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Commit | Line | Data |
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6599da04 JM |
1 | /* rename -- rename a file |
2 | This function is in the public domain. */ | |
3 | ||
4 | /* Rename a file. */ | |
5 | ||
6 | #include <errno.h> | |
7 | ||
8 | int | |
9 | rename (zfrom, zto) | |
10 | char *zfrom; | |
11 | char *zto; | |
12 | { | |
13 | if (link (zfrom, zto) < 0) | |
14 | { | |
15 | if (errno != EEXIST) | |
16 | return -1; | |
17 | if (unlink (zto) < 0 | |
18 | || link (zfrom, zto) < 0) | |
19 | return -1; | |
20 | } | |
21 | return unlink (zfrom); | |
22 | } |