/* * lsblk(8) - list block devices * * Copyright (C) 2010,2011,2012 Red Hat, Inc. All rights reserved. * Written by Milan Broz * Karel Zak * * 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; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it would be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_LIBUDEV #include #endif #include #include "c.h" #include "pathnames.h" #include "blkdev.h" #include "canonicalize.h" #include "nls.h" #include "xalloc.h" #include "strutils.h" #include "sysfs.h" #include "closestream.h" #include "mangle.h" #include "optutils.h" #include "debug.h" static UL_DEBUG_DEFINE_MASK(lsblk); UL_DEBUG_DEFINE_MASKNAMES(lsblk) = UL_DEBUG_EMPTY_MASKNAMES; #define LSBLK_DEBUG_INIT (1 << 1) #define LSBLK_DEBUG_FILTER (1 << 2) #define LSBLK_DEBUG_DEV (1 << 3) #define LSBLK_DEBUG_CXT (1 << 4) #define LSBLK_DEBUG_ALL 0xFFFF #define DBG(m, x) __UL_DBG(lsblk, LSBLK_DEBUG_, m, x) #define ON_DBG(m, x) __UL_DBG_CALL(lsblk, LSBLK_DEBUG_, m, x) #define UL_DEBUG_CURRENT_MASK UL_DEBUG_MASK(lsblk) #include "debugobj.h" #define LSBLK_EXIT_SOMEOK 64 #define LSBLK_EXIT_ALLFAILED 32 static int column_id_to_number(int id); /* column IDs */ enum { COL_NAME = 0, COL_KNAME, COL_MAJMIN, COL_FSTYPE, COL_TARGET, COL_LABEL, COL_UUID, COL_PARTTYPE, COL_PARTLABEL, COL_PARTUUID, COL_PARTFLAGS, COL_RA, COL_RO, COL_RM, COL_HOTPLUG, COL_MODEL, COL_SERIAL, COL_SIZE, COL_STATE, COL_OWNER, COL_GROUP, COL_MODE, COL_ALIOFF, COL_MINIO, COL_OPTIO, COL_PHYSEC, COL_LOGSEC, COL_ROTA, COL_SCHED, COL_RQ_SIZE, COL_TYPE, COL_DALIGN, COL_DGRAN, COL_DMAX, COL_DZERO, COL_WSAME, COL_WWN, COL_RAND, COL_PKNAME, COL_HCTL, COL_TRANSPORT, COL_SUBSYS, COL_REV, COL_VENDOR, COL_ZONED, }; /* basic table settings */ enum { LSBLK_ASCII = (1 << 0), LSBLK_RAW = (1 << 1), LSBLK_NOHEADINGS = (1 << 2), LSBLK_EXPORT = (1 << 3), LSBLK_TREE = (1 << 4), LSBLK_JSON = (1 << 5), }; enum { SORT_STRING = 0, /* default is to use scols_cell_get_data() */ SORT_U64 = 1 /* use private pointer from scols_cell_get_userdata() */ }; /* 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; int sort_type; /* SORT_* */ }; /* columns descriptions */ static struct colinfo infos[] = { [COL_NAME] = { "NAME", 0.25, SCOLS_FL_TREE | SCOLS_FL_NOEXTREMES, N_("device name") }, [COL_KNAME] = { "KNAME", 0.3, 0, N_("internal kernel device name") }, [COL_PKNAME] = { "PKNAME", 0.3, 0, N_("internal parent kernel device name") }, [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number"), SORT_U64 }, [COL_FSTYPE] = { "FSTYPE", 0.1, SCOLS_FL_TRUNC, N_("filesystem type") }, [COL_TARGET] = { "MOUNTPOINT", 0.10, SCOLS_FL_TRUNC, N_("where the device is mounted") }, [COL_LABEL] = { "LABEL", 0.1, 0, N_("filesystem LABEL") }, [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") }, [COL_PARTTYPE] = { "PARTTYPE", 36, 0, N_("partition type UUID") }, [COL_PARTLABEL] = { "PARTLABEL", 0.1, 0, N_("partition LABEL") }, [COL_PARTUUID] = { "PARTUUID", 36, 0, N_("partition UUID") }, [COL_PARTFLAGS] = { "PARTFLAGS", 36, 0, N_("partition flags") }, [COL_RA] = { "RA", 3, SCOLS_FL_RIGHT, N_("read-ahead of the device"), SORT_U64 }, [COL_RO] = { "RO", 1, SCOLS_FL_RIGHT, N_("read-only device") }, [COL_RM] = { "RM", 1, SCOLS_FL_RIGHT, N_("removable device") }, [COL_HOTPLUG]= { "HOTPLUG", 1, SCOLS_FL_RIGHT, N_("removable or hotplug device (usb, pcmcia, ...)") }, [COL_ROTA] = { "ROTA", 1, SCOLS_FL_RIGHT, N_("rotational device") }, [COL_RAND] = { "RAND", 1, SCOLS_FL_RIGHT, N_("adds randomness") }, [COL_MODEL] = { "MODEL", 0.1, SCOLS_FL_TRUNC, N_("device identifier") }, [COL_SERIAL] = { "SERIAL", 0.1, SCOLS_FL_TRUNC, N_("disk serial number") }, [COL_SIZE] = { "SIZE", 5, SCOLS_FL_RIGHT, N_("size of the device"), SORT_U64 }, [COL_STATE] = { "STATE", 7, SCOLS_FL_TRUNC, N_("state of the device") }, [COL_OWNER] = { "OWNER", 0.1, SCOLS_FL_TRUNC, N_("user name"), }, [COL_GROUP] = { "GROUP", 0.1, SCOLS_FL_TRUNC, N_("group name") }, [COL_MODE] = { "MODE", 10, 0, N_("device node permissions") }, [COL_ALIOFF] = { "ALIGNMENT", 6, SCOLS_FL_RIGHT, N_("alignment offset"), SORT_U64 }, [COL_MINIO] = { "MIN-IO", 6, SCOLS_FL_RIGHT, N_("minimum I/O size"), SORT_U64 }, [COL_OPTIO] = { "OPT-IO", 6, SCOLS_FL_RIGHT, N_("optimal I/O size"), SORT_U64 }, [COL_PHYSEC] = { "PHY-SEC", 7, SCOLS_FL_RIGHT, N_("physical sector size"), SORT_U64 }, [COL_LOGSEC] = { "LOG-SEC", 7, SCOLS_FL_RIGHT, N_("logical sector size"), SORT_U64 }, [COL_SCHED] = { "SCHED", 0.1, 0, N_("I/O scheduler name") }, [COL_RQ_SIZE]= { "RQ-SIZE", 5, SCOLS_FL_RIGHT, N_("request queue size"), SORT_U64 }, [COL_TYPE] = { "TYPE", 4, 0, N_("device type") }, [COL_DALIGN] = { "DISC-ALN", 6, SCOLS_FL_RIGHT, N_("discard alignment offset"), SORT_U64 }, [COL_DGRAN] = { "DISC-GRAN", 6, SCOLS_FL_RIGHT, N_("discard granularity"), SORT_U64 }, [COL_DMAX] = { "DISC-MAX", 6, SCOLS_FL_RIGHT, N_("discard max bytes"), SORT_U64 }, [COL_DZERO] = { "DISC-ZERO", 1, SCOLS_FL_RIGHT, N_("discard zeroes data") }, [COL_WSAME] = { "WSAME", 6, SCOLS_FL_RIGHT, N_("write same max bytes"), SORT_U64 }, [COL_WWN] = { "WWN", 18, 0, N_("unique storage identifier") }, [COL_HCTL] = { "HCTL", 10, 0, N_("Host:Channel:Target:Lun for SCSI") }, [COL_TRANSPORT] = { "TRAN", 6, 0, N_("device transport type") }, [COL_SUBSYS] = { "SUBSYSTEMS", 0.1, SCOLS_FL_NOEXTREMES, N_("de-duplicated chain of subsystems") }, [COL_REV] = { "REV", 4, SCOLS_FL_RIGHT, N_("device revision") }, [COL_VENDOR] = { "VENDOR", 0.1, SCOLS_FL_TRUNC, N_("device vendor") }, [COL_ZONED] = { "ZONED", 0.3, 0, N_("zone model") }, }; struct lsblk { struct libscols_table *table; /* output table */ struct libscols_column *sort_col;/* sort output by this column */ int sort_id; int flags; /* LSBLK_* */ unsigned int all_devices:1; /* print all devices, including empty */ unsigned int bytes:1; /* print SIZE in bytes */ unsigned int inverse:1; /* print