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lock-util: Add make_lock_file_at()

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This commit is contained in:
Daan De Meyer
2023-03-21 15:19:33 +01:00
parent 2415a0c7aa
commit aea3ca3613
4 changed files with 60 additions and 6 deletions
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src/basic/lock-util.h
+8 -2
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@@ -1,17 +1,23 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <fcntl.h>
typedef struct LockFile {
int dir_fd;
char *path;
int fd;
int operation;
} LockFile;
int make_lock_file(const char *p, int operation, LockFile *ret);
int make_lock_file_at(int dir_fd, const char *p, int operation, LockFile *ret);
static inline int make_lock_file(const char *p, int operation, LockFile *ret) {
return make_lock_file_at(AT_FDCWD, p, operation, ret);
}
int make_lock_file_for(const char *p, int operation, LockFile *ret);
void release_lock_file(LockFile *f);
#define LOCK_FILE_INIT { .fd = -EBADF, .path = NULL }
#define LOCK_FILE_INIT { .dir_fd = -EBADF, .fd = -EBADF }
/* POSIX locks with the same interface as flock(). */
int posix_lock(int fd, int operation);