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Linux/fs/jffs2/os-linux.h

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Diff markup

Differences between /fs/jffs2/os-linux.h (Version linux-4.6.7) and /fs/jffs2/os-linux.h (Version linux-4.16.18)


  1 /*                                                  1 /*
  2  * JFFS2 -- Journalling Flash File System, Ver      2  * JFFS2 -- Journalling Flash File System, Version 2.
  3  *                                                  3  *
  4  * Copyright © 2001-2007 Red Hat, Inc.             4  * Copyright © 2001-2007 Red Hat, Inc.
  5  *                                                  5  *
  6  * Created by David Woodhouse <dwmw2@infradead      6  * Created by David Woodhouse <dwmw2@infradead.org>
  7  *                                                  7  *
  8  * For licensing information, see the file 'LI      8  * For licensing information, see the file 'LICENCE' in this directory.
  9  *                                                  9  *
 10  */                                                10  */
 11                                                    11 
 12 #ifndef __JFFS2_OS_LINUX_H__                       12 #ifndef __JFFS2_OS_LINUX_H__
 13 #define __JFFS2_OS_LINUX_H__                       13 #define __JFFS2_OS_LINUX_H__
 14                                                    14 
 15 /* JFFS2 uses Linux mode bits natively -- no n     15 /* JFFS2 uses Linux mode bits natively -- no need for conversion */
 16 #define os_to_jffs2_mode(x) (x)                    16 #define os_to_jffs2_mode(x) (x)
 17 #define jffs2_to_os_mode(x) (x)                    17 #define jffs2_to_os_mode(x) (x)
 18                                                    18 
 19 struct kstatfs;                                    19 struct kstatfs;
 20 struct kvec;                                       20 struct kvec;
 21                                                    21 
 22 #define JFFS2_INODE_INFO(i) (container_of(i, s     22 #define JFFS2_INODE_INFO(i) (container_of(i, struct jffs2_inode_info, vfs_inode))
 23 #define OFNI_EDONI_2SFFJ(f)  (&(f)->vfs_inode)     23 #define OFNI_EDONI_2SFFJ(f)  (&(f)->vfs_inode)
 24 #define JFFS2_SB_INFO(sb) (sb->s_fs_info)          24 #define JFFS2_SB_INFO(sb) (sb->s_fs_info)
 25 #define OFNI_BS_2SFFJ(c)  ((struct super_block     25 #define OFNI_BS_2SFFJ(c)  ((struct super_block *)c->os_priv)
 26                                                    26 
 27                                                    27 
 28 #define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)     28 #define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size)
 29 #define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)     29 #define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
 30 #define JFFS2_F_I_UID(f) (i_uid_read(OFNI_EDON     30 #define JFFS2_F_I_UID(f) (i_uid_read(OFNI_EDONI_2SFFJ(f)))
 31 #define JFFS2_F_I_GID(f) (i_gid_read(OFNI_EDON     31 #define JFFS2_F_I_GID(f) (i_gid_read(OFNI_EDONI_2SFFJ(f)))
 32 #define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)     32 #define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
 33                                                    33 
 34 #define ITIME(sec) ((struct timespec){sec, 0})     34 #define ITIME(sec) ((struct timespec){sec, 0})
 35 #define I_SEC(tv) ((tv).tv_sec)                    35 #define I_SEC(tv) ((tv).tv_sec)
 36 #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f     36 #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
 37 #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f     37 #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
 38 #define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f     38 #define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
 39                                                    39 
 40 #define sleep_on_spinunlock(wq, s)                 40 #define sleep_on_spinunlock(wq, s)                              \
 41         do {                                       41         do {                                                    \
 42                 DECLARE_WAITQUEUE(__wait, curr     42                 DECLARE_WAITQUEUE(__wait, current);             \
 43                 add_wait_queue((wq), &__wait);     43                 add_wait_queue((wq), &__wait);                  \
 44                 set_current_state(TASK_UNINTER     44                 set_current_state(TASK_UNINTERRUPTIBLE);        \
 45                 spin_unlock(s);                    45                 spin_unlock(s);                                 \
 46                 schedule();                        46                 schedule();                                     \
 47                 remove_wait_queue((wq), &__wai     47                 remove_wait_queue((wq), &__wait);               \
 48         } while(0)                                 48         } while(0)
