648 lines
17 KiB
C
648 lines
17 KiB
C
/*
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*
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* Coda: an Experimental Distributed File System
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* Release 3.1
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*
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* Copyright (c) 1987-1998 Carnegie Mellon University
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* All Rights Reserved
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation, and
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* that credit is given to Carnegie Mellon University in all documents
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* and publicity pertaining to direct or indirect use of this code or its
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* derivatives.
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*
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* CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
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* SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
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* FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
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* DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
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* RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
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* ANY DERIVATIVE WORK.
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*
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* Carnegie Mellon encourages users of this software to return any
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* improvements or extensions that they make, and to grant Carnegie
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* Mellon the rights to redistribute these changes without encumbrance.
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*
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* @(#) src/sys/cfs/cfs_venus.c,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
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* $Id: $
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/select.h>
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#include <sys/ioccom.h>
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#include <sys/fcntl.h>
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#include <cfs/coda.h>
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#include <cfs/cnode.h>
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#include <cfs/cfs_venus.h>
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#include <cfs/pioctl.h>
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#define DECL_NO_IN(name) \
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struct cfs_in_hdr *inp; \
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struct name ## _out *outp; \
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int name ## _size = sizeof (struct cfs_in_hdr); \
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int Isize = sizeof (struct cfs_in_hdr); \
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int Osize = sizeof (struct name ## _out); \
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int error
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#define DECL(name) \
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struct name ## _in *inp; \
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struct name ## _out *outp; \
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int name ## _size = sizeof (struct name ## _in); \
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int Isize = sizeof (struct name ## _in); \
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int Osize = sizeof (struct name ## _out); \
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int error
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#define DECL_NO_OUT(name) \
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struct name ## _in *inp; \
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struct cfs_out_hdr *outp; \
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int name ## _size = sizeof (struct name ## _in); \
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int Isize = sizeof (struct name ## _in); \
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int Osize = sizeof (struct cfs_out_hdr); \
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int error
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#define ALLOC_NO_IN(name) \
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if (Osize > name ## _size) \
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name ## _size = Osize; \
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CFS_ALLOC(inp, struct cfs_in_hdr *, name ## _size);\
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outp = (struct name ## _out *) inp
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#define ALLOC(name) \
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if (Osize > name ## _size) \
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name ## _size = Osize; \
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CFS_ALLOC(inp, struct name ## _in *, name ## _size);\
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outp = (struct name ## _out *) inp
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#define ALLOC_NO_OUT(name) \
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if (Osize > name ## _size) \
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name ## _size = Osize; \
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CFS_ALLOC(inp, struct name ## _in *, name ## _size);\
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outp = (struct cfs_out_hdr *) inp
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#define STRCPY(struc, name, len) \
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bcopy(name, (char *)inp + (int)inp->struc, len); \
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((char*)inp + (int)inp->struc)[len++] = 0; \
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Isize += len
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#define INIT_IN(in, op, ident, p) \
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(in)->opcode = (op); \
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(in)->pid = p ? p->p_pid : -1; \
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(in)->pgid = p ? p->p_pgid : -1; \
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(in)->sid = (p && p->p_session && p->p_session->s_leader) ? (p->p_session->s_leader->p_pid) : -1; \
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if (ident != NOCRED) { \
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(in)->cred.cr_uid = ident->cr_uid; \
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(in)->cred.cr_groupid = ident->cr_gid; \
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} else { \
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bzero(&((in)->cred),sizeof(struct coda_cred)); \
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(in)->cred.cr_uid = -1; \
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(in)->cred.cr_groupid = -1; \
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} \
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#define CNV_OFLAG(to, from) \
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do { \
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to = 0; \
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if (from & FREAD) to |= C_O_READ; \
