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stat-util: Add dir_is_empty_at

This commit is contained in:
Ryan Gonzalez 2019-01-07 12:27:38 -06:00
parent a75211421f
commit d7c1a15edf
2 changed files with 16 additions and 4 deletions
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15
src/basic/stat-util.c
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@ -67,13 +67,22 @@ int is_device_node(const char *path) {
return !!(S_ISBLK(info.st_mode) || S_ISCHR(info.st_mode));
}
int dir_is_empty(const char *path) {
_cleanup_closedir_ DIR *d;
int dir_is_empty_at(int dir_fd, const char *path) {
_cleanup_close_ int fd = -1;
_cleanup_closedir_ DIR *d = NULL;
struct dirent *de;
d = opendir(path);
if (path)
fd = openat(dir_fd, path, O_RDONLY|O_DIRECTORY|O_CLOEXEC);
else
fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
if (fd < 0)
return -errno;
d = fdopendir(fd);
if (!d)
return -errno;
fd = -1;
FOREACH_DIRENT(de, d, return -errno)
return 0;

5
src/basic/stat-util.h
View File

@ -15,7 +15,10 @@ int is_dir(const char *path, bool follow);
int is_dir_fd(int fd);
int is_device_node(const char *path);
int dir_is_empty(const char *path);
int dir_is_empty_at(int dir_fd, const char *path);
static inline int dir_is_empty(const char *path) {
return dir_is_empty_at(AT_FDCWD, path);
}
static inline int dir_is_populated(const char *path) {
int r;