 49                                                    49 
 50 static inline void jffs2_init_inode_info(struc     50 static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
 51 {                                                  51 {
 52         f->highest_version = 0;                    52         f->highest_version = 0;
 53         f->fragtree = RB_ROOT;                     53         f->fragtree = RB_ROOT;
 54         f->metadata = NULL;                        54         f->metadata = NULL;
 55         f->dents = NULL;                           55         f->dents = NULL;
 56         f->target = NULL;                          56         f->target = NULL;
 57         f->flags = 0;                              57         f->flags = 0;
 58         f->usercompr = 0;                          58         f->usercompr = 0;
 59 }                                                  59 }
 60                                                    60 
 61                                                    61 
 62 #define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c) !!  62 #define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & SB_RDONLY)
 63                                                    63 
 64 #define SECTOR_ADDR(x) ( (((unsigned long)(x)      64 #define SECTOR_ADDR(x) ( (((unsigned long)(x) / c->sector_size) * c->sector_size) )
 65 #ifndef CONFIG_JFFS2_FS_WRITEBUFFER                65 #ifndef CONFIG_JFFS2_FS_WRITEBUFFER
 66                                                    66 
 67                                                    67 
 68 #ifdef CONFIG_JFFS2_SUMMARY                        68 #ifdef CONFIG_JFFS2_SUMMARY
 69 #define jffs2_can_mark_obsolete(c) (0)             69 #define jffs2_can_mark_obsolete(c) (0)
 70 #else                                              70 #else
 71 #define jffs2_can_mark_obsolete(c) (1)             71 #define jffs2_can_mark_obsolete(c) (1)
 72 #endif                                             72 #endif
 73                                                    73 
 74 #define jffs2_is_writebuffered(c) (0)              74 #define jffs2_is_writebuffered(c) (0)
 75 #define jffs2_cleanmarker_oob(c) (0)               75 #define jffs2_cleanmarker_oob(c) (0)
 76 #define jffs2_write_nand_cleanmarker(c,jeb) (-     76 #define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
 77                                                    77 
 78 #define jffs2_flash_write(c, ofs, len, retlen,     78 #define jffs2_flash_write(c, ofs, len, retlen, buf) jffs2_flash_direct_write(c, ofs, len, retlen, buf)
 79 #define jffs2_flash_read(c, ofs, len, retlen,      79 #define jffs2_flash_read(c, ofs, len, retlen, buf) (mtd_read((c)->mtd, ofs, len, retlen, buf))
 80 #define jffs2_flush_wbuf_pad(c) ({ do{} while(     80 #define jffs2_flush_wbuf_pad(c) ({ do{} while(0); (void)(c), 0; })
 81 #define jffs2_flush_wbuf_gc(c, i) ({ do{} whil     81 #define jffs2_flush_wbuf_gc(c, i) ({ do{} while(0); (void)(c), (void) i, 0; })
 82 #define jffs2_write_nand_badblock(c,jeb,bad_of     82 #define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
 83 #define jffs2_nand_flash_setup(c) (0)              83 #define jffs2_nand_flash_setup(c) (0)
 84 #define jffs2_nand_flash_cleanup(c) do {} whil     84 #define jffs2_nand_flash_cleanup(c) do {} while(0)
 85 #define jffs2_wbuf_dirty(c) (0)                    85 #define jffs2_wbuf_dirty(c) (0)
 86 #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_     86 #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
 87 #define jffs2_wbuf_timeout NULL                    87 #define jffs2_wbuf_timeout NULL
 88 #define jffs2_wbuf_process NULL                    88 #define jffs2_wbuf_process NULL
 89 #define jffs2_dataflash(c) (0)                     89 #define jffs2_dataflash(c) (0)
 90 #define jffs2_dataflash_setup(c) (0)               90 #define jffs2_dataflash_setup(c) (0)
 91 #define jffs2_dataflash_cleanup(c) do {} while     91 #define jffs2_dataflash_cleanup(c) do {} while (0)
 92 #define jffs2_nor_wbuf_flash(c) (0)                92 #define jffs2_nor_wbuf_flash(c) (0)
 93 #define jffs2_nor_wbuf_flash_setup(c) (0)          93 #define jffs2_nor_wbuf_flash_setup(c) (0)
 94 #define jffs2_nor_wbuf_flash_cleanup(c) do {}      94 #define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
 95 #define jffs2_ubivol(c) (0)                        95 #define jffs2_ubivol(c) (0)
 96 #define jffs2_ubivol_setup(c) (0)                  96 #define jffs2_ubivol_setup(c) (0)
 97 #define jffs2_ubivol_cleanup(c) do {} while (0     97 #define jffs2_ubivol_cleanup(c) do {} while (0)
 98 #define jffs2_dirty_trigger(c) do {} while (0)     98 #define jffs2_dirty_trigger(c) do {} while (0)
 99                                                    99 
100 #else /* NAND and/or ECC'd NOR support present    100 #else /* NAND and/or ECC'd NOR support present */
101                                                   101 
