X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fswap.c;h=346a5fd7121af758c973fd06e3b71fbbb8594f58;hb=a2c0e528b8b5ba370527db279605e4e4135689c1;hp=b2ca048bcbc0c23c3d476243b1e89e39dc3fb4b7;hpb=3018d31238caabc2e204aa161e647dc1c1b5d1c6;p=elogind.git

diff --git a/src/core/swap.c b/src/core/swap.c
index b2ca048bc..346a5fd71 100644
--- a/src/core/swap.c
+++ b/src/core/swap.c
@@ -152,8 +152,8 @@ static void swap_done(Unit *u) {
         free(s->parameters_fragment.what);
         s->parameters_fragment.what = NULL;
 
-        free(s->parameters_fragment.discard);
-        s->parameters_fragment.discard = NULL;
+        free(s->parameters_fragment.options);
+        s->parameters_fragment.options = NULL;
 
         s->exec_runtime = exec_runtime_unref(s->exec_runtime);
         exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX);
@@ -191,20 +191,16 @@ static int swap_arm_timer(Swap *s) {
 }
 
 static int swap_add_device_links(Swap *s) {
-        SwapParameters *p;
-
         assert(s);
 
         if (!s->what)
                 return 0;
 
-        if (s->from_fragment)
-                p = &s->parameters_fragment;
-        else
+        if (!s->from_fragment)
                 return 0;
 
         if (is_device_path(s->what))
-                return unit_add_node_link(UNIT(s), s->what, !p->noauto && UNIT(s)->manager->running_as == SYSTEMD_SYSTEM);
+                return unit_add_node_link(UNIT(s), s->what, UNIT(s)->manager->running_as == SYSTEMD_SYSTEM);
         else
                 /* File based swap devices need to be ordered after
                  * systemd-remount-fs.service, since they might need a
@@ -213,9 +209,6 @@ static int swap_add_device_links(Swap *s) {
 }
 
 static int swap_add_default_dependencies(Swap *s) {
-        bool nofail, noauto;
-        int r;
-
         assert(s);
 
         if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
@@ -224,29 +217,7 @@ static int swap_add_default_dependencies(Swap *s) {
         if (detect_container(NULL) > 0)
                 return 0;
 
-        r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);
-        if (r < 0)
-                return r;
-
-        if (!s->from_fragment)
-                /* The swap unit can either be for an alternative device name, in which
-                 * case we don't need to add the dependency on swap.target because this unit
-                 * is following a different unit which will have this dependency added,
-                 * or it can be derived from /proc/swaps, in which case it was started
-                 * manually, and should not become a dependency of swap.target. */
-                return 0;
-
-        nofail = s->parameters_fragment.nofail;
-        noauto = s->parameters_fragment.noauto;
-
-        if (!noauto) {
-                if (nofail)
-                        r = unit_add_dependency_by_name_inverse(UNIT(s), UNIT_WANTS, SPECIAL_SWAP_TARGET, NULL, true);
-                else
-                        r = unit_add_two_dependencies_by_name_inverse(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SWAP_TARGET, NULL, true);
-        }
-
-        return r < 0 ? r : 0;
+        return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);
 }
 
 static int swap_verify(Swap *s) {
@@ -262,12 +233,12 @@ static int swap_verify(Swap *s) {
 
         b = unit_has_name(UNIT(s), e);
         if (!b) {
-                log_error_unit(UNIT(s)->id, "%s: Value of \"What\" and unit name do not match, not loading.", UNIT(s)->id);
+                log_unit_error(UNIT(s)->id, "%s: Value of \"What\" and unit name do not match, not loading.", UNIT(s)->id);
                 return -EINVAL;
         }
 
         if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
-                log_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load.", UNIT(s)->id);
+                log_unit_error(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load.", UNIT(s)->id);
                 return -EINVAL;
         }
 
