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-rw-r--r--src/mount/mount-tool.c1620
1 files changed, 1620 insertions, 0 deletions
diff --git a/src/mount/mount-tool.c b/src/mount/mount-tool.c
new file mode 100644
index 0000000..bbbc91c
--- /dev/null
+++ b/src/mount/mount-tool.c
@@ -0,0 +1,1620 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <getopt.h>
+
+#include "sd-bus.h"
+#include "sd-device.h"
+
+#include "bus-error.h"
+#include "bus-unit-util.h"
+#include "bus-util.h"
+#include "device-util.h"
+#include "dirent-util.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "fstab-util.h"
+#include "main-func.h"
+#include "mount-util.h"
+#include "mountpoint-util.h"
+#include "pager.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "pretty-print.h"
+#include "spawn-polkit-agent.h"
+#include "stat-util.h"
+#include "strv.h"
+#include "unit-def.h"
+#include "unit-name.h"
+#include "user-util.h"
+#include "terminal-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_ask_password = true;
+static bool arg_quiet = false;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
+static bool arg_user = false;
+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_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 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...] --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-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"
+ "\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_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-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' },
+ { "collect", no_argument, NULL, 'G' },
+ {},
+ };
+
+ int r, c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ if (strstr(program_invocation_short_name, "systemd-umount"))
+ arg_action = ACTION_UMOUNT;
+
+ while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:AuG", 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_ASK_PASSWORD:
+ arg_ask_password = false;
+ break;
+
+ case 'q':
+ arg_quiet = true;
+ break;
+
+ case ARG_USER:
+ arg_user = true;
+ break;
+
+ case ARG_SYSTEM:
+ arg_user = false;
+ 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':
+ if (free_and_strdup(&arg_mount_type, optarg) < 0)
+ return log_oom();
+ break;
+
+ case 'o':
+ if (free_and_strdup(&arg_mount_options, optarg) < 0)
+ return log_oom();
+ 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(optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse --fsck= argument: %s", optarg);
+
+ arg_fsck = r;
+ break;
+
+ case ARG_DESCRIPTION:
+ if (free_and_strdup(&arg_description, optarg) < 0)
+ return log_oom();
+ 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(optarg);
+ if (r < 0)
+ return log_error_errno(r, "--automount= expects a valid boolean parameter: %s", optarg);
+
+ 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 '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ if (arg_user && 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) {
+ int i;
+
+ for (i = optind; i < argc; i++)
+ if (!path_is_absolute(argv[i]) )
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Only absolute path is supported: %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),
+ "At most two arguments required.");
+
+ if (arg_mount_type && (fstype_is_api_vfs(arg_mount_type) || fstype_is_network(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_symlinks(u, NULL, 0, &arg_mount_what);
+ if (r < 0)
+ return log_error_errno(r, "Failed to make path %s absolute: %m", u);
+ } else {
+ arg_mount_what = strdup(argv[optind]);
+ if (!arg_mount_what)
+ return log_oom();
+
+ path_simplify(arg_mount_what, false);
+
+ if (!path_is_absolute(arg_mount_what))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Only absolute path is supported: %s", arg_mount_what);
+ }
+
+ if (argc > optind+1) {
+ if (arg_transport == BUS_TRANSPORT_LOCAL) {
+ r = chase_symlinks(argv[optind+1], NULL, CHASE_NONEXISTENT, &arg_mount_where);
+ if (r < 0)
+ return log_error_errno(r, "Failed to make path %s absolute: %m", argv[optind+1]);
+ } else {
+ arg_mount_where = strdup(argv[optind+1]);
+ if (!arg_mount_where)
+ return log_oom();
+
+ path_simplify(arg_mount_where, false);
+
