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52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* rename.c -- BSD compatible directory function for System V
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Copyright (C) 1988, 1990, 1992 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it 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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public 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 this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#ifndef STDC_HEADERS
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extern int errno;
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#endif
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/* Rename file FROM to file TO.
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Return 0 if successful, -1 if not. */
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int
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rename (from, to)
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char *from;
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char *to;
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{
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struct stat from_stats;
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if (stat (from, &from_stats))
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return -1;
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if (unlink (to) && errno != ENOENT)
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return -1;
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if (link (from, to))
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return -1;
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if (unlink (from) && errno != ENOENT)
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{
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unlink (to);
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return -1;
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}
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return 0;
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}
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