freebsd-dev/gnu/libexec/uucp/libunix/rename.c

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1993-08-05 18:28:27 +00:00
/* rename.c
Rename a file to a new name (Unix specific implementation). */
#include "uucp.h"
#include "sysdep.h"
#include <errno.h>
/* This implementation will not work on directories, but fortunately
we never want to rename directories. */
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);
}