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 request fields */
   8 #define REQ_ACTIME              m9_l2
   9 #define REQ_ACNSEC              m9_l4
  10 #define REQ_COUNT               m9_l2
  11 #define REQ_DEV                 m9_ull1
  12 #define REQ_DIR_INO             m9_l3
  13 #define REQ_FLAGS               m9_s3
  14 #define REQ_GID                 m9_s1
  15 #define REQ_GRANT               m9_l2
  16 #define REQ_GRANT2              m9_l1
  17 #define REQ_GRANT3              m9_l3
  18 #define REQ_INODE_NR            m9_l1
  19 #define REQ_MEM_SIZE            m9_l5
  20 #define REQ_MODE                m9_s3
  21 #define REQ_MODTIME             m9_l3
  22 #define REQ_MODNSEC             m9_l5
  23 #define REQ_NBYTES              m9_l5
  24 #define REQ_PATH_LEN            m9_s2
  25 #define REQ_PATH_SIZE           m9_l5
  26 #define REQ_REN_GRANT_NEW       m9_l1
  27 #define REQ_REN_GRANT_OLD       m9_l2
  28 #define REQ_REN_LEN_NEW         m9_s2
  29 #define REQ_REN_LEN_OLD         m9_s1
  30 #define REQ_REN_NEW_DIR         m9_l4
  31 #define REQ_REN_OLD_DIR         m9_l3
  32 #define REQ_ROOT_INO            m9_l4
  33 #define REQ_SEEK_POS            m9_ull2
  34 #define REQ_TRC_START           m9_ull1
  35 #define REQ_TRC_END             m9_ull2
  36 #define REQ_UCRED_SIZE          m9_s4
  37 #define REQ_UID                 m9_s4
  38
  39 /* VFS/FS reply fields */
  40 #define RES_DEV                 m9_ull1
  41 #define RES_GID                 m9_s1
  42 #define RES_INODE_NR            m9_l1
  43 #define RES_FILE_SIZE           m9_ull2
  44 #define RES_MODE                m9_s2
  45 #define RES_NBYTES              m9_l5
  46 #define RES_OFFSET              m9_s2
  47 #define RES_SEEK_POS            m9_ull2
  48 #define RES_SYMLOOP             m9_s3
  49 #define RES_UID                 m9_s4
  50 #define RES_FLAGS               m9_s3
  51
  52 /* VFS/FS flags */
  53 #define REQ_RDONLY              001     /* FS is mounted read-only */
  54 #define REQ_ISROOT              002     /* FS is root file system */
  55
  56 #define PATH_NOFLAGS            000
  57 #define PATH_RET_SYMLINK        010     /* Return a symlink object (i.e.
  58                                          * do not continue with the contents
  59                                          * of the symlink if it is the last
  60                                          * component in a path). */
  61 #define PATH_GET_UCRED          020     /* Request provides a grant ID in m9_l1
  62                                          * and struct ucred size in m9_s4 (as
  63                                          * opposed to a REQ_UID). */
  64
  65 #define RES_NOFLAGS             000
  66 #define RES_THREADED            001     /* FS supports multithreading */
  67 #define RES_HASPEEK             002     /* FS implements REQ_PEEK/REQ_BPEEK */
  68 #define RES_64BIT               004     /* FS can handle 64-bit file sizes */
  69
  70 /* VFS/FS error messages */
  71 #define EENTERMOUNT              (-301)
  72 #define ELEAVEMOUNT              (-302)
  73 #define ESYMLINK                 (-303)
  74
  75 /* VFS/FS types */
  76
  77 /* User credential structure */
  78 typedef struct {
  79         uid_t vu_uid;
  80         gid_t vu_gid;
  81         int vu_ngroups;
  82         gid_t vu_sgroups[NGROUPS_MAX];
  83 } vfs_ucred_t;
  84
  85 /* Some system types are larger than what the protocol and FSes use */
  86 typedef u16_t   puid_t;         /* Protocol version of uid_t */
  87 typedef u16_t   pgid_t;         /* Protocol version of gid_t */
  88 typedef u16_t   pmode_t;        /* Protocol version of mode_t */
  89 typedef u32_t   pino_t;         /* Protocol version of ino_t */
  90
  91 /* Request numbers */
  92 #define REQ_GETNODE     (FS_BASE + 1)   /* Should be removed */
  93 #define REQ_PUTNODE     (FS_BASE + 2)
  94 #define REQ_SLINK       (FS_BASE + 3)
  95 #define REQ_FTRUNC      (FS_BASE + 4)
  96 #define REQ_CHOWN       (FS_BASE + 5)
  97 #define REQ_CHMOD       (FS_BASE + 6)
  98 #define REQ_INHIBREAD   (FS_BASE + 7)
  99 #define REQ_STAT        (FS_BASE + 8)
 100 #define REQ_UTIME       (FS_BASE + 9)
 101 #define REQ_STATVFS     (FS_BASE + 10)
 102 #define REQ_BREAD       (FS_BASE + 11)
 103 #define REQ_BWRITE      (FS_BASE + 12)
 104 #define REQ_UNLINK      (FS_BASE + 13)
 105 #define REQ_RMDIR       (FS_BASE + 14)
 106 #define REQ_UNMOUNT     (FS_BASE + 15)
 107 #define REQ_SYNC        (FS_BASE + 16)
 108 #define REQ_NEW_DRIVER  (FS_BASE + 17)
 109 #define REQ_FLUSH       (FS_BASE + 18)
 110 #define REQ_READ        (FS_BASE + 19)
 111 #define REQ_WRITE       (FS_BASE + 20)
 112 #define REQ_MKNOD       (FS_BASE + 21)
 113 #define REQ_MKDIR       (FS_BASE + 22)
 114 #define REQ_CREATE      (FS_BASE + 23)
 115 #define REQ_LINK        (FS_BASE + 24)
 116 #define REQ_RENAME      (FS_BASE + 25)
 117 #define REQ_LOOKUP      (FS_BASE + 26)
 118 #define REQ_MOUNTPOINT  (FS_BASE + 27)
 119 #define REQ_READSUPER   (FS_BASE + 28)
 120 #define REQ_NEWNODE     (FS_BASE + 29)
 121 #define REQ_RDLINK      (FS_BASE + 30)
 122 #define REQ_GETDENTS    (FS_BASE + 31)
 123 #define REQ_PEEK        (FS_BASE + 32)
 124 #define REQ_BPEEK       (FS_BASE + 33)
 125
 126 #define NREQS                       34
 127
 128 #define IS_FS_RQ(type) (((type) & ~0xff) == FS_BASE)
 129
 130 #define TRNS_GET_ID(t)          ((t) & 0xFFFF)
 131 #define TRNS_ADD_ID(t,id)       (((t) << 16) | ((id) & 0xFFFF))
 132 #define TRNS_DEL_ID(t)          ((short)((t) >> 16))
 133
 134 #endif
 135