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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-05-24 06:07:42 -0400
committerLennart Poettering <lennart@poettering.net>2016-05-24 12:07:42 +0200
commit755700bbd4a67661f40e963faccf8cf1fef84f9a (patch)
treebe68e103ba3362ec7ea4a2d2b194c4433a20ee06 /src
parente77813ca9f4e0735fd0e3e2caae4d7d1ee436011 (diff)
Udevadm trivial cleanups (#3331)
* udevadm-info: use _cleanup_ * udevadm-info: propagate return value from export_devices() * sd-device: add comment and remove unnecessary braces
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd/sd-device/sd-device.c5
-rw-r--r--src/udev/udevadm-info.c62
2 files changed, 28 insertions, 39 deletions
diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index 2d7e482b46..5c9e00ed80 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -533,7 +533,7 @@ int device_read_uevent_file(sd_device *device) {
return r;
}
- for (i = 0; i < uevent_len; i++) {
+ for (i = 0; i < uevent_len; i++)
switch (state) {
case PRE_KEY:
if (!strchr(NEWLINE, uevent[i])) {
@@ -558,9 +558,9 @@ int device_read_uevent_file(sd_device *device) {
break;
case PRE_VALUE:
value = &uevent[i];
-
state = VALUE;
+ /* fall through to handle empty property */
case VALUE:
if (strchr(NEWLINE, uevent[i])) {
uevent[i] = '\0';
@@ -576,7 +576,6 @@ int device_read_uevent_file(sd_device *device) {
default:
assert_not_reached("invalid state when parsing uevent file");
}
- }
if (major) {
r = device_set_devnum(device, major, minor);
diff --git a/src/udev/udevadm-info.c b/src/udev/udevadm-info.c
index 7182668f23..66b51c1209 100644
--- a/src/udev/udevadm-info.c
+++ b/src/udev/udevadm-info.c
@@ -156,7 +156,7 @@ static int stat_device(const char *name, bool export, const char *prefix) {
struct stat statbuf;
if (stat(name, &statbuf) != 0)
- return -1;
+ return -errno;
if (export) {
if (prefix == NULL)
@@ -171,23 +171,22 @@ static int stat_device(const char *name, bool export, const char *prefix) {
}
static int export_devices(struct udev *udev) {
- struct udev_enumerate *udev_enumerate;
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *udev_enumerate;
struct udev_list_entry *list_entry;
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
- return -1;
+ return -ENOMEM;
+
udev_enumerate_scan_devices(udev_enumerate);
udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) {
- struct udev_device *device;
+ _cleanup_udev_device_unref_ struct udev_device *device;
device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry));
- if (device != NULL) {
+ if (device != NULL)
print_record(device);
- udev_device_unref(device);
- }
}
- udev_enumerate_unref(udev_enumerate);
+
return 0;
}
@@ -220,39 +219,29 @@ static void cleanup_dir(DIR *dir, mode_t mask, int depth) {
}
static void cleanup_db(struct udev *udev) {
- DIR *dir;
+ _cleanup_closedir_ DIR *dir1 = NULL, *dir2 = NULL, *dir3 = NULL, *dir4 = NULL, *dir5 = NULL;
- unlink("/run/udev/queue.bin");
+ (void) unlink("/run/udev/queue.bin");
- dir = opendir("/run/udev/data");
- if (dir != NULL) {
- cleanup_dir(dir, S_ISVTX, 1);
- closedir(dir);
- }
+ dir1 = opendir("/run/udev/data");
+ if (dir1 != NULL)
+ cleanup_dir(dir1, S_ISVTX, 1);
- dir = opendir("/run/udev/links");
- if (dir != NULL) {
- cleanup_dir(dir, 0, 2);
- closedir(dir);
- }
+ dir2 = opendir("/run/udev/links");
+ if (dir2 != NULL)
+ cleanup_dir(dir2, 0, 2);
- dir = opendir("/run/udev/tags");
- if (dir != NULL) {
- cleanup_dir(dir, 0, 2);
- closedir(dir);
- }
+ dir3 = opendir("/run/udev/tags");
+ if (dir3 != NULL)
+ cleanup_dir(dir3, 0, 2);
- dir = opendir("/run/udev/static_node-tags");
- if (dir != NULL) {
- cleanup_dir(dir, 0, 2);
- closedir(dir);
- }
+ dir4 = opendir("/run/udev/static_node-tags");
+ if (dir4 != NULL)
+ cleanup_dir(dir4, 0, 2);
- dir = opendir("/run/udev/watch");
- if (dir != NULL) {
- cleanup_dir(dir, 0, 1);
- closedir(dir);
- }
+ dir5 = opendir("/run/udev/watch");
+ if (dir5 != NULL)
+ cleanup_dir(dir5, 0, 1);
}
static void help(void) {
@@ -374,7 +363,8 @@ static int uinfo(struct udev *udev, int argc, char *argv[]) {
action = ACTION_ATTRIBUTE_WALK;
break;
case 'e':
- export_devices(udev);
+ if (export_devices(udev) < 0)
+ return 1;
return 0;
case 'c':
cleanup_db(udev);