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 fsync_file(int fd, int datasync); 73 extern int file_create(char *name, int ur, int uw, int ux, int gr, 74 int gw, int gx, int or, int ow, int ox); 75 extern int set_attr(const char *file, struct hostfs_iattr *attrs); 76 extern int make_symlink(const char *from, const char *to); 77 extern int unlink_file(const char *file); 78 extern int do_mkdir(const char *file, int mode); 79 extern int do_rmdir(const char *file); 80 extern int do_mknod(const char *file, int mode, int dev); 81 extern int link_file(const char *from, const char *to); 82 extern int do_readlink(char *file, char *buf, int size); 83 extern int rename_file(char *from, char *to); 84 extern 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 */ 102