87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
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/* fstab-decode(8).
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Copyright (c) 2006 Red Hat, Inc. All rights reserved.
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This copyrighted material is made available to anyone wishing to use, modify,
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copy, or redistribute it subject to the terms and conditions of the GNU General
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Public License v.2.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Author: Miloslav Trmac <mitr@redhat.com> */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/* Decode the fstab-encoded string in place. */
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static void
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decode(char *s)
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{
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const char *src;
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char *dest;
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src = s;
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dest = s;
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while (*src != '\0') {
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if (*src != '\\')
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*dest = *src++;
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else {
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static const struct repl {
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char orig[4];
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size_t len;
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char new;
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} repls[] = {
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#define R(X, Y) { X, sizeof(X) - 1, Y }
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R("\\", '\\'),
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R("011", '\t'),
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R("012", '\n'),
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R("040", ' '),
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R("134", '\\')
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#undef R
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};
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size_t i;
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for (i = 0; i < sizeof (repls) / sizeof (repls[0]);
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i++) {
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if (memcmp(src + 1, repls[i].orig,
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repls[i].len) == 0) {
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*dest = repls[i].new;
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src += 1 + repls[i].len;
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goto found;
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}
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}
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*dest = *src++;
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found:
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;
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}
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dest++;
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}
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*dest = '\0';
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}
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int
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main (int argc, char *argv[])
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{
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size_t i;
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if (argc < 2) {
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fprintf(stderr, "Usage: fstab-decode command [arguments]\n");
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return EXIT_FAILURE;
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}
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for (i = 2; i < (size_t)argc; i++)
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decode(argv[i]);
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execvp(argv[1], argv + 1);
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fprintf(stderr, "fstab-decode: %s: %s\n", argv[1], strerror(errno));
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return 127;
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}
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