diff options
Diffstat (limited to 'fs/jffs2/jffs2_nand_private.h')
-rw-r--r-- | fs/jffs2/jffs2_nand_private.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/fs/jffs2/jffs2_nand_private.h b/fs/jffs2/jffs2_nand_private.h deleted file mode 100644 index 18cca8d076..0000000000 --- a/fs/jffs2/jffs2_nand_private.h +++ /dev/null @@ -1,133 +0,0 @@ -#ifndef jffs2_private_h -#define jffs2_private_h - -#include <jffs2/jffs2.h> - -struct b_node { - struct b_node *next; -}; - -struct b_inode { - struct b_inode *next; - u32 offset; /* physical offset to beginning of real inode */ - u32 version; - u32 ino; - u32 isize; - u32 csize; -}; - -struct b_dirent { - struct b_dirent *next; - u32 offset; /* physical offset to beginning of real dirent */ - u32 version; - u32 pino; - u32 ino; - unsigned int nhash; - unsigned char nsize; - unsigned char type; -}; - -struct b_list { - struct b_node *listTail; - struct b_node *listHead; - unsigned int listCount; - struct mem_block *listMemBase; -}; - -struct b_lists { - char *partOffset; - struct b_list dir; - struct b_list frag; -}; - -struct b_compr_info { - u32 num_frags; - u32 compr_sum; - u32 decompr_sum; -}; - -struct b_jffs2_info { - struct b_compr_info compr_info[JFFS2_NUM_COMPR]; -}; - -static inline int -hdr_crc(struct jffs2_unknown_node *node) -{ -#if 1 - u32 crc = crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4); -#else - /* what's the semantics of this? why is this here? */ - u32 crc = crc32_no_comp(~0, (unsigned char *)node, sizeof(struct jffs2_unknown_node) - 4); - - crc ^= ~0; -#endif - if (node->hdr_crc != crc) { - return 0; - } else { - return 1; - } -} - -static inline int -dirent_crc(struct jffs2_raw_dirent *node) -{ - if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_dirent) - 8)) { - return 0; - } else { - return 1; - } -} - -static inline int -dirent_name_crc(struct jffs2_raw_dirent *node) -{ - if (node->name_crc != crc32_no_comp(0, (unsigned char *)&(node->name), node->nsize)) { - return 0; - } else { - return 1; - } -} - -static inline int -inode_crc(struct jffs2_raw_inode *node) -{ - if (node->node_crc != crc32_no_comp(0, (unsigned char *)node, sizeof(struct jffs2_raw_inode) - 8)) { - return 0; - } else { - return 1; - } -} - -/* Borrowed from include/linux/dcache.h */ - -/* Name hashing routines. Initial hash value */ -/* Hash courtesy of the R5 hash in reiserfs modulo sign bits */ -#define init_name_hash() 0 - -/* partial hash update function. Assume roughly 4 bits per character */ -static inline unsigned long -partial_name_hash(unsigned long c, unsigned long prevhash) -{ - return (prevhash + (c << 4) + (c >> 4)) * 11; -} - -/* - * Finally: cut down the number of bits to a int value (and try to avoid - * losing bits) - */ -static inline unsigned long end_name_hash(unsigned long hash) -{ - return (unsigned int) hash; -} - -/* Compute the hash for a name string. */ -static inline unsigned int -full_name_hash(const unsigned char *name, unsigned int len) -{ - unsigned long hash = init_name_hash(); - while (len--) - hash = partial_name_hash(*name++, hash); - return end_name_hash(hash); -} - -#endif /* jffs2_private.h */ |