Mercurial > hg > CbC > CbC_gcc

comparison libiberty/rename.c @ 0:a06113de4d67

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
1 /* rename -- rename a file
2 This function is in the public domain. */
3
4 /*
5
6 @deftypefn Supplemental int rename (const char *@var{old}, const char *@var{new})
7
8 Renames a file from @var{old} to @var{new}. If @var{new} already
9 exists, it is removed.
10
11 @end deftypefn
12
13 */
14
15 #include "ansidecl.h"
16 #ifdef HAVE_CONFIG_H
17 #include "config.h"
18 #endif
19 #include <errno.h>
20 #ifdef HAVE_UNISTD_H
21 #include <unistd.h>
22 #endif
23
24 int
25 rename (const char *zfrom, const char *zto)
26 {
27 if (link (zfrom, zto) < 0)
28 {
29 if (errno != EEXIST)
30 return -1;
31 if (unlink (zto) < 0
32 || link (zfrom, zto) < 0)
33 return -1;
34 }
35 return unlink (zfrom);
36 }