/*
* lsblk(8) - list block devices
*
- * Copyright (C) 2010,2011,2012 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
* Written by Milan Broz <mbroz@redhat.com>
* Karel Zak <kzak@redhat.com>
*
* 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 <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
-#include <inttypes.h>
#include <stdarg.h>
#include <locale.h>
#include <pwd.h>
#include <grp.h>
#include <ctype.h>
+#include <assert.h>
#include <blkid.h>
-#include <libmount.h>
-#include <libsmartcols.h>
-
-#ifdef HAVE_LIBUDEV
-#include <libudev.h>
-#endif
-
-#include <assert.h>
#include "c.h"
#include "pathnames.h"
#include "strutils.h"
#include "sysfs.h"
#include "closestream.h"
-#include "mangle.h"
#include "optutils.h"
-#include "debug.h"
+#include "lsblk.h"
-static UL_DEBUG_DEFINE_MASK(lsblk);
+UL_DEBUG_DEFINE_MASK(lsblk);
UL_DEBUG_DEFINE_MASKNAMES(lsblk) = UL_DEBUG_EMPTY_MASKNAMES;
-#define LSBLK_DEBUG_INIT (1 << 1)
-#define LSBLK_DEBUG_FILTER (1 << 2)
-#define LSBLK_DEBUG_DEV (1 << 3)
-#define LSBLK_DEBUG_CXT (1 << 4)
-#define LSBLK_DEBUG_ALL 0xFFFF
-
-#define DBG(m, x) __UL_DBG(lsblk, LSBLK_DEBUG_, m, x)
-#define ON_DBG(m, x) __UL_DBG_CALL(lsblk, LSBLK_DEBUG_, m, x)
-
-#define UL_DEBUG_CURRENT_MASK UL_DEBUG_MASK(lsblk)
-#include "debugobj.h"
-
#define LSBLK_EXIT_SOMEOK 64
#define LSBLK_EXIT_ALLFAILED 32
enum {
COL_NAME = 0,
COL_KNAME,
+ COL_PATH,
COL_MAJMIN,
+ COL_FSAVAIL,
+ COL_FSSIZE,
COL_FSTYPE,
+ COL_FSUSED,
+ COL_FSUSEPERC,
COL_TARGET,
COL_LABEL,
COL_UUID,
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_TREE | SCOLS_FL_NOEXTREMES, N_("device name") },
+ [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_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_FSTYPE] = { "FSTYPE", 0.1, SCOLS_FL_TRUNC, N_("filesystem type") },
+
+ [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_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_ZONED] = { "ZONED", 0.3, 0, N_("zone model") },
};
-struct lsblk {
- struct libscols_table *table; /* output table */
- struct libscols_column *sort_col;/* sort output by this column */
- int sort_id;
-
- const char *sysroot;
- int flags; /* LSBLK_* */
-
- unsigned int all_devices:1; /* print all devices, including empty */
- unsigned int bytes:1; /* print SIZE in bytes */
- unsigned int inverse:1; /* print inverse dependencies */
- unsigned int nodeps:1; /* don't print slaves/holders */
- unsigned int scsi:1; /* print only device with HCTL (SCSI) */
- unsigned int paths:1; /* print devnames with "/dev" prefix */
- unsigned int sort_hidden:1; /* sort column not between output columns */
- unsigned int force_tree_order:1;/* sort lines by parent->tree relation */
-};
-
-static struct lsblk *lsblk; /* global handler */
+struct lsblk *lsblk; /* global handler */
-/* columns[] array specifies all currently wanted output column. The columns
+/*
+ * 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 */
+ * 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))
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 struct libmnt_table *mtab, *swaps;
-static struct libmnt_cache *mntcache;
-
-#ifdef HAVE_LIBUDEV
-static struct udev *udev;
-#endif
-
-struct blkdev_cxt {
- struct blkdev_cxt *parent;
-
- struct libscols_line *scols_line;
- struct stat st;
-
- char *name; /* kernel name in /sys/block */
- char *dm_name; /* DM name (dm/block) */
-
- char *filename; /* path to device node */
-
- struct path_cxt *sysfs;
-
- int partition; /* is partition? TRUE/FALSE */
-
- int probed; /* already probed */
- char *fstype; /* detected fs, NULL or "?" if cannot detect */
- char *uuid; /* filesystem UUID (or stack uuid) */
- char *ptuuid; /* partition table UUID */
- char *pttype; /* partition table type */
- char *label; /* filesystem label */
- char *parttype; /* partition type UUID */
- char *partuuid; /* partition UUID */
- char *partlabel; /* partition label */
- char *partflags; /* partition flags */
- char *wwn; /* storage WWN */
- char *serial; /* disk serial number */
-
- int npartitions; /* # of partitions this device has */
- int nholders; /* # of devices mapped directly to this device
- * /sys/block/.../holders */
- int nslaves; /* # of devices this device maps to */
- int maj, min; /* devno */
- int discard; /* supports discard */
-
- uint64_t size; /* device size */
-};
-
-static void lsblk_init_debug(void)
-{
- __UL_INIT_DEBUG_FROM_ENV(lsblk, LSBLK_DEBUG_, 0, LSBLK_DEBUG);
-}
-
static int is_maj_excluded(int maj)
{
size_t i;
return 0;
}
-/* array with IDs of enabled columns */
+/* Converts column sequential number to column ID (COL_*) */
static int get_column_id(int num)
{
assert(num >= 0);
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;
return -1;
}
+/* Converts column ID (COL_*) to column sequential number */
static int column_id_to_number(int id)
{
size_t i;
return -1;
}
-static void reset_blkdev_cxt(struct blkdev_cxt *cxt)
-{
- if (!cxt)
- return;
-
- DBG(CXT, ul_debugobj(cxt, "reset"));
-
- free(cxt->name);
- free(cxt->dm_name);
- free(cxt->filename);
- free(cxt->fstype);
- free(cxt->uuid);
- free(cxt->ptuuid);
- free(cxt->pttype);
- free(cxt->label);
- free(cxt->parttype);
- free(cxt->partuuid);
- free(cxt->partlabel);
- free(cxt->wwn);
- free(cxt->serial);
-
- ul_unref_path(cxt->sysfs);
-
- memset(cxt, 0, sizeof(*cxt));
-}
-
+/* Checks for DM prefix in the device name */
static int is_dm(const char *name)
{