inverse dependencies */ unsigned int nodeps:1; /* don't print slaves/holders */ unsigned int scsi:1; /* print only device with HCTL (SCSI) */ unsigned int paths:1; /* print devnames with "/dev" prefix */ unsigned int sort_hidden:1; /* sort column not between output columns */ unsigned int force_tree_order:1;/* sort lines by parent->tree relation */ }; static struct lsblk *lsblk; /* global handler */ /* columns[] array specifies all currently wanted output column. The columns * are defined by infos[] array and you can specify (on command line) each * column twice. That's enough, dynamically allocated array of the columns is * unnecessary overkill and over-engineering in this case */ static int columns[ARRAY_SIZE(infos) * 2]; static size_t ncolumns; static inline void add_column(int id) { if (ncolumns >= ARRAY_SIZE(columns)) errx(EXIT_FAILURE, _("too many columns specified, " "the limit is %zu columns"), ARRAY_SIZE(columns) - 1); columns[ ncolumns++ ] = id; } static inline void add_uniq_column(int id) { if (column_id_to_number(id) < 0) add_column(id); } static int excludes[256]; static size_t nexcludes; static int includes[256]; static size_t nincludes; static struct libmnt_table *mtab, *swaps; static struct libmnt_cache *mntcache; #ifdef HAVE_LIBUDEV static struct udev *udev; #endif struct blkdev_cxt { struct blkdev_cxt *parent; struct libscols_line *scols_line; struct stat st; char *name; /* kernel name in /sys/block */ char *dm_name; /* DM name (dm/block) */ char *filename; /* path to device node */ struct sysfs_cxt sysfs; int partition; /* is partition? TRUE/FALSE */ int probed; /* already probed */ char *fstype; /* detected fs, NULL or "?" if cannot detect */ char *uuid; /* filesystem UUID (or stack uuid) */ char *label; /* filesystem label */ char *parttype; /* partition type UUID */ char *partuuid; /* partition UUID */ char *partlabel; /* partition label */ char *partflags; /* partition flags */ char *wwn; /* storage WWN */ char *serial; /* disk serial number */ int npartitions; /* # of partitions this device has */ int nholders; /* # of devices mapped directly to this device * /sys/block/.../holders */ int nslaves; /* # of devices this device maps to */ int maj, min; /* devno */ int discard; /* supports discard */ uint64_t size; /* device size */ }; static void lsblk_init_debug(void) { __UL_INIT_DEBUG_FROM_ENV(lsblk, LSBLK_DEBUG_, 0, LSBLK_DEBUG); } static int is_maj_excluded(int maj) { size_t i; assert(ARRAY_SIZE(excludes) > nexcludes); if (!nexcludes) return 0; /* filter not enabled, device not excluded */ for (i = 0; i < nexcludes; i++) { if (excludes[i] == maj) { DBG(FILTER, ul_debug("exclude: maj=%d", maj)); return 1; } } return 0; } static int is_maj_included(int maj) { size_t i; assert(ARRAY_SIZE(includes) > nincludes); if (!nincludes) return 1; /* filter not enabled, device is included */ for (i = 0; i < nincludes; i++) { if (includes[i] == maj) { DBG(FILTER, ul_debug("include: maj=%d", maj)); return 1; } } return 0; } /* array with IDs of enabled columns */ static int get_column_id(int num) { assert(num >= 0); assert((size_t) num < ncolumns); assert(columns[num] < (int) ARRAY_SIZE(infos)); return columns[num]; } static 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; for (i = 0; i < ARRAY_SIZE(infos); i++) { const char *cn = infos[i].name; if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) return i; } warnx(_("unknown column: %s"), name); return -1; } static int column_id_to_number(int id) { size_t i; for (i = 0; i < ncolumns; i++) if (columns[i] == id) return i; return -1; } static void reset_blkdev_cxt(struct blkdev_cxt *cxt) { if (!cxt) return; DBG(CXT, ul_debugobj(cxt, "reset")); free(cxt->name); free(cxt->dm_name); free(cxt->filename); free(cxt->fstype); free(cxt->uuid); free(cxt->label); free(cxt->parttype); free(cxt->partuuid); free(cxt->partlabel); free(cxt->wwn); free(cxt->serial); sysfs_deinit(&cxt->sysfs); memset(cxt, 0, sizeof(*cxt)); } static int is_dm(const char *name) { return strncmp(name, "dm-", 3) ? 0 : 1; } static struct dirent *xreaddir(DIR *dp) { struct dirent *d; assert(dp); while ((d = readdir(dp))) { if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) continue; /* blacklist here? */ break; } return d; } static char *get_device_path(struct blkdev_cxt *cxt) { char path[PATH_MAX]; assert(cxt); assert(cxt->name); if (is_dm(cxt->name)) return canonicalize_dm_name(cxt->name); snprintf(path, sizeof(path), "/dev/%s", cxt->name); sysfs_devname_sys_to_dev(path); return xstrdup(path); } static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)), const char *filename, int line) { if (filename) warnx(_("%s: parse error at line %d -- ignored"), filename, line); return 1; } static int is_active_swap(const char *filename) { if (!swaps) { swaps = mnt_new_table(); if (!swaps) return 0; if (!mntcache) mntcache = mnt_new_cache(); mnt_table_set_parser_errcb(swaps, table_parser_errcb); mnt_table_set_cache(swaps, mntcache); mnt_table_parse_swaps(swaps, NULL); } return mnt_table_find_srcpath(swaps, filename, MNT_ITER_BACKWARD) != NULL; } static char *get_device_mountpoint(struct blkdev_cxt *cxt) { struct libmnt_fs *fs; const char *fsroot; assert(cxt); assert(cxt->filename); if (!mtab) { mtab = mnt_new_table(); if (!mtab) return NULL; if (!mntcache) mntcache = mnt_new_cache(); mnt_table_set_parser_errcb(mtab, table_parser_errcb); mnt_table_set_cache(mtab, mntcache); mnt_table_parse_mtab(mtab, NULL); } /* Note that maj:min in /proc/self/mountinfo does not have to match with * devno as returned by stat(), so we have to try devname too */ fs = mnt_table_find_devno(mtab, makedev(cxt->maj, cxt->min), MNT_ITER_BACKWARD); if (!fs) fs = mnt_table_find_srcpath(mtab, cxt->filename, MNT_ITER_BACKWARD); if (!fs) return is_active_swap(cxt->filename) ? xstrdup("[SWAP]") : NULL; /* found */ fsroot = mnt_fs_get_root(fs); if (fsroot && strcmp(fsroot, "/") != 0) { /* hmm.. we found bind mount or btrfs subvolume, let's try to * get real FS root mountpoint */ struct libmnt_fs *rfs; struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_BACKWARD); mnt_table_set_iter(mtab, itr, fs); while (mnt_table_next_fs(mtab, itr, &rfs) == 0) { fsroot = mnt_fs_get_root(rfs); if ((!fsroot || strcmp(fsroot, "/") == 0) && mnt_fs_match_source(rfs, cxt->filename, mntcache)) { fs = rfs; break; } } mnt_free_iter(itr); } DBG(DEV, ul_debugobj(cxt, "mountpoint: %s", mnt_fs_get_target(fs))); return xstrdup(mnt_fs_get_target(fs)); } #ifndef HAVE_LIBUDEV static int get_udev_properties(struct blkdev_cxt *cxt __attribute__((__unused__))) { return -1; } #else static int get_udev_properties(struct blkdev_cxt *cxt) { struct udev_device *dev; if (cxt->probed) return 0; /* already done */ if (!udev) udev = udev_new(); if (!udev) return -1; dev = udev_device_new_from_subsystem_sysname(udev, "block", cxt->name); if (dev) { const char *data; if ((data = udev_device_get_property_value(dev, "ID_FS_LABEL_ENC"))) { cxt->label = xstrdup(data); unhexmangle_string(cxt->label); } if ((data = udev_device_get_property_value(dev, "ID_FS_UUID_ENC"))) { cxt->uuid = xstrdup(data); unhexmangle_string(cxt->uuid); } if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_NAME"))) { cxt->partlabel = xstrdup(data); unhexmangle_string(cxt->partlabel); } if ((data = udev_device_get_property_value(dev, "ID_FS_TYPE"))) cxt->fstype = xstrdup(data); if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_TYPE"))) cxt->parttype = xstrdup(data); if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_UUID"))) cxt->partuuid = xstrdup(data); if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_FLAGS"))) cxt->partflags = xstrdup(data); data = udev_device_get_property_value(dev, "ID_WWN_WITH_EXTENSION"); if (!data) data = udev_device_get_property_value(dev, "ID_WWN"); if (data) cxt->wwn = xstrdup(data); if ((data = udev_device_get_property_value(dev, "ID_SERIAL_SHORT"))) cxt->serial = xstrdup(data); udev_device_unref(dev); cxt->probed = 1; DBG(DEV, ul_debugobj(cxt, "%s: found udev properties", cxt->name)); } return cxt->probed == 1 ? 0 : -1; } #endif /* HAVE_LIBUDEV */ static void probe_device(struct blkdev_cxt *cxt) { blkid_probe pr = NULL; if (cxt->probed) return; if (!cxt->size) return; /* try udev DB */ if (get_udev_properties(cxt) == 0) return; /* success */ cxt->probed = 1; /* try libblkid (fallback) */ if (getuid() != 0) return; /* no permissions to read from the device */ pr = blkid_new_probe_from_filename(cxt->filename); if (!pr) return; blkid_probe_enable_superblocks(pr, 1); blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID | BLKID_SUBLKS_TYPE); blkid_probe_enable_partitions(pr, 1); blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS); if (!blkid_do_safeprobe(pr)) { const char *data = NULL; if (!blkid_probe_lookup_value(pr, "TYPE", &data, NULL)) cxt->fstype = xstrdup(data); if (!blkid_probe_lookup_value(pr, "UUID", &data, NULL)) cxt->uuid = xstrdup(data); if (!blkid_probe_lookup_value(pr, "LABEL", &data, NULL)) cxt->label = xstrdup(data); if (!blkid_probe_lookup_value(pr, "PART_ENTRY_TYPE", &data, NULL)) cxt->parttype = xstrdup(data); if (!blkid_probe_lookup_value(pr, "PART_ENTRY_UUID", &data, NULL)) cxt->partuuid = xstrdup(data); if (!blkid_probe_lookup_value(pr, "PART_ENTRY_NAME", &data, NULL)) cxt->partlabel = xstrdup(data); if (!blkid_probe_lookup_value(pr, "PART_ENTRY_FLAGS", &data, NULL)) cxt->partflags = xstrdup(data); DBG(DEV, ul_debugobj(cxt, "%s: found blkid properties", cxt->name)); } blkid_free_probe(pr); return; } static int is_readonly_device(struct blkdev_cxt *cxt) { int fd, ro = 0; if (sysfs_scanf(&cxt->sysfs, "ro", "%d", &ro) == 1) return ro; /* fallback if "ro" attribute does not exist */ fd = open(cxt->filename, O_RDONLY); if (fd != -1) { if (ioctl(fd, BLKROGET, &ro) != 0) ro = 0; close(fd); } return ro; } static char *get_scheduler(struct blkdev_cxt *cxt) { char *str = sysfs_strdup(&cxt->sysfs, "queue/scheduler"); char *p, *res = NULL; if (!str) return NULL; p = strchr(str, '['); if (p) { res = p + 1; p = strchr(res, ']'); if (p) { *p = '\0'; res = xstrdup(res); } else res = NULL; } free(str); return res; } static char *get_type(struct blkdev_cxt *cxt) { char *res = NULL, *p; if (is_dm(cxt->name)) { char *dm_uuid = sysfs_strdup(&cxt->sysfs, "dm/uuid"); /* The DM_UUID prefix should be set to subsystem owning * the device - LVM, CRYPT, DMRAID, MPATH, PART */ if (dm_uuid) { char *tmp = dm_uuid; char *dm_uuid_prefix = strsep(&tmp, "-"); if (dm_uuid_prefix) { /* kpartx hack to remove partition number */ if (strncasecmp(dm_uuid_prefix, "part", 4) == 0) dm_uuid_prefix[4] = '\0'; res = xstrdup(dm_uuid_prefix); } } free(dm_uuid); if (!res) /* No UUID or no prefix - just mark it as DM device */ res = xstrdup("dm"); } else if (!strncmp(cxt->name, "loop", 4)) { res = xstrdup("loop"); } else if (!strncmp(cxt->name, "md", 2)) { char *md_level = sysfs_strdup(&cxt->sysfs, "md/level"); res = md_level ? md_level : xstrdup("md"); } else { const char *type = NULL; int x = 0; if (!sysfs_read_int(&cxt->sysfs, "device/type", &x)) type = blkdev_scsi_type_to_name(x); if (!type) type = cxt->partition ? "part" : "disk"; res = xstrdup(type); } for (p = res; p && *p; p++) *p = tolower((unsigned char) *p); return res; } /* Thanks to lsscsi code for idea of detection logic used here */ static char *get_transport(struct blkdev_cxt *cxt) { struct sysfs_cxt *sysfs = &cxt->sysfs; char *attr = NULL; const char *trans = NULL; /* SCSI - Serial Peripheral Interface */ if (sysfs_scsi_host_is(sysfs, "spi")) trans = "spi"; /* FC/FCoE - Fibre Channel / Fibre Channel over Ethernet */ else if (sysfs_scsi_host_is(sysfs, "fc")) { attr = sysfs_scsi_host_strdup_attribute(sysfs, "fc", "symbolic_name"); if (!attr) return NULL; trans = strstr(attr, " over ") ? "fcoe" : "fc"; free(attr); } /* SAS - Serial Attached SCSI */ else if (sysfs_scsi_host_is(sysfs, "sas") || sysfs_scsi_has_attribute(sysfs, "sas_device")) trans = "sas"; /* SBP - Serial Bus Protocol (FireWire) */ else if (sysfs_scsi_has_attribute(sysfs, "ieee1394_id")) trans = "sbp"; /* iSCSI */ else if (sysfs_scsi_host_is(sysfs, "iscsi")) trans ="iscsi"; /* USB - Universal Serial Bus */ else if (sysfs_scsi_path_contains(sysfs, "usb")) trans = "usb"; /* ATA, SATA */ else if (sysfs_scsi_host_is(sysfs, "scsi")) { attr = sysfs_scsi_host_strdup_attribute(sysfs, "scsi", "proc_name"); if (!attr) return NULL; if (!strncmp(attr, "ahci", 4) || !strncmp(attr, "sata", 4)) trans = "sata"; else if (strstr(attr, "ata")) trans = "ata"; free(attr); } else if (strncmp(cxt->name, "nvme", 4) == 0) trans = "nvme"; return trans ? xstrdup(trans) : NULL; } static char *get_subsystems(struct blkdev_cxt *cxt) { char path[PATH_MAX]; char *sub, *chain, *res = NULL; size_t len = 0, last = 0; chain = sysfs_get_devchain(&cxt->sysfs, path, sizeof(path)); if (!chain) return NULL; while (sysfs_next_subsystem(&cxt->sysfs, chain, &sub) == 0) { size_t sz; /* don't create "block:scsi:scsi", but "block:scsi" */ if (len && strcmp(res + last, sub) == 0) { free(sub); continue; } sz = strlen(sub); res = xrealloc(res, len + sz + 2); if (len) res[len++] = ':'; memcpy(res + len, sub, sz + 1); last = len; len += sz; free(sub); } return res; } #define is_parsable(_l) (scols_table_is_raw((_l)->table) || \ scols_table_is_export((_l)->table) || \ scols_table_is_json((_l)->table)) static char *mk_name(const char *name) { char *p; if (!name) return NULL; if (lsblk->paths) xasprintf(&p, "/dev/%s", name); else p = xstrdup(name); if (p) sysfs_devname_sys_to_dev(p); return p; } static char *mk_dm_name(const char *name) { char *p; if (!name) return NULL; if (lsblk->paths) xasprintf(&p, "/dev/mapper/%s", name); else p = xstrdup(name); return p; } /* stores data to scols cell userdata (invisible and independent on output) * to make the original values accessible for sort functions */ static void set_sortdata_u64(struct libscols_line *ln, int col, uint64_t x) { struct libscols_cell *ce = scols_line_get_cell(ln, col); uint64_t *data; if (!ce) return; data = xmalloc(sizeof(uint64_t)); *data = x; scols_cell_set_userdata(ce, data); } static void set_sortdata_u64_from_string(struct libscols_line *ln, int col, const char *str) { uint64_t x; if (!str || sscanf(str, "%"SCNu64, &x) != 1) return; set_sortdata_u64(ln, col, x); } static void unref_sortdata(struct libscols_table *tb) { struct libscols_iter *itr; struct libscols_line *ln; if (!tb || !lsblk->sort_col) return; itr = scols_new_iter(SCOLS_ITER_FORWARD); if (!itr) return; while (scols_table_next_line(tb, itr, &ln) == 0) { struct libscols_cell *ce = scols_line_get_column_cell(ln, lsblk->sort_col); void *data = scols_cell_get_userdata(ce); free(data); } scols_free_iter(itr); } static void set_scols_data(struct blkdev_cxt *cxt, int col, int id, struct libscols_line *ln) { int sort = 0, st_rc = 0; char *str = NULL; if (!cxt->st.st_rdev && (id == COL_OWNER || id == COL_GROUP || id == COL_MODE)) st_rc = stat(cxt->filename, &cxt->st); if (lsblk->sort_id == id) sort = 1; switch(id) { case COL_NAME: str = cxt->dm_name ? mk_dm_name(cxt->dm_name) : mk_name(cxt->name); break; case COL_KNAME: str = mk_name(cxt->name); break; case COL_PKNAME: if (cxt->parent) str = mk_name(cxt->parent->name); break; case COL_OWNER: { struct passwd *pw = st_rc ? NULL : getpwuid(cxt->st.st_uid); if (pw) str = xstrdup(pw->pw_name); break; } case COL_GROUP: { struct group *gr = st_rc ? NULL : getgrgid(cxt->st.st_gid); if (gr) str = xstrdup(gr->gr_name); break; } case COL_MODE: { char md[11]; if (!st_rc) { xstrmode(cxt->st.st_mode, md); str = xstrdup(md); } break; } case COL_MAJMIN: if (is_parsable(lsblk)) xasprintf(&str, "%u:%u", cxt->maj, cxt->min); else xasprintf(&str, "%3u:%-3u", cxt->maj, cxt->min); if (sort) set_sortdata_u64(ln, col, makedev(cxt->maj, cxt->min)); break; case COL_FSTYPE: probe_device(cxt); if (cxt->fstype) str = xstrdup(cxt->fstype); break; case COL_TARGET: str = get_device_mountpoint(cxt); break; case COL_LABEL: probe_device(cxt); if (cxt->label) str = xstrdup(cxt->label); break; case COL_UUID: probe_device(cxt); if (cxt->uuid) str = xstrdup(cxt->uuid); break; case COL_PARTTYPE: probe_device(cxt); if (cxt->parttype) str = xstrdup(cxt->parttype); break; case COL_PARTLABEL: probe_device(cxt); if (cxt->partlabel) str = xstrdup(cxt->partlabel); break; case COL_PARTUUID: probe_device(cxt); if (cxt->partuuid) str = xstrdup(cxt->partuuid); break; case COL_PARTFLAGS: probe_device(cxt); if (cxt->partflags) str = xstrdup(cxt->partflags); break; case COL_WWN: get_udev_properties(cxt); if (cxt->wwn) str = xstrdup(cxt->wwn); break; case COL_RA: str = sysfs_strdup(&cxt->sysfs, "queue/read_ahead_kb"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_RO: str = xstrdup(is_readonly_device(cxt) ? "1" : "0"); break; case COL_RM: str = sysfs_strdup(&cxt->sysfs, "removable"); if (!str && cxt->sysfs.parent) str = sysfs_strdup(cxt->sysfs.parent, "removable"); break; case COL_HOTPLUG: str = sysfs_is_hotpluggable(&cxt->sysfs) ? xstrdup("1") : xstrdup("0"); break; case COL_ROTA: str = sysfs_strdup(&cxt->sysfs, "queue/rotational"); break; case COL_RAND: str = sysfs_strdup(&cxt->sysfs, "queue/add_random"); break; case COL_MODEL: if (!cxt->partition && cxt->nslaves == 0) str = sysfs_strdup(&cxt->sysfs, "device/model"); break; case COL_SERIAL: if (!cxt->partition && cxt->nslaves == 0) { get_udev_properties(cxt); if (cxt->serial) str = xstrdup(cxt->serial); else str = sysfs_strdup(&cxt->sysfs, "device/serial"); } break; case