102 #define jffs2_is_writebuffered(c) (c->wbuf !=     102 #define jffs2_is_writebuffered(c) (c->wbuf != NULL)
103                                                   103 
104 #ifdef CONFIG_JFFS2_SUMMARY                       104 #ifdef CONFIG_JFFS2_SUMMARY
105 #define jffs2_can_mark_obsolete(c) (0)            105 #define jffs2_can_mark_obsolete(c) (0)
106 #else                                             106 #else
107 #define jffs2_can_mark_obsolete(c) (c->mtd->fl    107 #define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
108 #endif                                            108 #endif
109                                                   109 
110 #define jffs2_cleanmarker_oob(c) (c->mtd->type    110 #define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
111                                                   111 
112 #define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)     112 #define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
113                                                   113 
114 /* wbuf.c */                                      114 /* wbuf.c */
115 int jffs2_flash_writev(struct jffs2_sb_info *c    115 int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
116 int jffs2_flash_write(struct jffs2_sb_info *c,    116 int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
117 int jffs2_flash_read(struct jffs2_sb_info *c,     117 int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
118 int jffs2_check_oob_empty(struct jffs2_sb_info    118 int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
119 int jffs2_check_nand_cleanmarker(struct jffs2_    119 int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
120 int jffs2_write_nand_cleanmarker(struct jffs2_    120 int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
121 int jffs2_write_nand_badblock(struct jffs2_sb_    121 int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
122 void jffs2_wbuf_timeout(unsigned long data);      122 void jffs2_wbuf_timeout(unsigned long data);
123 void jffs2_wbuf_process(void *data);              123 void jffs2_wbuf_process(void *data);
124 int jffs2_flush_wbuf_gc(struct jffs2_sb_info *    124 int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
125 int jffs2_flush_wbuf_pad(struct jffs2_sb_info     125 int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
126 int jffs2_nand_flash_setup(struct jffs2_sb_inf    126 int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
127 void jffs2_nand_flash_cleanup(struct jffs2_sb_    127 void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
128                                                   128 
129 #define jffs2_dataflash(c) (c->mtd->type == MT    129 #define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
130 int jffs2_dataflash_setup(struct jffs2_sb_info    130 int jffs2_dataflash_setup(struct jffs2_sb_info *c);
131 void jffs2_dataflash_cleanup(struct jffs2_sb_i    131 void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
132 #define jffs2_ubivol(c) (c->mtd->type == MTD_U    132 #define jffs2_ubivol(c) (c->mtd->type == MTD_UBIVOLUME)
133 int jffs2_ubivol_setup(struct jffs2_sb_info *c    133 int jffs2_ubivol_setup(struct jffs2_sb_info *c);
134 void jffs2_ubivol_cleanup(struct jffs2_sb_info    134 void jffs2_ubivol_cleanup(struct jffs2_sb_info *c);
135                                                   135 
136 #define jffs2_nor_wbuf_flash(c) (c->mtd->type     136 #define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
137 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb    137 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
138 void jffs2_nor_wbuf_flash_cleanup(struct jffs2    138 void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
139 void jffs2_dirty_trigger(struct jffs2_sb_info     139 void jffs2_dirty_trigger(struct jffs2_sb_info *c);
140                                                   140 
141 #endif /* WRITEBUFFER */                          141 #endif /* WRITEBUFFER */
142                                                   142 
143 /* background.c */                                143 /* background.c */
144 int jffs2_start_garbage_collect_thread(struct     144 int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
145 void jffs2_stop_garbage_collect_thread(struct     145 void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
146 void jffs2_garbage_collect_trigger(struct jffs    146 void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
147                                                   147 
148 /* dir.c */                                       148 /* dir.c */
149 extern const struct file_operations jffs2_dir_    149 extern const struct file_operations jffs2_dir_operations;
150 extern const struct inode_operations jffs2_dir    150 extern const struct inode_operations jffs2_dir_inode_operations;
151                                                   151 
