| /* |
| * partx: tell the kernel about your disk's partitions |
| * [This is not an fdisk - adding and removing partitions |
| * is not a change of the disk, but just telling the kernel |
| * about presence and numbering of on-disk partitions.] |
| * |
| * aeb, 2000-03-21 -- sah is 42 now |
| * |
| * Copyright (C) 2010 Davidlohr Bueso <dave@gnu.org> |
| * Rewritten to use libblkid for util-linux |
| * based on ideas from Karel Zak <kzak@redhat.com> |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| #include <getopt.h> |
| #include <unistd.h> |
| #include <assert.h> |
| #include <dirent.h> |
| |
| #include <blkid.h> |
| #include <libsmartcols.h> |
| |
| #include "c.h" |
| #include "pathnames.h" |
| #include "nls.h" |
| #include "blkdev.h" |
| #include "strutils.h" |
| #include "xalloc.h" |
| #include "partx.h" |
| #include "sysfs.h" |
| #include "loopdev.h" |
| #include "closestream.h" |
| #include "optutils.h" |
| |
| /* this is the default upper limit, could be modified by --nr */ |
| #define SLICES_MAX 256 |
| |
| /* basic table settings */ |
| enum { |
| PARTX_RAW = (1 << 0), |
| PARTX_NOHEADINGS = (1 << 1), |
| PARTX_EXPORT = (1 << 2), |
| }; |
| |
| /* all the columns (-o option) */ |
| enum { |
| COL_PARTNO, |
| COL_START, |
| COL_END, |
| COL_SECTORS, |
| COL_SIZE, |
| COL_NAME, |
| COL_UUID, |
| COL_TYPE, |
| COL_FLAGS, |
| COL_SCHEME, |
| }; |
| |
| #define ACT_ERROR "--{add,delete,show,list,raw,pairs}" |
| enum { |
| ACT_NONE, |
| ACT_LIST, |
| ACT_SHOW, |
| ACT_ADD, |
| ACT_UPD, |
| ACT_DELETE |
| }; |
| |
| enum { |
| FL_BYTES = (1 << 1) |
| }; |
| |
| /* column names */ |
| struct colinfo { |
| const char *name; /* header */ |
| double whint; /* width hint (N < 1 is in percent of termwidth) */ |
| int flags; /* SCOLS_FL_* */ |
| const char *help; |
| }; |
| |
| /* columns descriptions */ |
| static struct colinfo infos[] = { |
| [COL_PARTNO] = { "NR", 0.25, SCOLS_FL_RIGHT, N_("partition number") }, |
| [COL_START] = { "START", 0.30, SCOLS_FL_RIGHT, N_("start of the partition in sectors") }, |
| [COL_END] = { "END", 0.30, SCOLS_FL_RIGHT, N_("end of the partition in sectors") }, |
| [COL_SECTORS] = { "SECTORS", 0.30, SCOLS_FL_RIGHT, N_("number of sectors") }, |
| [COL_SIZE] = { "SIZE", 0.30, SCOLS_FL_RIGHT, N_("human readable size") }, |
| [COL_NAME] = { "NAME", 0.30, SCOLS_FL_TRUNC, N_("partition name") }, |
| [COL_UUID] = { "UUID", 36, 0, N_("partition UUID")}, |
| [COL_SCHEME] = { "SCHEME", 0.1, SCOLS_FL_TRUNC, N_("partition table type (dos, gpt, ...)")}, |
| [COL_FLAGS] = { "FLAGS", 0.1, SCOLS_FL_TRUNC, N_("partition flags")}, |
| [COL_TYPE] = { "TYPE", 1, SCOLS_FL_RIGHT, N_("partition type (a string, a UUID, or hex)")}, |
| }; |
| |
| #define NCOLS ARRAY_SIZE(infos) |
| |
| /* array with IDs of enabled columns */ |
| static int columns[NCOLS]; |
| static size_t ncolumns; |
| |
| static int verbose; |
| static int partx_flags; |
| static struct loopdev_cxt lc; |
| static int loopdev; |
| |
| static void assoc_loopdev(const char *fname) |
| { |
| int rc; |
| |
| if (loopcxt_init(&lc, 0)) |
| err(EXIT_FAILURE, _("failed to initialize loopcxt")); |
| |
| rc = loopcxt_find_unused(&lc); |
| if (rc) |
| err(EXIT_FAILURE, _("%s: failed to find unused loop device"), |
| fname); |
| |
| if (verbose) |
| printf(_("Trying to use '%s' for the loop device\n"), |
| loopcxt_get_device(&lc)); |
| |
| if (loopcxt_set_backing_file(&lc, fname)) |
| err(EXIT_FAILURE, _("%s: failed to set backing file"), fname); |
| |
| rc = loopcxt_setup_device(&lc); |
