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-rw-r--r--misc-utils/lsblk.c2486
1 files changed, 2486 insertions, 0 deletions
diff --git a/misc-utils/lsblk.c b/misc-utils/lsblk.c
new file mode 100644
index 0000000..fae918b
--- /dev/null
+++ b/misc-utils/lsblk.c
@@ -0,0 +1,2486 @@
+/*
+ * lsblk(8) - list block devices
+ *
+ * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
+ * Written by Milan Broz <gmazyland@gmail.com>
+ * Karel Zak <kzak@redhat.com>
+ *
+ * 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 <stdio.h>
+#include <errno.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <stdarg.h>
+#include <locale.h>
+#include <pwd.h>
+#include <grp.h>
+#include <ctype.h>
+#include <assert.h>
+
+#include <blkid.h>
+
+#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 "loopdev.h"
+#include "buffer.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_ALIOFF = 0,
+ COL_IDLINK,
+ COL_ID,
+ COL_DALIGN,
+ COL_DAX,
+ COL_DGRAN,
+ COL_DISKSEQ,
+ COL_DMAX,
+ COL_DZERO,
+ COL_FSAVAIL,
+ COL_FSROOTS,
+ COL_FSSIZE,
+ COL_FSTYPE,
+ COL_FSUSED,
+ COL_FSUSEPERC,
+ COL_FSVERSION,
+ COL_GROUP,
+ COL_HCTL,
+ COL_HOTPLUG,
+ COL_KNAME,
+ COL_LABEL,
+ COL_LOGSEC,
+ COL_MAJMIN,
+ COL_MINIO,
+ COL_MODE,
+ COL_MODEL,
+ COL_MQ,
+ COL_NAME,
+ COL_OPTIO,
+ COL_OWNER,
+ COL_PARTFLAGS,
+ COL_PARTLABEL,
+ COL_PARTN,
+ COL_PARTTYPE,
+ COL_PARTTYPENAME,
+ COL_PARTUUID,
+ COL_PATH,
+ COL_PHYSEC,
+ COL_PKNAME,
+ COL_PTTYPE,
+ COL_PTUUID,
+ COL_RA,
+ COL_RAND,
+ COL_REV,
+ COL_RM,
+ COL_RO,
+ COL_ROTA,
+ COL_RQ_SIZE,
+ COL_SCHED,
+ COL_SERIAL,
+ COL_SIZE,
+ COL_START,
+ COL_STATE,
+ COL_SUBSYS,
+ COL_TARGET,
+ COL_TARGETS,
+ COL_TRANSPORT,
+ COL_TYPE,
+ COL_UUID,
+ COL_VENDOR,
+ COL_WSAME,
+ COL_WWN,
+ COL_ZONED,
+ COL_ZONE_SZ,
+ COL_ZONE_WGRAN,
+ COL_ZONE_APP,
+ COL_ZONE_NR,
+ COL_ZONE_OMAX,
+ COL_ZONE_AMAX,
+};
+
+/* 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),
+ LSBLK_SHELLVAR = (1 << 6)
+};
+
+/* 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_ALIOFF] = { "ALIGNMENT", 6, SCOLS_FL_RIGHT, N_("alignment offset"), COLTYPE_NUM },
+ [COL_ID] = { "ID", 0.1, SCOLS_FL_NOEXTREMES, N_("udev ID (based on ID-LINK)") },
+ [COL_IDLINK] = { "ID-LINK", 0.1, SCOLS_FL_NOEXTREMES, N_("the shortest udev /dev/disk/by-id link name") },
+ [COL_DALIGN] = { "DISC-ALN", 6, SCOLS_FL_RIGHT, N_("discard alignment offset"), COLTYPE_NUM },
+ [COL_DAX] = { "DAX", 1, SCOLS_FL_RIGHT, N_("dax-capable device"), COLTYPE_BOOL },
+ [COL_DGRAN] = { "DISC-GRAN", 6, SCOLS_FL_RIGHT, N_("discard granularity"), COLTYPE_SIZE },
+ [COL_DISKSEQ] = { "DISK-SEQ", 1, SCOLS_FL_RIGHT, N_("disk sequence number"), COLTYPE_NUM },
+ [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_FSAVAIL] = { "FSAVAIL", 5, SCOLS_FL_RIGHT, N_("filesystem size available"), COLTYPE_SIZE },
+ [COL_FSROOTS] = { "FSROOTS", 0.1, SCOLS_FL_WRAP, N_("mounted filesystem roots") },
+ [COL_FSSIZE] = { "FSSIZE", 5, SCOLS_FL_RIGHT, N_("filesystem size"), COLTYPE_SIZE },
+ [COL_FSTYPE] = { "FSTYPE", 0.1, SCOLS_FL_TRUNC, N_("filesystem type") },
+ [COL_FSUSED] = { "FSUSED", 5, SCOLS_FL_RIGHT, N_("filesystem size used"), COLTYPE_SIZE },
+ [COL_FSUSEPERC] = { "FSUSE%", 3, SCOLS_FL_RIGHT, N_("filesystem use percentage") },
+ [COL_FSVERSION] = { "FSVER", 0.1, SCOLS_FL_TRUNC, N_("filesystem version") },
