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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/um/include/shared | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
25 files changed, 1283 insertions, 0 deletions
diff --git a/arch/um/include/shared/arch.h b/arch/um/include/shared/arch.h new file mode 100644 index 000000000..880ee42a3 --- /dev/null +++ b/arch/um/include/shared/arch.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __ARCH_H__ +#define __ARCH_H__ + +#include <sysdep/ptrace.h> + +extern void arch_check_bugs(void); +extern int arch_fixup(unsigned long address, struct uml_pt_regs *regs); +extern void arch_examine_signal(int sig, struct uml_pt_regs *regs); + +#endif diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h new file mode 100644 index 000000000..9a0bd648d --- /dev/null +++ b/arch/um/include/shared/as-layout.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __START_H__ +#define __START_H__ + +#include <generated/asm-offsets.h> + +/* + * Stolen from linux/const.h, which can't be directly included since + * this is used in userspace code, which has no access to the kernel + * headers. Changed to be suitable for adding casts to the start, + * rather than "UL" to the end. + */ + +/* Some constant macros are used in both assembler and + * C code. Therefore we cannot annotate them always with + * 'UL' and other type specifiers unilaterally. We + * use the following macros to deal with this. + */ +#define STUB_START stub_start +#define STUB_CODE STUB_START +#define STUB_DATA (STUB_CODE + UM_KERN_PAGE_SIZE) +#define STUB_END (STUB_DATA + UM_KERN_PAGE_SIZE) + +#ifndef __ASSEMBLY__ + +#include <sysdep/ptrace.h> + +struct cpu_task { + int pid; + void *task; +}; + +extern struct cpu_task cpu_tasks[]; + +extern unsigned long high_physmem; +extern unsigned long uml_physmem; +extern unsigned long uml_reserved; +extern unsigned long end_vm; +extern unsigned long start_vm; +extern unsigned long long highmem; + +extern unsigned long brk_start; + +extern unsigned long host_task_size; +extern unsigned long stub_start; + +extern int linux_main(int argc, char **argv); +extern void uml_finishsetup(void); + +struct siginfo; +extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *); + +#endif + +#endif diff --git a/arch/um/include/shared/common-offsets.h b/arch/um/include/shared/common-offsets.h new file mode 100644 index 000000000..96195483f --- /dev/null +++ b/arch/um/include/shared/common-offsets.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* for use by sys-$SUBARCH/kernel-offsets.c */ +#include <stub-data.h> + +DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE); + +DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE); +DEFINE(UM_KERN_PAGE_MASK, PAGE_MASK); +DEFINE(UM_KERN_PAGE_SHIFT, PAGE_SHIFT); +DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); + +DEFINE(UM_GFP_KERNEL, GFP_KERNEL); +DEFINE(UM_GFP_ATOMIC, GFP_ATOMIC); + +DEFINE(UM_THREAD_SIZE, THREAD_SIZE); + +DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); +DEFINE(UM_NSEC_PER_USEC, NSEC_PER_USEC); + +#ifdef CONFIG_PRINTK +DEFINE(UML_CONFIG_PRINTK, CONFIG_PRINTK); +#endif +#ifdef CONFIG_UML_X86 +DEFINE(UML_CONFIG_UML_X86, CONFIG_UML_X86); +#endif +#ifdef CONFIG_64BIT +DEFINE(UML_CONFIG_64BIT, CONFIG_64BIT); +#endif +#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT +DEFINE(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT, CONFIG_UML_TIME_TRAVEL_SUPPORT); +#endif + +/* for stub */ +DEFINE(UML_STUB_FIELD_OFFSET, offsetof(struct stub_data, offset)); +DEFINE(UML_STUB_FIELD_CHILD_ERR, offsetof(struct stub_data, child_err)); +DEFINE(UML_STUB_FIELD_FD, offsetof(struct stub_data, fd)); diff --git a/arch/um/include/shared/elf_user.h b/arch/um/include/shared/elf_user.h new file mode 100644 index 000000000..fd461ee40 --- /dev/null +++ b/arch/um/include/shared/elf_user.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + */ + +#ifndef __ELF_USER_H__ +#define __ELF_USER_H__ + +/* For compilation on a host that doesn't support AT_SYSINFO (Linux 2.4) */ + +#ifndef AT_SYSINFO +#define AT_SYSINFO 32 +#endif +#ifndef AT_SYSINFO_EHDR +#define AT_SYSINFO_EHDR 33 +#endif + +#endif diff --git a/arch/um/include/shared/frame_kern.h b/arch/um/include/shared/frame_kern.h new file mode 100644 index 000000000..ed952ac66 --- /dev/null +++ b/arch/um/include/shared/frame_kern.