+ if (!path_is_absolute(arg_mount_where))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Only absolute path is supported: %s", arg_mount_where);
+ }
+ } else
+ 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) {
+ _cleanup_free_ char *options = NULL;
+ 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;
+ }
+
+ /* Prepend uid=…,gid=… if arg_uid is set */
+ if (arg_uid != UID_INVALID) {
+ r = asprintf(&options,
+ "uid=" UID_FMT ",gid=" GID_FMT "%s%s",
+ arg_uid, arg_gid,
+ arg_mount_options ? "," : "", strempty(arg_mount_options));
+ if (r < 0)
+ return -ENOMEM;
+ }
+
+ if (options || arg_mount_options) {
+ log_debug("Using mount options: %s", options ?: arg_mount_options);
+
+ r = sd_bus_message_append(m, "(sv)", "Options", "s", options ?: arg_mount_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 = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "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);
+ 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 = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "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);
+ 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_fclose_ FILE *proc_self_mountinfo = NULL;
+ _cleanup_strv_free_ char **l = NULL;
+ size_t bufsize = 0, n = 0;
+
+ assert(what);
+ assert(list);
+
+ /* Returns all mount points obtained from /proc/self/mountinfo in *list,
+ * and the number of mount points as return value. */
+
+ proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
+ if (!proc_self_mountinfo)
+ return log_error_errno(errno, "Can't open /proc/self/mountinfo: %m");
+
+ for (;;) {
+ _cleanup_free_ char *path = NULL, *where = NULL, *dev = NULL;
+ int r;
+
+ r = fscanf(proc_self_mountinfo,
+ "%*s " /* (1) mount id */
+ "%*s " /* (2) parent id */
+ "%*s " /* (3) major:minor */
+ "%*s " /* (4) root */
+ "%ms " /* (5) mount point */
+ "%*s" /* (6) mount options */
+ "%*[^-]" /* (7) optional fields */
+ "- " /* (8) separator */
+ "%*s " /* (9) file system type */
+ "%ms" /* (10) mount source */
+ "%*s" /* (11) mount options 2 */
+ "%*[^\n]", /* some rubbish at the end */
+ &path, &dev);
+ if (r != 2) {
+ if (r == EOF)
+ break;
+
+ continue;
+ }
+
+ if (!streq(what, dev))
+ continue;
+
+ r = cunescape(path, UNESCAPE_RELAX, &where);
+ if (r < 0)
+ continue;
+
+ /* one extra slot is needed for the terminating NULL */
+ if (!GREEDY_REALLOC(l, bufsize, n + 2))
+ return log_oom();
+
+ l[n++] = TAKE_PTR(where);
+ }
+
+ if (!GREEDY_REALLOC(l, bufsize, n + 1))
+ return log_oom();
+
+ l[n] = NULL;
+ *list = TAKE_PTR(l);
+
+ return n;
+}
+
+static int find_loop_device(const char *backing_file, char **loop_dev) {
+ _cleanup_closedir_ DIR *d = NULL;
+ struct dirent *de;
+ _cleanup_free_ char *l = NULL;
+
+ assert(backing_file);
+ assert(loop_dev);
+
+ d = opendir("/sys/devices/virtual/block");
+ if (!d)
+ return -errno;
+
+ FOREACH_DIRENT(de, d, return -errno) {
+ _cleanup_free_ char *sys = NULL, *fname = NULL;
+ int r;
+
+ dirent_ensure_type(d, de);
+
+ if (de->d_type != DT_DIR)
+ continue;
+
+ if (!startswith(de->d_name, "loop"))
+ continue;
+
+ sys = strjoin("/sys/devices/virtual/block/", de->d_name, "/loop/backing_file");
+ if (!sys)
+ return -ENOMEM;
+
+ r = read_one_line_file(sys, &fname);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to read %s, ignoring: %m", sys);
+ continue;
+ }
+
+ if (files_same(fname, backing_file, 0) <= 0)
+ continue;
+
+ l = strjoin("/dev/", de->d_name);
+ if (!l)
+ return -ENOMEM;
+
+ break;
+ }
+
+ if (!l)
+ return -ENXIO;
+
+ *loop_dev = TAKE_PTR(l);
+
+ return 0;
+}
+
+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 = sd_bus_message_new_method_call(
+ bus,
+ &m,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "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);
+ 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, const char *what) {
+ _cleanup_(sd_device_unrefp) sd_device *d = NULL;
+ _cleanup_strv_free_ char **list = NULL;
+ struct stat st;
+ const char *v;
+ char **l;
+ int r, r2 = 0;
+
+ assert(what);
+
+ if (stat(what, &st) < 0)
+ return log_error_errno(errno, "Can't stat %s: %m", what);
+
+ if (!S_ISBLK(st.st_mode)) {
+ log_error("Not a block device: %s", what);
