mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 00:47:10 +09:00
1649 lines
60 KiB
C
1649 lines
60 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
|
|
#include <getopt.h>
|
|
|
|
#include "sd-bus.h"
|
|
#include "sd-device.h"
|
|
|
|
#include "argv-util.h"
|
|
#include "build.h"
|
|
#include "bus-error.h"
|
|
#include "bus-locator.h"
|
|
#include "bus-unit-util.h"
|
|
#include "bus-util.h"
|
|
#include "bus-wait-for-jobs.h"
|
|
#include "chase.h"
|
|
#include "device-util.h"
|
|
#include "errno-util.h"
|
|
#include "escape.h"
|
|
#include "fd-util.h"
|
|
#include "format-table.h"
|
|
#include "format-util.h"
|
|
#include "fstab-util.h"
|
|
#include "libmount-util.h"
|
|
#include "main-func.h"
|
|
#include "mountpoint-util.h"
|
|
#include "pager.h"
|
|
#include "parse-argument.h"
|
|
#include "parse-util.h"
|
|
#include "path-util.h"
|
|
#include "polkit-agent.h"
|
|
#include "pretty-print.h"
|
|
#include "process-util.h"
|
|
#include "runtime-scope.h"
|
|
#include "stat-util.h"
|
|
#include "string-util.h"
|
|
#include "strv.h"
|
|
#include "time-util.h"
|
|
#include "udev-util.h"
|
|
#include "unit-def.h"
|
|
#include "unit-name.h"
|
|
#include "user-util.h"
|
|
|
|
enum {
|
|
ACTION_DEFAULT,
|
|
ACTION_MOUNT,
|
|
ACTION_AUTOMOUNT,
|
|
ACTION_UMOUNT,
|
|
ACTION_LIST,
|
|
} arg_action = ACTION_DEFAULT;
|
|
|
|
static bool arg_no_block = false;
|
|
static PagerFlags arg_pager_flags = 0;
|
|
static bool arg_legend = true;
|
|
static bool arg_full = false;
|
|
static bool arg_ask_password = true;
|
|
static bool arg_quiet = false;
|
|
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
|
|
static RuntimeScope arg_runtime_scope = RUNTIME_SCOPE_SYSTEM;
|
|
static const char *arg_host = NULL;
|
|
static bool arg_discover = false;
|
|
static char *arg_mount_what = NULL;
|
|
static char *arg_mount_where = NULL;
|
|
static char *arg_mount_type = NULL;
|
|
static char *arg_mount_options = NULL;
|
|
static char *arg_description = NULL;
|
|
static char **arg_property = NULL;
|
|
static usec_t arg_timeout_idle = USEC_INFINITY;
|
|
static bool arg_timeout_idle_set = false;
|
|
static char **arg_automount_property = NULL;
|
|
static int arg_bind_device = -1;
|
|
static uid_t arg_uid = UID_INVALID;
|
|
static gid_t arg_gid = GID_INVALID;
|
|
static bool arg_fsck = true;
|
|
static bool arg_aggressive_gc = false;
|
|
static bool arg_tmpfs = false;
|
|
static sd_json_format_flags_t arg_json_format_flags = SD_JSON_FORMAT_OFF;
|
|
static bool arg_canonicalize = true;
|
|
|
|
STATIC_DESTRUCTOR_REGISTER(arg_mount_what, freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_mount_where, freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_mount_type, freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_mount_options, freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_description, freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep);
|
|
STATIC_DESTRUCTOR_REGISTER(arg_automount_property, strv_freep);
|
|
|
|
static int parse_where(const char *input, char **ret_where) {
|
|
int r;
|
|
|
|
assert(input);
|
|
assert(ret_where);
|
|
|
|
if (arg_transport == BUS_TRANSPORT_LOCAL && arg_canonicalize) {
|
|
r = chase(input, /* root= */ NULL, CHASE_NONEXISTENT|CHASE_TRIGGER_AUTOFS, ret_where, /* ret_fd= */ NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to make path %s absolute: %m", input);
|
|
} else {
|
|
if (!path_is_absolute(input))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path must be absolute when operating remotely or when canonicalization is turned off: %s",
|
|
input);
|
|
|
|
r = path_simplify_alloc(input, ret_where);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to simplify path %s: %m", input);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int help(void) {
|
|
_cleanup_free_ char *link = NULL;
|
|
int r;
|
|
|
|
r = terminal_urlify_man("systemd-mount", "1", &link);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
printf("systemd-mount [OPTIONS...] WHAT [WHERE]\n"
|
|
"systemd-mount [OPTIONS...] --tmpfs [NAME] WHERE\n"
|
|
"systemd-mount [OPTIONS...] --list\n"
|
|
"%1$s [OPTIONS...] %7$sWHAT|WHERE...\n"
|
|
"\n%5$sEstablish a mount or auto-mount point transiently.%6$s\n"
|
|
"\n%3$sOptions:%4$s\n"
|
|
" -h --help Show this help\n"
|
|
" --version Show package version\n"
|
|
" --no-block Do not wait until operation finished\n"
|
|
" --no-pager Do not pipe output into a pager\n"
|
|
" --no-legend Do not show the headers\n"
|
|
" -l --full Do not ellipsize output\n"
|
|
" --no-ask-password Do not prompt for password\n"
|
|
" -q --quiet Suppress information messages during runtime\n"
|
|
" --json=pretty|short|off Generate JSON output\n"
|
|
" --user Run as user unit\n"
|
|
" -H --host=[USER@]HOST Operate on remote host\n"
|
|
" -M --machine=CONTAINER Operate on local container\n"
|
|
" --discover Discover mount device metadata\n"
|
