cc810ee4d9
The main motivation for this change is that only Loris supports multithreading, and Loris supports dynamic thread allocation, so the number of supported threads can be implemented as a bit flag (i.e., either 1 or "at least as many as VFS has"). The ABI break obviates the need to support file system versioning at this time, and several other aspects are better implemented as flags as well. Other changes: - replace peek/bpeek test upon mount with FS flag as well; - mark libsffs as 64-bit file size capable; - remove old (3.2.1) getdents support. Change-Id: I313eace9c50ed816656c31cd47d969033d952a03
156 lines
4.5 KiB
C
156 lines
4.5 KiB
C
#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_ACNSEC m9_l4
|
|
#define REQ_COUNT m9_l2
|
|
#define REQ_DEV m9_l5
|
|
#define REQ_DEV2 m9_l1
|
|
#define REQ_DIR_INO m9_l3
|
|
#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_MODNSEC m9_l5
|
|
#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
|
|
#define RES_FLAGS m9_s3
|
|
|
|
/* 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;
|
|
|
|
/* Some system types are larger than what the protocol and FSes use */
|
|
typedef u16_t puid_t; /* Protocol version of uid_t */
|
|
typedef u16_t pgid_t; /* Protocol version of gid_t */
|
|
typedef u16_t pmode_t; /* Protocol version of mode_t */
|
|
typedef u32_t pino_t; /* Protocol version of ino_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_STATVFS (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 REQ_PEEK (VFS_BASE + 32)
|
|
#define REQ_BPEEK (VFS_BASE + 33)
|
|
|
|
#define NREQS 34
|
|
|
|
#define IS_VFS_RQ(type) (((type) & ~0xff) == VFS_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))
|
|
|
|
#define PFS_BASE (VFS_BASE + 100)
|
|
|
|
#define PFS_REQ_CHECK_PERMS (PFS_BASE + 1)
|
|
#define PFS_REQ_VERIFY_FD (PFS_BASE + 2)
|
|
#define PFS_REQ_SET_FILP (PFS_BASE + 3)
|
|
#define PFS_REQ_COPY_FILP (PFS_BASE + 4)
|
|
#define PFS_REQ_PUT_FILP (PFS_BASE + 5)
|
|
#define PFS_REQ_CANCEL_FD (PFS_BASE + 6)
|
|
|
|
#define PFS_NREQS 7
|
|
|
|
#define IS_PFS_VFS_RQ(type) (type >= PFS_BASE && \
|
|
type < (PFS_BASE + PFS_NREQS))
|
|
|
|
#endif
|
|
|