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-rw-r--r--src/core/automount.c116
1 files changed, 64 insertions, 52 deletions
diff --git a/src/core/automount.c b/src/core/automount.c
index b1619a64e6..5b1f544f08 100644
--- a/src/core/automount.c
+++ b/src/core/automount.c
@@ -132,7 +132,8 @@ int automount_add_one_mount_link(Automount *a, Mount *m) {
if (path_equal(a->where, m->where))
return 0;
- if ((r = unit_add_two_dependencies(UNIT(a), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
+ r = unit_add_two_dependencies(UNIT(a), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true);
+ if (r < 0)
return r;
return 0;
@@ -144,9 +145,11 @@ static int automount_add_mount_links(Automount *a) {
assert(a);
- LIST_FOREACH(units_by_type, other, UNIT(a)->manager->units_by_type[UNIT_MOUNT])
- if ((r = automount_add_one_mount_link(a, MOUNT(other))) < 0)
+ LIST_FOREACH(units_by_type, other, UNIT(a)->manager->units_by_type[UNIT_MOUNT]) {
+ r = automount_add_one_mount_link(a, MOUNT(other));
+ if (r < 0)
return r;
+ }
return 0;
}
@@ -179,7 +182,8 @@ static int automount_verify(Automount *a) {
return -EINVAL;
}
- if (!(e = unit_name_from_path(a->where, ".automount")))
+ e = unit_name_from_path(a->where, ".automount");
+ if (!e)
return -ENOMEM;
b = unit_has_name(UNIT(a), e);
@@ -201,19 +205,23 @@ static int automount_load(Unit *u) {
assert(u->load_state == UNIT_STUB);
/* Load a .automount file */
- if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
+ r = unit_load_fragment_and_dropin_optional(u);
+ if (r < 0)
return r;
if (u->load_state == UNIT_LOADED) {
Unit *x;
- if (!a->where)
- if (!(a->where = unit_name_to_path(u->id)))
+ if (!a->where) {
+ a->where = unit_name_to_path(u->id);
+ if (!a->where)
return -ENOMEM;
+ }
path_kill_slashes(a->where);
- if ((r = automount_add_mount_links(a)) < 0)
+ r = automount_add_mount_links(a);
+ if (r < 0)
return r;
r = unit_load_related_unit(u, ".mount", &x);
@@ -226,9 +234,11 @@ static int automount_load(Unit *u) {
if (r < 0)
return r;
- if (UNIT(a)->default_dependencies)
- if ((r = automount_add_default_dependencies(a)) < 0)
+ if (UNIT(a)->default_dependencies) {
+ r = automount_add_default_dependencies(a);
+ if (r < 0)
return r;
+ }
}
return automount_verify(a);
@@ -263,7 +273,8 @@ static int automount_coldplug(Unit *u) {
if (a->deserialized_state != a->state) {
- if ((r = open_dev_autofs(u->manager)) < 0)
+ r = open_dev_autofs(u->manager);
+ if (r < 0)
return r;
if (a->deserialized_state == AUTOMOUNT_WAITING ||
@@ -271,7 +282,8 @@ static int automount_coldplug(Unit *u) {
assert(a->pipe_fd >= 0);
- if ((r = unit_watch_fd(UNIT(a), a->pipe_fd, EPOLLIN, &a->pipe_watch)) < 0)
+ r = unit_watch_fd(UNIT(a), a->pipe_fd, EPOLLIN, &a->pipe_watch);
+ if (r < 0)
return r;
}
@@ -316,7 +328,8 @@ static int open_dev_autofs(Manager *m) {
label_fix("/dev/autofs", false, false);
- if ((m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY)) < 0) {
+ m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY);
+ if (m->dev_autofs_fd < 0) {
log_error("Failed to open /dev/autofs: %s", strerror(errno));
return -errno;
}
@@ -336,15 +349,12 @@ static int open_dev_autofs(Manager *m) {
static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) {
struct autofs_dev_ioctl *param;
size_t l;
- int r;
assert(dev_autofs_fd >= 0);
assert(where);
l = sizeof(struct autofs_dev_ioctl) + strlen(where) + 1;
-
- if (!(param = malloc(l)))
- return -ENOMEM;
+ param = alloca(l);
init_autofs_dev_ioctl(param);
param->size = l;
@@ -352,22 +362,14 @@ static int open_ioctl_fd(int dev_autofs_fd, const char *where, dev_t devid) {
param->openmount.devid = devid;
strcpy(param->path, where);
- if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0) {
- r = -errno;
- goto finish;
- }
+ if (ioctl(dev_autofs_fd, AUTOFS_DEV_IOCTL_OPENMOUNT, param) < 0)
+ return -errno;
- if (param->ioctlfd < 0) {
- r = -EIO;
- goto finish;
- }
+ if (param->ioctlfd < 0)
+ return -EIO;
fd_cloexec(param->ioctlfd, true);
- r = param->ioctlfd;
-
-finish:
- free(param);
- return r;
+ return param->ioctlfd;
}
static int autofs_protocol(int dev_autofs_fd, int ioctl_fd) {
@@ -444,7 +446,8 @@ int automount_send_ready(Automount *a, int status) {
if (set_isempty(a->tokens))
return 0;
