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Diffstat (limited to 'src/core/mount.c')
-rw-r--r--src/core/mount.c141
1 files changed, 77 insertions, 64 deletions
diff --git a/src/core/mount.c b/src/core/mount.c
index 0c15b99f94..99e7cedc45 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -59,6 +59,9 @@ static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
[MOUNT_FAILED] = UNIT_FAILED
};
+static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
+static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+
static char* mount_test_option(const char *haystack, const char *needle) {
struct mntent me = { .mnt_opts = (char*) haystack };
@@ -156,13 +159,32 @@ static void mount_init(Unit *u) {
* already trying to comply its last one. */
m->exec_context.same_pgrp = true;
- m->timer_watch.type = WATCH_INVALID;
-
m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
UNIT(m)->ignore_on_isolate = true;
}
+static int mount_arm_timer(Mount *m) {
+ int r;
+
+ assert(m);
+
+ if (m->timeout_usec <= 0) {
+ m->timer_event_source = sd_event_source_unref(m->timer_event_source);
+ return 0;
+ }
+
+ if (m->timer_event_source) {
+ r = sd_event_source_set_time(m->timer_event_source, now(CLOCK_MONOTONIC) + m->timeout_usec);
+ if (r < 0)
+ return r;
+
+ return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT);
+ }
+
+ return sd_event_add_monotonic(UNIT(m)->manager->event, now(CLOCK_MONOTONIC) + m->timeout_usec, 0, mount_dispatch_timer, m, &m->timer_event_source);
+}
+
static void mount_unwatch_control_pid(Mount *m) {
assert(m);
@@ -201,7 +223,7 @@ static void mount_done(Unit *u) {
mount_unwatch_control_pid(m);
- unit_unwatch_timer(u, &m->timer_watch);
+ m->timer_event_source = sd_event_source_unref(m->timer_event_source);
}
_pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) {
@@ -626,7 +648,7 @@ static void mount_set_state(Mount *m, MountState state) {
state != MOUNT_UNMOUNTING_SIGKILL &&
state != MOUNT_REMOUNTING_SIGTERM &&
state != MOUNT_REMOUNTING_SIGKILL) {
- unit_unwatch_timer(UNIT(m), &m->timer_watch);
+ m->timer_event_source = sd_event_source_unref(m->timer_event_source);
mount_unwatch_control_pid(m);
m->control_command = NULL;
m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
@@ -692,7 +714,7 @@ static int mount_coldplug(Unit *u) {
if (r < 0)
return r;
- r = unit_watch_timer(UNIT(m), CLOCK_MONOTONIC, true, m->timeout_usec, &m->timer_watch);
+ r = mount_arm_timer(m);
if (r < 0)
return r;
}
@@ -751,7 +773,7 @@ static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
unit_realize_cgroup(UNIT(m));
- r = unit_watch_timer(UNIT(m), CLOCK_MONOTONIC, true, m->timeout_usec, &m->timer_watch);
+ r = mount_arm_timer(m);
if (r < 0)
goto fail;
@@ -782,7 +804,7 @@ static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
return 0;
fail:
- unit_unwatch_timer(UNIT(m), &m->timer_watch);
+ m->timer_event_source = sd_event_source_unref(m->timer_event_source);
return r;
}
@@ -825,7 +847,7 @@ static void mount_enter_signal(Mount *m, MountState state, MountResult f) {
goto fail;
if (r > 0) {
- r = unit_watch_timer(UNIT(m), CLOCK_MONOTONIC, true, m->timeout_usec, &m->timer_watch);
+ r = mount_arm_timer(m);
if (r < 0)
goto fail;
@@ -959,17 +981,11 @@ static void mount_enter_remounting(Mount *m) {
m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
if (m->from_fragment) {
- char *buf = NULL;
const char *o;
- if (m->parameters_fragment.options) {
- if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
- r = -ENOMEM;
- goto fail;
- }
-
- o = buf;
- } else
+ if (m->parameters_fragment.options)
+ o = strappenda("remount,", m->parameters_fragment.options);
+ else
o = "remount";
r = exec_command_set(
@@ -980,8 +996,6 @@ static void mount_enter_remounting(Mount *m) {
"-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto",
"-o", o,
NULL);
-
- free(buf);
} else
r = -ENOENT;
@@ -990,7 +1004,8 @@ static void mount_enter_remounting(Mount *m) {
mount_unwatch_control_pid(m);
- if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
+ r = mount_spawn(m, m->control_command, &m->control_pid);
+ if (r < 0)
goto fail;
mount_set_state(m, MOUNT_REMOUNTING);
@@ -1279,44 +1294,43 @@ static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
unit_add_to_dbus_queue(u);
}
-static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
- Mount *m = MOUNT(u);
+static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
+ Mount *m = MOUNT(userdata);
assert(m);
- assert(elapsed == 1);
- assert(w == &m->timer_watch);
+ assert(m->timer_event_source == source);
switch (m->state) {
case MOUNT_MOUNTING:
case MOUNT_MOUNTING_DONE:
- log_warning_unit(u->id,
- "%s mounting timed out. Stopping.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s mounting timed out. Stopping.", UNIT(m)->id);
mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT);
break;
case MOUNT_REMOUNTING:
- log_warning_unit(u->id,
- "%s remounting timed out. Stopping.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s remounting timed out. Stopping.", UNIT(m)->id);
m->reload_result = MOUNT_FAILURE_TIMEOUT;
mount_enter_mounted(m, MOUNT_SUCCESS);
break;
case MOUNT_UNMOUNTING:
- log_warning_unit(u->id,
- "%s unmounting timed out. Stopping.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s unmounting timed out. Stopping.", UNIT(m)->id);
mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT);
break;
case MOUNT_MOUNTING_SIGTERM:
if (m->kill_context.send_sigkill) {
- log_warning_unit(u->id,
- "%s mounting timed out. Killing.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s mounting timed out. Killing.", UNIT(m)->id);
mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
- log_warning_unit(u->id,
+ log_warning_unit(UNIT(m)->id,
"%s mounting timed out. Skipping SIGKILL. Ignoring.",
- u->id);
+ UNIT(m)->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
@@ -1327,13 +1341,13 @@ static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
case MOUNT_REMOUNTING_SIGTERM:
if (m->kill_context.send_sigkill) {
- log_warning_unit(u->id,
- "%s remounting timed out. Killing.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s remounting timed out. Killing.", UNIT(m)->id);
mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
- log_warning_unit(u->id,
+ log_warning_unit(UNIT(m)->id,
"%s remounting timed out. Skipping SIGKILL. Ignoring.",
- u->id);
+ UNIT(m)->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
@@ -1344,13 +1358,13 @@ static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
case MOUNT_UNMOUNTING_SIGTERM:
if (m->kill_context.send_sigkill) {
- log_warning_unit(u->id,
- "%s unmounting timed out. Killing.", u->id);
+ log_warning_unit(UNIT(m)->id,
+ "%s unmounting timed out. Killing.", UNIT(m)->id);
mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
- log_warning_unit(u->id,
+ log_warning_unit(UNIT(m)->id,
"%s unmounting timed out. Skipping SIGKILL. Ignoring.",
- u->id);
+ UNIT(m)->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
@@ -1362,9 +1376,9 @@ static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
case MOUNT_MOUNTING_SIGKILL:
case MOUNT_REMOUNTING_SIGKILL:
case MOUNT_UNMOUNTING_SIGKILL:
- log_warning_unit(u->id,
+ log_warning_unit(UNIT(m)->id,
"%s mount process still around after SIGKILL. Ignoring.",
- u->id);
+ UNIT(m)->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
@@ -1375,6 +1389,8 @@ static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
default:
assert_not_reached("Timeout at wrong time.");
}
+
+ return 0;
}
static int mount_add_one(
@@ -1582,6 +1598,8 @@ static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
static void mount_shutdown(Manager *m) {
assert(m);
+ m->mount_event_source = sd_event_source_unref(m->mount_event_source);
+
if (m->proc_self_mountinfo) {
fclose(m->proc_self_mountinfo);
m->proc_self_mountinfo = NULL;
@@ -1593,20 +1611,13 @@ static int mount_enumerate(Manager *m) {
assert(m);
if (!m->proc_self_mountinfo) {
- struct epoll_event ev = {
- .events = EPOLLPRI,
- .data.ptr = &m->mount_watch,
- };
-
m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
if (!m->proc_self_mountinfo)
return -errno;
- m->mount_watch.type = WATCH_MOUNT;
- m->mount_watch.fd = fileno(m->proc_self_mountinfo);
-
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
- return -errno;
+ r = sd_event_add_io(m->event, fileno(m->proc_self_mountinfo), EPOLLPRI, mount_dispatch_io, m, &m->mount_event_source);
+ if (r < 0)
+ goto fail;
}
r = mount_load_proc_self_mountinfo(m, false);
@@ -1620,12 +1631,13 @@ fail:
return r;
}
-void mount_fd_event(Manager *m, int events) {
+static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
Unit *u;
int r;
assert(m);
- assert(events & EPOLLPRI);
+ assert(revents & EPOLLPRI);
/* The manager calls this for every fd event happening on the
* /proc/self/mountinfo file, which informs us about mounting
@@ -1642,7 +1654,7 @@ void mount_fd_event(Manager *m, int events) {
mount->is_mounted = mount->just_mounted = mount->just_changed = false;
}
- return;
+ return 0;
}
manager_dispatch_load_queue(m);
@@ -1696,6 +1708,8 @@ void mount_fd_event(Manager *m, int events) {
/* Reset the flags for later calls */
mount->is_mounted = mount->just_mounted = mount->just_changed = false;
}
+
+ return 0;
}
static void mount_reset_failed(Unit *u) {
@@ -1710,7 +1724,7 @@ static void mount_reset_failed(Unit *u) {
m->reload_result = MOUNT_SUCCESS;
}
-static int mount_kill(Unit *u, KillWho who, int signo, DBusError *error) {
+static int mount_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
return unit_kill_common(u, who, signo, -1, MOUNT(u)->control_pid, error);
}
@@ -1753,15 +1767,15 @@ DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult);
const UnitVTable mount_vtable = {
.object_size = sizeof(Mount),
+ .exec_context_offset = offsetof(Mount, exec_context),
+ .cgroup_context_offset = offsetof(Mount, cgroup_context),
+ .kill_context_offset = offsetof(Mount, kill_context),
.sections =
"Unit\0"
"Mount\0"
"Install\0",
-
.private_section = "Mount",
- .exec_context_offset = offsetof(Mount, exec_context),
- .cgroup_context_offset = offsetof(Mount, cgroup_context),
.no_alias = true,
.no_instances = true,
@@ -1789,13 +1803,12 @@ const UnitVTable mount_vtable = {
.check_gc = mount_check_gc,
.sigchld_event = mount_sigchld_event,
- .timer_event = mount_timer_event,
.reset_failed = mount_reset_failed,
.bus_interface = "org.freedesktop.systemd1.Mount",
- .bus_message_handler = bus_mount_message_handler,
- .bus_invalidating_properties = bus_mount_invalidating_properties,
+ .bus_vtable = bus_mount_vtable,
+ .bus_changing_properties = bus_mount_changing_properties,
.bus_set_property = bus_mount_set_property,
.bus_commit_properties = bus_mount_commit_properties,
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-03 15:41:35 +0000