summaryrefslogtreecommitdiffstats
path: root/misc-utils/blkid.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--misc-utils/blkid.c947
1 files changed, 947 insertions, 0 deletions
diff --git a/misc-utils/blkid.c b/misc-utils/blkid.c
new file mode 100644
index 0000000..3dcb9e5
--- /dev/null
+++ b/misc-utils/blkid.c
@@ -0,0 +1,947 @@
+/*
+ * blkid.c - User command-line interface for libblkid
+ *
+ * Copyright (C) 2001 Andreas Dilger
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <getopt.h>
+
+#define OUTPUT_FULL (1 << 0)
+#define OUTPUT_VALUE_ONLY (1 << 1)
+#define OUTPUT_DEVICE_ONLY (1 << 2)
+#define OUTPUT_PRETTY_LIST (1 << 3) /* deprecated */
+#define OUTPUT_UDEV_LIST (1 << 4) /* deprecated */
+#define OUTPUT_EXPORT_LIST (1 << 5)
+
+#define BLKID_EXIT_NOTFOUND 2 /* token or device not found */
+#define BLKID_EXIT_OTHER 4 /* bad usage or other error */
+#define BLKID_EXIT_AMBIVAL 8 /* ambivalent low-level probing detected */
+
+#include <blkid.h>
+
+#include "ismounted.h"
+
+#include "strutils.h"
+#define OPTUTILS_EXIT_CODE BLKID_EXIT_OTHER /* exclusive_option() */
+#include "optutils.h"
+#define CLOSE_EXIT_CODE BLKID_EXIT_OTHER /* close_stdout() */
+#include "closestream.h"
+
+#include "nls.h"
+#include "ttyutils.h"
+
+#define XALLOC_EXIT_CODE BLKID_EXIT_OTHER /* x.*alloc(), xstrndup() */
+#include "xalloc.h"
+
+struct blkid_control {
+ int output;
+ uintmax_t offset;
+ uintmax_t size;
+ char *show[128];
+ unsigned int
+ eval:1,
+ gc:1,
+ lookup:1,
+ lowprobe:1,
+ lowprobe_superblocks:1,
+ lowprobe_topology:1,
+ raw_chars:1;
+};
+
+static void print_version(FILE *out)
+{
+ fprintf(out, _("%s from %s (libblkid %s, %s)\n"),
+ program_invocation_short_name, PACKAGE_STRING,
+ LIBBLKID_VERSION, LIBBLKID_DATE);
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+
+ fputs(USAGE_HEADER, out);
+ fprintf(out, _( " %s --label <label> | --uuid <uuid>\n\n"), program_invocation_short_name);
+ fprintf(out, _( " %s [--cache-file <file>] [-ghlLv] [--output <format>] [--match-tag <tag>] \n"
+ " [--match-token <token>] [<dev> ...]\n\n"), program_invocation_short_name);
+ fprintf(out, _( " %s -p [--match-tag <tag>] [--offset <offset>] [--size <size>] \n"
+ " [--output <format>] <dev> ...\n\n"), program_invocation_short_name);
+ fprintf(out, _( " %s -i [--match-tag <tag>] [--output <format>] <dev> ...\n"), program_invocation_short_name);
+ fputs(USAGE_OPTIONS, out);
+ fputs(_( " -c, --cache-file <file> read from <file> instead of reading from the default\n"
+ " cache file (-c /dev/null means no cache)\n"), out);
+ fputs(_( " -d, --no-encoding don't encode non-printing characters\n"), out);
+ fputs(_( " -g, --garbage-collect garbage collect the blkid cache\n"), out);
+ fputs(_( " -o, --output <format> output format; can be one of:\n"
+ " value, device, export or full; (default: full)\n"), out);
+ fputs(_( " -k, --list-filesystems list all known filesystems/RAIDs and exit\n"), out);
+ fputs(_( " -s, --match-tag <tag> show specified tag(s) (default show all tags)\n"), out);
+ fputs(_( " -t, --match-token <token> find device with a specific token (NAME=value pair)\n"), out);