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if (from & FWRITE) to |= C_O_WRITE; \
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if (from & O_TRUNC) to |= C_O_TRUNC; \
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if (from & O_EXCL) to |= C_O_EXCL; \
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} while (0)
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#define CNV_VV2V_ATTR(top, fromp) \
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do { \
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(top)->va_type = (fromp)->va_type; \
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(top)->va_mode = (fromp)->va_mode; \
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(top)->va_nlink = (fromp)->va_nlink; \
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(top)->va_uid = (fromp)->va_uid; \
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(top)->va_gid = (fromp)->va_gid; \
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(top)->va_fsid = VNOVAL; \
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(top)->va_fileid = (fromp)->va_fileid; \
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(top)->va_size = (fromp)->va_size; \
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(top)->va_blocksize = (fromp)->va_blocksize; \
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(top)->va_atime = (fromp)->va_atime; \
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(top)->va_mtime = (fromp)->va_mtime; \
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(top)->va_ctime = (fromp)->va_ctime; \
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(top)->va_gen = (fromp)->va_gen; \
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(top)->va_flags = (fromp)->va_flags; \
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(top)->va_rdev = (fromp)->va_rdev; \
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(top)->va_bytes = (fromp)->va_bytes; \
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(top)->va_filerev = (fromp)->va_filerev; \
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(top)->va_vaflags = VNOVAL; \
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(top)->va_spare = VNOVAL; \
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} while (0)
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#define CNV_V2VV_ATTR(top, fromp) \
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do { \
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(top)->va_type = (fromp)->va_type; \
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(top)->va_mode = (fromp)->va_mode; \
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(top)->va_nlink = (fromp)->va_nlink; \
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(top)->va_uid = (fromp)->va_uid; \
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(top)->va_gid = (fromp)->va_gid; \
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(top)->va_fileid = (fromp)->va_fileid; \
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(top)->va_size = (fromp)->va_size; \
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(top)->va_blocksize = (fromp)->va_blocksize; \
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(top)->va_atime = (fromp)->va_atime; \
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(top)->va_mtime = (fromp)->va_mtime; \
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(top)->va_ctime = (fromp)->va_ctime; \
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(top)->va_gen = (fromp)->va_gen; \
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(top)->va_flags = (fromp)->va_flags; \
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(top)->va_rdev = (fromp)->va_rdev; \
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(top)->va_bytes = (fromp)->va_bytes; \
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(top)->va_filerev = (fromp)->va_filerev; \
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} while (0)
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int
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venus_root(void *mdp,
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struct ucred *cred, struct proc *p,
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/*out*/ ViceFid *VFid)
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{
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DECL_NO_IN(cfs_root); /* sets Isize & Osize */
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ALLOC_NO_IN(cfs_root); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(inp, CFS_ROOT, cred, p);
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error)
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*VFid = outp->VFid;
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CFS_FREE(inp, cfs_root_size);
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return error;
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}
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int
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venus_open(void *mdp, ViceFid *fid, int flag,
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struct ucred *cred, struct proc *p,
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/*out*/ dev_t *dev, ino_t *inode)
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{
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int cflag;
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DECL(cfs_open); /* sets Isize & Osize */
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ALLOC(cfs_open); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_OPEN, cred, p);
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inp->VFid = *fid;
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CNV_OFLAG(cflag, flag);
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inp->flags = cflag;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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*dev = outp->dev;
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*inode = outp->inode;
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}
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CFS_FREE(inp, cfs_open_size);
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return error;
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}
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int
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venus_close(void *mdp, ViceFid *fid, int flag,
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struct ucred *cred, struct proc *p)
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{
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int cflag;
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DECL_NO_OUT(cfs_close); /* sets Isize & Osize */
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ALLOC_NO_OUT(cfs_close); /* sets inp & outp */
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INIT_IN(&inp->ih, CFS_CLOSE, cred, p);
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inp->VFid = *fid;
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CNV_OFLAG(cflag, flag);
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inp->flags = cflag;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_close_size);
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return error;
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}
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/*
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* these two calls will not exist!!! the container file is read/written
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* directly.
