mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-27 14:50:23 +00:00
37 lines
633 B
C
37 lines
633 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 (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);
|
||
|
|
}
|