+ fputs(_( " -l, --list-one look up only first device with token specified by -t\n"), out);
+ fputs(_( " -L, --label <label> convert LABEL to device name\n"), out);
+ fputs(_( " -U, --uuid <uuid> convert UUID to device name\n"), out);
+ fputs(_( " <dev> specify device(s) to probe (default: all devices)\n"), out);
+ fputs( "\n", out);
+ fputs(_( "Low-level probing options:\n"), out);
+ fputs(_( " -p, --probe low-level superblocks probing (bypass cache)\n"), out);
+ fputs(_( " -i, --info gather information about I/O limits\n"), out);
+ fputs(_( " -S, --size <size> overwrite device size\n"), out);
+ fputs(_( " -O, --offset <offset> probe at the given offset\n"), out);
+ fputs(_( " -u, --usages <list> filter by \"usage\" (e.g. -u filesystem,raid)\n"), out);
+ fputs(_( " -n, --match-types <list> filter by filesystem type (e.g. -n vfat,ext3)\n"), out);
+
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(28));
+ printf(USAGE_MAN_TAIL("blkid(8)"));
+ exit(EXIT_SUCCESS);
+}
+
+/*
+ * This function does "safe" printing. It will convert non-printable
+ * ASCII characters using '^' and M- notation.
+ *
+ * If 'esc' is defined then escape all chars from esc by \.
+ */
+static void safe_print(const struct blkid_control *ctl, const char *cp, int len,
+ const char *esc)
+{
+ unsigned char ch;
+
+ if (len < 0)
+ len = strlen(cp);
+
+ while (len--) {
+ ch = *cp++;
+ if (!ctl->raw_chars) {
+ if (ch >= 128) {
+ fputs("M-", stdout);
+ ch -= 128;
+ }
+ if ((ch < 32) || (ch == 0x7f)) {
+ fputc('^', stdout);
+ ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
+
+ } else if (esc && strchr(esc, ch))
+ fputc('\\', stdout);
+ }
+ fputc(ch, stdout);
+ }
+}
+
+static int pretty_print_word(const char *str, int max_len,
+ int left_len, int overflow_nl)
+{
+ int len = strlen(str) + left_len;
+ int ret = 0;
+
+ fputs(str, stdout);
+ if (overflow_nl && len > max_len) {
+ fputc('\n', stdout);
+ len = 0;
+ } else if (len > max_len)
+ ret = len - max_len;
+ do {
+ fputc(' ', stdout);
+ } while (len++ < max_len);
+ return ret;
+}
+
+static void pretty_print_line(const char *device, const char *fs_type,
+ const char *label, const char *mtpt,
+ const char *uuid)
+{
+ static int device_len = 10, fs_type_len = 7;
+ static int label_len = 8, mtpt_len = 14;
+ static int term_width = -1;
+ int len, w;
+
+ if (term_width < 0) {
+ term_width = get_terminal_width(80);
+ }
+ if (term_width > 80) {
+ term_width -= 80;
+ w = term_width / 10;
+ if (w > 8)
+ w = 8;
+ term_width -= 2*w;
+ label_len += w;
+ fs_type_len += w;
+ w = term_width/2;
+ device_len += w;
+ mtpt_len +=w;
+ }
+
+ len = pretty_print_word(device, device_len, 0, 1);
+ len = pretty_print_word(fs_type, fs_type_len, len, 0);
+ len = pretty_print_word(label, label_len, len, 0);
+ pretty_print_word(mtpt, mtpt_len, len, 0);
+
+ fputs(uuid, stdout);
+ fputc('\n', stdout);
+}
+
+static void pretty_print_dev(blkid_dev dev)
+{
+ blkid_tag_iterate iter;
+ const char *type, *value, *devname;
+ const char *uuid = "", *fs_type = "", *label = "";
+ int len, mount_flags;
