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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
commitcfe5e3905201349e9cf3f95d52ff4bd100bde37d (patch)
treed0baf160cbee3195249d095f85e52d20c21acf02 /include/pt-sgi.h
parentInitial commit. (diff)
downloadutil-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.tar.xz
util-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.zip
Adding upstream version 2.39.3.upstream/2.39.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/pt-sgi.h')
-rw-r--r--include/pt-sgi.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/include/pt-sgi.h b/include/pt-sgi.h
new file mode 100644
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--- /dev/null
+++ b/include/pt-sgi.h
@@ -0,0 +1,119 @@
+/*
+ * No copyright is claimed. This code is in the public domain; do with
+ * it what you wish.
+ */
+#ifndef UTIL_LINUX_PT_SGI_H
+#define UTIL_LINUX_PT_SGI_H
+
+#include <stdint.h>
+
+#define SGI_LABEL_MAGIC 0x0be5a941
+
+#define SGI_MAXPARTITIONS 16
+#define SGI_MAXVOLUMES 15
+
+/* partition types */
+enum {
+ SGI_TYPE_VOLHDR = 0x00,
+ SGI_TYPE_TRKREPL = 0x01,
+ SGI_TYPE_SECREPL = 0x02,
+ SGI_TYPE_SWAP = 0x03,
+ SGI_TYPE_BSD = 0x04,
+ SGI_TYPE_SYSV = 0x05,
+ SGI_TYPE_ENTIRE_DISK = 0x06,
+ SGI_TYPE_EFS = 0x07,
+ SGI_TYPE_LVOL = 0x08,
+ SGI_TYPE_RLVOL = 0x09,
+ SGI_TYPE_XFS = 0x0a,
+ SGI_TYPE_XFSLOG = 0x0b,
+ SGI_TYPE_XLV = 0x0c,
+ SGI_TYPE_XVM = 0x0d
+};
+
+struct sgi_device_parameter {
+ unsigned char skew;
+ unsigned char gap1;
+ unsigned char gap2;
+ unsigned char sparecyl;
+
+ uint16_t pcylcount;
+ uint16_t head_vol0;
+ uint16_t ntrks; /* tracks in cyl 0 or vol 0 */
+
+ unsigned char cmd_tag_queue_depth;
+ unsigned char unused0;
+
+ uint16_t unused1;
+ uint16_t nsect; /* sectors/tracks in cyl 0 or vol 0 */
+ uint16_t bytes;
+ uint16_t ilfact;
+ uint32_t flags; /* SGI_DEVPARAM_* controller flags */
+ uint32_t datarate;
+ uint32_t retries_on_error;
+ uint32_t ms_per_word;
+ uint16_t xylogics_gap1;
+ uint16_t xylogics_syncdelay;
+ uint16_t xylogics_readdelay;
+ uint16_t xylogics_gap2;
+ uint16_t xylogics_readgate;
+ uint16_t xylogics_writecont;
+} __attribute__((packed));
+
+enum {
+ SGI_DEVPARAM_SECTOR_SLIP = 0x01,
+ SGI_DEVPARAM_SECTOR_FWD = 0x02,
+ SGI_DEVPARAM_TRACK_FWD = 0x04,
+ SGI_DEVPARAM_TRACK_MULTIVOL = 0x08,
+ SGI_DEVPARAM_IGNORE_ERRORS = 0x10,
+ SGI_DEVPARAM_RESEEK = 0x20,
+ SGI_DEVPARAM_CMDTAGQ_ENABLE = 0x40
+};
+
+
+struct sgi_disklabel {
+ uint32_t magic; /* magic number */
+ uint16_t root_part_num; /* # root partition */
+ uint16_t swap_part_num; /* # swap partition */
+ unsigned char boot_file[16]; /* name of boot file */
+
+ struct sgi_device_parameter devparam; /* not used now */
+
+ struct sgi_volume {
+ unsigned char name[8]; /* name of volume */
+ uint32_t block_num; /* logical block number */
+ uint32_t num_bytes; /* how big, in bytes */
+ } __attribute__((packed)) volume[SGI_MAXVOLUMES];
+
+ struct sgi_partition {
+ uint32_t num_blocks; /* size in logical blocks */
+ uint32_t first_block; /* first logical block */
+ uint32_t type; /* type of this partition */
+ } __attribute__((packed)) partitions[SGI_MAXPARTITIONS];
+
+ /* checksum is the 32bit 2's complement sum of the disklabel */
+ uint32_t csum; /* disk label checksum */
+ uint32_t padding; /* padding */
+} __attribute__((packed));
+
+static inline uint32_t sgi_pt_checksum(struct sgi_disklabel *label)
+{
+ int count;
+ uint32_t sum = 0;
+ unsigned char *ptr = (unsigned char *) label;
+
+ count = sizeof(*label) / sizeof(uint32_t);
+ ptr += sizeof(uint32_t) * (count - 1);
+
+ while (count--) {
+ uint32_t val;
+
+ memcpy(&val, ptr, sizeof(uint32_t));
+ sum -= be32_to_cpu(val);
+
+ ptr -= sizeof(uint32_t);
+ }
+
+ return sum;
+}
+
+#endif /* UTIL_LINUX_PT_SGI_H */