summaryrefslogtreecommitdiff
path: root/util-linux/minix.h
diff options
context:
space:
mode:
authorDenis Vlasenko2007-01-03 00:47:47 +0000
committerDenis Vlasenko2007-01-03 00:47:47 +0000
commit87033fb5fadc000c3b1ce7c46a813ad0479f62fc (patch)
tree64c58a55d4b4bc416d4428fd63983934f6f4dfc2 /util-linux/minix.h
parent73464ce53d0f83f7661d03ec831a538fb9229507 (diff)
downloadbusybox-87033fb5fadc000c3b1ce7c46a813ad0479f62fc.zip
busybox-87033fb5fadc000c3b1ce7c46a813ad0479f62fc.tar.gz
forgot to svn add util-linux/minix.h :(
Diffstat (limited to 'util-linux/minix.h')
-rw-r--r--util-linux/minix.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/util-linux/minix.h b/util-linux/minix.h
new file mode 100644
index 0000000..476f327
--- /dev/null
+++ b/util-linux/minix.h
@@ -0,0 +1,76 @@
+/*
+ * This is the original minix inode layout on disk.
+ * Note the 8-bit gid and atime and ctime.
+ */
+struct minix1_inode {
+ uint16_t i_mode;
+ uint16_t i_uid;
+ uint32_t i_size;
+ uint32_t i_time;
+ uint8_t i_gid;
+ uint8_t i_nlinks;
+ uint16_t i_zone[9];
+};
+
+/*
+ * The new minix inode has all the time entries, as well as
+ * long block numbers and a third indirect block (7+1+1+1
+ * instead of 7+1+1). Also, some previously 8-bit values are
+ * now 16-bit. The inode is now 64 bytes instead of 32.
+ */
+struct minix2_inode {
+ uint16_t i_mode;
+ uint16_t i_nlinks;
+ uint16_t i_uid;
+ uint16_t i_gid;
+ uint32_t i_size;
+ uint32_t i_atime;
+ uint32_t i_mtime;
+ uint32_t i_ctime;
+ uint32_t i_zone[10];
+};
+
+/*
+ * minix super-block data on disk
+ */
+struct minix_super_block {
+ uint16_t s_ninodes;
+ uint16_t s_nzones;
+ uint16_t s_imap_blocks;
+ uint16_t s_zmap_blocks;
+ uint16_t s_firstdatazone;
+ uint16_t s_log_zone_size;
+ uint32_t s_max_size;
+ uint16_t s_magic;
+ uint16_t s_state;
+ uint32_t s_zones;
+};
+
+struct minix_dir_entry {
+ uint16_t inode;
+ char name[0];
+};
+
+/* Believe it or not, but mount.h has this one #defined */
+#undef BLOCK_SIZE
+
+enum {
+ BLOCK_SIZE = 1024,
+ BITS_PER_BLOCK = BLOCK_SIZE << 3,
+
+ MINIX_ROOT_INO = 1,
+ MINIX_BAD_INO = 2,
+
+ MINIX1_SUPER_MAGIC = 0x137F, /* original minix fs */
+ MINIX1_SUPER_MAGIC2 = 0x138F, /* minix fs, 30 char names */
+ MINIX2_SUPER_MAGIC = 0x2468, /* minix V2 fs */
+ MINIX2_SUPER_MAGIC2 = 0x2478, /* minix V2 fs, 30 char names */
+ MINIX_VALID_FS = 0x0001, /* clean fs */
+ MINIX_ERROR_FS = 0x0002, /* fs has errors */
+
+ INODE_SIZE1 = sizeof(struct minix1_inode),
+ INODE_SIZE2 = sizeof(struct minix2_inode),
+ MINIX1_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix1_inode),
+ MINIX2_INODES_PER_BLOCK = BLOCK_SIZE / sizeof(struct minix2_inode),
+};
+