+ char mtpt[80];
+ int retval;
+
+ if (dev == NULL) {
+ pretty_print_line("device", "fs_type", "label",
+ "mount point", "UUID");
+ for (len=get_terminal_width(0)-1; len > 0; len--)
+ fputc('-', stdout);
+ fputc('\n', stdout);
+ return;
+ }
+
+ devname = blkid_dev_devname(dev);
+ if (access(devname, F_OK))
+ return;
+
+ /* Get the uuid, label, type */
+ iter = blkid_tag_iterate_begin(dev);
+ while (blkid_tag_next(iter, &type, &value) == 0) {
+ if (!strcmp(type, "UUID"))
+ uuid = value;
+ if (!strcmp(type, "TYPE"))
+ fs_type = value;
+ if (!strcmp(type, "LABEL"))
+ label = value;
+ }
+ blkid_tag_iterate_end(iter);
+
+ /* Get the mount point */
+ mtpt[0] = 0;
+ retval = check_mount_point(devname, &mount_flags, mtpt, sizeof(mtpt));
+ if (retval == 0) {
+ if (mount_flags & MF_MOUNTED) {
+ if (!mtpt[0])
+ strcpy(mtpt, _("(mounted, mtpt unknown)"));
+ } else if (mount_flags & MF_BUSY)
+ strcpy(mtpt, _("(in use)"));
+ else
+ strcpy(mtpt, _("(not mounted)"));
+ }
+
+ pretty_print_line(devname, fs_type, label, mtpt, uuid);
+}
+
+static void print_udev_format(const char *name, const char *value)
+{
+ char enc[265], safe[256];
+ size_t namelen = strlen(name);
+
+ *safe = *enc = '\0';
+
+ if (!strcmp(name, "TYPE") || !strcmp(name, "VERSION")) {
+ blkid_encode_string(value, enc, sizeof(enc));
+ printf("ID_FS_%s=%s\n", name, enc);
+
+ } else if (!strcmp(name, "UUID") ||
+ !strncmp(name, "LABEL", 5) ||
+ !strcmp(name, "UUID_SUB")) {
+
+ blkid_safe_string(value, safe, sizeof(safe));
+ printf("ID_FS_%s=%s\n", name, safe);
+
+ blkid_encode_string(value, enc, sizeof(enc));
+ printf("ID_FS_%s_ENC=%s\n", name, enc);
+
+ } else if (!strcmp(name, "PTUUID")) {
+ printf("ID_PART_TABLE_UUID=%s\n", value);
+
+ } else if (!strcmp(name, "PTTYPE")) {
+ printf("ID_PART_TABLE_TYPE=%s\n", value);
+
+ } else if (!strcmp(name, "PART_ENTRY_NAME") ||
+ !strcmp(name, "PART_ENTRY_TYPE")) {
+
+ blkid_encode_string(value, enc, sizeof(enc));
+ printf("ID_%s=%s\n", name, enc);
+
+ } else if (!strncmp(name, "PART_ENTRY_", 11))
+ printf("ID_%s=%s\n", name, value);
+
+ else if (namelen >= 15 && (
+ !strcmp(name + (namelen - 12), "_SECTOR_SIZE") ||
+ !strcmp(name + (namelen - 8), "_IO_SIZE") ||
+ !strcmp(name, "ALIGNMENT_OFFSET")))
+ printf("ID_IOLIMIT_%s=%s\n", name, value);
+ else
+ printf("ID_FS_%s=%s\n", name, value);
+}
+
+static int has_item(const struct blkid_control *ctl, const char *item)
+{
+ char * const *p;
+
+ for (p = ctl->show; *p != NULL; p++)
+ if (!strcmp(item, *p))
+ return 1;
+ return 0;
+}
+
+static void print_value(const struct blkid_control *ctl, int num,
+ const char *devname, const char *value,
+ const char *name, size_t valsz)
+{
+ if (ctl->output & OUTPUT_VALUE_ONLY) {
+ fputs(value, stdout);
+ fputc('\n', stdout);
+
+ } else if (ctl->output & OUTPUT_UDEV_LIST) {
+ print_udev_format(name, value);
+
+ } else if (ctl->output & OUTPUT_EXPORT_LIST) {
+ if (num == 1 && devname)
+ printf("DEVNAME=%s\n", devname);
+ fputs(name, stdout);
+ fputs("=", stdout);
+ safe_print(ctl, value, valsz, " \\\"'$`<>");
+ fputs("\n", stdout);
+
