NetBSD/gnu/dist/toolchain/libiberty/rename.c

29 lines
447 B
C

/* rename -- rename a file
This function is in the public domain. */
/* Rename a file. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
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);
}