|
" -t --type=TYPE File system type\n"
|
|
" -o --options=OPTIONS Mount options\n"
|
|
" --owner=USER Add uid= and gid= options for USER\n"
|
|
" --fsck=no Don't run file system check before mount\n"
|
|
" --description=TEXT Description for unit\n"
|
|
" -p --property=NAME=VALUE Set mount unit property\n"
|
|
" -A --automount=BOOL Create an auto-mount point\n"
|
|
" --timeout-idle-sec=SEC Specify automount idle timeout\n"
|
|
" --automount-property=NAME=VALUE\n"
|
|
" Set automount unit property\n"
|
|
" --bind-device Bind automount unit to device\n"
|
|
" --list List mountable block devices\n"
|
|
" -u --umount Unmount mount points\n"
|
|
" -G --collect Unload unit after it stopped, even when failed\n"
|
|
" -T --tmpfs Create a new tmpfs on the mount point\n"
|
|
" --canonicalize=BOOL Controls whether to canonicalize path before\n"
|
|
" operation\n"
|
|
"\nSee the %2$s for details.\n",
|
|
program_invocation_short_name,
|
|
link,
|
|
ansi_underline(),
|
|
ansi_normal(),
|
|
ansi_highlight(),
|
|
ansi_normal(),
|
|
streq(program_invocation_short_name, "systemd-umount") ? "" : "--umount ");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_argv(int argc, char *argv[]) {
|
|
|
|
enum {
|
|
ARG_VERSION = 0x100,
|
|
ARG_NO_BLOCK,
|
|
ARG_NO_PAGER,
|
|
ARG_NO_LEGEND,
|
|
ARG_NO_ASK_PASSWORD,
|
|
ARG_USER,
|
|
ARG_SYSTEM,
|
|
ARG_DISCOVER,
|
|
ARG_MOUNT_TYPE,
|
|
ARG_MOUNT_OPTIONS,
|
|
ARG_OWNER,
|
|
ARG_FSCK,
|
|
ARG_DESCRIPTION,
|
|
ARG_TIMEOUT_IDLE,
|
|
ARG_AUTOMOUNT,
|
|
ARG_AUTOMOUNT_PROPERTY,
|
|
ARG_BIND_DEVICE,
|
|
ARG_LIST,
|
|
ARG_JSON,
|
|
ARG_CANONICALIZE,
|
|
};
|
|
|
|
static const struct option options[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version", no_argument, NULL, ARG_VERSION },
|
|
{ "no-block", no_argument, NULL, ARG_NO_BLOCK },
|
|
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
|
|
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
|
|
{ "full", no_argument, NULL, 'l' },
|
|
{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
|
|
{ "quiet", no_argument, NULL, 'q' },
|
|
{ "user", no_argument, NULL, ARG_USER },
|
|
{ "system", no_argument, NULL, ARG_SYSTEM },
|
|
{ "host", required_argument, NULL, 'H' },
|
|
{ "machine", required_argument, NULL, 'M' },
|
|
{ "discover", no_argument, NULL, ARG_DISCOVER },
|
|
{ "type", required_argument, NULL, 't' },
|
|
{ "options", required_argument, NULL, 'o' },
|
|
{ "owner", required_argument, NULL, ARG_OWNER },
|
|
{ "fsck", required_argument, NULL, ARG_FSCK },
|
|
{ "description", required_argument, NULL, ARG_DESCRIPTION },
|
|
{ "property", required_argument, NULL, 'p' },
|
|
{ "automount", required_argument, NULL, ARG_AUTOMOUNT },
|
|
{ "timeout-idle-sec", required_argument, NULL, ARG_TIMEOUT_IDLE },
|
|
{ "automount-property", required_argument, NULL, ARG_AUTOMOUNT_PROPERTY },
|
|
{ "bind-device", no_argument, NULL, ARG_BIND_DEVICE },
|
|
{ "list", no_argument, NULL, ARG_LIST },
|
|
{ "umount", no_argument, NULL, 'u' },
|
|
{ "unmount", no_argument, NULL, 'u' }, /* Compat spelling */
|
|
{ "collect", no_argument, NULL, 'G' },
|
|
{ "tmpfs", no_argument, NULL, 'T' },
|
|
{ "json", required_argument, NULL, ARG_JSON },
|
|
{ "canonicalize", required_argument, NULL, ARG_CANONICALIZE },
|
|
{},
|
|
};
|
|
|
|
int r, c;
|
|
|
|
assert(argc >= 0);
|
|
assert(argv);
|
|
|
|
if (invoked_as(argv, "systemd-umount"))
|
|
arg_action = ACTION_UMOUNT;
|
|
|
|
while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:AuGlT", options, NULL)) >= 0)
|
|
|
|
switch (c) {
|
|
|
|
case 'h':
|
|
return help();
|
|
|
|
case ARG_VERSION:
|
|
return version();
|
|
|
|
case ARG_NO_BLOCK:
|
|
arg_no_block = true;
|
|
break;
|
|
|
|
case ARG_NO_PAGER:
|
|
arg_pager_flags |= PAGER_DISABLE;
|
|
break;
|
|
|
|
case ARG_NO_LEGEND:
|
|
arg_legend = false;
|
|
break;
|
|
|
|
case 'l':
|
|
arg_full = true;
|
|
break;
|
|
|
|
case ARG_NO_ASK_PASSWORD:
|
|
arg_ask_password = false;
|
|
break;
|
|
|
|
case 'q':
|
|
arg_quiet = true;
|
|
break;
|
|
|
|
case ARG_USER:
|
|
arg_runtime_scope = RUNTIME_SCOPE_USER;
|
|
break;
|
|
|
|
case ARG_SYSTEM:
|
|
arg_runtime_scope = RUNTIME_SCOPE_SYSTEM;
|
|
break;
|
|
|
|
case 'H':
|
|
arg_transport = BUS_TRANSPORT_REMOTE;
|
|
arg_host = optarg;
|
|
break;
|
|
|
|
case 'M':
|
|
r = parse_machine_argument(optarg, &arg_host, &arg_transport);
|
|
if (r < 0)
|
|
return r;
|
|
break;
|
|
|
|
case ARG_DISCOVER:
|
|
arg_discover = true;
|
|
break;
|
|
|
|
case 't':
|
|
r = free_and_strdup_warn(&arg_mount_type, optarg);
|
|
if (r < 0)
|
|
return r;
|
|
break;
|
|
|
|
case 'o':
|
|
r = free_and_strdup_warn(&arg_mount_options, optarg);
|
|
if (r < 0)
|
|
return r;
|
|
break;
|
|
|
|
case ARG_OWNER: {
|
|
const char *user = optarg;
|
|
|
|
r = get_user_creds(&user, &arg_uid, &arg_gid, NULL, NULL, 0);
|
|
if (r < 0)
|
|
return log_error_errno(r,
|
|
r == -EBADMSG ? "UID or GID of user %s are invalid."