+ return -ENOTBLK;
+ }
+
+ r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get device from device number: %m");
+
+ r = sd_device_get_property_value(d, "ID_FS_USAGE", &v);
+ if (r < 0)
+ return log_device_error_errno(d, r, "Failed to get device property: %m");
+
+ if (!streq(v, "filesystem")) {
+ log_device_error(d, "%s does not contain a known file system.", what);
+ return -EINVAL;
+ }
+
+ if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE", &v) >= 0)
+ r2 = stop_mounts(bus, v);
+
+ r = find_mount_points(what, &list);
+ if (r < 0)
+ return r;
+
+ for (l = list; *l; l++) {
+ r = stop_mounts(bus, *l);
+ if (r < 0)
+ r2 = r;
+ }
+
+ return r2;
+}
+
+static int umount_loop(sd_bus *bus, const char *backing_file) {
+ _cleanup_free_ char *loop_dev = NULL;
+ int r;
+
+ assert(backing_file);
+
+ r = find_loop_device(backing_file, &loop_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, loop_dev);
+}
+
+static int action_umount(
+ sd_bus *bus,
+ int argc,
+ char **argv) {
+
+ int i, r, r2 = 0;
+
+ if (arg_transport != BUS_TRANSPORT_LOCAL) {
+ for (i = optind; i < argc; i++) {
+ _cleanup_free_ char *p = NULL;
+
+ p = strdup(argv[i]);
+ if (!p)
+ return log_oom();
+
+ path_simplify(p, false);
+
+ r = stop_mounts(bus, p);
+ if (r < 0)
+ r2 = r;
+ }
+ return r2;
+ }
+
+ for (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_symlinks(u, NULL, 0, &p);
+ 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(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_model(sd_device *d) {
+ const char *model;
+
+ assert(d);
+
+ if (sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model) >= 0)
+ return model;
+
+ if (sd_device_get_property_value(d, "ID_MODEL", &model) >= 0)
+ return model;
+
+ return NULL;
+}
+
+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;
+
+ if (arg_mount_where)
+ return 0;
+
+ if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE", &v) < 0) {
+ _cleanup_free_ char *escaped = NULL;
+ const char *name;
+
+ name = get_label(d);
+ if (!name)
+ name = get_model(d);
+ if (!name) {
+ const char *dn;
+
+ if (sd_device_get_devname(d, &dn) < 0)
+ return 0;
+
+ name = basename(dn);
+ }
+
+ escaped = xescape(name, "\\");
+ if (!escaped)
+ return log_oom();
+ if (!filename_is_valid(escaped))
+ return 0;
+
+ arg_mount_where = strjoin("/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(const char *loop_dev) {
+ _cleanup_strv_free_ char **list = NULL;
+ int r;
+
+ if (arg_mount_where)
+ return 0;
+
+ r = find_mount_points(loop_dev, &list);
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Can't find mount point of %s. It is expected that %s is already mounted on a place.",
+ loop_dev, loop_dev);
+ else if (r >= 2)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s is mounted on %d places. It is expected that %s is mounted on a place.",
+ loop_dev, r, loop_dev);
+
+ 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, *label;
+
+ if (arg_description)
+ return 0;
+
+ model = get_model(d);
+
+ 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;
+ _cleanup_free_ char *loop_dev = NULL;
+ struct stat st;
+ const char *v;
+ int r;
+
+ r = find_loop_device(arg_mount_what, &loop_dev);
+ 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;
+
+ if (arg_mount_where)
+ return 0;
+
+ escaped = xescape(basename(arg_mount_what), "\\");
+ if (!escaped)
+ return log_oom();
+ if (!filename_is_valid(escaped)) {
+ log_error("Escaped name %s is not a valid filename.", escaped);
+ return -EINVAL;
+ }
+
+ arg_mount_where = strjoin("/run/media/system/", escaped);
+ if (!arg_mount_where)
+ return log_oom();
+
+ log_debug("Discovered where=%s", arg_mount_where);
+ return 0;
+ }
+
+ if (stat(loop_dev, &st) < 0)
+ return log_error_errno(errno, "Can't stat %s: %m", loop_dev);
+
+ if (!S_ISBLK(st.st_mode)) {
+ log_error("Invalid file type: %s", loop_dev);
+ return -EINVAL;
+ }
+
+ r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
+ 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")) {
+ log_device_error(d, "%s does not contain a known file system.", arg_mount_what);
+ return -EINVAL;
+ }
+
+ 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(loop_dev);
+ 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)) {
+ log_error("Invalid file type: %s", arg_mount_what);
+ return -EINVAL;
+ }
+
+ r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
+ 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")) {
+ log_error("%s does not contain a known file system.", arg_mount_what);
+ return -EINVAL;
+ }
+
+ 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;
+}
+
+enum {
+ COLUMN_NODE,
+ COLUMN_PATH,
+ COLUMN_MODEL,
+ COLUMN_WWN,
+ COLUMN_FSTYPE,
+ COLUMN_LABEL,
+ COLUMN_UUID,
+ _COLUMN_MAX,
+};
+
+struct item {
+ char* columns[_COLUMN_MAX];
+};
+
+static int compare_item(const struct item *a, const struct item *b) {
+ if (a->columns[COLUMN_NODE] == b->columns[COLUMN_NODE])
+ return 0;
+ if (!a->columns[COLUMN_NODE])
+ return 1;
+ if (!b->columns[COLUMN_NODE])
+ return -1;
+
+ return path_compare(a->columns[COLUMN_NODE], b->columns[COLUMN_NODE]);
+}
+
+static int list_devices(void) {
+
+ static const char * const titles[_COLUMN_MAX] = {
+ [COLUMN_NODE] = "NODE",
+ [COLUMN_PATH] = "PATH",
+ [COLUMN_MODEL] = "MODEL",
+ [COLUMN_WWN] = "WWN",
+ [COLUMN_FSTYPE] = "TYPE",
+ [COLUMN_LABEL] = "LABEL",
+ [COLUMN_UUID] = "UUID"
+ };
+
+ _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
+ size_t n_allocated = 0, n = 0, i;
+ size_t column_width[_COLUMN_MAX];
+ struct item *items = NULL;
+ sd_device *d;
+ unsigned c;
+ int r;
+
+ for (c = 0; c < _COLUMN_MAX; c++)
+ column_width[c] = strlen(titles[c]);
+
+ 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");
+
+ FOREACH_DEVICE(e, d) {
+ struct item *j;
+
+ if (!GREEDY_REALLOC0(items, n_allocated, n+1)) {
+ r = log_oom();
+ goto finish;
+ }
+
+ j = items + n++;
+
+ for (c = 0; c < _COLUMN_MAX; c++) {
+ const char *x = NULL;
+ size_t k;
+
+ 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:
+ x = get_model(d);
+ 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;
+ }
+
+ if (isempty(x))
+ continue;
+
+ j->columns[c] = strdup(x);
+ if (!j->columns[c]) {
+ r = log_oom();
+ goto finish;
+ }
+
+ k = strlen(x);
+ if (k > column_width[c])
+ column_width[c] = k;
+ }
+ }
+
+ if (n == 0) {
+ log_info("No devices found.");
+ goto finish;
+ }
+
+ typesafe_qsort(items, n, compare_item);
+
+ (void) pager_open(arg_pager_flags);
+
+ fputs(ansi_underline(), stdout);
+ for (c = 0; c < _COLUMN_MAX; c++) {
+ if (c > 0)
+ fputc(' ', stdout);
+
+ printf("%-*s", (int) column_width[c], titles[c]);
+ }
+ fputs(ansi_normal(), stdout);
+ fputc('\n', stdout);
+
+ for (i = 0; i < n; i++) {
+ for (c = 0; c < _COLUMN_MAX; c++) {
+ if (c > 0)
+ fputc(' ', stdout);
+
+ printf("%-*s", (int) column_width[c], strna(items[i].columns[c]));
+ }
+ fputc('\n', stdout);
+ }
+
+ r = 0;
+
+finish:
+ for (i = 0; i < n; i++)
+ for (c = 0; c < _COLUMN_MAX; c++)
+ free(items[i].columns[c]);
+
+ free(items);
+ return r;
+}
+
+static int run(int argc, char* argv[]) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int r;
+
+ 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_user, &bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to create bus connection: %m");
+
+ if (arg_action == ACTION_UMOUNT)
+ return action_umount(bus, argc, argv);
+
+ if (!path_is_normalized(arg_mount_what)) {
+ log_error("Path contains non-normalized components: %s", arg_mount_what);
+ return -EINVAL;
+ }
+
+ if (arg_discover) {
+ r = discover_device();
+ if (r < 0)
+ return r;
+ }
+
+ if (!arg_mount_where) {
+ log_error("Can't figure out where to mount %s.", arg_mount_what);
+ return -EINVAL;
+ }
+
+ if (path_equal(arg_mount_where, "/")) {
+ log_error("Refusing to operate on root directory.");
+ return -EINVAL;
+ }
+
+ if (!path_is_normalized(arg_mount_where)) {
+ log_error("Path contains non-normalized components: %s", arg_mount_where);
+ return -EINVAL;
+ }
+
+ 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(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)) {
+ log_error("File system type %s is not known to support uid=/gid=, refusing.",
+ arg_mount_type);
+ return -EOPNOTSUPP;
+ }
+
+ 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("Unexpected action.");
+ }
+
+ return r;
+}
+
+DEFINE_MAIN_FUNCTION(run);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 17:15:27 +0000