+ } else {
+ if (num == 1 && devname)
+ printf("%s:", devname);
+ fputs(" ", stdout);
+ fputs(name, stdout);
+ fputs("=\"", stdout);
+ safe_print(ctl, value, valsz, "\"\\");
+ fputs("\"", stdout);
+ }
+}
+
+static void print_tags(const struct blkid_control *ctl, blkid_dev dev)
+{
+ blkid_tag_iterate iter;
+ const char *type, *value, *devname;
+ int num = 1;
+ static int first = 1;
+
+ if (!dev)
+ return;
+
+ if (ctl->output & OUTPUT_PRETTY_LIST) {
+ pretty_print_dev(dev);
+ return;
+ }
+
+ devname = blkid_dev_devname(dev);
+
+ if (ctl->output & OUTPUT_DEVICE_ONLY) {
+ printf("%s\n", devname);
+ return;
+ }
+
+ iter = blkid_tag_iterate_begin(dev);
+ while (blkid_tag_next(iter, &type, &value) == 0) {
+ if (ctl->show[0] && !has_item(ctl, type))
+ continue;
+
+ if (num == 1 && !first &&
+ (ctl->output & (OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST)))
+ /* add extra line between output from more devices */
+ fputc('\n', stdout);
+
+ print_value(ctl, num++, devname, value, type, strlen(value));
+ }
+ blkid_tag_iterate_end(iter);
+
+ if (num > 1) {
+ if (!(ctl->output & (OUTPUT_VALUE_ONLY | OUTPUT_UDEV_LIST |
+ OUTPUT_EXPORT_LIST)))
+ printf("\n");
+ first = 0;
+ }
+}
+
+
+static int append_str(char **res, size_t *sz, const char *a, const char *b)
+{
+ char *str = *res;
+ size_t asz = a ? strlen(a) : 0;
+ size_t bsz = b ? strlen(b) : 0;
+ size_t len = *sz + asz + bsz;
+
+ if (!len)
+ return -1;
+
+ *res = str = xrealloc(str, len + 1);
+ str += *sz;
+
+ if (a) {
+ memcpy(str, a, asz);
+ str += asz;
+ }
+ if (b) {
+ memcpy(str, b, bsz);
+ str += bsz;
+ }
+ *str = '\0';
+ *sz = len;
+ return 0;
+}
+
+/*
+ * Compose and print ID_FS_AMBIVALENT for udev
+ */
+static int print_udev_ambivalent(blkid_probe pr)
+{
+ char *val = NULL;
+ size_t valsz = 0;
+ int count = 0, rc = -1;
+
+ while (!blkid_do_probe(pr)) {
+ const char *usage_txt = NULL, *type = NULL, *version = NULL;
+ char enc[256];
+
+ blkid_probe_lookup_value(pr, "USAGE", &usage_txt, NULL);
+ blkid_probe_lookup_value(pr, "TYPE", &type, NULL);
+ blkid_probe_lookup_value(pr, "VERSION", &version, NULL);
+
+ if (!usage_txt || !type)
+ continue;
+
+ blkid_encode_string(usage_txt, enc, sizeof(enc));
+ if (append_str(&val, &valsz, enc, ":"))
+ goto done;
+
+ blkid_encode_string(type, enc, sizeof(enc));
+ if (append_str(&val, &valsz, enc, version ? ":" : " "))
+ goto done;
+
+ if (version) {
+ blkid_encode_string(version, enc, sizeof(enc));
+ if (append_str(&val, &valsz, enc, " "))
+ goto done;
+ }
+ count++;
+ }
+
+ if (count > 1) {
+ *(val + valsz - 1) = '\0'; /* rem tailing whitespace */
+ printf("ID_FS_AMBIVALENT=%s\n", val);
+ rc = 0;
+ }
+done:
+ free(val);
+ return rc;
+}
+
+static int lowprobe_superblocks(blkid_probe pr)
+{
+ struct stat st;
+ int rc, fd = blkid_probe_get_fd(pr);
+
+ if (fd < 0 || fstat(fd, &st))
+ return -1;
+
+ blkid_probe_enable_partitions(pr, 1);
+
+ if (!S_ISCHR(st.st_mode) && blkid_probe_get_size(pr) <= 1024 * 1440 &&
+ blkid_probe_is_wholedisk(pr)) {
+ /*
+ * check if the small disk is partitioned, if yes then
+ * don't probe for filesystems.
