44f34e53d5
This commit introduces a new request type called REQ_BPEEK. It requests minor device blocks from the FS. Analogously to REQ_PEEK, it requests the filesystem to get the requested blocks into its cache, without actually copying the result anywhere. Change-Id: If1d06645b0e17553a64b3167091e9d12efeb3d6f
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
#ifndef __MINIX_VFSIF_H
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#define __MINIX_VFSIF_H
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#include <sys/types.h>
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#include <limits.h>
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/* VFS/FS request fields */
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#define REQ_ACTIME m9_l2
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#define REQ_ACNSEC m9_l4
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#define REQ_COUNT m9_l2
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#define REQ_DEV m9_l5
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#define REQ_DEV2 m9_l1
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#define REQ_DIR_INO m9_l3
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#define REQ_FLAGS m9_s3
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#define REQ_GID m9_s1
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#define REQ_GRANT m9_l2
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#define REQ_GRANT2 m9_l1
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#define REQ_GRANT3 m9_l3
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#define REQ_INODE_NR m9_l1
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#define REQ_MEM_SIZE m9_l5
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#define REQ_MODE m9_s3
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#define REQ_MODTIME m9_l3
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#define REQ_MODNSEC m9_l5
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#define REQ_NBYTES m9_l5
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#define REQ_PATH_LEN m9_s2
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#define REQ_PATH_SIZE m9_l5
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#define REQ_REN_GRANT_NEW m9_l1
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#define REQ_REN_GRANT_OLD m9_l2
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#define REQ_REN_LEN_NEW m9_s2
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#define REQ_REN_LEN_OLD m9_s1
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#define REQ_REN_NEW_DIR m9_l4
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#define REQ_REN_OLD_DIR m9_l3
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#define REQ_ROOT_INO m9_l4
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#define REQ_SEEK_POS_HI m9_l3
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#define REQ_SEEK_POS_LO m9_l4
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#define REQ_TRC_END_HI m9_l4
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#define REQ_TRC_END_LO m9_l5
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#define REQ_TRC_START_HI m9_l2
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#define REQ_TRC_START_LO m9_l3
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#define REQ_UCRED_SIZE m9_s4
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#define REQ_UID m9_s4
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/* VFS/FS reply fields */
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#define RES_DEV m9_l4
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#define RES_GID m9_s1
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#define RES_INODE_NR m9_l1
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#define RES_FILE_SIZE_HI m9_l2
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#define RES_FILE_SIZE_LO m9_l3
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#define RES_MODE m9_s2
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#define RES_NBYTES m9_l5
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#define RES_OFFSET m9_s2
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#define RES_SEEK_POS_HI m9_l3
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#define RES_SEEK_POS_LO m9_l4
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#define RES_SYMLOOP m9_s3
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#define RES_UID m9_s4
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#define RES_CONREQS m9_s3
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/* VFS/FS flags */
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#define REQ_RDONLY 001
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#define REQ_ISROOT 002
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#define PATH_NOFLAGS 000
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#define PATH_RET_SYMLINK 010 /* Return a symlink object (i.e.
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* do not continue with the contents
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* of the symlink if it is the last
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* component in a path). */
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#define PATH_GET_UCRED 020 /* Request provides a grant ID in m9_l1
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* and struct ucred size in m9_s4 (as
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* opposed to a REQ_UID). */
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/* VFS/FS error messages */
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#define EENTERMOUNT (-301)
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#define ELEAVEMOUNT (-302)
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#define ESYMLINK (-303)
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/* VFS/FS types */
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/* User credential structure */
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typedef struct {
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uid_t vu_uid;
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gid_t vu_gid;
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int vu_ngroups;
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gid_t vu_sgroups[NGROUPS_MAX];
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} vfs_ucred_t;
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/* Request numbers */
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#define REQ_GETNODE (VFS_BASE + 1) /* Should be removed */
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#define REQ_PUTNODE (VFS_BASE + 2)
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#define REQ_SLINK (VFS_BASE + 3)
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#define REQ_FTRUNC (VFS_BASE + 4)
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#define REQ_CHOWN (VFS_BASE + 5)
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#define REQ_CHMOD (VFS_BASE + 6)
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#define REQ_INHIBREAD (VFS_BASE + 7)
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#define REQ_STAT (VFS_BASE + 8)
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#define REQ_UTIME (VFS_BASE + 9)
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#define REQ_FSTATFS (VFS_BASE + 10)
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#define REQ_BREAD (VFS_BASE + 11)
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#define REQ_BWRITE (VFS_BASE + 12)
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#define REQ_UNLINK (VFS_BASE + 13)
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#define REQ_RMDIR (VFS_BASE + 14)
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#define REQ_UNMOUNT (VFS_BASE + 15)
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#define REQ_SYNC (VFS_BASE + 16)
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#define REQ_NEW_DRIVER (VFS_BASE + 17)
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#define REQ_FLUSH (VFS_BASE + 18)
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#define REQ_READ (VFS_BASE + 19)
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#define REQ_WRITE (VFS_BASE + 20)
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#define REQ_MKNOD (VFS_BASE + 21)
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#define REQ_MKDIR (VFS_BASE + 22)
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#define REQ_CREATE (VFS_BASE + 23)
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#define REQ_LINK (VFS_BASE + 24)
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#define REQ_RENAME (VFS_BASE + 25)
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#define REQ_LOOKUP (VFS_BASE + 26)
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#define REQ_MOUNTPOINT (VFS_BASE + 27)
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#define REQ_READSUPER (VFS_BASE + 28)
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#define REQ_NEWNODE (VFS_BASE + 29)
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#define REQ_RDLINK (VFS_BASE + 30)
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#define REQ_GETDENTS (VFS_BASE + 31)
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#define REQ_STATVFS (VFS_BASE + 32)
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#define REQ_PEEK (VFS_BASE + 33)
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#define REQ_BPEEK (VFS_BASE + 34)
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#define NREQS 35
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#define IS_VFS_RQ(type) (((type) & ~0xff) == VFS_BASE)
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#define TRNS_GET_ID(t) ((t) & 0xFFFF)
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#define TRNS_ADD_ID(t,id) (((t) << 16) | ((id) & 0xFFFF))
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#define TRNS_DEL_ID(t) ((short)((t) >> 16))
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#define PFS_BASE (VFS_BASE + 100)
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#define PFS_REQ_CHECK_PERMS (PFS_BASE + 1)
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#define PFS_REQ_VERIFY_FD (PFS_BASE + 2)
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#define PFS_REQ_SET_FILP (PFS_BASE + 3)
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#define PFS_REQ_COPY_FILP (PFS_BASE + 4)
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#define PFS_REQ_PUT_FILP (PFS_BASE + 5)
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#define PFS_REQ_CANCEL_FD (PFS_BASE + 6)
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#define PFS_NREQS 7
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#define IS_PFS_VFS_RQ(type) (type >= PFS_BASE && \
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type < (PFS_BASE + PFS_NREQS))
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#endif
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