src/include/minix/vfsif.h

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#ifndef __MINIX_VFSIF_H
#define __MINIX_VFSIF_H

#include <sys/types.h>
#include <limits.h>

/* VFS/FS request fields */
#define REQ_ACTIME              m9_l2
#define REQ_COUNT               m9_l2
#define REQ_DEV                 m9_l5
#define REQ_DEV2                m9_l1
#define REQ_DIR_INO             m9_l3
#define REQ_DRIVER_E            m9_l2
#define REQ_FLAGS               m9_s3
#define REQ_GID                 m9_s1
#define REQ_GRANT               m9_l2
#define REQ_GRANT2              m9_l1 
#define REQ_GRANT3              m9_l3
#define REQ_INODE_NR            m9_l1
#define REQ_MEM_SIZE            m9_l5
#define REQ_MODE                m9_s3
#define REQ_MODTIME             m9_l3
#define REQ_NBYTES              m9_l5
#define REQ_PATH_LEN            m9_s2
#define REQ_PATH_SIZE           m9_l5
#define REQ_REN_GRANT_NEW       m9_l1
#define REQ_REN_GRANT_OLD       m9_l2
#define REQ_REN_LEN_NEW         m9_s2
#define REQ_REN_LEN_OLD         m9_s1
#define REQ_REN_NEW_DIR         m9_l4
#define REQ_REN_OLD_DIR         m9_l3
#define REQ_ROOT_INO            m9_l4
#define REQ_SEEK_POS_HI         m9_l3
#define REQ_SEEK_POS_LO         m9_l4
#define REQ_TRC_END_HI          m9_l4
#define REQ_TRC_END_LO          m9_l5
#define REQ_TRC_START_HI        m9_l2
#define REQ_TRC_START_LO        m9_l3
#define REQ_UCRED_SIZE          m9_s4 
#define REQ_UID                 m9_s4


/* VFS/FS reply fields */
#define RES_DEV                 m9_l4
#define RES_GID                 m9_s1
#define RES_INODE_NR            m9_l1
#define RES_FILE_SIZE_HI        m9_l2
#define RES_FILE_SIZE_LO        m9_l3
#define RES_MODE                m9_s2
#define RES_NBYTES              m9_l5
#define RES_OFFSET              m9_s2
#define RES_SEEK_POS_HI         m9_l3
#define RES_SEEK_POS_LO         m9_l4
#define RES_SYMLOOP             m9_s3
#define RES_UID                 m9_s4

/* VFS/FS flags */
#define REQ_RDONLY              001
#define REQ_ISROOT              002
#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). */

/* 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     (VFS_BASE + 1)  /* Should be removed */
#define REQ_PUTNODE     (VFS_BASE + 2)
#define REQ_SLINK       (VFS_BASE + 3)
#define REQ_FTRUNC      (VFS_BASE + 4)
#define REQ_CHOWN       (VFS_BASE + 5)
#define REQ_CHMOD       (VFS_BASE + 6)
#define REQ_INHIBREAD   (VFS_BASE + 7)
#define REQ_STAT        (VFS_BASE + 8)
#define REQ_UTIME       (VFS_BASE + 9)
#define REQ_FSTATFS     (VFS_BASE + 10)
#define REQ_BREAD       (VFS_BASE + 11)
#define REQ_BWRITE      (VFS_BASE + 12)
#define REQ_UNLINK      (VFS_BASE + 13)
#define REQ_RMDIR       (VFS_BASE + 14)
#define REQ_UNMOUNT     (VFS_BASE + 15)
#define REQ_SYNC        (VFS_BASE + 16)
#define REQ_NEW_DRIVER  (VFS_BASE + 17)
#define REQ_FLUSH       (VFS_BASE + 18)
#define REQ_READ        (VFS_BASE + 19)
#define REQ_WRITE       (VFS_BASE + 20)
#define REQ_MKNOD       (VFS_BASE + 21)
#define REQ_MKDIR       (VFS_BASE + 22)
#define REQ_CREATE      (VFS_BASE + 23)
#define REQ_LINK        (VFS_BASE + 24)
#define REQ_RENAME      (VFS_BASE + 25)
#define REQ_LOOKUP      (VFS_BASE + 26)
#define REQ_MOUNTPOINT  (VFS_BASE + 27)
#define REQ_READSUPER   (VFS_BASE + 28) 
#define REQ_NEWNODE     (VFS_BASE + 29)
#define REQ_RDLINK      (VFS_BASE + 30)
#define REQ_GETDENTS    (VFS_BASE + 31)

#define NREQS                   32 

#endif

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