Linus Torvalds | 1da177e | 2005-04-16 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 | |
| 43 | struct 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 | |
| 55 | extern 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); |
| 60 | extern int access_file(char *path, int r, int w, int x); |
| 61 | extern int open_file(char *path, int r, int w, int append); |
| 62 | extern int file_type(const char *path, int *maj, int *min); |
| 63 | extern void *open_dir(char *path, int *err_out); |
| 64 | extern char *read_dir(void *stream, unsigned long long *pos, |
| 65 | unsigned long long *ino_out, int *len_out); |
| 66 | extern void close_file(void *stream); |
| 67 | extern void close_dir(void *stream); |
| 68 | extern int read_file(int fd, unsigned long long *offset, char *buf, int len); |
| 69 | extern int write_file(int fd, unsigned long long *offset, const char *buf, |
| 70 | int len); |
| 71 | extern int lseek_file(int fd, long long offset, int whence); |
| 72 | extern int file_create(char *name, int ur, int uw, int ux, int gr, |
| 73 | int gw, int gx, int or, int ow, int ox); |
| 74 | extern int set_attr(const char *file, struct hostfs_iattr *attrs); |
| 75 | extern int make_symlink(const char *from, const char *to); |
| 76 | extern int unlink_file(const char *file); |
| 77 | extern int do_mkdir(const char *file, int mode); |
| 78 | extern int do_rmdir(const char *file); |
| 79 | extern int do_mknod(const char *file, int mode, int dev); |
| 80 | extern int link_file(const char *from, const char *to); |
| 81 | extern int do_readlink(char *file, char *buf, int size); |
| 82 | extern int rename_file(char *from, char *to); |
| 83 | extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, |
| 84 | long long *bfree_out, long long *bavail_out, |
| 85 | long long *files_out, long long *ffree_out, |
| 86 | void *fsid_out, int fsid_size, long *namelen_out, |
| 87 | long *spare_out); |
| 88 | |
| 89 | #endif |
| 90 | |
| 91 | /* |
| 92 | * Overrides for Emacs so that we follow Linus's tabbing style. |
| 93 | * Emacs will notice this stuff at the end of the file and automatically |
| 94 | * adjust the settings for this buffer only. This must remain at the end |
| 95 | * of the file. |
| 96 | * --------------------------------------------------------------------------- |
| 97 | * Local variables: |
| 98 | * c-file-style: "linux" |
| 99 | * End: |
| 100 | */ |