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __FRAME_KERN_H_ +#define __FRAME_KERN_H_ + +extern int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); +extern int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); + +#endif + diff --git a/arch/um/include/shared/init.h b/arch/um/include/shared/init.h new file mode 100644 index 000000000..1a659e2e8 --- /dev/null +++ b/arch/um/include/shared/init.h @@ -0,0 +1,127 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_UML_INIT_H +#define _LINUX_UML_INIT_H + +/* These macros are used to mark some functions or + * initialized data (doesn't apply to uninitialized data) + * as `initialization' functions. The kernel can take this + * as hint that the function is used only during the initialization + * phase and free up used memory resources after + * + * Usage: + * For functions: + * + * You should add __init immediately before the function name, like: + * + * static void __init initme(int x, int y) + * { + * extern int z; z = x * y; + * } + * + * If the function has a prototype somewhere, you can also add + * __init between closing brace of the prototype and semicolon: + * + * extern int initialize_foobar_device(int, int, int) __init; + * + * For initialized data: + * You should insert __initdata between the variable name and equal + * sign followed by value, e.g.: + * + * static int init_variable __initdata = 0; + * static const char linux_logo[] __initconst = { 0x32, 0x36, ... }; + * + * Don't forget to initialize data not at file scope, i.e. within a function, + * as gcc otherwise puts the data into the bss section and not into the init + * section. + * + * Also note, that this data cannot be "const". + */ + +#ifndef _LINUX_INIT_H +typedef int (*initcall_t)(void); +typedef void (*exitcall_t)(void); + +#include <linux/compiler_types.h> + +/* These are for everybody (although not all archs will actually + discard it in modules) */ +#define __init __section(".init.text") +#define __initdata __section(".init.data") +#define __exitdata __section(".exit.data") +#define __exit_call __used __section(".exitcall.exit") + +#ifdef MODULE +#define __exit __section(".exit.text") +#else +#define __exit __used __section(".exit.text") +#endif + +#endif + +#ifndef MODULE +struct uml_param { + const char *str; + int (*setup_func)(char *, int *); +}; + +extern initcall_t __uml_postsetup_start, __uml_postsetup_end; +extern const char *__uml_help_start, *__uml_help_end; +#endif + +#define __uml_exitcall(fn) \ + static exitcall_t __uml_exitcall_##fn __uml_exit_call = fn + +extern struct uml_param __uml_setup_start, __uml_setup_end; + +#define __uml_postsetup(fn) \ + static initcall_t __uml_postsetup_##fn __uml_postsetup_call = fn + +#define __non_empty_string(dummyname,string) \ + struct __uml_non_empty_string_struct_##dummyname \ + { \ + char _string[sizeof(string)-2]; \ + } + +#ifndef MODULE +#define __uml_setup(str, fn, help...) \ + __non_empty_string(fn ##_setup, str); \ + __uml_help(fn, help); \ + static char __uml_setup_str_##fn[] __initdata = str; \ + static struct uml_param __uml_setup_##fn __uml_init_setup = { __uml_setup_str_##fn, fn } +#else +#define __uml_setup(str, fn, help...) \ + +#endif + +#define __uml_help(fn, help...) \ + __non_empty_string(fn ##__help, help); \ + static char __uml_help_str_##fn[] __initdata = help; \ + static const char *__uml_help_##fn __uml_setup_help = __uml_help_str_##fn + +/* + * Mark functions and data as being only used at initialization + * or exit time. + */ +#define __uml_init_setup __used __section(".uml.setup.init") +#define __uml_setup_help __used __section(".uml.help.init") +#define __uml_postsetup_call __used __section(".uml.postsetup.init") +#define __uml_exit_call __used __section(".uml.exitcall.exit") + +#ifdef __UM_HOST__ + +#define __define_initcall(level,fn) \ + static initcall_t __initcall_##fn __used \ + __attribute__((__section__(".initcall" level ".init"))) = fn + +/* Userspace initcalls shouldn't depend on anything in the kernel, so we'll + * make them run first. + */ +#define __initcall(fn) __define_initcall("1", fn) + +#define __exitcall(fn) static exitcall_t __exitcall_##fn __exit_call = fn + +#define __init_call __used __section(".initcall.init") + +#endif + +#endif /* _LINUX_UML_INIT_H */ diff --git a/arch/um/include/shared/irq_kern.h b/arch/um/include/shared/irq_kern.h new file mode 100644 index 000000000..f2dc817ab --- /dev/null +++ b/arch/um/include/shared/irq_kern.h @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __IRQ_KERN_H__ +#define __IRQ_KERN_H__ + +#include <linux/interrupt.h> +#include <linux/time-internal.h> +#include <asm/ptrace.h> +#include "irq_user.h" + +#define UM_IRQ_ALLOC -1 + +int um_request_irq(int irq, int fd, enum um_irq_type type, + irq_handler_t handler, unsigned long irqflags, + const char *devname, void *dev_id); + +#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT +/** + * um_request_irq_tt - request an IRQ with timetravel handler + * + * @irq: the IRQ number, or %UM_IRQ_ALLOC + * @fd: The file descriptor to request an IRQ for + * @type: read or write + * @handler: the (generic style) IRQ handler + * @irqflags: Linux IRQ flags + * @devname: name for this to show + * @dev_id: data pointer to pass to the IRQ handler + * @timetravel_handler: the timetravel interrupt handler, invoked with the IRQ + * number, fd, dev_id and time-travel event pointer. + * + * Returns: The interrupt number assigned or a negative error. + * + * Note that the timetravel handler is invoked only if the time_travel_mode is + * %TT_MODE_EXTERNAL, and then it is invoked even while the system is suspended! + * This function must call time_travel_add_irq_event() for the event passed with + * an appropriate delay, before sending an ACK on the socket it was invoked for. + * + * If this was called while the system is suspended, then adding the event