1 #ifndef _LINUX_FS_H
2 #define _LINUX_FS_H
3
4
5
6
7
8
9 #include <linux/linkage.h>
10 #include <linux/limits.h>
11 #include <linux/wait.h>
12 #include <linux/types.h>
13 #include <linux/dirent.h>
14 #include <linux/vfs.h>
15 #include <linux/net.h>
16
17
18
19
20
21
22
23
24
25 #undef NR_OPEN
26 #define NR_OPEN 256
27
28 #define NR_INODE 2048
29 #define NR_FILE 1024
30 #define NR_SUPER 32
31 #define NR_HASH 997
32 #define NR_IHASH 131
33 #define NR_FILE_LOCKS 64
34 #define BLOCK_SIZE 1024
35 #define BLOCK_SIZE_BITS 10
36
37 #define MAY_EXEC 1
38 #define MAY_WRITE 2
39 #define MAY_READ 4
40
41 #define READ 0
42 #define WRITE 1
43 #define READA 2
44 #define WRITEA 3
45
46 extern void buffer_init(void);
47 extern unsigned long inode_init(unsigned long start, unsigned long end);
48 extern unsigned long file_table_init(unsigned long start, unsigned long end);
49
50 #define MAJOR(a) (int)((unsigned short)(a) >> 8)
51 #define MINOR(a) (int)((unsigned short)(a) & 0xFF)
52
53 #ifndef NULL
54 #define NULL ((void *) 0)
55 #endif
56
57 #define NIL_FILP ((struct file *)0)
58 #define SEL_IN 1
59 #define SEL_OUT 2
60 #define SEL_EX 4
61
62
63
64
65 #define MS_RDONLY 1
66 #define MS_NOSUID 2
67 #define MS_NODEV 4
68 #define MS_NOEXEC 8
69 #define MS_SYNC 16
70 #define MS_REMOUNT 32
71
72
73
74
75 #define MS_RMT_MASK (MS_RDONLY)
76
77
78
79
80 #define MS_MGC_VAL 0xC0ED0000
81 #define MS_MGC_MSK 0xffff0000
82
83
84
85
86
87
88
89
90
91 #define IS_RDONLY(inode) (((inode)->i_sb) && ((inode)->i_sb->s_flags & MS_RDONLY))
92 #define IS_NOSUID(inode) ((inode)->i_flags & MS_NOSUID)
93 #define IS_NODEV(inode) ((inode)->i_flags & MS_NODEV)
94 #define IS_NOEXEC(inode) ((inode)->i_flags & MS_NOEXEC)
95 #define IS_SYNC(inode) ((inode)->i_flags & MS_SYNC)
96
97
98
99
100 #define BLKROSET 4701
101 #define BLKROGET 4702
102 #define BLKRRPART 4703
103 #define BLKGETSIZE 4704
104 #define BLKFLSBUF 4705
105
106
107
108 #define SCSI_IOCTL_GET_IDLUN 0x5382
109
110
111
112 #define SCSI_IOCTL_TAGGED_ENABLE 0x5383
113 #define SCSI_IOCTL_TAGGED_DISABLE 0x5384
114
115
116 #define BMAP_IOCTL 1
117 #define FIBMAP 1
118 #define FIGETBSZ 2
119
120
121
122 #define NOTIFY_SIZE 1
123 #define NOTIFY_MODE 2
124 #define NOTIFY_TIME 4
125 #define NOTIFY_UIDGID 8
126
127 typedef char buffer_block[BLOCK_SIZE];
128
129 struct buffer_head {
130 char * b_data;
131 unsigned long b_size;
132 unsigned long b_blocknr;
133 dev_t b_dev;
134 unsigned short b_count;
135 unsigned char b_uptodate;
136 unsigned char b_dirt;
137 unsigned char b_lock;
138 unsigned char b_req;
139 struct wait_queue * b_wait;
140 struct buffer_head * b_prev;
141 struct buffer_head * b_next;
142 struct buffer_head * b_prev_free;
143 struct buffer_head * b_next_free;
144 struct buffer_head * b_this_page;
145 struct buffer_head * b_reqnext;
146 };
147
148 #include <linux/pipe_fs_i.h>
149 #include <linux/minix_fs_i.h>
150 #include <linux/ext_fs_i.h>
151 #include <linux/ext2_fs_i.h>
152 #include <linux/hpfs_fs_i.h>
153 #include <linux/msdos_fs_i.h>
154 #include <linux/iso_fs_i.h>
155 #include <linux/nfs_fs_i.h>
156 #include <linux/xia_fs_i.h>
157 #include <linux/sysv_fs_i.h>
158
159 struct inode {
160 dev_t i_dev;
161 unsigned long i_ino;
162 umode_t i_mode;
163 nlink_t i_nlink;
164 uid_t i_uid;
165 gid_t i_gid;
166 dev_t i_rdev;
167 off_t i_size;
168 time_t i_atime;
169 time_t i_mtime;
170 time_t i_ctime;
171 unsigned long i_blksize;
172 unsigned long i_blocks;
173 struct inode_operations * i_op;
174 struct super_block * i_sb;
175 struct wait_queue * i_wait;
176 struct file_lock * i_flock;
177 struct vm_area_struct * i_mmap;
178 struct inode * i_next, * i_prev;
179 struct inode * i_hash_next, * i_hash_prev;
180 struct inode * i_bound_to, * i_bound_by;
181 struct inode * i_mount;
182 struct socket * i_socket;
183 unsigned short i_count;
184 unsigned short i_flags;
185 unsigned char i_lock;
186 unsigned char i_dirt;
187 unsigned char i_pipe;
188 unsigned char i_seek;
189 unsigned char i_update;
190 union {
191 struct pipe_inode_info pipe_i;
192 struct minix_inode_info minix_i;
193 struct ext_inode_info ext_i;
194 struct ext2_inode_info ext2_i;
195 struct hpfs_inode_info hpfs_i;
