From 708cb3594139f28f7d99b4ea1cf91b4ccd032273 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sun, 20 Aug 2006 18:23:48 +0200 Subject: volume_id: add suspend partition detection Based on a patch from: Scott James Remnant --- extras/volume_id/lib/linux_swap.c | 38 ++++++++++++++++++++++++++------------ 1 file changed, 26 insertions(+), 12 deletions(-) (limited to 'extras/volume_id/lib/linux_swap.c') diff --git a/extras/volume_id/lib/linux_swap.c b/extras/volume_id/lib/linux_swap.c index 21cb2bce8c..8aca564d72 100644 --- a/extras/volume_id/lib/linux_swap.c +++ b/extras/volume_id/lib/linux_swap.c @@ -26,14 +26,14 @@ #include "libvolume_id.h" #include "util.h" -static struct swap_header_v1_2 { +struct swap_header_v1_2 { uint8_t bootbits[1024]; uint32_t version; uint32_t last_page; uint32_t nr_badpages; uint8_t uuid[16]; uint8_t volume_name[16]; -} PACKED *sw; +} PACKED; #define LARGEST_PAGESIZE 0x4000 @@ -41,10 +41,11 @@ int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off, uint64_t size { const uint8_t *buf; unsigned int page; + struct swap_header_v1_2 *sw; info("probing at offset 0x%llx", (unsigned long long) off); - /* the swap signature is at the end of the PAGE_SIZE */ + /* eek, the swap signature is at the end of the PAGE_SIZE */ for (page = 0x1000; page <= LARGEST_PAGESIZE; page <<= 1) { buf = volume_id_get_buffer(id, off + page-10, 10); if (buf == NULL) @@ -56,21 +57,34 @@ int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off, uint64_t size } if (memcmp(buf, "SWAPSPACE2", 10) == 0) { - sw = (struct swap_header_v1_2 *) volume_id_get_buffer(id, off, sizeof(struct swap_header_v1_2)); - if (sw == NULL) - return -1; + id->type = "swap"; strcpy(id->type_version, "2"); - volume_id_set_label_raw(id, sw->volume_name, 16); - volume_id_set_label_string(id, sw->volume_name, 16); - volume_id_set_uuid(id, sw->uuid, UUID_DCE); - goto found; + goto found_label; + } + + if (memcmp(buf, "S1SUSPEND", 9) == 0) { + id->type = "suspend"; + strcpy(id->type_version, "s1suspend"); + goto found_label; + } + + if (memcmp(buf, "ULSUSPEND", 9) == 0) { + id->type = "suspend"; + strcpy(id->type_version, "ulsuspend"); + goto found_label; } } return -1; +found_label: + sw = (struct swap_header_v1_2 *) volume_id_get_buffer(id, off, sizeof(struct swap_header_v1_2)); + if (sw != NULL) { + volume_id_set_label_raw(id, sw->volume_name, 16); + volume_id_set_label_string(id, sw->volume_name, 16); + volume_id_set_uuid(id, sw->uuid, UUID_DCE); + } + found: volume_id_set_usage(id, VOLUME_ID_OTHER); - id->type = "swap"; - return 0; } -- cgit v1.2.3-54-g00ecf