+ [COL_GROUP] = { "GROUP", 0.1, SCOLS_FL_TRUNC, N_("group name") },
+ [COL_HCTL] = { "HCTL", 10, 0, N_("Host:Channel:Target:Lun for SCSI") },
+ [COL_HOTPLUG] = { "HOTPLUG", 1, SCOLS_FL_RIGHT, N_("removable or hotplug device (usb, pcmcia, ...)"), COLTYPE_BOOL },
+ [COL_KNAME] = { "KNAME", 0.3, 0, N_("internal kernel device name") },
+ [COL_LABEL] = { "LABEL", 0.1, 0, N_("filesystem LABEL") },
+ [COL_LOGSEC] = { "LOG-SEC", 7, SCOLS_FL_RIGHT, N_("logical sector size"), COLTYPE_NUM },
+ [COL_MAJMIN] = { "MAJ:MIN", 6, 0, N_("major:minor device number"), COLTYPE_SORTNUM },
+ [COL_MINIO] = { "MIN-IO", 6, SCOLS_FL_RIGHT, N_("minimum I/O size"), COLTYPE_NUM },
+ [COL_MODEL] = { "MODEL", 0.1, SCOLS_FL_TRUNC, N_("device identifier") },
+ [COL_MODE] = { "MODE", 10, 0, N_("device node permissions") },
+ [COL_MQ] = { "MQ", 3, SCOLS_FL_RIGHT, N_("device queues") },
+ [COL_NAME] = { "NAME", 0.25, SCOLS_FL_NOEXTREMES, N_("device name") },
+ [COL_OPTIO] = { "OPT-IO", 6, SCOLS_FL_RIGHT, N_("optimal I/O size"), COLTYPE_NUM },
+ [COL_OWNER] = { "OWNER", 0.1, SCOLS_FL_TRUNC, N_("user name"), },
+ [COL_PARTFLAGS] = { "PARTFLAGS", 36, 0, N_("partition flags") },
+ [COL_PARTLABEL] = { "PARTLABEL", 0.1, 0, N_("partition LABEL") },
+ [COL_PARTN] = { "PARTN", 2, SCOLS_FL_RIGHT, N_("partition number as read from the partition table"), COLTYPE_NUM },
+ [COL_PARTTYPENAME] = { "PARTTYPENAME", 0.1, 0, N_("partition type name") },
+ [COL_PARTTYPE] = { "PARTTYPE", 36, 0, N_("partition type code or UUID") },
+ [COL_PARTUUID] = { "PARTUUID", 36, 0, N_("partition UUID") },
+ [COL_PATH] = { "PATH", 0.3, 0, N_("path to the device node") },
+ [COL_PHYSEC] = { "PHY-SEC", 7, SCOLS_FL_RIGHT, N_("physical sector size"), COLTYPE_NUM },
+ [COL_PKNAME] = { "PKNAME", 0.3, 0, N_("internal parent kernel device name") },
+ [COL_PTTYPE] = { "PTTYPE", 0.1, 0, N_("partition table type") },
+ [COL_PTUUID] = { "PTUUID", 36, 0, N_("partition table identifier (usually UUID)") },
+ [COL_RAND] = { "RAND", 1, SCOLS_FL_RIGHT, N_("adds randomness"), COLTYPE_BOOL },
+ [COL_RA] = { "RA", 3, SCOLS_FL_RIGHT, N_("read-ahead of the device"), COLTYPE_NUM },
+ [COL_REV] = { "REV", 4, SCOLS_FL_RIGHT, N_("device revision") },
+ [COL_RM] = { "RM", 1, SCOLS_FL_RIGHT, N_("removable device"), COLTYPE_BOOL },
+ [COL_ROTA] = { "ROTA", 1, SCOLS_FL_RIGHT, N_("rotational device"), COLTYPE_BOOL },
+ [COL_RO] = { "RO", 1, SCOLS_FL_RIGHT, N_("read-only device"), COLTYPE_BOOL },
+ [COL_RQ_SIZE]= { "RQ-SIZE", 5, SCOLS_FL_RIGHT, N_("request queue size"), COLTYPE_NUM },
+ [COL_SCHED] = { "SCHED", 0.1, 0, N_("I/O scheduler name") },
+ [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_START] = { "START", 5, SCOLS_FL_RIGHT, N_("partition start offset"), COLTYPE_NUM },
+ [COL_STATE] = { "STATE", 7, SCOLS_FL_TRUNC, N_("state of the device") },
+ [COL_SUBSYS] = { "SUBSYSTEMS", 0.1, SCOLS_FL_NOEXTREMES, N_("de-duplicated chain of subsystems") },
+ [COL_TARGETS] = { "MOUNTPOINTS", 0.10, SCOLS_FL_WRAP | SCOLS_FL_NOEXTREMES, N_("all locations where device is mounted") },
+ [COL_TARGET] = { "MOUNTPOINT", 0.10, SCOLS_FL_TRUNC | SCOLS_FL_NOEXTREMES, N_("where the device is mounted") },
+ [COL_TRANSPORT] = { "TRAN", 6, 0, N_("device transport type") },
+ [COL_TYPE] = { "TYPE", 4, 0, N_("device type") },
