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gerrit-public.fairphone.software / kernel / msm-4.9 / a2d76bd8fa29f9b6dbf3ee8f6bc7bdda21bc5ce8 / . / fs / hostfs / hostfs.h
blob: 67bca0d4a33ba5977a94c6a3d71b636010ac67a7 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef __UM_FS_HOSTFS
2#define __UM_FS_HOSTFS
3
4#include "os.h"
5
6/* These are exactly the same definitions as in fs.h, but the names are
7 * changed so that this file can be included in both kernel and user files.
8 */
9
10#define HOSTFS_ATTR_MODE 1
11#define HOSTFS_ATTR_UID 2
12#define HOSTFS_ATTR_GID 4
13#define HOSTFS_ATTR_SIZE 8
14#define HOSTFS_ATTR_ATIME 16
15#define HOSTFS_ATTR_MTIME 32
16#define HOSTFS_ATTR_CTIME 64
17#define HOSTFS_ATTR_ATIME_SET 128
18#define HOSTFS_ATTR_MTIME_SET 256
19
20/* These two are unused by hostfs. */
21#define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */
22#define HOSTFS_ATTR_ATTR_FLAG 1024
23
24/* If you are very careful, you'll notice that these two are missing:
25 *
26 * #define ATTR_KILL_SUID 2048
27 * #define ATTR_KILL_SGID 4096
28 *
29 * and this is because they were added in 2.5 development in this patch:
30 *
31 * http://linux.bkbits.net:8080/linux-2.5/
32 * cset@3caf4a12k4XgDzK7wyK-TGpSZ9u2Ww?nav=index.html
33 * |src/.|src/include|src/include/linux|related/include/linux/fs.h
34 *
35 * Actually, they are not needed by most ->setattr() methods - they are set by
36 * callers of notify_change() to notify that the setuid/setgid bits must be
37 * dropped.
38 * notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE
39 * is on, and remove the appropriate bits from attr->ia_mode (attr is a
40 * "struct iattr *"). -BlaisorBlade
41 */
42
43struct hostfs_iattr {
44 unsigned int ia_valid;
45 mode_t ia_mode;
46 uid_t ia_uid;
47 gid_t ia_gid;
48 loff_t ia_size;
49 struct timespec ia_atime;
50 struct timespec ia_mtime;
51 struct timespec ia_ctime;
52 unsigned int ia_attr_flags;
53};
54
55extern int stat_file(const char *path, unsigned long long *inode_out,
56 int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
57 unsigned long long *size_out, struct timespec *atime_out,
58 struct timespec *mtime_out, struct timespec *ctime_out,
59 int *blksize_out, unsigned long long *blocks_out);
60extern int access_file(char *path, int r, int w, int x);
61extern int open_file(char *path, int r, int w, int append);
62extern int file_type(const char *path, int *maj, int *min);
63extern void *open_dir(char *path, int *err_out);
64extern char *read_dir(void *stream, unsigned long long *pos,
65 unsigned long long *ino_out, int *len_out);
66extern void close_file(void *stream);
67extern void close_dir(void *stream);
68extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
69extern int write_file(int fd, unsigned long long *offset, const char *buf,
70 int len);
71extern int lseek_file(int fd, long long offset, int whence);
Paolo 'Blaisorblade' Giarrussoa2d76bd2005-07-28 21:16:15 -0700[diff] [blame^]72extern int fsync_file(int fd, int datasync);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]73extern int file_create(char *name, int ur, int uw, int ux, int gr,
74 int gw, int gx, int or, int ow, int ox);
75extern int set_attr(const char *file, struct hostfs_iattr *attrs);
76extern int make_symlink(const char *from, const char *to);
77extern int unlink_file(const char *file);
78extern int do_mkdir(const char *file, int mode);
79extern int do_rmdir(const char *file);
80extern int do_mknod(const char *file, int mode, int dev);
81extern int link_file(const char *from, const char *to);
82extern int do_readlink(char *file, char *buf, int size);
83extern int rename_file(char *from, char *to);
84extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
85 long long *bfree_out, long long *bavail_out,
86 long long *files_out, long long *ffree_out,
87 void *fsid_out, int fsid_size, long *namelen_out,
88 long *spare_out);
89
90#endif
91
92/*
93 * Overrides for Emacs so that we follow Linus's tabbing style.
94 * Emacs will notice this stuff at the end of the file and automatically
95 * adjust the settings for this buffer only. This must remain at the end
96 * of the file.
97 * ---------------------------------------------------------------------------
98 * Local variables:
99 * c-file-style: "linux"
100 * End:
101 */