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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libiberty/] [rename.c] - Blame information for rev 856

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Line No. Rev Author Line
1 274 jeremybenn
/* rename -- rename a file
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   This function is in the public domain. */
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/*
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@deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
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Renames a file from @var{old} to @var{new}.  If @var{new} already
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exists, it is removed.
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@end deftypefn
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*/
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#include "ansidecl.h"
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <errno.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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int
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rename (const char *zfrom, const char *zto)
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{
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  if (link (zfrom, zto) < 0)
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    {
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      if (errno != EEXIST)
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        return -1;
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      if (unlink (zto) < 0
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          || link (zfrom, zto) < 0)
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        return -1;
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    }
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  return unlink (zfrom);
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}

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