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*/
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void
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venus_read(void)
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{
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}
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void
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venus_write(void)
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{
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}
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/*
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* this is a bit sad too. the ioctl's are for the control file, not for
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* normal files.
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*/
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int
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venus_ioctl(void *mdp, ViceFid *fid,
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int com, int flag, caddr_t data,
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struct ucred *cred, struct proc *p)
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{
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DECL(cfs_ioctl); /* sets Isize & Osize */
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struct PioctlData *iap = (struct PioctlData *)data;
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int tmp;
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cfs_ioctl_size = VC_MAXMSGSIZE;
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ALLOC(cfs_ioctl); /* sets inp & outp */
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INIT_IN(&inp->ih, CFS_IOCTL, cred, p);
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inp->VFid = *fid;
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/* command was mutated by increasing its size field to reflect the
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* path and follow args. we need to subtract that out before sending
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* the command to venus.
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*/
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inp->cmd = (com & ~(IOCPARM_MASK << 16));
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tmp = ((com >> 16) & IOCPARM_MASK) - sizeof (char *) - sizeof (int);
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inp->cmd |= (tmp & IOCPARM_MASK) << 16;
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inp->rwflag = flag;
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inp->len = iap->vi.in_size;
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inp->data = (char *)(sizeof (struct cfs_ioctl_in));
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error = copyin(iap->vi.in, (char*)inp + (int)inp->data,
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iap->vi.in_size);
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if (error) {
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CFS_FREE(inp, cfs_ioctl_size);
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return(error);
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}
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Osize = VC_MAXMSGSIZE;
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error = cfscall(mdp, Isize + iap->vi.in_size, &Osize, (char *)inp);
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/* copy out the out buffer. */
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if (!error) {
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if (outp->len > iap->vi.out_size) {
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error = EINVAL;
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} else {
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error = copyout((char *)outp + (int)outp->data,
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iap->vi.out, iap->vi.out_size);
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}
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}
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CFS_FREE(inp, cfs_ioctl_size);
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return error;
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}
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int
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venus_getattr(void *mdp, ViceFid *fid,
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struct ucred *cred, struct proc *p,
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/*out*/ struct vattr *vap)
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{
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DECL(cfs_getattr); /* sets Isize & Osize */
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ALLOC(cfs_getattr); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_GETATTR, cred, p);
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inp->VFid = *fid;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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CNV_VV2V_ATTR(vap, &outp->attr);
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}
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CFS_FREE(inp, cfs_getattr_size);
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return error;
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}
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int
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venus_setattr(void *mdp, ViceFid *fid, struct vattr *vap,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_setattr); /* sets Isize & Osize */
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ALLOC_NO_OUT(cfs_setattr); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_SETATTR, cred, p);
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inp->VFid = *fid;
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CNV_V2VV_ATTR(&inp->attr, vap);
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_setattr_size);
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return error;
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}
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int
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venus_access(void *mdp, ViceFid *fid, int mode,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_access); /* sets Isize & Osize */
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ALLOC_NO_OUT(cfs_access); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_ACCESS, cred, p);
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inp->VFid = *fid;
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/* NOTE:
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* NetBSD and Venus internals use the "data" in the low 3 bits.
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* Hence, the conversion.
