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Diffstat (limited to 'src/libsystemd/libsystemd-internal/sd-device/sd-device.c')
-rw-r--r--src/libsystemd/libsystemd-internal/sd-device/sd-device.c69
1 files changed, 40 insertions, 29 deletions
diff --git a/src/libsystemd/libsystemd-internal/sd-device/sd-device.c b/src/libsystemd/libsystemd-internal/sd-device/sd-device.c
index 895002499c..d21a67cd4c 100644
--- a/src/libsystemd/libsystemd-internal/sd-device/sd-device.c
+++ b/src/libsystemd/libsystemd-internal/sd-device/sd-device.c
@@ -136,7 +136,7 @@ int device_add_property_aux(sd_device *device, const char *_key, const char *_va
}
if (!db) {
- device->properties_generation ++;
+ device->properties_generation++;
device->properties_buf_outdated = true;
}
@@ -309,7 +309,7 @@ _public_ int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *s
if (name[len] == '/')
name[len] = '!';
- len ++;
+ len++;
}
syspath = strjoina("/sys/subsystem/", subsystem, "/devices/", name);
@@ -669,7 +669,7 @@ _public_ int sd_device_new_from_device_id(sd_device **ret, const char *id) {
return -EINVAL;
sysname[0] = '\0';
- sysname ++;
+ sysname++;
return sd_device_new_from_subsystem_sysname(ret, subsys, sysname);
}
@@ -971,7 +971,7 @@ static int device_set_sysname(sd_device *device) {
pos = strrchr(device->devpath, '/');
if (!pos)
return -EINVAL;
- pos ++;
+ pos++;
/* devpath is not a root directory */
if (*pos == '\0' || pos <= device->devpath)
@@ -986,7 +986,7 @@ static int device_set_sysname(sd_device *device) {
if (sysname[len] == '!')
sysname[len] = '/';
- len ++;
+ len++;
}
/* trailing number */
@@ -1066,7 +1066,7 @@ int device_add_tag(sd_device *device, const char *tag) {
if (r < 0)
return r;
- device->tags_generation ++;
+ device->tags_generation++;
device->property_tags_outdated = true;
return 0;
@@ -1086,7 +1086,7 @@ int device_add_devlink(sd_device *device, const char *devlink) {
if (r < 0)
return r;
- device->devlinks_generation ++;
+ device->devlinks_generation++;
device->property_devlinks_outdated = true;
return 0;
@@ -1212,19 +1212,19 @@ int device_get_id_filename(sd_device *device, const char **ret) {
if (major(devnum) > 0) {
assert(subsystem);
- /* use dev_t -- b259:131072, c254:0 */
+ /* use dev_t — b259:131072, c254:0 */
r = asprintf(&id, "%c%u:%u",
streq(subsystem, "block") ? 'b' : 'c',
major(devnum), minor(devnum));
if (r < 0)
return -ENOMEM;
} else if (ifindex > 0) {
- /* use netdev ifindex -- n3 */
+ /* use netdev ifindex — n3 */
r = asprintf(&id, "n%u", ifindex);
if (r < 0)
return -ENOMEM;
} else {
- /* use $subsys:$sysname -- pci:0000:00:1f.2
+ /* use $subsys:$sysname — pci:0000:00:1f.2
* sysname() has '!' translated, get it from devpath
*/
const char *sysname;
@@ -1397,7 +1397,7 @@ _public_ const char *sd_device_get_tag_first(sd_device *device) {
device->tags_iterator_generation = device->tags_generation;
device->tags_iterator = ITERATOR_FIRST;
- set_iterate(device->tags, &device->tags_iterator, &v);
+ (void) set_iterate(device->tags, &device->tags_iterator, &v);
return v;
}
@@ -1411,7 +1411,7 @@ _public_ const char *sd_device_get_tag_next(sd_device *device) {
if (device->tags_iterator_generation != device->tags_generation)
return NULL;
- set_iterate(device->tags, &device->tags_iterator, &v);
+ (void) set_iterate(device->tags, &device->tags_iterator, &v);
return v;
}
@@ -1425,7 +1425,7 @@ _public_ const char *sd_device_get_devlink_first(sd_device *device) {
device->devlinks_iterator_generation = device->devlinks_generation;
device->devlinks_iterator = ITERATOR_FIRST;
- set_iterate(device->devlinks, &device->devlinks_iterator, &v);
+ (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v);
return v;
}
@@ -1439,7 +1439,7 @@ _public_ const char *sd_device_get_devlink_next(sd_device *device) {
if (device->devlinks_iterator_generation != device->devlinks_generation)
return NULL;
- set_iterate(device->devlinks, &device->devlinks_iterator, &v);
+ (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v);
return v;
}
@@ -1457,15 +1457,20 @@ static int device_properties_prepare(sd_device *device) {
return r;
if (device->property_devlinks_outdated) {
- char *devlinks = NULL;
+ _cleanup_free_ char *devlinks = NULL;
+ size_t devlinks_allocated = 0, devlinks_len = 0;
const char *devlink;
- devlink = sd_device_get_devlink_first(device);
- if (devlink)
- devlinks = strdupa(devlink);
+ for (devlink = sd_device_get_devlink_first(device); devlink; devlink = sd_device_get_devlink_next(device)) {
+ char *e;
- while ((devlink = sd_device_get_devlink_next(device)))
- devlinks = strjoina(devlinks, " ", devlink);
+ if (!GREEDY_REALLOC(devlinks, devlinks_allocated, devlinks_len + strlen(devlink) + 2))
+ return -ENOMEM;
+ if (devlinks_len > 0)
+ stpcpy(devlinks + devlinks_len++, " ");
+ e = stpcpy(devlinks + devlinks_len, devlink);
+ devlinks_len = e - devlinks;
+ }
r = device_add_property_internal(device, "DEVLINKS", devlinks);
if (r < 0)
@@ -1475,17 +1480,23 @@ static int device_properties_prepare(sd_device *device) {
}
if (device->property_tags_outdated) {
- char *tags = NULL;
+ _cleanup_free_ char *tags = NULL;
+ size_t tags_allocated = 0, tags_len = 0;
const char *tag;
- tag = sd_device_get_tag_first(device);
- if (tag)
- tags = strjoina(":", tag);
+ if (!GREEDY_REALLOC(tags, tags_allocated, 2))
+ return -ENOMEM;
+ stpcpy(tags, ":");
+ tags_len++;
- while ((tag = sd_device_get_tag_next(device)))
- tags = strjoina(tags, ":", tag);
+ for (tag = sd_device_get_tag_first(device); tag; tag = sd_device_get_tag_next(device)) {
+ char *e;
- tags = strjoina(tags, ":");
+ if (!GREEDY_REALLOC(tags, tags_allocated, tags_len + strlen(tag) + 2))
+ return -ENOMEM;
+ e = stpcpy(stpcpy(tags + tags_len, tag), ":");
+ tags_len = e - tags;
+ }
r = device_add_property_internal(device, "TAGS", tags);
if (r < 0)
@@ -1606,7 +1617,7 @@ _public_ const char *sd_device_get_sysattr_first(sd_device *device) {
device->sysattrs_iterator = ITERATOR_FIRST;
- set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
+ (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
return v;
}
@@ -1618,7 +1629,7 @@ _public_ const char *sd_device_get_sysattr_next(sd_device *device) {
if (!device->sysattrs_read)
return NULL;
- set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
+ (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v);
return v;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-18 17:12:12 +0000