+ [COL_UUID] = { "UUID", 36, 0, N_("filesystem UUID") },
+ [COL_VENDOR] = { "VENDOR", 0.1, SCOLS_FL_TRUNC, N_("device vendor") },
+ [COL_WSAME] = { "WSAME", 6, SCOLS_FL_RIGHT, N_("write same max bytes"), COLTYPE_SIZE },
+ [COL_WWN] = { "WWN", 18, 0, N_("unique storage identifier") },
+ [COL_ZONED] = { "ZONED", 0.3, 0, N_("zone model") },
+ [COL_ZONE_SZ] = { "ZONE-SZ", 9, SCOLS_FL_RIGHT, N_("zone size"), COLTYPE_SIZE },
+ [COL_ZONE_WGRAN] = { "ZONE-WGRAN", 10, SCOLS_FL_RIGHT, N_("zone write granularity"), COLTYPE_SIZE },
+ [COL_ZONE_APP] = { "ZONE-APP", 11, SCOLS_FL_RIGHT, N_("zone append max bytes"), COLTYPE_SIZE },
+ [COL_ZONE_NR] = { "ZONE-NR", 8, SCOLS_FL_RIGHT, N_("number of zones"), COLTYPE_NUM },
+ [COL_ZONE_OMAX] = { "ZONE-OMAX", 10, SCOLS_FL_RIGHT, N_("maximum number of open zones"), COLTYPE_NUM },
+ [COL_ZONE_AMAX] = { "ZONE-AMAX", 10, SCOLS_FL_RIGHT, N_("maximum number of active zones"), COLTYPE_NUM },
+};
+
+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 const 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";
+ } else if (strncmp(dev->name, "vd", 2) == 0)
+ trans = "virtio";
+ else if (strncmp(dev->name, "mmcblk", 6) == 0)
+ trans = "mmc";
+
+ return trans;
+}
+
+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;
+
+ if (!dev->fsstat.f_blocks) {
+ const char *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;
+
+ dev->removable = sysfs_blkdev_is_removable(dev->sysfs);
+
+ if (!dev->removable && parent) {
+ pc = sysfs_blkdev_get_parent(dev->sysfs);
+ if (!pc)
+ goto done;
+
+ if (pc == parent->sysfs)
+ /* dev is partition and parent is whole-disk */
+ dev->removable = is_removable_device(parent, NULL);
+ else
+ /* parent is something else, use sysfs parent */
+ dev->removable = sysfs_blkdev_is_removable(pc);
+ }
+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;
+}
+
+static void device_read_bytes(struct lsblk_device *dev, char *path, char **str,
+ uint64_t *sortdata)
+{
+ uint64_t x;
+
+ if (lsblk->bytes) {
+ ul_path_read_string(dev->sysfs, str, path);
+ if (sortdata)
+ str2u64(*str, sortdata);
+ return;
+ }
+
+ if (ul_path_read_u64(dev->sysfs, &x, path) == 0) {
+ *str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
+ if (sortdata)
+ *sortdata = x;
+ }
+}
+
+static void process_mq(struct lsblk_device *dev, char **str)
+{
+ unsigned int queues = 0;
+
+ DBG(DEV, ul_debugobj(dev, "%s: process mq", dev->name));
+
+ queues = ul_path_count_dirents(dev->sysfs, "mq");
+ if (!queues) {
+ *str = xstrdup("1");
+ DBG(DEV, ul_debugobj(dev, "%s: no mq supported, use a single queue", dev->name));
+ return;
+ }
+
+ DBG(DEV, ul_debugobj(dev, "%s: has %d queues", dev->name, queues));
+ xasprintf(str, "%3u", queues);
+}
+
+/*
+ * 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:
+ {
+ const char *p = lsblk_device_get_mountpoint(dev);
+ if (p)
+ str = xstrdup(p);
+ break;
+ }
+ case COL_TARGETS:
+ {
+ size_t i, n = 0;
+ struct ul_buffer buf = UL_INIT_BUFFER;
+ struct libmnt_fs **fss = lsblk_device_get_filesystems(dev, &n);
+
+ for (i = 0; i < n; i++) {
+ struct libmnt_fs *fs = fss[i];
+ if (mnt_fs_is_swaparea(fs))
+ ul_buffer_append_string(&buf, "[SWAP]");
+ else
+ ul_buffer_append_string(&buf, mnt_fs_get_target(fs));
+ if (i + 1 < n)
+ ul_buffer_append_data(&buf, "\n", 1);
+ }
+ str = ul_buffer_get_data(&buf, NULL, NULL);