will + * cause the system to resume. + * + * Since this function will almost certainly have to handle the FD's condition, + * a read will consume the message, and after that it is up to the code using + * it to pass such a message to the @handler in whichever way it can. + * + * If time_travel_mode is not %TT_MODE_EXTERNAL the @timetravel_handler will + * not be invoked at all and the @handler must handle the FD becoming + * readable (or writable) instead. Use um_irq_timetravel_handler_used() to + * distinguish these cases. + * + * See virtio_uml.c for an example. + */ +int um_request_irq_tt(int irq, int fd, enum um_irq_type type, + irq_handler_t handler, unsigned long irqflags, + const char *devname, void *dev_id, + void (*timetravel_handler)(int, int, void *, + struct time_travel_event *)); +#else +static inline +int um_request_irq_tt(int irq, int fd, enum um_irq_type type, + irq_handler_t handler, unsigned long irqflags, + const char *devname, void *dev_id, + void (*timetravel_handler)(int, int, void *, + struct time_travel_event *)) +{ + return um_request_irq(irq, fd, type, handler, irqflags, + devname, dev_id); +} +#endif + +static inline bool um_irq_timetravel_handler_used(void) +{ + return time_travel_mode == TT_MODE_EXTERNAL; +} + +void um_free_irq(int irq, void *dev_id); +#endif diff --git a/arch/um/include/shared/irq_user.h b/arch/um/include/shared/irq_user.h new file mode 100644 index 000000000..da0f6eea3 --- /dev/null +++ b/arch/um/include/shared/irq_user.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __IRQ_USER_H__ +#define __IRQ_USER_H__ + +#include <sysdep/ptrace.h> + +enum um_irq_type { + IRQ_READ, + IRQ_WRITE, + NUM_IRQ_TYPES, +}; + +struct siginfo; +extern void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); +void sigio_run_timetravel_handlers(void); +extern void free_irq_by_fd(int fd); +extern void deactivate_fd(int fd, int irqnum); +extern int deactivate_all_fds(void); + +#endif diff --git a/arch/um/include/shared/kern.h b/arch/um/include/shared/kern.h new file mode 100644 index 000000000..3a9c75a84 --- /dev/null +++ b/arch/um/include/shared/kern.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __KERN_H__ +#define __KERN_H__ + +/* These are all user-mode things which are convenient to call directly + * from kernel code and for which writing a wrapper is too much of a pain. + * The regular include files can't be included because this file is included + * only into kernel code, and user-space includes conflict with kernel + * includes. + */ + +extern int printf(const char *fmt, ...); +extern void *sbrk(int increment); +extern int pause(void); +extern void exit(int); + +#endif + diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h new file mode 100644 index 000000000..d8b8b4f07 --- /dev/null +++ b/arch/um/include/shared/kern_util.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __KERN_UTIL_H__ +#define __KERN_UTIL_H__ + +#include <sysdep/ptrace.h> +#include <sysdep/faultinfo.h> + +struct siginfo; + +extern int uml_exitcode; + +extern int ncpus; +extern int kmalloc_ok; + +#define UML_ROUND_UP(addr) \ + ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK) + +extern unsigned long alloc_stack(int order, int atomic); +extern void free_stack(unsigned long stack, int order); + +struct pt_regs; +extern void do_signal(struct pt_regs *regs); +extern void interrupt_end(void); +extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs); + +extern unsigned long segv(struct faultinfo fi, unsigned long ip, + int is_user, struct uml_pt_regs *regs); +extern int handle_page_fault(unsigned long address, unsigned long ip, + int is_write, int is_user, int *code_out); + +extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); +extern void initial_thread_cb(void (*proc)(void *), void *arg); +extern int is_syscall(unsigned long addr); + +extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); + +extern void uml_pm_wake(void); + +extern int start_uml(void); +extern void paging_init(void); + +extern void uml_cleanup(void); +extern void do_uml_exitcalls(void); + +/* + * Are we disallowed to sleep? Used to choose between GFP_KERNEL and + * GFP_ATOMIC. + */ +extern int __cant_sleep(void); +extern int get_current_pid(void); +extern int copy_from_user_proc(void *to, void *from, int size); +extern char *uml_strdup(const char *string); + +extern unsigned long to_irq_stack(unsigned long *mask_out); +extern unsigned long from_irq_stack(int nested); + +extern int singlestepping(void *t); + +extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); +extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs); +extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); +extern void fatal_sigsegv(void) __attribute__ ((noreturn)); + +void um_idle_sleep(void); + +#endif diff --git a/arch/um/include/shared/longjmp.h b/arch/um/include/shared/longjmp.h new file mode 100644 index 000000000..886331903 --- /dev/null +++ b/arch/um/include/shared/longjmp.