196 struct msdos_inode_info msdos_i;
197 struct iso_inode_info isofs_i;
198 struct nfs_inode_info nfs_i;
199 struct xiafs_inode_info xiafs_i;
200 struct sysv_inode_info sysv_i;
201 } u;
202 };
203
204 struct file {
205 mode_t f_mode;
206 dev_t f_rdev;
207 off_t f_pos;
208 unsigned short f_flags;
209 unsigned short f_count;
210 unsigned short f_reada;
211 struct file *f_next, *f_prev;
212 struct inode * f_inode;
213 struct file_operations * f_op;
214 };
215
216 struct file_lock {
217 struct file_lock *fl_next;
218 struct task_struct *fl_owner;
219 unsigned int fl_fd;
220 struct wait_queue *fl_wait;
221 char fl_type;
222 char fl_whence;
223 off_t fl_start;
224 off_t fl_end;
225 };
226
227 #include <linux/minix_fs_sb.h>
228 #include <linux/ext_fs_sb.h>
229 #include <linux/ext2_fs_sb.h>
230 #include <linux/hpfs_fs_sb.h>
231 #include <linux/msdos_fs_sb.h>
232 #include <linux/iso_fs_sb.h>
233 #include <linux/nfs_fs_sb.h>
234 #include <linux/xia_fs_sb.h>
235 #include <linux/sysv_fs_sb.h>
236
237 struct super_block {
238 dev_t s_dev;
239 unsigned long s_blocksize;
240 unsigned char s_blocksize_bits;
241 unsigned char s_lock;
242 unsigned char s_rd_only;
243 unsigned char s_dirt;
244 struct super_operations *s_op;
245 unsigned long s_flags;
246 unsigned long s_magic;
247 unsigned long s_time;
248 struct inode * s_covered;
249 struct inode * s_mounted;
250 struct wait_queue * s_wait;
251 union {
252 struct minix_sb_info minix_sb;
253 struct ext_sb_info ext_sb;
254 struct ext2_sb_info ext2_sb;
255 struct hpfs_sb_info hpfs_sb;
256 struct msdos_sb_info msdos_sb;
257 struct isofs_sb_info isofs_sb;
258 struct nfs_sb_info nfs_sb;
259 struct xiafs_sb_info xiafs_sb;
260 struct sysv_sb_info sysv_sb;
261 } u;
262 };
263
264 struct file_operations {
265 int (*lseek) (struct inode *, struct file *, off_t, int);
266 int (*read) (struct inode *, struct file *, char *, int);
267 int (*write) (struct inode *, struct file *, char *, int);
268 int (*readdir) (struct inode *, struct file *, struct dirent *, int);
269 int (*select) (struct inode *, struct file *, int, select_table *);
270 int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
271 int (*mmap) (struct inode *, struct file *, unsigned long, size_t, int, unsigned long);
272 int (*open) (struct inode *, struct file *);
273 void (*release) (struct inode *, struct file *);
274 int (*fsync) (struct inode *, struct file *);
275 };
276
277 struct inode_operations {
278 struct file_operations * default_file_ops;
279 int (*create) (struct inode *,const char *,int,int,struct inode **);
280 int (*lookup) (struct inode *,const char *,int,struct inode **);
281 int (*link) (struct inode *,struct inode *,const char *,int);
282 int (*unlink) (struct inode *,const char *,int);
283 int (*symlink) (struct inode *,const char *,int,const char *);
284 int (*mkdir) (struct inode *,const char *,int,int);
285 int (*rmdir) (struct inode *,const char *,int);
286 int (*mknod) (struct inode *,const char *,int,int,int);
287 int (*rename) (struct inode *,const char *,int,struct inode *,const char *,int);
288 int (*readlink) (struct inode *,char *,int);
289 int (*follow_link) (struct inode *,struct inode *,int,int,struct inode **);
290 int (*bmap) (struct inode *,int);
291 void (*truncate) (struct inode *);
292 int (*permission) (struct inode *, int);
293 };
294
295 struct super_operations {
296 void (*read_inode) (struct inode *);
297 int (*notify_change) (int flags, struct inode *);
298 void (*write_inode) (struct inode *);
299 void (*put_inode) (struct inode *);
300 void (*put_super) (struct super_block *);
301 void (*write_super) (struct super_block *);
302 void (*statfs) (struct super_block *, struct statfs *);
303 int (*remount_fs) (struct super_block *, int *, char *);
304 };
305
306 struct file_system_type {
307 struct super_block *(*read_super) (struct super_block *, void *, int);
308 char *name;
309 int requires_dev;
310 };
311
312 #ifdef __KERNEL__
313
314 asmlinkage int sys_open(const char *, int, int);
315 asmlinkage int sys_close(unsigned int);
316
317 extern int getname(const char * filename, char **result);
318 extern void putname(char * name);
319
