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authorDenis Vlasenko2008-02-18 21:08:49 +0000
committerDenis Vlasenko2008-02-18 21:08:49 +0000
commitde7684a309ad20c1b889d048d741cb1dd52245f7 (patch)
treeefae3387e1978cdd128ff2a922b734d0e9d0180f /util-linux/volume_id/cramfs.c
parent27dd495b98a6135554b1d839fefe436ba3c6ca71 (diff)
downloadbusybox-de7684a309ad20c1b889d048d741cb1dd52245f7.zip
busybox-de7684a309ad20c1b889d048d741cb1dd52245f7.tar.gz
support for mount by label (not yet tested)
Also adds findfs applet. Closes bug 1143.
Diffstat (limited to 'util-linux/volume_id/cramfs.c')
-rw-r--r--util-linux/volume_id/cramfs.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/util-linux/volume_id/cramfs.c b/util-linux/volume_id/cramfs.c
new file mode 100644
index 0000000..fd6e875
--- /dev/null
+++ b/util-linux/volume_id/cramfs.c
@@ -0,0 +1,58 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "volume_id_internal.h"
+
+struct cramfs_super {
+ uint8_t magic[4];
+ uint32_t size;
+ uint32_t flags;
+ uint32_t future;
+ uint8_t signature[16];
+ struct cramfs_info {
+ uint32_t crc;
+ uint32_t edition;
+ uint32_t blocks;
+ uint32_t files;
+ } __attribute__((__packed__)) info;
+ uint8_t name[16];
+} __attribute__((__packed__));
+
+int volume_id_probe_cramfs(struct volume_id *id, uint64_t off)
+{
+ struct cramfs_super *cs;
+
+ dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+ cs = volume_id_get_buffer(id, off, 0x200);
+ if (cs == NULL)
+ return -1;
+
+ if (memcmp(cs->magic, "\x45\x3d\xcd\x28", 4) == 0) {
+ volume_id_set_label_raw(id, cs->name, 16);
+ volume_id_set_label_string(id, cs->name, 16);
+
+ volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+ id->type = "cramfs";
+ return 0;
+ }
+
+ return -1;
+}