return strncmp(name, "dm-", 3) ? 0 : 1;
}
+/* This is readdir()-like function, but skips "." and ".." directory entries */
static struct dirent *xreaddir(DIR *dp)
{
struct dirent *d;
return d;
}
-static char *get_device_path(struct blkdev_cxt *cxt)
+/* 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(cxt);
- assert(cxt->name);
+ assert(dev);
+ assert(dev->name);
- if (is_dm(cxt->name))
- return __canonicalize_dm_name(lsblk->sysroot, cxt->name);
+ if (is_dm(dev->name))
+ return __canonicalize_dm_name(lsblk->sysroot, dev->name);
- snprintf(path, sizeof(path), "/dev/%s", cxt->name);
+ snprintf(path, sizeof(path), "/dev/%s", dev->name);
sysfs_devname_sys_to_dev(path);
return xstrdup(path);
}
-static int table_parser_errcb(struct libmnt_table *tb __attribute__((__unused__)),
- const char *filename, int line)
-{
- if (filename)
- warnx(_("%s: parse error at line %d -- ignored"), filename, line);
- return 1;
-}
-
-static int is_active_swap(const char *filename)
-{
- if (!swaps) {
- swaps = mnt_new_table();
- if (!swaps)
- return 0;
- if (!mntcache)
- mntcache = mnt_new_cache();
-
- mnt_table_set_parser_errcb(swaps, table_parser_errcb);
- mnt_table_set_cache(swaps, mntcache);
- mnt_table_parse_swaps(swaps, NULL);
- }
-
- return mnt_table_find_srcpath(swaps, filename, MNT_ITER_BACKWARD) != NULL;
-}
-
-static char *get_device_mountpoint(struct blkdev_cxt *cxt)
-{
- struct libmnt_fs *fs;
- const char *fsroot;
-
- assert(cxt);
- assert(cxt->filename);
-
- if (!mtab) {
- mtab = mnt_new_table();
- if (!mtab)
- return NULL;
- if (!mntcache)
- mntcache = mnt_new_cache();
-
- mnt_table_set_parser_errcb(mtab, table_parser_errcb);
- mnt_table_set_cache(mtab, mntcache);
- mnt_table_parse_mtab(mtab, NULL);
- }
-
- /* Note that maj:min in /proc/self/mountinfo does not have to match with
- * devno as returned by stat(), so we have to try devname too
- */
- fs = mnt_table_find_devno(mtab, makedev(cxt->maj, cxt->min), MNT_ITER_BACKWARD);
- if (!fs)
- fs = mnt_table_find_srcpath(mtab, cxt->filename, MNT_ITER_BACKWARD);
- if (!fs)
- return is_active_swap(cxt->filename) ? xstrdup("[SWAP]") : NULL;
-
- /* found */
- fsroot = mnt_fs_get_root(fs);
- if (fsroot && strcmp(fsroot, "/") != 0) {
- /* hmm.. we found bind mount or btrfs subvolume, let's try to
- * get real FS root mountpoint */
- struct libmnt_fs *rfs;
- struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_BACKWARD);
-
- mnt_table_set_iter(mtab, itr, fs);
- while (mnt_table_next_fs(mtab, itr, &rfs) == 0) {
- fsroot = mnt_fs_get_root(rfs);
- if ((!fsroot || strcmp(fsroot, "/") == 0)
- && mnt_fs_match_source(rfs, cxt->filename, mntcache)) {
- fs = rfs;
- break;
- }
- }
- mnt_free_iter(itr);
- }
-
- DBG(DEV, ul_debugobj(cxt, "mountpoint: %s", mnt_fs_get_target(fs)));
- return xstrdup(mnt_fs_get_target(fs));
-}
-
-#ifndef HAVE_LIBUDEV
-static int get_udev_properties(struct blkdev_cxt *cxt
- __attribute__((__unused__)))
-{
- return -1;
-}
-#else
-static int get_udev_properties(struct blkdev_cxt *cxt)
-{
- struct udev_device *dev;
-
- if (cxt->probed)
- return 0; /* already done */
-
- if (!udev)
- udev = udev_new();
- if (!udev)
- return -1;
-
- dev = udev_device_new_from_subsystem_sysname(udev, "block", cxt->name);
- if (dev) {
- const char *data;
-
- if ((data = udev_device_get_property_value(dev, "ID_FS_LABEL_ENC"))) {
- cxt->label = xstrdup(data);
- unhexmangle_string(cxt->label);
- }
- if ((data = udev_device_get_property_value(dev, "ID_FS_UUID_ENC"))) {
- cxt->uuid = xstrdup(data);
- unhexmangle_string(cxt->uuid);
- }
- if ((data = udev_device_get_property_value(dev, "ID_PART_TABLE_UUID")))
- cxt->ptuuid = xstrdup(data);
- if ((data = udev_device_get_property_value(dev, "ID_PART_TABLE_TYPE")))
- cxt->pttype = xstrdup(data);
- if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_NAME"))) {
- cxt->partlabel = xstrdup(data);
- unhexmangle_string(cxt->partlabel);
- }
- if ((data = udev_device_get_property_value(dev, "ID_FS_TYPE")))
- cxt->fstype = xstrdup(data);
- if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_TYPE")))
- cxt->parttype = xstrdup(data);
- if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_UUID")))
- cxt->partuuid = xstrdup(data);
- if ((data = udev_device_get_property_value(dev, "ID_PART_ENTRY_FLAGS")))
- cxt->partflags = xstrdup(data);
-
- data = udev_device_get_property_value(dev, "ID_WWN_WITH_EXTENSION");
- if (!data)
- data = udev_device_get_property_value(dev, "ID_WWN");
- if (data)
- cxt->wwn = xstrdup(data);
-
- if ((data = udev_device_get_property_value(dev, "ID_SERIAL_SHORT")))
- cxt->serial = xstrdup(data);
- udev_device_unref(dev);
- cxt->probed = 1;
- DBG(DEV, ul_debugobj(cxt, "%s: found udev properties", cxt->name));
- }
-
- return cxt->probed == 1 ? 0 : -1;
-
-}
-#endif /* HAVE_LIBUDEV */
-
-static void probe_device(struct blkdev_cxt *cxt)
-{
- blkid_probe pr = NULL;
-
- if (cxt->probed)
- return;
-
- if (!cxt->size)
- return;
-
- /* try udev DB */
- if (get_udev_properties(cxt) == 0)
- return; /* success */
-
- cxt->probed = 1;
-
- /* try libblkid (fallback) */
- if (getuid() != 0)
- return; /* no permissions to read from the device */
-
- pr = blkid_new_probe_from_filename(cxt->filename);
- if (!pr)
- return;
-
- blkid_probe_enable_superblocks(pr, 1);
- blkid_probe_set_superblocks_flags(pr, BLKID_SUBLKS_LABEL |
- BLKID_SUBLKS_UUID |
- BLKID_SUBLKS_TYPE);
- blkid_probe_enable_partitions(pr, 1);
