1 #ifndef __UM_FS_HOSTFS 2 #define __UM_FS_HOSTFS 3 4 #include <os.h> 5 6 /* 7 * These are exactly the same definitions as in fs.h, but the names are 8 * changed so that this file can be included in both kernel and user files. 9 */ 10 11 #define HOSTFS_ATTR_MODE 1 12 #define HOSTFS_ATTR_UID 2 13 #define HOSTFS_ATTR_GID 4 14 #define HOSTFS_ATTR_SIZE 8 15 #define HOSTFS_ATTR_ATIME 16 16 #define HOSTFS_ATTR_MTIME 32 17 #define HOSTFS_ATTR_CTIME 64 18 #define HOSTFS_ATTR_ATIME_SET 128 19 #define HOSTFS_ATTR_MTIME_SET 256 20 21 /* These two are unused by hostfs. */ 22 #define HOSTFS_ATTR_FORCE 512 /* Not a change, but a change it */ 23 #define HOSTFS_ATTR_ATTR_FLAG 1024 24 25 /* 26 * If you are very careful, you'll notice that these two are missing: 27 * 28 * #define ATTR_KILL_SUID 2048 29 * #define ATTR_KILL_SGID 4096 30 * 31 * and this is because they were added in 2.5 development. 32 * Actually, they are not needed by most ->setattr() methods - they are set by 33 * callers of notify_change() to notify that the setuid/setgid bits must be 34 * dropped. 35 * notify_change() will delete those flags, make sure attr->ia_valid & ATTR_MODE 36 * is on, and remove the appropriate bits from attr->ia_mode (attr is a 37 * "struct iattr *"). -BlaisorBlade 38 */ 39 40 struct hostfs_iattr { 41 unsigned int ia_valid; 42 unsigned short ia_mode; 43 uid_t ia_uid; 44 gid_t ia_gid; 45 loff_t ia_size; 46 struct timespec ia_atime; 47 struct timespec ia_mtime; 48 struct timespec ia_ctime; 49 }; 50 51 struct hostfs_stat { 52 unsigned long long ino; 53 unsigned int mode; 54 unsigned int nlink; 55 unsigned int uid; 56 unsigned int gid; 57 unsigned long long size; 58 struct timespec atime, mtime, ctime; 59 unsigned int blksize; 60 unsigned long long blocks; 61 unsigned int maj; 62 unsigned int min; 63 }; 64 65 extern int stat_file(const char *path, struct hostfs_stat *p, int fd); 66 extern int access_file(char *path, int r, int w, int x); 67 extern int open_file(char *path, int r, int w, int append); 68 extern void *open_dir(char *path, int *err_out); 69 extern void seek_dir(void *stream, unsigned long long pos); 70 extern char *read_dir(void *stream, unsigned long long *pos_out, 71 unsigned long long *ino_out, int *len_out, 72 unsigned int *type_out); 73 extern void close_file(void *stream); 74 extern int replace_file(int oldfd, int fd); 75 extern void close_dir(void *stream); 76 extern int read_file(int fd, unsigned long long *offset, char *buf, int len); 77 extern int write_file(int fd, unsigned long long *offset, const char *buf, 78 int len); 79 extern int lseek_file(int fd, long long offset, int whence); 80 extern int fsync_file(int fd, int datasync); 81 extern int file_create(char *name, int mode); 82 extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd); 83 extern int make_symlink(const char *from, const char *to); 84 extern int unlink_file(const char *file); 85 extern int do_mkdir(const char *file, int mode); 86 extern int do_rmdir(const char *file); 87 extern int do_mknod(const char *file, int mode, unsigned int major, 88 unsigned int minor); 89 extern int link_file(const char *from, const char *to); 90 extern int hostfs_do_readlink(char *file, char *buf, int size); 91 extern int rename_file(char *from, char *to); 92 extern int rename2_file(char *from, char *to, unsigned int flags); 93 extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, 94 long long *bfree_out, long long *bavail_out, 95 long long *files_out, long long *ffree_out, 96 void *fsid_out, int fsid_size, long *namelen_out); 97 98 #endif 99