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-rw-r--r--src/mount/mount-tool.c1590
1 files changed, 1590 insertions, 0 deletions
diff --git a/src/mount/mount-tool.c b/src/mount/mount-tool.c
new file mode 100644
index 0000000..f626f07
--- /dev/null
+++ b/src/mount/mount-tool.c
@@ -0,0 +1,1590 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <getopt.h>
+
+#include "sd-bus.h"
+#include "sd-device.h"
+
+#include "build.h"
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "bus-unit-util.h"
+#include "bus-wait-for-jobs.h"
+#include "chase.h"
+#include "device-util.h"
+#include "dirent-util.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "format-table.h"
+#include "format-util.h"
+#include "fs-util.h"
+#include "fstab-util.h"
+#include "libmount-util.h"
+#include "main-func.h"
+#include "mount-util.h"
+#include "mountpoint-util.h"
+#include "pager.h"
+#include "parse-argument.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "pretty-print.h"
+#include "process-util.h"
+#include "sort-util.h"
+#include "spawn-polkit-agent.h"
+#include "stat-util.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "udev-util.h"
+#include "umask-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_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) {
+ r = chase(input, NULL, CHASE_NONEXISTENT, ret_where, 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: %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"
+ "%s [OPTIONS...] %sWHAT|WHERE...\n\n"
+ "Establish a mount or auto-mount point transiently.\n\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"
+ " --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"
+ "\nSee the %s for details.\n",
+ program_invocation_short_name,
+ streq(program_invocation_short_name, "systemd-umount") ? "" : "--umount ",
+ link);
+
+ 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,
+ };
+
+ 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' },
+ {},
+ };
+
+ 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':
+ arg_transport = BUS_TRANSPORT_MACHINE;
+ arg_host = optarg;
+ 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 '?':
+ 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)
+ 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: %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 (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 (!strv_contains(arg_property, "Type=tmpfs") &&
+ strv_extend(&arg_property, "Type=tmpfs") < 0)
+ return log_oom();
+ } 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 if (arg_transport == BUS_TRANSPORT_LOCAL) {
+ _cleanup_free_ char *u = NULL;
+
+ u = fstab_node_to_udev_node(argv[optind]);
+ if (!u)
+ return log_oom();
+
+ r = chase(u, NULL, 0, &arg_mount_what, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to make path %s absolute: %m", u);
+
+ } else {
+ if (!path_is_absolute(argv[optind]))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Path must be absolute when operating remotely: %s",
+ argv[optind]);
+
+ r = path_simplify_alloc(argv[optind], &arg_mount_what);
+ if (r < 0)
+ return log_error_errno(r, "Failed to simplify path: %m");
+ }
+ }
+
+ 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.");
+ }
+
+ return 1;
+}
+
+static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) {
+ int r;
+
+ if (!isempty(arg_description)) {
+ r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
+ if (r < 0)
+ return r;
+ }
+
+ if (arg_bind_device && 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,
+ char **argv) {
+
+ _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;
+
+ 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);
+
+ r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+ 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);
+
+ /* Auxiliary units */
+ r = sd_bus_message_append(m, "a(sa(sv))", 0);
+ if (r < 0)
+ return bus_log_create_error(r);
+
+ 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, 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,
+ char **argv) {
+
+ _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;
+
+ 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);
+
+ r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+ 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);
+
+ 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, 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(const char *what, char ***list) {
+ _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(list);
+
+ /* Returns all mount points obtained from /proc/self/mountinfo in *list,
+ * and the number of mount points as return value. */
+
+ r = libmount_parse(NULL, 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 = 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 = mnt_fs_get_source(fs);
+ target = mnt_fs_get_target(fs);
+ if (!source || !target)
+ continue;
+
+ if (!path_equal(source, what))
+ continue;
+
+ /* one extra slot is needed for the terminating NULL */
+ if (!GREEDY_REALLOC0(l, n + 2))
+ return log_oom();
+
+ l[n] = strdup(target);
+ if (!l[n])
+ return log_oom();
+ n++;
+ }
+
+ if (!GREEDY_REALLOC0(l, n + 1))
+ return log_oom();
+
+ *list = 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;
+
+ 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);
+
+ r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+ 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);
+
+ 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, 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;
+
+ if (path_equal(where, "/"))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Refusing to operate on root directory: %s", where);
+
+ 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(v, &list);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(l, list) {
+ r = stop_mounts(bus, *l);
+ if (r < 0)
+ ret = r;
+ }
+
+ 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, r2 = 0;
+
+ if (arg_transport != BUS_TRANSPORT_LOCAL) {
+ for (int i = optind; i < argc; i++) {
+ _cleanup_free_ char *p = NULL;
+
+ r = path_simplify_alloc(argv[i], &p);
+ if (r < 0)
+ return r;
+
+ r = stop_mounts(bus, p);
+ if (r < 0)
+ r2 = r;
+ }
+ return r2;
+ }
+
+ for (int i = optind; i < argc; i++) {
+ _cleanup_free_ char *u = NULL, *p = NULL;
+ struct stat st;
+
+ u = fstab_node_to_udev_node(argv[i]);
+ if (!u)
+ return log_oom();
+
+ r = chase(u, NULL, 0, &p, NULL);
+ if (r < 0) {
+ r2 = log_error_errno(r, "Failed to make path %s absolute: %m", argv[i]);
+ continue;
+ }
+
+ if (stat(p, &st) < 0)
+ return log_error_errno(errno, "Can't stat %s (from %s): %m", p, argv[i]);
+
+ 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 if (S_ISDIR(st.st_mode))
+ r = stop_mounts(bus, p);
+ else {
+ log_error("Invalid file type: %s (from %s)", p, argv[i]);
+ r = -EINVAL;
+ }
+
+ if (r < 0)
+ r2 = r;
+ }
+
+ return r2;
+}
+
+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(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;
+
+ /* 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;
+
+ if (sd_device_get_parent(d, &d) < 0)
+ return 0;
+
+ if (sd_device_get_subsystem(d, &v) < 0 || !streq(v, "block"))
+ 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 < 0 && r != -ENXIO)
+ return log_error_errno(errno, "Can't get loop device for %s: %m", arg_mount_what);
+
+ 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;
+ }
+
+ 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),
+ "Invalid file type: %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_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", "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_header(table, arg_legend);
+ 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_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);
+ }
+ }
+
+ pager_open(arg_pager_flags);
+
+ r = table_print(table, NULL);
+ if (r < 0)
+ return table_log_print_error(r);
+
+ return 0;
+}
+
+static int run(int argc, char* argv[]) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ log_show_color(true);
+ log_parse_environment();
+ log_open();
+
+ 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);
+
+ 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:
+ r = start_transient_mount(bus, argv + optind);
+ break;
+
+ case ACTION_AUTOMOUNT:
+ r = start_transient_automount(bus, argv + optind);
+ break;
+
+ default:
+ assert_not_reached();
+ }
+
+ return r;
+}
+
+DEFINE_MAIN_FUNCTION(run);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 18:07:45 +0000