include/minix/vfsif.h

   1 #ifndef __MINIX_VFSIF_H
   2 #define __MINIX_VFSIF_H
   3
   4 #include <sys/types.h>
   5 #include <limits.h>
   6
   7 /* VFS/FS flags */
   8 #define REQ_RDONLY              001     /* FS is mounted read-only */
   9 #define REQ_ISROOT              002     /* FS is root file system */
  10
  11 #define PATH_NOFLAGS            000
  12 #define PATH_RET_SYMLINK        010     /* Return a symlink object (i.e.
  13                                          * do not continue with the contents
  14                                          * of the symlink if it is the last
  15                                          * component in a path). */
  16 #define PATH_GET_UCRED          020     /* Request provides a grant ID in m9_l1
  17                                          * and struct ucred size in m9_s4 (as
  18                                          * opposed to a REQ_UID). */
  19
  20 #define RES_NOFLAGS             000
  21 #define RES_THREADED            001     /* FS supports multithreading */
  22 #define RES_HASPEEK             002     /* FS implements REQ_PEEK/REQ_BPEEK */
  23 #define RES_64BIT               004     /* FS can handle 64-bit file sizes */
  24
  25 /* VFS/FS error messages */
  26 #define EENTERMOUNT              (-301)
  27 #define ELEAVEMOUNT              (-302)
  28 #define ESYMLINK                 (-303)
  29
  30 /* VFS/FS types */
  31
  32 /* User credential structure */
  33 typedef struct {
  34         uid_t vu_uid;
  35         gid_t vu_gid;
  36         int vu_ngroups;
  37         gid_t vu_sgroups[NGROUPS_MAX];
  38 } vfs_ucred_t;
  39
  40 /* Request numbers */
  41 #define REQ_GETNODE     (FS_BASE + 1)   /* Should be removed */
  42 #define REQ_PUTNODE     (FS_BASE + 2)
  43 #define REQ_SLINK       (FS_BASE + 3)
  44 #define REQ_FTRUNC      (FS_BASE + 4)
  45 #define REQ_CHOWN       (FS_BASE + 5)
  46 #define REQ_CHMOD       (FS_BASE + 6)
  47 #define REQ_INHIBREAD   (FS_BASE + 7)
  48 #define REQ_STAT        (FS_BASE + 8)
  49 #define REQ_UTIME       (FS_BASE + 9)
  50 #define REQ_STATVFS     (FS_BASE + 10)
  51 #define REQ_BREAD       (FS_BASE + 11)
  52 #define REQ_BWRITE      (FS_BASE + 12)
  53 #define REQ_UNLINK      (FS_BASE + 13)
  54 #define REQ_RMDIR       (FS_BASE + 14)
  55 #define REQ_UNMOUNT     (FS_BASE + 15)
  56 #define REQ_SYNC        (FS_BASE + 16)
  57 #define REQ_NEW_DRIVER  (FS_BASE + 17)
  58 #define REQ_FLUSH       (FS_BASE + 18)
  59 #define REQ_READ        (FS_BASE + 19)
  60 #define REQ_WRITE       (FS_BASE + 20)
  61 #define REQ_MKNOD       (FS_BASE + 21)
  62 #define REQ_MKDIR       (FS_BASE + 22)
  63 #define REQ_CREATE      (FS_BASE + 23)
  64 #define REQ_LINK        (FS_BASE + 24)
  65 #define REQ_RENAME      (FS_BASE + 25)
  66 #define REQ_LOOKUP      (FS_BASE + 26)
  67 #define REQ_MOUNTPOINT  (FS_BASE + 27)
  68 #define REQ_READSUPER   (FS_BASE + 28)
  69 #define REQ_NEWNODE     (FS_BASE + 29)
  70 #define REQ_RDLINK      (FS_BASE + 30)
  71 #define REQ_GETDENTS    (FS_BASE + 31)
  72 #define REQ_PEEK        (FS_BASE + 32)
  73 #define REQ_BPEEK       (FS_BASE + 33)
  74
  75 #define NREQS                       34
  76
  77 #define IS_FS_RQ(type) (((type) & ~0xff) == FS_BASE)
  78
  79 #define TRNS_GET_ID(t)          ((t) & 0xFFFF)
  80 #define TRNS_ADD_ID(t,id)       (((t) << 16) | ((id) & 0xFFFF))
  81 #define TRNS_DEL_ID(t)          ((short)((t) >> 16))
  82
  83 #endif
  84