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
+ bDeviceClass);
+ ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
+ bDeviceSubClass);
+ ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
+ bDeviceProtocol);
+ ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
+ bInterfaceClass);
+ ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
+ bInterfaceSubClass);
+ ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
+ bInterfaceProtocol);
+ ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
+ bInterfaceNumber);
+
+ add_wildcard(alias);
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"%s\");\n", alias);
+}
+
+/* Handles increment/decrement of BCD formatted integers */
+/* Returns the previous value, so it works like i++ or i-- */
+static unsigned int incbcd(unsigned int *bcd,
+ int inc,
+ unsigned char max,
+ size_t chars)
+{
+ unsigned int init = *bcd, i, j;
+ unsigned long long c, dec = 0;
+
+ /* If bcd is not in BCD format, just increment */
+ if (max > 0x9) {
+ *bcd += inc;
+ return init;
+ }
+
+ /* Convert BCD to Decimal */
+ for (i=0 ; i < chars ; i++) {
+ c = (*bcd >> (i << 2)) & 0xf;
+ c = c > 9 ? 9 : c; /* force to bcd just in case */
+ for (j=0 ; j < i ; j++)
+ c = c * 10;
+ dec += c;
+ }
+
+ /* Do our increment/decrement */
+ dec += inc;
+ *bcd = 0;
+
+ /* Convert back to BCD */
+ for (i=0 ; i < chars ; i++) {
+ for (c=1,j=0 ; j < i ; j++)
+ c = c * 10;
+ c = (dec / c) % 10;
+ *bcd += c << (i << 2);
+ }
+ return init;
+}
+
+static void do_usb_entry_multi(void *symval, struct module *mod)
+{
+ unsigned int devlo, devhi;
+ unsigned char chi, clo, max;
+ int ndigits;
+
+ DEF_FIELD(symval, usb_device_id, match_flags);
+ DEF_FIELD(symval, usb_device_id, idVendor);
+ DEF_FIELD(symval, usb_device_id, idProduct);
+ DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
+ DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
+ DEF_FIELD(symval, usb_device_id, bDeviceClass);
+ DEF_FIELD(symval, usb_device_id, bInterfaceClass);
+
+ devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
+ bcdDevice_lo : 0x0U;
+ devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
+ bcdDevice_hi : ~0x0U;
+
+ /* Figure out if this entry is in bcd or hex format */
+ max = 0x9; /* Default to decimal format */
+ for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
+ clo = (devlo >> (ndigits << 2)) & 0xf;
+ chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
+ if (clo > max || chi > max) {
+ max = 0xf;
+ break;
+ }
+ }
+
+ /*
+ * Some modules (visor) have empty slots as placeholder for
+ * run-time specification that results in catch-all alias
+ */
+ if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
+ return;
+
+ /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
+ for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
+ clo = devlo & 0xf;
+ chi = devhi & 0xf;
+ if (chi > max) /* If we are in bcd mode, truncate if necessary */
+ chi = max;
+ devlo >>= 4;
+ devhi >>= 4;
+
+ if (devlo == devhi || !ndigits) {
+ do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
+ break;
+ }
+
+ if (clo > 0x0)
+ do_usb_entry(symval,
+ incbcd(&devlo, 1, max,
+ sizeof(bcdDevice_lo) * 2),
+ ndigits, clo, max, max, mod);
+
+ if (chi < max)
+ do_usb_entry(symval,
+ incbcd(&devhi, -1, max,
+ sizeof(bcdDevice_lo) * 2),
+ ndigits, 0x0, chi, max, mod);
+ }
+}
+
+static void do_usb_table(void *symval, unsigned long size,
+ struct module *mod)
+{
+ unsigned int i;
+ const unsigned long id_size = SIZE_usb_device_id;
+
+ device_id_check(mod->name, "usb", size, id_size, symval);
+
+ /* Leave last one: it's the terminator. */
+ size -= id_size;
+
+ for (i = 0; i < size; i += id_size)
+ do_usb_entry_multi(symval + i, mod);
+}
+
+static void do_of_entry_multi(void *symval, struct module *mod)
+{
+ char alias[500];
+ int len;
+ char *tmp;
+
+ DEF_FIELD_ADDR(symval, of_device_id, name);
+ DEF_FIELD_ADDR(symval, of_device_id, type);
+ DEF_FIELD_ADDR(symval, of_device_id, compatible);
+
+ len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
+ (*type)[0] ? *type : "*");
+
+ if ((*compatible)[0])
+ sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
+ *compatible);
+
+ /* Replace all whitespace with underscores */
+ for (tmp = alias; tmp && *tmp; tmp++)
+ if (isspace(*tmp))
+ *tmp = '_';
+
+ buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+ strcat(alias, "C");
+ add_wildcard(alias);
+ buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+}
+
+static void do_of_table(void *symval, unsigned long size,
+ struct module *mod)
+{
+ unsigned int i;
+ const unsigned long id_size = SIZE_of_device_id;
+
+ device_id_check(mod->name, "of", size, id_size, symval);
+
+ /* Leave last one: it's the terminator. */
+ size -= id_size;
+
+ for (i = 0; i < size; i += id_size)
+ do_of_entry_multi(symval + i, mod);
+}
+
+/* Looks like: hid:bNvNpN */
+static int do_hid_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, hid_device_id, bus);
+ DEF_FIELD(symval, hid_device_id, group);
+ DEF_FIELD(symval, hid_device_id, vendor);
+ DEF_FIELD(symval, hid_device_id, product);
+
+ sprintf(alias, "hid:");
+ ADD(alias, "b", bus != HID_BUS_ANY, bus);
+ ADD(alias, "g", group != HID_GROUP_ANY, group);
+ ADD(alias, "v", vendor != HID_ANY_ID, vendor);
+ ADD(alias, "p", product != HID_ANY_ID, product);
+
+ return 1;
+}
+
+/* Looks like: ieee1394:venNmoNspNverN */
+static int do_ieee1394_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, ieee1394_device_id, match_flags);
+ DEF_FIELD(symval, ieee1394_device_id, vendor_id);
+ DEF_FIELD(symval, ieee1394_device_id, model_id);
+ DEF_FIELD(symval, ieee1394_device_id, specifier_id);
+ DEF_FIELD(symval, ieee1394_device_id, version);
+
+ strcpy(alias, "ieee1394:");
+ ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
+ vendor_id);
+ ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
+ model_id);
+ ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
+ specifier_id);
+ ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
+ version);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
+static int do_pci_entry(const char *filename,
+ void *symval, char *alias)
+{
+ /* Class field can be divided into these three. */
+ unsigned char baseclass, subclass, interface,
+ baseclass_mask, subclass_mask, interface_mask;
+
+ DEF_FIELD(symval, pci_device_id, vendor);
+ DEF_FIELD(symval, pci_device_id, device);
+ DEF_FIELD(symval, pci_device_id, subvendor);
+ DEF_FIELD(symval, pci_device_id, subdevice);
+ DEF_FIELD(symval, pci_device_id, class);
+ DEF_FIELD(symval, pci_device_id, class_mask);
+ DEF_FIELD(symval, pci_device_id, override_only);
+
+ switch (override_only) {
+ case 0:
+ strcpy(alias, "pci:");
+ break;
+ case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
+ strcpy(alias, "vfio_pci:");
+ break;
+ default:
+ warn("Unknown PCI driver_override alias %08X\n",
+ override_only);
+ return 0;
+ }
+
+ ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
+ ADD(alias, "d", device != PCI_ANY_ID, device);
+ ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
+ ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
+
+ baseclass = (class) >> 16;
+ baseclass_mask = (class_mask) >> 16;
+ subclass = (class) >> 8;
+ subclass_mask = (class_mask) >> 8;
+ interface = class;
+ interface_mask = class_mask;
+
+ if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
+ || (subclass_mask != 0 && subclass_mask != 0xFF)
+ || (interface_mask != 0 && interface_mask != 0xFF)) {
+ warn("Can't handle masks in %s:%04X\n",
+ filename, class_mask);
+ return 0;
+ }
+
+ ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
+ ADD(alias, "sc", subclass_mask == 0xFF, subclass);
+ ADD(alias, "i", interface_mask == 0xFF, interface);
+ add_wildcard(alias);
+ return 1;
+}
+
+/* looks like: "ccw:tNmNdtNdmN" */
+static int do_ccw_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, ccw_device_id, match_flags);
+ DEF_FIELD(symval, ccw_device_id, cu_type);
+ DEF_FIELD(symval, ccw_device_id, cu_model);
+ DEF_FIELD(symval, ccw_device_id, dev_type);
+ DEF_FIELD(symval, ccw_device_id, dev_model);
+
+ strcpy(alias, "ccw:");
+ ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
+ cu_type);
+ ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
+ cu_model);
+ ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
+ dev_type);
+ ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
+ dev_model);
+ add_wildcard(alias);
+ return 1;
+}
+
+/* looks like: "ap:tN" */
+static int do_ap_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, ap_device_id, dev_type);
+
+ sprintf(alias, "ap:t%02X*", dev_type);
+ return 1;
+}
+
+/* looks like: "css:tN" */
+static int do_css_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, css_device_id, type);
+
+ sprintf(alias, "css:t%01X", type);
+ return 1;
+}
+
+/* Looks like: "serio:tyNprNidNexN" */
+static int do_serio_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, serio_device_id, type);
+ DEF_FIELD(symval, serio_device_id, proto);
+ DEF_FIELD(symval, serio_device_id, id);
+ DEF_FIELD(symval, serio_device_id, extra);
+
+ strcpy(alias, "serio:");
+ ADD(alias, "ty", type != SERIO_ANY, type);
+ ADD(alias, "pr", proto != SERIO_ANY, proto);
+ ADD(alias, "id", id != SERIO_ANY, id);
+ ADD(alias, "ex", extra != SERIO_ANY, extra);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
+ * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
+ *
+ * NOTE: Each driver should use one of the following : _HID, _CIDs
+ * or _CLS. Also, bb, ss, and pp can be substituted with ??
+ * as don't care byte.
+ */
+static int do_acpi_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, acpi_device_id, id);
+ DEF_FIELD_ADDR(symval, acpi_device_id, cls);
+ DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
+
+ if (id && strlen((const char *)*id))
+ sprintf(alias, "acpi*:%s:*", *id);
+ else if (cls) {
+ int i, byte_shift, cnt = 0;
+ unsigned int msk;
+
+ sprintf(&alias[cnt], "acpi*:");
+ cnt = 6;
+ for (i = 1; i <= 3; i++) {
+ byte_shift = 8 * (3-i);
+ msk = (*cls_msk >> byte_shift) & 0xFF;
+ if (msk)
+ sprintf(&alias[cnt], "%02x",
+ (*cls >> byte_shift) & 0xFF);
+ else
+ sprintf(&alias[cnt], "??");
+ cnt += 2;
+ }
+ sprintf(&alias[cnt], ":*");
+ }
+ return 1;
+}
+
+/* looks like: "pnp:dD" */
+static void do_pnp_device_entry(void *symval, unsigned long size,
+ struct module *mod)
+{
+ const unsigned long id_size = SIZE_pnp_device_id;
+ const unsigned int count = (size / id_size)-1;
+ unsigned int i;
+
+ device_id_check(mod->name, "pnp", size, id_size, symval);
+
+ for (i = 0; i < count; i++) {
+ DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
+ char acpi_id[sizeof(*id)];
+ int j;
+
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
+
+ /* fix broken pnp bus lowercasing */
+ for (j = 0; j < sizeof(acpi_id); j++)
+ acpi_id[j] = toupper((*id)[j]);
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
+ }
+}
+
+/* looks like: "pnp:dD" for every device of the card */
+static void do_pnp_card_entries(void *symval, unsigned long size,
+ struct module *mod)
+{
+ const unsigned long id_size = SIZE_pnp_card_device_id;
+ const unsigned int count = (size / id_size)-1;
+ unsigned int i;
+
+ device_id_check(mod->name, "pnp", size, id_size, symval);
+
+ for (i = 0; i < count; i++) {
+ unsigned int j;
+ DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
+
+ for (j = 0; j < PNP_MAX_DEVICES; j++) {
+ const char *id = (char *)(*devs)[j].id;
+ int i2, j2;
+ int dup = 0;
+
+ if (!id[0])
+ break;
+
+ /* find duplicate, already added value */
+ for (i2 = 0; i2 < i && !dup; i2++) {
+ DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
+ pnp_card_device_id,
+ devs, devs_dup);
+
+ for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
+ const char *id2 =
+ (char *)(*devs_dup)[j2].id;
+
+ if (!id2[0])
+ break;
+
+ if (!strcmp(id, id2)) {
+ dup = 1;
+ break;
+ }
+ }
+ }
+
+ /* add an individual alias for every device entry */
+ if (!dup) {
+ char acpi_id[PNP_ID_LEN];
+ int k;
+
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
+
+ /* fix broken pnp bus lowercasing */
+ for (k = 0; k < sizeof(acpi_id); k++)
+ acpi_id[k] = toupper(id[k]);
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
+ }
+ }
+ }
+}
+
+/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
+static int do_pcmcia_entry(const char *filename,
+ void *symval, char *alias)
+{
+ unsigned int i;
+ DEF_FIELD(symval, pcmcia_device_id, match_flags);
+ DEF_FIELD(symval, pcmcia_device_id, manf_id);
+ DEF_FIELD(symval, pcmcia_device_id, card_id);
+ DEF_FIELD(symval, pcmcia_device_id, func_id);
+ DEF_FIELD(symval, pcmcia_device_id, function);
+ DEF_FIELD(symval, pcmcia_device_id, device_no);
+ DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
+
+ for (i=0; i<4; i++) {
+ (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
+ }
+
+ strcpy(alias, "pcmcia:");
+ ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
+ manf_id);
+ ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
+ card_id);
+ ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
+ func_id);
+ ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
+ function);
+ ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
+ device_no);
+ ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
+ ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
+ ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
+ ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+static int do_vio_entry(const char *filename, void *symval,
+ char *alias)
+{
+ char *tmp;
+ DEF_FIELD_ADDR(symval, vio_device_id, type);
+ DEF_FIELD_ADDR(symval, vio_device_id, compat);
+
+ sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
+ (*compat)[0] ? *compat : "*");
+
+ /* Replace all whitespace with underscores */
+ for (tmp = alias; tmp && *tmp; tmp++)
+ if (isspace (*tmp))
+ *tmp = '_';
+
+ add_wildcard(alias);
+ return 1;
+}
+
+static void do_input(char *alias,
+ kernel_ulong_t *arr, unsigned int min, unsigned int max)
+{
+ unsigned int i;
+
+ for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
+ arr[i] = TO_NATIVE(arr[i]);
+ for (i = min; i < max; i++)
+ if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
+ sprintf(alias + strlen(alias), "%X,*", i);
+}
+
+/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
+static int do_input_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, input_device_id, flags);
+ DEF_FIELD(symval, input_device_id, bustype);
+ DEF_FIELD(symval, input_device_id, vendor);
+ DEF_FIELD(symval, input_device_id, product);
+ DEF_FIELD(symval, input_device_id, version);
+ DEF_FIELD_ADDR(symval, input_device_id, evbit);
+ DEF_FIELD_ADDR(symval, input_device_id, keybit);
+ DEF_FIELD_ADDR(symval, input_device_id, relbit);
+ DEF_FIELD_ADDR(symval, input_device_id, absbit);
+ DEF_FIELD_ADDR(symval, input_device_id, mscbit);
+ DEF_FIELD_ADDR(symval, input_device_id, ledbit);
+ DEF_FIELD_ADDR(symval, input_device_id, sndbit);
+ DEF_FIELD_ADDR(symval, input_device_id, ffbit);
+ DEF_FIELD_ADDR(symval, input_device_id, swbit);
+
+ sprintf(alias, "input:");
+
+ ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
+ ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
+ ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
+ ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
+
+ sprintf(alias + strlen(alias), "-e*");
+ if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
+ do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
+ sprintf(alias + strlen(alias), "k*");
+ if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
+ do_input(alias, *keybit,
+ INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
+ INPUT_DEVICE_ID_KEY_MAX);
+ sprintf(alias + strlen(alias), "r*");
+ if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
+ do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
+ sprintf(alias + strlen(alias), "a*");
+ if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
+ do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
+ sprintf(alias + strlen(alias), "m*");
+ if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
+ do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
+ sprintf(alias + strlen(alias), "l*");
+ if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
+ do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
+ sprintf(alias + strlen(alias), "s*");
+ if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
+ do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
+ sprintf(alias + strlen(alias), "f*");
+ if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
+ do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
+ sprintf(alias + strlen(alias), "w*");
+ if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
+ do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
+ return 1;
+}
+
+static int do_eisa_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, eisa_device_id, sig);
+ if (sig[0])
+ sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
+ else
+ strcat(alias, "*");
+ return 1;
+}
+
+/* Looks like: parisc:tNhvNrevNsvN */
+static int do_parisc_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, parisc_device_id, hw_type);
+ DEF_FIELD(symval, parisc_device_id, hversion);
+ DEF_FIELD(symval, parisc_device_id, hversion_rev);
+ DEF_FIELD(symval, parisc_device_id, sversion);
+
+ strcpy(alias, "parisc:");
+ ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
+ ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
+ ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
+ ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: sdio:cNvNdN. */
+static int do_sdio_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, sdio_device_id, class);
+ DEF_FIELD(symval, sdio_device_id, vendor);
+ DEF_FIELD(symval, sdio_device_id, device);
+
+ strcpy(alias, "sdio:");
+ ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
+ ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
+ ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: ssb:vNidNrevN. */
+static int do_ssb_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, ssb_device_id, vendor);
+ DEF_FIELD(symval, ssb_device_id, coreid);
+ DEF_FIELD(symval, ssb_device_id, revision);
+
+ strcpy(alias, "ssb:");
+ ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
+ ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
+ ADD(alias, "rev", revision != SSB_ANY_REV, revision);
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: bcma:mNidNrevNclN. */
+static int do_bcma_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, bcma_device_id, manuf);
+ DEF_FIELD(symval, bcma_device_id, id);
+ DEF_FIELD(symval, bcma_device_id, rev);
+ DEF_FIELD(symval, bcma_device_id, class);
+
+ strcpy(alias, "bcma:");
+ ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
+ ADD(alias, "id", id != BCMA_ANY_ID, id);
+ ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
+ ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: virtio:dNvN */
+static int do_virtio_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, virtio_device_id, device);
+ DEF_FIELD(symval, virtio_device_id, vendor);
+
+ strcpy(alias, "virtio:");
+ ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
+ ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/*
+ * Looks like: vmbus:guid
+ * Each byte of the guid will be represented by two hex characters
+ * in the name.