- blkid_probe_set_partitions_flags(pr, BLKID_PARTS_ENTRY_DETAILS);
-
- if (!blkid_do_safeprobe(pr)) {
- const char *data = NULL;
-
- if (!blkid_probe_lookup_value(pr, "TYPE", &data, NULL))
- cxt->fstype = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "UUID", &data, NULL))
- cxt->uuid = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PTUUID", &data, NULL))
- cxt->ptuuid = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PTTYPE", &data, NULL))
- cxt->pttype = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "LABEL", &data, NULL))
- cxt->label = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PART_ENTRY_TYPE", &data, NULL))
- cxt->parttype = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PART_ENTRY_UUID", &data, NULL))
- cxt->partuuid = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PART_ENTRY_NAME", &data, NULL))
- cxt->partlabel = xstrdup(data);
- if (!blkid_probe_lookup_value(pr, "PART_ENTRY_FLAGS", &data, NULL))
- cxt->partflags = xstrdup(data);
- DBG(DEV, ul_debugobj(cxt, "%s: found blkid properties", cxt->name));
- }
-
- blkid_free_probe(pr);
- return;
-}
-
-static int is_readonly_device(struct blkdev_cxt *cxt)
+static int is_readonly_device(struct lsblk_device *dev)
{
int fd, ro = 0;
- if (ul_path_scanf(cxt->sysfs, "ro", "%d", &ro) == 1)
+ if (ul_path_scanf(dev->sysfs, "ro", "%d", &ro) == 1)
return ro;
/* fallback if "ro" attribute does not exist */
- fd = open(cxt->filename, O_RDONLY);
+ fd = open(dev->filename, O_RDONLY);
if (fd != -1) {
if (ioctl(fd, BLKROGET, &ro) != 0)
ro = 0;
return ro;
}
-static char *get_scheduler(struct blkdev_cxt *cxt)
+static char *get_scheduler(struct lsblk_device *dev)
{
char buf[128];
char *p, *res = NULL;
- if (ul_path_read_buffer(cxt->sysfs, buf, sizeof(buf), "queue/scheduler"))
+ if (ul_path_read_buffer(dev->sysfs, buf, sizeof(buf), "queue/scheduler") == 0)
return NULL;
p = strchr(buf, '[');
if (p) {
return res;
}
-static char *get_type(struct blkdev_cxt *cxt)
+static char *get_type(struct lsblk_device *dev)
{
char *res = NULL, *p;
- if (is_dm(cxt->name)) {
+ 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(cxt->sysfs, &dm_uuid, "dm/uuid") == 0
+ if (ul_path_read_string(dev->sysfs, &dm_uuid, "dm/uuid") > 0
&& dm_uuid) {
char *tmp = dm_uuid;
char *dm_uuid_prefix = strsep(&tmp, "-");
/* No UUID or no prefix - just mark it as DM device */
res = xstrdup("dm");
- } else if (!strncmp(cxt->name, "loop", 4)) {
+ } else if (!strncmp(dev->name, "loop", 4)) {
res = xstrdup("loop");
- } else if (!strncmp(cxt->name, "md", 2)) {
+ } else if (!strncmp(dev->name, "md", 2)) {
char *md_level = NULL;
- ul_path_read_string(cxt->sysfs, &md_level, "md/level");
+ 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(cxt->sysfs, &x, "device/type") == 0)
+ if (ul_path_read_s32(dev->sysfs, &x, "device/type") == 0)
type = blkdev_scsi_type_to_name(x);
if (!type)
- type = cxt->partition ? "part" : "disk";
+ type = "disk";
res = xstrdup(type);
}
}
/* Thanks to lsscsi code for idea of detection logic used here */
-static char *get_transport(struct blkdev_cxt *cxt)
+static char *get_transport(struct lsblk_device *dev)
{
- struct path_cxt *sysfs = cxt->sysfs;
+ struct path_cxt *sysfs = dev->sysfs;
char *attr = NULL;
const char *trans = NULL;
trans = "ata";
free(attr);
- } else if (strncmp(cxt->name, "nvme", 4) == 0)
+ } else if (strncmp(dev->name, "nvme", 4) == 0)
trans = "nvme";
return trans ? xstrdup(trans) : NULL;
}
-static char *get_subsystems(struct blkdev_cxt *cxt)
+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(cxt->sysfs, path, sizeof(path));
+ chain = sysfs_blkdev_get_devchain(dev->sysfs, path, sizeof(path));
if (!chain)
return NULL;
- while (sysfs_blkdev_next_subsystem(cxt->sysfs, chain, &sub) == 0) {
+ while (sysfs_blkdev_next_subsystem(dev->sysfs, chain, &sub) == 0) {
size_t sz;
/* don't create "block:scsi:scsi", but "block:scsi" */
scols_cell_set_userdata(ce, data);
}
-static void set_sortdata_u64_from_string(struct libscols_line *ln, int col, const char *str)
+/* do not modify *data on any error */
+static void str2u64(const char *str, uint64_t *data)
{
- uint64_t x;
+ uintmax_t num;
+ char *end = NULL;
- if (!str || sscanf(str, "%"SCNu64, &x) != 1)
+ errno = 0;
+ if (str == NULL || *str == '\0')
return;
+ num = strtoumax(str, &end, 10);
- set_sortdata_u64(ln, col, x);
+ if (errno || str == end || (end && *end))
+ return;
+ *data = num;
}
static void unref_sortdata(struct libscols_table *tb)
scols_free_iter(itr);
}
-static void set_scols_data(struct blkdev_cxt *cxt, int col, int id, struct libscols_line *ln)
+static char *get_vfs_attribute(struct lsblk_device *dev, int id)
{
- int sort = 0, st_rc = 0;
- char *str = NULL;
+ 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);
+
+ 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 (!cxt->st.st_rdev && (id == COL_OWNER || id == COL_GROUP ||
- id == COL_MODE))
- st_rc = stat(cxt->filename, &cxt->st);
+ if (parent) {
+ pc = sysfs_blkdev_get_parent(dev->sysfs);
+ if (!pc)
+ goto done;
- if (lsblk->sort_id == id)
- sort = 1;
+ 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 */
+ ul_path_scanf(pc, "removable", "%d", &dev->removable);
+ }
+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;
+ char *str = NULL;
switch(id) {
case COL_NAME:
- str = cxt->dm_name ? mk_dm_name(cxt->dm_name) : mk_name(cxt->name);
+ str = dev->dm_name ? mk_dm_name(dev->dm_name) : mk_name(dev->name);