|
|
: "Cannot use \"%s\" as owner: %m",
|
|
optarg);
|
|
break;
|
|
}
|
|
|
|
case ARG_FSCK:
|
|
r = parse_boolean_argument("--fsck=", optarg, &arg_fsck);
|
|
if (r < 0)
|
|
return r;
|
|
break;
|
|
|
|
case ARG_DESCRIPTION:
|
|
r = free_and_strdup_warn(&arg_description, optarg);
|
|
if (r < 0)
|
|
return r;
|
|
break;
|
|
|
|
case 'p':
|
|
if (strv_extend(&arg_property, optarg) < 0)
|
|
return log_oom();
|
|
|
|
break;
|
|
|
|
case 'A':
|
|
arg_action = ACTION_AUTOMOUNT;
|
|
break;
|
|
|
|
case ARG_AUTOMOUNT:
|
|
r = parse_boolean_argument("--automount=", optarg, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
arg_action = r ? ACTION_AUTOMOUNT : ACTION_MOUNT;
|
|
break;
|
|
|
|
case ARG_TIMEOUT_IDLE:
|
|
r = parse_sec(optarg, &arg_timeout_idle);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse timeout: %s", optarg);
|
|
|
|
break;
|
|
|
|
case ARG_AUTOMOUNT_PROPERTY:
|
|
if (strv_extend(&arg_automount_property, optarg) < 0)
|
|
return log_oom();
|
|
|
|
break;
|
|
|
|
case ARG_BIND_DEVICE:
|
|
arg_bind_device = true;
|
|
break;
|
|
|
|
case ARG_LIST:
|
|
arg_action = ACTION_LIST;
|
|
break;
|
|
|
|
case 'u':
|
|
arg_action = ACTION_UMOUNT;
|
|
break;
|
|
|
|
case 'G':
|
|
arg_aggressive_gc = true;
|
|
break;
|
|
|
|
case 'T':
|
|
arg_tmpfs = true;
|
|
break;
|
|
|
|
case ARG_JSON:
|
|
r = parse_json_argument(optarg, &arg_json_format_flags);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
break;
|
|
|
|
case ARG_CANONICALIZE:
|
|
r = parse_boolean_argument("--canonicalize=", optarg, &arg_canonicalize);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
break;
|
|
|
|
case '?':
|
|
return -EINVAL;
|
|
|
|
default:
|
|
assert_not_reached();
|
|
}
|
|
|
|
if (arg_runtime_scope == RUNTIME_SCOPE_USER) {
|
|
arg_ask_password = false;
|
|
|
|
if (arg_transport != BUS_TRANSPORT_LOCAL)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Execution in user context is not supported on non-local systems.");
|
|
}
|
|
|
|
if (arg_action == ACTION_LIST) {
|
|
if (optind < argc)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Too many arguments.");
|
|
|
|
if (arg_transport != BUS_TRANSPORT_LOCAL)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
|
|
"Listing devices only supported locally.");
|
|
} else if (arg_action == ACTION_UMOUNT) {
|
|
if (optind >= argc)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"At least one argument required.");
|
|
|
|
if (arg_transport != BUS_TRANSPORT_LOCAL || !arg_canonicalize)
|
|
for (int i = optind; i < argc; i++)
|
|
if (!path_is_absolute(argv[i]))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path must be absolute when operating remotely or when canonicalization is turned off: %s",
|
|
argv[i]);
|
|
} else {
|
|
if (optind >= argc)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"At least one argument required.");
|
|
|
|
if (argc > optind+2)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"More than two arguments are not allowed.");
|
|
|
|
if (arg_tmpfs) {
|
|
if (arg_discover)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"--discover cannot be used in conjunction with --tmpfs.");
|
|
|
|
if (argc <= optind+1) {
|
|
arg_mount_what = strdup("tmpfs");
|
|
if (!arg_mount_what)
|
|
return log_oom();
|
|
|
|
r = parse_where(argv[optind], &arg_mount_where);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
arg_mount_what = strdup(argv[optind]);
|
|
if (!arg_mount_what)
|
|
return log_oom();
|
|
}
|
|
|
|
if (!arg_mount_type) {
|
|
arg_mount_type = strdup("tmpfs");
|
|
if (!arg_mount_type)
|
|
return log_oom();
|
|
} else if (!streq(arg_mount_type, "tmpfs"))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"--tmpfs requested with incompatible --type=, refusing: %s",
|
|
arg_mount_type);
|
|
} else {
|
|
if (arg_mount_type && !fstype_is_blockdev_backed(arg_mount_type)) {
|
|
arg_mount_what = strdup(argv[optind]);
|
|
if (!arg_mount_what)
|
|
return log_oom();
|
|
} else {
|
|
_cleanup_free_ char *u = NULL;
|
|
const char *p = argv[optind];
|
|
|
|
if (arg_canonicalize) {
|
|
u = fstab_node_to_udev_node(p);
|
|
if (!u)
|
|
return log_oom();
|
|
p = u;
|
|
}
|
|
|
|
if (arg_transport == BUS_TRANSPORT_LOCAL && arg_canonicalize) {
|
|
r = chase(p, /* root= */ NULL, CHASE_TRIGGER_AUTOFS, &arg_mount_what, /* ret_fd= */ NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to chase path '%s': %m", p);
|
|
} else {
|
|
if (!path_is_absolute(p))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path must be absolute when operating remotely or when canonicalization is turned off: %s",
|
|
p);
|
|
|
|
r = path_simplify_alloc(p, &arg_mount_what);
|
|
if (r < 0)
|
|
return log_oom();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (argc > optind+1) {
|
|
r = parse_where(argv[optind+1], &arg_mount_where);
|
|
if (r < 0)
|
|
return r;
|
|
} else if (!arg_tmpfs)
|
|
arg_discover = true;
|
|
|
|
if (arg_discover && arg_transport != BUS_TRANSPORT_LOCAL)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
|
|
"Automatic mount location discovery is only supported locally.");
|
|
|
|
_cleanup_free_ char *dev_bound = NULL;
|
|
r = fstab_filter_options(arg_mount_options, "x-systemd.device-bound\0",
|
|
/* ret_namefound = */ NULL, &dev_bound, /* ret_values = */ NULL, /* ret_filtered = */ NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse mount options for x-systemd.device-bound=: %m");
|
|
if (r > 0 && !isempty(dev_bound)) {
|
|
/* If x-systemd.device-bound=no is explicitly specified, never bind automount unit
|
|
* to device either. */
|
|
r = parse_boolean(dev_bound);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Invalid x-systemd.device-bound= option: %s", dev_bound);
|
|
if (r == 0) {
|
|
log_full(arg_bind_device > 0 ? LOG_NOTICE : LOG_DEBUG,
|
|
"x-systemd.device-bound=no set, automatically disabling --bind-device.");
|
|
