diff options
Diffstat (limited to 'extras/volume_id/libvolume_id/volume_id.c')
| -rw-r--r-- | extras/volume_id/libvolume_id/volume_id.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/extras/volume_id/libvolume_id/volume_id.c b/extras/volume_id/libvolume_id/volume_id.c new file mode 100644 index 0000000000..09d1e31725 --- /dev/null +++ b/extras/volume_id/libvolume_id/volume_id.c @@ -0,0 +1,200 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2005 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 + * Free Software Foundation version 2 of the License. + */ + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE 1 +#endif + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <errno.h> +#include <ctype.h> +#include <fcntl.h> +#include <sys/stat.h> + +#include "volume_id.h" +#include "logging.h" +#include "util.h" + + +int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size) +{ + if (id == NULL) + return -EINVAL; + + /* probe for raid first, cause fs probes may be successful on raid members */ + if (size) { + if (volume_id_probe_linux_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_intel_software_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_lsi_mega_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_via_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_silicon_medley_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_nvidia_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_promise_fasttrack_raid(id, off, size) == 0) + goto exit; + + if (volume_id_probe_highpoint_45x_raid(id, off, size) == 0) + goto exit; + } + + if (volume_id_probe_lvm1(id, off) == 0) + goto exit; + + if (volume_id_probe_lvm2(id, off) == 0) + goto exit; + + if (volume_id_probe_highpoint_37x_raid(id, off) == 0) + goto exit; + + if (volume_id_probe_luks(id, off) == 0) + goto exit; + + /* signature in the first block, only small buffer needed */ + if (volume_id_probe_vfat(id, off) == 0) + goto exit; + + if (volume_id_probe_xfs(id, off) == 0) + goto exit; + + /* fill buffer with maximum */ + volume_id_get_buffer(id, 0, SB_BUFFER_SIZE); + + if (volume_id_probe_linux_swap(id, off) == 0) + goto exit; + + if (volume_id_probe_ext(id, off) == 0) + goto exit; + + if (volume_id_probe_reiserfs(id, off) == 0) + goto exit; + + if (volume_id_probe_jfs(id, off) == 0) + goto exit; + + if (volume_id_probe_udf(id, off) == 0) + goto exit; + + if (volume_id_probe_iso9660(id, off) == 0) + goto exit; + + if (volume_id_probe_hfs_hfsplus(id, off) == 0) + goto exit; + + if (volume_id_probe_ufs(id, off) == 0) + goto exit; + + if (volume_id_probe_ntfs(id, off) == 0) + goto exit; + + if (volume_id_probe_cramfs(id, off) == 0) + goto exit; + + if (volume_id_probe_romfs(id, off) == 0) + goto exit; + + if (volume_id_probe_hpfs(id, off) == 0) + goto exit; + + if (volume_id_probe_sysv(id, off) == 0) + goto exit; + + if (volume_id_probe_minix(id, off) == 0) + goto exit; + + if (volume_id_probe_ocfs1(id, off) == 0) + goto exit; + + if (volume_id_probe_ocfs2(id, off) == 0) + goto exit; + + if (volume_id_probe_vxfs(id, off) == 0) + goto exit; + + return -1; + +exit: + /* If the filestystem in recognized, we free the allocated buffers, + otherwise they will stay in place for the possible next probe call */ + volume_id_free_buffer(id); + + return 0; +} + +/* open volume by already open file descriptor */ +struct volume_id *volume_id_open_fd(int fd) +{ + struct volume_id *id; + + id = malloc(sizeof(struct volume_id)); + if (id == NULL) + return NULL; + memset(id, 0x00, sizeof(struct volume_id)); + + id->fd = fd; + + return id; +} + +/* open volume by device node */ +struct volume_id *volume_id_open_node(const char *path) +{ + struct volume_id *id; + int fd; + + fd = open(path, O_RDONLY); + if (fd < 0) { + dbg("unable to open '%s'", path); + return NULL; + } + + id = volume_id_open_fd(fd); + if (id == NULL) + return NULL; + + /* close fd on device close */ + id->fd_close = 1; + + return id; +} + +void volume_id_close(struct volume_id *id) +{ + if (id == NULL) + return; + + if (id->fd_close != 0) + close(id->fd); + + volume_id_free_buffer(id); + + if (id->partitions != NULL) + free(id->partitions); + + free(id); +} |