+ */
+
+static int do_vmbus_entry(const char *filename, void *symval,
+ char *alias)
+{
+ int i;
+ DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
+ char guid_name[(sizeof(*guid) + 1) * 2];
+
+ for (i = 0; i < (sizeof(*guid) * 2); i += 2)
+ sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
+
+ strcpy(alias, "vmbus:");
+ strcat(alias, guid_name);
+
+ return 1;
+}
+
+/* Looks like: rpmsg:S */
+static int do_rpmsg_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
+ sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
+
+ return 1;
+}
+
+/* Looks like: i2c:S */
+static int do_i2c_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, i2c_device_id, name);
+ sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
+
+ return 1;
+}
+
+static int do_i3c_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, i3c_device_id, match_flags);
+ DEF_FIELD(symval, i3c_device_id, dcr);
+ DEF_FIELD(symval, i3c_device_id, manuf_id);
+ DEF_FIELD(symval, i3c_device_id, part_id);
+ DEF_FIELD(symval, i3c_device_id, extra_info);
+
+ strcpy(alias, "i3c:");
+ ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
+ ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
+ ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
+ ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
+
+ return 1;
+}
+
+/* Looks like: spi:S */
+static int do_spi_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, spi_device_id, name);
+ sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
+
+ return 1;
+}
+
+static const struct dmifield {
+ const char *prefix;
+ int field;
+} dmi_fields[] = {
+ { "bvn", DMI_BIOS_VENDOR },
+ { "bvr", DMI_BIOS_VERSION },
+ { "bd", DMI_BIOS_DATE },
+ { "br", DMI_BIOS_RELEASE },
+ { "efr", DMI_EC_FIRMWARE_RELEASE },
+ { "svn", DMI_SYS_VENDOR },
+ { "pn", DMI_PRODUCT_NAME },
+ { "pvr", DMI_PRODUCT_VERSION },
+ { "rvn", DMI_BOARD_VENDOR },
+ { "rn", DMI_BOARD_NAME },
+ { "rvr", DMI_BOARD_VERSION },
+ { "cvn", DMI_CHASSIS_VENDOR },
+ { "ct", DMI_CHASSIS_TYPE },
+ { "cvr", DMI_CHASSIS_VERSION },
+ { NULL, DMI_NONE }
+};
+
+static void dmi_ascii_filter(char *d, const char *s)
+{
+ /* Filter out characters we don't want to see in the modalias string */
+ for (; *s; s++)
+ if (*s > ' ' && *s < 127 && *s != ':')
+ *(d++) = *s;
+
+ *d = 0;
+}
+
+
+static int do_dmi_entry(const char *filename, void *symval,
+ char *alias)
+{
+ int i, j;
+ DEF_FIELD_ADDR(symval, dmi_system_id, matches);
+ sprintf(alias, "dmi*");
+
+ for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
+ for (j = 0; j < 4; j++) {
+ if ((*matches)[j].slot &&
+ (*matches)[j].slot == dmi_fields[i].field) {
+ sprintf(alias + strlen(alias), ":%s*",
+ dmi_fields[i].prefix);
+ dmi_ascii_filter(alias + strlen(alias),
+ (*matches)[j].substr);
+ strcat(alias, "*");
+ }
+ }
+ }
+
+ strcat(alias, ":");
+ return 1;
+}
+
+static int do_platform_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, platform_device_id, name);
+ sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
+ return 1;
+}
+
+static int do_mdio_entry(const char *filename,
+ void *symval, char *alias)
+{
+ int i;
+ DEF_FIELD(symval, mdio_device_id, phy_id);
+ DEF_FIELD(symval, mdio_device_id, phy_id_mask);
+
+ alias += sprintf(alias, MDIO_MODULE_PREFIX);
+
+ for (i = 0; i < 32; i++) {
+ if (!((phy_id_mask >> (31-i)) & 1))
+ *(alias++) = '?';
+ else if ((phy_id >> (31-i)) & 1)
+ *(alias++) = '1';
+ else
+ *(alias++) = '0';
+ }
+
+ /* Terminate the string */
+ *alias = 0;
+
+ return 1;
+}
+
+/* Looks like: zorro:iN. */
+static int do_zorro_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, zorro_device_id, id);
+ strcpy(alias, "zorro:");
+ ADD(alias, "i", id != ZORRO_WILDCARD, id);
+ return 1;
+}
+
+/* looks like: "pnp:dD" */
+static int do_isapnp_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, isapnp_device_id, vendor);
+ DEF_FIELD(symval, isapnp_device_id, function);
+ sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
+ 'A' + ((vendor >> 2) & 0x3f) - 1,
+ 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
+ 'A' + ((vendor >> 8) & 0x1f) - 1,
+ (function >> 4) & 0x0f, function & 0x0f,
+ (function >> 12) & 0x0f, (function >> 8) & 0x0f);
+ return 1;
+}
+
+/* Looks like: "ipack:fNvNdN". */
+static int do_ipack_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, ipack_device_id, format);
+ DEF_FIELD(symval, ipack_device_id, vendor);
+ DEF_FIELD(symval, ipack_device_id, device);
+ strcpy(alias, "ipack:");
+ ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
+ ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
+ ADD(alias, "d", device != IPACK_ANY_ID, device);
+ add_wildcard(alias);
+ return 1;
+}
+
+/*
+ * Append a match expression for a single masked hex digit.
+ * outp points to a pointer to the character at which to append.
+ * *outp is updated on return to point just after the appended text,
+ * to facilitate further appending.
+ */
+static void append_nibble_mask(char **outp,
+ unsigned int nibble, unsigned int mask)
+{
+ char *p = *outp;
+ unsigned int i;
+
+ switch (mask) {
+ case 0:
+ *p++ = '?';
+ break;
+
+ case 0xf:
+ p += sprintf(p, "%X", nibble);
+ break;
+
+ default:
+ /*
+ * Dumbly emit a match pattern for all possible matching
+ * digits. This could be improved in some cases using ranges,
+ * but it has the advantage of being trivially correct, and is
+ * often optimal.
+ */
+ *p++ = '[';
+ for (i = 0; i < 0x10; i++)
+ if ((i & mask) == nibble)
+ p += sprintf(p, "%X", i);
+ *p++ = ']';
+ }
+
+ /* Ensure that the string remains NUL-terminated: */
+ *p = '\0';
+
+ /* Advance the caller's end-of-string pointer: */
+ *outp = p;
+}
+
+/*
+ * looks like: "amba:dN"
+ *
+ * N is exactly 8 digits, where each is an upper-case hex digit, or
+ * a ? or [] pattern matching exactly one digit.
+ */
+static int do_amba_entry(const char *filename,
+ void *symval, char *alias)
+{
+ unsigned int digit;
+ char *p = alias;
+ DEF_FIELD(symval, amba_id, id);
+ DEF_FIELD(symval, amba_id, mask);
+
+ if ((id & mask) != id)
+ fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n",
+ filename, id, mask);
+
+ p += sprintf(alias, "amba:d");
+ for (digit = 0; digit < 8; digit++)
+ append_nibble_mask(&p,
+ (id >> (4 * (7 - digit))) & 0xf,
+ (mask >> (4 * (7 - digit))) & 0xf);
+
+ return 1;
+}
+
+/*
+ * looks like: "mipscdmm:tN"
+ *
+ * N is exactly 2 digits, where each is an upper-case hex digit, or
+ * a ? or [] pattern matching exactly one digit.
+ */
+static int do_mips_cdmm_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, mips_cdmm_device_id, type);
+
+ sprintf(alias, "mipscdmm:t%02X*", type);
+ return 1;
+}
+
+/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
+ * All fields are numbers. It would be nicer to use strings for vendor
+ * and feature, but getting those out of the build system here is too
+ * complicated.
+ */
+
+static int do_x86cpu_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, x86_cpu_id, feature);
+ DEF_FIELD(symval, x86_cpu_id, family);
+ DEF_FIELD(symval, x86_cpu_id, model);
+ DEF_FIELD(symval, x86_cpu_id, vendor);
+
+ strcpy(alias, "cpu:type:x86,");
+ ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
+ ADD(alias, "fam", family != X86_FAMILY_ANY, family);
+ ADD(alias, "mod", model != X86_MODEL_ANY, model);
+ strcat(alias, ":feature:*");
+ if (feature != X86_FEATURE_ANY)
+ sprintf(alias + strlen(alias), "%04X*", feature);
+ return 1;
+}
+
+/* LOOKS like cpu:type:*:feature:*FEAT* */
+static int do_cpu_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, cpu_feature, feature);
+
+ sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
+ return 1;
+}
+
+/* Looks like: mei:S:uuid:N:* */
+static int do_mei_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
+ DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
+ DEF_FIELD(symval, mei_cl_device_id, version);
+
+ sprintf(alias, MEI_CL_MODULE_PREFIX);
+ sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
+ add_uuid(alias, *uuid);
+ ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
+
+ strcat(alias, ":*");
+
+ return 1;
+}
+
+/* Looks like: rapidio:vNdNavNadN */
+static int do_rio_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, rio_device_id, did);
+ DEF_FIELD(symval, rio_device_id, vid);
+ DEF_FIELD(symval, rio_device_id, asm_did);
+ DEF_FIELD(symval, rio_device_id, asm_vid);
+
+ strcpy(alias, "rapidio:");
+ ADD(alias, "v", vid != RIO_ANY_ID, vid);
+ ADD(alias, "d", did != RIO_ANY_ID, did);
+ ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
+ ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: ulpi:vNpN */
+static int do_ulpi_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, ulpi_device_id, vendor);
+ DEF_FIELD(symval, ulpi_device_id, product);
+
+ sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
+
+ return 1;
+}
+
+/* Looks like: hdaudio:vNrNaN */
+static int do_hda_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, hda_device_id, vendor_id);
+ DEF_FIELD(symval, hda_device_id, rev_id);
+ DEF_FIELD(symval, hda_device_id, api_version);
+
+ strcpy(alias, "hdaudio:");
+ ADD(alias, "v", vendor_id != 0, vendor_id);
+ ADD(alias, "r", rev_id != 0, rev_id);
+ ADD(alias, "a", api_version != 0, api_version);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: sdw:mNpNvNcN */
+static int do_sdw_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, sdw_device_id, mfg_id);
+ DEF_FIELD(symval, sdw_device_id, part_id);
+ DEF_FIELD(symval, sdw_device_id, sdw_version);
+ DEF_FIELD(symval, sdw_device_id, class_id);
+
+ strcpy(alias, "sdw:");
+ ADD(alias, "m", mfg_id != 0, mfg_id);
+ ADD(alias, "p", part_id != 0, part_id);
+ ADD(alias, "v", sdw_version != 0, sdw_version);
+ ADD(alias, "c", class_id != 0, class_id);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: fsl-mc:vNdN */
+static int do_fsl_mc_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, fsl_mc_device_id, vendor);
+ DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
+
+ sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
+ return 1;
+}
+
+/* Looks like: tbsvc:kSpNvNrN */
+static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, tb_service_id, match_flags);
+ DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
+ DEF_FIELD(symval, tb_service_id, protocol_id);
+ DEF_FIELD(symval, tb_service_id, protocol_version);
+ DEF_FIELD(symval, tb_service_id, protocol_revision);
+
+ strcpy(alias, "tbsvc:");
+ if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
+ sprintf(alias + strlen(alias), "k%s", *protocol_key);
+ else
+ strcat(alias + strlen(alias), "k*");
+ ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
+ ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
+ protocol_version);
+ ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
+ protocol_revision);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: typec:idNmN */
+static int do_typec_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, typec_device_id, svid);
+ DEF_FIELD(symval, typec_device_id, mode);
+
+ sprintf(alias, "typec:id%04X", svid);
+ ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
+
+ return 1;
+}
+
+/* Looks like: tee:uuid */
+static int do_tee_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, tee_client_device_id, uuid);
+
+ sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4],
+ uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9],
+ uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14],
+ uuid->b[15]);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: wmi:guid */
+static int do_wmi_entry(const char *filename, void *symval, char *alias)
+{
+ int len;
+ DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
+
+ if (strlen(*guid_string) != UUID_STRING_LEN) {
+ warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
+ *guid_string, filename);
+ return 0;
+ }
+
+ len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
+ if (len < 0 || len >= ALIAS_SIZE) {
+ warn("Could not generate all MODULE_ALIAS's in '%s'\n",
+ filename);
+ return 0;
+ }
+ return 1;
+}
+
+/* Looks like: mhi:S */
+static int do_mhi_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, mhi_device_id, chan);
+ sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
+ return 1;
+}
+
+/* Looks like: mhi_ep:S */
+static int do_mhi_ep_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, mhi_device_id, chan);
+ sprintf(alias, MHI_EP_DEVICE_MODALIAS_FMT, *chan);
+
+ return 1;
+}
+
+/* Looks like: ishtp:{guid} */
+static int do_ishtp_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, ishtp_device_id, guid);
+
+ strcpy(alias, ISHTP_MODULE_PREFIX "{");
+ add_guid(alias, *guid);
+ strcat(alias, "}");
+
+ return 1;
+}
+
+static int do_auxiliary_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
+ sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name);
+
+ return 1;
+}
+
+/*
+ * Looks like: ssam:dNcNtNiNfN
+ *
+ * N is exactly 2 digits, where each is an upper-case hex digit.
+ */
+static int do_ssam_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, ssam_device_id, match_flags);
+ DEF_FIELD(symval, ssam_device_id, domain);
+ DEF_FIELD(symval, ssam_device_id, category);
+ DEF_FIELD(symval, ssam_device_id, target);
+ DEF_FIELD(symval, ssam_device_id, instance);
+ DEF_FIELD(symval, ssam_device_id, function);
+
+ sprintf(alias, "ssam:d%02Xc%02X", domain, category);
+ ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
+ ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
+ ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
+
+ return 1;
+}
+
+/* Looks like: dfl:tNfN */
+static int do_dfl_entry(const char *filename, void *symval, char *alias)
+{
+ DEF_FIELD(symval, dfl_device_id, type);
+ DEF_FIELD(symval, dfl_device_id, feature_id);
+
+ sprintf(alias, "dfl:t%04Xf%04X", type, feature_id);
+
+ add_wildcard(alias);
+ return 1;
+}
+
+/* Looks like: cdx:vNdN */
+static int do_cdx_entry(const char *filename, void *symval,
+ char *alias)
+{
+ DEF_FIELD(symval, cdx_device_id, vendor);
+ DEF_FIELD(symval, cdx_device_id, device);
+ DEF_FIELD(symval, cdx_device_id, override_only);
+
+ switch (override_only) {
+ case 0:
+ strcpy(alias, "cdx:");
+ break;
+ case CDX_ID_F_VFIO_DRIVER_OVERRIDE:
+ strcpy(alias, "vfio_cdx:");
+ break;
+ default:
+ warn("Unknown CDX driver_override alias %08X\n",
+ override_only);
+ return 0;
+ }
+
+ ADD(alias, "v", vendor != CDX_ANY_ID, vendor);
+ ADD(alias, "d", device != CDX_ANY_ID, device);
+ return 1;
+}
+
+/* Does namelen bytes of name exactly match the symbol? */
+static bool sym_is(const char *name, unsigned namelen, const char *symbol)
+{
+ if (namelen != strlen(symbol))
+ return false;
+
+ return memcmp(name, symbol, namelen) == 0;
+}
+
+static void do_table(void *symval, unsigned long size,
+ unsigned long id_size,
+ const char *device_id,
+ int (*do_entry)(const char *filename, void *symval, char *alias),
+ struct module *mod)
+{
+ unsigned int i;
+ char alias[ALIAS_SIZE];
+
+ device_id_check(mod->name, device_id, size, id_size, symval);
+ /* Leave last one: it's the terminator. */
+ size -= id_size;
+
+ for (i = 0; i < size; i += id_size) {
+ if (do_entry(mod->name, symval+i, alias)) {
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"%s\");\n", alias);
+ }
+ }
+}
+
+static const struct devtable devtable[] = {
+ {"hid", SIZE_hid_device_id, do_hid_entry},
+ {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
+ {"pci", SIZE_pci_device_id, do_pci_entry},
+ {"ccw", SIZE_ccw_device_id, do_ccw_entry},
+ {"ap", SIZE_ap_device_id, do_ap_entry},
+ {"css", SIZE_css_device_id, do_css_entry},
+ {"serio", SIZE_serio_device_id, do_serio_entry},
+ {"acpi", SIZE_acpi_device_id, do_acpi_entry},
+ {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
+ {"vio", SIZE_vio_device_id, do_vio_entry},
+ {"input", SIZE_input_device_id, do_input_entry},
+ {"eisa", SIZE_eisa_device_id, do_eisa_entry},
+ {"parisc", SIZE_parisc_device_id, do_parisc_entry},
+ {"sdio", SIZE_sdio_device_id, do_sdio_entry},
+ {"ssb", SIZE_ssb_device_id, do_ssb_entry},
+ {"bcma", SIZE_bcma_device_id, do_bcma_entry},
+ {"virtio", SIZE_virtio_device_id, do_virtio_entry},
+ {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
+ {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
+ {"i2c", SIZE_i2c_device_id, do_i2c_entry},
+ {"i3c", SIZE_i3c_device_id, do_i3c_entry},
+ {"spi", SIZE_spi_device_id, do_spi_entry},
+ {"dmi", SIZE_dmi_system_id, do_dmi_entry},
+ {"platform", SIZE_platform_device_id, do_platform_entry},
+ {"mdio", SIZE_mdio_device_id, do_mdio_entry},
+ {"zorro", SIZE_zorro_device_id, do_zorro_entry},
+ {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
+ {"ipack", SIZE_ipack_device_id, do_ipack_entry},
+ {"amba", SIZE_amba_id, do_amba_entry},
+ {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
+ {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
+ {"cpu", SIZE_cpu_feature, do_cpu_entry},
+ {"mei", SIZE_mei_cl_device_id, do_mei_entry},
+ {"rapidio", SIZE_rio_device_id, do_rio_entry},
+ {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
+ {"hdaudio", SIZE_hda_device_id, do_hda_entry},
+ {"sdw", SIZE_sdw_device_id, do_sdw_entry},
+ {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
+ {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
+ {"typec", SIZE_typec_device_id, do_typec_entry},
+ {"tee", SIZE_tee_client_device_id, do_tee_entry},
+ {"wmi", SIZE_wmi_device_id, do_wmi_entry},
+ {"mhi", SIZE_mhi_device_id, do_mhi_entry},
+ {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry},
+ {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
+ {"ssam", SIZE_ssam_device_id, do_ssam_entry},
+ {"dfl", SIZE_dfl_device_id, do_dfl_entry},
+ {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry},
+ {"cdx", SIZE_cdx_device_id, do_cdx_entry},
+};
+
+/* Create MODULE_ALIAS() statements.