| |
| if (rc == -EBUSY) |
| err(EXIT_FAILURE, _("%s: failed to set up loop device"), fname); |
| |
| loopdev = 1; |
| } |
| |
| static inline int get_column_id(int num) |
| { |
| assert(ARRAY_SIZE(columns) == NCOLS); |
| assert((size_t)num < ncolumns); |
| assert(columns[num] < (int) NCOLS); |
| return columns[num]; |
| } |
| |
| static inline struct colinfo *get_column_info(int num) |
| { |
| return &infos[ get_column_id(num) ]; |
| } |
| |
| static int column_name_to_id(const char *name, size_t namesz) |
| { |
| size_t i; |
| |
| assert(name); |
| |
| for (i = 0; i < NCOLS; i++) { |
| const char *cn = infos[i].name; |
| |
| if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) |
| return i; |
| } |
| warnx(_("unknown column: %s"), name); |
| return -1; |
| } |
| |
| /* |
| * Given a partition return the corresponding partition number. |
| * |
| * Note that this function tries to use sysfs, otherwise it assumes that the |
| * last characters are always numeric (sda1, sdc20, etc). |
| */ |
| static int get_partno_from_device(char *partition, dev_t devno) |
| { |
| int partno = 0; |
| size_t sz; |
| char *p, *end = NULL; |
| |
| assert(partition); |
| |
| if (devno) { |
| struct path_cxt *pc; |
| int rc; |
| |
| pc = ul_new_sysfs_path(devno, NULL, NULL); |
| if (!pc) |
| goto err; |
| |
| rc = ul_path_read_s32(pc, &partno, "partition"); |
| ul_unref_path(pc); |
| |
| if (rc == 0) |
| return partno; |
| } |
| |
| sz = strlen(partition); |
| p = partition + sz - 1; |
| |
| if (!isdigit((unsigned char) *p)) |
| goto err; |
| |
| while (isdigit((unsigned char) *(p - 1))) p--; |
| |
| errno = 0; |
| partno = strtol(p, &end, 10); |
| if (errno || !end || *end || p == end) |
| goto err; |
| |
| return partno; |
| err: |
| errx(EXIT_FAILURE, _("%s: failed to get partition number"), partition); |
| } |
| |
| static int get_max_partno(const char *disk, dev_t devno) |
| { |
| char path[PATH_MAX], *parent, *dirname = NULL; |
| struct stat st; |
| DIR *dir; |
| struct dirent *d; |
| int partno = 0; |
| |
| if (!devno && !stat(disk, &st)) |
| devno = st.st_rdev; |
| if (!devno) |
| goto dflt; |
| parent = strrchr(disk, '/'); |
| if (!parent) |
| goto dflt; |
| parent++; |
| |
| snprintf(path, sizeof(path), _PATH_SYS_DEVBLOCK "/%d:%d/", |
| major(devno), minor(devno)); |
| |
| dir = opendir(path); |
| if (!dir) |
| goto dflt; |
| |
| dirname = xstrdup(path); |
| |
| while ((d = readdir(dir))) { |
| int fd; |
| |
| if (!strcmp(d->d_name, ".") || |
| !strcmp(d->d_name, "..")) |
| continue; |
| #ifdef _DIRENT_HAVE_D_TYPE |
| if (d->d_type != DT_DIR && d->d_type != DT_UNKNOWN) |
| continue; |
| #endif |
| if (strncmp(parent, d->d_name, strlen(parent))) |
| continue; |
| snprintf(path, sizeof(path), "%s/partition", d->d_name); |
| |
| fd = openat(dirfd(dir), path, O_RDONLY); |
| if (fd) { |
| int x = 0; |
| FILE *f = fdopen(fd, "r"); |
| if (f) { |
| if (fscanf(f, "%d", &x) == 1 && x > partno) |
| partno = x; |
| fclose(f); |
| } |
| } |
| } |
| |
| free(dirname); |
| closedir(dir); |
| return partno; |
| dflt: |
| return SLICES_MAX; |
| } |
| |
| static int recount_range_by_pt(blkid_partlist ls, int *lower, int *upper) |
| { |
| int n = 0, i, nparts = blkid_partlist_numof_partitions(ls); |
| |
| for (i = 0; i < nparts; i++) { |
| blkid_partition par = blkid_partlist_get_partition(ls, i); |
| int partno = blkid_partition_get_partno(par); |
| n = max(partno, n); |
| } |
| |
| if (*lower < 0) |
| *lower = n + *lower + 1; |
| if (*upper < 0) |
