76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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* rename - rename a file
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*/
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/* Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bash is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#include <config.h>
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#if !defined (HAVE_RENAME)
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#include <bashtypes.h>
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#include <posixstat.h>
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include <errno.h>
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#include <stdc.h>
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#ifndef errno
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extern int errno;
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#endif
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int
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rename (from, to)
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const char *from, *to;
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{
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struct stat fb, tb;
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if (stat (from, &fb) < 0)
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return -1;
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if (stat (to, &tb) < 0)
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{
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if (errno != ENOENT)
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return -1;
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}
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else
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{
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if (fb.st_dev == tb.st_dev && fb.st_ino == tb.st_ino)
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return 0; /* same file */
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if (unlink (to) < 0 && errno != ENOENT)
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return -1;
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}
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if (link (from, to) < 0)
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return (-1);
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if (unlink (from) < 0 && errno != ENOENT)
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{
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int e = errno;
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unlink (to);
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errno = e;
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return (-1);
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}
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return (0);
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}
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#endif /* !HAVE_RENAME */
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