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67991cf824
done by Evin Robertson (bug#1105) and work from Manuel to make usage messages occupy less space and simplify how usage messages are displayed.
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini readlink implementation for busybox
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*
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*
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* Copyright (C) 1999,2000,2001 by Lineo, inc.
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* Written by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
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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 of the License, or
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* (at your option) any later version.
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*
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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 GNU
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* General Public License for more details.
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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "busybox.h"
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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int readlink_main(int argc, char **argv)
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{
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char *buf = NULL;
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int bufsize = 128, size = 128;
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if (argc != 2)
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show_usage();
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while (bufsize < size + 1) {
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bufsize *= 2;
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buf = xrealloc(buf, bufsize);
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size = readlink(argv[1], buf, bufsize);
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if (size == -1)
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perror_msg_and_die("%s", argv[1]);
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}
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buf[size] = '\0';
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puts(buf);
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return EXIT_SUCCESS;
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}
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