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util: introduce mkdir_parents() that creates parent paths of sockets and suchlike

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This commit is contained in:
Lennart Poettering 2010-02-12 02:01:14 +01:00
parent 82919e3d31
commit a9f5d45466
2 changed files with 37 additions and 0 deletions
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36
util.c
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@ -30,11 +30,14 @@
#include <sched.h>
#include <sys/resource.h>
#include <linux/sched.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "macro.h"
#include "util.h"
#include "ioprio.h"
#include "missing.h"
#include "log.h"
usec_t now(clockid_t clock_id) {
struct timespec ts;
@ -590,6 +593,39 @@ char *file_in_same_dir(const char *path, const char *filename) {
return r;
}
int mkdir_parents(const char *path, mode_t mode) {
const char *p, *e;
assert(path);
/* Creates every parent directory in the path except the last
* component. */
p = path + strspn(path, "/");
for (;;) {
int r;
char *t;
e = p + strcspn(p, "/");
p = e + strspn(e, "/");
/* Is this the last component? If so, then we're
* done */
if (*p == 0)
return 0;
if (!(t = strndup(path, e - path)))
return -ENOMEM;
r = mkdir(t, mode);
free(t);
if (r < 0 && errno != EEXIST)
return -errno;
}
}
char hexchar(int x) {
static const char table[16] = "0123456789abcdef";

1
util.h
View File

@ -127,6 +127,7 @@ int reset_all_signal_handlers(void);
char *strstrip(char *s);
char *file_in_same_dir(const char *path, const char *filename);
int mkdir_parents(const char *path, mode_t mode);
char hexchar(int x);
int unhexchar(char c);