X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmount.c;h=3f8cf8a68f004cb6b6bedac954c804ee2509f5f9;hp=6c768a3d0208647b203575bf66ecf1700a62c5cf;hb=62bca2c657bf95fd1f69935eef09915afa5c69d9;hpb=5430f7f2bc7330f3088b894166bf3524a067e3d8 diff --git a/src/core/mount.c b/src/core/mount.c index 6c768a3d0..3f8cf8a68 100644 --- a/src/core/mount.c +++ b/src/core/mount.c @@ -32,6 +32,7 @@ #include "log.h" #include "strv.h" #include "mkdir.h" +#include "path-util.h" #include "mount-setup.h" #include "unit-name.h" #include "dbus-mount.h" @@ -67,9 +68,13 @@ static void mount_init(Unit *u) { exec_context_init(&m->exec_context); - /* The stdio/kmsg bridge socket is on /, in order to avoid a - * dep loop, don't use kmsg logging for -.mount */ - if (!unit_has_name(u, "-.mount")) { + if (unit_has_name(u, "-.mount")) { + /* Don't allow start/stop for root directory */ + UNIT(m)->refuse_manual_start = true; + UNIT(m)->refuse_manual_stop = true; + } else { + /* The stdio/kmsg bridge socket is on /, in order to avoid a + * dep loop, don't use kmsg logging for -.mount */ m->exec_context.std_output = u->manager->default_std_output; m->exec_context.std_error = u->manager->default_std_error; } @@ -115,7 +120,6 @@ static void mount_done(Unit *u) { free(m->where); m->where = NULL; - mount_parameters_done(&m->parameters_etc_fstab); mount_parameters_done(&m->parameters_proc_self_mountinfo); mount_parameters_done(&m->parameters_fragment); @@ -128,13 +132,11 @@ static void mount_done(Unit *u) { unit_unwatch_timer(u, &m->timer_watch); } -static MountParameters* get_mount_parameters_configured(Mount *m) { +static MountParameters* get_mount_parameters_fragment(Mount *m) { assert(m); if (m->from_fragment) return &m->parameters_fragment; - else if (m->from_etc_fstab) - return &m->parameters_etc_fstab; return NULL; } @@ -145,7 +147,7 @@ static MountParameters* get_mount_parameters(Mount *m) { if (m->from_proc_self_mountinfo) return &m->parameters_proc_self_mountinfo; - return get_mount_parameters_configured(m); + return get_mount_parameters_fragment(m); } static int mount_add_mount_links(Mount *m) { @@ -155,7 +157,7 @@ static int mount_add_mount_links(Mount *m) { assert(m); - pm = get_mount_parameters_configured(m); + pm = get_mount_parameters_fragment(m); /* Adds in links to other mount points that might lie below or * above us in the hierarchy */ @@ -170,7 +172,7 @@ static int mount_add_mount_links(Mount *m) { if (UNIT(n)->load_state != UNIT_LOADED) continue; - pn = get_mount_parameters_configured(n); + pn = get_mount_parameters_fragment(n); if (path_startswith(m->where, n->where)) { @@ -263,6 +265,21 @@ static int mount_add_socket_links(Mount *m) { return 0; } +static int mount_add_requires_mounts_links(Mount *m) { + Unit *other; + int r; + + assert(m); + + LIST_FOREACH(has_requires_mounts_for, other, UNIT(m)->manager->has_requires_mounts_for) { + r = unit_add_one_mount_link(other, m); + if (r < 0) + return r; + } + + return 0; +} + static char* mount_test_option(const char *haystack, const char *needle) { struct mntent me; @@ -320,165 +337,113 @@ static bool needs_quota(MountParameters *p) { mount_test_option(p->options, "grpjquota"); } -static int mount_add_fstab_links(Mount *m) { - const char *target, *after, *tu_wants = NULL; - MountParameters *p; - Unit *tu; - int r; - bool noauto, nofail, handle, automount; - - assert(m); - - if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) - return 0; - - if (!(p = get_mount_parameters_configured(m))) - return 0; - - if (p != &m->parameters_etc_fstab) - return 0; - - noauto = !!mount_test_option(p->options, "noauto"); - nofail = !!mount_test_option(p->options, "nofail"); - automount = - mount_test_option(p->options, "comment=systemd.automount") || - mount_test_option(p->options, "x-systemd-automount"); - handle = - automount || - mount_test_option(p->options, "comment=systemd.mount") || - mount_test_option(p->options, "x-systemd-mount") || - UNIT(m)->manager->mount_auto; - - if (mount_is_network(p)) { - target = SPECIAL_REMOTE_FS_TARGET; - after = tu_wants = SPECIAL_REMOTE_FS_PRE_TARGET; - } else { - target = SPECIAL_LOCAL_FS_TARGET; - after = SPECIAL_LOCAL_FS_PRE_TARGET; - } - - r = manager_load_unit(UNIT(m)->manager, target, NULL, NULL, &tu); - if (r < 0) - return r; - - if (tu_wants) { - r = unit_add_dependency_by_name(tu, UNIT_WANTS, tu_wants, NULL, true); - if (r < 0) - return