+ * At this time, we cannot write the actual output C source yet,
+ * so we write into the mod->dev_table_buf buffer. */
+void handle_moddevtable(struct module *mod, struct elf_info *info,
+ Elf_Sym *sym, const char *symname)
+{
+ void *symval;
+ char *zeros = NULL;
+ const char *name, *identifier;
+ unsigned int namelen;
+
+ /* We're looking for a section relative symbol */
+ if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
+ return;
+
+ /* We're looking for an object */
+ if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
+ return;
+
+ /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
+ if (strncmp(symname, "__mod_", strlen("__mod_")))
+ return;
+ name = symname + strlen("__mod_");
+ namelen = strlen(name);
+ if (namelen < strlen("_device_table"))
+ return;
+ if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
+ return;
+ identifier = strstr(name, "__");
+ if (!identifier)
+ return;
+ namelen = identifier - name;
+
+ /* Handle all-NULL symbols allocated into .bss */
+ if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
+ zeros = calloc(1, sym->st_size);
+ symval = zeros;
+ } else {
+ symval = sym_get_data(info, sym);
+ }
+
+ /* First handle the "special" cases */
+ if (sym_is(name, namelen, "usb"))
+ do_usb_table(symval, sym->st_size, mod);
+ else if (sym_is(name, namelen, "of"))
+ do_of_table(symval, sym->st_size, mod);
+ else if (sym_is(name, namelen, "pnp"))
+ do_pnp_device_entry(symval, sym->st_size, mod);
+ else if (sym_is(name, namelen, "pnp_card"))
+ do_pnp_card_entries(symval, sym->st_size, mod);
+ else {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devtable); i++) {
+ const struct devtable *p = &devtable[i];
+
+ if (sym_is(name, namelen, p->device_id)) {
+ do_table(symval, sym->st_size, p->id_size,
+ p->device_id, p->do_entry, mod);
+ break;
+ }
+ }
+ }
+ free(zeros);
+}
+
+/* Now add out buffered information to the generated C source */
+void add_moddevtable(struct buffer *buf, struct module *mod)
+{
+ buf_printf(buf, "\n");
+ buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
+ free(mod->dev_table_buf.p);
+}
diff --git a/scripts/mod/list.h b/scripts/mod/list.h
new file mode 100644
index 0000000000..a924a6c4aa
--- /dev/null
+++ b/scripts/mod/list.h
@@ -0,0 +1,213 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LIST_H
+#define LIST_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/* Are two types/vars the same type (ignoring qualifiers)? */
+#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr: the pointer to the member.
+ * @type: the type of the container struct this is embedded in.
+ * @member: the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({ \
+ void *__mptr = (void *)(ptr); \
+ _Static_assert(__same_type(*(ptr), ((type *)0)->member) || \
+ __same_type(*(ptr), void), \
+ "pointer type mismatch in container_of()"); \
+ ((type *)(__mptr - offsetof(type, member))); })
+
+#define LIST_POISON1 ((void *) 0x100)
+#define LIST_POISON2 ((void *) 0x122)
+
+/*
+ * Circular doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+ struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+ struct list_head name = LIST_HEAD_INIT(name)
+
+/**
+ * INIT_LIST_HEAD - Initialize a list_head structure
+ * @list: list_head structure to be initialized.
+ *
+ * Initializes the list_head to point to itself. If it is a list header,
+ * the result is an empty list.
+ */
+static inline void INIT_LIST_HEAD(struct list_head *list)
+{
+ list->next = list;
+ list->prev = list;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *new,
+ struct list_head *prev,
+ struct list_head *next)
+{
+ next->prev = new;
+ new->next = next;
+ new->prev = prev;
+ prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+ __list_add(new, head, head->next);
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+ __list_add(new, head->prev, head);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head *prev, struct list_head *next)
+{
+ next->prev = prev;
+ prev->next = next;
+}
+
+static inline void __list_del_entry(struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+ __list_del_entry(entry);
+ entry->next = LIST_POISON1;
+ entry->prev = LIST_POISON2;
+}
+
+/**
+ * list_is_head - tests whether @list is the list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_head(const struct list_head *list, const struct list_head *head)
+{
+ return list == head;
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static inline int list_empty(const struct list_head *head)
+{
+ return head->next == head;
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr: the &struct list_head pointer.
+ * @type: the type of the struct this is embedded in.
+ * @member: the name of the list_head within the struct.
+ */
+#define list_entry(ptr, type, member) \
+ container_of(ptr, type, member)
+
+/**
+ * list_first_entry - get the first element from a list
+ * @ptr: the list head to take the element from.
+ * @type: the type of the struct this is embedded in.
+ * @member: the name of the list_head within the struct.
+ *
+ * Note, that list is expected to be not empty.
+ */
+#define list_first_entry(ptr, type, member) \
+ list_entry((ptr)->next, type, member)
+
+/**
+ * list_next_entry - get the next element in list
+ * @pos: the type * to cursor
+ * @member: the name of the list_head within the struct.
+ */
+#define list_next_entry(pos, member) \
+ list_entry((pos)->member.next, typeof(*(pos)), member)
+
+/**
+ * list_entry_is_head - test if the entry points to the head of the list
+ * @pos: the type * to cursor
+ * @head: the head for your list.
+ * @member: the name of the list_head within the struct.
+ */
+#define list_entry_is_head(pos, head, member) \
+ (&pos->member == (head))
+
+/**
+ * list_for_each_entry - iterate over list of given type
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_head within the struct.
+ */
+#define list_for_each_entry(pos, head, member) \
+ for (pos = list_first_entry(head, typeof(*pos), member); \
+ !list_entry_is_head(pos, head, member); \
+ pos = list_next_entry(pos, member))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type. Safe against removal of list entry
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the list_head within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member) \
+ for (pos = list_first_entry(head, typeof(*pos), member), \
+ n = list_next_entry(pos, member); \
+ !list_entry_is_head(pos, head, member); \
+ pos = n, n = list_next_entry(n, member))
+
+#endif /* LIST_H */
diff --git a/scripts/mod/mk_elfconfig.c b/scripts/mod/mk_elfconfig.c
new file mode 100644
index 0000000000..680eade89b
--- /dev/null
+++ b/scripts/mod/mk_elfconfig.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <elf.h>
+
+int
+main(int argc, char **argv)
+{
+ unsigned char ei[EI_NIDENT];
+ union { short s; char c[2]; } endian_test;
+
+ if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
+ fprintf(stderr, "Error: input truncated\n");
+ return 1;
+ }
+ if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
+ fprintf(stderr, "Error: not ELF\n");
+ return 1;
+ }
+ switch (ei[EI_CLASS]) {
+ case ELFCLASS32:
+ printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
+ break;
+ case ELFCLASS64:
+ printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
+ break;
+ default:
+ exit(1);
+ }
+ switch (ei[EI_DATA]) {
+ case ELFDATA2LSB:
+ printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
+ break;
+ case ELFDATA2MSB:
+ printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
+ break;
+ default:
+ exit(1);
+ }
+
+ if (sizeof(unsigned long) == 4) {
+ printf("#define HOST_ELFCLASS ELFCLASS32\n");
+ } else if (sizeof(unsigned long) == 8) {
+ printf("#define HOST_ELFCLASS ELFCLASS64\n");
+ }
+
+ endian_test.s = 0x0102;
+ if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
+ printf("#define HOST_ELFDATA ELFDATA2MSB\n");
+ else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
+ printf("#define HOST_ELFDATA ELFDATA2LSB\n");
+ else
+ exit(1);
+
+ return 0;
+}
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
new file mode 100644
index 0000000000..ac4ef3e206
--- /dev/null
+++ b/scripts/mod/modpost.c
@@ -0,0 +1,2390 @@
+/* Postprocess module symbol versions
+ *
+ * Copyright 2003 Kai Germaschewski
+ * Copyright 2002-2004 Rusty Russell, IBM Corporation
+ * Copyright 2006-2008 Sam Ravnborg
+ * Based in part on module-init-tools/depmod.c,file2alias
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Usage: modpost vmlinux module1.o module2.o ...
+ */
+
+#define _GNU_SOURCE
+#include <elf.h>
+#include <fnmatch.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <errno.h>
+#include "modpost.h"
+#include "../../include/linux/license.h"
+#include "../../include/linux/module_symbol.h"
+
+static bool module_enabled;
+/* Are we using CONFIG_MODVERSIONS? */
+static bool modversions;
+/* Is CONFIG_MODULE_SRCVERSION_ALL set? */
+static bool all_versions;
+/* If we are modposting external module set to 1 */
+static bool external_module;
+/* Only warn about unresolved symbols */
+static bool warn_unresolved;
+
+static int sec_mismatch_count;
+static bool sec_mismatch_warn_only = true;
+/* Trim EXPORT_SYMBOLs that are unused by in-tree modules */
+static bool trim_unused_exports;
+
+/* ignore missing files */
+static bool ignore_missing_files;
+/* If set to 1, only warn (instead of error) about missing ns imports */
+static bool allow_missing_ns_imports;
+
+static bool error_occurred;
+
+static bool extra_warn;
+
+/*
+ * Cut off the warnings when there are too many. This typically occurs when
+ * vmlinux is missing. ('make modules' without building vmlinux.)
+ */
+#define MAX_UNRESOLVED_REPORTS 10
+static unsigned int nr_unresolved;
+
+/* In kernel, this size is defined in linux/module.h;
+ * here we use Elf_Addr instead of long for covering cross-compile
+ */
+
+#define MODULE_NAME_LEN (64 - sizeof(Elf_Addr))
+
+void __attribute__((format(printf, 2, 3)))
+modpost_log(enum loglevel loglevel, const char *fmt, ...)
+{
+ va_list arglist;
+
+ switch (loglevel) {
+ case LOG_WARN:
+ fprintf(stderr, "WARNING: ");
+ break;
+ case LOG_ERROR:
+ fprintf(stderr, "ERROR: ");
+ break;
+ case LOG_FATAL:
+ fprintf(stderr, "FATAL: ");
+ break;
+ default: /* invalid loglevel, ignore */
+ break;
+ }
+
+ fprintf(stderr, "modpost: ");
+
+ va_start(arglist, fmt);
+ vfprintf(stderr, fmt, arglist);
+ va_end(arglist);
+
+ if (loglevel == LOG_FATAL)
+ exit(1);
+ if (loglevel == LOG_ERROR)
+ error_occurred = true;
+}
+
+static inline bool strends(const char *str, const char *postfix)
+{
+ if (strlen(str) < strlen(postfix))
+ return false;
+
+ return strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
+}
+
+void *do_nofail(void *ptr, const char *expr)
+{
+ if (!ptr)
+ fatal("Memory allocation failure: %s.\n", expr);
+
+ return ptr;
+}
+
+char *read_text_file(const char *filename)
+{
+ struct stat st;
+ size_t nbytes;
+ int fd;
+ char *buf;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ perror(filename);
+ exit(1);
+ }
+
+ if (fstat(fd, &st) < 0) {
+ perror(filename);
+ exit(1);
+ }
+
+ buf = NOFAIL(malloc(st.st_size + 1));
+
+ nbytes = st.st_size;
+
+ while (nbytes) {
+ ssize_t bytes_read;
+
+ bytes_read = read(fd, buf, nbytes);
+ if (bytes_read < 0) {
+ perror(filename);
+ exit(1);
+ }
+
+ nbytes -= bytes_read;
+ }
+ buf[st.st_size] = '\0';
+
+ close(fd);
+
+ return buf;
+}
+
+char *get_line(char **stringp)
+{
+ char *orig = *stringp, *next;
+
+ /* do not return the unwanted extra line at EOF */
+ if (!orig || *orig == '\0')
+ return NULL;
+
+ /* don't use strsep here, it is not available everywhere */
+ next = strchr(orig, '\n');
+ if (next)
+ *next++ = '\0';
+
+ *stringp = next;
+
+ return orig;
+}
+
+/* A list of all modules we processed */
+LIST_HEAD(modules);
+
+static struct module *find_module(const char *modname)
+{
+ struct module *mod;
+
+ list_for_each_entry(mod, &modules, list) {
+ if (strcmp(mod->name, modname) == 0)
+ return mod;
+ }
+ return NULL;
+}
+
+static struct module *new_module(const char *name, size_t namelen)
+{
+ struct module *mod;
+
+ mod = NOFAIL(malloc(sizeof(*mod) + namelen + 1));
+ memset(mod, 0, sizeof(*mod));
+
+ INIT_LIST_HEAD(&mod->exported_symbols);
+ INIT_LIST_HEAD(&mod->unresolved_symbols);
+ INIT_LIST_HEAD(&mod->missing_namespaces);
+ INIT_LIST_HEAD(&mod->imported_namespaces);
+
+ memcpy(mod->name, name, namelen);
+ mod->name[namelen] = '\0';
+ mod->is_vmlinux = (strcmp(mod->name, "vmlinux") == 0);
+
+ /*
+ * Set mod->is_gpl_compatible to true by default. If MODULE_LICENSE()
+ * is missing, do not check the use for EXPORT_SYMBOL_GPL() becasue
+ * modpost will exit wiht error anyway.
+ */
+ mod->is_gpl_compatible = true;
+
+ list_add_tail(&mod->list, &modules);
+
+ return mod;
+}
+
+/* A hash of all exported symbols,
+ * struct symbol is also used for lists of unresolved symbols */
+
+#define SYMBOL_HASH_SIZE 1024
+
+struct symbol {
+ struct symbol *next;
+ struct list_head list; /* link to module::exported_symbols or module::unresolved_symbols */
+ struct module *module;
+ char *namespace;
+ unsigned int crc;
+ bool crc_valid;
+ bool weak;
+ bool is_func;
+ bool is_gpl_only; /* exported by EXPORT_SYMBOL_GPL */
+ bool used; /* there exists a user of this symbol */
+ char name[];
+};
+
+static struct symbol *symbolhash[SYMBOL_HASH_SIZE];
+
+/* This is based on the hash algorithm from gdbm, via tdb */
+static inline unsigned int tdb_hash(const char *name)
+{
+ unsigned value; /* Used to compute the hash value. */
+ unsigned i; /* Used to cycle through random values. */
+
+ /* Set the initial value from the key size. */
+ for (value = 0x238F13AF * strlen(name), i = 0; name[i]; i++)
+ value = (value + (((unsigned char *)name)[i] << (i*5 % 24)));
+
+ return (1103515243 * value + 12345);
+}
+
+/**
+ * Allocate a new symbols for use in the hash of exported symbols or
+ * the list of unresolved symbols per module
+ **/
+static struct symbol *alloc_symbol(const char *name)
+{
+ struct symbol *s = NOFAIL(malloc(sizeof(*s) + strlen(name) + 1));
+
+ memset(s, 0, sizeof(*s));
+ strcpy(s->name, name);
+
+ return s;
+}
+
+/* For the hash of exported symbols */
+static void hash_add_symbol(struct symbol *sym)
+{
+ unsigned int hash;
+
+ hash = tdb_hash(sym->name) % SYMBOL_HASH_SIZE;
+ sym->next = symbolhash[hash];
+ symbolhash[hash] = sym;
+}
+
+static void sym_add_unresolved(const char *name, struct module *mod, bool weak)
+{
+ struct symbol *sym;
+
+ sym = alloc_symbol(name);
+ sym->weak = weak;
+
+ list_add_tail(&sym->list, &mod->unresolved_symbols);
+}
+
+static struct symbol *sym_find_with_module(const char *name, struct module *mod)
+{
+ struct symbol *s;
+
+ /* For our purposes, .foo matches foo. PPC64 needs this. */
+ if (name[0] == '.')
+ name++;
+
+ for (s = symbolhash[tdb_hash(name) % SYMBOL_HASH_SIZE]; s; s = s->next) {
+ if (strcmp(s->name, name) == 0 && (!mod || s->module == mod))
+ return s;
+ }
+ return NULL;
+}
+
+static struct symbol *find_symbol(const char *name)
+{
+ return sym_find_with_module(name, NULL);
+}
+
+struct namespace_list {
+ struct list_head list;
+ char namespace[];
+};
+
+static bool contains_namespace(struct list_head *head, const char *namespace)
+{
+ struct namespace_list *list;
+
+ /*
+ * The default namespace is null string "", which is always implicitly
+ * contained.