COL_REV: if (!cxt->partition && cxt->nslaves == 0) str = sysfs_strdup(&cxt->sysfs, "device/rev"); break; case COL_VENDOR: if (!cxt->partition && cxt->nslaves == 0) str = sysfs_strdup(&cxt->sysfs, "device/vendor"); break; case COL_SIZE: if (!cxt->size) break; if (lsblk->bytes) xasprintf(&str, "%ju", cxt->size); else str = size_to_human_string(SIZE_SUFFIX_1LETTER, cxt->size); if (sort) set_sortdata_u64(ln, col, cxt->size); break; case COL_STATE: if (!cxt->partition && !cxt->dm_name) str = sysfs_strdup(&cxt->sysfs, "device/state"); else if (cxt->dm_name) { int x = 0; if (sysfs_read_int(&cxt->sysfs, "dm/suspended", &x) == 0) str = xstrdup(x ? "suspended" : "running"); } break; case COL_ALIOFF: str = sysfs_strdup(&cxt->sysfs, "alignment_offset"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_MINIO: str = sysfs_strdup(&cxt->sysfs, "queue/minimum_io_size"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_OPTIO: str = sysfs_strdup(&cxt->sysfs, "queue/optimal_io_size"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_PHYSEC: str = sysfs_strdup(&cxt->sysfs, "queue/physical_block_size"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_LOGSEC: str = sysfs_strdup(&cxt->sysfs, "queue/logical_block_size"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_SCHED: str = get_scheduler(cxt); break; case COL_RQ_SIZE: str = sysfs_strdup(&cxt->sysfs, "queue/nr_requests"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_TYPE: str = get_type(cxt); break; case COL_HCTL: { int h, c, t, l; if (sysfs_scsi_get_hctl(&cxt->sysfs, &h, &c, &t, &l) == 0) xasprintf(&str, "%d:%d:%d:%d", h, c, t, l); break; } case COL_TRANSPORT: str = get_transport(cxt); break; case COL_SUBSYS: str = get_subsystems(cxt); break; case COL_DALIGN: if (cxt->discard) str = sysfs_strdup(&cxt->sysfs, "discard_alignment"); if (!str) str = xstrdup("0"); if (sort) set_sortdata_u64_from_string(ln, col, str); break; case COL_DGRAN: if (lsblk->bytes) { str = sysfs_strdup(&cxt->sysfs, "queue/discard_granularity"); if (sort) set_sortdata_u64_from_string(ln, col, str); } else { uint64_t x; if (sysfs_read_u64(&cxt->sysfs, "queue/discard_granularity", &x) == 0) { str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sort) set_sortdata_u64(ln, col, x); } } break; case COL_DMAX: if (lsblk->bytes) { str = sysfs_strdup(&cxt->sysfs, "queue/discard_max_bytes"); if (sort) set_sortdata_u64_from_string(ln, col, str); } else { uint64_t x; if (sysfs_read_u64(&cxt->sysfs, "queue/discard_max_bytes", &x) == 0) { str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sort) set_sortdata_u64(ln, col, x); } } break; case COL_DZERO: if (cxt->discard) str = sysfs_strdup(&cxt->sysfs, "queue/discard_zeroes_data"); if (!str) str = xstrdup("0"); break; case COL_WSAME: if (lsblk->bytes) { str = sysfs_strdup(&cxt->sysfs, "queue/write_same_max_bytes"); if (sort) set_sortdata_u64_from_string(ln, col, str); } else { uint64_t x; if (sysfs_read_u64(&cxt->sysfs, "queue/write_same_max_bytes", &x) == 0) { str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sort) set_sortdata_u64(ln, col, x); } } if (!str) str = xstrdup("0"); break; case COL_ZONED: str = sysfs_strdup(&cxt->sysfs, "queue/zoned"); break; }; if (str && scols_line_refer_data(ln, col, str)) err(EXIT_FAILURE, _("failed to add output data")); } static void fill_table_line(struct blkdev_cxt *cxt, struct libscols_line *scols_parent) { size_t i; cxt->scols_line = scols_table_new_line(lsblk->table, scols_parent); if (!cxt->scols_line) err(EXIT_FAILURE, _("failed to allocate output line")); for (i = 0; i < ncolumns; i++) set_scols_data(cxt, i, get_column_id(i), cxt->scols_line); } static int set_cxt(struct blkdev_cxt *cxt, struct blkdev_cxt *parent, struct blkdev_cxt *wholedisk, const char *name) { dev_t devno; DBG(CXT, ul_debugobj(cxt, "setting context for %s [parent=%p, wholedisk=%p]", name, parent, wholedisk)); cxt->parent = parent; cxt->name = xstrdup(name); cxt->partition = wholedisk != NULL; cxt->filename = get_device_path(cxt); if (!cxt->filename) { DBG(CXT, ul_debugobj(cxt, "%s: failed to get device path", cxt->name)); return -1; } DBG(CXT, ul_debugobj(cxt, "%s: filename=%s", cxt->name, cxt->filename)); devno = sysfs_devname_to_devno(cxt->name, wholedisk ? wholedisk->name : NULL); if (!devno) { DBG(CXT, ul_debugobj(cxt, "%s: unknown device name", cxt->name)); return -1; } if (lsblk->inverse) { if (sysfs_init(&cxt->sysfs, devno, wholedisk ? &wholedisk->sysfs : NULL)) { DBG(CXT, ul_debugobj(cxt, "%s: failed to initialize sysfs handler", cxt->name)); return -1; } if (parent) parent->sysfs.parent = &cxt->sysfs; } else { if (sysfs_init(&cxt->sysfs, devno, parent ? &parent->sysfs : NULL)) { DBG(CXT, ul_debugobj(cxt, "%s: failed to initialize sysfs handler", cxt->name)); return -1; } } cxt->maj = major(devno); cxt->min = minor(devno); cxt->size = 0; if (sysfs_read_u64(&cxt->sysfs, "size", &cxt->size) == 0) /* in sectors */ cxt->size <<= 9; /* in bytes */ if (sysfs_read_int(&cxt->sysfs, "queue/discard_granularity", &cxt->discard) != 0) cxt->discard = 0; /* Ignore devices of zero size */ if (!lsblk->all_devices && cxt->size == 0) { DBG(CXT, ul_debugobj(cxt, "zero size device -- ignore")); return -1; } if (is_dm(cxt->name)) { cxt->dm_name = sysfs_strdup(&cxt->sysfs, "dm/name"); if (!cxt->dm_name) { DBG(CXT, ul_debugobj(cxt, "%s: failed to get dm name", cxt->name)); return -1; } } cxt->npartitions = sysfs_count_partitions(&cxt->sysfs, cxt->name); cxt->nholders = sysfs_count_dirents(&cxt->sysfs, "holders"); cxt->nslaves = sysfs_count_dirents(&cxt->sysfs, "slaves"); DBG(CXT, ul_debugobj(cxt, "%s: npartitions=%d, nholders=%d, nslaves=%d", cxt->name, cxt->npartitions, cxt->nholders, cxt->nslaves)); /* ignore non-SCSI devices */ if (lsblk->scsi && sysfs_scsi_get_hctl(&cxt->sysfs, NULL, NULL, NULL, NULL)) { DBG(CXT, ul_debugobj(cxt, "non-scsi