+ */
+ blkid_probe_enable_superblocks(pr, 0);
+
+ rc = blkid_do_fullprobe(pr);
+ if (rc < 0)
+ return rc; /* -1 = error, 1 = nothing, 0 = success */
+
+ if (blkid_probe_lookup_value(pr, "PTTYPE", NULL, NULL) == 0)
+ return 0; /* partition table detected */
+ }
+
+ blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
+ blkid_probe_enable_superblocks(pr, 1);
+
+ return blkid_do_safeprobe(pr);
+}
+
+static int lowprobe_topology(blkid_probe pr)
+{
+ /* enable topology probing only */
+ blkid_probe_enable_topology(pr, 1);
+
+ blkid_probe_enable_superblocks(pr, 0);
+ blkid_probe_enable_partitions(pr, 0);
+
+ return blkid_do_fullprobe(pr);
+}
+
+static int lowprobe_device(blkid_probe pr, const char *devname,
+ struct blkid_control *ctl)
+{
+ const char *data;
+ const char *name;
+ int nvals = 0, n, num = 1;
+ size_t len;
+ int fd;
+ int rc = 0;
+ static int first = 1;
+
+ fd = open(devname, O_RDONLY|O_CLOEXEC);
+ if (fd < 0) {
+ warn(_("error: %s"), devname);
+ return BLKID_EXIT_NOTFOUND;
+ }
+ if (blkid_probe_set_device(pr, fd, ctl->offset, ctl->size))
+ goto done;
+
+ if (ctl->lowprobe_topology)
+ rc = lowprobe_topology(pr);
+ if (rc >= 0 && ctl->lowprobe_superblocks)
+ rc = lowprobe_superblocks(pr);
+ if (rc < 0)
+ goto done;
+
+ if (!rc)
+ nvals = blkid_probe_numof_values(pr);
+
+ if (nvals && !first && ctl->output & (OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST))
+ /* add extra line between output from devices */
+ fputc('\n', stdout);
+
+ if (nvals && (ctl->output & OUTPUT_DEVICE_ONLY)) {
+ printf("%s\n", devname);
+ goto done;
+ }
+
+ for (n = 0; n < nvals; n++) {
+ if (blkid_probe_get_value(pr, n, &name, &data, &len))
+ continue;
+ if (ctl->show[0] && !has_item(ctl, name))
+ continue;
+ len = strnlen(data, len);
+ print_value(ctl, num++, devname, data, name, len);
+ }
+
+ if (first)
+ first = 0;
+
+ if (nvals >= 1 && !(ctl->output & (OUTPUT_VALUE_ONLY |
+ OUTPUT_UDEV_LIST | OUTPUT_EXPORT_LIST)))
+ printf("\n");
+done:
+ if (rc == -2) {
+ if (ctl->output & OUTPUT_UDEV_LIST)
+ print_udev_ambivalent(pr);
+ else
+ warnx(_("%s: ambivalent result (probably more "
+ "filesystems on the device, use wipefs(8) "
+ "to see more details)"),
+ devname);
+ }
+ close(fd);
+
+ if (rc == -2)
+ return BLKID_EXIT_AMBIVAL; /* ambivalent probing result */
+ if (!nvals)
+ return BLKID_EXIT_NOTFOUND; /* nothing detected */
+
+ return 0; /* success */
+}
+
+/* converts comma separated list to BLKID_USAGE_* mask */
+static int list_to_usage(const char *list, int *flag)
+{
+ int mask = 0;
+ const char *word = NULL, *p = list;
+
+ if (p && strncmp(p, "no", 2) == 0) {
+ *flag = BLKID_FLTR_NOTIN;
+ p += 2;
+ }
+ if (!p || !*p)
+ goto err;
+ while(p) {
+ word = p;
+ p = strchr(p, ',');
+ if (p)
+ p++;
+ if (!strncmp(word, "filesystem", 10))
+ mask |= BLKID_USAGE_FILESYSTEM;