arg_bind_device = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) {
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(IN_SET(t, UNIT_MOUNT, UNIT_AUTOMOUNT));
|
|
|
|
if (!isempty(arg_description)) {
|
|
r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (arg_bind_device > 0 && is_device_path(arg_mount_what)) {
|
|
_cleanup_free_ char *device_unit = NULL;
|
|
|
|
r = unit_name_from_path(arg_mount_what, ".device", &device_unit);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m, "(sv)(sv)",
|
|
"After", "as", 1, device_unit,
|
|
"BindsTo", "as", 1, device_unit);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (arg_aggressive_gc) {
|
|
r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = bus_append_unit_property_assignment_many(m, t, properties);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int transient_mount_set_properties(sd_bus_message *m) {
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
r = transient_unit_set_properties(m, UNIT_MOUNT, arg_property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (arg_mount_what) {
|
|
r = sd_bus_message_append(m, "(sv)", "What", "s", arg_mount_what);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (arg_mount_type) {
|
|
r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_mount_type);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
_cleanup_free_ char *options = NULL;
|
|
|
|
/* Prepend uid=…,gid=… if arg_uid is set */
|
|
if (arg_uid != UID_INVALID) {
|
|
r = strextendf_with_separator(&options, ",",
|
|
"uid="UID_FMT",gid="GID_FMT, arg_uid, arg_gid);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
/* Override the default for tmpfs mounts. The kernel sets the sticky bit on the root directory by
|
|
* default. This makes sense for the case when the user does 'mount -t tmpfs tmpfs /tmp', but less so
|
|
* for other directories.
|
|
*
|
|
* Let's also set some reasonable limits. We use the current umask, to match what a command to create
|
|
* directory would use, e.g. mkdir. */
|
|
if (arg_tmpfs) {
|
|
mode_t mask;
|
|
|
|
r = get_process_umask(0, &mask);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
assert((mask & ~0777) == 0);
|
|
r = strextendf_with_separator(&options, ",",
|
|
"mode=0%o,nodev,nosuid%s", 0777 & ~mask, NESTED_TMPFS_LIMITS);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (arg_mount_options)
|
|
if (!strextend_with_separator(&options, ",", arg_mount_options))
|
|
return -ENOMEM;
|
|
|
|
if (options) {
|
|
log_debug("Using mount options: %s", options);
|
|
r = sd_bus_message_append(m, "(sv)", "Options", "s", options);
|
|
if (r < 0)
|
|
return r;
|
|
} else
|
|
log_debug("Not using any mount options");
|
|
|
|
if (arg_fsck) {
|
|
_cleanup_free_ char *fsck = NULL;
|
|
|
|
r = unit_name_from_path_instance("systemd-fsck", arg_mount_what, ".service", &fsck);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(m,
|
|
"(sv)(sv)",
|
|
"Requires", "as", 1, fsck,
|
|
"After", "as", 1, fsck);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int transient_automount_set_properties(sd_bus_message *m) {
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
r = transient_unit_set_properties(m, UNIT_AUTOMOUNT, arg_automount_property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (arg_timeout_idle != USEC_INFINITY) {
|
|
r = sd_bus_message_append(m, "(sv)", "TimeoutIdleUSec", "t", arg_timeout_idle);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int start_transient_mount(sd_bus *bus) {
|
|
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
|
|
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
|
|
_cleanup_free_ char *mount_unit = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
|
|
if (!arg_no_block) {
|
|
r = bus_wait_for_jobs_new(bus, &w);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Could not watch jobs: %m");
|
|
}
|
|
|
|
r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to make mount unit name: %m");
|
|
|
|
r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StartTransientUnit");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Name and mode */
|
|
r = sd_bus_message_append(m, "ss", mount_unit, "fail");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Properties */
|
|
r = sd_bus_message_open_container(m, 'a', "(sv)");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = transient_mount_set_properties(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* No auxiliary units */
|
|
r = sd_bus_message_append(m, "a(sa(sv))", 0);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
(void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
|
|
|
|
r = sd_bus_call(bus, m, 0, &error, &reply);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to start transient mount unit: %s", bus_error_message(&error, r));
|
|
|
|
if (w) {
|
|
const char *object;
|
|
|
|
r = sd_bus_message_read(reply, "o", &object);
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
r = bus_wait_for_jobs_one(w, object, arg_quiet ? 0 : BUS_WAIT_JOBS_LOG_ERROR, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (!arg_quiet)
|
|
log_info("Started unit %s%s%s for mount point: %s%s%s",
|
|
ansi_highlight(), mount_unit, ansi_normal(),
|
|
ansi_highlight(), arg_mount_where, ansi_normal());
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int start_transient_automount(sd_bus *bus) {
|
|
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
|
|
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
|
|
_cleanup_free_ char *automount_unit = NULL, *mount_unit = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
|
|
if (!arg_no_block) {
|
|
r = bus_wait_for_jobs_new(bus, &w);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Could not watch jobs: %m");
|
|
}
|
|
|
|
r = unit_name_from_path(arg_mount_where, ".automount", &automount_unit);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to make automount unit name: %m");
|
|
|
|