| *upper = n + *upper + 1; |
| |
| if (*lower > *upper && *upper != 0) { |
| warnx(_("specified range <%d:%d> does not make sense"), *lower, *upper); |
| return -EINVAL; |
| } |
| if (verbose) |
| printf(_("range recount: max partno=%d, lower=%d, upper=%d\n"), n, *lower, *upper); |
| return 0; |
| } |
| |
| static void del_parts_warnx(const char *device, int first, int last) |
| { |
| if (first == last) |
| warnx(_("%s: error deleting partition %d"), device, first); |
| else |
| warnx(_("%s: error deleting partitions %d-%d"), |
| device, first, last); |
| } |
| |
| static int del_parts(int fd, const char *device, dev_t devno, |
| int lower, int upper) |
| { |
| int rc = 0, i, errfirst = 0, errlast = 0; |
| |
| assert(fd >= 0); |
| assert(device); |
| |
| /* recount range by information in /sys */ |
| if (!lower) |
| lower = 1; |
| if (!upper || lower < 0 || upper < 0) { |
| int n = get_max_partno(device, devno); |
| if (!upper) |
| upper = n; |
| else if (upper < 0) |
| upper = n + upper + 1; |
| if (lower < 0) |
| lower = n + lower + 1; |
| } |
| if (lower > upper) { |
| warnx(_("specified range <%d:%d> " |
| "does not make sense"), lower, upper); |
| return -1; |
| } |
| |
| for (i = lower; i <= upper; i++) { |
| rc = partx_del_partition(fd, i); |
| if (rc == 0) { |
| if (verbose) |
| printf(_("%s: partition #%d removed\n"), device, i); |
| continue; |
| } else if (errno == ENXIO) { |
| if (verbose) |
| printf(_("%s: partition #%d doesn't exist\n"), device, i); |
| continue; |
| } |
| rc = -1; |
| if (verbose) |
| warn(_("%s: deleting partition #%d failed"), device, i); |
| if (!errfirst) |
| errlast = errfirst = i; |
| else if (errlast + 1 == i) |
| errlast++; |
| else { |
| del_parts_warnx(device, errfirst, errlast); |
| errlast = errfirst = i; |
| } |
| } |
| |
| if (errfirst) |
| del_parts_warnx(device, errfirst, errlast); |
| return rc; |
| } |
| |
| |
| static void add_parts_warnx(const char *device, int first, int last) |
| { |
| if (first == last) |
| warnx(_("%s: error adding partition %d"), device, first); |
| else |
| warnx(_("%s: error adding partitions %d-%d"), |
| device, first, last); |
| } |
| |
| static int add_parts(int fd, const char *device, |
| blkid_partlist ls, int lower, int upper) |
| { |
| int i, nparts, rc, errfirst = 0, errlast = 0; |
| |
| assert(fd >= 0); |
| assert(device); |
| assert(ls); |
| |
| rc = recount_range_by_pt(ls, &lower, &upper); |
| if (rc) |
| return rc; |
| |
| nparts = blkid_partlist_numof_partitions(ls); |
| |
| for (i = 0; i < nparts; i++) { |
| blkid_partition par = blkid_partlist_get_partition(ls, i); |
| int n = blkid_partition_get_partno(par); |
| uintmax_t start, size; |
| |
| if (lower && n < lower) |
| continue; |
| if (upper && n > upper) |
| continue; |
| |
| start = blkid_partition_get_start(par); |
| size = blkid_partition_get_size(par); |
| |
| if (blkid_partition_is_extended(par)) |
| /* |
| * Let's follow the Linux kernel and reduce |
| * DOS extended partition to 1 or 2 sectors. |
| */ |
| size = min(size, (uintmax_t) 2); |
| |
| if (partx_add_partition(fd, n, start, size) == 0) { |
| if (verbose) |
| printf(_("%s: partition #%d added\n"), device, n); |
| continue; |
| } |
| rc = -1; |
| if (verbose) |
| warn(_("%s: adding partition #%d failed"), device, n); |
| if (!errfirst) |
| errlast = errfirst = n; |
| else if (errlast + 1 == n) |
| errlast++; |
| else { |
| add_parts_warnx(device, errfirst, errlast); |
| errlast = errfirst = n; |
| } |
| } |
| |
| if (errfirst) |