@@ -371,8 +342,6 @@ static int swap_add_one(
                 const char *what,
                 const char *what_proc_swaps,
                 int priority,
-                bool noauto,
-                bool nofail,
                 bool set_flags) {
 
         _cleanup_free_ char *e = NULL;
@@ -435,15 +404,13 @@ static int swap_add_one(
         SWAP(u)->from_proc_swaps = true;
 
         p->priority = priority;
-        p->noauto = noauto;
-        p->nofail = nofail;
 
         unit_add_to_dbus_queue(u);
 
         return 0;
 
 fail:
-        log_warning_unit(e, "Failed to load swap unit: %s", strerror(-r));
+        log_unit_warning_errno(e, r, "Failed to load swap unit: %m");
 
         if (delete && u)
                 unit_free(u);
@@ -460,7 +427,7 @@ static int swap_process_new_swap(Manager *m, const char *device, int prio, bool
 
         assert(m);
 
-        r = swap_add_one(m, device, device, prio, false, false, set_flags);
+        r = swap_add_one(m, device, device, prio, set_flags);
         if (r < 0)
                 return r;
 
@@ -476,7 +443,7 @@ static int swap_process_new_swap(Manager *m, const char *device, int prio, bool
         /* Add the main device node */
         dn = udev_device_get_devnode(d);
         if (dn && !streq(dn, device))
-                swap_add_one(m, dn, device, prio, false, false, set_flags);
+                swap_add_one(m, dn, device, prio, set_flags);
 
         /* Add additional units for all symlinks */
         first = udev_device_get_devlinks_list_entry(d);
@@ -497,7 +464,7 @@ static int swap_process_new_swap(Manager *m, const char *device, int prio, bool
                             st.st_rdev != udev_device_get_devnum(d))
                                 continue;
 
-                swap_add_one(m, p, device, prio, false, false, set_flags);
+                swap_add_one(m, p, device, prio, set_flags);
         }
 
         return r;
@@ -525,7 +492,7 @@ static void swap_set_state(Swap *s, SwapState state) {
         }
 
         if (state != old_state)
-                log_debug_unit(UNIT(s)->id,
+                log_unit_debug(UNIT(s)->id,
                                "%s changed %s -> %s",
                                UNIT(s)->id,
                                swap_state_to_string(old_state),
@@ -606,13 +573,9 @@ static void swap_dump(Unit *u, FILE *f, const char *prefix) {
         if (p)
                 fprintf(f,
                         "%sPriority: %i\n"
-                        "%sNoAuto: %s\n"
-                        "%sNoFail: %s\n"
-                        "%sDiscard: %s\n",
+                        "%sOptions: %s\n",
                         prefix, p->priority,
-                        prefix, yes_no(p->noauto),
-                        prefix, yes_no(p->nofail),
-                        prefix, p->discard ?: "none");
+                        prefix, strempty(p->options));
 
         if (s->control_pid > 0)
                 fprintf(f,
@@ -650,6 +613,7 @@ static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {
         exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
         exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported;
         exec_params.cgroup_path = UNIT(s)->cgroup_path;
+        exec_params.cgroup_delegate = s->cgroup_context.delegate;
         exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
         exec_params.unit_id = UNIT(s)->id;
 
@@ -710,7 +674,8 @@ static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) {
         r = unit_kill_context(
                         UNIT(s),
                         &s->kill_context,
-                        state != SWAP_ACTIVATING_SIGTERM && state != SWAP_DEACTIVATING_SIGTERM,
+                        (state != SWAP_ACTIVATING_SIGTERM && state != SWAP_DEACTIVATING_SIGTERM) ?
+                        KILL_KILL : KILL_TERMINATE,
                         -1,
                         s->control_pid,
                         false);
@@ -733,15 +698,80 @@ static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) {
         return;
 
 fail:
-        log_warning_unit(UNIT(s)->id,
+        log_unit_warning(UNIT(s)->id,
                          "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
 
         swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
 }
 
+static int mount_find_pri(const char *options, int *ret) {
+        const char *opt;
+        char *end;
+        unsigned long r;
+
+        assert(ret);
+
+        if (!options)
+                return 0;
+
+        opt = mount_test_option(options, "pri");
+        if (!opt)
+                return 0;
+
+        opt += strlen("pri");
+        if (*opt != '=')
+                return -EINVAL;
+
+        errno = 0;
+        r = strtoul(opt + 1, &end, 10);
+        if (errno > 0)
+                return -errno;
+
+        if (end == opt + 1 || (*end != ',' && *end != 0))
+                return -EINVAL;
+
+        *ret = (int) r;
+        return 1;
+}
+
+static int mount_find_discard(const char *options, char **ret) {
+        const char *opt;
+        char *ans;
+        size_t len;
+
+        assert(ret);
+
+        if (!options)
+                return 0;
+
+        opt = mount_test_option(options, "discard");
+        if (!opt)
+                return 0;
+
+        opt += strlen("discard");
+        if (*opt == ',' || *opt == '\0')
+                ans = strdup("all");
+        else {
+                if (*opt != '=')
+                        return -EINVAL;
+
+                len = strcspn(opt + 1, ",");
+                if (len == 0)
+                        return -EINVAL;
+
+                ans = strndup(opt + 1, len);
+        }
+
+        if (!ans)
+                return -ENOMEM;
+
+        *ret = ans;
+        return 1;
+}
+
 static void swap_enter_activating(Swap *s) {
-        int r, priority;
-        char *discard;
+        _cleanup_free_ char *discard = NULL;
+        int r, priority = -1;
 
         assert(s);
 
@@ -749,11 +779,11 @@ static void swap_enter_activating(Swap *s) {
         s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE;
 
         if (s->from_fragment) {
+                mount_find_discard(s->parameters_fragment.options, &discard);
+
                 priority = s->parameters_fragment.priority;
-                discard = s->parameters_fragment.discard;
-        } else {
-                priority = -1;
-                discard = NULL;
+                if (priority < 0)
+                        mount_find_pri(s->parameters_fragment.options, &priority);
         }
 
         r = exec_command_set(s->control_command, "/sbin/swapon", NULL);
@@ -770,9 +800,11 @@ static void swap_enter_activating(Swap *s) {
         }
 
         if (discard && !streq(discard, "none")) {
-                const char *discard_arg = "--discard";
+                const char *discard_arg;
 
-                if (!streq(discard, "all"))
+                if (streq(discard, "all"))
+                        discard_arg = "--discard";
+                else
                         discard_arg = strappenda("--discard=", discard);
 
                 r = exec_command_append(s->control_command, discard_arg, NULL);
@@ -795,7 +827,7 @@ static void swap_enter_activating(Swap *s) {
         return;
 
 fail:
-        log_warning_unit(UNIT(s)->id,
+        log_unit_warning(UNIT(s)->id,
                          "%s failed to run 'swapon' task: %s",
                          UNIT(s)->id, strerror(-r));
         swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
@@ -827,7 +859,7 @@ static void swap_enter_deactivating(Swap *s) {
         return;
 
 fail:
-        log_warning_unit(UNIT(s)->id,
+        log_unit_warning(UNIT(s)->id,
                          "%s failed to run 'swapoff' task: %s",
                          UNIT(s)->id, strerror(-r));
         swap_enter_active(s, SWAP_FAILURE_RESOURCES);
@@ -914,7 +946,7 @@ static int swap_deserialize_item(Unit *u, const char *key, const char *value, FD
 
                 state = swap_state_from_string(value);
                 if (state < 0)
-                        log_debug_unit(u->id, "Failed to parse state value %s", value);
+                        log_unit_debug(u->id, "Failed to parse state value %s", value);
                 else
                         s->deserialized_state = state;
         } else if (streq(key, "result")) {
@@ -922,14 +954,14 @@ static int swap_deserialize_item(Unit *u, const char *key, const char *value, FD
 
                 f = swap_result_from_string(value);
                 if (f < 0)
-                        log_debug_unit(u->id, "Failed to parse result value %s", value);
+                        log_unit_debug(u->id, "Failed to parse result value %s", value);
                 else if (f != SWAP_SUCCESS)
                         s->result = f;
         } else if (streq(key, "control-pid")) {
                 pid_t pid;
 
                 if (parse_pid(value, &pid) < 0)
-                        log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
+                        log_unit_debug(u->id, "Failed to parse control-pid value %s", value);
                 else
                         s->control_pid = pid;
 