r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to make mount unit name: %m");
|
|
|
|
r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StartTransientUnit");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Name and mode */
|
|
r = sd_bus_message_append(m, "ss", automount_unit, "fail");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Properties */
|
|
r = sd_bus_message_open_container(m, 'a', "(sv)");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = transient_automount_set_properties(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Auxiliary units */
|
|
r = sd_bus_message_open_container(m, 'a', "(sa(sv))");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_open_container(m, 'r', "sa(sv)");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_append(m, "s", mount_unit);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_open_container(m, 'a', "(sv)");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = transient_mount_set_properties(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_close_container(m);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
(void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
|
|
|
|
r = sd_bus_call(bus, m, 0, &error, &reply);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to start transient automount unit: %s", bus_error_message(&error, r));
|
|
|
|
if (w) {
|
|
const char *object;
|
|
|
|
r = sd_bus_message_read(reply, "o", &object);
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
r = bus_wait_for_jobs_one(w, object, arg_quiet ? 0 : BUS_WAIT_JOBS_LOG_ERROR, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (!arg_quiet)
|
|
log_info("Started unit %s%s%s for mount point: %s%s%s",
|
|
ansi_highlight(), automount_unit, ansi_normal(),
|
|
ansi_highlight(), arg_mount_where, ansi_normal());
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int find_mount_points_by_source(const char *what, char ***ret) {
|
|
_cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
|
|
_cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
size_t n = 0;
|
|
int r;
|
|
|
|
assert(what);
|
|
assert(ret);
|
|
|
|
/* Obtain all mount points with source being "what" from /proc/self/mountinfo, return value shows
|
|
* the total number of them. */
|
|
|
|
r = libmount_parse_mountinfo(/* source = */ NULL, &table, &iter);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m");
|
|
|
|
for (;;) {
|
|
struct libmnt_fs *fs;
|
|
const char *source, *target;
|
|
|
|
r = sym_mnt_table_next_fs(table, iter, &fs);
|
|
if (r == 1)
|
|
break;
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m");
|
|
|
|
source = sym_mnt_fs_get_source(fs);
|
|
target = sym_mnt_fs_get_target(fs);
|
|
if (!source || !target)
|
|
continue;
|
|
|
|
if (!path_equal(source, what))
|
|
continue;
|
|
|
|
r = strv_extend_with_size(&l, &n, target);
|
|
if (r < 0)
|
|
return log_oom();
|
|
}
|
|
|
|
*ret = TAKE_PTR(l);
|
|
return n;
|
|
}
|
|
|
|
static int find_loop_device(const char *backing_file, sd_device **ret) {
|
|
_cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
|
|
int r;
|
|
|
|
assert(backing_file);
|
|
assert(ret);
|
|
|
|
r = sd_device_enumerator_new(&e);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = sd_device_enumerator_add_match_subsystem(e, "block", /* match = */ true);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add subsystem match: %m");
|
|
|
|
r = sd_device_enumerator_add_match_property(e, "ID_FS_USAGE", "filesystem");
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add property match: %m");
|
|
|
|
r = sd_device_enumerator_add_match_sysname(e, "loop*");
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add sysname match: %m");
|
|
|
|
r = sd_device_enumerator_add_match_sysattr(e, "loop/backing_file", /* value = */ NULL, /* match = */ true);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add sysattr match: %m");
|
|
|
|
FOREACH_DEVICE(e, dev) {
|
|
const char *s;
|
|
|
|
r = sd_device_get_sysattr_value(dev, "loop/backing_file", &s);
|
|
if (r < 0) {
|
|
log_device_debug_errno(dev, r, "Failed to read \"loop/backing_file\" sysattr, ignoring: %m");
|
|
continue;
|
|
}
|
|
|
|
if (inode_same(s, backing_file, 0) <= 0)
|
|
continue;
|
|
|
|
*ret = sd_device_ref(dev);
|
|
return 0;
|
|
}
|
|
|
|
return -ENXIO;
|
|
}
|
|
|
|
static int stop_mount(sd_bus *bus, const char *where, const char *suffix) {
|
|
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
|
|
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
_cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
|
|
_cleanup_free_ char *mount_unit = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(where);
|
|
assert(suffix);
|
|
|
|
if (!arg_no_block) {
|
|
r = bus_wait_for_jobs_new(bus, &w);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Could not watch jobs: %m");
|
|
}
|
|
|
|
r = unit_name_from_path(where, suffix, &mount_unit);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to make %s unit name from path '%s': %m", suffix + 1, where);
|
|
|
|
r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "StopUnit");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
/* Name and mode */
|
|
r = sd_bus_message_append(m, "ss", mount_unit, "fail");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
(void) polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
|
|
|
|
r = sd_bus_call(bus, m, 0, &error, &reply);
|
|
if (r < 0) {
|
|
if (streq(suffix, ".automount") &&
|
|
sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit"))
|
|
return 0;
|
|
return log_error_errno(r, "Failed to stop %s unit: %s", suffix + 1, bus_error_message(&error, r));
|
|
}
|
|
|
|
if (w) {
|
|
const char *object;
|
|
|
|
r = sd_bus_message_read(reply, "o", &object);
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
r = bus_wait_for_jobs_one(w, object, arg_quiet ? 0 : BUS_WAIT_JOBS_LOG_ERROR, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (!arg_quiet)