r; - } - - if (after) { - r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after, NULL, true); - if (r < 0) - return r; - } - - if (automount) { - Unit *am; - - if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0) - return r; - - /* If auto is configured as well also pull in the - * mount right-away, but don't rely on it. */ - if (!noauto) /* automount + auto */ - if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0) - return r; - - /* Install automount unit */ - if (!nofail) /* automount + fail */ - return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, am, true); - else /* automount + nofail */ - return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, am, true); - - } else if (handle && !noauto) { - - /* Automatically add mount points that aren't natively - * configured to local-fs.target */ - - if (!nofail) /* auto + fail */ - return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true); - else /* auto + nofail */ - return unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true); - } - - return 0; -} - static int mount_add_device_links(Mount *m) { MountParameters *p; int r; assert(m); - if (!(p = get_mount_parameters_configured(m))) + p = get_mount_parameters_fragment(m); + if (!p) return 0; if (!p->what) return 0; if (!mount_is_bind(p) && - !path_equal(m->where, "/") && - p == &m->parameters_etc_fstab) { - bool nofail, noauto; - - noauto = !!mount_test_option(p->options, "noauto"); - nofail = !!mount_test_option(p->options, "nofail"); - - if ((r = unit_add_node_link(UNIT(m), p->what, - !noauto && nofail && - UNIT(m)->manager->running_as == MANAGER_SYSTEM)) < 0) + !path_equal(m->where, "/")) { + r = unit_add_node_link(UNIT(m), p->what, false); + if (r < 0) return r; } if (p->passno > 0 && !mount_is_bind(p) && - UNIT(m)->manager->running_as == MANAGER_SYSTEM && - !path_equal(m->where, "/")) { + !path_equal(m->where, "/") && + UNIT(m)->manager->running_as == MANAGER_SYSTEM) { char *name; Unit *fsck; /* Let's add in the fsck service */ /* aka SPECIAL_FSCK_SERVICE */ - if (!(name = unit_name_from_path_instance("fsck", p->what, ".service"))) + name = unit_name_from_path_instance("fsck", p->what, ".service"); + if (!name) return -ENOMEM; - if ((r = manager_load_unit_prepare(UNIT(m)->manager, name, NULL, NULL, &fsck)) < 0) { + r = manager_load_unit_prepare(UNIT(m)->manager, name, NULL, NULL, &fsck); + if (r < 0) { log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); free(name); return r; } - free(name); SERVICE(fsck)->fsck_passno = p->passno; - if ((r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true)) < 0) + r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true); + if (r < 0) return r; } return 0; } +static int mount_add_quota_links(Mount *m) { + int r; + MountParameters *p; + + assert(m); + + if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) + return 0; + + p = get_mount_parameters_fragment(m); + if (!p) + return 0; + + if (!needs_quota(p)) + return 0; + + r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true); + if (r < 0) + return r; + + r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true); + if (r < 0) + return r; + + return 0; +} + static int mount_add_default_dependencies(Mount *m) { int r; MountParameters *p; + const char *after; assert(m); if (UNIT(m)->manager->running_as != MANAGER_SYSTEM) return 0; - p = get_mount_parameters_configured(m); - if (p && needs_quota(p)) { - if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true)) < 0 || - (r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true)) < 0) - return r; - } + p = get_mount_parameters_fragment(m); + if (!p) + return 0; - if (!path_equal(m->where, "/")) - if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0) - return r; + if (path_equal(m->where, "/")) + return 0; + + if (mount_is_network(p)) + after = SPECIAL_REMOTE_FS_PRE_TARGET; + else + after = SPECIAL_LOCAL_FS_PRE_TARGET; + + r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, after, NULL, true); + if (r < 0) + return r; + + r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); + if (r < 0) + return r; return 0; } @@ -494,7 +459,8 @@ static int mount_fix_timeouts(Mount *m) { assert(m); - if (!