device -- ignore")); return -1; } DBG(CXT, ul_debugobj(cxt, "%s: context successfully initialized", cxt->name)); return 0; } static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent, int do_partitions, const char *part_name); /* * List device partitions if any. */ static int list_partitions(struct blkdev_cxt *wholedisk_cxt, struct blkdev_cxt *parent_cxt, const char *part_name) { DIR *dir; struct dirent *d; struct blkdev_cxt part_cxt = { NULL }; int r = -1; assert(wholedisk_cxt); /* * Do not process further if there are no partitions for * this device or the device itself is a partition. */ if (!wholedisk_cxt->npartitions || wholedisk_cxt->partition) return -1; DBG(CXT, ul_debugobj(wholedisk_cxt, "probe whole-disk for partitions")); dir = sysfs_opendir(&wholedisk_cxt->sysfs, NULL); if (!dir) err(EXIT_FAILURE, _("failed to open device directory in sysfs")); while ((d = xreaddir(dir))) { /* Process particular partition only? */ if (part_name && strcmp(part_name, d->d_name)) continue; if (!(sysfs_is_partition_dirent(dir, d, wholedisk_cxt->name))) continue; DBG(CXT, ul_debugobj(wholedisk_cxt, " checking %s", d->d_name)); if (lsblk->inverse) { /* * * `- * `- * `-... */ if (set_cxt(&part_cxt, parent_cxt, wholedisk_cxt, d->d_name)) goto next; if (!parent_cxt && part_cxt.nholders) goto next; wholedisk_cxt->parent = &part_cxt; fill_table_line(&part_cxt, parent_cxt ? parent_cxt->scols_line : NULL); if (!lsblk->nodeps) process_blkdev(wholedisk_cxt, &part_cxt, 0, NULL); } else { /* * * `- * `- * `-... */ int ps = set_cxt(&part_cxt, wholedisk_cxt, wholedisk_cxt, d->d_name); /* Print whole disk only once */ if (r) fill_table_line(wholedisk_cxt, parent_cxt ? parent_cxt->scols_line : NULL); if (ps == 0 && !lsblk->nodeps) process_blkdev(&part_cxt, wholedisk_cxt, 0, NULL); } next: reset_blkdev_cxt(&part_cxt); r = 0; } DBG(CXT, ul_debugobj(wholedisk_cxt, "probe whole-disk for partitions -- done")); closedir(dir); return r; } static int get_wholedisk_from_partition_dirent(DIR *dir, struct dirent *d, struct blkdev_cxt *cxt) { char path[PATH_MAX]; char *p; int len; if ((len = readlinkat(dirfd(dir), d->d_name, path, sizeof(path) - 1)) < 0) return 0; path[len] = '\0'; /* The path ends with "...//" */ p = strrchr(path, '/'); if (!p) return 0; *p = '\0'; p = strrchr(path, '/'); if (!p) return 0; p++; return set_cxt(cxt, NULL, NULL, p); } /* * List device dependencies: partitions, holders (inverse = 0) or slaves (inverse = 1). */ static int list_deps(struct blkdev_cxt *cxt) { DIR *dir; struct dirent *d; struct blkdev_cxt dep = { NULL }; const char *depname; assert(cxt); if (lsblk->nodeps) return 0; DBG(CXT, ul_debugobj(cxt, "%s: list dependencies", cxt->name)); if (!(lsblk->inverse ? cxt->nslaves : cxt->nholders)) return 0; depname = lsblk->inverse ? "slaves" : "holders"; dir = sysfs_opendir(&cxt->sysfs, depname); if (!dir) return 0; DBG(CXT, ul_debugobj(cxt, "%s: checking for '%s' dependence", cxt->name, depname)); while ((d = xreaddir(dir))) { /* Is the dependency a partition? */ if (sysfs_is_partition_dirent(dir, d, NULL)) { if (!get_wholedisk_from_partition_dirent(dir, d, &dep)) { DBG(CXT, ul_debugobj(cxt, "%s: %s: dependence is partition", cxt->name, d->d_name)); process_blkdev(&dep, cxt, 1, d->d_name); } } /* The dependency is a whole device. */ else if (!set_cxt(&dep, cxt, NULL, d->d_name)) { DBG(CXT, ul_debugobj(cxt, "%s: %s: dependence is whole-disk", cxt->name, d->d_name)); /* For inverse tree we don't want to show partitions * if the dependence is on whole-disk */ process_blkdev(&dep, cxt, lsblk->inverse ? 0 : 1, NULL); } reset_blkdev_cxt(&dep); } closedir(dir); DBG(CXT, ul_debugobj(cxt, "%s: checking for '%s' -- done", cxt->name, depname)); return 0; } static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent, int do_partitions, const char *part_name) { if (do_partitions && cxt->npartitions) list_partitions(cxt, parent, part_name); /* partitions + whole-disk */ else fill_table_line(cxt, parent ? parent->scols_line : NULL); /* whole-disk only */ return list_deps(cxt); } /* Iterate devices in sysfs */ static int iterate_block_devices(void) { DIR *dir; struct dirent *d; struct blkdev_cxt cxt = { NULL }; if (!(dir = opendir(_PATH_SYS_BLOCK))) return -errno; DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK)); while ((d = xreaddir(dir))) { DBG(DEV, ul_debug(" %s dentry", d->d_name)); if (set_cxt(&cxt, NULL, NULL, d->d_name)) goto next; if (is_maj_excluded(cxt.maj) || !is_maj_included(cxt.maj)) goto next; /* Skip devices in the middle of dependency tree. */ if ((lsblk->inverse ? cxt.nholders : cxt.nslaves) > 0) goto next; process_blkdev(&cxt, NULL, 1, NULL); next: reset_blkdev_cxt(&cxt); } closedir(dir); DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK " -- done")); return 0; } static char *devno_to_sysfs_name(dev_t devno, char *devname, char *buf, size_t buf_size) { char path[PATH_MAX]; ssize_t len; if (!sysfs_devno_path(devno, path, sizeof(path))) { warn(_("%s: failed to compose sysfs path"), devname); return NULL; } len = readlink(path, buf, buf_size - 1); if (len < 0) { warn(_("%s: failed to read link"), path); return NULL; } buf[len] = '\0'; return xstrdup(strrchr(buf, '/') + 1); } static int process_one_device(char *devname) { struct blkdev_cxt parent = { NULL }, cxt = { NULL }; struct stat st; char buf[PATH_MAX + 1], *name = NULL, *diskname = NULL; dev_t disk = 0; int real_part = 0, rc = -EINVAL; if (stat(devname, &st) || !S_ISBLK(st.st_mode)) { warnx(_("%s: not a block device"), devname); goto leave; } if (!