|
|
log_info("Stopped unit %s%s%s for mount point: %s%s%s",
|
|
ansi_highlight(), mount_unit, ansi_normal(),
|
|
ansi_highlight(), where, ansi_normal());
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stop_mounts(sd_bus *bus, const char *where) {
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(where);
|
|
|
|
if (path_equal(where, "/"))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Refusing to unmount root directory.");
|
|
|
|
if (!path_is_normalized(where))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path contains non-normalized components: %s", where);
|
|
|
|
r = stop_mount(bus, where, ".mount");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = stop_mount(bus, where, ".automount");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int umount_by_device(sd_bus *bus, sd_device *dev) {
|
|
_cleanup_strv_free_ char **list = NULL;
|
|
const char *v;
|
|
int r, ret = 0;
|
|
|
|
assert(bus);
|
|
assert(dev);
|
|
|
|
if (sd_device_get_property_value(dev, "SYSTEMD_MOUNT_WHERE", &v) >= 0)
|
|
ret = stop_mounts(bus, v);
|
|
|
|
r = sd_device_get_devname(dev, &v);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = find_mount_points_by_source(v, &list);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
STRV_FOREACH(l, list)
|
|
RET_GATHER(ret, stop_mounts(bus, *l));
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int umount_by_device_node(sd_bus *bus, const char *node) {
|
|
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
|
|
const char *v;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(node);
|
|
|
|
r = sd_device_new_from_devname(&dev, node);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get device from %s: %m", node);
|
|
|
|
r = sd_device_get_property_value(dev, "ID_FS_USAGE", &v);
|
|
if (r < 0)
|
|
return log_device_error_errno(dev, r, "Failed to get \"ID_FS_USAGE\" device property: %m");
|
|
|
|
if (!streq(v, "filesystem"))
|
|
return log_device_error_errno(dev, SYNTHETIC_ERRNO(EINVAL),
|
|
"%s does not contain a known file system.", node);
|
|
|
|
return umount_by_device(bus, dev);
|
|
}
|
|
|
|
static int umount_loop(sd_bus *bus, const char *backing_file) {
|
|
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
|
|
int r;
|
|
|
|
assert(backing_file);
|
|
|
|
r = find_loop_device(backing_file, &dev);
|
|
if (r < 0)
|
|
return log_error_errno(r, r == -ENXIO ? "File %s is not mounted." : "Can't get loop device for %s: %m", backing_file);
|
|
|
|
return umount_by_device(bus, dev);
|
|
}
|
|
|
|
static int action_umount(sd_bus *bus, int argc, char **argv) {
|
|
int r, ret = 0;
|
|
|
|
assert(bus);
|
|
assert(argv);
|
|
assert(argc > optind);
|
|
|
|
if (arg_transport != BUS_TRANSPORT_LOCAL || !arg_canonicalize) {
|
|
for (int i = optind; i < argc; i++) {
|
|
_cleanup_free_ char *p = NULL;
|
|
|
|
r = path_simplify_alloc(argv[i], &p);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
RET_GATHER(ret, stop_mounts(bus, p));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
for (int i = optind; i < argc; i++) {
|
|
_cleanup_free_ char *u = NULL, *p = NULL;
|
|
|
|
u = fstab_node_to_udev_node(argv[i]);
|
|
if (!u)
|
|
return log_oom();
|
|
|
|
_cleanup_close_ int fd = -EBADF;
|
|
r = chase(u, /* root= */ NULL, CHASE_TRIGGER_AUTOFS, &p, &fd);
|
|
if (r < 0) {
|
|
RET_GATHER(ret, log_error_errno(r, "Failed to chase path '%s': %m", u));
|
|
continue;
|
|
}
|
|
|
|
struct stat st;
|
|
if (fstat(fd, &st) < 0)
|
|
return log_error_errno(errno, "Can't stat '%s' (from %s): %m", p, argv[i]);
|
|
|
|
r = is_mount_point_at(fd, /* filename= */ NULL, /* flags= */ 0);
|
|
fd = safe_close(fd); /* before continuing make sure the dir is not keeping anything busy */
|
|
if (r > 0)
|
|
RET_GATHER(ret, stop_mounts(bus, p));
|
|
else {
|
|
/* This can realistically fail on pre-5.8 kernels that do not tell us via statx() if
|
|
* something is a mount point, hence handle this gracefully, and go by type as we did
|
|
* in pre-v258 times. */
|
|
if (r < 0)
|
|
log_warning_errno(r, "Failed to determine if '%s' is a mount point, ignoring: %m", u);
|
|
|
|
if (S_ISDIR(st.st_mode))
|
|
r = stop_mounts(bus, p);
|
|
else if (S_ISBLK(st.st_mode))
|
|
r = umount_by_device_node(bus, p);
|
|
else if (S_ISREG(st.st_mode))
|
|
r = umount_loop(bus, p);
|
|
else
|
|
r = log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Unknown file type for unmounting: %s (from %s)",
|
|
p, argv[i]);
|
|
RET_GATHER(ret, r);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int acquire_mount_type(sd_device *d) {
|
|
const char *v;
|
|
|
|
assert(d);
|
|
|
|
if (arg_mount_type)
|
|
return 0;
|
|
|
|
if (sd_device_get_property_value(d, "ID_FS_TYPE", &v) < 0)
|
|
return 0;
|
|
|
|
arg_mount_type = strdup(v);
|
|
if (!arg_mount_type)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered type=%s", arg_mount_type);
|
|
return 1;
|
|
}
|
|
|
|
static int acquire_mount_options(sd_device *d) {
|
|
const char *v;
|
|
|
|
assert(d);
|
|
|
|
if (arg_mount_options)
|
|
return 0;
|
|
|
|
if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_OPTIONS", &v) < 0)
|
|
return 0;
|
|
|
|
arg_mount_options = strdup(v);
|
|
if (!arg_mount_options)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered options=%s", arg_mount_options);
|
|
return 1;
|
|
}
|
|
|
|
static const char* get_label(sd_device *d) {
|
|
const char *label;
|
|
|
|
assert(d);
|
|
|
|
if (sd_device_get_property_value(d, "ID_FS_LABEL", &label) >= 0)
|
|
return label;
|
|
|
|
if (sd_device_get_property_value(d, "ID_PART_ENTRY_NAME", &label) >= 0)
|
|
return label;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int acquire_mount_where(sd_device *d) {
|
|
const char *v;
|
|
int r;
|
|
|
|
if (arg_mount_where)
|
|
return 0;
|
|
|
|
if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE", &v) < 0) {
|
|
