- add from fc

svn-id: @8947

diff --git a/src/fstab-decode.c b/src/fstab-decode.c
new file mode 100644 (file)
index 0000000..4a162df
--- /dev/null
+++ b/src/fstab-decode.c
@@ -0,0 +1,86 @@
+/* fstab-decode(8).
+
+Copyright (c) 2006 Red Hat, Inc. All rights reserved.
+
+This copyrighted material is made available to anyone wishing to use, modify,
+copy, or redistribute it subject to the terms and conditions of the GNU General
+Public License v.2.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+Author: Miloslav Trmac <mitr@redhat.com> */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Decode the fstab-encoded string in place. */
+static void
+decode(char *s)
+{
+       const char *src;
+       char *dest;
+
+       src = s;
+       dest = s;
+       while (*src != '\0') {
+               if (*src != '\\')
+                       *dest = *src++;
+               else {
+                       static const struct repl {
+                               char orig[4];
+                               size_t len;
+                               char new;
+                       } repls[] = {
+#define R(X, Y) { X, sizeof(X) - 1, Y }
+                               R("\\", '\\'),
+                               R("011", '\t'),
+                               R("012", '\n'),
+                               R("040", ' '),
+                               R("134", '\\')
+#undef R
+                       };
+
+                       size_t i;
+
+                       for (i = 0; i < sizeof (repls) / sizeof (repls[0]);
+                            i++) {
+                               if (memcmp(src + 1, repls[i].orig,
+                                          repls[i].len) == 0) {
+                                       *dest = repls[i].new;
+                                       src += 1 + repls[i].len;
+                                       goto found;
+                               }
+                       }
+                       *dest = *src++;
+               found:
+                       ;
+               }
+               dest++;
+       }
+       *dest = '\0';
+}
+
+int
+main (int argc, char *argv[])
+{
+       size_t i;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: fstab-decode command [arguments]\n");
+               return EXIT_FAILURE;
+       }
+       for (i = 2; i < (size_t)argc; i++)
+               decode(argv[i]);
+       execvp(argv[1], argv + 1);
+       fprintf(stderr, "fstab-decode: %s: %s\n", argv[1], strerror(errno));
+       return 127;
+}