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UML_LONGJMP_H +#define __UML_LONGJMP_H + +#include <sysdep/archsetjmp.h> +#include <os.h> + +extern int signals_enabled; +extern int setjmp(jmp_buf); +extern void longjmp(jmp_buf, int); + +#define UML_LONGJMP(buf, val) do { \ + longjmp(*buf, val); \ +} while(0) + +#define UML_SETJMP(buf) ({ \ + int n, enable; \ + enable = *(volatile int *)&signals_enabled; \ + n = setjmp(*buf); \ + if(n != 0) \ + um_set_signals_trace(enable); \ + n; }) + +#endif diff --git a/arch/um/include/shared/mem.h b/arch/um/include/shared/mem.h new file mode 100644 index 000000000..98aacd544 --- /dev/null +++ b/arch/um/include/shared/mem.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __MEM_H__ +#define __MEM_H__ + +extern int phys_mapping(unsigned long phys, unsigned long long *offset_out); + +extern unsigned long uml_physmem; +static inline unsigned long uml_to_phys(void *virt) +{ + return(((unsigned long) virt) - uml_physmem); +} + +static inline void *uml_to_virt(unsigned long phys) +{ + return((void *) uml_physmem + phys); +} + +#endif diff --git a/arch/um/include/shared/mem_user.h b/arch/um/include/shared/mem_user.h new file mode 100644 index 000000000..11a723a58 --- /dev/null +++ b/arch/um/include/shared/mem_user.h @@ -0,0 +1,57 @@ +/* + * arch/um/include/mem_user.h + * + * BRIEF MODULE DESCRIPTION + * user side memory interface for support IO memory inside user mode linux + * + * Copyright (C) 2001 RidgeRun, Inc. + * Author: RidgeRun, Inc. + * Greg Lonnon glonnon@ridgerun.com or info@ridgerun.com + * + * 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. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _MEM_USER_H +#define _MEM_USER_H + +struct iomem_region { + struct iomem_region *next; + char *driver; + int fd; + int size; + unsigned long phys; + unsigned long virt; +}; + +extern struct iomem_region *iomem_regions; +extern int iomem_size; + +#define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1)) + +extern unsigned long find_iomem(char *driver, unsigned long *len_out); +extern void mem_total_pages(unsigned long physmem, unsigned long iomem, + unsigned long highmem); +extern void setup_physmem(unsigned long start, unsigned long usable, + unsigned long len, unsigned long long highmem); +extern void map_memory(unsigned long virt, unsigned long phys, + unsigned long len, int r, int w, int x); + +#endif diff --git a/arch/um/include/shared/net_kern.h b/arch/um/include/shared/net_kern.h new file mode 100644 index 000000000..67b2e9a1f --- /dev/null +++ b/arch/um/include/shared/net_kern.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __UM_NET_KERN_H +#define __UM_NET_KERN_H + +#include <linux/netdevice.h> +#include <linux/platform_device.h> +#include <linux/skbuff.h> +#include <linux/socket.h> +#include <linux/list.h> +#include <linux/workqueue.h> + +struct uml_net { + struct list_head list; + struct net_device *dev; + struct platform_device pdev; + int index; +}; + +struct uml_net_private { + struct list_head list; + spinlock_t lock; + struct net_device *dev; + struct timer_list tl; + + struct work_struct work; + int fd; + unsigned char mac[ETH_ALEN]; + int max_packet; + unsigned short (*protocol)(struct sk_buff *); + int (*open)(void *); + void (*close)(int, void *); + void (*remove)(void *); + int (*read)(int, struct sk_buff *skb, struct uml_net_private *); + int (*write)(int, struct sk_buff *skb, struct uml_net_private *); + + void (*add_address)(unsigned char *, unsigned char *, void *); + void (*delete_address)(unsigned char *, unsigned char *, void *); + char user[]; +}; + +struct net_kern_info { + void (*init)(struct net_device *, void *); + unsigned short (*protocol)(struct sk_buff *); + int (*read)(int, struct sk_buff *skb, struct uml_net_private *); + int (*write)(int, struct sk_buff *skb, struct uml_net_private *); +}; + +struct transport { + struct list_head list; + const char *name; + int (* const setup)(char *, char **, void *); + const struct net_user_info *user; + const struct net_kern_info *kern; + const int private_size; + const int setup_size; +}; + +extern int tap_setup_common(char *str, char *type, char **dev_name, + char **mac_out, char **gate_addr); +extern void register_transport(struct transport *new); +extern unsigned short eth_protocol(struct sk_buff *skb); +extern void uml_net_setup_etheraddr(struct net_device *dev, char *str); + + +#endif diff --git a/arch/um/include/shared/net_user.h b/arch/um/include/shared/net_user.h new file mode 100644 index 000000000..ba92a4d93 --- /dev/null +++ b/arch/um/include/shared/net_user.