(name = devno_to_sysfs_name(st.st_rdev, devname, buf, PATH_MAX))) { warn(_("%s: failed to get sysfs name"), devname); goto leave; } if (!strncmp(name, "dm-", 3)) { /* dm mapping is never a real partition! */ real_part = 0; } else { if (blkid_devno_to_wholedisk(st.st_rdev, buf, sizeof(buf), &disk)) { warn(_("%s: failed to get whole-disk device number"), devname); goto leave; } diskname = buf; real_part = st.st_rdev != disk; } if (!real_part) { /* * Device is not a partition. */ if (set_cxt(&cxt, NULL, NULL, name)) goto leave; process_blkdev(&cxt, NULL, !lsblk->inverse, NULL); } else { /* * Partition, read sysfs name of the device. */ if (set_cxt(&parent, NULL, NULL, diskname)) goto leave; if (set_cxt(&cxt, &parent, &parent, name)) goto leave; if (lsblk->inverse) process_blkdev(&parent, &cxt, 1, cxt.name); else process_blkdev(&cxt, &parent, 1, NULL); } rc = 0; leave: free(name); reset_blkdev_cxt(&cxt); if (real_part) reset_blkdev_cxt(&parent); return rc; } static void parse_excludes(const char *str0) { const char *str = str0; while (str && *str) { char *end = NULL; unsigned long n; errno = 0; n = strtoul(str, &end, 10); if (end == str || (end && *end && *end != ',')) errx(EXIT_FAILURE, _("failed to parse list '%s'"), str0); if (errno != 0 && (n == ULONG_MAX || n == 0)) err(EXIT_FAILURE, _("failed to parse list '%s'"), str0); excludes[nexcludes++] = n; if (nexcludes == ARRAY_SIZE(excludes)) /* TRANSLATORS: The standard value for %d is 256. */ errx(EXIT_FAILURE, _("the list of excluded devices is " "too large (limit is %d devices)"), (int)ARRAY_SIZE(excludes)); str = end && *end ? end + 1 : NULL; } } static void parse_includes(const char *str0) { const char *str = str0; while (str && *str) { char *end = NULL; unsigned long n; errno = 0; n = strtoul(str, &end, 10); if (end == str || (end && *end && *end != ',')) errx(EXIT_FAILURE, _("failed to parse list '%s'"), str0); if (errno != 0 && (n == ULONG_MAX || n == 0)) err(EXIT_FAILURE, _("failed to parse list '%s'"), str0); includes[nincludes++] = n; if (nincludes == ARRAY_SIZE(includes)) /* TRANSLATORS: The standard value for %d is 256. */ errx(EXIT_FAILURE, _("the list of included devices is " "too large (limit is %d devices)"), (int)ARRAY_SIZE(includes)); str = end && *end ? end + 1 : NULL; } } /* * see set_sortdata_u64() and columns initialization in main() */ static int cmp_u64_cells(struct libscols_cell *a, struct libscols_cell *b, __attribute__((__unused__)) void *data) { uint64_t *adata = (uint64_t *) scols_cell_get_userdata(a), *bdata = (uint64_t *) scols_cell_get_userdata(b); if (adata == NULL && bdata == NULL) return 0; if (adata == NULL) return -1; if (bdata == NULL) return 1; return *adata == *bdata ? 0 : *adata >= *bdata ? 1 : -1; } static void __attribute__((__noreturn__)) usage(void) { FILE *out = stdout; size_t i; fputs(USAGE_HEADER, out); fprintf(out, _(" %s [options] [ ...]\n"), program_invocation_short_name); fputs(USAGE_SEPARATOR, out); fputs(_("List information about block devices.\n"), out); fputs(USAGE_OPTIONS, out); fputs(_(" -a, --all print all devices\n"), out); fputs(_(" -b, --bytes print SIZE in bytes rather than in human readable format\n"), out); fputs(_(" -d, --nodeps don't print slaves or holders\n"), out); fputs(_(" -D, --discard print discard capabilities\n"), out); fputs(_(" -z, --zoned print zone model\n"), out); fputs(_(" -e, --exclude exclude devices by major number (default: RAM disks)\n"), out); fputs(_(" -f, --fs output info about filesystems\n"), out); fputs(_(" -i, --ascii use ascii characters only\n"), out); fputs(_(" -I, --include show only devices with specified major numbers\n"), out); fputs(_(" -J, --json use JSON output format\n"), out); fputs(_(" -l, --list use list format output\n"), out); fputs(_(" -T, --tree use tree format output\n"), out); fputs(_(" -m, --perms output info about permissions\n"), out); fputs(_(" -n, --noheadings don't print headings\n"), out); fputs(_(" -o, --output output columns\n"), out); fputs(_(" -O, --output-all output all columns\n"), out); fputs(_(" -p, --paths print complete device path\n"), out); fputs(_(" -P, --pairs use key=\"value\" output format\n"), out); fputs(_(" -r, --raw use raw output format\n"), out); fputs(_(" -s, --inverse inverse dependencies\n"), out); fputs(_(" -S, --scsi output info about SCSI devices\n"), out); fputs(_(" -t, --topology output info about topology\n"), out); fputs(_(" -x, --sort sort output by \n"), out); fputs(USAGE_SEPARATOR, out); printf(USAGE_HELP_OPTIONS(22)); fprintf(out, USAGE_COLUMNS); for (i = 0; i < ARRAY_SIZE(infos); i++) fprintf(out, " %11s %s\n", infos[i].name, _(infos[i].help)); printf(USAGE_MAN_TAIL("lsblk(8)")); exit(EXIT_SUCCESS); } static void check_sysdevblock(void) { if (access(_PATH_SYS_DEVBLOCK, R_OK) != 0) err(EXIT_FAILURE, _("failed to access sysfs directory: %s"), _PATH_SYS_DEVBLOCK); } int main(int argc, char *argv[]) { struct lsblk _ls = { .sort_id = -1, .flags = LSBLK_TREE }; int c, status = EXIT_FAILURE; char *outarg = NULL; size_t i; int force_tree = 0; static const struct option longopts[] = { { "all", no_argument, NULL, 'a' }, { "bytes", no_argument, NULL, 'b' }, { "nodeps", no_argument, NULL, 'd' }, { "discard", no_argument, NULL, 'D' }, { "zoned", no_argument, NULL, 'z' }, { "help", no_argument, NULL, 'h' }, { "json", no_argument, NULL, 'J' }, { "output", required_argument, NULL, 'o' }, { "output-all", no_argument, NULL, 'O' }, { "perms", no_argument, NULL, 'm' }, { "noheadings", no_argument, NULL, 'n' }, { "list", no_argument, NULL, 'l' }, { "ascii", no_argument, NULL, 'i' }, { "raw", no_argument, NULL, 'r' }, { "inverse", no_argument, NULL, 's' }, { "fs", no_argument, NULL, 'f' }, { "exclude", required_argument, NULL, 'e' }, { "include", required_argument, NULL, 'I' }, { "topology", no_argument, NULL, 't' }, { "paths", no_argument, NULL, 'p' }, { "pairs", no_argument, NULL, 'P' }, { "scsi", no_argument, NULL, 'S' }, { "sort", required_argument, NULL, 'x' }, { "tree", no_argument, NULL, 'T' }, { "version", no_argument, NULL, 'V' }, { NULL, 0, NULL, 0 }, }; static const ul_excl_t excl[] = { /* rows and cols in ASCII order */ { 'D','O' }, { 'I','e' }, { 'J', 'P', 'r' }, { 'O','S' }, { 'O','f' }, { 'O','m' }, { 'O','t' }, { 'P','T', 'l','r' }, { 0 } }; int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT; setlocale(LC_ALL, ""); bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); atexit(close_stdout); lsblk = &_ls; lsblk_init_debug(); while((c = getopt_long(argc, argv, "abdDze:fhJlnmo:OpPiI:rstVSTx:", longopts, NULL)) != -1) { err_exclusive_options(c, longopts, excl, excl_st); switch(c) { case 'a': lsblk->all_devices = 1; break; case 'b': lsblk->bytes = 1; break; case 'd': lsblk->nodeps = 1; break; case 'D': add_uniq_column(COL_NAME); add_uniq_column(COL_DALIGN); add_uniq_column(COL_DGRAN); add_uniq_column(COL_DMAX); add_uniq_column(COL_DZERO); break; case 'z': add_uniq_column(COL_NAME); add_uniq_column(COL_ZONED); break; case 'e': parse_excludes(optarg); break; case 'h': usage(); break; case 'J': lsblk->flags |= LSBLK_JSON; break; case 'l': lsblk->flags &= ~LSBLK_TREE; /* disable the default */ break; case 'n': lsblk->flags |= LSBLK_NOHEADINGS; break; case 'o': outarg = optarg; break; case 'O': for (ncolumns = 0 ; ncolumns < ARRAY_SIZE(infos); ncolumns++) columns[ncolumns] = ncolumns; break; case 'p': lsblk->paths = 1; break; case 'P': lsblk->flags |= LSBLK_EXPORT; lsblk->flags &= ~LSBLK_TREE; /* disable the default */ break; case 'i': lsblk->flags |= LSBLK_ASCII; break; case 'I': parse_includes(optarg); break; case 'r': lsblk->flags &= ~LSBLK_TREE; /* disable the default */ lsblk->flags |= LSBLK_RAW; /* enable raw */ break; case 's': lsblk->inverse = 1; break; case 'f': add_uniq_column(COL_NAME); add_uniq_column(COL_FSTYPE); add_uniq_column(COL_LABEL); add_uniq_column(COL_UUID); add_uniq_column(COL_TARGET); break; case 'm': add_uniq_column(COL_NAME); add_uniq_column(COL_SIZE); add_uniq_column(COL_OWNER); add_uniq_column(COL_GROUP); add_uniq_column(COL_MODE); break; case 't': add_uniq_column(COL_NAME); add_uniq_column(COL_ALIOFF); add_uniq_column(COL_MINIO); add_uniq_column(COL_OPTIO); add_uniq_column(COL_PHYSEC); add_uniq_column(COL_LOGSEC); add_uniq_column(COL_ROTA); add_uniq_column(COL_SCHED); add_uniq_column(COL_RQ_SIZE); add_uniq_column(COL_RA); add_uniq_column(COL_WSAME); break; case 'S': lsblk->nodeps = 1; lsblk->scsi = 1; add_uniq_column(COL_NAME); add_uniq_column(COL_HCTL); add_uniq_column(COL_TYPE); add_uniq_column(COL_VENDOR); add_uniq_column(COL_MODEL); add_uniq_column(COL_REV); add_uniq_column(COL_TRANSPORT); break; case 'T': force_tree = 1; break; case 'V': printf(UTIL_LINUX_VERSION); return EXIT_SUCCESS; case 'x': lsblk->flags &= ~LSBLK_TREE; /* disable the default */ lsblk->sort_id = column_name_to_id(optarg, strlen(optarg)); if (lsblk->sort_id >= 0) break; /* fallthrough */ default: errtryhelp(EXIT_FAILURE); } } if (force_tree) lsblk->flags |= LSBLK_TREE; check_sysdevblock(); if (!ncolumns) { add_column(COL_NAME); add_column(COL_MAJMIN); add_column(COL_RM); add_column(COL_SIZE); add_column(COL_RO); add_column(COL_TYPE); add_column(COL_TARGET); } if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns), &ncolumns, column_name_to_id) < 0) return EXIT_FAILURE; if (lsblk->all_devices == 0 && nexcludes == 0 && nincludes == 0) excludes[nexcludes++] = 1; /* default: ignore RAM disks */ if (lsblk->sort_id < 0) /* Since Linux 4.8 we have sort devices by default, because * /sys is no more sorted */ lsblk->sort_id = COL_MAJMIN; /* For --inverse --list we still follow parent->child relation */ if (lsblk->inverse && !(lsblk->flags & LSBLK_TREE)) lsblk->force_tree_order = 1; if (lsblk->sort_id >= 0 && column_id_to_number(lsblk->sort_id) < 0) { /* the sort column is not between output columns -- add as hidden */ add_column(lsblk->sort_id); lsblk->sort_hidden = 1; } mnt_init_debug(0); scols_init_debug(0); /* * initialize output columns */ if (!(lsblk->table = scols_new_table())) errx(EXIT_FAILURE, _("failed to allocate output table")); scols_table_enable_raw(lsblk->table, !!(lsblk->flags & LSBLK_RAW)); scols_table_enable_export(lsblk->table, !!(lsblk->flags & LSBLK_EXPORT)); scols_table_enable_ascii(lsblk->table, !!(lsblk->flags & LSBLK_ASCII)); scols_table_enable_json(lsblk->table, !!(lsblk->flags & LSBLK_JSON)); scols_table_enable_noheadings(lsblk->table, !!(lsblk->flags & LSBLK_NOHEADINGS)); if (lsblk->flags & LSBLK_JSON) scols_table_set_name(lsblk->table, "blockdevices"); for (i = 0; i < ncolumns; i++) { struct colinfo *ci = get_column_info(i); struct libscols_column *cl; int id = get_column_id(i), fl = ci->flags; if (!(lsblk->flags & LSBLK_TREE) && id == COL_NAME) fl &= ~SCOLS_FL_TREE; if (lsblk->sort_hidden && lsblk->sort_id == id) fl |= SCOLS_FL_HIDDEN; cl = scols_table_new_column(lsblk->table, ci->name, ci->whint, fl); if (!cl) { warn(_("failed to allocate output column")); goto leave; } if (!lsblk->sort_col && lsblk->sort_id == id) { lsblk->sort_col = cl; scols_column_set_cmpfunc(cl, ci->sort_type == SORT_STRING ? scols_cmpstr_cells : cmp_u64_cells, NULL); } } if (optind == argc) status = iterate_block_devices() == 0 ? EXIT_SUCCESS : EXIT_FAILURE; else { int cnt = 0, cnt_err = 0; while (optind < argc) { if (process_one_device(argv[optind++]) != 0) cnt_err++; cnt++; } status = cnt == 0 ? EXIT_FAILURE : /* nothing */ cnt == cnt_err ? LSBLK_EXIT_ALLFAILED :/* all failed */ cnt_err ? LSBLK_EXIT_SOMEOK : /* some ok */ EXIT_SUCCESS; /* all success */ } if (lsblk->sort_col) scols_sort_table(lsblk->table, lsblk->sort_col); if (lsblk->force_tree_order) scols_sort_table_by_tree(lsblk->table); scols_print_table(lsblk->table); leave: if (lsblk->sort_col) unref_sortdata(lsblk->table); scols_unref_table(lsblk->table); mnt_unref_table(mtab); mnt_unref_table(swaps); mnt_unref_cache(mntcache); #ifdef HAVE_LIBUDEV udev_unref(udev); #endif return status; }