/* * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright © 2002-2003 Free Software Foundation, Inc. * Copyright © 2013 embedded brains GmbH * * Created by David Woodhouse * * Port to the RTEMS by embedded brains GmbH. * * For licensing information, see the file 'LICENCE' in this directory. * * $Id: os-ecos.h,v 1.24 2005/02/09 09:23:55 pavlov Exp $ * */ #ifndef __JFFS2_OS_RTEMS_H__ #define __JFFS2_OS_RTEMS_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define CONFIG_JFFS2_RTIME #define CONFIG_JFFS2_ZLIB struct _inode; struct super_block; static inline unsigned int full_name_hash(const void *salt, const unsigned char * name, size_t len) { uint32_t hash = 0; (void)salt; while (len--) { hash = (hash << 4) | (hash >> 28); hash ^= *(name++); } return hash; } /* NAND flash not currently supported on RTEMS */ #define jffs2_can_mark_obsolete(c) (1) #define JFFS2_INODE_INFO(i) (&(i)->jffs2_i) #define OFNI_EDONI_2SFFJ(f) ((struct _inode *) ( ((char *)f) - ((char *)(&((struct _inode *)NULL)->jffs2_i)) ) ) #define ITIME(sec) (sec) #define I_SEC(tv) (tv) #define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size) #define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode) #define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid) #define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid) #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime) #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime) #define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime) #define get_seconds() time(NULL) struct _inode { cyg_uint32 i_ino; int i_count; mode_t i_mode; nlink_t i_nlink; // Could we dispense with this? uid_t i_uid; gid_t i_gid; time_t i_atime; time_t i_mtime; time_t i_ctime; // union { unsigned short i_rdev; // For devices only struct _inode * i_parent; // For directories only off_t i_size; // For files only // }; struct super_block * i_sb; struct jffs2_full_dirent * i_fd; struct jffs2_inode_info jffs2_i; struct _inode * i_cache_prev; // We need doubly-linked? struct _inode * i_cache_next; }; #define JFFS2_SB_INFO(sb) (&(sb)->jffs2_sb) #define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->jffs2_sb)) ) ) struct super_block { struct jffs2_sb_info jffs2_sb; struct _inode * s_root; rtems_jffs2_flash_control *s_flash_control; rtems_jffs2_compressor_control *s_compressor_control; bool s_is_readonly; unsigned char s_gc_buffer[PAGE_CACHE_SIZE]; // Avoids malloc when user may be under memory pressure rtems_recursive_mutex s_mutex; char s_name_buf[JFFS2_MAX_NAME_LEN]; }; #define sleep_on_spinunlock(wq, sl) spin_unlock(sl) #define EBADFD 32767 static inline bool jffs2_is_readonly(struct jffs2_sb_info *c) { struct super_block *sb = OFNI_BS_2SFFJ(c); return sb->s_is_readonly; } static inline void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c) { const struct super_block *sb = OFNI_BS_2SFFJ(c); rtems_jffs2_flash_control *fc = sb->s_flash_control; if (fc->trigger_garbage_collection != NULL) { (*fc->trigger_garbage_collection)(fc); } } /* fs-rtems.c */ struct _inode *jffs2_new_inode (struct _inode *dir_i, int mode, struct jffs2_raw_inode *ri); struct _inode *jffs2_iget(struct super_block *sb, cyg_uint32 ino); void jffs2_iput(struct _inode * i); void jffs2_gc_release_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f); struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c, int inum, int nlink); unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c, struct jffs2_inode_info *f, unsigned long offset, unsigned long *priv); void jffs2_gc_release_page(struct jffs2_sb_info *c, unsigned char *pg, unsigned long *priv); /* Avoid polluting RTEMS namespace with names not starting in jffs2_ */ #define os_to_jffs2_mode(x) jffs2_from_os_mode(x) static inline uint32_t jffs2_from_os_mode(uint32_t osmode) { return osmode & (S_IFMT | S_IRWXU | S_IRWXG | S_IRWXO); } static inline uint32_t jffs2_to_os_mode (uint32_t jmode) { return jmode & (S_IFMT | S_IRWXU | S_IRWXG | S_IRWXO); } /* flashio.c */ int jffs2_flash_read(struct jffs2_sb_info *c, cyg_uint32 read_buffer_offset, const size_t size, size_t * return_size, unsigned char * write_buffer); int jffs2_flash_write(struct jffs2_sb_info *c, cyg_uint32 write_buffer_offset, const size_t size, size_t * return_size, unsigned char * read_buffer); int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct iovec *vecs, unsigned long count, loff_t to, size_t *retlen); int jffs2_flash_erase(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); // dir-rtems.c struct _inode *jffs2_lookup(struct _inode *dir_i, const unsigned char *name, size_t namelen); int jffs2_create(struct _inode *dir_i, const char *d_name, size_t d_namelen, int mode); int jffs2_mknod(struct _inode *dir_i, const unsigned char *d_name, size_t d_namelen, int mode, const unsigned char *data, size_t datalen); int jffs2_link (struct _inode *old_d_inode, struct _inode *dir_i, const unsigned char *d_name, size_t d_namelen); int jffs2_unlink(struct _inode *dir_i, struct _inode *d_inode, const unsigned char *d_name, size_t d_namelen); int jffs2_rmdir (struct _inode *dir_i, struct _inode *d_inode, const unsigned char *d_name, size_t d_namelen); int jffs2_rename (struct _inode *old_dir_i, struct _inode *d_inode, const unsigned char *old_d_name, size_t old_d_namelen, struct _inode *new_dir_i, const unsigned char *new_d_name, size_t new_d_namelen); /* erase.c */ static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c) { } #ifndef CONFIG_JFFS2_FS_WRITEBUFFER #define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) ) #define jffs2_can_mark_obsolete(c) (1) #define jffs2_is_writebuffered(c) (0) #define jffs2_cleanmarker_oob(c) (0) #define jffs2_write_nand_cleanmarker(c,jeb) (-EIO) #define jffs2_flush_wbuf_pad(c) (c=c) #define jffs2_flush_wbuf_gc(c, i) ({ (void)(c), (void) i, 0; }) #define jffs2_nand_read_failcnt(c,jeb) do { ; } while(0) #define jffs2_write_nand_badblock(c,jeb,p) (0) #define jffs2_flash_setup(c) (0) #define jffs2_nand_flash_cleanup(c) do {} while(0) #define jffs2_wbuf_dirty(c) (0) #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e) #define jffs2_wbuf_timeout NULL #define jffs2_wbuf_process NULL #define jffs2_nor_ecc(c) (0) #else #error no nand yet #endif #ifndef BUG_ON #define BUG_ON(x) do { if (unlikely(x)) BUG(); } while(0) #endif #define __init #endif /* __JFFS2_OS_RTEMS_H__ */