LCOM1920-T02G10

#ifndef __MINIX_VFSIF_H

#define __MINIX_VFSIF_H

#include <sys/types.h>

#include <limits.h>

/* VFS/FS flags */

#define REQ_RDONLY                001        /* FS is mounted read-only */

#define REQ_ISROOT                002        /* FS is root file system */

#define PATH_NOFLAGS                000

#define PATH_RET_SYMLINK        010        /* Return a symlink object (i.e.

                                         * do not continue with the contents

                                         * of the symlink if it is the last

                                         * component in a path). */

#define PATH_GET_UCRED                020        /* Request provides a grant ID in m9_l1

                                         * and struct ucred size in m9_s4 (as

                                         * opposed to a REQ_UID). */

#define RES_NOFLAGS                000

#define RES_THREADED                001        /* FS supports multithreading */

#define RES_HASPEEK                002        /* FS implements REQ_PEEK/REQ_BPEEK */

#define RES_64BIT                004        /* FS can handle 64-bit file sizes */

/* VFS/FS error messages */

#define EENTERMOUNT              (-301)

#define ELEAVEMOUNT              (-302)

#define ESYMLINK                 (-303)

/* VFS/FS types */

/* User credential structure */

typedef struct {

        uid_t vu_uid;

        gid_t vu_gid;

        int vu_ngroups;

        gid_t vu_sgroups[NGROUPS_MAX];

} vfs_ucred_t;

/* Request numbers */

#define REQ_GETNODE        (FS_BASE + 1)        /* Should be removed */

#define REQ_PUTNODE        (FS_BASE + 2)

#define REQ_SLINK        (FS_BASE + 3)

#define REQ_FTRUNC        (FS_BASE + 4)

#define REQ_CHOWN        (FS_BASE + 5)

#define REQ_CHMOD        (FS_BASE + 6)

#define REQ_INHIBREAD        (FS_BASE + 7)

#define REQ_STAT        (FS_BASE + 8)

#define REQ_UTIME        (FS_BASE + 9)

#define REQ_STATVFS        (FS_BASE + 10)

#define REQ_BREAD        (FS_BASE + 11)

#define REQ_BWRITE        (FS_BASE + 12)

#define REQ_UNLINK        (FS_BASE + 13)

#define REQ_RMDIR        (FS_BASE + 14)

#define REQ_UNMOUNT        (FS_BASE + 15)

#define REQ_SYNC        (FS_BASE + 16)

#define REQ_NEW_DRIVER        (FS_BASE + 17)

#define REQ_FLUSH        (FS_BASE + 18)

#define REQ_READ        (FS_BASE + 19)

#define REQ_WRITE        (FS_BASE + 20)

#define REQ_MKNOD        (FS_BASE + 21)

#define REQ_MKDIR        (FS_BASE + 22)

#define REQ_CREATE        (FS_BASE + 23)

#define REQ_LINK        (FS_BASE + 24)

#define REQ_RENAME        (FS_BASE + 25)

#define REQ_LOOKUP        (FS_BASE + 26)

#define REQ_MOUNTPOINT        (FS_BASE + 27)

#define REQ_READSUPER        (FS_BASE + 28)

#define REQ_NEWNODE        (FS_BASE + 29)

#define REQ_RDLINK        (FS_BASE + 30)

#define REQ_GETDENTS        (FS_BASE + 31)

#define REQ_PEEK        (FS_BASE + 32)

#define REQ_BPEEK        (FS_BASE + 33)

#define NREQS                            34

#define IS_FS_RQ(type) (((type) & ~0xff) == FS_BASE)

#define TRNS_GET_ID(t)                ((t) & 0xFFFF)

#define TRNS_ADD_ID(t,id)        (((t) << 16) | ((id) & 0xFFFF))

#define TRNS_DEL_ID(t)                ((short)((t) >> 16))

#endif