+ break;
+ }
+ case COL_FSROOTS:
+ {
+ size_t i, n = 0;
+ struct ul_buffer buf = UL_INIT_BUFFER;
+ struct libmnt_fs **fss = lsblk_device_get_filesystems(dev, &n);
+
+ for (i = 0; i < n; i++) {
+ struct libmnt_fs *fs = fss[i];
+ const char *root = mnt_fs_get_root(fs);
+ if (mnt_fs_is_swaparea(fs))
+ continue;
+ ul_buffer_append_string(&buf, root ? root : "/");
+ if (i + 1 < n)
+ ul_buffer_append_data(&buf, "\n", 1);
+ }
+ str = ul_buffer_get_data(&buf, NULL, 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_PARTN:
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->partn)
+ str = xstrdup(prop->partn);
+ break;
+ case COL_WWN:
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->wwn)
+ str = xstrdup(prop->wwn);
+ break;
+ case COL_IDLINK:
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->idlink)
+ str = xstrdup(prop->idlink);
+ break;
+ case COL_ID:
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->idlink) {
+ /* skip bus/subsystem prefix */
+ const char *p = strchr(prop->idlink, '-');
+ str = p && *(p + 1) ? xstrdup(p+1) : xstrdup(prop->idlink);
+ }
+ 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) {
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->revision)
+ str = xstrdup(prop->revision);
+ else
+ 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_START:
+ ul_path_read_string(dev->sysfs, &str, "start");
+ if (sortdata)
+ str2u64(str, sortdata);
+ 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:
+ {
+ const char *trans = get_transport(dev);
+ if (trans)
+ str = xstrdup(trans);
+ 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:
+ device_read_bytes(dev, "queue/discard_max_bytes", &str, sortdata);
+ 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:
+ device_read_bytes(dev, "queue/write_same_max_bytes", &str, sortdata);
+ if (!str)
+ str = xstrdup("0");
+ break;
+ case COL_ZONED:
+ ul_path_read_string(dev->sysfs, &str, "queue/zoned");
+ break;
+ case COL_ZONE_SZ:
+ {
+ uint64_t x;
+
+ if (ul_path_read_u64(dev->sysfs, &x, "queue/chunk_sectors") == 0) {
+ x <<= 9;
+ if (lsblk->bytes)
+ xasprintf(&str, "%ju", x);
+ else
+ str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
+ if (sortdata)
+ *sortdata = x;
+ }
+ break;
+ }
+ case COL_ZONE_WGRAN:
+ device_read_bytes(dev, "queue/zone_write_granularity", &str, sortdata);
+ break;
+ case COL_ZONE_APP:
+ device_read_bytes(dev, "queue/zone_append_max_bytes", &str, sortdata);
+ break;
+ case COL_ZONE_NR:
+ ul_path_read_string(dev->sysfs, &str, "queue/nr_zones");
+ if (sortdata)
+ str2u64(str, sortdata);
+ break;
+ case COL_ZONE_OMAX:
+ ul_path_read_string(dev->sysfs, &str, "queue/max_open_zones");
+ if (!str)
+ str = xstrdup("0");
+ if (sortdata)
+ str2u64(str, sortdata);
+ break;
+ case COL_ZONE_AMAX:
+ ul_path_read_string(dev->sysfs, &str, "queue/max_active_zones");
+ if (!str)
+ str = xstrdup("0");
+ if (sortdata)
+ str2u64(str, sortdata);
+ break;
+ case COL_DAX:
+ ul_path_read_string(dev->sysfs, &str, "queue/dax");
+ break;
+ case COL_MQ:
+ process_mq(dev, &str);
+ break;
+ case COL_DISKSEQ:
+ ul_path_read_string(dev->sysfs, &str, "diskseq");
+ if (sortdata)
+ str2u64(str, sortdata);
+ 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);
+}
+
+static int ignore_empty(struct lsblk_device *dev)
+{
+ /* show all non-empty devices */