_cleanup_free_ char *escaped = NULL, *devname_bn = NULL;
|
|
const char *name;
|
|
|
|
name = get_label(d);
|
|
if (!name)
|
|
(void) device_get_model_string(d, &name);
|
|
if (!name) {
|
|
const char *dn;
|
|
|
|
if (sd_device_get_devname(d, &dn) < 0)
|
|
return 0;
|
|
|
|
r = path_extract_filename(dn, &devname_bn);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to extract file name from '%s': %m", dn);
|
|
|
|
name = devname_bn;
|
|
}
|
|
|
|
escaped = xescape(name, "\\");
|
|
if (!escaped)
|
|
return log_oom();
|
|
if (!filename_is_valid(escaped))
|
|
return 0;
|
|
|
|
arg_mount_where = path_join("/run/media/system", escaped);
|
|
} else
|
|
arg_mount_where = strdup(v);
|
|
|
|
if (!arg_mount_where)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered where=%s", arg_mount_where);
|
|
return 1;
|
|
}
|
|
|
|
static int acquire_mount_where_for_loop_dev(sd_device *dev) {
|
|
_cleanup_strv_free_ char **list = NULL;
|
|
const char *node;
|
|
int r;
|
|
|
|
assert(dev);
|
|
|
|
if (arg_mount_where)
|
|
return 0;
|
|
|
|
r = sd_device_get_devname(dev, &node);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = find_mount_points_by_source(node, &list);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return log_device_error_errno(dev, SYNTHETIC_ERRNO(EINVAL),
|
|
"Can't find mount point of %s. It is expected that %s is already mounted on a place.",
|
|
node, node);
|
|
if (r >= 2)
|
|
return log_device_error_errno(dev, SYNTHETIC_ERRNO(EINVAL),
|
|
"%s is mounted on %d places. It is expected that %s is mounted on a place.",
|
|
node, r, node);
|
|
|
|
arg_mount_where = strdup(list[0]);
|
|
if (!arg_mount_where)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered where=%s", arg_mount_where);
|
|
return 1;
|
|
}
|
|
|
|
static int acquire_description(sd_device *d) {
|
|
const char *model = NULL, *label;
|
|
|
|
if (arg_description)
|
|
return 0;
|
|
|
|
(void) device_get_model_string(d, &model);
|
|
|
|
label = get_label(d);
|
|
if (!label)
|
|
(void) sd_device_get_property_value(d, "ID_PART_ENTRY_NUMBER", &label);
|
|
|
|
if (model && label)
|
|
arg_description = strjoin(model, " ", label);
|
|
else if (label)
|
|
arg_description = strdup(label);
|
|
else if (model)
|
|
arg_description = strdup(model);
|
|
else
|
|
return 0;
|
|
|
|
if (!arg_description)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered description=%s", arg_description);
|
|
return 1;
|
|
}
|
|
|
|
static int acquire_removable(sd_device *d) {
|
|
const char *v;
|
|
int r;
|
|
|
|
assert(d);
|
|
|
|
/* Shortcut this if there's no reason to check it */
|
|
if (arg_action != ACTION_DEFAULT && arg_timeout_idle_set && arg_bind_device >= 0)
|
|
return 0;
|
|
|
|
for (;;) {
|
|
if (sd_device_get_sysattr_value(d, "removable", &v) >= 0)
|
|
break;
|
|
|
|
r = sd_device_get_parent(d, &d);
|
|
if (r == -ENODEV)
|
|
return 0;
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = device_in_subsystem(d, "block");
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 0;
|
|
}
|
|
|
|
if (parse_boolean(v) <= 0)
|
|
return 0;
|
|
|
|
log_debug("Discovered removable device.");
|
|
|
|
if (arg_action == ACTION_DEFAULT) {
|
|
log_debug("Automatically turning on automount.");
|
|
arg_action = ACTION_AUTOMOUNT;
|
|
}
|
|
|
|
if (!arg_timeout_idle_set) {
|
|
log_debug("Setting idle timeout to 1s.");
|
|
arg_timeout_idle = USEC_PER_SEC;
|
|
}
|
|
|
|
if (arg_bind_device < 0) {
|
|
log_debug("Binding automount unit to device.");
|
|
arg_bind_device = true;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int discover_loop_backing_file(void) {
|
|
_cleanup_(sd_device_unrefp) sd_device *d = NULL;
|
|
int r;
|
|
|
|
r = find_loop_device(arg_mount_what, &d);
|
|
if (r == -ENXIO) {
|
|
_cleanup_free_ char *escaped = NULL, *bn = NULL;
|
|
|
|
if (arg_mount_where)
|
|
return 0;
|
|
|
|
r = path_extract_filename(arg_mount_what, &bn);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to extract file name from backing file path '%s': %m", arg_mount_what);
|
|
|
|
escaped = xescape(bn, "\\");
|
|
if (!escaped)
|
|
return log_oom();
|
|
if (!filename_is_valid(escaped))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Escaped name %s is not a valid filename.",
|
|
escaped);
|
|
|
|
arg_mount_where = path_join("/run/media/system", escaped);
|
|
if (!arg_mount_where)
|
|
return log_oom();
|
|
|
|
log_debug("Discovered where=%s", arg_mount_where);
|
|
return 0;
|
|
|
|
} else if (r < 0)
|
|
return log_error_errno(r, "Can't get loop device for %s: %m", arg_mount_what);
|
|
|
|
r = acquire_mount_type(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_mount_options(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_mount_where_for_loop_dev(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_description(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int discover_device(void) {
|
|
_cleanup_(sd_device_unrefp) sd_device *d = NULL;
|
|
struct stat st;
|
|
const char *v;
|
|
int r;
|
|
|
|
if (stat(arg_mount_what, &st) < 0)
|
|
return log_error_errno(errno, "Can't stat %s: %m", arg_mount_what);
|
|
|
|
if (S_ISREG(st.st_mode))
|
|
return discover_loop_backing_file();
|
|
|
|
if (!S_ISBLK(st.st_mode))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Unsupported mount source type for --discover: %s", arg_mount_what);
|
|
|
|
r = sd_device_new_from_stat_rdev(&d, &st);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get device from device number: %m");
|
|
|
|
if (sd_device_get_property_value(d, "ID_FS_USAGE", &v) < 0 || !streq(v, "filesystem"))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"%s does not contain a known file system.",
|
|
arg_mount_what);
|
|
|
|
r = acquire_mount_type(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_mount_options(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_mount_where(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_description(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = acquire_removable(d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int list_devices(void) {