break;
case COL_KNAME:
- str = mk_name(cxt->name);
+ str = mk_name(dev->name);
break;
case COL_PKNAME:
- if (cxt->parent)
- str = mk_name(cxt->parent->name);
+ if (parent)
+ str = mk_name(parent->name);
+ break;
+ case COL_PATH:
+ if (dev->filename)
+ str = xstrdup(dev->filename);
break;
case COL_OWNER:
{
- struct passwd *pw = st_rc ? NULL : getpwuid(cxt->st.st_uid);
+ 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:
{
- struct group *gr = st_rc ? NULL : getgrgid(cxt->st.st_gid);
+ 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:
{
- char md[11];
+ struct stat *st = device_get_stat(dev);
+ char md[11] = { '\0' };
- if (!st_rc) {
- xstrmode(cxt->st.st_mode, md);
- str = xstrdup(md);
- }
+ if (st)
+ str = xstrdup(xstrmode(st->st_mode, md));
break;
}
case COL_MAJMIN:
if (is_parsable(lsblk))
- xasprintf(&str, "%u:%u", cxt->maj, cxt->min);
+ xasprintf(&str, "%u:%u", dev->maj, dev->min);
else
- xasprintf(&str, "%3u:%-3u", cxt->maj, cxt->min);
- if (sort)
- set_sortdata_u64(ln, col, makedev(cxt->maj, cxt->min));
+ xasprintf(&str, "%3u:%-3u", dev->maj, dev->min);
+ if (sortdata)
+ *sortdata = makedev(dev->maj, dev->min);
break;
case COL_FSTYPE:
- probe_device(cxt);
- if (cxt->fstype)
- str = xstrdup(cxt->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_TARGET:
- str = get_device_mountpoint(cxt);
+ str = xstrdup(lsblk_device_get_mountpoint(dev));
break;
case COL_LABEL:
- probe_device(cxt);
- if (cxt->label)
- str = xstrdup(cxt->label);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->label)
+ str = xstrdup(prop->label);
break;
case COL_UUID:
- probe_device(cxt);
- if (cxt->uuid)
- str = xstrdup(cxt->uuid);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->uuid)
+ str = xstrdup(prop->uuid);
break;
case COL_PTUUID:
- probe_device(cxt);
- if (cxt->ptuuid)
- str = xstrdup(cxt->ptuuid);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->ptuuid)
+ str = xstrdup(prop->ptuuid);
break;
case COL_PTTYPE:
- probe_device(cxt);
- if (cxt->pttype)
- str = xstrdup(cxt->pttype);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->pttype)
+ str = xstrdup(prop->pttype);
break;
case COL_PARTTYPE:
- probe_device(cxt);
- if (cxt->parttype)
- str = xstrdup(cxt->parttype);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->parttype)
+ str = xstrdup(prop->parttype);
break;
case COL_PARTLABEL:
- probe_device(cxt);
- if (cxt->partlabel)
- str = xstrdup(cxt->partlabel);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->partlabel)
+ str = xstrdup(prop->partlabel);
break;
case COL_PARTUUID:
- probe_device(cxt);
- if (cxt->partuuid)
- str = xstrdup(cxt->partuuid);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->partuuid)
+ str = xstrdup(prop->partuuid);
break;
case COL_PARTFLAGS:
- probe_device(cxt);
- if (cxt->partflags)
- str = xstrdup(cxt->partflags);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->partflags)
+ str = xstrdup(prop->partflags);
break;
case COL_WWN:
- get_udev_properties(cxt);
- if (cxt->wwn)
- str = xstrdup(cxt->wwn);
+ prop = lsblk_device_get_properties(dev);
+ if (prop && prop->wwn)
+ str = xstrdup(prop->wwn);
break;
case COL_RA:
- ul_path_read_string(cxt->sysfs, &str, "queue/read_ahead_kb");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ 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(cxt) ? "1" : "0");
+ str = xstrdup(is_readonly_device(dev) ? "1" : "0");
break;
case COL_RM:
- ul_path_read_string(cxt->sysfs, &str, "removable");
- if (!str && sysfs_blkdev_get_parent(cxt->sysfs))
- ul_path_read_string(sysfs_blkdev_get_parent(cxt->sysfs),
- &str,
- "removable");
+ str = xstrdup(is_removable_device(dev, parent) ? "1" : "0");
break;
case COL_HOTPLUG:
- str = sysfs_blkdev_is_hotpluggable(cxt->sysfs) ? xstrdup("1") : xstrdup("0");
+ str = sysfs_blkdev_is_hotpluggable(dev->sysfs) ? xstrdup("1") : xstrdup("0");
break;
case COL_ROTA:
- ul_path_read_string(cxt->sysfs, &str, "queue/rotational");
+ ul_path_read_string(dev->sysfs, &str, "queue/rotational");
break;
case COL_RAND:
- ul_path_read_string(cxt->sysfs, &str, "queue/add_random");
+ ul_path_read_string(dev->sysfs, &str, "queue/add_random");
break;
case COL_MODEL:
- if (!cxt->partition && cxt->nslaves == 0)
- ul_path_read_string(cxt->sysfs, &str, "device/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 (!cxt->partition && cxt->nslaves == 0) {
- get_udev_properties(cxt);
- if (cxt->serial)
- str = xstrdup(cxt->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(cxt->sysfs, &str, "device/serial");
+ ul_path_read_string(dev->sysfs, &str, "device/serial");
}
break;
case COL_REV:
- if (!cxt->partition && cxt->nslaves == 0)
- ul_path_read_string(cxt->sysfs, &str, "device/rev");
+ if (!device_is_partition(dev) && dev->nslaves == 0)
+ ul_path_read_string(dev->sysfs, &str, "device/rev");
break;
case COL_VENDOR:
- if (!cxt->partition && cxt->nslaves == 0)
- ul_path_read_string(cxt->sysfs, &str, "device/vendor");
+ if (!device_is_partition(dev) && dev->nslaves == 0)
+ ul_path_read_string(dev->sysfs, &str, "device/vendor");
break;
case COL_SIZE:
- if (!cxt->size)
+ if (!dev->size)
break;
if (lsblk->bytes)
- xasprintf(&str, "%ju", cxt->size);
+ xasprintf(&str, "%ju", dev->size);
else
- str = size_to_human_string(SIZE_SUFFIX_1LETTER, cxt->size);
- if (sort)
- set_sortdata_u64(ln, col, cxt->size);
+ str = size_to_human_string(SIZE_SUFFIX_1LETTER, dev->size);
+ if (sortdata)
+ *sortdata = dev->size;
break;
case COL_STATE:
- if (!cxt->partition && !cxt->dm_name)
- ul_path_read_string(cxt->sysfs, &str, "device/state");
- else if (cxt->dm_name) {
+ 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(cxt->sysfs, &x, "dm/suspended") == 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(cxt->sysfs, &str, "alignment_offset");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "alignment_offset");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_MINIO:
- ul_path_read_string(cxt->sysfs, &str, "queue/minimum_io_size");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/minimum_io_size");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_OPTIO:
- ul_path_read_string(cxt->sysfs, &str, "queue/optimal_io_size");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/optimal_io_size");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_PHYSEC:
- ul_path_read_string(cxt->sysfs, &str, "queue/physical_block_size");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/physical_block_size");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_LOGSEC:
- ul_path_read_string(cxt->sysfs, &str, "queue/logical_block_size");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/logical_block_size");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_SCHED:
- str = get_scheduler(cxt);
+ str = get_scheduler(dev);
break;
case COL_RQ_SIZE:
- ul_path_read_string(cxt->sysfs, &str, "queue/nr_requests");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/nr_requests");
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_TYPE:
- str = get_type(cxt);
+ str = get_type(dev);
break;
case COL_HCTL:
{
int h, c, t, l;
- if (sysfs_blkdev_scsi_get_hctl(cxt->sysfs, &h, &c, &t, &l) == 0)
+ 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(cxt);
+ str = get_transport(dev);
break;
case COL_SUBSYS:
- str = get_subsystems(cxt);
+ str = get_subsystems(dev);
break;
case COL_DALIGN:
- if (cxt->discard)
- ul_path_read_string(cxt->sysfs, &str, "discard_alignment");
+ if (device_get_discard_granularity(dev) > 0)
+ ul_path_read_string(dev->sysfs, &str, "discard_alignment");
if (!str)
str = xstrdup("0");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ if (sortdata)
+ str2u64(str, sortdata);
break;
case COL_DGRAN:
if (lsblk->bytes) {
- ul_path_read_string(cxt->sysfs, &str, "queue/discard_granularity");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ ul_path_read_string(dev->sysfs, &str, "queue/discard_granularity");
+ if (sortdata)
+ str2u64(str, sortdata);
} else {
- uint64_t x;
- if (ul_path_read_u64(cxt->sysfs, &x, "queue/discard_granularity") == 0) {
- str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
- if (sort)
- set_sortdata_u64(ln, col, x);
- }
+ 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(cxt->sysfs, &str, "queue/discard_max_bytes");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ 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(cxt->sysfs, &x, "queue/discard_max_bytes") == 0) {
+ if (ul_path_read_u64(dev->sysfs, &x, "queue/discard_max_bytes") == 0) {
str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
- if (sort)
- set_sortdata_u64(ln, col, x);
+ if (sortdata)
+ *sortdata = x;
}
}
break;
case COL_DZERO:
- if (cxt->discard)
- ul_path_read_string(cxt->sysfs, &str, "queue/discard_zeroes_data");
+ 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(cxt->sysfs, &str, "queue/write_same_max_bytes");
- if (sort)
- set_sortdata_u64_from_string(ln, col, str);
+ 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(cxt->sysfs, &x, "queue/write_same_max_bytes") == 0) {
+ if (ul_path_read_u64(dev->sysfs, &x, "queue/write_same_max_bytes") == 0) {
str = size_to_human_string(SIZE_SUFFIX_1LETTER, x);
- if (sort)
- set_sortdata_u64(ln, col, x);
+ if (sortdata)
+ *sortdata = x;
}
}
if (!str)
str = xstrdup("0");
break;
case COL_ZONED:
- ul_path_read_string(cxt->sysfs, &str, "queue/zoned");
+ ul_path_read_string(dev->sysfs, &str, "queue/zoned");
break;
};
- if (str && scols_line_refer_data(ln, col, str))
- err(EXIT_FAILURE, _("failed to add output data"));
+ return str;
}
-static void fill_table_line(struct blkdev_cxt *cxt, struct libscols_line *scols_parent)
+/*
+ * 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;
- cxt->scols_line = scols_table_new_line(lsblk->table, scols_parent);
- if (!cxt->scols_line)
+ ON_DBG(DEV, if (ul_path_isopen_dirfd(dev->sysfs)) ul_debugobj(dev, "%s ---> is open!", dev->name));
+
+ /* Do not print device more than one in --list mode */
+ if (!(lsblk->flags & LSBLK_TREE) && 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"));
- for (i = 0; i < ncolumns; i++)
- set_scols_data(cxt, i, get_column_id(i), cxt->scols_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 */
+ lsblk_reset_iter(&itr, LSBLK_ITER_FORWARD);
+ while (lsblk_device_next_parent(dev, &itr, &p) == 0) {
+ if (!p->scols_line)
+ continue;
+ scols_table_group_lines(tab, gr, p->scols_line, 0);
+ }
+
+ /* Link the group -- this makes group->child connection */
+ 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);
+ }
+ 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)
+ device_to_scols(child, dev, tab, ln);
+
+ /* 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 set_cxt(struct blkdev_cxt *cxt,
- struct blkdev_cxt *parent,
- struct blkdev_cxt *wholedisk,
+/*
+ * 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(CXT, ul_debugobj(cxt, "setting context for %s [parent=%p, wholedisk=%p]",
- name, parent, wholedisk));
+ DBG(DEV, ul_debugobj(dev, "initialize %s [wholedisk=%p %s]",
+ name, wholedisk, wholedisk ? wholedisk->name : ""));
- cxt->parent = parent;
- cxt->name = xstrdup(name);
- cxt->partition = wholedisk != NULL;
+ dev->name = xstrdup(name);
- cxt->filename = get_device_path(cxt);
- if (!cxt->filename) {
- DBG(CXT, ul_debugobj(cxt, "%s: failed to get device path", cxt->name));
- return -1;
+ if (wholedisk) {
+ dev->wholedisk = wholedisk;
+ lsblk_ref_device(wholedisk);
}
- DBG(CXT, ul_debugobj(cxt, "%s: filename=%s", cxt->name, cxt->filename));
- devno = __sysfs_devname_to_devno(lsblk->sysroot, cxt->name, wholedisk ? wholedisk->name : NULL);
+ 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(CXT, ul_debugobj(cxt, "%s: unknown device name", cxt->name));
+ DBG(DEV, ul_debugobj(dev, "%s: unknown device name", dev->name));
return -1;
}
- if (lsblk->inverse) {
- cxt->sysfs = ul_new_sysfs_path(devno, wholedisk ? wholedisk->sysfs : NULL, lsblk->sysroot);
- if (!cxt->sysfs) {
- DBG(CXT, ul_debugobj(cxt, "%s: failed to initialize sysfs handler", cxt->name));
- return -1;
- }
- if (parent)
- sysfs_blkdev_set_parent(parent->sysfs, cxt->sysfs);
- } else {
- cxt->sysfs = ul_new_sysfs_path(devno, parent ? parent->sysfs : NULL, lsblk->sysroot);
- if (!cxt->sysfs) {
- DBG(CXT, ul_debugobj(cxt, "%s: failed to initialize sysfs handler", cxt->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;
}
- cxt->maj = major(devno);
- cxt->min = minor(devno);
- cxt->size = 0;
+ dev->maj = major(devno);
+ dev->min = minor(devno);
+ dev->size = 0;
- if (ul_path_read_u64(cxt->sysfs, &cxt->size, "size") == 0) /* in sectors */
- cxt->size <<= 9; /* in bytes */
-
- if (ul_path_read_s32(cxt->sysfs, &cxt->discard,
- "queue/discard_granularity") != 0)
- cxt->discard = 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 && cxt->size == 0) {
- DBG(CXT, ul_debugobj(cxt, "zero size device -- ignore"));
+ if (!lsblk->all_devices && dev->size == 0) {
+ DBG(DEV, ul_debugobj(dev, "zero size device -- ignore"));
return -1;
}
- if (is_dm(cxt->name)) {
- ul_path_read_string(cxt->sysfs, &cxt->dm_name, "dm/name");
- if (!cxt->dm_name) {
- DBG(CXT, ul_debugobj(cxt, "%s: failed to get dm name", cxt->name));
+ 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;
}
}
- cxt->npartitions = sysfs_blkdev_count_partitions(cxt->sysfs, cxt->name);
- cxt->nholders = ul_path_count_dirents(cxt->sysfs, "holders");
- cxt->nslaves = ul_path_count_dirents(cxt->sysfs, "slaves");
+ 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(CXT, ul_debugobj(cxt, "%s: npartitions=%d, nholders=%d, nslaves=%d",
- cxt->name, cxt->npartitions, cxt->nholders, cxt->nslaves));
+ 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(cxt->sysfs, NULL, NULL, NULL, NULL)) {
- DBG(CXT, ul_debugobj(cxt, "non-scsi device -- ignore"));
+ 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(CXT, ul_debugobj(cxt, "%s: context successfully initialized", cxt->name));
+ DBG(DEV, ul_debugobj(dev, "%s: context successfully initialized", dev->name));
return 0;
}
-static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent,
- int do_partitions, const char *part_name);
+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);
/*
- * List device partitions if any.
+ * Read devices from whole-disk device into tree
*/
-static int list_partitions(struct blkdev_cxt *wholedisk_cxt, struct blkdev_cxt *parent_cxt,
- const char *part_name)
+static int process_partitions(struct lsblk_devtree *tr, struct lsblk_device *disk)
{
DIR *dir;
struct dirent *d;
- struct blkdev_cxt part_cxt = { NULL };
- int r = -1;
- assert(wholedisk_cxt);
+ assert(disk);
/*
* Do not process further if there are no partitions for
* this device or the device itself is a partition.
*/
- if (!wholedisk_cxt->npartitions || wholedisk_cxt->partition)
- return -1;
+ if (!disk->npartitions || device_is_partition(disk))
+ return -EINVAL;
- DBG(CXT, ul_debugobj(wholedisk_cxt, "probe whole-disk for partitions"));
+ DBG(DEV, ul_debugobj(disk, "%s: probe whole-disk for partitions", disk->name));
- dir = ul_path_opendir(wholedisk_cxt->sysfs, NULL);
+ dir = ul_path_opendir(disk->sysfs, NULL);
if (!dir)
err(EXIT_FAILURE, _("failed to open device directory in sysfs"));
while ((d = xreaddir(dir))) {
- /* Process particular partition only? */
- if (part_name && strcmp(part_name, d->d_name))
- continue;
+ struct lsblk_device *part;
- if (!(sysfs_blkdev_is_partition_dirent(dir, d, wholedisk_cxt->name)))
+ if (!(sysfs_blkdev_is_partition_dirent(dir, d, disk->name)))
continue;
- DBG(CXT, ul_debugobj(wholedisk_cxt, " checking %s", d->d_name));
+ DBG(DEV, ul_debugobj(disk, " checking %s", d->d_name));
- if (lsblk->inverse) {
- /*
- * <parent_cxt>
- * `-<part_cxt>
- * `-<wholedisk_cxt>
- * `-...
- */
- if (set_cxt(&part_cxt, parent_cxt, wholedisk_cxt, d->d_name))
- goto next;
+ part = devtree_get_device_or_new(tr, disk, d->d_name);
+ if (!part)
+ continue;
- if (!parent_cxt && part_cxt.nholders)
- goto next;
+ if (lsblk_device_new_dependence(disk, part) == 0)
+ process_dependencies(tr, part, 0);
- wholedisk_cxt->parent = &part_cxt;
- fill_table_line(&part_cxt, parent_cxt ? parent_cxt->scols_line : NULL);
- if (!lsblk->nodeps)
- process_blkdev(wholedisk_cxt, &part_cxt, 0, NULL);
- } else {
- /*
- * <parent_cxt>
- * `-<wholedisk_cxt>
- * `-<part_cxt>
- * `-...
- */
- int ps = set_cxt(&part_cxt, wholedisk_cxt, wholedisk_cxt, d->d_name);
-
- /* Print whole disk only once */
- if (r)
- fill_table_line(wholedisk_cxt, parent_cxt ? parent_cxt->scols_line : NULL);
- if (ps == 0 && !lsblk->nodeps)
- process_blkdev(&part_cxt, wholedisk_cxt, 0, NULL);
- }
- next:
- reset_blkdev_cxt(&part_cxt);
- r = 0;
+ ul_path_close_dirfd(part->sysfs);
}
- DBG(CXT, ul_debugobj(wholedisk_cxt, "probe whole-disk for partitions -- done"));
+ /* 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 r;
+ return 0;
}
-static int get_wholedisk_from_partition_dirent(DIR *dir,
- struct dirent *d, struct blkdev_cxt *cxt)
+static char *get_wholedisk_from_partition_dirent(DIR *dir, struct dirent *d, char *buf, size_t bufsz)
{
- char path[PATH_MAX];
char *p;
int len;
- if ((len = readlinkat(dirfd(dir), d->d_name, path, sizeof(path) - 1)) < 0)
+ if ((len = readlinkat(dirfd(dir), d->d_name, buf, bufsz - 1)) < 0)
return 0;
- path[len] = '\0';
+ buf[len] = '\0';
/* The path ends with ".../<device>/<partition>" */
- p = strrchr(path, '/');
+ p = strrchr(buf, '/');
if (!p)
- return 0;
+ return NULL;
*p = '\0';
- p = strrchr(path, '/');
+ p = strrchr(buf, '/');
if (!p)
- return 0;
+ return NULL;
p++;
- return set_cxt(cxt, NULL, NULL, p);
+ return p;
}
/*
- * List device dependencies: partitions, holders (inverse = 0) or slaves (inverse = 1).
+ * Reads slaves/holders and partitions for specified device into device tree
*/
-static int list_deps(struct blkdev_cxt *cxt)
+static int process_dependencies(
+ struct lsblk_devtree *tr,
+ struct lsblk_device *dev,
+ int do_partitions)
{
DIR *dir;
struct dirent *d;
- struct blkdev_cxt dep = { NULL };
const char *depname;
- assert(cxt);
+ assert(dev);
if (lsblk->nodeps)
return 0;
- DBG(CXT, ul_debugobj(cxt, "%s: list dependencies", cxt->name));
+ /* 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 ? cxt->nslaves : cxt->nholders))
+ 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(cxt->sysfs, depname);
- if (!dir)
+ 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(CXT, ul_debugobj(cxt, "%s: checking for '%s' dependence", cxt->name, depname));
+ 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)) {
- if (!get_wholedisk_from_partition_dirent(dir, d, &dep)) {
- DBG(CXT, ul_debugobj(cxt, "%s: %s: dependence is partition",
- cxt->name, d->d_name));
- process_blkdev(&dep, cxt, 1, d->d_name);
- }
- }
- /* The dependency is a whole device. */
- else if (!set_cxt(&dep, cxt, NULL, d->d_name)) {
- DBG(CXT, ul_debugobj(cxt, "%s: %s: dependence is whole-disk",
- cxt->name, d->d_name));
- /* For inverse tree we don't want to show partitions
- * if the dependence is on whole-disk */
- process_blkdev(&dep, cxt, lsblk->inverse ? 0 : 1, NULL);
- }
- reset_blkdev_cxt(&dep);
- }
- closedir(dir);
- DBG(CXT, ul_debugobj(cxt, "%s: checking for '%s' -- done", cxt->name, depname));
- return 0;
-}
+ char buf[PATH_MAX];
+ char *diskname;
-static int process_blkdev(struct blkdev_cxt *cxt, struct blkdev_cxt *parent,
- int do_partitions, const char *part_name)
-{
- if (do_partitions && cxt->npartitions)
- list_partitions(cxt, parent, part_name); /* partitions + whole-disk */
- else
- fill_table_line(cxt, parent ? parent->scols_line : NULL); /* whole-disk only */
-
- return list_deps(cxt);
-}
+ DBG(DEV, ul_debugobj(dev, " %s: dependence is partition", d->d_name));
-/* Iterate devices in sysfs */
-static int iterate_block_devices(void)
-{
- DIR *dir;
- struct dirent *d;
- struct blkdev_cxt cxt = { NULL };
- struct path_cxt *pc = ul_new_path(_PATH_SYS_BLOCK);
-
- if (!pc)
- err(EXIT_FAILURE, _("failed to allocate /sys handler"));
-
- ul_path_set_prefix(pc, lsblk->sysroot);
-
- /* TODO: reuse @pc in set_cxt(), etc. */
- dir = ul_path_opendir(pc, NULL);
- if (!dir)
- goto done;
-
- DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK));
-
- while ((d = xreaddir(dir))) {
+ 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;
+ }
- DBG(DEV, ul_debug(" %s dentry", d->d_name));
+ dep = devtree_get_device_or_new(tr, disk, d->d_name);
+ if (!dep)
+ goto next;
- if (set_cxt(&cxt, NULL, NULL, d->d_name))
- goto next;
+ if (lsblk_device_new_dependence(dev, dep) == 0)
+ process_dependencies(tr, dep, 1);
- if (is_maj_excluded(cxt.maj) || !is_maj_included(cxt.maj))
- goto next;
+ 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));
- /* Skip devices in the middle of dependency tree. */
- if ((lsblk->inverse ? cxt.nholders : cxt.nslaves) > 0)
- goto next;
+ dep = devtree_get_device_or_new(tr, NULL, d->d_name);
+ if (!dep)
+ goto next;
- process_blkdev(&cxt, NULL, 1, NULL);
- next:
- reset_blkdev_cxt(&cxt);
+ 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:
- ul_unref_path(pc);
- DBG(DEV, ul_debug("iterate on " _PATH_SYS_BLOCK " -- done"));
+
+ DBG(DEV, ul_debugobj(dev, "%s: checking for '%s' -- done", dev->name, depname));
return 0;
}
-static int process_one_device(char *devname)
+/*
+ * 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 blkdev_cxt parent = { NULL }, cxt = { NULL };
- struct stat st;
+ struct lsblk_device *dev = NULL;
+ struct lsblk_device *disk = NULL;
char buf[PATH_MAX + 1], *name = NULL, *diskname = NULL;
- dev_t disk = 0;
int real_part = 0, rc = -EINVAL;
- if (stat(devname, &st) || !S_ISBLK(st.st_mode)) {
- warnx(_("%s: not a block device"), devname);
- goto leave;
- }
+ if (devno == 0) {
+ 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
+ DBG(DEV, ul_debug("%d:%d: reading alone device", major(devno), minor(devno)));
/* 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 set_cxt()
+ * and reuse path_cxt for initialize_device()
*/
- name = sysfs_devno_to_devname(st.st_rdev, buf, sizeof(buf));
+ name = sysfs_devno_to_devname(devno, buf, sizeof(buf));
if (!name) {
- warn(_("%s: failed to get sysfs name"), devname);
+ 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 {
- if (blkid_devno_to_wholedisk(st.st_rdev, buf, sizeof(buf), &disk)) {
- warn(_("%s: failed to get whole-disk device number"), devname);
+ 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 = st.st_rdev != disk;
+ real_part = devno != diskno;
}
if (!real_part) {
/*
* Device is not a partition.
*/
- if (set_cxt(&cxt, NULL, NULL, name))
+ DBG(DEV, ul_debug(" non-partition"));
+
+ dev = devtree_get_device_or_new(tr, NULL, name);
+ if (!dev)
goto leave;
- process_blkdev(&cxt, NULL, !lsblk->inverse, NULL);
+
+ lsblk_devtree_add_root(tr, dev);
+ process_dependencies(tr, dev, !lsblk->inverse);
} else {
/*
- * Partition, read sysfs name of the device.
+ * Partition, read sysfs name of the disk device
*/
- if (set_cxt(&parent, NULL, NULL, diskname))
+ DBG(DEV, ul_debug(" partition"));
+
+ disk = devtree_get_device_or_new(tr, NULL, diskname);
+ if (!disk)
goto leave;
- if (set_cxt(&cxt, &parent, &parent, name))
+
+ dev = devtree_get_device_or_new(tr, disk, name);
+ if (!dev)
goto leave;
- if (lsblk->inverse)
- process_blkdev(&parent, &cxt, 1, cxt.name);
+ 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
- process_blkdev(&cxt, &parent, 1, NULL);
+ 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);
- reset_blkdev_cxt(&cxt);
+ return rc;
+}
- if (real_part)
- reset_blkdev_cxt(&parent);
+static int process_one_device(struct lsblk_devtree *tr, char *devname)
+{
+ return __process_one_device(tr, devname, 0);
+}
- return rc;
+/*
+ * 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);
+ 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;
}
}
+/*
+ * 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;
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;
fputs(_("List information about block devices.\n"), out);
fputs(USAGE_OPTIONS, 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(_(" -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[=<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(_(" -D, --discard print discard capabilities\n"), out);
- fputs(_(" -z, --zoned print zone model\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(_(" -I, --include <list> show only devices with specified major numbers\n"), out);
- fputs(_(" -J, --json use JSON output format\n"), out);
fputs(_(" -l, --list use list format output\n"), out);
- fputs(_(" -T, --tree use tree format output\n"), out);
+ fputs(_(" -M, --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 <list> output columns\n"), out);
- fputs(_(" -O, --output-all output all columns\n"), out);
fputs(_(" -p, --paths print complete device path\n"), out);
- fputs(_(" -P, --pairs use key=\"value\" output format\n"), out);
fputs(_(" -r, --raw use raw output format\n"), out);
fputs(_(" -s, --inverse inverse dependencies\n"), out);
- fputs(_(" -S, --scsi output info about SCSI devices\n"), out);
fputs(_(" -t, --topology output info about topology\n"), out);
+ fputs(_(" -z, --zoned print zone model\n"), out);
fputs(_(" -x, --sort <column> sort output by <column>\n"), out);
+ fputs(_(" --sysroot <dir> use specified directory as system root\n"), out);
fputs(USAGE_SEPARATOR, out);
printf(USAGE_HELP_OPTIONS(22));
int main(int argc, char *argv[])
{
- struct lsblk _ls = { .sort_id = -1, .flags = LSBLK_TREE };
+ 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;
+ int force_tree = 0, has_tree_col = 0;
enum {
OPT_SYSROOT = CHAR_MAX + 1
{ "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' },
{ "scsi", no_argument, NULL, 'S' },
{ "sort", required_argument, NULL, 'x' },
{ "sysroot", required_argument, NULL, OPT_SYSROOT },
- { "tree", no_argument, NULL, 'T' },
+ { "tree", optional_argument, NULL, 'T' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 },
};
lsblk_init_debug();
while((c = getopt_long(argc, argv,
- "abdDze:fhJlnmo:OpPiI:rstVSTx:", longopts, NULL)) != -1) {
+ "abdDzE:e:fhJlnMmo:OpPiI:rstVST:x:", longopts, NULL)) != -1) {
err_exclusive_options(c, longopts, excl, excl_st);
case 'l':
lsblk->flags &= ~LSBLK_TREE; /* disable the default */
break;
+ case 'M':
+ lsblk->merge = 1;
+ break;
case 'n':
lsblk->flags |= LSBLK_NOHEADINGS;
break;
add_uniq_column(COL_FSTYPE);
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':
break;
case 'T':
force_tree = 1;
+ if (optarg)
+ lsblk->tree_id = column_name_to_id(optarg, strlen(optarg));
break;
-
case OPT_SYSROOT:
lsblk->sysroot = optarg;
break;
case 'V':
printf(UTIL_LINUX_VERSION);
return EXIT_SUCCESS;
+ 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));
lsblk->sort_hidden = 1;
}
- mnt_init_debug(0);
+ 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();
struct libscols_column *cl;
int id = get_column_id(i), fl = ci->flags;
- if (!(lsblk->flags & LSBLK_TREE) && id == COL_NAME)
- fl &= ~SCOLS_FL_TREE;
+ if ((lsblk->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;
cl = scols_table_new_column(lsblk->table, ci->name, ci->whint, fl);
if (!cl) {
}
}
- if (optind == argc)
- status = iterate_block_devices() == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
- else {
+ 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(argv[optind++]) != 0)
+ if (process_one_device(tr, argv[optind++]) != 0)
cnt_err++;
cnt++;
}
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_unref_table(lsblk->table);
- mnt_unref_table(mtab);
- mnt_unref_table(swaps);
- mnt_unref_cache(mntcache);
-#ifdef HAVE_LIBUDEV
- udev_unref(udev);
-#endif
+ lsblk_mnt_deinit();
+ lsblk_properties_deinit();
+ lsblk_unref_devtree(tr);
+
return status;
}
projects / thirdparty / util-linux.git / blobdiff