+ */
+ if (!namespace[0])
+ return true;
+
+ list_for_each_entry(list, head, list) {
+ if (!strcmp(list->namespace, namespace))
+ return true;
+ }
+
+ return false;
+}
+
+static void add_namespace(struct list_head *head, const char *namespace)
+{
+ struct namespace_list *ns_entry;
+
+ if (!contains_namespace(head, namespace)) {
+ ns_entry = NOFAIL(malloc(sizeof(*ns_entry) +
+ strlen(namespace) + 1));
+ strcpy(ns_entry->namespace, namespace);
+ list_add_tail(&ns_entry->list, head);
+ }
+}
+
+static void *sym_get_data_by_offset(const struct elf_info *info,
+ unsigned int secindex, unsigned long offset)
+{
+ Elf_Shdr *sechdr = &info->sechdrs[secindex];
+
+ return (void *)info->hdr + sechdr->sh_offset + offset;
+}
+
+void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym)
+{
+ return sym_get_data_by_offset(info, get_secindex(info, sym),
+ sym->st_value);
+}
+
+static const char *sech_name(const struct elf_info *info, Elf_Shdr *sechdr)
+{
+ return sym_get_data_by_offset(info, info->secindex_strings,
+ sechdr->sh_name);
+}
+
+static const char *sec_name(const struct elf_info *info, unsigned int secindex)
+{
+ /*
+ * If sym->st_shndx is a special section index, there is no
+ * corresponding section header.
+ * Return "" if the index is out of range of info->sechdrs[] array.
+ */
+ if (secindex >= info->num_sections)
+ return "";
+
+ return sech_name(info, &info->sechdrs[secindex]);
+}
+
+#define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
+
+static struct symbol *sym_add_exported(const char *name, struct module *mod,
+ bool gpl_only, const char *namespace)
+{
+ struct symbol *s = find_symbol(name);
+
+ if (s && (!external_module || s->module->is_vmlinux || s->module == mod)) {
+ error("%s: '%s' exported twice. Previous export was in %s%s\n",
+ mod->name, name, s->module->name,
+ s->module->is_vmlinux ? "" : ".ko");
+ }
+
+ s = alloc_symbol(name);
+ s->module = mod;
+ s->is_gpl_only = gpl_only;
+ s->namespace = NOFAIL(strdup(namespace));
+ list_add_tail(&s->list, &mod->exported_symbols);
+ hash_add_symbol(s);
+
+ return s;
+}
+
+static void sym_set_crc(struct symbol *sym, unsigned int crc)
+{
+ sym->crc = crc;
+ sym->crc_valid = true;
+}
+
+static void *grab_file(const char *filename, size_t *size)
+{
+ struct stat st;
+ void *map = MAP_FAILED;
+ int fd;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ return NULL;
+ if (fstat(fd, &st))
+ goto failed;
+
+ *size = st.st_size;
+ map = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+
+failed:
+ close(fd);
+ if (map == MAP_FAILED)
+ return NULL;
+ return map;
+}
+
+static void release_file(void *file, size_t size)
+{
+ munmap(file, size);
+}
+
+static int parse_elf(struct elf_info *info, const char *filename)
+{
+ unsigned int i;
+ Elf_Ehdr *hdr;
+ Elf_Shdr *sechdrs;
+ Elf_Sym *sym;
+ const char *secstrings;
+ unsigned int symtab_idx = ~0U, symtab_shndx_idx = ~0U;
+
+ hdr = grab_file(filename, &info->size);
+ if (!hdr) {
+ if (ignore_missing_files) {
+ fprintf(stderr, "%s: %s (ignored)\n", filename,
+ strerror(errno));
+ return 0;
+ }
+ perror(filename);
+ exit(1);
+ }
+ info->hdr = hdr;
+ if (info->size < sizeof(*hdr)) {
+ /* file too small, assume this is an empty .o file */
+ return 0;
+ }
+ /* Is this a valid ELF file? */
+ if ((hdr->e_ident[EI_MAG0] != ELFMAG0) ||
+ (hdr->e_ident[EI_MAG1] != ELFMAG1) ||
+ (hdr->e_ident[EI_MAG2] != ELFMAG2) ||
+ (hdr->e_ident[EI_MAG3] != ELFMAG3)) {
+ /* Not an ELF file - silently ignore it */
+ return 0;
+ }
+ /* Fix endianness in ELF header */
+ hdr->e_type = TO_NATIVE(hdr->e_type);
+ hdr->e_machine = TO_NATIVE(hdr->e_machine);
+ hdr->e_version = TO_NATIVE(hdr->e_version);
+ hdr->e_entry = TO_NATIVE(hdr->e_entry);
+ hdr->e_phoff = TO_NATIVE(hdr->e_phoff);
+ hdr->e_shoff = TO_NATIVE(hdr->e_shoff);
+ hdr->e_flags = TO_NATIVE(hdr->e_flags);
+ hdr->e_ehsize = TO_NATIVE(hdr->e_ehsize);
+ hdr->e_phentsize = TO_NATIVE(hdr->e_phentsize);
+ hdr->e_phnum = TO_NATIVE(hdr->e_phnum);
+ hdr->e_shentsize = TO_NATIVE(hdr->e_shentsize);
+ hdr->e_shnum = TO_NATIVE(hdr->e_shnum);
+ hdr->e_shstrndx = TO_NATIVE(hdr->e_shstrndx);
+ sechdrs = (void *)hdr + hdr->e_shoff;
+ info->sechdrs = sechdrs;
+
+ /* modpost only works for relocatable objects */
+ if (hdr->e_type != ET_REL)
+ fatal("%s: not relocatable object.", filename);
+
+ /* Check if file offset is correct */
+ if (hdr->e_shoff > info->size) {
+ fatal("section header offset=%lu in file '%s' is bigger than filesize=%zu\n",
+ (unsigned long)hdr->e_shoff, filename, info->size);
+ return 0;
+ }
+
+ if (hdr->e_shnum == SHN_UNDEF) {
+ /*
+ * There are more than 64k sections,
+ * read count from .sh_size.
+ */
+ info->num_sections = TO_NATIVE(sechdrs[0].sh_size);
+ }
+ else {
+ info->num_sections = hdr->e_shnum;
+ }
+ if (hdr->e_shstrndx == SHN_XINDEX) {
+ info->secindex_strings = TO_NATIVE(sechdrs[0].sh_link);
+ }
+ else {
+ info->secindex_strings = hdr->e_shstrndx;
+ }
+
+ /* Fix endianness in section headers */
+ for (i = 0; i < info->num_sections; i++) {
+ sechdrs[i].sh_name = TO_NATIVE(sechdrs[i].sh_name);
+ sechdrs[i].sh_type = TO_NATIVE(sechdrs[i].sh_type);
+ sechdrs[i].sh_flags = TO_NATIVE(sechdrs[i].sh_flags);
+ sechdrs[i].sh_addr = TO_NATIVE(sechdrs[i].sh_addr);
+ sechdrs[i].sh_offset = TO_NATIVE(sechdrs[i].sh_offset);
+ sechdrs[i].sh_size = TO_NATIVE(sechdrs[i].sh_size);
+ sechdrs[i].sh_link = TO_NATIVE(sechdrs[i].sh_link);
+ sechdrs[i].sh_info = TO_NATIVE(sechdrs[i].sh_info);
+ sechdrs[i].sh_addralign = TO_NATIVE(sechdrs[i].sh_addralign);
+ sechdrs[i].sh_entsize = TO_NATIVE(sechdrs[i].sh_entsize);
+ }
+ /* Find symbol table. */
+ secstrings = (void *)hdr + sechdrs[info->secindex_strings].sh_offset;
+ for (i = 1; i < info->num_sections; i++) {
+ const char *secname;
+ int nobits = sechdrs[i].sh_type == SHT_NOBITS;
+
+ if (!nobits && sechdrs[i].sh_offset > info->size) {
+ fatal("%s is truncated. sechdrs[i].sh_offset=%lu > sizeof(*hrd)=%zu\n",
+ filename, (unsigned long)sechdrs[i].sh_offset,
+ sizeof(*hdr));
+ return 0;
+ }
+ secname = secstrings + sechdrs[i].sh_name;
+ if (strcmp(secname, ".modinfo") == 0) {
+ if (nobits)
+ fatal("%s has NOBITS .modinfo\n", filename);
+ info->modinfo = (void *)hdr + sechdrs[i].sh_offset;
+ info->modinfo_len = sechdrs[i].sh_size;
+ } else if (!strcmp(secname, ".export_symbol")) {
+ info->export_symbol_secndx = i;
+ }
+
+ if (sechdrs[i].sh_type == SHT_SYMTAB) {
+ unsigned int sh_link_idx;
+ symtab_idx = i;
+ info->symtab_start = (void *)hdr +
+ sechdrs[i].sh_offset;
+ info->symtab_stop = (void *)hdr +
+ sechdrs[i].sh_offset + sechdrs[i].sh_size;
+ sh_link_idx = sechdrs[i].sh_link;
+ info->strtab = (void *)hdr +
+ sechdrs[sh_link_idx].sh_offset;
+ }
+
+ /* 32bit section no. table? ("more than 64k sections") */
+ if (sechdrs[i].sh_type == SHT_SYMTAB_SHNDX) {
+ symtab_shndx_idx = i;
+ info->symtab_shndx_start = (void *)hdr +
+ sechdrs[i].sh_offset;
+ info->symtab_shndx_stop = (void *)hdr +
+ sechdrs[i].sh_offset + sechdrs[i].sh_size;
+ }
+ }
+ if (!info->symtab_start)
+ fatal("%s has no symtab?\n", filename);
+
+ /* Fix endianness in symbols */
+ for (sym = info->symtab_start; sym < info->symtab_stop; sym++) {
+ sym->st_shndx = TO_NATIVE(sym->st_shndx);
+ sym->st_name = TO_NATIVE(sym->st_name);
+ sym->st_value = TO_NATIVE(sym->st_value);
+ sym->st_size = TO_NATIVE(sym->st_size);
+ }
+
+ if (symtab_shndx_idx != ~0U) {
+ Elf32_Word *p;
+ if (symtab_idx != sechdrs[symtab_shndx_idx].sh_link)
+ fatal("%s: SYMTAB_SHNDX has bad sh_link: %u!=%u\n",
+ filename, sechdrs[symtab_shndx_idx].sh_link,
+ symtab_idx);
+ /* Fix endianness */
+ for (p = info->symtab_shndx_start; p < info->symtab_shndx_stop;
+ p++)
+ *p = TO_NATIVE(*p);
+ }
+
+ return 1;
+}
+
+static void parse_elf_finish(struct elf_info *info)
+{
+ release_file(info->hdr, info->size);
+}
+
+static int ignore_undef_symbol(struct elf_info *info, const char *symname)
+{
+ /* ignore __this_module, it will be resolved shortly */
+ if (strcmp(symname, "__this_module") == 0)
+ return 1;
+ /* ignore global offset table */
+ if (strcmp(symname, "_GLOBAL_OFFSET_TABLE_") == 0)
+ return 1;
+ if (info->hdr->e_machine == EM_PPC)
+ /* Special register function linked on all modules during final link of .ko */
+ if (strstarts(symname, "_restgpr_") ||
+ strstarts(symname, "_savegpr_") ||
+ strstarts(symname, "_rest32gpr_") ||
+ strstarts(symname, "_save32gpr_") ||
+ strstarts(symname, "_restvr_") ||
+ strstarts(symname, "_savevr_"))
+ return 1;
+ if (info->hdr->e_machine == EM_PPC64)
+ /* Special register function linked on all modules during final link of .ko */
+ if (strstarts(symname, "_restgpr0_") ||
+ strstarts(symname, "_savegpr0_") ||
+ strstarts(symname, "_restvr_") ||
+ strstarts(symname, "_savevr_") ||
+ strcmp(symname, ".TOC.") == 0)
+ return 1;
+
+ if (info->hdr->e_machine == EM_S390)
+ /* Expoline thunks are linked on all kernel modules during final link of .ko */
+ if (strstarts(symname, "__s390_indirect_jump_r"))
+ return 1;
+ /* Do not ignore this symbol */
+ return 0;
+}
+
+static void handle_symbol(struct module *mod, struct elf_info *info,
+ const Elf_Sym *sym, const char *symname)
+{
+ switch (sym->st_shndx) {
+ case SHN_COMMON:
+ if (strstarts(symname, "__gnu_lto_")) {
+ /* Should warn here, but modpost runs before the linker */
+ } else
+ warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
+ break;
+ case SHN_UNDEF:
+ /* undefined symbol */
+ if (ELF_ST_BIND(sym->st_info) != STB_GLOBAL &&
+ ELF_ST_BIND(sym->st_info) != STB_WEAK)
+ break;
+ if (ignore_undef_symbol(info, symname))
+ break;
+ if (info->hdr->e_machine == EM_SPARC ||
+ info->hdr->e_machine == EM_SPARCV9) {
+ /* Ignore register directives. */
+ if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
+ break;
+ if (symname[0] == '.') {
+ char *munged = NOFAIL(strdup(symname));
+ munged[0] = '_';
+ munged[1] = toupper(munged[1]);
+ symname = munged;
+ }
+ }
+
+ sym_add_unresolved(symname, mod,
+ ELF_ST_BIND(sym->st_info) == STB_WEAK);
+ break;
+ default:
+ if (strcmp(symname, "init_module") == 0)
+ mod->has_init = true;
+ if (strcmp(symname, "cleanup_module") == 0)
+ mod->has_cleanup = true;
+ break;
+ }
+}
+
+/**
+ * Parse tag=value strings from .modinfo section
+ **/
+static char *next_string(char *string, unsigned long *secsize)
+{
+ /* Skip non-zero chars */
+ while (string[0]) {
+ string++;
+ if ((*secsize)-- <= 1)
+ return NULL;
+ }
+
+ /* Skip any zero padding. */
+ while (!string[0]) {
+ string++;
+ if ((*secsize)-- <= 1)
+ return NULL;
+ }
+ return string;
+}
+
+static char *get_next_modinfo(struct elf_info *info, const char *tag,
+ char *prev)
+{
+ char *p;
+ unsigned int taglen = strlen(tag);
+ char *modinfo = info->modinfo;
+ unsigned long size = info->modinfo_len;
+
+ if (prev) {
+ size -= prev - modinfo;
+ modinfo = next_string(prev, &size);
+ }
+
+ for (p = modinfo; p; p = next_string(p, &size)) {
+ if (strncmp(p, tag, taglen) == 0 && p[taglen] == '=')
+ return p + taglen + 1;
+ }
+ return NULL;
+}
+
+static char *get_modinfo(struct elf_info *info, const char *tag)
+
+{
+ return get_next_modinfo(info, tag, NULL);
+}
+
+static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)
+{
+ if (sym)
+ return elf->strtab + sym->st_name;
+ else
+ return "(unknown)";
+}
+
+/*
+ * Check whether the 'string' argument matches one of the 'patterns',
+ * an array of shell wildcard patterns (glob).
+ *
+ * Return true is there is a match.
+ */
+static bool match(const char *string, const char *const patterns[])
+{
+ const char *pattern;
+
+ while ((pattern = *patterns++)) {
+ if (!fnmatch(pattern, string, 0))
+ return true;
+ }
+
+ return false;
+}
+
+/* useful to pass patterns to match() directly */
+#define PATTERNS(...) \
+ ({ \
+ static const char *const patterns[] = {__VA_ARGS__, NULL}; \
+ patterns; \
+ })
+
+/* sections that we do not want to do full section mismatch check on */
+static const char *const section_white_list[] =
+{
+ ".comment*",
+ ".debug*",
+ ".zdebug*", /* Compressed debug sections. */
+ ".GCC.command.line", /* record-gcc-switches */
+ ".mdebug*", /* alpha, score, mips etc. */
+ ".pdr", /* alpha, score, mips etc. */
+ ".stab*",
+ ".note*",
+ ".got*",
+ ".toc*",
+ ".xt.prop", /* xtensa */
+ ".xt.lit", /* xtensa */
+ ".arcextmap*", /* arc */
+ ".gnu.linkonce.arcext*", /* arc : modules */
+ ".cmem*", /* EZchip */
+ ".fmt_slot*", /* EZchip */
+ ".gnu.lto*",
+ ".discard.*",
+ ".llvm.call-graph-profile", /* call graph */
+ NULL
+};
+
+/*
+ * This is used to find sections missing the SHF_ALLOC flag.
+ * The cause of this is often a section specified in assembler
+ * without "ax" / "aw".
+ */
+static void check_section(const char *modname, struct elf_info *elf,
+ Elf_Shdr *sechdr)
+{
+ const char *sec = sech_name(elf, sechdr);
+
+ if (sechdr->sh_type == SHT_PROGBITS &&
+ !(sechdr->sh_flags & SHF_ALLOC) &&
+ !match(sec, section_white_list)) {
+ warn("%s (%s): unexpected non-allocatable section.\n"
+ "Did you forget to use \"ax\"/\"aw\" in a .S file?\n"
+ "Note that for example <linux/init.h> contains\n"
+ "section definitions for use in .S files.\n\n",
+ modname, sec);
+ }
+}
+
+
+
+#define ALL_INIT_DATA_SECTIONS \
+ ".init.setup", ".init.rodata", ".meminit.rodata", \
+ ".init.data", ".meminit.data"
+#define ALL_EXIT_DATA_SECTIONS \
+ ".exit.data", ".memexit.data"
+
+#define ALL_INIT_TEXT_SECTIONS \
+ ".init.text", ".meminit.text"
+#define ALL_EXIT_TEXT_SECTIONS \
+ ".exit.text", ".memexit.text"
+
+#define ALL_PCI_INIT_SECTIONS \
+ ".pci_fixup_early", ".pci_fixup_header", ".pci_fixup_final", \
+ ".pci_fixup_enable", ".pci_fixup_resume", \
+ ".pci_fixup_resume_early", ".pci_fixup_suspend"
+
+#define ALL_XXXINIT_SECTIONS MEM_INIT_SECTIONS
+#define ALL_XXXEXIT_SECTIONS MEM_EXIT_SECTIONS
+
+#define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS
+#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS
+
+#define DATA_SECTIONS ".data", ".data.rel"
+#define TEXT_SECTIONS ".text", ".text.*", ".sched.text", \
+ ".kprobes.text", ".cpuidle.text", ".noinstr.text"
+#define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
+ ".fixup", ".entry.text", ".exception.text", \
+ ".coldtext", ".softirqentry.text"
+
+#define INIT_SECTIONS ".init.*"
+#define MEM_INIT_SECTIONS ".meminit.*"
+
+#define EXIT_SECTIONS ".exit.*"
+#define MEM_EXIT_SECTIONS ".memexit.*"
+
+#define ALL_TEXT_SECTIONS ALL_INIT_TEXT_SECTIONS, ALL_EXIT_TEXT_SECTIONS, \
+ TEXT_SECTIONS, OTHER_TEXT_SECTIONS
+
+enum mismatch {
+ TEXT_TO_ANY_INIT,
+ DATA_TO_ANY_INIT,
+ TEXTDATA_TO_ANY_EXIT,
+ XXXINIT_TO_SOME_INIT,
+ XXXEXIT_TO_SOME_EXIT,
+ ANY_INIT_TO_ANY_EXIT,
+ ANY_EXIT_TO_ANY_INIT,
+ EXTABLE_TO_NON_TEXT,
+};
+
+/**
+ * Describe how to match sections on different criteria:
+ *
+ * @fromsec: Array of sections to be matched.
