binutils-gdb/libiberty/rename.c

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1999-05-03 09:29:11 +02:00
/* rename -- rename a file
This function is in the public domain. */
2001-09-26 20:45:50 +02:00
/*
@deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
Renames a file from @var{old} to @var{new}. If @var{new} already
exists, it is removed.
@end deftypefn
*/
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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
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#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
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int
rename (zfrom, zto)
char *zfrom;
char *zto;
{
if (link (zfrom, zto) < 0)
{
if (errno != EEXIST)
return -1;
if (unlink (zto) < 0
|| link (zfrom, zto) < 0)
return -1;
}
return unlink (zfrom);
}