Commit | Line | Data |
---|---|---|
d3372da9 | 1 | #include <stdlib.h> |
2 | #include <unistd.h> | |
3 | #include <fcntl.h> | |
4 | #include <stdio.h> | |
5 | #include <errno.h> | |
6 | ||
7 | int main(int argc, char **argv) | |
8 | { | |
9 | int fd; | |
10 | ||
11 | if(argc < 2) | |
12 | { | |
13 | fprintf(stderr, "usage: locktouch lockfile\n"); | |
14 | exit(1); | |
15 | } | |
16 | if((fd = open(argv[1], O_CREAT | O_EXCL, 0666)) < 0) | |
17 | { | |
18 | if(errno != EEXIST) | |
19 | { | |
20 | perror(argv[1]); | |
21 | exit(2); | |
22 | } | |
23 | exit(1); | |
24 | } | |
25 | close(fd); | |
26 | return(0); | |
27 | } |