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __UM_NET_USER_H__ +#define __UM_NET_USER_H__ + +#define ETH_ADDR_LEN (6) +#define ETH_HEADER_ETHERTAP (16) +#define ETH_HEADER_OTHER (26) /* 14 for ethernet + VLAN + MPLS for crazy people */ +#define ETH_MAX_PACKET (1500) + +#define UML_NET_VERSION (4) + +struct net_user_info { + int (*init)(void *, void *); + int (*open)(void *); + void (*close)(int, void *); + void (*remove)(void *); + void (*add_address)(unsigned char *, unsigned char *, void *); + void (*delete_address)(unsigned char *, unsigned char *, void *); + int max_packet; + int mtu; +}; + +extern void iter_addresses(void *d, void (*cb)(unsigned char *, + unsigned char *, void *), + void *arg); + +extern void *get_output_buffer(int *len_out); +extern void free_output_buffer(void *buffer); + +extern int tap_open_common(void *dev, char *gate_addr); +extern void tap_check_ips(char *gate_addr, unsigned char *eth_addr); + +extern void read_output(int fd, char *output_out, int len); + +extern int net_read(int fd, void *buf, int len); +extern int net_recvfrom(int fd, void *buf, int len); +extern int net_write(int fd, void *buf, int len); +extern int net_send(int fd, void *buf, int len); +extern int net_sendto(int fd, void *buf, int len, void *to, int sock_len); + +extern void open_addr(unsigned char *addr, unsigned char *netmask, void *arg); +extern void close_addr(unsigned char *addr, unsigned char *netmask, void *arg); + +extern char *split_if_spec(char *str, ...); + +extern int dev_netmask(void *d, void *m); + +#endif diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h new file mode 100644 index 000000000..0df646c66 --- /dev/null +++ b/arch/um/include/shared/os.h @@ -0,0 +1,346 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2015 Anton Ivanov (aivanov@{brocade.com,kot-begemot.co.uk}) + * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __OS_H__ +#define __OS_H__ + +#include <irq_user.h> +#include <longjmp.h> +#include <mm_id.h> +/* This is to get size_t */ +#ifndef __UM_HOST__ +#include <linux/types.h> +#else +#include <sys/types.h> +#endif + +#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR)) + +#define OS_TYPE_FILE 1 +#define OS_TYPE_DIR 2 +#define OS_TYPE_SYMLINK 3 +#define OS_TYPE_CHARDEV 4 +#define OS_TYPE_BLOCKDEV 5 +#define OS_TYPE_FIFO 6 +#define OS_TYPE_SOCK 7 + +/* os_access() flags */ +#define OS_ACC_F_OK 0 /* Test for existence. */ +#define OS_ACC_X_OK 1 /* Test for execute permission. */ +#define OS_ACC_W_OK 2 /* Test for write permission. */ +#define OS_ACC_R_OK 4 /* Test for read permission. */ +#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ + +#ifdef CONFIG_64BIT +#define OS_LIB_PATH "/usr/lib64/" +#else +#define OS_LIB_PATH "/usr/lib/" +#endif + +#define OS_SENDMSG_MAX_FDS 8 + +/* + * types taken from stat_file() in hostfs_user.c + * (if they are wrong here, they are wrong there...). + */ +struct uml_stat { + int ust_dev; /* device */ + unsigned long long ust_ino; /* inode */ + int ust_mode; /* protection */ + int ust_nlink; /* number of hard links */ + int ust_uid; /* user ID of owner */ + int ust_gid; /* group ID of owner */ + unsigned long long ust_size; /* total size, in bytes */ + int ust_blksize; /* blocksize for filesystem I/O */ + unsigned long long ust_blocks; /* number of blocks allocated */ + unsigned long ust_atime; /* time of last access */ + unsigned long ust_mtime; /* time of last modification */ + unsigned long ust_ctime; /* time of last change */ +}; + +struct openflags { + unsigned int r : 1; + unsigned int w : 1; + unsigned int s : 1; /* O_SYNC */ + unsigned int c : 1; /* O_CREAT */ + unsigned int t : 1; /* O_TRUNC */ + unsigned int a : 1; /* O_APPEND */ + unsigned int e : 1; /* O_EXCL */ + unsigned int cl : 1; /* FD_CLOEXEC */ +}; + +#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \ + .t = 0, .a = 0, .e = 0, .cl = 0 }) + +static inline struct openflags of_read(struct openflags flags) +{ + flags.r = 1; + return flags; +} + +static inline struct openflags of_write(struct openflags flags) +{ + flags.w = 1; + return flags; +} + +static inline struct openflags of_rdwr(struct openflags flags) +{ + return of_read(of_write(flags)); +} + +static inline struct openflags of_set_rw(struct openflags flags, int r, int w) +{ + flags.r = r; + flags.w = w; + return flags; +} + +static inline struct openflags of_sync(struct openflags flags) +{ + flags.s = 1; + return flags; +} + +static inline struct openflags of_create(struct openflags flags) +{ + flags.c = 1; + return flags; +} + +static inline struct openflags of_trunc(struct openflags flags) +{ + flags.t = 1; + return flags; +} + +static inline struct openflags of_append(struct openflags flags) +{ + flags.a = 1; + return flags; +} + +static inline struct openflags of_excl(struct openflags flags) +{ + flags.e = 1; + return flags; +} + +static inline struct openflags of_cloexec(struct openflags flags) +{ + flags.cl = 1; + return flags; +} + +/* file.c */ +extern int os_stat_file(const char *file_name, struct uml_stat *buf); +extern int os_stat_fd(const int fd, struct uml_stat *buf); +extern int os_access(const char *file, int mode); +extern int os_set_exec_close(int fd); +extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); +extern int os_get_ifname(int fd, char *namebuf); +extern int os_set_slip(int fd); +extern int os_mode_fd(int fd, int mode); +extern int os_fsync_file(int fd); + +extern int os_seek_file(int fd, unsigned long long offset); +extern int os_open_file(const char *file, struct openflags flags, int mode); +extern int os_read_file(int fd, void *buf, int len); +extern int os_write_file(int fd, const void *buf, int count); +extern int os_sync_file(int fd); +extern int os_file_size(const char *file, unsigned long long *size_out); +extern int os_pread_file(int