Commit | Line | Data |
---|---|---|
1 | /* rename -- rename a file | |
2 | This function is in the public domain. */ | |
3 | ||
4 | /* Rename a file. */ | |
5 | ||
6 | #ifdef HAVE_CONFIG_H | |
7 | #include "config.h" | |
8 | #endif | |
9 | #include <errno.h> | |
10 | #ifdef HAVE_UNISTD_H | |
11 | #include <unistd.h> | |
12 | #endif | |
13 | ||
14 | int | |
15 | rename (zfrom, zto) | |
16 | char *zfrom; | |
17 | char *zto; | |
18 | { | |
19 | if (link (zfrom, zto) < 0) | |
20 | { | |
21 | if (errno != EEXIST) | |
22 | return -1; | |
23 | if (unlink (zto) < 0 | |
24 | || link (zfrom, zto) < 0) | |
25 | return -1; | |
26 | } | |
27 | return unlink (zfrom); | |
28 | } |