- if ((ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id)) < 0) {
+ ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id);
+ if (ioctl_fd < 0) {
r = ioctl_fd;
goto fail;
}
@@ -465,10 +468,11 @@ int automount_send_ready(Automount *a, int status) {
* if you pass a positive status code here, the kernel will
* freeze! Yay! */
- if ((k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd,
- ioctl_fd,
- token,
- status)) < 0)
+ k = autofs_send_ready(UNIT(a)->manager->dev_autofs_fd,
+ ioctl_fd,
+ token,
+ status);
+ if (k < 0)
r = k;
}
@@ -493,7 +497,8 @@ static void automount_enter_waiting(Automount *a) {
if (a->tokens)
set_clear(a->tokens);
- if ((dev_autofs_fd = open_dev_autofs(UNIT(a)->manager)) < 0) {
+ dev_autofs_fd = open_dev_autofs(UNIT(a)->manager);
+ if (dev_autofs_fd < 0) {
r = dev_autofs_fd;
goto fail;
}
@@ -530,15 +535,18 @@ static void automount_enter_waiting(Automount *a) {
goto fail;
}
- if ((ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev)) < 0) {
+ ioctl_fd = open_ioctl_fd(dev_autofs_fd, a->where, st.st_dev);
+ if (ioctl_fd < 0) {
r = ioctl_fd;
goto fail;
}
- if ((r = autofs_protocol(dev_autofs_fd, ioctl_fd)) < 0)
+ r = autofs_protocol(dev_autofs_fd, ioctl_fd);
+ if (r < 0)
goto fail;
- if ((r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, 300)) < 0)
+ r = autofs_set_timeout(dev_autofs_fd, ioctl_fd, 300);
+ if (r < 0)
goto fail;
/* Autofs fun fact:
@@ -550,7 +558,8 @@ static void automount_enter_waiting(Automount *a) {
close_nointr_nofail(ioctl_fd);
ioctl_fd = -1;
- if ((r = unit_watch_fd(UNIT(a), p[0], EPOLLIN, &a->pipe_watch)) < 0)
+ r = unit_watch_fd(UNIT(a), p[0], EPOLLIN, &a->pipe_watch);
+ if (r < 0)
goto fail;
a->pipe_fd = p[0];
@@ -618,7 +627,6 @@ static int automount_start(Unit *u) {
Automount *a = AUTOMOUNT(u);
assert(a);
-
assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED);
if (path_is_mount_point(a->where, false)) {
@@ -638,7 +646,6 @@ static int automount_stop(Unit *u) {
Automount *a = AUTOMOUNT(u);
assert(a);
-
assert(a->state == AUTOMOUNT_WAITING || a->state == AUTOMOUNT_RUNNING);
automount_enter_dead(a, AUTOMOUNT_SUCCESS);
@@ -664,7 +671,8 @@ static int automount_serialize(Unit *u, FILE *f, FDSet *fds) {
if (a->pipe_fd >= 0) {
int copy;
- if ((copy = fdset_put_dup(fds, a->pipe_fd)) < 0)
+ copy = fdset_put_dup(fds, a->pipe_fd);
+ if (copy < 0)
return copy;
unit_serialize_item_format(u, f, "pipe-fd", "%i", copy);
@@ -683,7 +691,8 @@ static int automount_deserialize_item(Unit *u, const char *key, const char *valu
if (streq(key, "state")) {
AutomountState state;
- if ((state = automount_state_from_string(value)) < 0)
+ state = automount_state_from_string(value);
+ if (state < 0)
log_debug("Failed to parse state value %s", value);
else
a->deserialized_state = state;
@@ -713,7 +722,8 @@ static int automount_deserialize_item(Unit *u, const char *key, const char *valu
if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func)))
return -ENOMEM;
- if ((r = set_put(a->tokens, UINT_TO_PTR(token))) < 0)
+ r = set_put(a->tokens, UINT_TO_PTR(token));
+ if (r < 0)
return r;
}
} else if (streq(key, "pipe-fd")) {
@@ -770,7 +780,8 @@ static void automount_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
goto fail;
}
- if ((l = loop_read(a->pipe_fd, &packet, sizeof(packet), true)) != sizeof(packet)) {
+ l = loop_read(a->pipe_fd, &packet, sizeof(packet), true);
+ if (l != sizeof(packet)) {
log_error("Invalid read from pipe: %s", l < 0 ? strerror(-l) : "short read");
goto fail;
}
@@ -790,13 +801,14 @@ static void automount_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
} else
log_debug("Got direct mount request on %s", a->where);
- if (!a->tokens)
- if (!(a->tokens = set_new(trivial_hash_func, trivial_compare_func))) {
- log_error("Failed to allocate token set.");
- goto fail;
- }
+ r = set_ensure_allocated(&a->tokens, trivial_hash_func, trivial_compare_func);
+ if (r < 0) {
+ log_error("Failed to allocate token set.");
+ goto fail;
+ }
- if ((r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token))) < 0) {
+ r = set_put(a->tokens, UINT_TO_PTR(packet.v5_packet.wait_queue_token));
+ if (r < 0) {
log_error("Failed to remember token: %s", strerror(-r));
goto fail;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 17:22:16 +0000