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*/
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inp->flags = mode>>6;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_access_size);
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return error;
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}
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int
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venus_readlink(void *mdp, ViceFid *fid,
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struct ucred *cred, struct proc *p,
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/*out*/ char **str, int *len)
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{
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DECL(cfs_readlink); /* sets Isize & Osize */
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cfs_readlink_size += CFS_MAXPATHLEN;
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ALLOC(cfs_readlink); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_READLINK, cred, p);
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inp->VFid = *fid;
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Osize += CFS_MAXPATHLEN;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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CFS_ALLOC(*str, char *, outp->count);
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*len = outp->count;
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bcopy((char *)outp + (int)outp->data, *str, *len);
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}
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CFS_FREE(inp, cfs_readlink_size);
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return error;
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}
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int
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venus_fsync(void *mdp, ViceFid *fid,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_fsync); /* sets Isize & Osize */
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ALLOC_NO_OUT(cfs_fsync); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_FSYNC, cred, p);
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inp->VFid = *fid;
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_fsync_size);
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return error;
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}
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int
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venus_lookup(void *mdp, ViceFid *fid,
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const char *nm, int len,
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struct ucred *cred, struct proc *p,
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/*out*/ ViceFid *VFid, int *vtype)
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{
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DECL(cfs_lookup); /* sets Isize & Osize */
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cfs_lookup_size += len + 1;
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ALLOC(cfs_lookup); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_LOOKUP, cred, p);
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inp->VFid = *fid;
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inp->name = Isize;
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STRCPY(name, nm, len); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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*VFid = outp->VFid;
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*vtype = outp->vtype;
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}
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CFS_FREE(inp, cfs_lookup_size);
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return error;
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}
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int
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venus_create(void *mdp, ViceFid *fid,
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const char *nm, int len, int exclusive, int mode, struct vattr *va,
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struct ucred *cred, struct proc *p,
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/*out*/ ViceFid *VFid, struct vattr *attr)
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{
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DECL(cfs_create); /* sets Isize & Osize */
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cfs_create_size += len + 1;
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ALLOC(cfs_create); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_CREATE, cred, p);
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inp->VFid = *fid;
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inp->excl = exclusive ? C_O_EXCL : 0;
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inp->mode = mode;
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CNV_V2VV_ATTR(&inp->attr, va);
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inp->name = Isize;
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STRCPY(name, nm, len); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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*VFid = outp->VFid;
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CNV_VV2V_ATTR(attr, &outp->attr);
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}
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CFS_FREE(inp, cfs_create_size);
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return error;
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}
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int
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venus_remove(void *mdp, ViceFid *fid,
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const char *nm, int len,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_remove); /* sets Isize & Osize */
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cfs_remove_size += len + 1;
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ALLOC_NO_OUT(cfs_remove); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_REMOVE, cred, p);
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inp->VFid = *fid;
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inp->name = Isize;
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STRCPY(name, nm, len); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_remove_size);
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return error;
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}
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int
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venus_link(void *mdp, ViceFid *fid, ViceFid *tfid,
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const char *nm, int len,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_link); /* sets Isize & Osize */
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cfs_link_size += len + 1;
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ALLOC_NO_OUT(cfs_link); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_LINK, cred, p);
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inp->sourceFid = *fid;
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inp->destFid = *tfid;
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inp->tname = Isize;
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STRCPY(tname, nm, len); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_link_size);
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return error;
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}
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int
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venus_rename(void *mdp, ViceFid *fid, ViceFid *tfid,
