| Revision 18474,
621 bytes
checked in by ghudson, 21 years ago
(diff) |
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This commit was generated by cvs2svn to compensate for changes in r18473,
which included commits to RCS files with non-trunk default branches.
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| 1 | /* rename -- rename a file |
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| 2 | This function is in the public domain. */ |
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| 3 | |
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| 4 | /* |
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| 5 | |
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| 6 | @deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new}) |
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| 7 | |
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| 8 | Renames a file from @var{old} to @var{new}. If @var{new} already |
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| 9 | exists, it is removed. |
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| 10 | |
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| 11 | @end deftypefn |
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| 12 | |
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| 13 | */ |
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| 14 | |
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| 15 | #ifdef HAVE_CONFIG_H |
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| 16 | #include "config.h" |
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| 17 | #endif |
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| 18 | #include <errno.h> |
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| 19 | #ifdef HAVE_UNISTD_H |
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| 20 | #include <unistd.h> |
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| 21 | #endif |
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| 22 | |
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| 23 | int |
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| 24 | rename (zfrom, zto) |
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| 25 | char *zfrom; |
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| 26 | char *zto; |
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| 27 | { |
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| 28 | if (link (zfrom, zto) < 0) |
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| 29 | { |
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| 30 | if (errno != EEXIST) |
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| 31 | return -1; |
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| 32 | if (unlink (zto) < 0 |
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| 33 | || link (zfrom, zto) < 0) |
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| 34 | return -1; |
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| 35 | } |
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| 36 | return unlink (zfrom); |
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| 37 | } |
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