+ else if (!strncmp(word, "raid", 4))
+ mask |= BLKID_USAGE_RAID;
+ else if (!strncmp(word, "crypto", 6))
+ mask |= BLKID_USAGE_CRYPTO;
+ else if (!strncmp(word, "other", 5))
+ mask |= BLKID_USAGE_OTHER;
+ else
+ goto err;
+ }
+ return mask;
+err:
+ *flag = 0;
+ warnx(_("unknown keyword in -u <list> argument: '%s'"),
+ word ? word : list);
+ exit(BLKID_EXIT_OTHER);
+}
+
+/* converts comma separated list to types[] */
+static char **list_to_types(const char *list, int *flag)
+{
+ int i;
+ const char *p = list;
+ char **res = NULL;
+
+ if (p && strncmp(p, "no", 2) == 0) {
+ *flag = BLKID_FLTR_NOTIN;
+ p += 2;
+ }
+ if (!p || !*p) {
+ warnx(_("error: -u <list> argument is empty"));
+ goto err;
+ }
+ for (i = 1; p && (p = strchr(p, ',')); i++, p++);
+
+ res = xcalloc(i + 1, sizeof(char *));
+ p = *flag & BLKID_FLTR_NOTIN ? list + 2 : list;
+ i = 0;
+
+ while(p) {
+ const char *word = p;
+ p = strchr(p, ',');
+ res[i++] = p ? xstrndup(word, p - word) : xstrdup(word);
+ if (p)
+ p++;
+ }
+ res[i] = NULL;
+ return res;
+err:
+ *flag = 0;
+ free(res);
+ exit(BLKID_EXIT_OTHER);
+}
+
+static void free_types_list(char *list[])
+{
+ char **n;
+
+ if (!list)
+ return;
+ for (n = list; *n; n++)
+ free(*n);
+ free(list);
+}
+
+int main(int argc, char **argv)
+{
+ struct blkid_control ctl = { .output = OUTPUT_FULL, 0 };
+ blkid_cache cache = NULL;
+ char **devices = NULL;
+ char *search_type = NULL, *search_value = NULL;
+ char *read = NULL;
+ int fltr_usage = 0;
+ char **fltr_type = NULL;
+ int fltr_flag = BLKID_FLTR_ONLYIN;
+ unsigned int numdev = 0, numtag = 0;
+ int err = BLKID_EXIT_OTHER;
+ unsigned int i;
+ int c;
+
+ static const struct option longopts[] = {
+ { "cache-file", required_argument, NULL, 'c' },
+ { "no-encoding", no_argument, NULL, 'd' },
+ { "garbage-collect", no_argument, NULL, 'g' },
+ { "output", required_argument, NULL, 'o' },
+ { "list-filesystems", no_argument, NULL, 'k' },
+ { "match-tag", required_argument, NULL, 's' },
+ { "match-token", required_argument, NULL, 't' },
+ { "list-one", no_argument, NULL, 'l' },
+ { "label", required_argument, NULL, 'L' },
+ { "uuid", required_argument, NULL, 'U' },
+ { "probe", no_argument, NULL, 'p' },
+ { "info", no_argument, NULL, 'i' },
+ { "size", required_argument, NULL, 'S' },
+ { "offset", required_argument, NULL, 'O' },
+ { "usages", required_argument, NULL, 'u' },
+ { "match-types", required_argument, NULL, 'n' },
+ { "version", no_argument, NULL, 'V' },
+ { "help", no_argument, NULL, 'h' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
+ { 'n','u' },
+ { 0 }
+ };
+ int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ atexit(close_stdout);
+
+ strutils_set_exitcode(BLKID_EXIT_OTHER);
+
+ while ((c = getopt_long (argc, argv,
+ "c:dghilL:n:ko:O:ps:S:t:u:U:w:Vv", longopts, NULL)) != -1) {
+
+ err_exclusive_options(c, NULL, excl, excl_st);
