/* * lsblk(8) - list block devices * * Copyright (C) 2010-2018 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 "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 "optutils.h" #include "fileutils.h" #include "lsblk.h" UL_DEBUG_DEFINE_MASK(lsblk); UL_DEBUG_DEFINE_MASKNAMES(lsblk) = UL_DEBUG_EMPTY_MASKNAMES; #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_PATH, COL_MAJMIN, COL_FSAVAIL, COL_FSSIZE, COL_FSTYPE, COL_FSUSED, COL_FSUSEPERC, COL_FSVERSION, COL_TARGET, COL_LABEL, COL_UUID, COL_PTUUID, COL_PTTYPE, COL_PARTTYPE, COL_PARTTYPENAME, 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, COL_DAX }; /* 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), }; /* Types used for qsort() and JSON */ enum { COLTYPE_STR = 0, /* default */ COLTYPE_NUM = 1, /* always u64 number */ COLTYPE_SORTNUM = 2, /* string on output, u64 for qsort() */ COLTYPE_SIZE = 3, /* srring by default, number when --bytes */ COLTYPE_BOOL = 4 /* 0 or 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; int type; /* COLTYPE_* */ }; /* columns descriptions */ static struct colinfo infos[] = { [COL_NAME] = { "NAME", 0.25, 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_PATH] = { "PATH", 0.3, 0, N_("path to the device node") }, [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number"), COLTYPE_SORTNUM }, [COL_FSAVAIL] = { "FSAVAIL", 5, SCOLS_FL_RIGHT, N_("filesystem size available") }, [COL_FSSIZE] = { "FSSIZE", 5, SCOLS_FL_RIGHT, N_("filesystem size") }, [COL_FSTYPE] = { "FSTYPE", 0.1, SCOLS_FL_TRUNC, N_("filesystem type") }, [COL_FSUSED] = { "FSUSED", 5, SCOLS_FL_RIGHT, N_("filesystem size used") }, [COL_FSUSEPERC] = { "FSUSE%", 3, SCOLS_FL_RIGHT, N_("filesystem use percentage") }, [COL_FSVERSION] = { "FSVER", 0.1, SCOLS_FL_TRUNC, N_("filesystem version") }, [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_PTUUID] = { "PTUUID", 36, 0, N_("partition table identifier (usually UUID)") }, [COL_PTTYPE] = { "PTTYPE", 0.1, 0, N_("partition table type") }, [COL_PARTTYPE] = { "PARTTYPE", 36, 0, N_("partition type code or UUID") }, [COL_PARTTYPENAME] = { "PARTTYPENAME", 0.1, 0, N_("partition type name") }, [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"), COLTYPE_NUM }, [COL_RO] = { "RO", 1, SCOLS_FL_RIGHT, N_("read-only device"), COLTYPE_BOOL }, [COL_RM] = { "RM", 1, SCOLS_FL_RIGHT, N_("removable device"), COLTYPE_BOOL }, [COL_HOTPLUG]= { "HOTPLUG", 1, SCOLS_FL_RIGHT, N_("removable or hotplug device (usb, pcmcia, ...)"), COLTYPE_BOOL }, [COL_ROTA] = { "ROTA", 1, SCOLS_FL_RIGHT, N_("rotational device"), COLTYPE_BOOL }, [COL_RAND] = { "RAND", 1, SCOLS_FL_RIGHT, N_("adds randomness"), COLTYPE_BOOL }, [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"), COLTYPE_SIZE }, [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"), COLTYPE_NUM }, [COL_MINIO] = { "MIN-IO", 6, SCOLS_FL_RIGHT, N_("minimum I/O size"), COLTYPE_NUM }, [COL_OPTIO] = { "OPT-IO", 6, SCOLS_FL_RIGHT, N_("optimal I/O size"), COLTYPE_NUM }, [COL_PHYSEC] = { "PHY-SEC", 7, SCOLS_FL_RIGHT, N_("physical sector size"), COLTYPE_NUM }, [COL_LOGSEC] = { "LOG-SEC", 7, SCOLS_FL_RIGHT, N_("logical sector size"), COLTYPE_NUM }, [COL_SCHED] = { "SCHED", 0.1, 0, N_("I/O scheduler name") }, [COL_RQ_SIZE]= { "RQ-SIZE", 5, SCOLS_FL_RIGHT, N_("request queue size"), COLTYPE_NUM }, [COL_TYPE] = { "TYPE", 4, 0, N_("device type") }, [COL_DALIGN] = { "DISC-ALN", 6, SCOLS_FL_RIGHT, N_("discard alignment offset"), COLTYPE_NUM }, [COL_DGRAN] = { "DISC-GRAN", 6, SCOLS_FL_RIGHT, N_("discard granularity"), COLTYPE_SIZE }, [COL_DMAX] = { "DISC-MAX", 6, SCOLS_FL_RIGHT, N_("discard max bytes"), COLTYPE_SIZE }, [COL_DZERO] = { "DISC-ZERO", 1, SCOLS_FL_RIGHT, N_("discard zeroes data"), COLTYPE_BOOL }, [COL_WSAME] = { "WSAME", 6, SCOLS_FL_RIGHT, N_("write same max bytes"), COLTYPE_SIZE }, [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") }, [COL_DAX] = { "DAX", 1, SCOLS_FL_RIGHT, N_("dax-capable device"), COLTYPE_BOOL }, }; 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 void lsblk_init_debug(void) { __UL_INIT_DEBUG_FROM_ENV(lsblk, LSBLK_DEBUG_, 0, LSBLK_DEBUG); } /* * exclude/include devices filter based on major device numbers */ static int excludes[256]; static size_t nexcludes; static int includes[256]; static size_t nincludes; 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; } /* Converts column sequential number to column ID (COL_*) */ 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]; } /* Returns column description for the column sequential number */ static struct colinfo *get_column_info(int num) { return &infos[ get_column_id(num) ]; } /* Converts column name (as defined in the infos[] to the column ID */ 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; } /* Converts column ID (COL_*) to column sequential number */ 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; } /* Checks for DM prefix in the device name */ static int is_dm(const char *name) { return strncmp(name, "dm-", 3) ? 0 : 1; } /* Returns full pat to the device node (TODO: what about sysfs_blkdev_get_path()) */ static char *get_device_path(struct lsblk_device *dev) { char path[PATH_MAX]; assert(dev); assert(dev->name); if (is_dm(dev->name)) return __canonicalize_dm_name(lsblk->sysroot, dev->name); snprintf(path, sizeof(path), "/dev/%s", dev->name); sysfs_devname_sys_to_dev(path); return xstrdup(path); } static int is_readonly_device(struct lsblk_device *dev) { int fd, ro = 0; if (ul_path_scanf(dev->sysfs, "ro", "%d", &ro) == 1) return ro; /* fallback if "ro" attribute does not exist */ fd = open(dev->filename, O_RDONLY); if (fd != -1) { if (ioctl(fd, BLKROGET, &ro) != 0) ro = 0; close(fd); } return ro; } static char *get_scheduler(struct lsblk_device *dev) { char buf[128]; char *p, *res = NULL; if (ul_path_read_buffer(dev->sysfs, buf, sizeof(buf), "queue/scheduler") == 0) return NULL; p = strchr(buf, '['); if (p) { res = p + 1; p = strchr(res, ']'); if (p) { *p = '\0'; res = xstrdup(res); } else res = NULL; } return res; } static char *get_type(struct lsblk_device *dev) { char *res = NULL, *p; if (device_is_partition(dev)) return xstrdup("part"); if (is_dm(dev->name)) { char *dm_uuid = NULL; /* The DM_UUID prefix should be set to subsystem owning * the device - LVM, CRYPT, DMRAID, MPATH, PART */ if (ul_path_read_string(dev->sysfs, &dm_uuid, "dm/uuid") > 0 && 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(dev->name, "loop", 4)) { res = xstrdup("loop"); } else if (!strncmp(dev->name, "md", 2)) { char *md_level = NULL; ul_path_read_string(dev->sysfs, &md_level, "md/level"); res = md_level ? md_level : xstrdup("md"); } else { const char *type = NULL; int x = 0; if (ul_path_read_s32(dev->sysfs, &x, "device/type") == 0) type = blkdev_scsi_type_to_name(x); if (!type) type = "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 lsblk_device *dev) { struct path_cxt *sysfs = dev->sysfs; char *attr = NULL; const char *trans = NULL; /* SCSI - Serial Peripheral Interface */ if (sysfs_blkdev_scsi_host_is(sysfs, "spi")) trans = "spi"; /* FC/FCoE - Fibre Channel / Fibre Channel over Ethernet */ else if (sysfs_blkdev_scsi_host_is(sysfs, "fc")) { attr = sysfs_blkdev_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_blkdev_scsi_host_is(sysfs, "sas") || sysfs_blkdev_scsi_has_attribute(sysfs, "sas_device")) trans = "sas"; /* SBP - Serial Bus Protocol (FireWire) */ else if (sysfs_blkdev_scsi_has_attribute(sysfs, "ieee1394_id")) trans = "sbp"; /* iSCSI */ else if (sysfs_blkdev_scsi_host_is(sysfs, "iscsi")) trans ="iscsi"; /* USB - Universal Serial Bus */ else if (sysfs_blkdev_scsi_path_contains(sysfs, "usb")) trans = "usb"; /* ATA, SATA */ else if (sysfs_blkdev_scsi_host_is(sysfs, "scsi")) { attr = sysfs_blkdev_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(dev->name, "nvme", 4) == 0) trans = "nvme"; return trans ? xstrdup(trans) : NULL; } static char *get_subsystems(struct lsblk_device *dev) { char path[PATH_MAX]; char *sub, *chain, *res = NULL; size_t len = 0, last = 0; chain = sysfs_blkdev_get_devchain(dev->sysfs, path, sizeof(path)); if (!chain) return NULL; while (sysfs_blkdev_next_subsystem(dev->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); } /* do not modify *data on any error */ static void str2u64(const char *str, uint64_t *data) { uintmax_t num; char *end = NULL; errno = 0; if (str == NULL || *str == '\0') return; num = strtoumax(str, &end, 10); if (errno || str == end || (end && *end)) return; *data = num; } 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 char *get_vfs_attribute(struct lsblk_device *dev, int id) { char *sizestr; uint64_t vfs_attr = 0; char *mnt; if (!dev->fsstat.f_blocks) { mnt = lsblk_device_get_mountpoint(dev); if (!mnt || dev->is_swap) return NULL; if (statvfs(mnt, &dev->fsstat) != 0) return NULL; } switch(id) { case COL_FSSIZE: vfs_attr = dev->fsstat.f_frsize * dev->fsstat.f_blocks; break; case COL_FSAVAIL: vfs_attr = dev->fsstat.f_frsize * dev->fsstat.f_bavail; break; case COL_FSUSED: vfs_attr = dev->fsstat.f_frsize * (dev->fsstat.f_blocks - dev->fsstat.f_bfree); break; case COL_FSUSEPERC: if (dev->fsstat.f_blocks == 0) return xstrdup("-"); xasprintf(&sizestr, "%.0f%%", (double)(dev->fsstat.f_blocks - dev->fsstat.f_bfree) / dev->fsstat.f_blocks * 100); return sizestr; } if (!vfs_attr) sizestr = xstrdup("0"); else if (lsblk->bytes) xasprintf(&sizestr, "%ju", vfs_attr); else sizestr = size_to_human_string(SIZE_SUFFIX_1LETTER, vfs_attr); return sizestr; } static struct stat *device_get_stat(struct lsblk_device *dev) { if (!dev->st.st_rdev && stat(dev->filename, &dev->st) != 0) return NULL; return &dev->st; } static int is_removable_device(struct lsblk_device *dev, struct lsblk_device *parent) { struct path_cxt *pc; if (dev->removable != -1) goto done; if (ul_path_scanf(dev->sysfs, "removable", "%d", &dev->removable) == 1) goto done; if (parent) { pc = sysfs_blkdev_get_parent(dev->sysfs); if (!pc) goto done; /* dev is partition and parent is whole-disk */ if (pc == parent->sysfs) dev->removable = is_removable_device(parent, NULL); /* parent is something else, use sysfs parent */ else if (ul_path_scanf(pc, "removable", "%d", &dev->removable) != 1) dev->removable = 0; } done: if (dev->removable == -1) dev->removable = 0; return dev->removable; } static uint64_t device_get_discard_granularity(struct lsblk_device *dev) { if (dev->discard_granularity == (uint64_t) -1 && ul_path_read_u64(dev->sysfs, &dev->discard_granularity, "queue/discard_granularity") != 0) dev->discard_granularity = 0; return dev->discard_granularity; } /* * Generates data (string) for column specified by column ID for specified device. If sortdata * is not NULL then returns number usable to sort the column if the data are available for the * column. */ static char *device_get_data( struct lsblk_device *dev, /* device */ struct lsblk_device *parent, /* device parent as defined in the tree */ int id, /* column ID (COL_*) */ uint64_t *sortdata) /* returns sort data as number */ { struct lsblk_devprop *prop = NULL; char *str = NULL; switch(id) { case COL_NAME: str = dev->dm_name ? mk_dm_name(dev->dm_name) : mk_name(dev->name); break; case COL_KNAME: str = mk_name(dev->name); break; case COL_PKNAME: if (parent) str = mk_name(parent->name); break; case COL_PATH: if (dev->filename) str = xstrdup(dev->filename); break; case COL_OWNER: if (lsblk->sysroot) prop = lsblk_device_get_properties(dev); if (prop && prop->owner) { str = xstrdup(prop->owner); } else { struct stat *st = device_get_stat(dev); struct passwd *pw = st ? getpwuid(st->st_uid) : NULL; if (pw) str = xstrdup(pw->pw_name); } break; case COL_GROUP: if (lsblk->sysroot) prop = lsblk_device_get_properties(dev); if (prop && prop->group) { str = xstrdup(prop->group); } else { struct stat *st = device_get_stat(dev); struct group *gr = st ? getgrgid(st->st_gid) : NULL; if (gr) str = xstrdup(gr->gr_name); } break; case COL_MODE: if (lsblk->sysroot) prop = lsblk_device_get_properties(dev); if (prop && prop->mode) { str = xstrdup(prop->mode); } else { struct stat *st = device_get_stat(dev); char md[11] = { '\0' }; if (st) str = xstrdup(xstrmode(st->st_mode, md)); } break; case COL_MAJMIN: if (is_parsable(lsblk)) xasprintf(&str, "%u:%u", dev->maj, dev->min); else xasprintf(&str, "%3u:%-3u", dev->maj, dev->min); if (sortdata) *sortdata = makedev(dev->maj, dev->min); break; case COL_FSTYPE: prop = lsblk_device_get_properties(dev); if (prop && prop->fstype) str = xstrdup(prop->fstype); break; case COL_FSSIZE: case COL_FSAVAIL: case COL_FSUSED: case COL_FSUSEPERC: str = get_vfs_attribute(dev, id); break; case COL_FSVERSION: prop = lsblk_device_get_properties(dev); if (prop && prop->fsversion) str = xstrdup(prop->fsversion); break; case COL_TARGET: { char *s = lsblk_device_get_mountpoint(dev); if (s) str = xstrdup(s); else str = NULL; break; } case COL_LABEL: prop = lsblk_device_get_properties(dev); if (prop && prop->label) str = xstrdup(prop->label); break; case COL_UUID: prop = lsblk_device_get_properties(dev); if (prop && prop->uuid) str = xstrdup(prop->uuid); break; case COL_PTUUID: prop = lsblk_device_get_properties(dev); if (prop && prop->ptuuid) str = xstrdup(prop->ptuuid); break; case COL_PTTYPE: prop = lsblk_device_get_properties(dev); if (prop && prop->pttype) str = xstrdup(prop->pttype); break; case COL_PARTTYPE: prop = lsblk_device_get_properties(dev); if (prop && prop->parttype) str = xstrdup(prop->parttype); break; case COL_PARTTYPENAME: prop = lsblk_device_get_properties(dev); if (prop && prop->parttype && prop->pttype) { const char *x = lsblk_parttype_code_to_string( prop->parttype, prop->pttype); if (x) str = xstrdup(x); } break; case COL_PARTLABEL: prop = lsblk_device_get_properties(dev); if (prop && prop->partlabel) str = xstrdup(prop->partlabel); break; case COL_PARTUUID: prop = lsblk_device_get_properties(dev); if (prop && prop->partuuid) str = xstrdup(prop->partuuid); break; case COL_PARTFLAGS: prop = lsblk_device_get_properties(dev); if (prop && prop->partflags) str = xstrdup(prop->partflags); break; case COL_WWN: prop = lsblk_device_get_properties(dev); if (prop && prop->wwn) str = xstrdup(prop->wwn); break; case COL_RA: ul_path_read_string(dev->sysfs, &str, "queue/read_ahead_kb"); if (sortdata) str2u64(str, sortdata); break; case COL_RO: str = xstrdup(is_readonly_device(dev) ? "1" : "0"); break; case COL_RM: str = xstrdup(is_removable_device(dev, parent) ? "1" : "0"); break; case COL_HOTPLUG: str = sysfs_blkdev_is_hotpluggable(dev->sysfs) ? xstrdup("1") : xstrdup("0"); break; case COL_ROTA: ul_path_read_string(dev->sysfs, &str, "queue/rotational"); break; case COL_RAND: ul_path_read_string(dev->sysfs, &str, "queue/add_random"); break; case COL_MODEL: if (!device_is_partition(dev) && dev->nslaves == 0) { prop = lsblk_device_get_properties(dev); if (prop && prop->model) str = xstrdup(prop->model); else ul_path_read_string(dev->sysfs, &str, "device/model"); } break; case COL_SERIAL: if (!device_is_partition(dev) && dev->nslaves == 0) { prop = lsblk_device_get_properties(dev); if (prop && prop->serial) str = xstrdup(prop->serial); else ul_path_read_string(dev->sysfs, &str, "device/serial"); } break; case COL_REV: if (!device_is_partition(dev) && dev->nslaves == 0) ul_path_read_string(dev->sysfs, &str, "device/rev"); break; case COL_VENDOR: if (!device_is_partition(dev) && dev->nslaves == 0) ul_path_read_string(dev->sysfs, &str, "device/vendor"); break; case COL_SIZE: if (lsblk->bytes) xasprintf(&str, "%ju", dev->size); else str = size_to_human_string(SIZE_SUFFIX_1LETTER, dev->size); if (sortdata) *sortdata = dev->size; break; case COL_STATE: if (!device_is_partition(dev) && !dev->dm_name) ul_path_read_string(dev->sysfs, &str, "device/state"); else if (dev->dm_name) { int x = 0; if (ul_path_read_s32(dev->sysfs, &x, "dm/suspended") == 0) str = xstrdup(x ? "suspended" : "running"); } break; case COL_ALIOFF: ul_path_read_string(dev->sysfs, &str, "alignment_offset"); if (sortdata) str2u64(str, sortdata); break; case COL_MINIO: ul_path_read_string(dev->sysfs, &str, "queue/minimum_io_size"); if (sortdata) str2u64(str, sortdata); break; case COL_OPTIO: ul_path_read_string(dev->sysfs, &str, "queue/optimal_io_size"); if (sortdata) str2u64(str, sortdata); break; case COL_PHYSEC: ul_path_read_string(dev->sysfs, &str, "queue/physical_block_size"); if (sortdata) str2u64(str, sortdata); break; case COL_LOGSEC: ul_path_read_string(dev->sysfs, &str, "queue/logical_block_size"); if (sortdata) str2u64(str, sortdata); break; case COL_SCHED: str = get_scheduler(dev); break; case COL_RQ_SIZE: ul_path_read_string(dev->sysfs, &str, "queue/nr_requests"); if (sortdata) str2u64(str, sortdata); break; case COL_TYPE: str = get_type(dev); break; case COL_HCTL: { int h, c, t, l; if (sysfs_blkdev_scsi_get_hctl(dev->sysfs, &h, &c, &t, &l) == 0) xasprintf(&str, "%d:%d:%d:%d", h, c, t, l); break; } case COL_TRANSPORT: str = get_transport(dev); break; case COL_SUBSYS: str = get_subsystems(dev); break; case COL_DALIGN: if (device_get_discard_granularity(dev) > 0) ul_path_read_string(dev->sysfs, &str, "discard_alignment"); if (!str) str = xstrdup("0"); if (sortdata) str2u64(str, sortdata); break; case COL_DGRAN: if (lsblk->bytes) { ul_path_read_string(dev->sysfs, &str, "queue/discard_granularity"); if (sortdata) str2u64(str, sortdata); } else { uint64_t x = device_get_discard_granularity(dev); str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sortdata) *sortdata = x; } break; case COL_DMAX: if (lsblk->bytes) { ul_path_read_string(dev->sysfs, &str, "queue/discard_max_bytes"); if (sortdata) str2u64(str, sortdata); } else { uint64_t x; if (ul_path_read_u64(dev->sysfs, &x, "queue/discard_max_bytes") == 0) { str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sortdata) *sortdata = x; } } break; case COL_DZERO: if (device_get_discard_granularity(dev) > 0) ul_path_read_string(dev->sysfs, &str, "queue/discard_zeroes_data"); if (!str) str = xstrdup("0"); break; case COL_WSAME: if (lsblk->bytes) { ul_path_read_string(dev->sysfs, &str, "queue/write_same_max_bytes"); if (sortdata) str2u64(str, sortdata); } else { uint64_t x; if (ul_path_read_u64(dev->sysfs, &x, "queue/write_same_max_bytes") == 0) { str = size_to_human_string(SIZE_SUFFIX_1LETTER, x); if (sortdata) *sortdata = x; } } if (!str) str = xstrdup("0"); break; case COL_ZONED: ul_path_read_string(dev->sysfs, &str, "queue/zoned"); break; case COL_DAX: ul_path_read_string(dev->sysfs, &str, "queue/dax"); break; }; return str; } /* * Adds data for all wanted columns about the device to the smartcols table */ static void device_to_scols( struct lsblk_device *dev, struct lsblk_device *parent, struct libscols_table *tab, struct libscols_line *parent_line) { size_t i; struct libscols_line *ln; struct lsblk_iter itr; struct lsblk_device *child = NULL; int link_group = 0; DBG(DEV, ul_debugobj(dev, "add '%s' to scols", dev->name)); ON_DBG(DEV, if (ul_path_isopen_dirfd(dev->sysfs)) ul_debugobj(dev, " %s ---> is open!", dev->name)); if (!parent && dev->wholedisk) parent = dev->wholedisk; /* Do not print device more than once on --list if tree order is not requested */ if (!(lsblk->flags & LSBLK_TREE) && !lsblk->force_tree_order && dev->is_printed) return; if (lsblk->merge && list_count_entries(&dev->parents) > 1) { if (!lsblk_device_is_last_parent(dev, parent)) return; link_group = 1; } ln = scols_table_new_line(tab, link_group ? NULL : parent_line); if (!ln) err(EXIT_FAILURE, _("failed to allocate output line")); dev->is_printed = 1; if (link_group) { struct lsblk_device *p; struct libscols_line *gr = parent_line; /* Merge all my parents to the one group */ DBG(DEV, ul_debugobj(dev, " grouping parents [--merge]")); lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD); while (lsblk_device_next_parent(dev, &itr, &p) == 0) { if (!p->scols_line) { DBG(DEV, ul_debugobj(dev, " *** ignore '%s' no scols line yet", p->name)); continue; } DBG(DEV, ul_debugobj(dev, " group '%s'", p->name)); scols_table_group_lines(tab, p->scols_line, gr, 0); } /* Link the group -- this makes group->child connection */ DBG(DEV, ul_debugobj(dev, " linking the group [--merge]")); scols_line_link_group(ln, gr, 0); } /* read column specific data and set it to smartcols table line */ for (i = 0; i < ncolumns; i++) { char *data; int id = get_column_id(i); if (lsblk->sort_id != id) data = device_get_data(dev, parent, id, NULL); else { uint64_t sortdata = (uint64_t) -1; data = device_get_data(dev, parent, id, &sortdata); if (data && sortdata != (uint64_t) -1) set_sortdata_u64(ln, i, sortdata); } DBG(DEV, ul_debugobj(dev, " refer data[%zu]=\"%s\"", i, data)); if (data && scols_line_refer_data(ln, i, data)) err(EXIT_FAILURE, _("failed to add output data")); } dev->scols_line = ln; if (dev->npartitions == 0) /* For partitions we often read from parental whole-disk sysfs, * otherwise we can close */ ul_path_close_dirfd(dev->sysfs); lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD); while (lsblk_device_next_child(dev, &itr, &child) == 0) { DBG(DEV, ul_debugobj(dev, "%s -> continue to child", dev->name)); device_to_scols(child, dev, tab, ln); DBG(DEV, ul_debugobj(dev, "%s <- child done", dev->name)); } /* Let's be careful with number of open files */ ul_path_close_dirfd(dev->sysfs); } /* * Walks on tree and adds one line for each device to the smartcols table */ static void devtree_to_scols(struct lsblk_devtree *tr, struct libscols_table *tab) { struct lsblk_iter itr; struct lsblk_device *dev = NULL; lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD); while (lsblk_devtree_next_root(tr, &itr, &dev) == 0) device_to_scols(dev, NULL, tab, NULL); } /* * Reads very basic information about the device from sysfs into the device struct */ static int initialize_device(struct lsblk_device *dev, struct lsblk_device *wholedisk, const char *name) { dev_t devno; DBG(DEV, ul_debugobj(dev, "initialize %s [wholedisk=%p %s]", name, wholedisk, wholedisk ? wholedisk->name : "")); if (sysfs_devname_is_hidden(lsblk->sysroot, name)) { DBG(DEV, ul_debugobj(dev, "%s: hidden, ignore", name)); return -1; } dev->name = xstrdup(name); if (wholedisk) { dev->wholedisk = wholedisk; lsblk_ref_device(wholedisk); } dev->filename = get_device_path(dev); if (!dev->filename) { DBG(DEV, ul_debugobj(dev, "%s: failed to get device path", dev->name)); return -1; } DBG(DEV, ul_debugobj(dev, "%s: filename=%s", dev->name, dev->filename)); devno = __sysfs_devname_to_devno(lsblk->sysroot, dev->name, wholedisk ? wholedisk->name : NULL); if (!devno) { DBG(DEV, ul_debugobj(dev, "%s: unknown device name", dev->name)); return -1; } dev->sysfs = ul_new_sysfs_path(devno, wholedisk ? wholedisk->sysfs : NULL, lsblk->sysroot); if (!dev->sysfs) { DBG(DEV, ul_debugobj(dev, "%s: failed to initialize sysfs handler", dev->name)); return -1; } dev->maj = major(devno); dev->min = minor(devno); dev->size = 0; if (ul_path_read_u64(dev->sysfs, &dev->size, "size") == 0) /* in sectors */ dev->size <<= 9; /* in bytes */ /* Ignore devices of zero size */ if (!lsblk->all_devices && dev->size == 0) { DBG(DEV, ul_debugobj(dev, "zero size device -- ignore")); return -1; } if (is_dm(dev->name)) { ul_path_read_string(dev->sysfs, &dev->dm_name, "dm/name"); if (!dev->dm_name) { DBG(DEV, ul_debugobj(dev, "%s: failed to get dm name", dev->name)); return -1; } } dev->npartitions = sysfs_blkdev_count_partitions(dev->sysfs, dev->name); dev->nholders = ul_path_count_dirents(dev->sysfs, "holders"); dev->nslaves = ul_path_count_dirents(dev->sysfs, "slaves"); DBG(DEV, ul_debugobj(dev, "%s: npartitions=%d, nholders=%d, nslaves=%d", dev->name, dev->npartitions, dev->nholders, dev->nslaves)); /* ignore non-SCSI devices */ if (lsblk->scsi && sysfs_blkdev_scsi_get_hctl(dev->sysfs, NULL, NULL, NULL, NULL)) { DBG(DEV, ul_debugobj(dev, "non-scsi device -- ignore")); return -1; } DBG(DEV, ul_debugobj(dev, "%s: context successfully initialized", dev->name)); return 0; } static struct lsblk_device *devtree_get_device_or_new(struct lsblk_devtree *tr, struct lsblk_device *disk, const char *name) { struct lsblk_device *dev = lsblk_devtree_get_device(tr, name); if (!dev) { dev = lsblk_new_device(); if (!dev) err(EXIT_FAILURE, _("failed to allocate device")); if (initialize_device(dev, disk, name) != 0) { lsblk_unref_device(dev); return NULL; } lsblk_devtree_add_device(tr, dev); lsblk_unref_device(dev); /* keep it referenced by devtree only */ } else DBG(DEV, ul_debugobj(dev, "%s: already processed", name)); return dev; } static int process_dependencies( struct lsblk_devtree *tr, struct lsblk_device *dev, int do_partitions); /* * Read devices from whole-disk device into tree */ static int process_partitions(struct lsblk_devtree *tr, struct lsblk_device *disk) { DIR *dir; struct dirent *d; assert(disk); /* * Do not process further if there are no partitions for * this device or the device itself is a partition. */ if (!disk->npartitions || device_is_partition(disk)) return -EINVAL; DBG(DEV, ul_debugobj(disk, "%s: probe whole-disk for partitions", disk->name)); dir = ul_path_opendir(disk->sysfs, NULL); if (!dir) err(EXIT_FAILURE, _("failed to open device directory in sysfs")); while ((d = xreaddir(dir))) { struct lsblk_device *part; if (!(sysfs_blkdev_is_partition_dirent(dir, d, disk->name))) continue; DBG(DEV, ul_debugobj(disk, " checking %s", d->d_name)); part = devtree_get_device_or_new(tr, disk, d->d_name); if (!part) continue; if (lsblk_device_new_dependence(disk, part) == 0) process_dependencies(tr, part, 0); ul_path_close_dirfd(part->sysfs); } /* For partitions we need parental (whole-disk) sysfs directory pretty * often, so close it now when all is done */ ul_path_close_dirfd(disk->sysfs); DBG(DEV, ul_debugobj(disk, "probe whole-disk for partitions -- done")); closedir(dir); return 0; } static char *get_wholedisk_from_partition_dirent(DIR *dir, struct dirent *d, char *buf, size_t bufsz) { char *p; int len; if ((len = readlinkat(dirfd(dir), d->d_name, buf, bufsz - 1)) < 0) return 0; buf[len] = '\0'; /* The path ends with "...//" */ p = strrchr(buf, '/'); if (!p) return NULL; *p = '\0'; p = strrchr(buf, '/'); if (!p) return NULL; p++; return p; } /* * Reads slaves/holders and partitions for specified device into device tree */ static int process_dependencies( struct lsblk_devtree *tr, struct lsblk_device *dev, int do_partitions) { DIR *dir; struct dirent *d; const char *depname; assert(dev); if (lsblk->nodeps) return 0; /* read all or specified partition */ if (do_partitions && dev->npartitions) process_partitions(tr, dev); DBG(DEV, ul_debugobj(dev, "%s: reading dependencies", dev->name)); if (!(lsblk->inverse ? dev->nslaves : dev->nholders)) { DBG(DEV, ul_debugobj(dev, " ignore (no slaves/holders)")); return 0; } depname = lsblk->inverse ? "slaves" : "holders"; dir = ul_path_opendir(dev->sysfs, depname); if (!dir) { DBG(DEV, ul_debugobj(dev, " ignore (no slaves/holders directory)")); return 0; } ul_path_close_dirfd(dev->sysfs); DBG(DEV, ul_debugobj(dev, " %s: checking for '%s' dependence", dev->name, depname)); while ((d = xreaddir(dir))) { struct lsblk_device *dep = NULL; struct lsblk_device *disk = NULL; /* Is the dependency a partition? */ if (sysfs_blkdev_is_partition_dirent(dir, d, NULL)) { char buf[PATH_MAX]; char *diskname; DBG(DEV, ul_debugobj(dev, " %s: dependence is partition", d->d_name)); diskname = get_wholedisk_from_partition_dirent(dir, d, buf, sizeof(buf)); if (diskname) disk = devtree_get_device_or_new(tr, NULL, diskname); if (!disk) { DBG(DEV, ul_debugobj(dev, " ignore no wholedisk ???")); goto next; } dep = devtree_get_device_or_new(tr, disk, d->d_name); if (!dep) goto next; if (lsblk_device_new_dependence(dev, dep) == 0) process_dependencies(tr, dep, 1); if (lsblk->inverse && lsblk_device_new_dependence(dep, disk) == 0) process_dependencies(tr, disk, 0); } /* The dependency is a whole device. */ else { DBG(DEV, ul_debugobj(dev, " %s: %s: dependence is whole-disk", dev->name, d->d_name)); dep = devtree_get_device_or_new(tr, NULL, d->d_name); if (!dep) goto next; if (lsblk_device_new_dependence(dev, dep) == 0) /* For inverse tree we don't want to show partitions * if the dependence is on whole-disk */ process_dependencies(tr, dep, lsblk->inverse ? 0 : 1); } next: if (dep && dep->sysfs) ul_path_close_dirfd(dep->sysfs); if (disk && disk->sysfs) ul_path_close_dirfd(disk->sysfs); } closedir(dir); DBG(DEV, ul_debugobj(dev, "%s: checking for '%s' -- done", dev->name, depname)); return 0; } /* * Defines the device as root node in the device tree and walks on all dependencies of the device. */ static int __process_one_device(struct lsblk_devtree *tr, char *devname, dev_t devno) { struct lsblk_device *dev = NULL; struct lsblk_device *disk = NULL; char buf[PATH_MAX + 1], *name = NULL, *diskname = NULL; int real_part = 0, rc = -EINVAL; if (devno == 0 && devname) { struct stat st; DBG(DEV, ul_debug("%s: reading alone device", devname)); if (stat(devname, &st) || !S_ISBLK(st.st_mode)) { warnx(_("%s: not a block device"), devname); goto leave; } devno = st.st_rdev; } else if (devno) { DBG(DEV, ul_debug("%d:%d: reading alone device", major(devno), minor(devno))); } else { assert(devno || devname); return -EINVAL; } /* TODO: sysfs_devno_to_devname() internally initializes path_cxt, it * would be better to use ul_new_sysfs_path() + sysfs_blkdev_get_name() * and reuse path_cxt for initialize_device() */ name = sysfs_devno_to_devname(devno, buf, sizeof(buf)); if (!name) { if (devname) warn(_("%s: failed to get sysfs name"), devname); goto leave; } name = xstrdup(name); if (!strncmp(name, "dm-", 3)) { /* dm mapping is never a real partition! */ real_part = 0; } else { dev_t diskno = 0; if (blkid_devno_to_wholedisk(devno, buf, sizeof(buf), &diskno)) { warn(_("%s: failed to get whole-disk device number"), name); goto leave; } diskname = buf; real_part = devno != diskno; } if (!real_part) { /* * Device is not a partition. */ DBG(DEV, ul_debug(" non-partition")); dev = devtree_get_device_or_new(tr, NULL, name); if (!dev) goto leave; lsblk_devtree_add_root(tr, dev); process_dependencies(tr, dev, !lsblk->inverse); } else { /* * Partition, read sysfs name of the disk device */ DBG(DEV, ul_debug(" partition")); disk = devtree_get_device_or_new(tr, NULL, diskname); if (!disk) goto leave; dev = devtree_get_device_or_new(tr, disk, name); if (!dev) goto leave; lsblk_devtree_add_root(tr, dev); process_dependencies(tr, dev, 1); if (lsblk->inverse && lsblk_device_new_dependence(dev, disk) == 0) process_dependencies(tr, disk, 0); else ul_path_close_dirfd(disk->sysfs); } rc = 0; leave: if (dev && dev->sysfs) ul_path_close_dirfd(dev->sysfs); if (disk && disk->sysfs) ul_path_close_dirfd(disk->sysfs); free(name); return rc; } static int process_one_device(struct lsblk_devtree *tr, char *devname) { assert(devname); return __process_one_device(tr, devname, 0); } /* * The /sys/block contains only root devices, and no partitions. It seems more * simple to scan /sys/dev/block where are all devices without exceptions to get * top-level devices for the reverse tree. */ static int process_all_devices_inverse(struct lsblk_devtree *tr) { DIR *dir; struct dirent *d; struct path_cxt *pc = ul_new_path(_PATH_SYS_DEVBLOCK); assert(lsblk->inverse); if (!pc) err(EXIT_FAILURE, _("failed to allocate /sys handler")); ul_path_set_prefix(pc, lsblk->sysroot); dir = ul_path_opendir(pc, NULL); if (!dir) goto done; DBG(DEV, ul_debug("iterate on " _PATH_SYS_DEVBLOCK)); while ((d = xreaddir(dir))) { dev_t devno; int maj, min; DBG(DEV, ul_debug(" %s dentry", d->d_name)); if (sscanf(d->d_name, "%d:%d", &maj, &min) != 2) continue; devno = makedev(maj, min); if (is_maj_excluded(maj) || !is_maj_included(maj)) continue; if (ul_path_countf_dirents(pc, "%s/holders", d->d_name) != 0) continue; if (sysfs_devno_count_partitions(devno) != 0) continue; __process_one_device(tr, NULL, devno); } closedir(dir); done: ul_unref_path(pc); DBG(DEV, ul_debug("iterate on " _PATH_SYS_DEVBLOCK " -- done")); return 0; } /* * Reads root nodes (devices) from /sys/block into devices tree */ static int process_all_devices(struct lsblk_devtree *tr) { DIR *dir; struct dirent *d; struct path_cxt *pc; assert(lsblk->inverse == 0); pc = ul_new_path(_PATH_SYS_BLOCK); if (!pc) err(EXIT_FAILURE, _("failed to allocate /sys handler")); ul_path_set_prefix(pc, lsblk->sysroot); dir = ul_path_opendir(pc, NULL); if (!dir) goto done; DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK)); while ((d = xreaddir(dir))) { struct lsblk_device *dev = NULL; DBG(DEV, ul_debug(" %s dentry", d->d_name)); dev = devtree_get_device_or_new(tr, NULL, d->d_name); if (!dev) goto next; /* remove unwanted devices */ if (is_maj_excluded(dev->maj) || !is_maj_included(dev->maj)) { DBG(DEV, ul_debug(" %s: ignore (by filter)", d->d_name)); lsblk_devtree_remove_device(tr, dev); dev = NULL; goto next; } if (dev->nslaves) { DBG(DEV, ul_debug(" %s: ignore (in-middle)", d->d_name)); goto next; } lsblk_devtree_add_root(tr, dev); process_dependencies(tr, dev, 1); next: /* Let's be careful with number of open files */ if (dev && dev->sysfs) ul_path_close_dirfd(dev->sysfs); } closedir(dir); done: ul_unref_path(pc); DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK " -- done")); return 0; } /* * Parses major numbers as specified on lsblk command line */ 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; } } /* * Parses major numbers as specified on lsblk command line * (TODO: what about refactor and merge parse_excludes() and parse_includes().) */ 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 device_set_dedupkey( struct lsblk_device *dev, struct lsblk_device *parent, int id) { struct lsblk_iter itr; struct lsblk_device *child = NULL; dev->dedupkey = device_get_data(dev, parent, id, NULL); if (dev->dedupkey) DBG(DEV, ul_debugobj(dev, "%s: de-duplication key: %s", dev->name, dev->dedupkey)); if (dev->npartitions == 0) /* For partitions we often read from parental whole-disk sysfs, * otherwise we can close */ ul_path_close_dirfd(dev->sysfs); lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD); while (lsblk_device_next_child(dev, &itr, &child) == 0) device_set_dedupkey(child, dev, id); /* Let's be careful with number of open files */ ul_path_close_dirfd(dev->sysfs); } static void devtree_set_dedupkeys(struct lsblk_devtree *tr, int id) { struct lsblk_iter itr; struct lsblk_device *dev = NULL; lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD); while (lsblk_devtree_next_root(tr, &itr, &dev) == 0) device_set_dedupkey(dev, NULL, id); } 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(_(" -D, --discard print discard capabilities\n"), out); fputs(_(" -E, --dedup de-duplicate output by \n"), out); fputs(_(" -I, --include show only devices with specified major numbers\n"), out); fputs(_(" -J, --json use JSON output format\n"), out); fputs(_(" -O, --output-all output all columns\n"), out); fputs(_(" -P, --pairs use key=\"value\" output format\n"), out); fputs(_(" -S, --scsi output info about SCSI devices\n"), out); fputs(_(" -T, --tree[=] use tree format output\n"), 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(_(" -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(_(" -l, --list use list format output\n"), out); fputs(_(" -M, --merge group parents of sub-trees (usable for RAIDs, Multi-path)\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(_(" -p, --paths print complete device path\n"), out); fputs(_(" -r, --raw use raw output format\n"), out); fputs(_(" -s, --inverse inverse dependencies\n"), out); fputs(_(" -t, --topology output info about topology\n"), out); fputs(_(" -z, --zoned print zone model\n"), out); fputs(_(" -x, --sort sort output by \n"), out); fputs(_(" --sysroot use specified directory as system root\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, .dedup_id = -1, .flags = LSBLK_TREE, .tree_id = COL_NAME }; struct lsblk_devtree *tr = NULL; int c, status = EXIT_FAILURE; char *outarg = NULL; size_t i; int force_tree = 0, has_tree_col = 0; enum { OPT_SYSROOT = CHAR_MAX + 1 }; 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' }, { "dedup", required_argument, NULL, 'E' }, { "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' }, { "merge", no_argument, NULL, 'M' }, { "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' }, { "sysroot", required_argument, NULL, OPT_SYSROOT }, { "tree", optional_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','o' }, { '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); close_stdout_atexit(); lsblk = &_ls; lsblk_init_debug(); while((c = getopt_long(argc, argv, "abdDzE:e:fhJlnMmo:OpPiI:rstVST::x:", 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 'J': lsblk->flags |= LSBLK_JSON; break; case 'l': lsblk->flags &= ~LSBLK_TREE; /* disable the default */ break; case 'M': lsblk->merge = 1; 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_FSVERSION); add_uniq_column(COL_LABEL); add_uniq_column(COL_UUID); add_uniq_column(COL_FSAVAIL); add_uniq_column(COL_FSUSEPERC); 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_SERIAL); add_uniq_column(COL_TRANSPORT); break; case 'T': force_tree = 1; if (optarg) { if (*optarg == '=') optarg++; lsblk->tree_id = column_name_to_id(optarg, strlen(optarg)); } break; case OPT_SYSROOT: lsblk->sysroot = optarg; break; case 'E': lsblk->dedup_id = column_name_to_id(optarg, strlen(optarg)); if (lsblk->dedup_id >= 0) break; errtryhelp(EXIT_FAILURE); break; 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; errtryhelp(EXIT_FAILURE); break; case 'h': usage(); case 'V': print_version(EXIT_SUCCESS); 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,raw,pairs} --list we still follow parent->child relation */ if (!(lsblk->flags & LSBLK_TREE) && (lsblk->inverse || lsblk->flags & LSBLK_EXPORT || lsblk->flags & LSBLK_RAW)) 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; } if (lsblk->dedup_id >= 0 && column_id_to_number(lsblk->dedup_id) < 0) { /* the deduplication column is not between output columns -- add as hidden */ add_column(lsblk->dedup_id); lsblk->dedup_hidden = 1; } lsblk_mnt_init(); scols_init_debug(0); ul_path_init_debug(); /* * 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) && has_tree_col == 0 && id == lsblk->tree_id) { fl |= SCOLS_FL_TREE; fl &= ~SCOLS_FL_RIGHT; has_tree_col = 1; } if (lsblk->sort_hidden && lsblk->sort_id == id) fl |= SCOLS_FL_HIDDEN; if (lsblk->dedup_hidden && lsblk->dedup_id == id) fl |= SCOLS_FL_HIDDEN; if (force_tree && lsblk->flags & LSBLK_JSON && has_tree_col == 0 && i + 1 == ncolumns) /* The "--tree --json" specified, but no column with * SCOLS_FL_TREE yet; force it for the last column */ fl |= SCOLS_FL_TREE; 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->type == COLTYPE_NUM ? cmp_u64_cells : ci->type == COLTYPE_SIZE ? cmp_u64_cells : ci->type == COLTYPE_SORTNUM ? cmp_u64_cells : scols_cmpstr_cells, NULL); } if (lsblk->flags & LSBLK_JSON) { switch (ci->type) { case COLTYPE_SIZE: if (!lsblk->bytes) break; /* fallthrough */ case COLTYPE_NUM: scols_column_set_json_type(cl, SCOLS_JSON_NUMBER); break; case COLTYPE_BOOL: scols_column_set_json_type(cl, SCOLS_JSON_BOOLEAN); break; default: scols_column_set_json_type(cl, SCOLS_JSON_STRING); break; } } } tr = lsblk_new_devtree(); if (!tr) err(EXIT_FAILURE, _("failed to allocate device tree")); if (optind == argc) { int rc = lsblk->inverse ? process_all_devices_inverse(tr) : process_all_devices(tr); status = rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE; } else { int cnt = 0, cnt_err = 0; while (optind < argc) { if (process_one_device(tr, 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->dedup_id > -1) { devtree_set_dedupkeys(tr, lsblk->dedup_id); lsblk_devtree_deduplicate_devices(tr); } devtree_to_scols(tr, lsblk->table); 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); lsblk_mnt_deinit(); lsblk_properties_deinit(); lsblk_unref_devtree(tr); return status; }