fd, void *buf, int len, unsigned long long offset); +extern int os_pwrite_file(int fd, const void *buf, int count, unsigned long long offset); +extern int os_file_modtime(const char *file, long long *modtime); +extern int os_pipe(int *fd, int stream, int close_on_exec); +extern int os_set_fd_async(int fd); +extern int os_clear_fd_async(int fd); +extern int os_set_fd_block(int fd, int blocking); +extern int os_accept_connection(int fd); +extern int os_create_unix_socket(const char *file, int len, int close_on_exec); +extern int os_shutdown_socket(int fd, int r, int w); +extern void os_close_file(int fd); +extern int os_rcv_fd(int fd, int *helper_pid_out); +extern int os_connect_socket(const char *name); +extern int os_file_type(char *file); +extern int os_file_mode(const char *file, struct openflags *mode_out); +extern int os_lock_file(int fd, int excl); +extern void os_flush_stdout(void); +extern unsigned os_major(unsigned long long dev); +extern unsigned os_minor(unsigned long long dev); +extern unsigned long long os_makedev(unsigned major, unsigned minor); +extern int os_falloc_punch(int fd, unsigned long long offset, int count); +extern int os_falloc_zeroes(int fd, unsigned long long offset, int count); +extern int os_eventfd(unsigned int initval, int flags); +extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len, + const int *fds, unsigned int fds_num); +int os_poll(unsigned int n, const int *fds); + +/* start_up.c */ +extern void os_early_checks(void); +extern void os_check_bugs(void); +extern void check_host_supports_tls(int *supports_tls, int *tls_min); +extern void get_host_cpu_features( + void (*flags_helper_func)(char *line), + void (*cache_helper_func)(char *line)); + +/* mem.c */ +extern int create_mem_file(unsigned long long len); + +/* process.c */ +extern unsigned long os_process_pc(int pid); +extern int os_process_parent(int pid); +extern void os_alarm_process(int pid); +extern void os_stop_process(int pid); +extern void os_kill_process(int pid, int reap_child); +extern void os_kill_ptraced_process(int pid, int reap_child); + +extern int os_getpid(void); +extern int os_getpgrp(void); + +extern void init_new_thread_signals(void); + +extern int os_map_memory(void *virt, int fd, unsigned long long off, + unsigned long len, int r, int w, int x); +extern int os_protect_memory(void *addr, unsigned long len, + int r, int w, int x); +extern int os_unmap_memory(void *addr, int len); +extern int os_drop_memory(void *addr, int length); +extern int can_drop_memory(void); +extern int os_mincore(void *addr, unsigned long len); + +/* execvp.c */ +extern int execvp_noalloc(char *buf, const char *file, char *const argv[]); +/* helper.c */ +extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv); +extern int run_helper_thread(int (*proc)(void *), void *arg, + unsigned int flags, unsigned long *stack_out); +extern int helper_wait(int pid); + + +/* umid.c */ +extern int umid_file_name(char *name, char *buf, int len); +extern int set_umid(char *name); +extern char *get_umid(void); + +/* signal.c */ +extern void timer_set_signal_handler(void); +extern void set_sigstack(void *sig_stack, int size); +extern void set_handler(int sig); +extern void send_sigio_to_self(void); +extern int change_sig(int signal, int on); +extern void block_signals(void); +extern void unblock_signals(void); +extern int um_set_signals(int enable); +extern int um_set_signals_trace(int enable); +extern int os_is_signal_stack(void); +extern void deliver_alarm(void); +extern void register_pm_wake_signal(void); +extern void block_signals_hard(void); +extern void unblock_signals_hard(void); +extern void mark_sigio_pending(void); + +/* util.c */ +extern void stack_protections(unsigned long address); +extern int raw(int fd); +extern void setup_machinename(char *machine_out); +extern void setup_hostinfo(char *buf, int len); +extern ssize_t os_getrandom(void *buf, size_t len, unsigned int flags); +extern void os_dump_core(void) __attribute__ ((noreturn)); +extern void um_early_printk(const char *s, unsigned int n); +extern void os_fix_helper_signals(void); +extern void os_info(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); +extern void os_warn(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); + +/* time.c */ +extern void os_idle_sleep(void); +extern int os_timer_create(void); +extern int os_timer_set_interval(unsigned long long nsecs); +extern int os_timer_one_shot(unsigned long long nsecs); +extern void os_timer_disable(void); +extern long long os_persistent_clock_emulation(void); +extern long long os_nsecs(void); + +/* skas/mem.c */ +extern long run_syscall_stub(struct mm_id * mm_idp, + int syscall, unsigned long *args, long expected, + void **addr, int done); +extern long syscall_stub_data(struct mm_id * mm_idp, + unsigned long *data, int data_count, + void **addr, void **stub_addr); +extern int map(struct mm_id * mm_idp, unsigned long virt, + unsigned long len, int prot, int phys_fd, + unsigned long long offset, int done, void **data); +extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len, + int done, void **data); +extern int protect(struct mm_id * mm_idp, unsigned long addr, + unsigned long len, unsigned int prot, int done, void **data); + +/* skas/process.c */ +extern int is_skas_winch(int pid, int fd, void *data); +extern int start_userspace(unsigned long stub_stack); +extern int copy_context_skas0(unsigned long stack, int pid); +extern void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs); +extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void)); +extern void switch_threads(jmp_buf *me, jmp_buf *you); +extern int start_idle_thread(void *stack, jmp_buf *switch_buf); +extern void initial_thread_cb_skas(void (*proc)(void *), + void *arg); +extern void halt_skas(void); +extern void reboot_skas(void); + +/* irq.c */ +extern int os_waiting_for_events_epoll(void); +extern void *os_epoll_get_data_pointer(int index); +extern int os_epoll_triggered(int index, int events); +extern int os_event_mask(enum um_irq_type irq_type); +extern int os_setup_epoll(void); +extern int os_add_epoll_fd(int events, int fd, void *data); +extern int os_mod_epoll_fd(int events, int fd, void *data); +extern int os_del_epoll_fd(int fd); +extern void os_set_ioignore(void); +extern void os_close_epoll_fd(void); +extern void um_irqs_suspend(void); +extern void um_irqs_resume(void); + +/* sigio.c */ +extern int add_sigio_fd(int fd); +extern int ignore_sigio_fd(int fd); +extern void maybe_sigio_broken(int fd); +extern void sigio_broken(int fd); +/* + * unlocked versions for IRQ controller code. + * + * This is safe because it's used at suspend/resume and nothing + * else is running. + */ +extern int __add_sigio_fd(int fd); +extern int __ignore_sigio_fd(int fd); + +/* prctl.c */ +extern int os_arch_prctl(int pid, int option, unsigned long *arg2); + +/* tty.c */ +extern int get_pty(void); + +/* sys-$ARCH/task_size.c */ +extern unsigned long os_get_top_address(void); + +long syscall(long number, ...); + +/* irqflags tracing */ +extern void block_signals_trace(void); +extern void unblock_signals_trace(void); +extern void um_trace_signals_on(void); +extern void um_trace_signals_off(void); + +/* time-travel */ +extern void deliver_time_travel_irqs(void); + +#endif diff --git a/arch/um/include/shared/ptrace_user.h b/arch/um/include/shared/ptrace_user.h new file mode 100644 index 000000000..95455e899 --- /dev/null +++ b/arch/um/include/shared/ptrace_user.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __PTRACE_USER_H__ +#define __PTRACE_USER_H__ + +#include <sys/ptrace.h> +#include <sysdep/ptrace_user.h> + +extern int ptrace_getregs(long pid, unsigned long *regs_out); +extern int ptrace_setregs(long pid, unsigned long *regs_in); + +/* syscall emulation path in ptrace */ + +#ifndef PTRACE_SYSEMU +#define PTRACE_SYSEMU 31 +#endif +#ifndef PTRACE_SYSEMU_SINGLESTEP +#define PTRACE_SYSEMU_SINGLESTEP 32 +#endif + +/* On architectures, that started to support PTRACE_O_TRACESYSGOOD + * in linux 2.4, there are two different definitions of + * PTRACE_SETOPTIONS: linux 2.4 uses 21 while linux 2.6 uses 0x4200. + * For binary compatibility, 2.6 also supports the old "21", named + * PTRACE_OLDSETOPTION. On these architectures, UML always must use + * "21", to ensure the kernel runs on 2.4 and 2.6 host without + * recompilation. So, we use PTRACE_OLDSETOPTIONS in UML. + * We also want to be able to build the kernel on 2.4, which doesn't + * have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare + * PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS. + * + * On architectures, that start to support PTRACE_O_TRACESYSGOOD on + * linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't + * supported by the host kernel. In that case, our trick lets us use + * the new 0x4200 with the name PTRACE_OLDSETOPTIONS. + */ +#ifndef PTRACE_OLDSETOPTIONS +#define PTRACE_OLDSETOPTIONS PTRACE_SETOPTIONS +#endif + +void set_using_sysemu(int value); +int get_using_sysemu(void); +extern int sysemu_supported; + +#define SELECT_PTRACE_OPERATION(sysemu_mode, singlestep_mode) \ + (((int[3][3] ) { \ + { PTRACE_SYSCALL, PTRACE_SYSCALL, PTRACE_SINGLESTEP }, \ + { PTRACE_SYSEMU, PTRACE_SYSEMU, PTRACE_SINGLESTEP }, \ + { PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, \ + PTRACE_SYSEMU_SINGLESTEP } }) \ + [sysemu_mode][singlestep_mode]) + +#endif diff --git a/arch/um/include/shared/registers.h b/arch/um/include/shared/registers.h new file mode 100644 index 000000000..2f9c3ce5b --- /dev/null +++ b/arch/um/include/shared/registers.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2004 PathScale, Inc + */ + +#ifndef __REGISTERS_H +#define __REGISTERS_H + +#include <sysdep/ptrace.h> + +extern int save_i387_registers(int pid, unsigned long *fp_regs); +extern int restore_i387_registers(int pid, unsigned long *fp_regs); +extern int save_fp_registers(int pid, unsigned long *fp_regs); +extern int restore_fp_registers(int pid, unsigned long *fp_regs); +extern int save_fpx_registers(int pid, unsigned long *fp_regs); +extern int restore_fpx_registers(int pid, unsigned long *fp_regs); +extern int save_registers(int pid, struct uml_pt_regs *regs); +extern int restore_pid_registers(int pid, struct uml_pt_regs *regs); +extern int init_pid_registers(int pid); +extern void get_safe_registers(unsigned long *regs, unsigned long *fp_regs); +extern int get_fp_registers(int pid, unsigned long *regs); +extern int put_fp_registers(int pid, unsigned long *regs); + +#endif diff --git a/arch/um/include/shared/sigio.h b/arch/um/include/shared/sigio.h new file mode 100644 index 000000000..e60c8b227 --- /dev/null +++ b/arch/um/include/shared/sigio.