+ if (dev->size)
+ return 0;
+
+ if (lsblk->noempty && dev->size == 0)
+ return 1;
+
+ /* ignore empty loop devices without backing file */
+ if (dev->maj == LOOPDEV_MAJOR &&
+ !loopdev_has_backing_file(dev->filename))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * 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 && ignore_empty(dev)) {
+ 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;
+ }
+
+ /* ignore non-NVMe devices */
+ if (lsblk->nvme) {
+ const char *transport = get_transport(dev);
+
+ if (!transport || strcmp(transport, "nvme")) {
+ DBG(DEV, ul_debugobj(dev, "non-nvme device -- ignore"));
+ return -1;
+ }
+ }
+
+ /* ignore non-virtio devices */
+ if (lsblk->virtio) {
+ const char *transport = get_transport(dev);
+
+ if (!transport || strcmp(transport, "virtio")) {
+ DBG(DEV, ul_debugobj(dev, "non-virtio 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 struct lsblk_device *devtree_pktcdvd_get_dep(
+ struct lsblk_devtree *tr,
+ struct lsblk_device *dev,
+ int want_slave)
+{
+ char buf[PATH_MAX], *name;
+ dev_t devno;
+
+ devno = lsblk_devtree_pktcdvd_get_mate(tr,
+ makedev(dev->maj, dev->min), !want_slave);
+ if (!devno)
+ return NULL;
+
+ name = sysfs_devno_to_devname(devno, buf, sizeof(buf));
+ if (!name)
+ return NULL;
+
+ return devtree_get_device_or_new(tr, NULL, name);
+}
+
+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 ".../<device>/<partition>" */
+ 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;
+ struct lsblk_device *dep = NULL;
+
+ 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)"));
+ goto done;
+ }
+
+ depname = lsblk->inverse ? "slaves" : "holders";
+ dir = ul_path_opendir(dev->sysfs, depname);
+ if (!dir) {
+ DBG(DEV, ul_debugobj(dev, " ignore (no slaves/holders directory)"));
+ goto done;
+ }
+ 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 *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);
+done:
+ dep = devtree_pktcdvd_get_dep(tr, dev, lsblk->inverse);
+
+ if (dep && lsblk_device_new_dependence(dev, dep) == 0) {
+ lsblk_devtree_remove_root(tr, dep);
+ process_dependencies(tr, dep, lsblk->inverse ? 0 : 1);
+ }
+
+ 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] [<device> ...]\n"), program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("List information about block devices.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -A, --noempty don't print empty devices\n"), out);
+ fputs(_(" -D, --discard print discard capabilities\n"), out);
+ fputs(_(" -E, --dedup <column> de-duplicate output by <column>\n"), out);
+ fputs(_(" -I, --include <list> show only devices with specified major numbers\n"), out);
+ fputs(_(" -J, --json use JSON output format\n"), out);
+ fputs(_(" -M, --merge group parents of sub-trees (usable for RAIDs, Multi-path)\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(_(" -N, --nvme output info about NVMe devices\n"), out);
+ fputs(_(" -v, --virtio output info about virtio devices\n"), out);
+ fputs(_(" -T, --tree[=<column>] 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 <list> 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, --perms output info about permissions\n"), out);
+ fputs(_(" -n, --noheadings don't print headings\n"), out);