(p = get_mount_parameters_configured(m))) + p = get_mount_parameters_fragment(m); + if (!p) return 0; /* Allow configuration how long we wait for a device that @@ -504,7 +470,7 @@ static int mount_fix_timeouts(Mount *m) { if ((timeout = mount_test_option(p->options, "comment=systemd.device-timeout"))) timeout += 31; - else if ((timeout = mount_test_option(p->options, "x-systemd-device-timeout"))) + else if ((timeout = mount_test_option(p->options, "x-systemd.device-timeout"))) timeout += 25; else return 0; @@ -539,7 +505,7 @@ static int mount_verify(Mount *m) { if (UNIT(m)->load_state != UNIT_LOADED) return 0; - if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo) + if (!m->from_fragment && !m->from_proc_self_mountinfo) return -ENOENT; if (!(e = unit_name_from_path(m->where, ".mount"))) @@ -588,11 +554,6 @@ static int mount_load(Unit *u) { if (UNIT(m)->fragment_path) m->from_fragment = true; - else if (m->from_etc_fstab) - /* We always add several default dependencies to fstab mounts, - * but we do not want the implicit complementing of Wants= with After= - * in the target unit that this mount unit will be hooked into. */ - UNIT(m)->default_dependencies = false; if (!m->where) if (!(m->where = unit_name_to_path(u->id))) @@ -619,13 +580,18 @@ static int mount_load(Unit *u) { if ((r = mount_add_path_links(m)) < 0) return r; + r = mount_add_requires_mounts_links(m); + if (r < 0) + return r; + if ((r = mount_add_automount_links(m)) < 0) return r; - if ((r = mount_add_fstab_links(m)) < 0) + r = mount_add_quota_links(m); + if (r < 0) return r; - if (UNIT(m)->default_dependencies || m->from_etc_fstab) + if (UNIT(m)->default_dependencies) if ((r = mount_add_default_dependencies(m)) < 0) return r; @@ -760,7 +726,6 @@ static void mount_dump(Unit *u, FILE *f, const char *prefix) { "%sWhat: %s\n" "%sFile System Type: %s\n" "%sOptions: %s\n" - "%sFrom /etc/fstab: %s\n" "%sFrom /proc/self/mountinfo: %s\n" "%sFrom fragment: %s\n" "%sDirectoryMode: %04o\n", @@ -770,7 +735,6 @@ static void mount_dump(Unit *u, FILE *f, const char *prefix) { prefix, strna(p->what), prefix, strna(p->fstype), prefix, strna(p->options), - prefix, yes_no(m->from_etc_fstab), prefix, yes_no(m->from_proc_self_mountinfo), prefix, yes_no(m->from_fragment), prefix, m->directory_mode); @@ -805,6 +769,9 @@ static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { UNIT(m)->manager->confirm_spawn, UNIT(m)->cgroup_bondings, UNIT(m)->cgroup_attributes, + NULL, + UNIT(m)->id, + NULL, &pid)) < 0) goto fail; @@ -875,7 +842,8 @@ static void mount_enter_signal(Mount *m, MountState state, MountResult f) { if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) goto fail; - if ((r = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, sig, true, pid_set)) < 0) { + r = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, sig, true, false, pid_set, NULL); + if (r < 0) { if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) log_warning("Failed to kill control group: %s", strerror(-r)); } else if (r > 0) @@ -948,12 +916,12 @@ static void mount_enter_mounting(Mount *m) { m->control_command_id = MOUNT_EXEC_MOUNT; m->control_command = m->exec_command + MOUNT_EXEC_MOUNT; - mkdir_p(m->where, m->directory_mode); + mkdir_p_label(m->where, m->directory_mode); /* Create the source directory for bind-mounts if needed */ - p = get_mount_parameters_configured(m); + p = get_mount_parameters_fragment(m); if (p && mount_is_bind(p)) - mkdir_p(p->what, m->directory_mode); + mkdir_p_label(p->what, m->directory_mode); if (m->from_fragment) r = exec_command_set( @@ -964,12 +932,6 @@ static void mount_enter_mounting(Mount *m) { "-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto", m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options, NULL); - else if (m->from_etc_fstab) - r = exec_command_set( - m->control_command, - "/bin/mount", - m->where, - NULL); else r = -ENOENT; @@ -1028,14 +990,7 @@ static void mount_enter_remounting(Mount *m) { NULL); free(buf); - } else if (m->from_etc_fstab) - r = exec_command_set( - m->control_command, - "/bin/mount", - m->where, - "-o", "remount", - NULL); - else + } else r = -ENOENT; if (r < 0) @@ -1214,7 +1169,7 @@ static bool mount_check_gc(Unit *u) { assert(m); - return m->from_etc_fstab || m->from_proc_self_mountinfo; + return m->from_proc_self_mountinfo; } static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) { @@ -1398,7 +1353,6 @@ static int mount_add_one( const char *options, const char *fstype, int passno, - bool from_proc_self_mountinfo, bool set_flags) { int r; Unit *u; @@ -1412,8 +1366,6 @@ static int mount_add_one( assert(options); assert(fstype); - assert(!set_flags || from_proc_self_mountinfo); - /* Ignore API mount points. They should never be referenced in * dependencies ever. */ if (mount_point_is_api(where) || mount_point_ignore(where)) @@ -1465,21 +1417,15 @@ static int mount_add_one( goto fail; } - if (from_proc_self_mountinfo) { - p = &MOUNT(u)->parameters_proc_self_mountinfo; - - if (set_flags) { - MOUNT(u)->is_mounted = true; - MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; - MOUNT(u)->just_changed = !streq_ptr(p->options, o); - } - - MOUNT(u)->from_proc_self_mountinfo = true; - } else { - p = &MOUNT(u)->parameters_etc_fstab; - MOUNT(u)->from_etc_fstab = true; + p = &MOUNT(u)->parameters_proc_self_mountinfo; + if (set_flags) { + MOUNT(u)->is_mounted = true; + MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo; + MOUNT(u)->just_changed = !streq_ptr(p->options, o); } + MOUNT(u)->from_proc_self_mountinfo = true; + free(p->what); p->what = w; @@ -1506,89 +1452,6 @@ fail: return r; } -static int mount_find_pri(char *options) { - char *end, *pri; - unsigned long r; - - if (!(pri = mount_test_option(options, "pri"))) - return 0; - - pri += 4; - - errno = 0; - r = strtoul(pri, &end, 10); - - if (errno != 0) - return -errno; - - if (end == pri || (*end != ',' && *end != 0)) - return -EINVAL; - - return (int) r; -} - -static int mount_load_etc_fstab(Manager *m) { - FILE *f; - int r = 0; - struct mntent* me; - - assert(m); - - errno = 0; - if (!(f = setmntent("/etc/fstab", "r"))) - return -errno; - - while ((me = getmntent(f))) { - char *where, *what; - int k; - - if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) { - r = -ENOMEM; - goto finish; - } - - if (!(where = strdup(me->mnt_dir))) { - free(what); - r = -ENOMEM; - goto finish; - } - - if (what[0] == '/') - path_kill_slashes(what); - - if (where[0] == '/') - path_kill_slashes(where); - - if (streq(me->mnt_type, "swap")) { - int pri; - - if ((pri = mount_find_pri(me->mnt_opts)) < 0) - k = pri; - else - k = swap_add_one(m, - what, - NULL, - pri, - !!mount_test_option(me->mnt_opts, "noauto"), - !!mount_test_option(me->mnt_opts, "nofail"), - !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"), - false); - } else - k = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, me->mnt_passno, false, false); - - free(what); - free(where); - - if (k < 0) - r = k; - } - -finish: - - endmntent(f); - return r; -} - static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { int r = 0; unsigned i; @@ -1629,7 +1492,8 @@ static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { goto clean_up; } - if (asprintf(&o, "%s,%s", options, options2) < 0) { + o = join(options, ",", options2, NULL); + if (!o) { r = -ENOMEM; goto finish; } @@ -1640,7 +1504,7 @@ static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) { goto finish; } - if ((k = mount_add_one(m, d, p, o, fstype, 0, true, set_flags)) < 0) + if ((k = mount_add_one(m, d, p, o, fstype, 0, set_flags)) < 0) r = k; clean_up: @@ -1696,9 +1560,6 @@ static int mount_enumerate(Manager *m) { return -errno; } - if ((r = mount_load_etc_fstab(m)) < 0) - goto fail; - if ((r = mount_load_proc_self_mountinfo(m, false)) < 0) goto fail; @@ -1833,7 +1694,8 @@ static int mount_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError goto finish; } - if ((q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, pid_set)) < 0) + q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, false, pid_set, NULL); + if (q < 0) if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) r = q; } @@ -1892,7 +1754,6 @@ const UnitVTable mount_vtable = { .no_alias = true, .no_instances = true, - .show_status = true, .init = mount_init, .load = mount_load, @@ -1926,5 +1787,23 @@ const UnitVTable mount_vtable = { .bus_invalidating_properties = bus_mount_invalidating_properties, .enumerate = mount_enumerate, - .shutdown = mount_shutdown + .shutdown = mount_shutdown, + + .status_message_formats = { + .starting_stopping = { + [0] = "Mounting %s...", + [1] = "Unmounting %s...", + }, + .finished_start_job = { + [JOB_DONE] = "Mounted %s.", + [JOB_FAILED] = "Failed to mount %s.", + [JOB_DEPENDENCY] = "Dependency failed for %s.", + [JOB_TIMEOUT] = "Timed out mounting %s.", + }, + .finished_stop_job = { + [JOB_DONE] = "Unmounted %s.", + [JOB_FAILED] = "Failed unmounting %s.", + [JOB_TIMEOUT] = "Timed out unmounting %s.", + }, + }, };