/*
* volume_id - reads volume label and uuid
*
- * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2005-2007 Kay Sievers <kay.sievers@vrfy.org>
*
* 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
#include "libvolume_id.h"
#include "util.h"
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+struct prober {
+ volume_id_probe_fn_t prober;
+ const char *name[4];
+};
+
+static const struct prober prober_raid[] = {
+ { volume_id_probe_linux_raid, { "linux_raid", } },
+ { volume_id_probe_ddf_raid, { "ddf_raid", } },
+ { volume_id_probe_intel_software_raid, { "isw_raid", } },
+ { volume_id_probe_lsi_mega_raid, { "lsi_mega_raid", } },
+ { volume_id_probe_via_raid, { "via_raid", } },
+ { volume_id_probe_silicon_medley_raid, { "silicon_medley_raid", } },
+ { volume_id_probe_nvidia_raid, { "nvidia_raid", } },
+ { volume_id_probe_promise_fasttrack_raid, { "promise_fasttrack_raid", } },
+ { volume_id_probe_highpoint_45x_raid, { "highpoint_raid", } },
+ { volume_id_probe_adaptec_raid, { "adaptec_raid", } },
+ { volume_id_probe_jmicron_raid, { "jmicron_raid", } },
+ { volume_id_probe_lvm1, { "lvm1", } },
+ { volume_id_probe_lvm2, { "lvm2", } },
+ { volume_id_probe_highpoint_37x_raid, { "highpoint_raid", } },
+};
+
+static const struct prober prober_filesystem[] = {
+ { volume_id_probe_vfat, { "vfat", } },
+ { volume_id_probe_linux_swap, { "swap", } },
+ { volume_id_probe_luks, { "luks", } },
+ { volume_id_probe_xfs, { "xfs", } },
+ { volume_id_probe_ext, { "ext2", "ext3", "jbd", } },
+ { volume_id_probe_reiserfs, { "reiserfs", "reiser4", } },
+ { volume_id_probe_jfs, { "jfs", } },
+ { volume_id_probe_udf, { "udf", } },
+ { volume_id_probe_iso9660, { "iso9660", } },
+ { volume_id_probe_hfs_hfsplus, { "hfs", "hfsplus", } },
+ { volume_id_probe_ufs, { "ufs", } },
+ { volume_id_probe_ntfs, { "ntfs", } },
+ { volume_id_probe_cramfs, { "cramfs", } },
+ { volume_id_probe_romfs, { "romfs", } },
+ { volume_id_probe_hpfs, { "hpfs", } },
+ { volume_id_probe_sysv, { "sysv", "xenix", } },
+ { volume_id_probe_minix, { "minix", } },
+ { volume_id_probe_ocfs1, { "ocfs1", } },
+ { volume_id_probe_ocfs2, { "ocfs2", } },
+ { volume_id_probe_vxfs, { "vxfs", } },
+ { volume_id_probe_squashfs, { "squashfs", } },
+ { volume_id_probe_netware, { "netware", } },
+};
+
/* the user can overwrite this log function */
static void default_log(int priority, const char *file, int line, const char *format, ...)
{
volume_id_log_fn_t volume_id_log_fn = default_log;
-int volume_id_probe_raid(struct volume_id *id, uint64_t off, uint64_t size)
+const volume_id_probe_fn_t *volume_id_get_prober_by_type(const char *type)
+{
+ unsigned int p, n;
+
+ if (type == NULL)
+ return NULL;
+
+ for (p = 0; p < ARRAY_SIZE(prober_raid); p++)
+ for (n = 0; prober_raid[p].name[n] != NULL; n++)
+ if (strcmp(type, prober_raid[p].name[n]) == 0)
+ return &prober_raid[p].prober;
+ for (p = 0; p < ARRAY_SIZE(prober_filesystem); p++)
+ for (n = 0; prober_filesystem[p].name[n] != NULL; n++)
+ if (strcmp(type, prober_filesystem[p].name[n]) == 0)
+ return &prober_filesystem[p].prober;
+ return NULL;
+}
+
+int volume_id_get_label(struct volume_id *id, const char **label)
{
if (id == NULL)
return -EINVAL;
+ if (label == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- info("probing at offset 0x%llx, size 0x%llx",
- (unsigned long long) off, (unsigned long long) size);
+ *label = id->label;
+ return 1;
+}
- /* probe for raid first, because fs probes may be successful on raid members */
- if (size) {
- if (volume_id_probe_linux_raid(id, off, size) == 0)
- goto found;
+int volume_id_get_label_raw(struct volume_id *id, const uint8_t **label, size_t *len)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (label == NULL)
+ return -EINVAL;
+ if (len == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- if (volume_id_probe_intel_software_raid(id, off, size) == 0)
- goto found;
+ *label = id->label_raw;
+ *len = id->label_raw_len;
+ return 1;
+}
- if (volume_id_probe_lsi_mega_raid(id, off, size) == 0)
- goto found;
+int volume_id_get_uuid(struct volume_id *id, const char **uuid)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (uuid == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- if (volume_id_probe_via_raid(id, off, size) == 0)
- goto found;
+ *uuid = id->uuid;
+ return 1;
+}
- if (volume_id_probe_silicon_medley_raid(id, off, size) == 0)
- goto found;
