char *strappend(const char *s, const char *suffix);
char *strnappend(const char *s, const char *suffix, size_t length);
-char *replace_env(const char *format, char **env);
-char **replace_env_argv(char **argv, char **env);
-
int readlinkat_malloc(int fd, const char *p, char **ret);
int readlink_malloc(const char *p, char **r);
int readlink_value(const char *p, char **ret);
char* strshorten(char *s, size_t l);
+int symlink_idempotent(const char *from, const char *to);
int symlink_atomic(const char *from, const char *to);
int mknod_atomic(const char *path, mode_t mode, dev_t dev);
* Normal qsort requires base to be nonnull. Here were require
* that only if nmemb > 0.
*/
-static inline void qsort_safe(void *base, size_t nmemb, size_t size,
- int (*compar)(const void *, const void *)) {
- if (nmemb) {
- assert(base);
- qsort(base, nmemb, size, compar);
- }
+static inline void qsort_safe(void *base, size_t nmemb, size_t size, comparison_fn_t compar) {
+ if (nmemb <= 0)
+ return;
+
+ assert(base);
+ qsort(base, nmemb, size, compar);
+}
+
+/* Normal memmem() requires haystack to be nonnull, which is annoying for zero-length buffers */
+static inline void *memmem_safe(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen) {
+
+ if (needlelen <= 0)
+ return (void*) haystack;
+
+ if (haystacklen < needlelen)
+ return NULL;
+
+ assert(haystack);
+ assert(needle);
+
+ return memmem(haystack, haystacklen, needle, needlelen);
}
int proc_cmdline(char **ret);
int is_symlink(const char *path);
int is_dir(const char *path, bool follow);
+int is_device_node(const char *path);
typedef enum UnquoteFlags {
UNQUOTE_RELAX = 1,
int read_attr_fd(int fd, unsigned *ret);
int read_attr_path(const char *p, unsigned *ret);
-typedef struct LockFile {
- char *path;
- int fd;
- int operation;
-} LockFile;
-
-int make_lock_file(const char *p, int operation, LockFile *ret);
-int make_lock_file_for(const char *p, int operation, LockFile *ret);
-void release_lock_file(LockFile *f);
-
-#define _cleanup_release_lock_file_ _cleanup_(release_lock_file)
-
-#define LOCK_FILE_INIT { .fd = -1, .path = NULL }
-
#define RLIMIT_MAKE_CONST(lim) ((struct rlimit) { lim, lim })
ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length);