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fs-util: add mknodat_atomic()

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This commit is contained in:
Lennart Poettering
2022-09-23 09:25:33 +02:00
parent 4f477796f3
commit 497ca785aa
2 changed files with 12 additions and 6 deletions
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src/basic/fs-util.c
+6 -5
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@@ -463,7 +463,7 @@ int symlinkat_atomic_full(const char *from, int atfd, const char *to, bool make_
return 0;
}
int mknod_atomic(const char *path, mode_t mode, dev_t dev) {
int mknodat_atomic(int atfd, const char *path, mode_t mode, dev_t dev) {
_cleanup_free_ char *t = NULL;
int r;
@@ -473,12 +473,13 @@ int mknod_atomic(const char *path, mode_t mode, dev_t dev) {
if (r < 0)
return r;
if (mknod(t, mode, dev) < 0)
if (mknodat(atfd, t, mode, dev) < 0)
return -errno;
if (rename(t, path) < 0) {
unlink_noerrno(t);
return -errno;
r = RET_NERRNO(renameat(atfd, t, atfd, path));
if (r < 0) {
(void) unlinkat(atfd, t, 0);
return r;
}
return 0;