@@ -938,13 +970,13 @@ static int swap_deserialize_item(Unit *u, const char *key, const char *value, FD
 
                 id = swap_exec_command_from_string(value);
                 if (id < 0)
-                        log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
+                        log_unit_debug(u->id, "Failed to parse exec-command value %s", value);
                 else {
                         s->control_command_id = id;
                         s->control_command = s->exec_command + id;
                 }
         } else
-                log_debug_unit(u->id, "Unknown serialization key '%s'", key);
+                log_unit_debug(u->id, "Unknown serialization key '%s'", key);
 
         return 0;
 }
@@ -1002,8 +1034,8 @@ static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
                 s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
         }
 
-        log_full_unit(f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
-                      u->id,
+        log_unit_full(u->id,
+                      f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
                       "%s swap process exited, code=%s status=%i",
                       u->id, sigchld_code_to_string(code), status);
 
@@ -1045,38 +1077,38 @@ static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userd
 
         case SWAP_ACTIVATING:
         case SWAP_ACTIVATING_DONE:
-                log_warning_unit(UNIT(s)->id, "%s activation timed out. Stopping.", UNIT(s)->id);
+                log_unit_warning(UNIT(s)->id, "%s activation timed out. Stopping.", UNIT(s)->id);
                 swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
                 break;
 
         case SWAP_DEACTIVATING:
-                log_warning_unit(UNIT(s)->id, "%s deactivation timed out. Stopping.", UNIT(s)->id);
+                log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Stopping.", UNIT(s)->id);
                 swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
                 break;
 
         case SWAP_ACTIVATING_SIGTERM:
                 if (s->kill_context.send_sigkill) {
-                        log_warning_unit(UNIT(s)->id, "%s activation timed out. Killing.", UNIT(s)->id);
+                        log_unit_warning(UNIT(s)->id, "%s activation timed out. Killing.", UNIT(s)->id);
                         swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
                 } else {
-                        log_warning_unit(UNIT(s)->id, "%s activation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
+                        log_unit_warning(UNIT(s)->id, "%s activation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
                         swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
                 }
                 break;
 
         case SWAP_DEACTIVATING_SIGTERM:
                 if (s->kill_context.send_sigkill) {
-                        log_warning_unit(UNIT(s)->id, "%s deactivation timed out. Killing.", UNIT(s)->id);
+                        log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Killing.", UNIT(s)->id);
                         swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
                 } else {
-                        log_warning_unit(UNIT(s)->id, "%s deactivation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
+                        log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
                         swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
                 }
                 break;
 
         case SWAP_ACTIVATING_SIGKILL:
         case SWAP_DEACTIVATING_SIGKILL:
-                log_warning_unit(UNIT(s)->id, "%s swap process still around after SIGKILL. Ignoring.", UNIT(s)->id);
+                log_unit_warning(UNIT(s)->id, "%s swap process still around after SIGKILL. Ignoring.", UNIT(s)->id);
                 swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
                 break;
 
@@ -1138,7 +1170,7 @@ static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, v
 
         r = swap_load_proc_swaps(m, true);
         if (r < 0) {
-                log_error("Failed to reread /proc/swaps: %s", strerror(-r));
+                log_error_errno(r, "Failed to reread /proc/swaps: %m");
 
                 /* Reset flags, just in case, for late calls */
                 LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) {