+ fputs(_(" -o, --output <list> 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(_(" -w, --width <num> specifies output width as number of characters\n"), out);
+ fputs(_(" -x, --sort <column> sort output by <column>\n"), out);
+ fputs(_(" -y, --shell use column names to be usable as shell variable identifiers\n"), out);
+ fputs(_(" -z, --zoned print zone related information\n"), out);
+ fputs(_(" --sysroot <dir> 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, " %12s %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;
+ unsigned int width = 0;
+ 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' },
+ { "noempty", no_argument, NULL, 'A' },
+ { "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' },
+ { "nvme", no_argument, NULL, 'N' },
+ { "virtio", no_argument, NULL, 'v' },
+ { "sort", required_argument, NULL, 'x' },
+ { "sysroot", required_argument, NULL, OPT_SYSROOT },
+ { "shell", no_argument, NULL, 'y' },
+ { "tree", optional_argument, NULL, 'T' },
+ { "version", no_argument, NULL, 'V' },
+ { "width", required_argument, NULL, 'w' },
+ { 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,
+ "AabdDzE:e:fhJlNnMmo:OpPiI:rstVvST::w:x:y",
+ longopts, NULL)) != -1) {
+
+ err_exclusive_options(c, longopts, excl, excl_st);
+
+ switch(c) {
+ case 'A':
+ lsblk->noempty = 1;
+ break;
+ 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);
+ add_uniq_column(COL_ZONE_SZ);
+ add_uniq_column(COL_ZONE_NR);
+ add_uniq_column(COL_ZONE_AMAX);
+ add_uniq_column(COL_ZONE_OMAX);
+ add_uniq_column(COL_ZONE_APP);
+ add_uniq_column(COL_ZONE_WGRAN);
+ 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 'y':
+ lsblk->flags |= LSBLK_SHELLVAR;
+ 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_TARGETS);
+ 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 'N':
+ lsblk->nodeps = 1;
+ lsblk->nvme = 1;
+ add_uniq_column(COL_NAME);
+ add_uniq_column(COL_TYPE);
+ add_uniq_column(COL_MODEL);
+ add_uniq_column(COL_SERIAL);
+ add_uniq_column(COL_REV);
+ add_uniq_column(COL_TRANSPORT);
+ add_uniq_column(COL_RQ_SIZE);
+ add_uniq_column(COL_MQ);
+ break;
+ case 'v':
+ lsblk->nodeps = 1;
+ lsblk->virtio = 1;
+ add_uniq_column(COL_NAME);
+ add_uniq_column(COL_TYPE);
+ add_uniq_column(COL_TRANSPORT);
+ add_uniq_column(COL_SIZE);
+ add_uniq_column(COL_RQ_SIZE);
+ add_uniq_column(COL_MQ);
+ 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 'w':
+ width = strtou32_or_err(optarg, _("invalid output width number argument"));
+ 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_TARGETS);
+ }
+
+ 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_shellvar(lsblk->table, !!(lsblk->flags & LSBLK_SHELLVAR));
+ 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");
+ if (width) {
+ scols_table_set_termwidth(lsblk->table, width);
+ scols_table_set_termforce(lsblk->table, SCOLS_TERMFORCE_ALWAYS);
+ }
+
+ 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);
+ }
+ /* multi-line cells (now used for MOUNTPOINTS) */
+ if (fl & SCOLS_FL_WRAP) {
+ scols_column_set_wrapfunc(cl,
+ scols_wrapnl_chunksize,
+ scols_wrapnl_nextchunk,
+ NULL);
+ scols_column_set_safechars(cl, "\n");
+ }
+
+ 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:
+ if (fl & SCOLS_FL_WRAP)
+ scols_column_set_json_type(cl, SCOLS_JSON_ARRAY_STRING);
+ else
+ 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;
+}