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const char *nm, int len, const char *tnm, int tlen,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_rename); /* sets Isize & Osize */
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cfs_rename_size += len + 1 + tlen + 1;
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ALLOC_NO_OUT(cfs_rename); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_RENAME, cred, p);
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inp->sourceFid = *fid;
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inp->destFid = *tfid;
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inp->srcname = Isize;
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STRCPY(srcname, nm, len); /* increments Isize */
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inp->destname = Isize;
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STRCPY(destname, tnm, tlen); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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CFS_FREE(inp, cfs_rename_size);
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return error;
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}
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int
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venus_mkdir(void *mdp, ViceFid *fid,
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const char *nm, int len, struct vattr *va,
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struct ucred *cred, struct proc *p,
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/*out*/ ViceFid *VFid, struct vattr *ova)
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{
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DECL(cfs_mkdir); /* sets Isize & Osize */
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cfs_mkdir_size += len + 1;
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ALLOC(cfs_mkdir); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_MKDIR, cred, p);
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inp->VFid = *fid;
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CNV_V2VV_ATTR(&inp->attr, va);
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inp->name = Isize;
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STRCPY(name, nm, len); /* increments Isize */
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
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if (!error) {
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*VFid = outp->VFid;
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CNV_VV2V_ATTR(ova, &outp->attr);
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}
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CFS_FREE(inp, cfs_mkdir_size);
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return error;
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}
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int
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venus_rmdir(void *mdp, ViceFid *fid,
|
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const char *nm, int len,
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struct ucred *cred, struct proc *p)
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{
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DECL_NO_OUT(cfs_rmdir); /* sets Isize & Osize */
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cfs_rmdir_size += len + 1;
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ALLOC_NO_OUT(cfs_rmdir); /* sets inp & outp */
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/* send the open to venus. */
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INIT_IN(&inp->ih, CFS_RMDIR, cred, p);
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inp->VFid = *fid;
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inp->name = Isize;
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STRCPY(name, nm, len); /* increments Isize */
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|
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
|
|
|
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CFS_FREE(inp, cfs_rmdir_size);
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return error;
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}
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|
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int
|
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venus_symlink(void *mdp, ViceFid *fid,
|
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const char *lnm, int llen, const char *nm, int len, struct vattr *va,
|
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struct ucred *cred, struct proc *p)
|
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{
|
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DECL_NO_OUT(cfs_symlink); /* sets Isize & Osize */
|
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cfs_symlink_size += llen + 1 + len + 1;
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ALLOC_NO_OUT(cfs_symlink); /* sets inp & outp */
|
|
|
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/* send the open to venus. */
|
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INIT_IN(&inp->ih, CFS_SYMLINK, cred, p);
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inp->VFid = *fid;
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CNV_V2VV_ATTR(&inp->attr, va);
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|
|
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inp->srcname = Isize;
|
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STRCPY(srcname, lnm, llen); /* increments Isize */
|
|
|
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inp->tname = Isize;
|
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STRCPY(tname, nm, len); /* increments Isize */
|
|
|
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error = cfscall(mdp, Isize, &Osize, (char *)inp);
|
|
|
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CFS_FREE(inp, cfs_symlink_size);
|
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return error;
|
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}
|
|
|
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int
|
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venus_readdir(void *mdp, ViceFid *fid,
|
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int count, int offset,
|
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struct ucred *cred, struct proc *p,
|
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/*out*/ char *buffer, int *len)
|
|
{
|
|
DECL(cfs_readdir); /* sets Isize & Osize */
|
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cfs_readdir_size = VC_MAXMSGSIZE;
|
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ALLOC(cfs_readdir); /* sets inp & outp */
|
|
|
|
/* send the open to venus. */
|
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INIT_IN(&inp->ih, CFS_READDIR, cred, p);
|
|
inp->VFid = *fid;
|
|
inp->count = count;
|
|
inp->offset = offset;
|
|
|
|
Osize = VC_MAXMSGSIZE;
|
|
error = cfscall(mdp, Isize, &Osize, (char *)inp);
|
|
if (!error) {
|
|
bcopy((char *)outp + (int)outp->data, buffer, outp->size);
|
|
*len = outp->size;
|
|
}
|
|
|
|
CFS_FREE(inp, cfs_readdir_size);
|
|
return error;
|
|
}
|
|
|
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int
|
|
venus_fhtovp(void *mdp, ViceFid *fid,
|
|
struct ucred *cred, struct proc *p,
|
|
/*out*/ ViceFid *VFid, int *vtype)
|
|
{
|
|
DECL(cfs_vget); /* sets Isize & Osize */
|
|
ALLOC(cfs_vget); /* sets inp & outp */
|
|
|
|
/* Send the open to Venus. */
|
|
INIT_IN(&inp->ih, CFS_VGET, cred, p);
|
|
inp->VFid = *fid;
|
|
|
|
error = cfscall(mdp, Isize, &Osize, (char *)inp);
|
|
if (!error) {
|
|
*VFid = outp->VFid;
|
|
*vtype = outp->vtype;
|
|
}
|
|
|
|
CFS_FREE(inp, cfs_vget_size);
|
|
return error;
|
|
}
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