+int volume_id_get_uuid_raw(struct volume_id *id, const uint8_t **uuid, size_t *len)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (uuid == NULL)
+ return -EINVAL;
+ if (len == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- if (volume_id_probe_nvidia_raid(id, off, size) == 0)
- goto found;
+ *uuid = id->uuid_raw;
+ *len = id->uuid_raw_len;
+ return 1;
+}
- if (volume_id_probe_promise_fasttrack_raid(id, off, size) == 0)
- goto found;
+int volume_id_get_usage(struct volume_id *id, const char **usage)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (usage == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- if (volume_id_probe_highpoint_45x_raid(id, off, size) == 0)
- goto found;
+ *usage = id->usage;
+ return 1;
+}
- if (volume_id_probe_adaptec_raid(id, off, size) == 0)
- goto found;
+int volume_id_get_type(struct volume_id *id, const char **type)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (type == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
- if (volume_id_probe_jmicron_raid(id, off, size) == 0)
- goto found;
- }
+ *type = id->type;
+ return 1;
+}
- if (volume_id_probe_lvm1(id, off) == 0)
- goto found;
+int volume_id_get_type_version(struct volume_id *id, const char **type_version)
+{
+ if (id == NULL)
+ return -EINVAL;
+ if (type_version == NULL)
+ return -EINVAL;
+ if (id->usage_id == VOLUME_ID_UNUSED)
+ return 0;
+
+ *type_version = id->type_version;
+ return 1;
+}
+
+int volume_id_probe_raid(struct volume_id *id, uint64_t off, uint64_t size)
+{
+ unsigned int i;
- if (volume_id_probe_lvm2(id, off) == 0)
- goto found;
+ if (id == NULL)
+ return -EINVAL;
- if (volume_id_probe_highpoint_37x_raid(id, off) == 0)
- goto found;
+ info("probing at offset 0x%llx, size 0x%llx",
+ (unsigned long long) off, (unsigned long long) size);
+ for (i = 0; i < ARRAY_SIZE(prober_raid); i++)
+ if (prober_raid[i].prober(id, off, size) == 0)
+ goto found;
return -1;
found:
int volume_id_probe_filesystem(struct volume_id *id, uint64_t off, uint64_t size)
{
+ unsigned int i;
+
if (id == NULL)
return -EINVAL;
info("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
- if (volume_id_probe_luks(id, off) == 0)
- goto found;
-
- if (volume_id_probe_vfat(id, off) == 0)
- goto found;
-
- if (volume_id_probe_xfs(id, off) == 0)
- goto found;
-
- /* fill buffer with maximum */
- volume_id_get_buffer(id, 0, SB_BUFFER_SIZE);
-
- if (volume_id_probe_linux_swap(id, off) == 0)
- goto found;
-
- if (volume_id_probe_ext(id, off) == 0)
- goto found;
-
- if (volume_id_probe_reiserfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_jfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_udf(id, off) == 0)
- goto found;
-
- if (volume_id_probe_iso9660(id, off) == 0)
- goto found;
-
- if (volume_id_probe_hfs_hfsplus(id, off) == 0)
- goto found;
-
- if (volume_id_probe_ufs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_ntfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_cramfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_romfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_hpfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_sysv(id, off) == 0)
- goto found;
-
- if (volume_id_probe_minix(id, off) == 0)
- goto found;
-
- if (volume_id_probe_ocfs1(id, off) == 0)
- goto found;
-
- if (volume_id_probe_ocfs2(id, off) == 0)
- goto found;
-
- if (volume_id_probe_vxfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_squashfs(id, off) == 0)
- goto found;
-
- if (volume_id_probe_netware(id, off) == 0)
- goto found;
-
+ for (i = 0; i < ARRAY_SIZE(prober_filesystem); i++)
+ if (prober_filesystem[i].prober(id, off, size) == 0)
+ goto found;
return -1;
found:
if (id == NULL)
return -EINVAL;
+ /* probe for raid first, because fs probes may be successful on raid members */
if (volume_id_probe_raid(id, off, size) == 0)
return 0;
return -1;
}
+void volume_id_all_probers(all_probers_fn_t all_probers_fn,
+ struct volume_id *id, uint64_t off, uint64_t size,
+ void *data)
+{
+ unsigned int i;
+
+ if (all_probers_fn == NULL)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(prober_raid); i++)
+ if (all_probers_fn(prober_raid[i].prober, id, off, size, data) != 0)
+ goto out;
+ for (i = 0; i < ARRAY_SIZE(prober_filesystem); i++)
+ if (all_probers_fn(prober_filesystem[i].prober, id, off, size, data) != 0)
+ goto out;
+out:
+ return;
+}
+
/* open volume by already open file descriptor */
struct volume_id *volume_id_open_fd(int fd)
{
~ianmdlvl / elogind.git / blobdiff