diff options
Diffstat (limited to 'libblkid-tiny/swap.c')
| -rw-r--r-- | libblkid-tiny/swap.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libblkid-tiny/swap.c b/libblkid-tiny/swap.c deleted file mode 100644 index a598a7c..0000000 --- a/libblkid-tiny/swap.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 1999 by Andries Brouwer - * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o - * Copyright (C) 2001 by Andreas Dilger - * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org> - * Copyright (C) 2008 Karel Zak <kzak@redhat.com> - * - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - */ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <ctype.h> -#include <stdint.h> - -#include "superblocks.h" - -/* linux-2.6/include/linux/swap.h */ -struct swap_header_v1_2 { - /* char bootbits[1024]; */ /* Space for disklabel etc. */ - uint32_t version; - uint32_t lastpage; - uint32_t nr_badpages; - unsigned char uuid[16]; - unsigned char volume[16]; - uint32_t padding[117]; - uint32_t badpages[1]; -} __attribute__((packed)); - -#define PAGESIZE_MIN 0xff6 /* 4086 (arm, i386, ...) */ -#define PAGESIZE_MAX 0xfff6 /* 65526 (ia64) */ - -#define TOI_MAGIC_STRING "\xed\xc3\x02\xe9\x98\x56\xe5\x0c" -#define TOI_MAGIC_STRLEN (sizeof(TOI_MAGIC_STRING) - 1) - -static int swap_set_info(blkid_probe pr, const char *version) -{ - struct swap_header_v1_2 *hdr; - - /* Swap header always located at offset of 1024 bytes */ - hdr = (struct swap_header_v1_2 *) blkid_probe_get_buffer(pr, 1024, - sizeof(struct swap_header_v1_2)); - if (!hdr) - return -1; - - /* SWAPSPACE2 - check for wrong version or zeroed pagecount */ - if (strcmp(version, "2") == 0 && - ((hdr->version != 1 && swab32(hdr->version) != 1) || hdr->lastpage == 0)) - return -1; - - /* arbitrary sanity check.. is there any garbage down there? */ - if (hdr->padding[32] == 0 && hdr->padding[33] == 0) { - if (hdr->volume[0] && blkid_probe_set_label(pr, hdr->volume, - sizeof(hdr->volume)) < 0) - return -1; - if (blkid_probe_set_uuid(pr, hdr->uuid) < 0) - return -1; - } - - blkid_probe_set_version(pr, version); - return 0; -} - -static int probe_swap(blkid_probe pr, const struct blkid_idmag *mag) -{ - unsigned char *buf; - - if (!mag) - return -1; - - /* TuxOnIce keeps valid swap header at the end of the 1st page */ - buf = blkid_probe_get_buffer(pr, 0, TOI_MAGIC_STRLEN); - if (!buf) - return -1; - - if (memcmp(buf, TOI_MAGIC_STRING, TOI_MAGIC_STRLEN) == 0) - return 1; /* Ignore swap signature, it's TuxOnIce */ - - if (!memcmp(mag->magic, "SWAP-SPACE", mag->len)) { - /* swap v0 doesn't support LABEL or UUID */ - blkid_probe_set_version(pr, "1"); - return 0; - - } else if (!memcmp(mag->magic, "SWAPSPACE2", mag->len)) - return swap_set_info(pr, "2"); - - return -1; -} - -static int probe_swsuspend(blkid_probe pr, const struct blkid_idmag *mag) -{ - if (!mag) - return -1; - if (!memcmp(mag->magic, "S1SUSPEND", mag->len)) - return swap_set_info(pr, "s1suspend"); - if (!memcmp(mag->magic, "S2SUSPEND", mag->len)) - return swap_set_info(pr, "s2suspend"); - if (!memcmp(mag->magic, "ULSUSPEND", mag->len)) - return swap_set_info(pr, "ulsuspend"); - if (!memcmp(mag->magic, TOI_MAGIC_STRING, mag->len)) - return swap_set_info(pr, "tuxonice"); - if (!memcmp(mag->magic, "LINHIB0001", mag->len)) - return swap_set_info(pr, "linhib0001"); - - return -1; /* no signature detected */ -} - -const struct blkid_idinfo swap_idinfo = -{ - .name = "swap", - .usage = BLKID_USAGE_OTHER, - .probefunc = probe_swap, - .minsz = 10 * 4096, /* 10 pages */ - .magics = - { - { "SWAP-SPACE", 10, 0, 0xff6 }, - { "SWAPSPACE2", 10, 0, 0xff6 }, - { "SWAP-SPACE", 10, 0, 0x1ff6 }, - { "SWAPSPACE2", 10, 0, 0x1ff6 }, - { "SWAP-SPACE", 10, 0, 0x3ff6 }, - { "SWAPSPACE2", 10, 0, 0x3ff6 }, - { "SWAP-SPACE", 10, 0, 0x7ff6 }, - { "SWAPSPACE2", 10, 0, 0x7ff6 }, - { "SWAP-SPACE", 10, 0, 0xfff6 }, - { "SWAPSPACE2", 10, 0, 0xfff6 }, - { NULL } - } -}; - - -const struct blkid_idinfo swsuspend_idinfo = -{ - .name = "swsuspend", - .usage = BLKID_USAGE_OTHER, - .probefunc = probe_swsuspend, - .minsz = 10 * 4096, /* 10 pages */ - .magics = - { - { TOI_MAGIC_STRING, TOI_MAGIC_STRLEN, 0, 0 }, - { "S1SUSPEND", 9, 0, 0xff6 }, - { "S2SUSPEND", 9, 0, 0xff6 }, - { "ULSUSPEND", 9, 0, 0xff6 }, - { "LINHIB0001",10,0, 0xff6 }, - - { "S1SUSPEND", 9, 0, 0x1ff6 }, - { "S2SUSPEND", 9, 0, 0x1ff6 }, - { "ULSUSPEND", 9, 0, 0x1ff6 }, - { "LINHIB0001",10,0, 0x1ff6 }, - - { "S1SUSPEND", 9, 0, 0x3ff6 }, - { "S2SUSPEND", 9, 0, 0x3ff6 }, - { "ULSUSPEND", 9, 0, 0x3ff6 }, - { "LINHIB0001",10,0, 0x3ff6 }, - - { "S1SUSPEND", 9, 0, 0x7ff6 }, - { "S2SUSPEND", 9, 0, 0x7ff6 }, - { "ULSUSPEND", 9, 0, 0x7ff6 }, - { "LINHIB0001",10,0, 0x7ff6 }, - - { "S1SUSPEND", 9, 0, 0xfff6 }, - { "S2SUSPEND", 9, 0, 0xfff6 }, - { "ULSUSPEND", 9, 0, 0xfff6 }, - { "LINHIB0001",10,0, 0xfff6 }, - - { NULL } - } -}; - |