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __SIGIO_H__ +#define __SIGIO_H__ + +extern int write_sigio_irq(int fd); +extern void sigio_lock(void); +extern void sigio_unlock(void); + +#endif diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h new file mode 100644 index 000000000..e82e203f5 --- /dev/null +++ b/arch/um/include/shared/skas/mm_id.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __MM_ID_H +#define __MM_ID_H + +struct mm_id { + union { + int mm_fd; + int pid; + } u; + unsigned long stack; + int kill; +}; + +#endif diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h new file mode 100644 index 000000000..c93d2cbc8 --- /dev/null +++ b/arch/um/include/shared/skas/skas.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __SKAS_H +#define __SKAS_H + +#include <sysdep/ptrace.h> + +extern int userspace_pid[]; + +extern int user_thread(unsigned long stack, int flags); +extern void new_thread_handler(void); +extern void handle_syscall(struct uml_pt_regs *regs); +extern long execute_syscall_skas(void *r); +extern unsigned long current_stub_stack(void); + +#endif diff --git a/arch/um/include/shared/skas/stub-data.h b/arch/um/include/shared/skas/stub-data.h new file mode 100644 index 000000000..5e3ade3fb --- /dev/null +++ b/arch/um/include/shared/skas/stub-data.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + + * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) + * Copyright (C) 2005 Jeff Dike (jdike@karaya.com) + */ + +#ifndef __STUB_DATA_H +#define __STUB_DATA_H + +struct stub_data { + unsigned long offset; + int fd; + long parent_err, child_err; +}; + +#endif diff --git a/arch/um/include/shared/timetravel.h b/arch/um/include/shared/timetravel.h new file mode 100644 index 000000000..e5c3d69f1 --- /dev/null +++ b/arch/um/include/shared/timetravel.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019-2021 Intel Corporation + */ +#ifndef _UM_TIME_TRAVEL_H_ +#define _UM_TIME_TRAVEL_H_ + +enum time_travel_mode { + TT_MODE_OFF, + TT_MODE_BASIC, + TT_MODE_INFCPU, + TT_MODE_EXTERNAL, +}; + +#if defined(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT) || \ + defined(CONFIG_UML_TIME_TRAVEL_SUPPORT) +extern enum time_travel_mode time_travel_mode; +#else +#define time_travel_mode TT_MODE_OFF +#endif /* (UML_)CONFIG_UML_TIME_TRAVEL_SUPPORT */ + +#endif /* _UM_TIME_TRAVEL_H_ */ diff --git a/arch/um/include/shared/um_malloc.h b/arch/um/include/shared/um_malloc.h new file mode 100644 index 000000000..13da93284 --- /dev/null +++ b/arch/um/include/shared/um_malloc.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2005 Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> + */ + +#ifndef __UM_MALLOC_H__ +#define __UM_MALLOC_H__ + +#include <generated/asm-offsets.h> + +extern void *uml_kmalloc(int size, int flags); +extern void kfree(const void *ptr); + +extern void *vmalloc(unsigned long size); +extern void vfree(void *ptr); + +#endif /* __UM_MALLOC_H__ */ + + diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h new file mode 100644 index 000000000..bda66e5a9 --- /dev/null +++ b/arch/um/include/shared/user.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#ifndef __USER_H__ +#define __USER_H__ + +#include <generated/asm-offsets.h> + +/* + * The usual definition - copied here because the kernel provides its own, + * fancier, type-safe, definition. Using that one would require + * copying too much infrastructure for my taste, so userspace files + * get less checking than kernel files. + */ +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +/* This is to get size_t and NULL */ +#ifndef __UM_HOST__ +#include <linux/types.h> +#else +#include <stddef.h> +#include <sys/types.h> +#endif + +extern void panic(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); + +/* Requires preincluding include/linux/kern_levels.h */ +#define UM_KERN_EMERG KERN_EMERG +#define UM_KERN_ALERT KERN_ALERT +#define UM_KERN_CRIT KERN_CRIT +#define UM_KERN_ERR KERN_ERR +#define UM_KERN_WARNING KERN_WARNING +#define UM_KERN_NOTICE KERN_NOTICE +#define UM_KERN_INFO KERN_INFO +#define UM_KERN_DEBUG KERN_DEBUG +#define UM_KERN_CONT KERN_CONT + +#ifdef UML_CONFIG_PRINTK +#define printk(...) _printk(__VA_ARGS__) +extern int _printk(const char *fmt, ...) + __attribute__ ((format (printf, 1, 2))); +#else +static inline int printk(const char *fmt, ...) +{ + return 0; +} +#endif + +extern int in_aton(char *str); +extern size_t strlcpy(char *, const char *, size_t); +extern size_t strlcat(char *, const char *, size_t); + +/* Copied from linux/compiler-gcc.h since we can't include it directly */ +#define barrier() __asm__ __volatile__("": : :"memory") + +#endif |