+ *
+ * @bad_tosec: Relocations applied to a section in @fromsec to a section in
+ * this array is forbidden (black-list). Can be empty.
+ *
+ * @good_tosec: Relocations applied to a section in @fromsec must be
+ * targeting sections in this array (white-list). Can be empty.
+ *
+ * @mismatch: Type of mismatch.
+ */
+struct sectioncheck {
+ const char *fromsec[20];
+ const char *bad_tosec[20];
+ const char *good_tosec[20];
+ enum mismatch mismatch;
+};
+
+static const struct sectioncheck sectioncheck[] = {
+/* Do not reference init/exit code/data from
+ * normal code and data
+ */
+{
+ .fromsec = { TEXT_SECTIONS, NULL },
+ .bad_tosec = { ALL_INIT_SECTIONS, NULL },
+ .mismatch = TEXT_TO_ANY_INIT,
+},
+{
+ .fromsec = { DATA_SECTIONS, NULL },
+ .bad_tosec = { ALL_XXXINIT_SECTIONS, INIT_SECTIONS, NULL },
+ .mismatch = DATA_TO_ANY_INIT,
+},
+{
+ .fromsec = { TEXT_SECTIONS, DATA_SECTIONS, NULL },
+ .bad_tosec = { ALL_EXIT_SECTIONS, NULL },
+ .mismatch = TEXTDATA_TO_ANY_EXIT,
+},
+/* Do not reference init code/data from meminit code/data */
+{
+ .fromsec = { ALL_XXXINIT_SECTIONS, NULL },
+ .bad_tosec = { INIT_SECTIONS, NULL },
+ .mismatch = XXXINIT_TO_SOME_INIT,
+},
+/* Do not reference exit code/data from memexit code/data */
+{
+ .fromsec = { ALL_XXXEXIT_SECTIONS, NULL },
+ .bad_tosec = { EXIT_SECTIONS, NULL },
+ .mismatch = XXXEXIT_TO_SOME_EXIT,
+},
+/* Do not use exit code/data from init code */
+{
+ .fromsec = { ALL_INIT_SECTIONS, NULL },
+ .bad_tosec = { ALL_EXIT_SECTIONS, NULL },
+ .mismatch = ANY_INIT_TO_ANY_EXIT,
+},
+/* Do not use init code/data from exit code */
+{
+ .fromsec = { ALL_EXIT_SECTIONS, NULL },
+ .bad_tosec = { ALL_INIT_SECTIONS, NULL },
+ .mismatch = ANY_EXIT_TO_ANY_INIT,
+},
+{
+ .fromsec = { ALL_PCI_INIT_SECTIONS, NULL },
+ .bad_tosec = { INIT_SECTIONS, NULL },
+ .mismatch = ANY_INIT_TO_ANY_EXIT,
+},
+{
+ .fromsec = { "__ex_table", NULL },
+ /* If you're adding any new black-listed sections in here, consider
+ * adding a special 'printer' for them in scripts/check_extable.
+ */
+ .bad_tosec = { ".altinstr_replacement", NULL },
+ .good_tosec = {ALL_TEXT_SECTIONS , NULL},
+ .mismatch = EXTABLE_TO_NON_TEXT,
+}
+};
+
+static const struct sectioncheck *section_mismatch(
+ const char *fromsec, const char *tosec)
+{
+ int i;
+
+ /*
+ * The target section could be the SHT_NUL section when we're
+ * handling relocations to un-resolved symbols, trying to match it
+ * doesn't make much sense and causes build failures on parisc
+ * architectures.
+ */
+ if (*tosec == '\0')
+ return NULL;
+
+ for (i = 0; i < ARRAY_SIZE(sectioncheck); i++) {
+ const struct sectioncheck *check = &sectioncheck[i];
+
+ if (match(fromsec, check->fromsec)) {
+ if (check->bad_tosec[0] && match(tosec, check->bad_tosec))
+ return check;
+ if (check->good_tosec[0] && !match(tosec, check->good_tosec))
+ return check;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * Whitelist to allow certain references to pass with no warning.
+ *
+ * Pattern 1:
+ * If a module parameter is declared __initdata and permissions=0
+ * then this is legal despite the warning generated.
+ * We cannot see value of permissions here, so just ignore
+ * this pattern.
+ * The pattern is identified by:
+ * tosec = .init.data
+ * fromsec = .data*
+ * atsym =__param*
+ *
+ * Pattern 1a:
+ * module_param_call() ops can refer to __init set function if permissions=0
+ * The pattern is identified by:
+ * tosec = .init.text
+ * fromsec = .data*
+ * atsym = __param_ops_*
+ *
+ * Pattern 3:
+ * Whitelist all references from .head.text to any init section
+ *
+ * Pattern 4:
+ * Some symbols belong to init section but still it is ok to reference
+ * these from non-init sections as these symbols don't have any memory
+ * allocated for them and symbol address and value are same. So even
+ * if init section is freed, its ok to reference those symbols.
+ * For ex. symbols marking the init section boundaries.
+ * This pattern is identified by
+ * refsymname = __init_begin, _sinittext, _einittext
+ *
+ * Pattern 5:
+ * GCC may optimize static inlines when fed constant arg(s) resulting
+ * in functions like cpumask_empty() -- generating an associated symbol
+ * cpumask_empty.constprop.3 that appears in the audit. If the const that
+ * is passed in comes from __init, like say nmi_ipi_mask, we get a
+ * meaningless section warning. May need to add isra symbols too...
+ * This pattern is identified by
+ * tosec = init section
+ * fromsec = text section
+ * refsymname = *.constprop.*
+ *
+ **/
+static int secref_whitelist(const char *fromsec, const char *fromsym,
+ const char *tosec, const char *tosym)
+{
+ /* Check for pattern 1 */
+ if (match(tosec, PATTERNS(ALL_INIT_DATA_SECTIONS)) &&
+ match(fromsec, PATTERNS(DATA_SECTIONS)) &&
+ strstarts(fromsym, "__param"))
+ return 0;
+
+ /* Check for pattern 1a */
+ if (strcmp(tosec, ".init.text") == 0 &&
+ match(fromsec, PATTERNS(DATA_SECTIONS)) &&
+ strstarts(fromsym, "__param_ops_"))
+ return 0;
+
+ /* symbols in data sections that may refer to any init/exit sections */
+ if (match(fromsec, PATTERNS(DATA_SECTIONS)) &&
+ match(tosec, PATTERNS(ALL_INIT_SECTIONS, ALL_EXIT_SECTIONS)) &&
+ match(fromsym, PATTERNS("*_template", // scsi uses *_template a lot
+ "*_timer", // arm uses ops structures named _timer a lot
+ "*_sht", // scsi also used *_sht to some extent
+ "*_ops",
+ "*_probe",
+ "*_probe_one",
+ "*_console")))
+ return 0;
+
+ /* symbols in data sections that may refer to meminit sections */
+ if (match(fromsec, PATTERNS(DATA_SECTIONS)) &&
+ match(tosec, PATTERNS(ALL_XXXINIT_SECTIONS, ALL_XXXEXIT_SECTIONS)) &&
+ match(fromsym, PATTERNS("*driver")))
+ return 0;
+
+ /*
+ * symbols in data sections must not refer to .exit.*, but there are
+ * quite a few offenders, so hide these unless for W=1 builds until
+ * these are fixed.
+ */
+ if (!extra_warn &&
+ match(fromsec, PATTERNS(DATA_SECTIONS)) &&
+ match(tosec, PATTERNS(EXIT_SECTIONS)) &&
+ match(fromsym, PATTERNS("*driver")))
+ return 0;
+
+ /* Check for pattern 3 */
+ if (strstarts(fromsec, ".head.text") &&
+ match(tosec, PATTERNS(ALL_INIT_SECTIONS)))
+ return 0;
+
+ /* Check for pattern 4 */
+ if (match(tosym, PATTERNS("__init_begin", "_sinittext", "_einittext")))
+ return 0;
+
+ /* Check for pattern 5 */
+ if (match(fromsec, PATTERNS(ALL_TEXT_SECTIONS)) &&
+ match(tosec, PATTERNS(ALL_INIT_SECTIONS)) &&
+ match(fromsym, PATTERNS("*.constprop.*")))
+ return 0;
+
+ return 1;
+}
+
+/*
+ * If there's no name there, ignore it; likewise, ignore it if it's
+ * one of the magic symbols emitted used by current tools.
+ *
+ * Otherwise if find_symbols_between() returns those symbols, they'll
+ * fail the whitelist tests and cause lots of false alarms ... fixable
+ * only by merging __exit and __init sections into __text, bloating
+ * the kernel (which is especially evil on embedded platforms).
+ */
+static inline int is_valid_name(struct elf_info *elf, Elf_Sym *sym)
+{
+ const char *name = elf->strtab + sym->st_name;
+
+ if (!name || !strlen(name))
+ return 0;
+ return !is_mapping_symbol(name);
+}
+
+/* Look up the nearest symbol based on the section and the address */
+static Elf_Sym *find_nearest_sym(struct elf_info *elf, Elf_Addr addr,
+ unsigned int secndx, bool allow_negative,
+ Elf_Addr min_distance)
+{
+ Elf_Sym *sym;
+ Elf_Sym *near = NULL;
+ Elf_Addr sym_addr, distance;
+ bool is_arm = (elf->hdr->e_machine == EM_ARM);
+
+ for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {
+ if (get_secindex(elf, sym) != secndx)
+ continue;
+ if (!is_valid_name(elf, sym))
+ continue;
+
+ sym_addr = sym->st_value;
+
+ /*
+ * For ARM Thumb instruction, the bit 0 of st_value is set
+ * if the symbol is STT_FUNC type. Mask it to get the address.
+ */
+ if (is_arm && ELF_ST_TYPE(sym->st_info) == STT_FUNC)
+ sym_addr &= ~1;
+
+ if (addr >= sym_addr)
+ distance = addr - sym_addr;
+ else if (allow_negative)
+ distance = sym_addr - addr;
+ else
+ continue;
+
+ if (distance <= min_distance) {
+ min_distance = distance;
+ near = sym;
+ }
+
+ if (min_distance == 0)
+ break;
+ }
+ return near;
+}
+
+static Elf_Sym *find_fromsym(struct elf_info *elf, Elf_Addr addr,
+ unsigned int secndx)
+{
+ return find_nearest_sym(elf, addr, secndx, false, ~0);
+}
+
+static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym)
+{
+ /* If the supplied symbol has a valid name, return it */
+ if (is_valid_name(elf, sym))
+ return sym;
+
+ /*
+ * Strive to find a better symbol name, but the resulting name may not
+ * match the symbol referenced in the original code.
+ */
+ return find_nearest_sym(elf, addr, get_secindex(elf, sym), true, 20);
+}
+
+static bool is_executable_section(struct elf_info *elf, unsigned int secndx)
+{
+ if (secndx >= elf->num_sections)
+ return false;
+
+ return (elf->sechdrs[secndx].sh_flags & SHF_EXECINSTR) != 0;
+}
+
+static void default_mismatch_handler(const char *modname, struct elf_info *elf,
+ const struct sectioncheck* const mismatch,
+ Elf_Sym *tsym,
+ unsigned int fsecndx, const char *fromsec, Elf_Addr faddr,
+ const char *tosec, Elf_Addr taddr)
+{
+ Elf_Sym *from;
+ const char *tosym;
+ const char *fromsym;
+
+ from = find_fromsym(elf, faddr, fsecndx);
+ fromsym = sym_name(elf, from);
+
+ tsym = find_tosym(elf, taddr, tsym);
+ tosym = sym_name(elf, tsym);
+
+ /* check whitelist - we may ignore it */
+ if (!secref_whitelist(fromsec, fromsym, tosec, tosym))
+ return;
+
+ sec_mismatch_count++;
+
+ warn("%s: section mismatch in reference: %s+0x%x (section: %s) -> %s (section: %s)\n",
+ modname, fromsym, (unsigned int)(faddr - from->st_value), fromsec, tosym, tosec);
+
+ if (mismatch->mismatch == EXTABLE_TO_NON_TEXT) {
+ if (match(tosec, mismatch->bad_tosec))
+ fatal("The relocation at %s+0x%lx references\n"
+ "section \"%s\" which is black-listed.\n"
+ "Something is seriously wrong and should be fixed.\n"
+ "You might get more information about where this is\n"
+ "coming from by using scripts/check_extable.sh %s\n",
+ fromsec, (long)faddr, tosec, modname);
+ else if (is_executable_section(elf, get_secindex(elf, tsym)))
+ warn("The relocation at %s+0x%lx references\n"
+ "section \"%s\" which is not in the list of\n"
+ "authorized sections. If you're adding a new section\n"
+ "and/or if this reference is valid, add \"%s\" to the\n"
+ "list of authorized sections to jump to on fault.\n"
+ "This can be achieved by adding \"%s\" to\n"
+ "OTHER_TEXT_SECTIONS in scripts/mod/modpost.c.\n",
+ fromsec, (long)faddr, tosec, tosec, tosec);
+ else
+ error("%s+0x%lx references non-executable section '%s'\n",
+ fromsec, (long)faddr, tosec);
+ }
+}
+
+static void check_export_symbol(struct module *mod, struct elf_info *elf,
+ Elf_Addr faddr, const char *secname,
+ Elf_Sym *sym)
+{
+ static const char *prefix = "__export_symbol_";
+ const char *label_name, *name, *data;
+ Elf_Sym *label;
+ struct symbol *s;
+ bool is_gpl;
+
+ label = find_fromsym(elf, faddr, elf->export_symbol_secndx);
+ label_name = sym_name(elf, label);
+
+ if (!strstarts(label_name, prefix)) {
+ error("%s: .export_symbol section contains strange symbol '%s'\n",
+ mod->name, label_name);
+ return;
+ }
+
+ if (ELF_ST_BIND(sym->st_info) != STB_GLOBAL &&
+ ELF_ST_BIND(sym->st_info) != STB_WEAK) {
+ error("%s: local symbol '%s' was exported\n", mod->name,
+ label_name + strlen(prefix));
+ return;
+ }
+
+ name = sym_name(elf, sym);
+ if (strcmp(label_name + strlen(prefix), name)) {
+ error("%s: .export_symbol section references '%s', but it does not seem to be an export symbol\n",
+ mod->name, name);
+ return;
+ }
+
+ data = sym_get_data(elf, label); /* license */
+ if (!strcmp(data, "GPL")) {
+ is_gpl = true;
+ } else if (!strcmp(data, "")) {
+ is_gpl = false;
+ } else {
+ error("%s: unknown license '%s' was specified for '%s'\n",
+ mod->name, data, name);
+ return;
+ }
+
+ data += strlen(data) + 1; /* namespace */
+ s = sym_add_exported(name, mod, is_gpl, data);
+
+ /*
+ * We need to be aware whether we are exporting a function or
+ * a data on some architectures.
+ */
+ s->is_func = (ELF_ST_TYPE(sym->st_info) == STT_FUNC);
+
+ /*
+ * For parisc64, symbols prefixed $$ from the library have the symbol type
+ * STT_LOPROC. They should be handled as functions too.
