freebsd-dev/contrib/binutils/libiberty/rename.c
David E. O'Brien da03bc7002 Import of Binutils from the FSF 2.15 branch (just post-.0 release).
These bits are taken from the FSF anoncvs repo on 23-May-2004 04:41:00 UTC.
2004-06-16 05:45:41 +00:00

39 lines
655 B
C

/* rename -- rename a file
This function is in the public domain. */
/*
@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
*/
#include "ansidecl.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
int
rename (zfrom, zto)
const char *zfrom;
const 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);
}