152 /* file.c */                                      152 /* file.c */
153 extern const struct file_operations jffs2_file    153 extern const struct file_operations jffs2_file_operations;
154 extern const struct inode_operations jffs2_fil    154 extern const struct inode_operations jffs2_file_inode_operations;
155 extern const struct address_space_operations j    155 extern const struct address_space_operations jffs2_file_address_operations;
156 int jffs2_fsync(struct file *, loff_t, loff_t,    156 int jffs2_fsync(struct file *, loff_t, loff_t, int);
157 int jffs2_do_readpage_unlock (struct inode *in    157 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
158                                                   158 
159 /* ioctl.c */                                     159 /* ioctl.c */
160 long jffs2_ioctl(struct file *, unsigned int,     160 long jffs2_ioctl(struct file *, unsigned int, unsigned long);
161                                                   161 
162 /* symlink.c */                                   162 /* symlink.c */
163 extern const struct inode_operations jffs2_sym    163 extern const struct inode_operations jffs2_symlink_inode_operations;
164                                                   164 
165 /* fs.c */                                        165 /* fs.c */
166 int jffs2_setattr (struct dentry *, struct iat    166 int jffs2_setattr (struct dentry *, struct iattr *);
167 int jffs2_do_setattr (struct inode *, struct i    167 int jffs2_do_setattr (struct inode *, struct iattr *);
168 struct inode *jffs2_iget(struct super_block *,    168 struct inode *jffs2_iget(struct super_block *, unsigned long);
169 void jffs2_evict_inode (struct inode *);          169 void jffs2_evict_inode (struct inode *);
170 void jffs2_dirty_inode(struct inode *inode, in    170 void jffs2_dirty_inode(struct inode *inode, int flags);
171 struct inode *jffs2_new_inode (struct inode *d    171 struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode,
172                                struct jffs2_ra    172                                struct jffs2_raw_inode *ri);
173 int jffs2_statfs (struct dentry *, struct ksta    173 int jffs2_statfs (struct dentry *, struct kstatfs *);
174 int jffs2_do_remount_fs(struct super_block *,     174 int jffs2_do_remount_fs(struct super_block *, int *, char *);
175 int jffs2_do_fill_super(struct super_block *sb    175 int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
176 void jffs2_gc_release_inode(struct jffs2_sb_in    176 void jffs2_gc_release_inode(struct jffs2_sb_info *c,
177                             struct jffs2_inode    177                             struct jffs2_inode_info *f);
178 struct jffs2_inode_info *jffs2_gc_fetch_inode(    178 struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
179                                                   179                                               int inum, int unlinked);
180                                                   180 
181 unsigned char *jffs2_gc_fetch_page(struct jffs    181 unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
182                                    struct jffs    182                                    struct jffs2_inode_info *f,
183                                    unsigned lo    183                                    unsigned long offset,
184                                    unsigned lo    184                                    unsigned long *priv);
185 void jffs2_gc_release_page(struct jffs2_sb_inf    185 void jffs2_gc_release_page(struct jffs2_sb_info *c,
186                            unsigned char *pg,     186                            unsigned char *pg,
187                            unsigned long *priv    187                            unsigned long *priv);
188 void jffs2_flash_cleanup(struct jffs2_sb_info     188 void jffs2_flash_cleanup(struct jffs2_sb_info *c);
189                                                   189 
190                                                   190 
191 /* writev.c */                                    191 /* writev.c */
192 int jffs2_flash_direct_writev(struct jffs2_sb_    192 int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
193                        unsigned long count, lo    193                        unsigned long count, loff_t to, size_t *retlen);
194 int jffs2_flash_direct_write(struct jffs2_sb_i    194 int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
195                         size_t *retlen, const     195                         size_t *retlen, const u_char *buf);
196                                                   196 
197 #endif /* __JFFS2_OS_LINUX_H__ */                 197 #endif /* __JFFS2_OS_LINUX_H__ */
198                                                   198 
199                                                   199 
200                                                   200 

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