+ */
+ if (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64 &&
+ elf->hdr->e_machine == EM_PARISC &&
+ ELF_ST_TYPE(sym->st_info) == STT_LOPROC)
+ s->is_func = true;
+
+ if (match(secname, PATTERNS(INIT_SECTIONS)))
+ warn("%s: %s: EXPORT_SYMBOL used for init symbol. Remove __init or EXPORT_SYMBOL.\n",
+ mod->name, name);
+ else if (match(secname, PATTERNS(EXIT_SECTIONS)))
+ warn("%s: %s: EXPORT_SYMBOL used for exit symbol. Remove __exit or EXPORT_SYMBOL.\n",
+ mod->name, name);
+}
+
+static void check_section_mismatch(struct module *mod, struct elf_info *elf,
+ Elf_Sym *sym,
+ unsigned int fsecndx, const char *fromsec,
+ Elf_Addr faddr, Elf_Addr taddr)
+{
+ const char *tosec = sec_name(elf, get_secindex(elf, sym));
+ const struct sectioncheck *mismatch;
+
+ if (module_enabled && elf->export_symbol_secndx == fsecndx) {
+ check_export_symbol(mod, elf, faddr, tosec, sym);
+ return;
+ }
+
+ mismatch = section_mismatch(fromsec, tosec);
+ if (!mismatch)
+ return;
+
+ default_mismatch_handler(mod->name, elf, mismatch, sym,
+ fsecndx, fromsec, faddr,
+ tosec, taddr);
+}
+
+static Elf_Addr addend_386_rel(uint32_t *location, unsigned int r_type)
+{
+ switch (r_type) {
+ case R_386_32:
+ return TO_NATIVE(*location);
+ case R_386_PC32:
+ return TO_NATIVE(*location) + 4;
+ }
+
+ return (Elf_Addr)(-1);
+}
+
+#ifndef R_ARM_CALL
+#define R_ARM_CALL 28
+#endif
+#ifndef R_ARM_JUMP24
+#define R_ARM_JUMP24 29
+#endif
+
+#ifndef R_ARM_THM_CALL
+#define R_ARM_THM_CALL 10
+#endif
+#ifndef R_ARM_THM_JUMP24
+#define R_ARM_THM_JUMP24 30
+#endif
+
+#ifndef R_ARM_MOVW_ABS_NC
+#define R_ARM_MOVW_ABS_NC 43
+#endif
+
+#ifndef R_ARM_MOVT_ABS
+#define R_ARM_MOVT_ABS 44
+#endif
+
+#ifndef R_ARM_THM_MOVW_ABS_NC
+#define R_ARM_THM_MOVW_ABS_NC 47
+#endif
+
+#ifndef R_ARM_THM_MOVT_ABS
+#define R_ARM_THM_MOVT_ABS 48
+#endif
+
+#ifndef R_ARM_THM_JUMP19
+#define R_ARM_THM_JUMP19 51
+#endif
+
+static int32_t sign_extend32(int32_t value, int index)
+{
+ uint8_t shift = 31 - index;
+
+ return (int32_t)(value << shift) >> shift;
+}
+
+static Elf_Addr addend_arm_rel(void *loc, Elf_Sym *sym, unsigned int r_type)
+{
+ uint32_t inst, upper, lower, sign, j1, j2;
+ int32_t offset;
+
+ switch (r_type) {
+ case R_ARM_ABS32:
+ case R_ARM_REL32:
+ inst = TO_NATIVE(*(uint32_t *)loc);
+ return inst + sym->st_value;
+ case R_ARM_MOVW_ABS_NC:
+ case R_ARM_MOVT_ABS:
+ inst = TO_NATIVE(*(uint32_t *)loc);
+ offset = sign_extend32(((inst & 0xf0000) >> 4) | (inst & 0xfff),
+ 15);
+ return offset + sym->st_value;
+ case R_ARM_PC24:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ inst = TO_NATIVE(*(uint32_t *)loc);
+ offset = sign_extend32((inst & 0x00ffffff) << 2, 25);
+ return offset + sym->st_value + 8;
+ case R_ARM_THM_MOVW_ABS_NC:
+ case R_ARM_THM_MOVT_ABS:
+ upper = TO_NATIVE(*(uint16_t *)loc);
+ lower = TO_NATIVE(*((uint16_t *)loc + 1));
+ offset = sign_extend32(((upper & 0x000f) << 12) |
+ ((upper & 0x0400) << 1) |
+ ((lower & 0x7000) >> 4) |
+ (lower & 0x00ff),
+ 15);
+ return offset + sym->st_value;
+ case R_ARM_THM_JUMP19:
+ /*
+ * Encoding T3:
+ * S = upper[10]
+ * imm6 = upper[5:0]
+ * J1 = lower[13]
+ * J2 = lower[11]
+ * imm11 = lower[10:0]
+ * imm32 = SignExtend(S:J2:J1:imm6:imm11:'0')
+ */
+ upper = TO_NATIVE(*(uint16_t *)loc);
+ lower = TO_NATIVE(*((uint16_t *)loc + 1));
+
+ sign = (upper >> 10) & 1;
+ j1 = (lower >> 13) & 1;
+ j2 = (lower >> 11) & 1;
+ offset = sign_extend32((sign << 20) | (j2 << 19) | (j1 << 18) |
+ ((upper & 0x03f) << 12) |
+ ((lower & 0x07ff) << 1),
+ 20);
+ return offset + sym->st_value + 4;
+ case R_ARM_THM_CALL:
+ case R_ARM_THM_JUMP24:
+ /*
+ * Encoding T4:
+ * S = upper[10]
+ * imm10 = upper[9:0]
+ * J1 = lower[13]
+ * J2 = lower[11]
+ * imm11 = lower[10:0]
+ * I1 = NOT(J1 XOR S)
+ * I2 = NOT(J2 XOR S)
+ * imm32 = SignExtend(S:I1:I2:imm10:imm11:'0')
+ */
+ upper = TO_NATIVE(*(uint16_t *)loc);
+ lower = TO_NATIVE(*((uint16_t *)loc + 1));
+
+ sign = (upper >> 10) & 1;
+ j1 = (lower >> 13) & 1;
+ j2 = (lower >> 11) & 1;
+ offset = sign_extend32((sign << 24) |
+ ((~(j1 ^ sign) & 1) << 23) |
+ ((~(j2 ^ sign) & 1) << 22) |
+ ((upper & 0x03ff) << 12) |
+ ((lower & 0x07ff) << 1),
+ 24);
+ return offset + sym->st_value + 4;
+ }
+
+ return (Elf_Addr)(-1);
+}
+
+static Elf_Addr addend_mips_rel(uint32_t *location, unsigned int r_type)
+{
+ uint32_t inst;
+
+ inst = TO_NATIVE(*location);
+ switch (r_type) {
+ case R_MIPS_LO16:
+ return inst & 0xffff;
+ case R_MIPS_26:
+ return (inst & 0x03ffffff) << 2;
+ case R_MIPS_32:
+ return inst;
+ }
+ return (Elf_Addr)(-1);
+}
+
+#ifndef EM_RISCV
+#define EM_RISCV 243
+#endif
+
+#ifndef R_RISCV_SUB32
+#define R_RISCV_SUB32 39
+#endif
+
+#ifndef EM_LOONGARCH
+#define EM_LOONGARCH 258
+#endif
+
+#ifndef R_LARCH_SUB32
+#define R_LARCH_SUB32 55
+#endif
+
+static void get_rel_type_and_sym(struct elf_info *elf, uint64_t r_info,
+ unsigned int *r_type, unsigned int *r_sym)
+{
+ typedef struct {
+ Elf64_Word r_sym; /* Symbol index */
+ unsigned char r_ssym; /* Special symbol for 2nd relocation */
+ unsigned char r_type3; /* 3rd relocation type */
+ unsigned char r_type2; /* 2nd relocation type */
+ unsigned char r_type; /* 1st relocation type */
+ } Elf64_Mips_R_Info;
+
+ bool is_64bit = (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64);
+
+ if (elf->hdr->e_machine == EM_MIPS && is_64bit) {
+ Elf64_Mips_R_Info *mips64_r_info = (void *)&r_info;
+
+ *r_type = mips64_r_info->r_type;
+ *r_sym = TO_NATIVE(mips64_r_info->r_sym);
+ return;
+ }
+
+ if (is_64bit) {
+ Elf64_Xword r_info64 = r_info;
+
+ r_info = TO_NATIVE(r_info64);
+ } else {
+ Elf32_Word r_info32 = r_info;
+
+ r_info = TO_NATIVE(r_info32);
+ }
+
+ *r_type = ELF_R_TYPE(r_info);
+ *r_sym = ELF_R_SYM(r_info);
+}
+
+static void section_rela(struct module *mod, struct elf_info *elf,
+ Elf_Shdr *sechdr)
+{
+ Elf_Rela *rela;
+ unsigned int fsecndx = sechdr->sh_info;
+ const char *fromsec = sec_name(elf, fsecndx);
+ Elf_Rela *start = (void *)elf->hdr + sechdr->sh_offset;
+ Elf_Rela *stop = (void *)start + sechdr->sh_size;
+
+ /* if from section (name) is know good then skip it */
+ if (match(fromsec, section_white_list))
+ return;
+
+ for (rela = start; rela < stop; rela++) {
+ Elf_Sym *tsym;
+ Elf_Addr taddr, r_offset;
+ unsigned int r_type, r_sym;
+
+ r_offset = TO_NATIVE(rela->r_offset);
+ get_rel_type_and_sym(elf, rela->r_info, &r_type, &r_sym);
+
+ tsym = elf->symtab_start + r_sym;
+ taddr = tsym->st_value + TO_NATIVE(rela->r_addend);
+
+ switch (elf->hdr->e_machine) {
+ case EM_RISCV:
+ if (!strcmp("__ex_table", fromsec) &&
+ r_type == R_RISCV_SUB32)
+ continue;
+ break;
+ case EM_LOONGARCH:
+ if (!strcmp("__ex_table", fromsec) &&
+ r_type == R_LARCH_SUB32)
+ continue;
+ break;
+ }
+
+ check_section_mismatch(mod, elf, tsym,
+ fsecndx, fromsec, r_offset, taddr);
+ }
+}
+
+static void section_rel(struct module *mod, struct elf_info *elf,
+ Elf_Shdr *sechdr)
+{
+ Elf_Rel *rel;
+ unsigned int fsecndx = sechdr->sh_info;
+ const char *fromsec = sec_name(elf, fsecndx);
+ Elf_Rel *start = (void *)elf->hdr + sechdr->sh_offset;
+ Elf_Rel *stop = (void *)start + sechdr->sh_size;
+
+ /* if from section (name) is know good then skip it */
+ if (match(fromsec, section_white_list))
+ return;
+
+ for (rel = start; rel < stop; rel++) {
+ Elf_Sym *tsym;
+ Elf_Addr taddr = 0, r_offset;
+ unsigned int r_type, r_sym;
+ void *loc;
+
+ r_offset = TO_NATIVE(rel->r_offset);
+ get_rel_type_and_sym(elf, rel->r_info, &r_type, &r_sym);
+
+ loc = sym_get_data_by_offset(elf, fsecndx, r_offset);
+ tsym = elf->symtab_start + r_sym;
+
+ switch (elf->hdr->e_machine) {
+ case EM_386:
+ taddr = addend_386_rel(loc, r_type);
+ break;
+ case EM_ARM:
+ taddr = addend_arm_rel(loc, tsym, r_type);
+ break;
+ case EM_MIPS:
+ taddr = addend_mips_rel(loc, r_type);
+ break;
+ default:
+ fatal("Please add code to calculate addend for this architecture\n");
+ }
+
+ check_section_mismatch(mod, elf, tsym,
+ fsecndx, fromsec, r_offset, taddr);
+ }
+}
+
+/**
+ * A module includes a number of sections that are discarded
+ * either when loaded or when used as built-in.
+ * For loaded modules all functions marked __init and all data
+ * marked __initdata will be discarded when the module has been initialized.
+ * Likewise for modules used built-in the sections marked __exit
+ * are discarded because __exit marked function are supposed to be called
+ * only when a module is unloaded which never happens for built-in modules.
+ * The check_sec_ref() function traverses all relocation records
+ * to find all references to a section that reference a section that will
+ * be discarded and warns about it.
+ **/
+static void check_sec_ref(struct module *mod, struct elf_info *elf)
+{
+ int i;
+ Elf_Shdr *sechdrs = elf->sechdrs;
+
+ /* Walk through all sections */
+ for (i = 0; i < elf->num_sections; i++) {
+ check_section(mod->name, elf, &elf->sechdrs[i]);
+ /* We want to process only relocation sections and not .init */
+ if (sechdrs[i].sh_type == SHT_RELA)
+ section_rela(mod, elf, &elf->sechdrs[i]);
+ else if (sechdrs[i].sh_type == SHT_REL)
+ section_rel(mod, elf, &elf->sechdrs[i]);
+ }
+}
+
+static char *remove_dot(char *s)
+{
+ size_t n = strcspn(s, ".");
+
+ if (n && s[n]) {
+ size_t m = strspn(s + n + 1, "0123456789");
+ if (m && (s[n + m + 1] == '.' || s[n + m + 1] == 0))
+ s[n] = 0;
+ }
+ return s;
+}
+
+/*
+ * The CRCs are recorded in .*.cmd files in the form of:
+ * #SYMVER <name> <crc>
+ */
+static void extract_crcs_for_object(const char *object, struct module *mod)
+{
+ char cmd_file[PATH_MAX];
+ char *buf, *p;
+ const char *base;
+ int dirlen, ret;
+
+ base = strrchr(object, '/');
+ if (base) {
+ base++;
+ dirlen = base - object;
+ } else {
+ dirlen = 0;
+ base = object;
+ }
+
+ ret = snprintf(cmd_file, sizeof(cmd_file), "%.*s.%s.cmd",
+ dirlen, object, base);
+ if (ret >= sizeof(cmd_file)) {
+ error("%s: too long path was truncated\n", cmd_file);
+ return;
+ }
+
+ buf = read_text_file(cmd_file);
+ p = buf;
+
+ while ((p = strstr(p, "\n#SYMVER "))) {
+ char *name;
+ size_t namelen;
+ unsigned int crc;
+ struct symbol *sym;
+
+ name = p + strlen("\n#SYMVER ");
+
+ p = strchr(name, ' ');
+ if (!p)
+ break;
+
+ namelen = p - name;
+ p++;
+
+ if (!isdigit(*p))
+ continue; /* skip this line */
+
+ crc = strtoul(p, &p, 0);
+ if (*p != '\n')
+ continue; /* skip this line */
+
+ name[namelen] = '\0';
+
+ /*
+ * sym_find_with_module() may return NULL here.
+ * It typically occurs when CONFIG_TRIM_UNUSED_KSYMS=y.
+ * Since commit e1327a127703, genksyms calculates CRCs of all
+ * symbols, including trimmed ones. Ignore orphan CRCs.
+ */
+ sym = sym_find_with_module(name, mod);
+ if (sym)
+ sym_set_crc(sym, crc);
+ }
+
+ free(buf);
+}
+
+/*
+ * The symbol versions (CRC) are recorded in the .*.cmd files.
+ * Parse them to retrieve CRCs for the current module.
+ */
+static void mod_set_crcs(struct module *mod)
+{
+ char objlist[PATH_MAX];
+ char *buf, *p, *obj;
+ int ret;
+
+ if (mod->is_vmlinux) {
+ strcpy(objlist, ".vmlinux.objs");
+ } else {
+ /* objects for a module are listed in the *.mod file. */
+ ret = snprintf(objlist, sizeof(objlist), "%s.mod", mod->name);
+ if (ret >= sizeof(objlist)) {
+ error("%s: too long path was truncated\n", objlist);
+ return;
+ }
+ }
+
+ buf = read_text_file(objlist);
+ p = buf;
+
+ while ((obj = strsep(&p, "\n")) && obj[0])
+ extract_crcs_for_object(obj, mod);
+
+ free(buf);
+}
+
+static void read_symbols(const char *modname)
+{
+ const char *symname;
+ char *version;
+ char *license;
+ char *namespace;
+ struct module *mod;
+ struct elf_info info = { };
+ Elf_Sym *sym;
+
+ if (!parse_elf(&info, modname))
+ return;
+
+ if (!strends(modname, ".o")) {
+ error("%s: filename must be suffixed with .o\n", modname);
+ return;
+ }
+
+ /* strip trailing .o */
+ mod = new_module(modname, strlen(modname) - strlen(".o"));
+
+ if (!mod->is_vmlinux) {
+ license = get_modinfo(&info, "license");
+ if (!license)
+ error("missing MODULE_LICENSE() in %s\n", modname);
+ while (license) {
+ if (!license_is_gpl_compatible(license)) {
+ mod->is_gpl_compatible = false;
+ break;
+ }
+ license = get_next_modinfo(&info, "license", license);
+ }
+
+ namespace = get_modinfo(&info, "import_ns");
+ while (namespace) {
+ add_namespace(&mod->imported_namespaces, namespace);
+ namespace = get_next_modinfo(&info, "import_ns",
+ namespace);
+ }
+ }
+
+ if (extra_warn && !get_modinfo(&info, "description"))
+ warn("missing MODULE_DESCRIPTION() in %s\n", modname);
+ for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
+ symname = remove_dot(info.strtab + sym->st_name);
+
+ handle_symbol(mod, &info, sym, symname);
+ handle_moddevtable(mod, &info, sym, symname);
+ }
+
+ check_sec_ref(mod, &info);
+
+ if (!mod->is_vmlinux) {
+ version = get_modinfo(&info, "version");
+ if (version || all_versions)
+ get_src_version(mod->name, mod->srcversion,
+ sizeof(mod->srcversion) - 1);
+ }
+
+ parse_elf_finish(&info);
+
+ if (modversions) {
+ /*
+ * Our trick to get versioning for module struct etc. - it's
+ * never passed as an argument to an exported function, so
+ * the automatic versioning doesn't pick it up, but it's really
+ * important anyhow.
+ */
+ sym_add_unresolved("module_layout", mod, false);
+
+ mod_set_crcs(mod);
+ }
+}
+
+static void read_symbols_from_files(const char *filename)
+{
+ FILE *in = stdin;
+ char fname[PATH_MAX];
+
+ in = fopen(filename, "r");
+ if (!in)
+ fatal("Can't open filenames file %s: %m", filename);
+
+ while (fgets(fname, PATH_MAX, in) != NULL) {
+ if (strends(fname, "\n"))
+ fname[strlen(fname)-1] = '\0';
+ read_symbols(fname);
+ }
+
+ fclose(in);
+}
+
+#define SZ 500
+
+/* We first write the generated file into memory using the
+ * following helper, then compare to the file on disk and
+ * only update the later if anything changed */
+
+void __attribute__((format(printf, 2, 3))) buf_printf(struct buffer *buf,
+ const char *fmt, ...)
+{
+ char tmp[SZ];
+ int len;
+ va_list ap;
+
+ va_start(ap, fmt);
+ len = vsnprintf(tmp, SZ, fmt, ap);
+ buf_write(buf, tmp, len);
+ va_end(ap);
+}
+
+void buf_write(struct buffer *buf, const char *s, int len)
+{
+ if (buf->size - buf->pos < len) {
+ buf->size += len + SZ;
+ buf->p = NOFAIL(realloc(buf->p, buf->size));
+ }
+ strncpy(buf->p + buf->pos, s, len);
+ buf->pos += len;
+}
+
+static void check_exports(struct module *mod)
+{
+ struct symbol *s, *exp;
+
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
+ const char *basename;
+ exp = find_symbol(s->name);
+ if (!exp) {
+ if (!s->weak && nr_unresolved++ < MAX_UNRESOLVED_REPORTS)
+ modpost_log(warn_unresolved ? LOG_WARN : LOG_ERROR,
+ "\"%s\" [%s.ko] undefined!\n",
+ s->name, mod->name);
+ continue;
+ }
+ if (exp->module == mod) {
+ error("\"%s\" [%s.ko] was exported without definition\n",
+ s->name, mod->name);
+ continue;
+ }
+
+ exp->used = true;
+ s->module = exp->module;
+ s->crc_valid = exp->crc_valid;
+ s->crc = exp->crc;
+
+ basename = strrchr(mod->name, '/');
+ if (basename)
+ basename++;
+ else
+ basename = mod->name;
+
+ if (!contains_namespace(&mod->imported_namespaces, exp->namespace)) {
+ modpost_log(allow_missing_ns_imports ? LOG_WARN : LOG_ERROR,
+ "module %s uses symbol %s from namespace %s, but does not import it.\n",
+ basename, exp->name, exp->namespace);
+ add_namespace(&mod->missing_namespaces, exp->namespace);
+ }
+
+ if (!mod->is_gpl_compatible && exp->is_gpl_only)
+ error("GPL-incompatible module %s.ko uses GPL-only symbol '%s'\n",
+ basename, exp->name);
+ }
+}
+
+static void handle_white_list_exports(const char *white_list)
+{
+ char *buf, *p, *name;
+
+ buf = read_text_file(white_list);
+ p = buf;
+
+ while ((name = strsep(&p, "\n"))) {
+ struct symbol *sym = find_symbol(name);
+
+ if (sym)
+ sym->used = true;
+ }
+
+ free(buf);
+}
+
+static void check_modname_len(struct module *mod)
+{
+ const char *mod_name;
+
+ mod_name = strrchr(mod->name, '/');
+ if (mod_name == NULL)
+ mod_name = mod->name;
+ else
+ mod_name++;
+ if (strlen(mod_name) >= MODULE_NAME_LEN)
+ error("module name is too long [%s.ko]\n", mod->name);
+}
+
+/**
+ * Header for the generated file
+ **/
+static void add_header(struct buffer *b, struct module *mod)
+{
+ buf_printf(b, "#include <linux/module.h>\n");
+ /*
+ * Include build-salt.h after module.h in order to
+ * inherit the definitions.
+ */
+ buf_printf(b, "#define INCLUDE_VERMAGIC\n");
+ buf_printf(b, "#include <linux/build-salt.h>\n");
+ buf_printf(b, "#include <linux/elfnote-lto.h>\n");
+ buf_printf(b, "#include <linux/export-internal.h>\n");
+ buf_printf(b, "#include <linux/vermagic.h>\n");
+ buf_printf(b, "#include <linux/compiler.h>\n");
+ buf_printf(b, "\n");
+ buf_printf(b, "#ifdef CONFIG_UNWINDER_ORC\n");
+ buf_printf(b, "#include <asm/orc_header.h>\n");
+ buf_printf(b, "ORC_HEADER;\n");
+ buf_printf(b, "#endif\n");
+ buf_printf(b, "\n");
+ buf_printf(b, "BUILD_SALT;\n");
+ buf_printf(b, "BUILD_LTO_INFO;\n");
+ buf_printf(b, "\n");
+ buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
+ buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
+ buf_printf(b, "\n");
+ buf_printf(b, "__visible struct module __this_module\n");
+ buf_printf(b, "__section(\".gnu.linkonce.this_module\") = {\n");
+ buf_printf(b, "\t.name = KBUILD_MODNAME,\n");
+ if (mod->has_init)
+ buf_printf(b, "\t.init = init_module,\n");
+ if (mod->has_cleanup)
+ buf_printf(b, "#ifdef CONFIG_MODULE_UNLOAD\n"
+ "\t.exit = cleanup_module,\n"
+ "#endif\n");
+ buf_printf(b, "\t.arch = MODULE_ARCH_INIT,\n");
+ buf_printf(b, "};\n");
+
+ if (!external_module)
+ buf_printf(b, "\nMODULE_INFO(intree, \"Y\");\n");
+
+ buf_printf(b,
+ "\n"
+ "#ifdef CONFIG_RETPOLINE\n"
+ "MODULE_INFO(retpoline, \"Y\");\n"
+ "#endif\n");
+
+ if (strstarts(mod->name, "drivers/staging"))
+ buf_printf(b, "\nMODULE_INFO(staging, \"Y\");\n");
+
+ if (strstarts(mod->name, "tools/testing"))
+ buf_printf(b, "\nMODULE_INFO(test, \"Y\");\n");
+}
+
+static void add_exported_symbols(struct buffer *buf, struct module *mod)
+{
+ struct symbol *sym;
+
+ /* generate struct for exported symbols */
+ buf_printf(buf, "\n");
+ list_for_each_entry(sym, &mod->exported_symbols, list) {
+ if (trim_unused_exports && !sym->used)
+ continue;
+
+ buf_printf(buf, "KSYMTAB_%s(%s, \"%s\", \"%s\");\n",
+ sym->is_func ? "FUNC" : "DATA", sym->name,
+ sym->is_gpl_only ? "_gpl" : "", sym->namespace);
+ }
+
+ if (!modversions)
+ return;
+
+ /* record CRCs for exported symbols */
+ buf_printf(buf, "\n");
+ list_for_each_entry(sym, &mod->exported_symbols, list) {
+ if (trim_unused_exports && !sym->used)
+ continue;
+
+ if (!sym->crc_valid)
+ warn("EXPORT symbol \"%s\" [%s%s] version generation failed, symbol will not be versioned.\n"
+ "Is \"%s\" prototyped in <asm/asm-prototypes.h>?\n",
+ sym->name, mod->name, mod->is_vmlinux ? "" : ".ko",
+ sym->name);
+
+ buf_printf(buf, "SYMBOL_CRC(%s, 0x%08x, \"%s\");\n",
+ sym->name, sym->crc, sym->is_gpl_only ? "_gpl" : "");
+ }
+}
+
+/**
+ * Record CRCs for unresolved symbols
+ **/
+static void add_versions(struct buffer *b, struct module *mod)
+{
+ struct symbol *s;
+
+ if (!modversions)
+ return;
+
+ buf_printf(b, "\n");
+ buf_printf(b, "static const struct modversion_info ____versions[]\n");
+ buf_printf(b, "__used __section(\"__versions\") = {\n");
+
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
+ if (!s->module)
+ continue;
+ if (!s->crc_valid) {
+ warn("\"%s\" [%s.ko] has no CRC!\n",
+ s->name, mod->name);
+ continue;
+ }
+ if (strlen(s->name) >= MODULE_NAME_LEN) {
+ error("too long symbol \"%s\" [%s.ko]\n",
+ s->name, mod->name);
+ break;
+ }
+ buf_printf(b, "\t{ %#8x, \"%s\" },\n",
+ s->crc, s->name);
+ }
+
+ buf_printf(b, "};\n");
+}
+
+static void add_depends(struct buffer *b, struct module *mod)
+{
+ struct symbol *s;
+ int first = 1;
+
+ /* Clear ->seen flag of modules that own symbols needed by this. */
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
+ if (s->module)
+ s->module->seen = s->module->is_vmlinux;
+ }
+
+ buf_printf(b, "\n");
+ buf_printf(b, "MODULE_INFO(depends, \"");
+ list_for_each_entry(s, &mod->unresolved_symbols, list) {
+ const char *p;
+ if (!s->module)
+ continue;
+
+ if (s->module->seen)
+ continue;
+
+ s->module->seen = true;
+ p = strrchr(s->module->name, '/');
+ if (p)
+ p++;
+ else
+ p = s->module->name;
+ buf_printf(b, "%s%s", first ? "" : ",", p);
+ first = 0;
+ }
+ buf_printf(b, "\");\n");
+}
+
+static void add_srcversion(struct buffer *b, struct module *mod)
+{
+ if (mod->srcversion[0]) {
+ buf_printf(b, "\n");
+ buf_printf(b, "MODULE_INFO(srcversion, \"%s\");\n",
+ mod->srcversion);
+ }
+}
+
+static void write_buf(struct buffer *b, const char *fname)
+{
+ FILE *file;
+
+ if (error_occurred)
+ return;
+
+ file = fopen(fname, "w");
+ if (!file) {
+ perror(fname);
+ exit(1);
+ }
+ if (fwrite(b->p, 1, b->pos, file) != b->pos) {
+ perror(fname);
+ exit(1);
+ }
+ if (fclose(file) != 0) {
+ perror(fname);
+ exit(1);
+ }
+}
+
+static void write_if_changed(struct buffer *b, const char *fname)
+{
+ char *tmp;
+ FILE *file;
+ struct stat st;
+
+ file = fopen(fname, "r");
+ if (!file)
+ goto write;
+
+ if (fstat(fileno(file), &st) < 0)
+ goto close_write;
+
+ if (st.st_size != b->pos)
+ goto close_write;
+
+ tmp = NOFAIL(malloc(b->pos));
+ if (fread(tmp, 1, b->pos, file) != b->pos)
+ goto free_write;
+
+ if (memcmp(tmp, b->p, b->pos) != 0)
+ goto free_write;
+
+ free(tmp);
+ fclose(file);
+ return;
+
+ free_write:
+ free(tmp);
+ close_write:
+ fclose(file);
+ write:
+ write_buf(b, fname);
+}
+
+static void write_vmlinux_export_c_file(struct module *mod)
+{
+ struct buffer buf = { };
+
+ buf_printf(&buf,
+ "#include <linux/export-internal.h>\n");
+
+ add_exported_symbols(&buf, mod);
+ write_if_changed(&buf, ".vmlinux.export.c");
+ free(buf.p);
+}
+
+/* do sanity checks, and generate *.mod.c file */
+static void write_mod_c_file(struct module *mod)
+{
+ struct buffer buf = { };
+ char fname[PATH_MAX];
+ int ret;
+
+ add_header(&buf, mod);
+ add_exported_symbols(&buf, mod);
+ add_versions(&buf, mod);
+ add_depends(&buf, mod);
+ add_moddevtable(&buf, mod);
+ add_srcversion(&buf, mod);
+
+ ret = snprintf(fname, sizeof(fname), "%s.mod.c", mod->name);
+ if (ret >= sizeof(fname)) {
+ error("%s: too long path was truncated\n", fname);
+ goto free;
+ }
+
+ write_if_changed(&buf, fname);
+
+free:
+ free(buf.p);
+}
+
+/* parse Module.symvers file. line format:
+ * 0x12345678<tab>symbol<tab>module<tab>export<tab>namespace
+ **/
+static void read_dump(const char *fname)
+{
+ char *buf, *pos, *line;
+
+ buf = read_text_file(fname);
+ if (!buf)
+ /* No symbol versions, silently ignore */
+ return;
+
+ pos = buf;
+
+ while ((line = get_line(&pos))) {
+ char *symname, *namespace, *modname, *d, *export;
+ unsigned int crc;
+ struct module *mod;
+ struct symbol *s;
+ bool gpl_only;
+
+ if (!(symname = strchr(line, '\t')))
+ goto fail;
+ *symname++ = '\0';
+ if (!(modname = strchr(symname, '\t')))
+ goto fail;
+ *modname++ = '\0';
+ if (!(export = strchr(modname, '\t')))
+ goto fail;
+ *export++ = '\0';
+ if (!(namespace = strchr(export, '\t')))
+ goto fail;
+ *namespace++ = '\0';
+
+ crc = strtoul(line, &d, 16);
+ if (*symname == '\0' || *modname == '\0' || *d != '\0')
+ goto fail;
+
+ if (!strcmp(export, "EXPORT_SYMBOL_GPL")) {
+ gpl_only = true;
+ } else if (!strcmp(export, "EXPORT_SYMBOL")) {
+ gpl_only = false;
+ } else {
+ error("%s: unknown license %s. skip", symname, export);
+ continue;
+ }
+
+ mod = find_module(modname);
+ if (!mod) {
+ mod = new_module(modname, strlen(modname));
+ mod->from_dump = true;
+ }
+ s = sym_add_exported(symname, mod, gpl_only, namespace);
+ sym_set_crc(s, crc);
+ }
+ free(buf);
+ return;
+fail:
+ free(buf);
+ fatal("parse error in symbol dump file\n");
+}
+
+static void write_dump(const char *fname)
+{
+ struct buffer buf = { };
+ struct module *mod;
+ struct symbol *sym;
+
+ list_for_each_entry(mod, &modules, list) {
+ if (mod->from_dump)
+ continue;
+ list_for_each_entry(sym, &mod->exported_symbols, list) {
+ if (trim_unused_exports && !sym->used)
+ continue;
+
+ buf_printf(&buf, "0x%08x\t%s\t%s\tEXPORT_SYMBOL%s\t%s\n",
+ sym->crc, sym->name, mod->name,
+ sym->is_gpl_only ? "_GPL" : "",
+ sym->namespace);
+ }
+ }
+ write_buf(&buf, fname);
+ free(buf.p);
+}
+
+static void write_namespace_deps_files(const char *fname)
+{
+ struct module *mod;
+ struct namespace_list *ns;
+ struct buffer ns_deps_buf = {};
+
+ list_for_each_entry(mod, &modules, list) {
+
+ if (mod->from_dump || list_empty(&mod->missing_namespaces))
+ continue;
+
+ buf_printf(&ns_deps_buf, "%s.ko:", mod->name);
+
+ list_for_each_entry(ns, &mod->missing_namespaces, list)
+ buf_printf(&ns_deps_buf, " %s", ns->namespace);
+
+ buf_printf(&ns_deps_buf, "\n");
+ }
+
+ write_if_changed(&ns_deps_buf, fname);
+ free(ns_deps_buf.p);
+}
+
+struct dump_list {
+ struct list_head list;
+ const char *file;
+};
+
+int main(int argc, char **argv)
+{
+ struct module *mod;
+ char *missing_namespace_deps = NULL;
+ char *unused_exports_white_list = NULL;
+ char *dump_write = NULL, *files_source = NULL;
+ int opt;
+ LIST_HEAD(dump_lists);
+ struct dump_list *dl, *dl2;
+
+ while ((opt = getopt(argc, argv, "ei:MmnT:to:au:WwENd:")) != -1) {
+ switch (opt) {
+ case 'e':
+ external_module = true;
+ break;
+ case 'i':
+ dl = NOFAIL(malloc(sizeof(*dl)));
+ dl->file = optarg;
+ list_add_tail(&dl->list, &dump_lists);
+ break;
+ case 'M':
+ module_enabled = true;
+ break;
+ case 'm':
+ modversions = true;
+ break;
+ case 'n':
+ ignore_missing_files = true;
+ break;
+ case 'o':
+ dump_write = optarg;
+ break;
+ case 'a':
+ all_versions = true;
+ break;
+ case 'T':
+ files_source = optarg;
+ break;
+ case 't':
+ trim_unused_exports = true;
+ break;
+ case 'u':
+ unused_exports_white_list = optarg;
+ break;
+ case 'W':
+ extra_warn = true;
+ break;
+ case 'w':
+ warn_unresolved = true;
+ break;
+ case 'E':
+ sec_mismatch_warn_only = false;
+ break;
+ case 'N':
+ allow_missing_ns_imports = true;
+ break;
+ case 'd':
+ missing_namespace_deps = optarg;
+ break;
+ default:
+ exit(1);
+ }
+ }
+
+ list_for_each_entry_safe(dl, dl2, &dump_lists, list) {
+ read_dump(dl->file);
+ list_del(&dl->list);
+ free(dl);
+ }
+
+ while (optind < argc)
+ read_symbols(argv[optind++]);
+
+ if (files_source)
+ read_symbols_from_files(files_source);
+
+ list_for_each_entry(mod, &modules, list) {
+ if (mod->from_dump || mod->is_vmlinux)
+ continue;
+
+ check_modname_len(mod);
+ check_exports(mod);
+ }
+
+ if (unused_exports_white_list)
+ handle_white_list_exports(unused_exports_white_list);
+
+ list_for_each_entry(mod, &modules, list) {
+ if (mod->from_dump)
+ continue;
+
+ if (mod->is_vmlinux)
+ write_vmlinux_export_c_file(mod);
+ else
+ write_mod_c_file(mod);
+ }
+
+ if (missing_namespace_deps)
+ write_namespace_deps_files(missing_namespace_deps);
+
+ if (dump_write)
+ write_dump(dump_write);
+ if (sec_mismatch_count && !sec_mismatch_warn_only)
+ error("Section mismatches detected.\n"
+ "Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
+
+ if (nr_unresolved > MAX_UNRESOLVED_REPORTS)
+ warn("suppressed %u unresolved symbol warnings because there were too many)\n",
+ nr_unresolved - MAX_UNRESOLVED_REPORTS);
+
+ return error_occurred ? 1 : 0;
+}
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
new file mode 100644
index 0000000000..5f94c2c9f2
--- /dev/null
+++ b/scripts/mod/modpost.h
@@ -0,0 +1,193 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <elf.h>
+
+#include "list.h"
+#include "elfconfig.h"
+
+/* On BSD-alike OSes elf.h defines these according to host's word size */
+#undef ELF_ST_BIND
+#undef ELF_ST_TYPE
+#undef ELF_R_SYM
+#undef ELF_R_TYPE
+
+#if KERNEL_ELFCLASS == ELFCLASS32
+
+#define Elf_Ehdr Elf32_Ehdr
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Addr Elf32_Addr
+#define Elf_Section Elf32_Half
+#define ELF_ST_BIND ELF32_ST_BIND
+#define ELF_ST_TYPE ELF32_ST_TYPE
+
+#define Elf_Rel Elf32_Rel
+#define Elf_Rela Elf32_Rela
+#define ELF_R_SYM ELF32_R_SYM
+#define ELF_R_TYPE ELF32_R_TYPE
+#else
+
+#define Elf_Ehdr Elf64_Ehdr
+#define Elf_Shdr Elf64_Shdr
+#define Elf_Sym Elf64_Sym
+#define Elf_Addr Elf64_Addr
+#define Elf_Section Elf64_Half
+#define ELF_ST_BIND ELF64_ST_BIND
+#define ELF_ST_TYPE ELF64_ST_TYPE
+
+#define Elf_Rel Elf64_Rel
+#define Elf_Rela Elf64_Rela
+#define ELF_R_SYM ELF64_R_SYM
+#define ELF_R_TYPE ELF64_R_TYPE
+#endif
+
+#if KERNEL_ELFDATA != HOST_ELFDATA
+
+static inline void __endian(const void *src, void *dest, unsigned int size)
+{
+ unsigned int i;
+ for (i = 0; i < size; i++)
+ ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
+}
+
+#define TO_NATIVE(x) \
+({ \
+ typeof(x) __x; \
+ __endian(&(x), &(__x), sizeof(__x)); \
+ __x; \
+})
+
+#else /* endianness matches */
+
+#define TO_NATIVE(x) (x)
+
+#endif
+
+#define NOFAIL(ptr) do_nofail((ptr), #ptr)
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+void *do_nofail(void *ptr, const char *expr);
+
+struct buffer {
+ char *p;
+ int pos;
+ int size;
+};
+
+void __attribute__((format(printf, 2, 3)))
+buf_printf(struct buffer *buf, const char *fmt, ...);
+
+void
+buf_write(struct buffer *buf, const char *s, int len);
+
+struct module {
+ struct list_head list;
+ struct list_head exported_symbols;
+ struct list_head unresolved_symbols;
+ bool is_gpl_compatible;
+ bool from_dump; /* true if module was loaded from *.symvers */
+ bool is_vmlinux;
+ bool seen;
+ bool has_init;
+ bool has_cleanup;
+ struct buffer dev_table_buf;
+ char srcversion[25];
+ // Missing namespace dependencies
+ struct list_head missing_namespaces;
+ // Actual imported namespaces
+ struct list_head imported_namespaces;
+ char name[];
+};
+
+struct elf_info {
+ size_t size;
+ Elf_Ehdr *hdr;
+ Elf_Shdr *sechdrs;
+ Elf_Sym *symtab_start;
+ Elf_Sym *symtab_stop;
+ unsigned int export_symbol_secndx; /* .export_symbol section */
+ char *strtab;
+ char *modinfo;
+ unsigned int modinfo_len;
+
+ /* support for 32bit section numbers */
+
+ unsigned int num_sections; /* max_secindex + 1 */
+ unsigned int secindex_strings;
+ /* if Nth symbol table entry has .st_shndx = SHN_XINDEX,
+ * take shndx from symtab_shndx_start[N] instead */
+ Elf32_Word *symtab_shndx_start;
+ Elf32_Word *symtab_shndx_stop;
+};
+
+/* Accessor for sym->st_shndx, hides ugliness of "64k sections" */
+static inline unsigned int get_secindex(const struct elf_info *info,
+ const Elf_Sym *sym)
+{
+ unsigned int index = sym->st_shndx;
+
+ /*
+ * Elf{32,64}_Sym::st_shndx is 2 byte. Big section numbers are available
+ * in the .symtab_shndx section.
+ */
+ if (index == SHN_XINDEX)
+ return info->symtab_shndx_start[sym - info->symtab_start];
+
+ /*
+ * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of
+ * the way to UINT_MAX-255..UINT_MAX, to avoid conflicting with real
+ * section indices.
+ */
+ if (index >= SHN_LORESERVE && index <= SHN_HIRESERVE)
+ return index - SHN_HIRESERVE - 1;
+
+ return index;
+}
+
+/* file2alias.c */
+void handle_moddevtable(struct module *mod, struct elf_info *info,
+ Elf_Sym *sym, const char *symname);
+void add_moddevtable(struct buffer *buf, struct module *mod);
+
+/* sumversion.c */
+void get_src_version(const char *modname, char sum[], unsigned sumlen);
+
+/* from modpost.c */
+char *read_text_file(const char *filename);
+char *get_line(char **stringp);
+void *sym_get_data(const struct elf_info *info, const Elf_Sym *sym);
+
+enum loglevel {
+ LOG_WARN,
+ LOG_ERROR,
+ LOG_FATAL
+};
+
+void modpost_log(enum loglevel loglevel, const char *fmt, ...);
+
+/*
+ * warn - show the given message, then let modpost continue running, still
+ * allowing modpost to exit successfully. This should be used when
+ * we still allow to generate vmlinux and modules.
+ *
+ * error - show the given message, then let modpost continue running, but fail
+ * in the end. This should be used when we should stop building vmlinux
+ * or modules, but we can continue running modpost to catch as many
+ * issues as possible.
+ *
+ * fatal - show the given message, and bail out immediately. This should be
+ * used when there is no point to continue running modpost.
+ */
+#define warn(fmt, args...) modpost_log(LOG_WARN, fmt, ##args)
+#define error(fmt, args...) modpost_log(LOG_ERROR, fmt, ##args)
+#define fatal(fmt, args...) modpost_log(LOG_FATAL, fmt, ##args)
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
new file mode 100644
index 0000000000..31066bfdba
--- /dev/null
+++ b/scripts/mod/sumversion.c
@@ -0,0 +1,410 @@
+#include <netinet/in.h>
+#ifdef __sun__
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <limits.h>
+#include "modpost.h"
+
+/*
+ * Stolen form Cryptographic API.
+ *
+ * MD4 Message Digest Algorithm (RFC1320).
+ *
+ * Implementation derived from Andrew Tridgell and Steve French's
+ * CIFS MD4 implementation, and the cryptoapi implementation
+ * originally based on the public domain implementation written
+ * by Colin Plumb in 1993.
+ *
+ * Copyright (c) Andrew Tridgell 1997-1998.
+ * Modified by Steve French (sfrench@us.ibm.com) 2002
+ * Copyright (c) Cryptoapi developers.
+ * Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#define MD4_DIGEST_SIZE 16
+#define MD4_HMAC_BLOCK_SIZE 64
+#define MD4_BLOCK_WORDS 16
+#define MD4_HASH_WORDS 4
+
+struct md4_ctx {
+ uint32_t hash[MD4_HASH_WORDS];
+ uint32_t block[MD4_BLOCK_WORDS];
+ uint64_t byte_count;
+};
+
+static inline uint32_t lshift(uint32_t x, unsigned int s)
+{
+ x &= 0xFFFFFFFF;
+ return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
+}
+
+static inline uint32_t F(uint32_t x, uint32_t y, uint32_t z)
+{
+ return (x & y) | ((~x) & z);
+}
+
+static inline uint32_t G(uint32_t x, uint32_t y, uint32_t z)
+{
+ return (x & y) | (x & z) | (y & z);
+}
+
+static inline uint32_t H(uint32_t x, uint32_t y, uint32_t z)
+{
+ return x ^ y ^ z;
+}
+
+#define ROUND1(a,b,c,d,k,s) (a = lshift(a + F(b,c,d) + k, s))
+#define ROUND2(a,b,c,d,k,s) (a = lshift(a + G(b,c,d) + k + (uint32_t)0x5A827999,s))
+#define ROUND3(a,b,c,d,k,s) (a = lshift(a + H(b,c,d) + k + (uint32_t)0x6ED9EBA1,s))
+
+/* XXX: this stuff can be optimized */
+static inline void le32_to_cpu_array(uint32_t *buf, unsigned int words)
+{
+ while (words--) {
+ *buf = ntohl(*buf);
+ buf++;
+ }
+}
+
+static inline void cpu_to_le32_array(uint32_t *buf, unsigned int words)
+{
+ while (words--) {
+ *buf = htonl(*buf);
+ buf++;
+ }
+}
+
+static void md4_transform(uint32_t *hash, uint32_t const *in)
+{
+ uint32_t a, b, c, d;
+
+ a = hash[0];
+ b = hash[1];
+ c = hash[2];
+ d = hash[3];
+
+ ROUND1(a, b, c, d, in[0], 3);
+ ROUND1(d, a, b, c, in[1], 7);
+ ROUND1(c, d, a, b, in[2], 11);
+ ROUND1(b, c, d, a, in[3], 19);
+ ROUND1(a, b, c, d, in[4], 3);
+ ROUND1(d, a, b, c, in[5], 7);
+ ROUND1(c, d, a, b, in[6], 11);
+ ROUND1(b, c, d, a, in[7], 19);
+ ROUND1(a, b, c, d, in[8], 3);
+ ROUND1(d, a, b, c, in[9], 7);
+ ROUND1(c, d, a, b, in[10], 11);
+ ROUND1(b, c, d, a, in[11], 19);
+ ROUND1(a, b, c, d, in[12], 3);
+ ROUND1(d, a, b, c, in[13], 7);
+ ROUND1(c, d, a, b, in[14], 11);
+ ROUND1(b, c, d, a, in[15], 19);
+
+ ROUND2(a, b, c, d,in[ 0], 3);
+ ROUND2(d, a, b, c, in[4], 5);
+ ROUND2(c, d, a, b, in[8], 9);
+ ROUND2(b, c, d, a, in[12], 13);
+ ROUND2(a, b, c, d, in[1], 3);
+ ROUND2(d, a, b, c, in[5], 5);
+ ROUND2(c, d, a, b, in[9], 9);
+ ROUND2(b, c, d, a, in[13], 13);
+ ROUND2(a, b, c, d, in[2], 3);
+ ROUND2(d, a, b, c, in[6], 5);
+ ROUND2(c, d, a, b, in[10], 9);
+ ROUND2(b, c, d, a, in[14], 13);
+ ROUND2(a, b, c, d, in[3], 3);
+ ROUND2(d, a, b, c, in[7], 5);
+ ROUND2(c, d, a, b, in[11], 9);
+ ROUND2(b, c, d, a, in[15], 13);
+
+ ROUND3(a, b, c, d,in[ 0], 3);
+ ROUND3(d, a, b, c, in[8], 9);
+ ROUND3(c, d, a, b, in[4], 11);
+ ROUND3(b, c, d, a, in[12], 15);
+ ROUND3(a, b, c, d, in[2], 3);
+ ROUND3(d, a, b, c, in[10], 9);
+ ROUND3(c, d, a, b, in[6], 11);
+ ROUND3(b, c, d, a, in[14], 15);
+ ROUND3(a, b, c, d, in[1], 3);
+ ROUND3(d, a, b, c, in[9], 9);
+ ROUND3(c, d, a, b, in[5], 11);
+ ROUND3(b, c, d, a, in[13], 15);
+ ROUND3(a, b, c, d, in[3], 3);
+ ROUND3(d, a, b, c, in[11], 9);
+ ROUND3(c, d, a, b, in[7], 11);
+ ROUND3(b, c, d, a, in[15], 15);
+
+ hash[0] += a;
+ hash[1] += b;
+ hash[2] += c;
+ hash[3] += d;
+}
+
+static inline void md4_transform_helper(struct md4_ctx *ctx)
+{
+ le32_to_cpu_array(ctx->block, ARRAY_SIZE(ctx->block));
+ md4_transform(ctx->hash, ctx->block);
+}
+
+static void md4_init(struct md4_ctx *mctx)
+{
+ mctx->hash[0] = 0x67452301;
+ mctx->hash[1] = 0xefcdab89;
+ mctx->hash[2] = 0x98badcfe;
+ mctx->hash[3] = 0x10325476;
+ mctx->byte_count = 0;
+}
+
+static void md4_update(struct md4_ctx *mctx,
+ const unsigned char *data, unsigned int len)
+{
+ const uint32_t avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
+
+ mctx->byte_count += len;
+
+ if (avail > len) {
+ memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+ data, len);
+ return;
+ }
+
+ memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+ data, avail);
+
+ md4_transform_helper(mctx);
+ data += avail;
+ len -= avail;
+
+ while (len >= sizeof(mctx->block)) {
+ memcpy(mctx->block, data, sizeof(mctx->block));
+ md4_transform_helper(mctx);
+ data += sizeof(mctx->block);
+ len -= sizeof(mctx->block);
+ }
+
+ memcpy(mctx->block, data, len);
+}
+
+static void md4_final_ascii(struct md4_ctx *mctx, char *out, unsigned int len)
+{
+ const unsigned int offset = mctx->byte_count & 0x3f;
+ char *p = (char *)mctx->block + offset;
+ int padding = 56 - (offset + 1);
+
+ *p++ = 0x80;
+ if (padding < 0) {
+ memset(p, 0x00, padding + sizeof (uint64_t));
+ md4_transform_helper(mctx);
+ p = (char *)mctx->block;
+ padding = 56;
+ }
+
+ memset(p, 0, padding);
+ mctx->block[14] = mctx->byte_count << 3;
+ mctx->block[15] = mctx->byte_count >> 29;
+ le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
+ sizeof(uint64_t)) / sizeof(uint32_t));
+ md4_transform(mctx->hash, mctx->block);
+ cpu_to_le32_array(mctx->hash, ARRAY_SIZE(mctx->hash));
+
+ snprintf(out, len, "%08X%08X%08X%08X",
+ mctx->hash[0], mctx->hash[1], mctx->hash[2], mctx->hash[3]);
+}
+
+static inline void add_char(unsigned char c, struct md4_ctx *md)
+{
+ md4_update(md, &c, 1);
+}
+
+static int parse_string(const char *file, unsigned long len,
+ struct md4_ctx *md)
+{
+ unsigned long i;
+
+ add_char(file[0], md);
+ for (i = 1; i < len; i++) {
+ add_char(file[i], md);
+ if (file[i] == '"' && file[i-1] != '\\')
+ break;
+ }
+ return i;
+}
+
+static int parse_comment(const char *file, unsigned long len)
+{
+ unsigned long i;
+
+ for (i = 2; i < len; i++) {
+ if (file[i-1] == '*' && file[i] == '/')
+ break;
+ }
+ return i;
+}
+
+/* FIXME: Handle .s files differently (eg. # starts comments) --RR */
+static int parse_file(const char *fname, struct md4_ctx *md)
+{
+ char *file;
+ unsigned long i, len;
+
+ file = read_text_file(fname);
+ len = strlen(file);
+
+ for (i = 0; i < len; i++) {
+ /* Collapse and ignore \ and CR. */
+ if (file[i] == '\\' && (i+1 < len) && file[i+1] == '\n') {
+ i++;
+ continue;
+ }
+
+ /* Ignore whitespace */
+ if (isspace(file[i]))
+ continue;
+
+ /* Handle strings as whole units */
+ if (file[i] == '"') {
+ i += parse_string(file+i, len - i, md);
+ continue;
+ }
+
+ /* Comments: ignore */
+ if (file[i] == '/' && file[i+1] == '*') {
+ i += parse_comment(file+i, len - i);
+ continue;
+ }
+
+ add_char(file[i], md);
+ }
+ free(file);
+ return 1;
+}
+/* Check whether the file is a static library or not */
+static bool is_static_library(const char *objfile)
+{
+ int len = strlen(objfile);
+
+ return objfile[len - 2] == '.' && objfile[len - 1] == 'a';
+}
+
+/* We have dir/file.o. Open dir/.file.o.cmd, look for source_ and deps_ line
+ * to figure out source files. */
+static int parse_source_files(const char *objfile, struct md4_ctx *md)
+{
+ char *cmd, *file, *line, *dir, *pos;
+ const char *base;
+ int dirlen, ret = 0, check_files = 0;
+
+ cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
+
+ base = strrchr(objfile, '/');
+ if (base) {
+ base++;
+ dirlen = base - objfile;
+ sprintf(cmd, "%.*s.%s.cmd", dirlen, objfile, base);
+ } else {
+ dirlen = 0;
+ sprintf(cmd, ".%s.cmd", objfile);
+ }
+ dir = NOFAIL(malloc(dirlen + 1));
+ strncpy(dir, objfile, dirlen);
+ dir[dirlen] = '\0';
+
+ file = read_text_file(cmd);
+
+ pos = file;
+
+ /* Sum all files in the same dir or subdirs. */
+ while ((line = get_line(&pos))) {
+ char* p = line;
+
+ if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
+ p = strrchr(line, ' ');
+ if (!p) {
+ warn("malformed line: %s\n", line);
+ goto out_file;
+ }
+ p++;
+ if (!parse_file(p, md)) {
+ warn("could not open %s: %s\n",
+ p, strerror(errno));
+ goto out_file;
+ }
+ continue;
+ }
+ if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) {
+ check_files = 1;
+ continue;
+ }
+ if (!check_files)
+ continue;
+
+ /* Continue until line does not end with '\' */
+ if ( *(p + strlen(p)-1) != '\\')
+ break;
+ /* Terminate line at first space, to get rid of final ' \' */
+ while (*p) {
+ if (isspace(*p)) {
+ *p = '\0';
+ break;
+ }
+ p++;
+ }
+
+ /* Check if this file is in same dir as objfile */
+ if ((strstr(line, dir)+strlen(dir)-1) == strrchr(line, '/')) {
+ if (!parse_file(line, md)) {
+ warn("could not open %s: %s\n",
+ line, strerror(errno));
+ goto out_file;
+ }
+
+ }
+
+ }
+
+ /* Everyone parsed OK */
+ ret = 1;
+out_file:
+ free(file);
+ free(dir);
+ free(cmd);
+ return ret;
+}
+
+/* Calc and record src checksum. */
+void get_src_version(const char *modname, char sum[], unsigned sumlen)
+{
+ char *buf;
+ struct md4_ctx md;
+ char *fname;
+ char filelist[PATH_MAX + 1];
+
+ /* objects for a module are listed in the first line of *.mod file. */
+ snprintf(filelist, sizeof(filelist), "%s.mod", modname);
+
+ buf = read_text_file(filelist);
+
+ md4_init(&md);
+ while ((fname = strsep(&buf, "\n"))) {
+ if (!*fname)
+ continue;
+ if (!(is_static_library(fname)) &&
+ !parse_source_files(fname, &md))
+ goto free;
+ }
+
+ md4_final_ascii(&md, sum, sumlen);
+free:
+ free(buf);
+}