| add_parts_warnx(device, errfirst, errlast); |
| |
| /* |
| * The kernel with enabled partitions scanner for loop devices add *all* |
| * partitions, so we should delete any extra, unwanted ones, when the -n |
| * option is passed. |
| */ |
| if (loopdev && loopcxt_is_partscan(&lc) && (lower || upper)) { |
| for (i = 0; i < nparts; i++) { |
| blkid_partition par = blkid_partlist_get_partition(ls, i); |
| int n = blkid_partition_get_partno(par); |
| |
| if (n < lower || n > upper) |
| partx_del_partition(fd, n); |
| } |
| } |
| |
| return rc; |
| } |
| |
| static void upd_parts_warnx(const char *device, int first, int last) |
| { |
| if (first == last) |
| warnx(_("%s: error updating partition %d"), device, first); |
| else |
| warnx(_("%s: error updating partitions %d-%d"), |
| device, first, last); |
| } |
| |
| static int upd_parts(int fd, const char *device, dev_t devno, |
| blkid_partlist ls, int lower, int upper) |
| { |
| int n, nparts, rc = 0, errfirst = 0, errlast = 0, err; |
| blkid_partition par; |
| uintmax_t start, size; |
| |
| assert(fd >= 0); |
| assert(device); |
| assert(ls); |
| |
| /* recount range by information in /sys, if on disk number of |
| * partitions is greater than in /sys the use on-disk limit */ |
| nparts = blkid_partlist_numof_partitions(ls); |
| if (!lower) |
| lower = 1; |
| if (!upper || lower < 0 || upper < 0) { |
| n = get_max_partno(device, devno); |
| if (!upper) |
| upper = n > nparts ? n : nparts; |
| else if (upper < 0) |
| upper = n + upper + 1; |
| if (lower < 0) |
| lower = n + lower + 1; |
| } |
| if (lower > upper) { |
| warnx(_("specified range <%d:%d> " |
| "does not make sense"), lower, upper); |
| return -1; |
| } |
| |
| for (n = lower; n <= upper; n++) { |
| par = blkid_partlist_get_partition_by_partno(ls, n); |
| if (!par) { |
| if (verbose) |
| warn(_("%s: no partition #%d"), device, n); |
| continue; |
| } |
| |
| start = blkid_partition_get_start(par); |
| size = blkid_partition_get_size(par); |
| if (blkid_partition_is_extended(par)) |
| /* |
| * Let's follow the Linux kernel and reduce |
| * DOS extended partition to 1 or 2 sectors. |
| */ |
| size = min(size, (uintmax_t) 2); |
| |
| err = partx_del_partition(fd, n); |
| if (err == -1 && errno == ENXIO) |
| err = 0; /* good, it already doesn't exist */ |
| if (err == -1 && errno == EBUSY) |
| { |
| /* try to resize */ |
| err = partx_resize_partition(fd, n, start, size); |
| if (verbose) |
| printf(_("%s: partition #%d resized\n"), device, n); |
| if (err == 0) |
| continue; |
| } |
| if (err == 0 && partx_add_partition(fd, n, start, size) == 0) { |
| if (verbose) |
| printf(_("%s: partition #%d added\n"), device, n); |
| continue; |
| } |
| |
| if (err == 0) |
| continue; |
| rc = -1; |
| if (verbose) |
| warn(_("%s: updating partition #%d failed"), device, n); |
| if (!errfirst) |
| errlast = errfirst = n; |
| else if (errlast + 1 == n) |
| errlast++; |
| else { |
| upd_parts_warnx(device, errfirst, errlast); |
| errlast = errfirst = n; |
| } |
| } |
| |
| if (errfirst) |
| upd_parts_warnx(device, errfirst, errlast); |
| return rc; |
| } |
| |
| static int list_parts(blkid_partlist ls, int lower, int upper) |
| { |
| int i, nparts, rc; |
| |
| assert(ls); |
| |
| rc = recount_range_by_pt(ls, &lower, &upper); |
| if (rc) |
| return rc; |
| |
| nparts = blkid_partlist_numof_partitions(ls); |
| |
| for (i = 0; i < nparts; i++) { |
| blkid_partition par = blkid_partlist_get_partition(ls, i); |
| int n = blkid_partition_get_partno(par); |
