fs/hostfs/hostfs.h

   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 #define HOSTFS_ATTR_FORCE       512     /* Not a change, but a change it */
  20 #define HOSTFS_ATTR_ATTR_FLAG   1024
  21
  22 struct hostfs_iattr {
  23         unsigned int    ia_valid;
  24         mode_t          ia_mode;
  25         uid_t           ia_uid;
  26         gid_t           ia_gid;
  27         loff_t          ia_size;
  28         struct timespec ia_atime;
  29         struct timespec ia_mtime;
  30         struct timespec ia_ctime;
  31         unsigned int    ia_attr_flags;
  32 };
  33
  34 extern int stat_file(const char *path, unsigned long long *inode_out,
  35                      int *mode_out, int *nlink_out, int *uid_out, int *gid_out,
  36                      unsigned long long *size_out, struct timespec *atime_out,
  37                      struct timespec *mtime_out, struct timespec *ctime_out,
  38                      int *blksize_out, unsigned long long *blocks_out);
  39 extern int access_file(char *path, int r, int w, int x);
  40 extern int open_file(char *path, int r, int w, int append);
  41 extern int file_type(const char *path, int *maj, int *min);
  42 extern void *open_dir(char *path, int *err_out);
  43 extern char *read_dir(void *stream, unsigned long long *pos,
  44                       unsigned long long *ino_out, int *len_out);
  45 extern void close_file(void *stream);
  46 extern void close_dir(void *stream);
  47 extern int read_file(int fd, unsigned long long *offset, char *buf, int len);
  48 extern int write_file(int fd, unsigned long long *offset, const char *buf,
  49                       int len);
  50 extern int lseek_file(int fd, long long offset, int whence);
  51 extern int file_create(char *name, int ur, int uw, int ux, int gr,
  52                        int gw, int gx, int or, int ow, int ox);
  53 extern int set_attr(const char *file, struct hostfs_iattr *attrs);
  54 extern int make_symlink(const char *from, const char *to);
  55 extern int unlink_file(const char *file);
  56 extern int do_mkdir(const char *file, int mode);
  57 extern int do_rmdir(const char *file);
  58 extern int do_mknod(const char *file, int mode, int dev);
  59 extern int link_file(const char *from, const char *to);
  60 extern int do_readlink(char *file, char *buf, int size);
  61 extern int rename_file(char *from, char *to);
  62 extern int do_statfs(char *root, long *bsize_out, long long *blocks_out,
  63                      long long *bfree_out, long long *bavail_out,
  64                      long long *files_out, long long *ffree_out,
  65                      void *fsid_out, int fsid_size, long *namelen_out,
  66                      long *spare_out);
  67
  68 #endif
  69
  70 /*
  71  * Overrides for Emacs so that we follow Linus's tabbing style.
  72  * Emacs will notice this stuff at the end of the file and automatically
  73  * adjust the settings for this buffer only.  This must remain at the end
  74  * of the file.
  75  * ---------------------------------------------------------------------------
  76  * Local variables:
  77  * c-file-style: "linux"
  78  * End:
  79  */