320 extern int register_blkdev(unsigned int, const char *, struct file_operations *);
321 extern int blkdev_open(struct inode * inode, struct file * filp);
322 extern struct file_operations def_blk_fops;
323 extern struct inode_operations blkdev_inode_operations;
324
325 extern int register_chrdev(unsigned int, const char *, struct file_operations *);
326 extern int unregister_chrdev( unsigned int major, const char * name);
327 extern int chrdev_open(struct inode * inode, struct file * filp);
328 extern struct file_operations def_chr_fops;
329 extern struct inode_operations chrdev_inode_operations;
330
331 extern void init_fifo(struct inode * inode);
332
333 extern struct file_operations connecting_fifo_fops;
334 extern struct file_operations read_fifo_fops;
335 extern struct file_operations write_fifo_fops;
336 extern struct file_operations rdwr_fifo_fops;
337 extern struct file_operations read_pipe_fops;
338 extern struct file_operations write_pipe_fops;
339 extern struct file_operations rdwr_pipe_fops;
340
341 extern struct file_system_type *get_fs_type(char *name);
342
343 extern int fs_may_mount(dev_t dev);
344 extern int fs_may_umount(dev_t dev, struct inode * mount_root);
345 extern int fs_may_remount_ro(dev_t dev);
346
347 extern struct file *first_file;
348 extern int nr_files;
349 extern struct super_block super_blocks[NR_SUPER];
350
351 extern int shrink_buffers(unsigned int priority);
352
353 extern int nr_buffers;
354 extern int buffermem;
355 extern int nr_buffer_heads;
356
357 extern void check_disk_change(dev_t dev);
358 extern void invalidate_inodes(dev_t dev);
359 extern void invalidate_buffers(dev_t dev);
360 extern int floppy_change(struct buffer_head * first_block);
361 extern void sync_inodes(dev_t dev);
362 extern void sync_dev(dev_t dev);
363 extern int fsync_dev(dev_t dev);
364 extern void sync_supers(dev_t dev);
365 extern int bmap(struct inode * inode,int block);
366 extern int notify_change(int flags, struct inode * inode);
367 extern int namei(const char * pathname, struct inode ** res_inode);
368 extern int lnamei(const char * pathname, struct inode ** res_inode);
369 extern int permission(struct inode * inode,int mask);
370 extern int open_namei(const char * pathname, int flag, int mode,
371 struct inode ** res_inode, struct inode * base);
372 extern int do_mknod(const char * filename, int mode, dev_t dev);
373 extern void iput(struct inode * inode);
374 extern struct inode * __iget(struct super_block * sb,int nr,int crsmnt);
375 extern struct inode * iget(struct super_block * sb,int nr);
376 extern struct inode * get_empty_inode(void);
377 extern void insert_inode_hash(struct inode *);
378 extern void clear_inode(struct inode *);
379 extern struct inode * get_pipe_inode(void);
380 extern struct file * get_empty_filp(void);
381 extern struct buffer_head * get_hash_table(dev_t dev, int block, int size);
382 extern struct buffer_head * getblk(dev_t dev, int block, int size);
383 extern void ll_rw_block(int rw, int nr, struct buffer_head * bh[]);
384 extern void ll_rw_page(int rw, int dev, int nr, char * buffer);
385 extern void ll_rw_swap_file(int rw, int dev, unsigned int *b, int nb, char *buffer);
386 extern void brelse(struct buffer_head * buf);
387 extern void set_blocksize(dev_t dev, int size);
388 extern struct buffer_head * bread(dev_t dev, int block, int size);
389 extern unsigned long bread_page(unsigned long addr,dev_t dev,int b[],int size,int prot);
390 extern struct buffer_head * breada(dev_t dev,int block,...);
391 extern void put_super(dev_t dev);
392 extern dev_t ROOT_DEV;
393
394 extern void mount_root(void);
395
396 extern int char_read(struct inode *, struct file *, char *, int);
397 extern int block_read(struct inode *, struct file *, char *, int);
398 extern int read_ahead[];
399
400 extern int char_write(struct inode *, struct file *, char *, int);
401 extern int block_write(struct inode *, struct file *, char *, int);
402
403 extern int generic_mmap(struct inode *, struct file *, unsigned long, size_t, int, unsigned long);
404
405 extern int block_fsync(struct inode *, struct file *);
406 extern int file_fsync(struct inode *, struct file *);
407
408 #endif
409
410 #endif