| uintmax_t start, size; |
| |
| if (lower && n < lower) |
| continue; |
| if (upper && n > upper) |
| continue; |
| |
| start = blkid_partition_get_start(par); |
| size = blkid_partition_get_size(par); |
| |
| printf(P_("#%2d: %9ju-%9ju (%9ju sector, %6ju MB)\n", |
| "#%2d: %9ju-%9ju (%9ju sectors, %6ju MB)\n", |
| size), |
| n, start, start + size -1, |
| size, (size << 9) / 1000000); |
| } |
| return 0; |
| } |
| |
| static int add_scols_line(struct libscols_table *table, blkid_partition par) |
| { |
| struct libscols_line *line; |
| int i, rc = 0; |
| |
| assert(table); |
| assert(par); |
| |
| line = scols_table_new_line(table, NULL); |
| if (!line) { |
| warn(_("failed to allocate output line")); |
| return -ENOMEM; |
| } |
| |
| for (i = 0; (size_t)i < ncolumns; i++) { |
| char *str = NULL; /* allocated string */ |
| const char *cstr = NULL; /* foreign string */ |
| |
| switch (get_column_id(i)) { |
| case COL_PARTNO: |
| xasprintf(&str, "%d", blkid_partition_get_partno(par)); |
| break; |
| case COL_START: |
| xasprintf(&str, "%ju", blkid_partition_get_start(par)); |
| break; |
| case COL_END: |
| xasprintf(&str, "%ju", |
| blkid_partition_get_start(par) + |
| blkid_partition_get_size(par) - 1); |
| break; |
| case COL_SECTORS: |
| xasprintf(&str, "%ju", blkid_partition_get_size(par)); |
| break; |
| case COL_SIZE: |
| if (partx_flags & FL_BYTES) |
| xasprintf(&str, "%ju", (uintmax_t) |
| blkid_partition_get_size(par) << 9); |
| else |
| str = size_to_human_string(SIZE_SUFFIX_1LETTER, |
| blkid_partition_get_size(par) << 9); |
| break; |
| case COL_NAME: |
| cstr = blkid_partition_get_name(par); |
| break; |
| case COL_UUID: |
| cstr = blkid_partition_get_uuid(par); |
| break; |
| case COL_TYPE: |
| if (blkid_partition_get_type_string(par)) |
| cstr = blkid_partition_get_type_string(par); |
| else |
| xasprintf(&str, "0x%x", |
| blkid_partition_get_type(par)); |
| break; |
| case COL_FLAGS: |
| xasprintf(&str, "0x%llx", blkid_partition_get_flags(par)); |
| break; |
| case COL_SCHEME: |
| { |
| blkid_parttable tab = blkid_partition_get_table(par); |
| if (tab) |
| cstr = blkid_parttable_get_type(tab); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| if (cstr) |
| rc = scols_line_set_data(line, i, cstr); |
| else if (str) |
| rc = scols_line_refer_data(line, i, str); |
| if (rc) { |
| warn(_("failed to add output data")); |
| break; |
| } |
| } |
| |
| return rc; |
| } |
| |
| static int show_parts(blkid_partlist ls, int scols_flags, int lower, int upper) |
| { |
| int i, rc = -1; |
| struct libscols_table *table; |
| int nparts; |
| |
| assert(ls); |
| |
| nparts = blkid_partlist_numof_partitions(ls); |
| if (!nparts) |
| return 0; |
| |
| scols_init_debug(0); |
| table = scols_new_table(); |
| if (!table) { |
| warn(_("failed to allocate output table")); |
| return -1; |
| } |
| scols_table_enable_raw(table, !!(scols_flags & PARTX_RAW)); |
| scols_table_enable_export(table, !!(scols_flags & PARTX_EXPORT)); |
| scols_table_enable_noheadings(table, !!(scols_flags & PARTX_NOHEADINGS)); |
| |
| for (i = 0; (size_t)i < ncolumns; i++) { |
| struct colinfo *col = get_column_info(i); |
| |
| if (!scols_table_new_column(table, col->name, col->whint, col->flags)) { |
| warnx(_("failed to allocate output column")); |
| goto done; |
| } |
| } |
| |
| rc = recount_range_by_pt(ls, &lower, &upper); |
| if (rc) |
| goto done; |
| |
| for (i = 0; i < nparts; i++) { |
| blkid_partition par = blkid_partlist_get_partition(ls, i); |
