blob: aaac35ab59bdedd7091bc1c6d05232a54a00ab12 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/* See LICENSE for licence details. */
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdlib.h>
int main(int argc, char **argv){
size_t pathlen, argvlen;
char *path;
if(argc != 2){
fprintf(stderr, "Please supply one argument: the lock directory.\n");
return EXIT_FAILURE;
}
/* create lock */
if(mkdir(argv[1], S_IRUSR | S_IXUSR)){
if(errno && errno != EEXIST) {
fprintf(stderr, "Failed to create lock %s.\n", argv[1]);
return EXIT_FAILURE;
}
/* lock exists */
for(; mkdir(argv[1], S_IRUSR | S_IXUSR);){
sleep(1);
}
return EXIT_SUCCESS;
} else
return EXIT_SUCCESS;
}
}
|