+
+ switch (c) {
+ case 'c':
+ read = optarg;
+ break;
+ case 'd':
+ ctl.raw_chars = 1;
+ break;
+ case 'L':
+ ctl.eval = 1;
+ search_value = xstrdup(optarg);
+ search_type = xstrdup("LABEL");
+ break;
+ case 'n':
+ fltr_type = list_to_types(optarg, &fltr_flag);
+ break;
+ case 'u':
+ fltr_usage = list_to_usage(optarg, &fltr_flag);
+ break;
+ case 'U':
+ ctl.eval = 1;
+ search_value = xstrdup(optarg);
+ search_type = xstrdup("UUID");
+ break;
+ case 'i':
+ ctl.lowprobe_topology = 1;
+ break;
+ case 'l':
+ ctl.lookup = 1;
+ break;
+ case 'g':
+ ctl.gc = 1;
+ break;
+ case 'k':
+ {
+ size_t idx = 0;
+ const char *name = NULL;
+
+ while (blkid_superblocks_get_name(idx++, &name, NULL) == 0)
+ printf("%s\n", name);
+ exit(EXIT_SUCCESS);
+ }
+ case 'o':
+ if (!strcmp(optarg, "value"))
+ ctl.output = OUTPUT_VALUE_ONLY;
+ else if (!strcmp(optarg, "device"))
+ ctl.output = OUTPUT_DEVICE_ONLY;
+ else if (!strcmp(optarg, "list"))
+ ctl.output = OUTPUT_PRETTY_LIST; /* deprecated */
+ else if (!strcmp(optarg, "udev"))
+ ctl.output = OUTPUT_UDEV_LIST;
+ else if (!strcmp(optarg, "export"))
+ ctl.output = OUTPUT_EXPORT_LIST;
+ else if (!strcmp(optarg, "full"))
+ ctl.output = 0;
+ else
+ errx(BLKID_EXIT_OTHER, _("unsupported output format %s"), optarg);
+ break;
+ case 'O':
+ ctl.offset = strtosize_or_err(optarg, _("invalid offset argument"));
+ break;
+ case 'p':
+ ctl.lowprobe_superblocks = 1;
+ break;
+ case 's':
+ if (numtag + 1 >= sizeof(ctl.show) / sizeof(*ctl.show)) {
+ warnx(_("Too many tags specified"));
+ errtryhelp(err);
+ }
+ ctl.show[numtag++] = optarg;
+ break;
+ case 'S':
+ ctl.size = strtosize_or_err(optarg, _("invalid size argument"));
+ break;
+ case 't':
+ if (search_type) {
+ warnx(_("Can only search for "
+ "one NAME=value pair"));
+ errtryhelp(err);
+ }
+ if (blkid_parse_tag_string(optarg,
+ &search_type,
+ &search_value)) {
+ warnx(_("-t needs NAME=value pair"));
+ errtryhelp(err);
+ }
+ break;
+ case 'V':
+ case 'v':
+ print_version(stdout);
+ err = 0;
+ goto exit;
+ case 'w':
+ /* ignore - backward compatibility */
+ break;
+ case 'h':
+ usage();
+ break;
+ default:
+ errtryhelp(EXIT_FAILURE);
+ }
+ }
+
+ if (ctl.lowprobe_topology || ctl.lowprobe_superblocks)
+ ctl.lowprobe = 1;
+
+ /* The rest of the args are device names */
+ if (optind < argc) {
+ devices = xcalloc(argc - optind, sizeof(char *));
+ while (optind < argc)
+ devices[numdev++] = argv[optind++];
+ }
+
+ /* convert LABEL/UUID lookup to evaluate request */
+ if (ctl.lookup && ctl.output == OUTPUT_DEVICE_ONLY && search_type &&
+ (!strcmp(search_type, "LABEL") || !strcmp(search_type, "UUID"))) {
+ ctl.eval = 1;
+ ctl.lookup = 0;
+ }
+
+ if (!ctl.lowprobe && !ctl.eval && blkid_get_cache(&cache, read) < 0)
+ goto exit;
+
+ if (ctl.gc) {
+ blkid_gc_cache(cache);
+ err = 0;
+ goto exit;
+ }
+ err = BLKID_EXIT_NOTFOUND;
+
+ if (ctl.eval == 0 && (ctl.output & OUTPUT_PRETTY_LIST)) {
+ if (ctl.lowprobe)
+ errx(BLKID_EXIT_OTHER,
+ _("The low-level probing mode does not "
+ "support 'list' output format"));
+ pretty_print_dev(NULL);
+ }
+
+ if (ctl.lowprobe) {
+ /*
+ * Low-level API
+ */
+ blkid_probe pr;
+
+ if (!numdev)
+ errx(BLKID_EXIT_OTHER,
+ _("The low-level probing mode "
+ "requires a device"));
+
+ /* automatically enable 'export' format for I/O Limits */
+ if (!ctl.output && ctl.lowprobe_topology)
+ ctl.output = OUTPUT_EXPORT_LIST;
+
+ pr = blkid_new_probe();
+ if (!pr)
+ goto exit;
+
+ if (ctl.lowprobe_superblocks) {
+ blkid_probe_set_superblocks_flags(pr,
+ BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID |
+ BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE |
+ BLKID_SUBLKS_USAGE | BLKID_SUBLKS_VERSION);
+
+
+ if (fltr_usage &&
+ blkid_probe_filter_superblocks_usage(pr, fltr_flag, fltr_usage))
+ goto exit;
+
+ else if (fltr_type &&
+ blkid_probe_filter_superblocks_type(pr, fltr_flag, fltr_type))
+ goto exit;
+ }
+
+ for (i = 0; i < numdev; i++) {
+ err = lowprobe_device(pr, devices[i], &ctl);
+ if (err)
+ break;
+ }
+ blkid_free_probe(pr);
+ } else if (ctl.eval) {
+ /*
+ * Evaluate API
+ */
+ char *res = blkid_evaluate_tag(search_type, search_value, NULL);
+ if (res) {
+ err = 0;
+ printf("%s\n", res);
+ }
+ } else if (ctl.lookup) {
+ /*
+ * Classic (cache based) API
+ */
+ blkid_dev dev;
+
+ if (!search_type)
+ errx(BLKID_EXIT_OTHER,
+ _("The lookup option requires a "
+ "search type specified using -t"));
+ /* Load any additional devices not in the cache */
+ for (i = 0; i < numdev; i++)
+ blkid_get_dev(cache, devices[i], BLKID_DEV_NORMAL);
+
+ if ((dev = blkid_find_dev_with_tag(cache, search_type,
+ search_value))) {
+ print_tags(&ctl, dev);
+ err = 0;
+ }
+ /* If we didn't specify a single device, show all available devices */
+ } else if (!numdev) {
+ blkid_dev_iterate iter;
+ blkid_dev dev;
+
+ blkid_probe_all(cache);
+
+ iter = blkid_dev_iterate_begin(cache);
+ blkid_dev_set_search(iter, search_type, search_value);
+ while (blkid_dev_next(iter, &dev) == 0) {
+ dev = blkid_verify(cache, dev);
+ if (!dev)
+ continue;
+ print_tags(&ctl, dev);
+ err = 0;
+ }
+ blkid_dev_iterate_end(iter);
+ /* Add all specified devices to cache (optionally display tags) */
+ } else for (i = 0; i < numdev; i++) {
+ blkid_dev dev = blkid_get_dev(cache, devices[i],
+ BLKID_DEV_NORMAL);
+
+ if (dev) {
+ if (search_type &&
+ !blkid_dev_has_tag(dev, search_type,
+ search_value))
+ continue;
+ print_tags(&ctl, dev);
+ err = 0;
+ }
+ }
+
+exit:
+ free(search_type);
+ free(search_value);
+ free_types_list(fltr_type);
+ if (!ctl.lowprobe && !ctl.eval)
+ blkid_put_cache(cache);
+ free(devices);
+ return err;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 03:16:58 +0000