| int n = blkid_partition_get_partno(par); |
| |
| if (lower && n < lower) |
| continue; |
| if (upper && n > upper) |
| continue; |
| |
| rc = add_scols_line(table, par); |
| if (rc) |
| break; |
| } |
| |
| rc = 0; |
| scols_print_table(table); |
| done: |
| scols_unref_table(table); |
| return rc; |
| } |
| |
| static blkid_partlist get_partlist(blkid_probe pr, |
| const char *device, char *type) |
| { |
| blkid_partlist ls; |
| blkid_parttable tab; |
| |
| assert(pr); |
| assert(device); |
| |
| if (type) { |
| char *name[] = { type, NULL }; |
| |
| if (blkid_probe_filter_partitions_type(pr, |
| BLKID_FLTR_ONLYIN, name)) { |
| warnx(_("failed to initialize blkid " |
| "filter for '%s'"), type); |
| return NULL; |
| } |
| } |
| |
| ls = blkid_probe_get_partitions(pr); |
| if (!ls) { |
| warnx(_("%s: failed to read partition table"), device); |
| return NULL; |
| } |
| |
| tab = blkid_partlist_get_table(ls); |
| if (verbose && tab) { |
| printf(_("%s: partition table type '%s' detected\n"), |
| device, blkid_parttable_get_type(tab)); |
| |
| if (!blkid_partlist_numof_partitions(ls)) |
| printf(_("%s: partition table with no partitions"), device); |
| } |
| |
| return ls; |
| } |
| |
| static void __attribute__((__noreturn__)) usage(void) |
| { |
| FILE *out = stdout; |
| size_t i; |
| |
| fputs(USAGE_HEADER, out); |
| fprintf(out, |
| _(" %s [-a|-d|-s|-u] [--nr <n:m> | <partition>] <disk>\n"), |
| program_invocation_short_name); |
| |
| fputs(USAGE_SEPARATOR, out); |
| fputs(_("Tell the kernel about the presence and numbering of partitions.\n"), out); |
| |
| fputs(USAGE_OPTIONS, out); |
| fputs(_(" -a, --add add specified partitions or all of them\n"), out); |
| fputs(_(" -d, --delete delete specified partitions or all of them\n"), out); |
| fputs(_(" -u, --update update specified partitions or all of them\n"), out); |
| fputs(_(" -s, --show list partitions\n\n"), out); |
| fputs(_(" -b, --bytes print SIZE in bytes rather than in human readable format\n"), out); |
| fputs(_(" -g, --noheadings don't print headings for --show\n"), out); |
| fputs(_(" -n, --nr <n:m> specify the range of partitions (e.g. --nr 2:4)\n"), out); |
| fputs(_(" -o, --output <list> define which output columns to use\n"), out); |
| fputs(_(" --output-all output all columns\n"), out); |
| fputs(_(" -P, --pairs use key=\"value\" output format\n"), out); |
| fputs(_(" -r, --raw use raw output format\n"), out); |
| fputs(_(" -S, --sector-size <num> overwrite sector size\n"), out); |
| fputs(_(" -t, --type <type> specify the partition type\n"), out); |
| fputs(_(" --list-types list supported partition types and exit\n"), out); |
| fputs(_(" -v, --verbose verbose mode\n"), out); |
| |
| fputs(USAGE_SEPARATOR, out); |
| printf(USAGE_HELP_OPTIONS(22)); |
| |
| fputs(USAGE_COLUMNS, out); |
| for (i = 0; i < NCOLS; i++) |
| fprintf(out, " %10s %s\n", infos[i].name, _(infos[i].help)); |
| |
| printf(USAGE_MAN_TAIL("partx(8)")); |
| |
| exit(EXIT_SUCCESS); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int fd, c, what = ACT_NONE, lower = 0, upper = 0, rc = 0; |
| int scols_flags = 0; |
| char *type = NULL; |
| char *device = NULL; /* pointer to argv[], ie: /dev/sda1 */ |
| char *wholedisk = NULL; /* allocated, ie: /dev/sda */ |
| char *outarg = NULL; |
| dev_t disk_devno = 0, part_devno = 0; |
| unsigned int sector_size = 0; |
| |
| enum { |
| OPT_LIST_TYPES = CHAR_MAX + 1, |
| OPT_OUTPUT_ALL |
| }; |
| static const struct option long_opts[] = { |
| { "bytes", no_argument, NULL, 'b' }, |