|
|
enum {
|
|
COLUMN_NODE,
|
|
COLUMN_DISKSEQ,
|
|
COLUMN_PATH,
|
|
COLUMN_MODEL,
|
|
COLUMN_WWN,
|
|
COLUMN_FSTYPE,
|
|
COLUMN_LABEL,
|
|
COLUMN_UUID,
|
|
_COLUMN_MAX,
|
|
};
|
|
|
|
_cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
|
|
_cleanup_(table_unrefp) Table *table = NULL;
|
|
int r;
|
|
|
|
r = sd_device_enumerator_new(&e);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = sd_device_enumerator_add_match_subsystem(e, "block", true);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add block match: %m");
|
|
|
|
r = sd_device_enumerator_add_match_property(e, "ID_FS_USAGE", "filesystem");
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add property match: %m");
|
|
|
|
table = table_new("node", "diskseq", "path", "model", "wwn", "fstype", "label", "uuid");
|
|
if (!table)
|
|
return log_oom();
|
|
|
|
if (arg_full)
|
|
table_set_width(table, 0);
|
|
|
|
r = table_set_sort(table, (size_t) 0);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to set sort index: %m");
|
|
|
|
table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
|
|
|
|
FOREACH_DEVICE(e, d) {
|
|
for (unsigned c = 0; c < _COLUMN_MAX; c++) {
|
|
const char *x = NULL;
|
|
|
|
switch (c) {
|
|
|
|
case COLUMN_NODE:
|
|
(void) sd_device_get_devname(d, &x);
|
|
break;
|
|
|
|
case COLUMN_DISKSEQ: {
|
|
uint64_t ds;
|
|
|
|
r = sd_device_get_diskseq(d, &ds);
|
|
if (r < 0) {
|
|
log_debug_errno(r, "Failed to get diskseq of block device, ignoring: %m");
|
|
r = table_add_cell(table, NULL, TABLE_EMPTY, NULL);
|
|
} else
|
|
r = table_add_cell(table, NULL, TABLE_UINT64, &ds);
|
|
if (r < 0)
|
|
return table_log_add_error(r);
|
|
|
|
continue;
|
|
}
|
|
|
|
case COLUMN_PATH:
|
|
(void) sd_device_get_property_value(d, "ID_PATH", &x);
|
|
break;
|
|
|
|
case COLUMN_MODEL:
|
|
(void) device_get_model_string(d, &x);
|
|
break;
|
|
|
|
case COLUMN_WWN:
|
|
(void) sd_device_get_property_value(d, "ID_WWN", &x);
|
|
break;
|
|
|
|
case COLUMN_FSTYPE:
|
|
(void) sd_device_get_property_value(d, "ID_FS_TYPE", &x);
|
|
break;
|
|
|
|
case COLUMN_LABEL:
|
|
x = get_label(d);
|
|
break;
|
|
|
|
case COLUMN_UUID:
|
|
(void) sd_device_get_property_value(d, "ID_FS_UUID", &x);
|
|
break;
|
|
}
|
|
|
|
r = table_add_cell(table, NULL, c == COLUMN_NODE ? TABLE_PATH : TABLE_STRING, x);
|
|
if (r < 0)
|
|
return table_log_add_error(r);
|
|
}
|
|
}
|
|
|
|
return table_print_with_pager(table, arg_json_format_flags, arg_pager_flags, arg_legend);
|
|
}
|
|
|
|
static int run(int argc, char* argv[]) {
|
|
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
|
|
int r;
|
|
|
|
log_setup();
|
|
|
|
r = parse_argv(argc, argv);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
if (arg_action == ACTION_LIST)
|
|
return list_devices();
|
|
|
|
r = bus_connect_transport_systemd(arg_transport, arg_host, arg_runtime_scope, &bus);
|
|
if (r < 0)
|
|
return bus_log_connect_error(r, arg_transport, arg_runtime_scope);
|
|
|
|
(void) sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
|
|
|
|
if (arg_action == ACTION_UMOUNT)
|
|
return action_umount(bus, argc, argv);
|
|
|
|
if ((!arg_mount_type || fstype_is_blockdev_backed(arg_mount_type))
|
|
&& !path_is_normalized(arg_mount_what))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path contains non-normalized components: %s",
|
|
arg_mount_what);
|
|
|
|
if (arg_discover) {
|
|
r = discover_device();
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (!arg_mount_where)
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Can't figure out where to mount %s.",
|
|
arg_mount_what);
|
|
|
|
if (path_equal(arg_mount_where, "/"))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Refusing to operate on root directory.");
|
|
|
|
if (!path_is_normalized(arg_mount_where))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
|
|
"Path contains non-normalized components: %s",
|
|
arg_mount_where);
|
|
|
|
if (streq_ptr(arg_mount_type, "auto"))
|
|
arg_mount_type = mfree(arg_mount_type);
|
|
if (streq_ptr(arg_mount_options, "defaults"))
|
|
arg_mount_options = mfree(arg_mount_options);
|
|
|
|
if (!is_device_path(arg_mount_what))
|
|
arg_fsck = false;
|
|
|
|
if (arg_fsck && arg_mount_type && arg_transport == BUS_TRANSPORT_LOCAL) {
|
|
r = fsck_exists_for_fstype(arg_mount_type);
|
|
if (r < 0)
|
|
log_warning_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", arg_mount_type);
|
|
else if (r == 0) {
|
|
log_debug("Disabling file system check as fsck for %s doesn't exist.", arg_mount_type);
|
|
arg_fsck = false; /* fsck doesn't exist, let's not attempt it */
|
|
}
|
|
}
|
|
|
|
/* The kernel (properly) refuses mounting file systems with unknown uid=,gid= options,
|
|
* but not for all filesystem types. Let's try to catch the cases where the option
|
|
* would be used if the file system does not support it. It is also possible to
|
|
* autodetect the file system, but that's only possible with disk-based file systems
|
|
* which incidentally seem to be implemented more carefully and reject unknown options,
|
|
* so it's probably OK that we do the check only when the type is specified.
|
|
*/
|
|
if (arg_mount_type &&
|
|
!streq(arg_mount_type, "auto") &&
|
|
arg_uid != UID_INVALID &&
|
|
!fstype_can_uid_gid(arg_mount_type))
|
|
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
|
|
"File system type %s is not known to support uid=/gid=, refusing.",
|
|
arg_mount_type);
|
|
|
|
switch (arg_action) {
|
|
|
|
case ACTION_MOUNT:
|
|
case ACTION_DEFAULT:
|
|
return start_transient_mount(bus);
|
|
|
|
case ACTION_AUTOMOUNT:
|
|
return start_transient_automount(bus);
|
|
|
|
default:
|
|
assert_not_reached();
|
|
}
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION(run);
|