| { "noheadings", no_argument, NULL, 'g' }, |
| { "raw", no_argument, NULL, 'r' }, |
| { "list", no_argument, NULL, 'l' }, |
| { "show", no_argument, NULL, 's' }, |
| { "add", no_argument, NULL, 'a' }, |
| { "delete", no_argument, NULL, 'd' }, |
| { "update", no_argument, NULL, 'u' }, |
| { "type", required_argument, NULL, 't' }, |
| { "list-types", no_argument, NULL, OPT_LIST_TYPES }, |
| { "nr", required_argument, NULL, 'n' }, |
| { "output", required_argument, NULL, 'o' }, |
| { "output-all", no_argument, NULL, OPT_OUTPUT_ALL }, |
| { "pairs", no_argument, NULL, 'P' }, |
| { "sector-size",required_argument, NULL, 'S' }, |
| { "help", no_argument, NULL, 'h' }, |
| { "version", no_argument, NULL, 'V' }, |
| { "verbose", no_argument, NULL, 'v' }, |
| { NULL, 0, NULL, 0 } |
| }; |
| |
| static const ul_excl_t excl[] = { /* rows and cols in ASCII order */ |
| { 'P','a','d','l','r','s','u' }, |
| { 0 } |
| }; |
| int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; |
| |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| atexit(close_stdout); |
| |
| while ((c = getopt_long(argc, argv, |
| "abdglrsuvn:t:o:PS:hV", long_opts, NULL)) != -1) { |
| |
| err_exclusive_options(c, long_opts, excl, excl_st); |
| |
| switch(c) { |
| case 'a': |
| what = ACT_ADD; |
| break; |
| case 'b': |
| partx_flags |= FL_BYTES; |
| break; |
| case 'd': |
| what = ACT_DELETE; |
| break; |
| case 'g': |
| scols_flags |= PARTX_NOHEADINGS; |
| break; |
| case 'l': |
| what = ACT_LIST; |
| break; |
| case 'n': |
| if (parse_range(optarg, &lower, &upper, 0)) |
| errx(EXIT_FAILURE, _("failed to parse --nr <M-N> range")); |
| break; |
| case 'o': |
| outarg = optarg; |
| break; |
| case OPT_OUTPUT_ALL: |
| for (ncolumns = 0; ncolumns < ARRAY_SIZE(infos); ncolumns++) |
| columns[ncolumns] = ncolumns; |
| break; |
| case 'P': |
| scols_flags |= PARTX_EXPORT; |
| what = ACT_SHOW; |
| break; |
| case 'r': |
| scols_flags |= PARTX_RAW; |
| what = ACT_SHOW; |
| break; |
| case 's': |
| what = ACT_SHOW; |
| break; |
| case 'S': |
| sector_size = strtou32_or_err(optarg, _("invalid sector size argument")); |
| break; |
| case 't': |
| type = optarg; |
| break; |
| case 'u': |
| what = ACT_UPD; |
| break; |
| case 'v': |
| verbose = 1; |
| break; |
| case OPT_LIST_TYPES: |
| { |
| size_t idx = 0; |
| const char *name = NULL; |
| |
| while (blkid_partitions_get_name(idx++, &name) == 0) |
| puts(name); |
| return EXIT_SUCCESS; |
| } |
| case 'h': |
| usage(); |
| case 'V': |
| printf(UTIL_LINUX_VERSION); |
| return EXIT_SUCCESS; |
| default: |
| errtryhelp(EXIT_FAILURE); |
| } |
| } |
| |
| if (what == ACT_NONE) |
| what = ACT_SHOW; |
| |
| /* --show default, could by modified by -o */ |
| if (what == ACT_SHOW && !ncolumns) { |
| columns[ncolumns++] = COL_PARTNO; |
| columns[ncolumns++] = COL_START; |
| columns[ncolumns++] = COL_END; |
| columns[ncolumns++] = COL_SECTORS; |
| columns[ncolumns++] = COL_SIZE; |
| columns[ncolumns++] = COL_NAME; |
| columns[ncolumns++] = COL_UUID; |
| } |
| |
| if (what == ACT_SHOW && outarg && |
| string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns), |
| &ncolumns, column_name_to_id) < 0) |
| return EXIT_FAILURE; |
| |
| /* |
| * Note that 'partx /dev/sda1' == 'partx /dev/sda1 /dev/sda' |
| * so assume that the device and/or disk are always the last |
| * arguments to be passed to partx. |
| */ |
| if (optind == argc - 2) { |
| /* passed 2 arguments: |
| * /dev/sda1 /dev/sda : partition + whole-disk |
| * -- /dev/sda1 : partition that should be used as a whole-disk |
| */ |
| device = argv[optind]; |
| |
| if (strcmp(device, "-") == 0) { |
| device = NULL; |
| wholedisk = xstrdup(argv[optind + 1]); |
| } else { |
| device = argv[optind]; |
| wholedisk = xstrdup(argv[optind + 1]); |
| |
| if (device && wholedisk && !startswith(device, wholedisk)) |
| errx(EXIT_FAILURE, _("partition and disk name do not match")); |
| } |
| } else if (optind == argc - 1) { |
| /* passed only one arg (ie: /dev/sda3 or /dev/sda) */ |
| struct stat sb; |
| |
| device = argv[optind]; |
| |
| if (stat(device, &sb)) |
| err(EXIT_FAILURE, _("stat of %s failed"), device); |
| |
| part_devno = sb.st_rdev; |
| |
| if (blkid_devno_to_wholedisk(part_devno, |
| NULL, 0, &disk_devno) == 0 && |
| part_devno != disk_devno) |
| wholedisk = blkid_devno_to_devname(disk_devno); |
| |
| if (!wholedisk) { |
| wholedisk = xstrdup(device); |
| disk_devno = part_devno; |
| device = NULL; |
| part_devno = 0; |
| } |
| } else { |
| warnx(_("bad usage")); |
| errtryhelp(EXIT_FAILURE); |
| } |
| if (device && (upper || lower)) |
| errx(EXIT_FAILURE, _("--nr and <partition> are mutually exclusive")); |
| |
| assert(wholedisk); |
| |
| if (device) { |
| /* use partno from given partition instead of --nr range, e.g: |
| * partx -d /dev/sda3 |
| * is the same like: |
| * partx -d --nr 3 /dev/sda |
| */ |
| struct stat sb; |
| |
| if (!part_devno && !stat(device, &sb)) |
| part_devno = sb.st_rdev; |
| |
| lower = upper = get_partno_from_device(device, part_devno); |
| } |
| |
| if (verbose) |
| printf(_("partition: %s, disk: %s, lower: %d, upper: %d\n"), |
| device ? device : "none", wholedisk, lower, upper); |
| |
| if (what == ACT_ADD || what == ACT_DELETE) { |
| struct stat x; |
| |
| if (stat(wholedisk, &x)) |
| errx(EXIT_FAILURE, "%s", wholedisk); |
| |
| if (S_ISREG(x.st_mode)) { |
| /* not a blkdev, try to associate it to a loop device */ |
| if (what == ACT_DELETE) |
| errx(EXIT_FAILURE, _("%s: cannot delete partitions"), |
| wholedisk); |
| if (!loopmod_supports_partscan()) |
| errx(EXIT_FAILURE, _("%s: partitioned loop devices unsupported"), |
| wholedisk); |
| assoc_loopdev(wholedisk); |
| wholedisk = xstrdup(lc.device); |
| } else if (!S_ISBLK(x.st_mode)) |
| errx(EXIT_FAILURE, _("%s: not a block device"), wholedisk); |
| } |
| if ((fd = open(wholedisk, O_RDONLY)) == -1) |
| err(EXIT_FAILURE, _("cannot open %s"), wholedisk); |
| |
| if (what == ACT_DELETE) |
| rc = del_parts(fd, wholedisk, disk_devno, lower, upper); |
| else { |
| blkid_probe pr = blkid_new_probe(); |
| blkid_partlist ls = NULL; |
| |
| if (!pr || blkid_probe_set_device(pr, fd, 0, 0)) |
| warnx(_("%s: failed to initialize blkid prober"), |
| wholedisk); |
| else { |
| if (sector_size) |
| blkid_probe_set_sectorsize(pr, sector_size); |
| |
| ls = get_partlist(pr, wholedisk, type); |
| } |
| |
| if (ls) { |
| switch (what) { |
| case ACT_SHOW: |
| rc = show_parts(ls, scols_flags, lower, upper); |
| break; |
| case ACT_LIST: |
| rc = list_parts(ls, lower, upper); |
| break; |
| case ACT_ADD: |
| rc = add_parts(fd, wholedisk, ls, lower, upper); |
| break; |
| case ACT_UPD: |
| rc = upd_parts(fd, wholedisk, disk_devno, ls, lower, upper); |
| break; |
| case ACT_NONE: |
| break; |
| default: |
| abort(); |
| } |
| } else |
| rc = 1; |
| |
| blkid_free_probe(pr); |
| } |
| |
| if (loopdev) |
| loopcxt_deinit(&lc); |
| |
| if (close_fd(fd) != 0) |
| err(EXIT_FAILURE, _("write failed")); |
| |
| return rc ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |