* Copyright (c) 1982, 1986, 1989 Regents of the University of California.
* All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * %sccs.include.redist.c%
*
- * @(#)ufs_vnops.c 7.24 (Berkeley) %G%
+ * @(#)ufs_vnops.c 7.84 (Berkeley) %G%
*/
-#include "param.h"
-#include "systm.h"
-#include "user.h"
-#include "kernel.h"
-#include "file.h"
-#include "stat.h"
-#include "buf.h"
-#include "proc.h"
-#include "uio.h"
-#include "socket.h"
-#include "socketvar.h"
-#include "conf.h"
-#include "mount.h"
-#include "vnode.h"
-#include "../ufs/inode.h"
-#include "../ufs/fs.h"
-#include "../ufs/quota.h"
-
-/*
- * Global vfs data structures for ufs
- */
-
-int ufs_lookup(),
- ufs_create(),
- ufs_mknod(),
- ufs_open(),
- ufs_close(),
- ufs_access(),
- ufs_getattr(),
- ufs_setattr(),
- ufs_read(),
- ufs_write(),
- ufs_ioctl(),
- ufs_select(),
- ufs_mmap(),
- ufs_fsync(),
- ufs_seek(),
- ufs_remove(),
- ufs_link(),
- ufs_rename(),
- ufs_mkdir(),
- ufs_rmdir(),
- ufs_symlink(),
- ufs_readdir(),
- ufs_readlink(),
- ufs_abortop(),
- ufs_inactive(),
- ufs_reclaim(),
- ufs_lock(),
- ufs_unlock(),
- ufs_bmap(),
- ufs_strategy();
-
-struct vnodeops ufs_vnodeops = {
- ufs_lookup,
- ufs_create,
- ufs_mknod,
- ufs_open,
- ufs_close,
- ufs_access,
- ufs_getattr,
- ufs_setattr,
- ufs_read,
- ufs_write,
- ufs_ioctl,
- ufs_select,
- ufs_mmap,
- ufs_fsync,
- ufs_seek,
- ufs_remove,
- ufs_link,
- ufs_rename,
- ufs_mkdir,
- ufs_rmdir,
- ufs_symlink,
- ufs_readdir,
- ufs_readlink,
- ufs_abortop,
- ufs_inactive,
- ufs_reclaim,
- ufs_lock,
- ufs_unlock,
- ufs_bmap,
- ufs_strategy,
-};
-
-int spec_lookup(),
- spec_open(),
- ufsspec_read(),
- ufsspec_write(),
- spec_strategy(),
- spec_ioctl(),
- spec_select(),
- ufsspec_close(),
- spec_badop(),
- spec_nullop();
-
-struct vnodeops spec_inodeops = {
- spec_lookup, /* lookup */
- spec_badop, /* create */
- spec_badop, /* mknod */
- spec_open, /* open */
- ufsspec_close, /* close */
- ufs_access, /* access */
- ufs_getattr, /* getattr */
- ufs_setattr, /* setattr */
- ufsspec_read, /* read */
- ufsspec_write, /* write */
- spec_ioctl, /* ioctl */
- spec_select, /* select */
- spec_badop, /* mmap */
- spec_nullop, /* fsync */
- spec_badop, /* seek */
- spec_badop, /* remove */
- spec_badop, /* link */
- spec_badop, /* rename */
- spec_badop, /* mkdir */
- spec_badop, /* rmdir */
- spec_badop, /* symlink */
- spec_badop, /* readdir */
- spec_badop, /* readlink */
- spec_badop, /* abortop */
- ufs_inactive, /* inactive */
- ufs_reclaim, /* reclaim */
- ufs_lock, /* lock */
- ufs_unlock, /* unlock */
- spec_badop, /* bmap */
- spec_strategy, /* strategy */
-};
-
-enum vtype iftovt_tab[8] = {
- VNON, VCHR, VDIR, VBLK, VREG, VLNK, VSOCK, VBAD,
-};
-int vttoif_tab[8] = {
- 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFMT,
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/resourcevar.h>
+#include <sys/kernel.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/conf.h>
+#include <sys/mount.h>
+#include <sys/vnode.h>
+#include <sys/specdev.h>
+#include <sys/fifo.h>
+#include <sys/malloc.h>
+
+#include <ufs/ufs/lockf.h>
+#include <ufs/ufs/quota.h>
+#include <ufs/ufs/inode.h>
+#include <ufs/ufs/dir.h>
+#include <ufs/ufs/ufsmount.h>
+#include <ufs/ufs/ufs_extern.h>
+
+int ufs_chmod __P((struct vnode *, int, struct ucred *, struct proc *));
+int ufs_chown
+ __P((struct vnode *, u_int, u_int, struct ucred *, struct proc *));
+
+#ifdef _NOQUAD
+#define SETHIGH(q, h) (q).val[_QUAD_HIGHWORD] = (h)
+#define SETLOW(q, l) (q).val[_QUAD_LOWWORD] = (l)
+#else /* QUAD */
+union _qcvt {
+ quad_t qcvt;
+ long val[2];
};
+#define SETHIGH(q, h) { \
+ union _qcvt tmp; \
+ tmp.qcvt = (q); \
+ tmp.val[_QUAD_HIGHWORD] = (h); \
+ (q) = tmp.qcvt; \
+}
+#define SETLOW(q, l) { \
+ union _qcvt tmp; \
+ tmp.qcvt = (q); \
+ tmp.val[_QUAD_LOWWORD] = (l); \
+ (q) = tmp.qcvt; \
+}
+#endif /* QUAD */
/*
* Create a regular file
*/
-ufs_create(ndp, vap)
- struct nameidata *ndp;
+int
+ufs_create(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
struct vattr *vap;
{
- struct inode *ip;
int error;
- if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip))
+ if (error =
+ ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), dvp, vpp, cnp))
return (error);
- ndp->ni_vp = ITOV(ip);
return (0);
}
* Mknod vnode call
*/
/* ARGSUSED */
-ufs_mknod(ndp, vap, cred)
- struct nameidata *ndp;
- struct ucred *cred;
+int
+ufs_mknod(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
struct vattr *vap;
{
- register struct vnode *vp;
- struct inode *ip;
+ register struct inode *ip;
int error;
- if (error = maknode(MAKEIMODE(vap->va_type, vap->va_mode), ndp, &ip))
+ if (error =
+ ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), dvp, vpp, cnp))
return (error);
- vp = ITOV(ip);
- if (vap->va_rdev) {
+ ip = VTOI(*vpp);
+ ip->i_flag |= IACC|IUPD|ICHG;
+ if (vap->va_rdev != VNOVAL) {
/*
* Want to be able to use this to make badblock
* inodes, so don't truncate the dev number.
*/
ip->i_rdev = vap->va_rdev;
- ip->i_flag |= IACC|IUPD|ICHG;
}
/*
* Remove inode so that it will be reloaded by iget and
* checked to see if it is an alias of an existing entry
* in the inode cache.
*/
- iput(ip);
- vp->v_type = VNON;
- vgone(vp);
+ vput(*vpp);
+ (*vpp)->v_type = VNON;
+ vgone(*vpp);
+ *vpp = 0;
return (0);
}
* Nothing to do.
*/
/* ARGSUSED */
-ufs_open(vp, mode, cred)
+int
+ufs_open(vp, mode, cred, p)
struct vnode *vp;
int mode;
struct ucred *cred;
+ struct proc *p;
{
return (0);
* Update the times on the inode.
*/
/* ARGSUSED */
-ufs_close(vp, fflag, cred)
+int
+ufs_close(vp, fflag, cred, p)
struct vnode *vp;
int fflag;
struct ucred *cred;
+ struct proc *p;
{
- register struct inode *ip = VTOI(vp);
+ register struct inode *ip;
- if (vp->v_count > 1 && !(ip->i_flag & ILOCKED))
+ ip = VTOI(vp);
+ if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED))
ITIMES(ip, &time, &time);
return (0);
}
-ufs_access(vp, mode, cred)
+/*
+ * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC.
+ * The mode is shifted to select the owner/group/other fields. The
+ * super user is granted all permissions.
+ */
+int
+ufs_access(vp, mode, cred, p)
struct vnode *vp;
- int mode;
+ register int mode;
struct ucred *cred;
+ struct proc *p;
{
+ register struct inode *ip = VTOI(vp);
+ register gid_t *gp;
+ int i, error;
- return (iaccess(VTOI(vp), mode, cred));
+#ifdef DIAGNOSTIC
+ if (!VOP_ISLOCKED(vp)) {
+ vprint("ufs_access: not locked", vp);
+ panic("ufs_access: not locked");
+ }
+#endif
+#ifdef QUOTA
+ if (mode & VWRITE) {
+ switch (vp->v_type) {
+ case VREG: case VDIR: case VLNK:
+ if (error = getinoquota(ip))
+ return (error);
+ }
+ }
+#endif /* QUOTA */
+ /*
+ * If you're the super-user, you always get access.
+ */
+ if (cred->cr_uid == 0)
+ return (0);
+ /*
+ * Access check is based on only one of owner, group, public.
+ * If not owner, then check group. If not a member of the
+ * group, then check public access.
+ */
+ if (cred->cr_uid != ip->i_uid) {
+ mode >>= 3;
+ gp = cred->cr_groups;
+ for (i = 0; i < cred->cr_ngroups; i++, gp++)
+ if (ip->i_gid == *gp)
+ goto found;
+ mode >>= 3;
+found:
+ ;
+ }
+ if ((ip->i_mode & mode) != 0)
+ return (0);
+ return (EACCES);
}
/* ARGSUSED */
-ufs_getattr(vp, vap, cred)
+int
+ufs_getattr(vp, vap, cred, p)
struct vnode *vp;
register struct vattr *vap;
struct ucred *cred;
+ struct proc *p;
{
- register struct inode *ip = VTOI(vp);
+ register struct inode *ip;
+ ip = VTOI(vp);
ITIMES(ip, &time, &time);
/*
* Copy from inode table
vap->va_uid = ip->i_uid;
vap->va_gid = ip->i_gid;
vap->va_rdev = (dev_t)ip->i_rdev;
- vap->va_size = ip->i_din.di_qsize.val[0];
- vap->va_size1 = ip->i_din.di_qsize.val[1];
+#ifdef tahoe
+ vap->va_size = ip->i_size;
+ vap->va_size_rsv = 0;
+#else
+ vap->va_qsize = ip->i_din.di_qsize;
+#endif
vap->va_atime.tv_sec = ip->i_atime;
vap->va_atime.tv_usec = 0;
vap->va_mtime.tv_sec = ip->i_mtime;
else if (vp->v_type == VCHR)
vap->va_blocksize = MAXBSIZE;
else
- vap->va_blocksize = ip->i_fs->fs_bsize;
+ vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
vap->va_bytes = dbtob(ip->i_blocks);
- vap->va_bytes1 = -1;
+#ifdef _NOQUAD
+ vap->va_bytes_rsv = 0;
+#endif
vap->va_type = vp->v_type;
+ vap->va_filerev = ip->i_modrev;
return (0);
}
/*
* Set attribute vnode op. called from several syscalls
*/
-ufs_setattr(vp, vap, cred)
+int
+ufs_setattr(vp, vap, cred, p)
register struct vnode *vp;
register struct vattr *vap;
register struct ucred *cred;
+ struct proc *p;
{
- register struct inode *ip = VTOI(vp);
- int error = 0;
+ register struct inode *ip;
+ int error;
/*
- * Check for unsetable attributes.
+ * Check for unsettable attributes.
*/
if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
(vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
* Go through the fields and update iff not VNOVAL.
*/
if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL)
- if (error = chown1(vp, vap->va_uid, vap->va_gid, cred))
+ if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, p))
return (error);
if (vap->va_size != VNOVAL) {
if (vp->v_type == VDIR)
return (EISDIR);
- if (error = itrunc(ip, vap->va_size))
+ if (error = VOP_TRUNCATE(vp, vap->va_size, 0)) /* IO_SYNC? */
return (error);
}
+ ip = VTOI(vp);
if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
if (cred->cr_uid != ip->i_uid &&
- (error = suser(cred, &u.u_acflag)))
+ (error = suser(cred, &p->p_acflag)))
return (error);
if (vap->va_atime.tv_sec != VNOVAL)
ip->i_flag |= IACC;
if (vap->va_mtime.tv_sec != VNOVAL)
ip->i_flag |= IUPD;
ip->i_flag |= ICHG;
- if (error = iupdat(ip, &vap->va_atime, &vap->va_mtime, 1))
+ if (error = VOP_UPDATE(vp, &vap->va_atime, &vap->va_mtime, 1))
return (error);
}
+ error = 0;
if (vap->va_mode != (u_short)VNOVAL)
- error = chmod1(vp, (int)vap->va_mode, cred);
+ error = ufs_chmod(vp, (int)vap->va_mode, cred, p);
if (vap->va_flags != VNOVAL) {
if (cred->cr_uid != ip->i_uid &&
- (error = suser(cred, &u.u_acflag)))
+ (error = suser(cred, &p->p_acflag)))
return (error);
if (cred->cr_uid == 0) {
ip->i_flags = vap->va_flags;
* Change the mode on a file.
* Inode must be locked before calling.
*/
-chmod1(vp, mode, cred)
+static int
+ufs_chmod(vp, mode, cred, p)
register struct vnode *vp;
register int mode;
- struct ucred *cred;
+ register struct ucred *cred;
+ struct proc *p;
{
register struct inode *ip = VTOI(vp);
int error;
if (cred->cr_uid != ip->i_uid &&
- (error = suser(cred, &u.u_acflag)))
+ (error = suser(cred, &p->p_acflag)))
return (error);
- ip->i_mode &= ~07777;
if (cred->cr_uid) {
- if (vp->v_type != VDIR)
- mode &= ~ISVTX;
- if (!groupmember(ip->i_gid, cred))
- mode &= ~ISGID;
+ if (vp->v_type != VDIR && (mode & ISVTX))
+ return (EFTYPE);
+ if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
+ return (EPERM);
}
+ ip->i_mode &= ~07777;
ip->i_mode |= mode & 07777;
ip->i_flag |= ICHG;
if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0)
- xrele(vp);
+ (void) vnode_pager_uncache(vp);
return (0);
}
* Perform chown operation on inode ip;
* inode must be locked prior to call.
*/
-chown1(vp, uid, gid, cred)
+static int
+ufs_chown(vp, uid, gid, cred, p)
register struct vnode *vp;
- uid_t uid;
- gid_t gid;
+ u_int uid;
+ u_int gid;
struct ucred *cred;
+ struct proc *p;
{
register struct inode *ip = VTOI(vp);
+ uid_t ouid;
+ gid_t ogid;
+ int error = 0;
#ifdef QUOTA
- register long change;
+ register int i;
+ long change;
#endif
- int error;
if (uid == (u_short)VNOVAL)
uid = ip->i_uid;
*/
if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
!groupmember((gid_t)gid, cred)) &&
- (error = suser(cred, &u.u_acflag)))
+ (error = suser(cred, &p->p_acflag)))
return (error);
+ ouid = ip->i_uid;
+ ogid = ip->i_gid;
#ifdef QUOTA
- if (ip->i_uid == uid) /* this just speeds things a little */
- change = 0;
- else
- change = ip->i_blocks;
- (void) chkdq(ip, -change, 1);
- (void) chkiq(ip->i_dev, ip, ip->i_uid, 1);
- dqrele(ip->i_dquot);
+ if (error = getinoquota(ip))
+ return (error);
+ if (ouid == uid) {
+ dqrele(vp, ip->i_dquot[USRQUOTA]);
+ ip->i_dquot[USRQUOTA] = NODQUOT;
+ }
+ if (ogid == gid) {
+ dqrele(vp, ip->i_dquot[GRPQUOTA]);
+ ip->i_dquot[GRPQUOTA] = NODQUOT;
+ }
+ change = ip->i_blocks;
+ (void) chkdq(ip, -change, cred, CHOWN);
+ (void) chkiq(ip, -1, cred, CHOWN);
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dqrele(vp, ip->i_dquot[i]);
+ ip->i_dquot[i] = NODQUOT;
+ }
#endif
- if (ip->i_uid != uid && cred->cr_uid != 0)
- ip->i_mode &= ~ISUID;
- if (ip->i_gid != gid && cred->cr_uid != 0)
- ip->i_mode &= ~ISGID;
ip->i_uid = uid;
ip->i_gid = gid;
- ip->i_flag |= ICHG;
#ifdef QUOTA
- ip->i_dquot = inoquota(ip);
- (void) chkdq(ip, change, 1);
- (void) chkiq(ip->i_dev, (struct inode *)NULL, (uid_t)uid, 1);
- return (u.u_error); /* should == 0 ALWAYS !! */
-#else
- return (0);
-#endif
-}
-
-/*
- * Vnode op for reading.
- */
-/* ARGSUSED */
-ufs_read(vp, uio, ioflag, cred)
- struct vnode *vp;
- register struct uio *uio;
- int ioflag;
- struct ucred *cred;
-{
- register struct inode *ip = VTOI(vp);
- register struct fs *fs;
- struct buf *bp;
- daddr_t lbn, bn, rablock;
- int size, rasize, diff, error = 0;
- long n, on, type;
-
- if (uio->uio_rw != UIO_READ)
- panic("ufs_read mode");
- type = ip->i_mode & IFMT;
- if (type != IFDIR && type != IFREG && type != IFLNK)
- panic("ufs_read type");
- if (uio->uio_resid == 0)
- return (0);
- if (uio->uio_offset < 0)
- return (EINVAL);
- ip->i_flag |= IACC;
- fs = ip->i_fs;
- do {
- lbn = lblkno(fs, uio->uio_offset);
- on = blkoff(fs, uio->uio_offset);
- n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid);
- diff = ip->i_size - uio->uio_offset;
- if (diff <= 0)
- return (0);
- if (diff < n)
- n = diff;
- if (error = bmap(ip, lbn, &bn, &rablock, &rasize))
- return (error);
- size = blksize(fs, ip, lbn);
- if ((long)bn < 0) {
- bp = geteblk(size);
- clrbuf(bp);
- } else if (ip->i_lastr + 1 == lbn)
- error = breada(ip->i_devvp, bn, size, rablock, rasize,
- NOCRED, &bp);
- else
- error = bread(ip->i_devvp, bn, size, NOCRED, &bp);
- ip->i_lastr = lbn;
- n = MIN(n, size - bp->b_resid);
- if (error) {
- brelse(bp);
- return (error);
+ if ((error = getinoquota(ip)) == 0) {
+ if (ouid == uid) {
+ dqrele(vp, ip->i_dquot[USRQUOTA]);
+ ip->i_dquot[USRQUOTA] = NODQUOT;
+ }
+ if (ogid == gid) {
+ dqrele(vp, ip->i_dquot[GRPQUOTA]);
+ ip->i_dquot[GRPQUOTA] = NODQUOT;
+ }
+ if ((error = chkdq(ip, change, cred, CHOWN)) == 0) {
+ if ((error = chkiq(ip, 1, cred, CHOWN)) == 0)
+ goto good;
+ else
+ (void) chkdq(ip, -change, cred, CHOWN|FORCE);
+ }
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dqrele(vp, ip->i_dquot[i]);
+ ip->i_dquot[i] = NODQUOT;
}
- error = uiomove(bp->b_un.b_addr + on, (int)n, uio);
- if (n + on == fs->fs_bsize || uio->uio_offset == ip->i_size)
- bp->b_flags |= B_AGE;
- brelse(bp);
- } while (error == 0 && uio->uio_resid > 0 && n != 0);
- return (error);
-}
-
-/*
- * Vnode op for writing.
- */
-ufs_write(vp, uio, ioflag, cred)
- register struct vnode *vp;
- struct uio *uio;
- int ioflag;
- struct ucred *cred;
-{
- register struct inode *ip = VTOI(vp);
- register struct fs *fs;
- struct buf *bp;
- daddr_t lbn, bn;
- u_long osize;
- int i, n, on, flags;
- int count, size, resid, error = 0;
-
- if (uio->uio_rw != UIO_WRITE)
- panic("ufs_write mode");
- switch (vp->v_type) {
- case VREG:
- if (ioflag & IO_APPEND)
- uio->uio_offset = ip->i_size;
- /* fall through */
- case VLNK:
- break;
-
- case VDIR:
- if ((ioflag & IO_SYNC) == 0)
- panic("ufs_write nonsync dir write");
- break;
-
- default:
- panic("ufs_write type");
- }
- if (uio->uio_offset < 0)
- return (EINVAL);
- if (uio->uio_resid == 0)
- return (0);
- /*
- * Maybe this should be above the vnode op call, but so long as
- * file servers have no limits, i don't think it matters
- */
- if (vp->v_type == VREG &&
- uio->uio_offset + uio->uio_resid >
- u.u_rlimit[RLIMIT_FSIZE].rlim_cur) {
- psignal(u.u_procp, SIGXFSZ);
- return (EFBIG);
}
- resid = uio->uio_resid;
- osize = ip->i_size;
- fs = ip->i_fs;
- do {
- lbn = lblkno(fs, uio->uio_offset);
- on = blkoff(fs, uio->uio_offset);
- n = MIN((unsigned)(fs->fs_bsize - on), uio->uio_resid);
- if (n < fs->fs_bsize)
- flags = B_CLRBUF;
- else
- flags = 0;
- if (error = balloc(ip, lbn, (int)(on + n), &bn, flags))
- break;
- if (uio->uio_offset + n > ip->i_size)
- ip->i_size = uio->uio_offset + n;
- size = blksize(fs, ip, lbn);
- count = howmany(size, CLBYTES);
- for (i = 0; i < count; i++)
- munhash(ip->i_devvp, bn + i * CLBYTES / DEV_BSIZE);
- if (n == fs->fs_bsize)
- bp = getblk(ip->i_devvp, bn, size);
- else
- error = bread(ip->i_devvp, bn, size, NOCRED, &bp);
- n = MIN(n, size - bp->b_resid);
- if (error) {
- brelse(bp);
- break;
+ ip->i_uid = ouid;
+ ip->i_gid = ogid;
+ if (getinoquota(ip) == 0) {
+ if (ouid == uid) {
+ dqrele(vp, ip->i_dquot[USRQUOTA]);
+ ip->i_dquot[USRQUOTA] = NODQUOT;
}
- error = uiomove(bp->b_un.b_addr + on, n, uio);
- if (ioflag & IO_SYNC)
- (void) bwrite(bp);
- else if (n + on == fs->fs_bsize) {
- bp->b_flags |= B_AGE;
- bawrite(bp);
- } else
- bdwrite(bp);
- ip->i_flag |= IUPD|ICHG;
- if (cred->cr_uid != 0)
- ip->i_mode &= ~(ISUID|ISGID);
- } while (error == 0 && uio->uio_resid > 0 && n != 0);
- if (error && (ioflag & IO_UNIT)) {
- (void) itrunc(ip, osize);
- uio->uio_offset -= resid - uio->uio_resid;
- uio->uio_resid = resid;
+ if (ogid == gid) {
+ dqrele(vp, ip->i_dquot[GRPQUOTA]);
+ ip->i_dquot[GRPQUOTA] = NODQUOT;
+ }
+ (void) chkdq(ip, change, cred, FORCE|CHOWN);
+ (void) chkiq(ip, 1, cred, FORCE|CHOWN);
+ (void) getinoquota(ip);
}
return (error);
+good:
+ if (getinoquota(ip))
+ panic("chown: lost quota");
+#endif /* QUOTA */
+ if (ouid != uid || ogid != gid)
+ ip->i_flag |= ICHG;
+ if (ouid != uid && cred->cr_uid != 0)
+ ip->i_mode &= ~ISUID;
+ if (ogid != gid && cred->cr_uid != 0)
+ ip->i_mode &= ~ISGID;
+ return (0);
}
/* ARGSUSED */
-ufs_ioctl(vp, com, data, fflag, cred)
+int
+ufs_ioctl(vp, com, data, fflag, cred, p)
struct vnode *vp;
int com;
caddr_t data;
int fflag;
struct ucred *cred;
+ struct proc *p;
{
return (ENOTTY);
}
/* ARGSUSED */
-ufs_select(vp, which, cred)
+int
+ufs_select(vp, which, fflags, cred, p)
struct vnode *vp;
- int which;
+ int which, fflags;
struct ucred *cred;
+ struct proc *p;
{
- return (1); /* XXX */
+ /*
+ * We should really check to see if I/O is possible.
+ */
+ return (1);
}
/*
* NB Currently unsupported.
*/
/* ARGSUSED */
-ufs_mmap(vp, fflags, cred)
+int
+ufs_mmap(vp, fflags, cred, p)
struct vnode *vp;
int fflags;
struct ucred *cred;
+ struct proc *p;
{
return (EINVAL);
}
-/*
- * Synch an open file.
- */
-/* ARGSUSED */
-ufs_fsync(vp, fflags, cred, waitfor)
- struct vnode *vp;
- int fflags;
- struct ucred *cred;
- int waitfor;
-{
- struct inode *ip = VTOI(vp);
-
- if (fflags&FWRITE)
- ip->i_flag |= ICHG;
- return (syncip(ip, waitfor));
-}
-
/*
* Seek on a file
*
* Nothing to do, so just return.
*/
/* ARGSUSED */
+int
ufs_seek(vp, oldoff, newoff, cred)
struct vnode *vp;
off_t oldoff, newoff;
* Hard to avoid races here, especially
* in unlinking directories.
*/
-ufs_remove(ndp)
- struct nameidata *ndp;
+int
+ufs_remove(dvp, vp, cnp)
+ struct vnode *dvp, *vp;
+ struct componentname *cnp;
{
register struct inode *ip, *dp;
int error;
- ip = VTOI(ndp->ni_vp);
- dp = VTOI(ndp->ni_dvp);
- error = dirremove(ndp);
+ ip = VTOI(vp);
+ dp = VTOI(dvp);
+ error = ufs_dirremove(dvp, cnp);
if (!error) {
ip->i_nlink--;
ip->i_flag |= ICHG;
if (dp == ip)
vrele(ITOV(ip));
else
- iput(ip);
- iput(dp);
+ ufs_iput(ip);
+ ufs_iput(dp);
return (error);
}
/*
* link vnode call
*/
-ufs_link(vp, ndp)
- register struct vnode *vp;
- register struct nameidata *ndp;
+int
+ufs_link(tdvp, vp, cnp)
+ struct vnode *tdvp;
+ register struct vnode *vp; /* source vnode */
+ struct componentname *cnp;
{
- register struct inode *ip = VTOI(vp);
+ register struct inode *ip;
int error;
- if (ndp->ni_dvp != vp)
- ILOCK(ip);
- if (ip->i_nlink == LINK_MAX - 1) {
- error = EMLINK;
- goto out;
+#ifdef DIANOSTIC
+ if ((cnp->cn_flags & HASBUF) == 0)
+ panic("ufs_link: no name");
+#endif
+ ip = VTOI(vp);
+ if ((unsigned short)ip->i_nlink >= LINK_MAX) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ return (EMLINK);
}
+ if (tdvp != vp)
+ ILOCK(ip);
ip->i_nlink++;
ip->i_flag |= ICHG;
- error = iupdat(ip, &time, &time, 1);
+ error = VOP_UPDATE(vp, &time, &time, 1);
if (!error)
- error = direnter(ip, ndp);
-out:
- if (ndp->ni_dvp != vp)
+ error = ufs_direnter(ip, tdvp, cnp);
+ if (tdvp != vp)
IUNLOCK(ip);
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ vput(tdvp);
if (error) {
ip->i_nlink--;
ip->i_flag |= ICHG;
return (error);
}
+
+
+/*
+ * relookup - lookup a path name component
+ * Used by lookup to re-aquire things.
+ */
+int
+relookup(dvp, vpp, cnp)
+ struct vnode *dvp, **vpp;
+ struct componentname *cnp;
+{
+ register struct vnode *dp = 0; /* the directory we are searching */
+ struct vnode *tdp; /* saved dp */
+ struct mount *mp; /* mount table entry */
+ int docache; /* == 0 do not cache last component */
+ int wantparent; /* 1 => wantparent or lockparent flag */
+ int rdonly; /* lookup read-only flag bit */
+ char *cp; /* DEBUG: check name ptr/len */
+ int newhash; /* DEBUG: check name hash */
+ int error = 0;
+
+ /*
+ * Setup: break out flag bits into variables.
+ */
+ wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
+ docache = (cnp->cn_flags & NOCACHE) ^ NOCACHE;
+ if (cnp->cn_nameiop == DELETE ||
+ (wantparent && cnp->cn_nameiop != CREATE))
+ docache = 0;
+ rdonly = cnp->cn_flags & RDONLY;
+ cnp->cn_flags &= ~ISSYMLINK;
+ dp = dvp;
+ VOP_LOCK(dp);
+
+/* dirloop: */
+ /*
+ * Search a new directory.
+ *
+ * The cn_hash value is for use by vfs_cache.
+ * The last component of the filename is left accessible via
+ * cnp->cn_nameptr for callers that need the name. Callers needing
+ * the name set the SAVENAME flag. When done, they assume
+ * responsibility for freeing the pathname buffer.
+ */
+#ifdef NAMEI_DIAGNOSTIC
+ for (newhash = 0, cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++)
+ newhash += (unsigned char)*cp;
+ if (newhash != cnp->cn_hash)
+ panic("relookup: bad hash");
+ if (cnp->cn_namelen != cp - cnp->cn_nameptr)
+ panic ("relookup: bad len");
+ if (*cp != 0)
+ panic("relookup: not last component");
+ printf("{%s}: ", cnp->cn_nameptr);
+#endif
+
+ /*
+ * Check for degenerate name (e.g. / or "")
+ * which is a way of talking about a directory,
+ * e.g. like "/." or ".".
+ */
+ if (cnp->cn_nameptr[0] == '\0') {
+ if (cnp->cn_nameiop != LOOKUP || wantparent) {
+ error = EISDIR;
+ goto bad;
+ }
+ if (dp->v_type != VDIR) {
+ error = ENOTDIR;
+ goto bad;
+ }
+ if (!(cnp->cn_flags & LOCKLEAF))
+ VOP_UNLOCK(dp);
+ *vpp = dp;
+ if (cnp->cn_flags & SAVESTART)
+ panic("lookup: SAVESTART");
+ return (0);
+ }
+
+ if (cnp->cn_flags & ISDOTDOT)
+ panic ("relookup: lookup on dot-dot");
+
+ /*
+ * We now have a segment name to search for, and a directory to search.
+ */
+ if (error = VOP_LOOKUP(dp, vpp, cnp)) {
+#ifdef DIAGNOSTIC
+ if (*vpp != NULL)
+ panic("leaf should be empty");
+#endif
+ if (error != EJUSTRETURN)
+ goto bad;
+ /*
+ * If creating and at end of pathname, then can consider
+ * allowing file to be created.
+ */
+ if (rdonly || (dvp->v_mount->mnt_flag & MNT_RDONLY)) {
+ error = EROFS;
+ goto bad;
+ }
+ /* ASSERT(dvp == ndp->ni_startdir) */
+ if (cnp->cn_flags & SAVESTART)
+ VREF(dvp);
+ /*
+ * We return with ni_vp NULL to indicate that the entry
+ * doesn't currently exist, leaving a pointer to the
+ * (possibly locked) directory inode in ndp->ni_dvp.
+ */
+ return (0);
+ }
+ dp = *vpp;
+
+#ifdef DIAGNOSTIC
+ /*
+ * Check for symbolic link
+ */
+ if (dp->v_type == VLNK && (cnp->cn_flags & FOLLOW))
+ panic ("relookup: symlink found.\n");
+#endif
+
+nextname:
+ /*
+ * Check for read-only file systems.
+ */
+ if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) {
+ /*
+ * Disallow directory write attempts on read-only
+ * file systems.
+ */
+ if (rdonly || (dp->v_mount->mnt_flag & MNT_RDONLY) ||
+ (wantparent &&
+ (dvp->v_mount->mnt_flag & MNT_RDONLY))) {
+ error = EROFS;
+ goto bad2;
+ }
+ }
+ /* ASSERT(dvp == ndp->ni_startdir) */
+ if (cnp->cn_flags & SAVESTART)
+ VREF(dvp);
+
+ if (!wantparent)
+ vrele(dvp);
+ if ((cnp->cn_flags & LOCKLEAF) == 0)
+ VOP_UNLOCK(dp);
+ return (0);
+
+bad2:
+ if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN))
+ VOP_UNLOCK(dvp);
+ vrele(dvp);
+bad:
+ vput(dp);
+ *vpp = NULL;
+ return (error);
+}
+
+
/*
* Rename system call.
* rename("foo", "bar");
* is different from the source, patch the ".." entry in the
* directory.
*/
-ufs_rename(fndp, tndp)
- register struct nameidata *fndp, *tndp;
+int
+ufs_rename(fdvp, fvp, fcnp,
+ tdvp, tvp, tcnp)
+ struct vnode *fdvp, *fvp;
+ struct componentname *fcnp;
+ struct vnode *tdvp, *tvp;
+ struct componentname *tcnp;
{
register struct inode *ip, *xp, *dp;
struct dirtemplate dirbuf;
int doingdirectory = 0, oldparent = 0, newparent = 0;
int error = 0;
+ int fdvpneedsrele = 1, tdvpneedsrele = 1;
- dp = VTOI(fndp->ni_dvp);
- ip = VTOI(fndp->ni_vp);
+#ifdef DIANOSTIC
+ if ((tcnp->cn_flags & HASBUF) == 0 ||
+ (fcnp->cn_flags & HASBUF) == 0)
+ panic("ufs_rename: no name");
+#endif
+ dp = VTOI(fdvp);
+ ip = VTOI(fvp);
+ /*
+ * Check if just deleting a link name.
+ */
+ if (fvp == tvp) {
+ VOP_ABORTOP(tdvp, tcnp);
+ vput(tdvp);
+ vput(tvp);
+ vrele(fdvp);
+ if ((ip->i_mode&IFMT) == IFDIR) {
+ VOP_ABORTOP(fdvp, fcnp);
+ vrele(fvp);
+ return (EINVAL);
+ }
+ doingdirectory = 0;
+ goto unlinkit;
+ }
ILOCK(ip);
if ((ip->i_mode&IFMT) == IFDIR) {
- register struct direct *d = &fndp->ni_dent;
-
/*
* Avoid ".", "..", and aliases of "." for obvious reasons.
*/
- if ((d->d_namlen == 1 && d->d_name[0] == '.') || dp == ip ||
- fndp->ni_isdotdot || (ip->i_flag & IRENAME)) {
- IUNLOCK(ip);
- ufs_abortop(fndp);
- ufs_abortop(tndp);
+ if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
+ dp == ip || (fcnp->cn_flags&ISDOTDOT) || (ip->i_flag & IRENAME)) {
+ VOP_ABORTOP(tdvp, tcnp);
+ vput(tdvp);
+ if (tvp)
+ vput(tvp);
+ VOP_ABORTOP(fdvp, fcnp);
+ vrele(fdvp);
+ vput(fvp);
return (EINVAL);
}
ip->i_flag |= IRENAME;
oldparent = dp->i_number;
doingdirectory++;
}
- vrele(fndp->ni_dvp);
+ vrele(fdvp);
/*
* 1) Bump link count while we're moving stuff
*/
ip->i_nlink++;
ip->i_flag |= ICHG;
- error = iupdat(ip, &time, &time, 1);
+ error = VOP_UPDATE(fvp, &time, &time, 1);
IUNLOCK(ip);
/*
* When the target exists, both the directory
* and target vnodes are returned locked.
*/
- dp = VTOI(tndp->ni_dvp);
+ dp = VTOI(tdvp);
xp = NULL;
- if (tndp->ni_vp)
- xp = VTOI(tndp->ni_vp);
+ if (tvp)
+ xp = VTOI(tvp);
/*
* If ".." must be changed (ie the directory gets a new
* parent) then the source directory must not be in the
if (oldparent != dp->i_number)
newparent = dp->i_number;
if (doingdirectory && newparent) {
- if (error = iaccess(ip, IWRITE, tndp->ni_cred))
+ VOP_LOCK(fvp);
+ error = ufs_access(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc);
+ VOP_UNLOCK(fvp);
+ if (error)
goto bad;
- tndp->ni_nameiop = RENAME | LOCKPARENT | LOCKLEAF | NOCACHE;
- do {
- dp = VTOI(tndp->ni_dvp);
- if (xp != NULL)
- iput(xp);
- if (error = checkpath(ip, dp, tndp->ni_cred))
- goto out;
- if (error = namei(tndp))
- goto out;
- xp = NULL;
- if (tndp->ni_vp)
- xp = VTOI(tndp->ni_vp);
- } while (dp != VTOI(tndp->ni_dvp));
+ if (xp != NULL)
+ ufs_iput(xp);
+ if (error = ufs_checkpath(ip, dp, tcnp->cn_cred))
+ goto out;
+ if ((tcnp->cn_flags & SAVESTART) == 0)
+ panic("ufs_rename: lost to startdir");
+ p->p_spare[1]--;
+ if (error = relookup(tdvp, &tvp, tcnp))
+ goto out;
+ dp = VTOI(tdvp);
+ xp = NULL;
+ if (tvp)
+ xp = VTOI(tvp);
}
/*
* 2) If target doesn't exist, link the target
* parent we don't fool with the link count.
*/
if (doingdirectory && newparent) {
+ if ((unsigned short)dp->i_nlink >= LINK_MAX) {
+ error = EMLINK;
+ goto bad;
+ }
dp->i_nlink++;
dp->i_flag |= ICHG;
- error = iupdat(dp, &time, &time, 1);
+ if (error = VOP_UPDATE(ITOV(dp), &time, &time, 1))
+ goto bad;
}
- if (error = direnter(ip, tndp))
- goto out;
+ if (error = ufs_direnter(ip, tdvp, tcnp)) {
+ if (doingdirectory && newparent) {
+ dp->i_nlink--;
+ dp->i_flag |= ICHG;
+ (void)VOP_UPDATE(ITOV(dp), &time, &time, 1);
+ }
+ goto bad;
+ }
+ ufs_iput(dp);
} else {
if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
panic("rename: EXDEV");
* otherwise the destination may not be changed (except by
* root). This implements append-only directories.
*/
- if ((dp->i_mode & ISVTX) && tndp->ni_cred->cr_uid != 0 &&
- tndp->ni_cred->cr_uid != dp->i_uid &&
- xp->i_uid != tndp->ni_cred->cr_uid) {
+ if ((dp->i_mode & ISVTX) && tcnp->cn_cred->cr_uid != 0 &&
+ tcnp->cn_cred->cr_uid != dp->i_uid &&
+ xp->i_uid != tcnp->cn_cred->cr_uid) {
error = EPERM;
goto bad;
}
/*
- * Target must be empty if a directory
- * and have no links to it.
- * Also, insure source and target are
- * compatible (both directories, or both
- * not directories).
+ * Target must be empty if a directory and have no links
+ * to it. Also, ensure source and target are compatible
+ * (both directories, or both not directories).
*/
if ((xp->i_mode&IFMT) == IFDIR) {
- if (!dirempty(xp, dp->i_number, tndp->ni_cred) ||
+ if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
xp->i_nlink > 2) {
error = ENOTEMPTY;
goto bad;
error = EISDIR;
goto bad;
}
- if (error = dirrewrite(dp, ip, tndp))
+ if (error = ufs_dirrewrite(dp, ip, tcnp))
goto bad;
- vput(ITOV(dp));
+ /*
+ * If the target directory is in the same
+ * directory as the source directory,
+ * decrement the link count on the parent
+ * of the target directory.
+ */
+ if (doingdirectory && !newparent) {
+ dp->i_nlink--;
+ dp->i_flag |= ICHG;
+ }
+ ufs_iput(dp);
/*
* Adjust the link count of the target to
* reflect the dirrewrite above. If this is
if (doingdirectory) {
if (--xp->i_nlink != 0)
panic("rename: linked directory");
- error = itrunc(xp, (u_long)0);
+ error = VOP_TRUNCATE(ITOV(xp), (u_long)0, IO_SYNC);
}
xp->i_flag |= ICHG;
- iput(xp);
+ ufs_iput(xp);
xp = NULL;
}
/*
* 3) Unlink the source.
*/
- fndp->ni_nameiop = DELETE | LOCKPARENT | LOCKLEAF;
- (void)namei(fndp);
- if (fndp->ni_vp != NULL) {
- xp = VTOI(fndp->ni_vp);
- dp = VTOI(fndp->ni_dvp);
+unlinkit:
+ fcnp->cn_flags &= ~MODMASK;
+ fcnp->cn_flags |= LOCKPARENT | LOCKLEAF;
+ if ((fcnp->cn_flags & SAVESTART) == 0)
+ panic("ufs_rename: lost from startdir");
+ p->p_spare[1]--;
+ (void) relookup(fdvp, &fvp, fcnp);
+ if (fvp != NULL) {
+ xp = VTOI(fvp);
+ dp = VTOI(fdvp);
} else {
- if (fndp->ni_dvp != NULL)
- vput(fndp->ni_dvp);
- xp = NULL;
- dp = NULL;
+ /*
+ * From name has disappeared.
+ */
+ if (doingdirectory)
+ panic("rename: lost dir entry");
+ vrele(ITOV(ip));
+ return (0);
}
/*
* Ensure that the directory entry still exists and has not
error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf,
sizeof (struct dirtemplate), (off_t)0,
UIO_SYSSPACE, IO_NODELOCKED,
- tndp->ni_cred, (int *)0);
+ tcnp->cn_cred, (int *)0, (struct proc *)0);
if (error == 0) {
if (dirbuf.dotdot_namlen != 2 ||
dirbuf.dotdot_name[0] != '.' ||
dirbuf.dotdot_name[1] != '.') {
- dirbad(xp, 12, "rename: mangled dir");
+ ufs_dirbad(xp, (doff_t)12,
+ "rename: mangled dir");
} else {
dirbuf.dotdot_ino = newparent;
(void) vn_rdwr(UIO_WRITE, ITOV(xp),
sizeof (struct dirtemplate),
(off_t)0, UIO_SYSSPACE,
IO_NODELOCKED|IO_SYNC,
- tndp->ni_cred, (int *)0);
+ tcnp->cn_cred, (int *)0,
+ (struct proc *)0);
cache_purge(ITOV(dp));
}
}
}
- error = dirremove(fndp);
+ error = ufs_dirremove(fdvp, fcnp);
if (!error) {
xp->i_nlink--;
xp->i_flag |= ICHG;
/*
* A virgin directory (no blushing please).
*/
-struct dirtemplate mastertemplate = {
+static struct dirtemplate mastertemplate = {
0, 12, 1, ".",
0, DIRBLKSIZ - 12, 2, ".."
};
/*
* Mkdir system call
*/
-ufs_mkdir(ndp, vap)
- struct nameidata *ndp;
+int
+ufs_mkdir(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
struct vattr *vap;
{
register struct inode *ip, *dp;
- struct inode *tip;
- struct vnode *dvp;
+ struct vnode *tvp;
struct dirtemplate dirtemplate;
int error;
int dmode;
- dvp = ndp->ni_dvp;
+#ifdef DIANOSTIC
+ if ((cnp->cn_flags & HASBUF) == 0)
+ panic("ufs_mkdir: no name");
+#endif
dp = VTOI(dvp);
+ if ((unsigned short)dp->i_nlink >= LINK_MAX) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(dp);
+ return (EMLINK);
+ }
dmode = vap->va_mode&0777;
dmode |= IFDIR;
/*
- * Must simulate part of maknode here
- * in order to acquire the inode, but
- * not have it entered in the parent
- * directory. The entry is made later
- * after writing "." and ".." entries out.
+ * Must simulate part of maknode here to acquire the inode, but
+ * not have it entered in the parent directory. The entry is made
+ * later after writing "." and ".." entries.
*/
- error = ialloc(dp, dirpref(dp->i_fs), dmode, &tip);
- if (error) {
- iput(dp);
+ if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(dp);
return (error);
}
- ip = tip;
+ ip = VTOI(tvp);
+ ip->i_uid = cnp->cn_cred->cr_uid;
+ ip->i_gid = dp->i_gid;
#ifdef QUOTA
- if (ip->i_dquot != NODQUOT)
- panic("mkdir: dquot");
+ if ((error = getinoquota(ip)) ||
+ (error = chkiq(ip, 1, cnp->cn_cred, 0))) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ VOP_VFREE(tvp, ip->i_number, dmode);
+ ufs_iput(ip);
+ ufs_iput(dp);
+ return (error);
+ }
#endif
ip->i_flag |= IACC|IUPD|ICHG;
ip->i_mode = dmode;
ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */
ip->i_nlink = 2;
- ip->i_uid = ndp->ni_cred->cr_uid;
- ip->i_gid = dp->i_gid;
-#ifdef QUOTA
- ip->i_dquot = inoquota(ip);
-#endif
- error = iupdat(ip, &time, &time, 1);
+ error = VOP_UPDATE(ITOV(ip), &time, &time, 1);
/*
* Bump link count in parent directory
*/
dp->i_nlink++;
dp->i_flag |= ICHG;
- error = iupdat(dp, &time, &time, 1);
+ if (error = VOP_UPDATE(ITOV(dp), &time, &time, 1))
+ goto bad;
- /*
- * Initialize directory with "."
- * and ".." from static template.
- */
+ /* Initialize directory with "." and ".." from static template. */
dirtemplate = mastertemplate;
dirtemplate.dot_ino = ip->i_number;
dirtemplate.dotdot_ino = dp->i_number;
error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate,
- sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
- IO_NODELOCKED|IO_SYNC, ndp->ni_cred, (int *)0);
+ sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
+ IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0);
if (error) {
dp->i_nlink--;
dp->i_flag |= ICHG;
goto bad;
}
- if (DIRBLKSIZ > dp->i_fs->fs_fsize)
- panic("mkdir: blksize"); /* XXX - should grow w/balloc() */
- else
+ if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
+ panic("ufs_mkdir: blksize"); /* XXX should grow with balloc() */
+ else {
ip->i_size = DIRBLKSIZ;
- /*
- * Directory all set up, now
- * install the entry for it in
- * the parent directory.
- */
- error = direnter(ip, ndp);
- dp = NULL;
- if (error) {
- ndp->ni_nameiop = LOOKUP | NOCACHE;
- error = namei(ndp);
- if (!error) {
- dp = VTOI(ndp->ni_vp);
- dp->i_nlink--;
- dp->i_flag |= ICHG;
- }
+ ip->i_flag |= ICHG;
+ }
+
+ /* Directory set up, now install it's entry in the parent directory. */
+ if (error = ufs_direnter(ip, dvp, cnp)) {
+ dp->i_nlink--;
+ dp->i_flag |= ICHG;
}
bad:
/*
- * No need to do an explicit itrunc here,
- * vrele will do this for us because we set
- * the link count to 0.
+ * No need to do an explicit VOP_TRUNCATE here, vrele will do this
+ * for us because we set the link count to 0.
*/
if (error) {
ip->i_nlink = 0;
ip->i_flag |= ICHG;
- iput(ip);
+ ufs_iput(ip);
} else
- ndp->ni_vp = ITOV(ip);
- if (dp)
- iput(dp);
+ *vpp = ITOV(ip);
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(dp);
return (error);
}
/*
* Rmdir system call.
*/
-ufs_rmdir(ndp)
- register struct nameidata *ndp;
+int
+ufs_rmdir(dvp, vp, cnp)
+ struct vnode *dvp;
+ struct vnode *vp;
+ struct componentname *cnp;
{
register struct inode *ip, *dp;
- int error = 0;
+ int error;
- ip = VTOI(ndp->ni_vp);
- dp = VTOI(ndp->ni_dvp);
+ ip = VTOI(vp);
+ dp = VTOI(dvp);
/*
* No rmdir "." please.
*/
if (dp == ip) {
- vrele(ITOV(dp));
- iput(ip);
+ vrele(dvp);
+ ufs_iput(ip);
return (EINVAL);
}
/*
* the current directory and thus be
* non-empty.)
*/
- if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number, ndp->ni_cred)) {
+ error = 0;
+ if (ip->i_nlink != 2 ||
+ !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) {
error = ENOTEMPTY;
goto out;
}
* inode. If we crash in between, the directory
* will be reattached to lost+found,
*/
- if (error = dirremove(ndp))
+ if (error = ufs_dirremove(dvp, cnp))
goto out;
dp->i_nlink--;
dp->i_flag |= ICHG;
- cache_purge(ITOV(dp));
- iput(dp);
- ndp->ni_dvp = NULL;
+ cache_purge(dvp);
+ ufs_iput(dp);
+ dvp = NULL;
/*
* Truncate inode. The only stuff left
* in the directory is "." and "..". The
* worry about them later.
*/
ip->i_nlink -= 2;
- error = itrunc(ip, (u_long)0);
+ error = VOP_TRUNCATE(vp, (u_long)0, IO_SYNC);
cache_purge(ITOV(ip));
out:
- if (ndp->ni_dvp)
- iput(dp);
- iput(ip);
+ if (dvp)
+ ufs_iput(dp);
+ ufs_iput(ip);
return (error);
}
/*
* symlink -- make a symbolic link
*/
-ufs_symlink(ndp, vap, target)
- struct nameidata *ndp;
+int
+ufs_symlink(dvp, vpp, cnp, vap, target)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
struct vattr *vap;
char *target;
{
- struct inode *ip;
int error;
- error = maknode(IFLNK | vap->va_mode, ndp, &ip);
- if (error)
+ if (error = ufs_makeinode(IFLNK | vap->va_mode, dvp, vpp, cnp))
return (error);
- error = vn_rdwr(UIO_WRITE, ITOV(ip), target, strlen(target), (off_t)0,
- UIO_SYSSPACE, IO_NODELOCKED, ndp->ni_cred, (int *)0);
- iput(ip);
+ error = vn_rdwr(UIO_WRITE, *vpp, target, strlen(target), (off_t)0,
+ UIO_SYSSPACE, IO_NODELOCKED, cnp->cn_cred, (int *)0,
+ (struct proc *)0);
+ vput(*vpp);
return (error);
}
/*
- * Vnode op for read and write
+ * Vnode op for reading directories.
+ *
+ * The routine below assumes that the on-disk format of a directory
+ * is the same as that defined by <sys/dirent.h>. If the on-disk
+ * format changes, then it will be necessary to do a conversion
+ * from the on-disk format that read returns to the format defined
+ * by <sys/dirent.h>.
*/
-ufs_readdir(vp, uio, cred)
+int
+ufs_readdir(vp, uio, cred, eofflagp)
struct vnode *vp;
register struct uio *uio;
struct ucred *cred;
+ int *eofflagp;
{
int count, lost, error;
return (EINVAL);
uio->uio_resid = count;
uio->uio_iov->iov_len = count;
- error = ufs_read(vp, uio, 0, cred);
+ error = VOP_READ(vp, uio, 0, cred);
uio->uio_resid += lost;
+ if ((VTOI(vp)->i_size - uio->uio_offset) <= 0)
+ *eofflagp = 1;
+ else
+ *eofflagp = 0;
return (error);
}
/*
* Return target name of a symbolic link
*/
+int
ufs_readlink(vp, uiop, cred)
struct vnode *vp;
struct uio *uiop;
struct ucred *cred;
{
- return (ufs_read(vp, uiop, 0, cred));
+ return (VOP_READ(vp, uiop, 0, cred));
}
/*
* Ufs abort op, called after namei() when a CREATE/DELETE isn't actually
- * done. Iff ni_vp/ni_dvp not null and locked, unlock.
+ * done. If a buffer has been saved in anticipation of a CREATE, delete it.
*/
-ufs_abortop(ndp)
- register struct nameidata *ndp;
+/* ARGSUSED */
+int
+ufs_abortop(dvp, cnp)
+ struct vnode *dvp;
+ struct componentname *cnp;
{
- register struct inode *ip;
-
- if (ndp->ni_vp) {
- ip = VTOI(ndp->ni_vp);
- if (ip->i_flag & ILOCKED)
- IUNLOCK(ip);
- vrele(ndp->ni_vp);
- }
- if (ndp->ni_dvp) {
- ip = VTOI(ndp->ni_dvp);
- if (ip->i_flag & ILOCKED)
- IUNLOCK(ip);
- vrele(ndp->ni_dvp);
- }
- return;
+ if ((cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF)
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ return (0);
}
+/*
+ * Lock an inode.
+ */
+int
ufs_lock(vp)
struct vnode *vp;
{
return (0);
}
+/*
+ * Unlock an inode.
+ */
+int
ufs_unlock(vp)
struct vnode *vp;
{
}
/*
- * Get access to bmap
+ * Check for a locked inode.
*/
-ufs_bmap(vp, bn, vpp, bnp)
+int
+ufs_islocked(vp)
struct vnode *vp;
- daddr_t bn;
- struct vnode **vpp;
- daddr_t *bnp;
{
- struct inode *ip = VTOI(vp);
- if (vpp != NULL)
- *vpp = ip->i_devvp;
- if (bnp == NULL)
- return (0);
- return (bmap(ip, bn, bnp, (daddr_t *)0, (int *)0));
+ if (VTOI(vp)->i_flag & ILOCKED)
+ return (1);
+ return (0);
}
/*
- * Just call the device strategy routine
+ * Calculate the logical to physical mapping if not done already,
+ * then call the device strategy routine.
*/
+int
ufs_strategy(bp)
register struct buf *bp;
{
- (*bdevsw[major(bp->b_dev)].d_strategy)(bp);
+ register struct inode *ip;
+ struct vnode *vp;
+ int error;
+
+ ip = VTOI(bp->b_vp);
+ if (bp->b_vp->v_type == VBLK || bp->b_vp->v_type == VCHR)
+ panic("ufs_strategy: spec");
+ if (bp->b_blkno == bp->b_lblkno) {
+ if (error =
+ VOP_BMAP(bp->b_vp, bp->b_lblkno, NULL, &bp->b_blkno)) {
+ bp->b_error = error;
+ bp->b_flags |= B_ERROR;
+ biodone(bp);
+ return (error);
+ }
+ if ((long)bp->b_blkno == -1)
+ clrbuf(bp);
+ }
+ if ((long)bp->b_blkno == -1) {
+ biodone(bp);
+ return (0);
+ }
+ vp = ip->i_devvp;
+ bp->b_dev = vp->v_rdev;
+ (vp->v_op->vop_strategy)(bp);
+ return (0);
+}
+
+/*
+ * Print out the contents of an inode.
+ */
+int
+ufs_print(vp)
+ struct vnode *vp;
+{
+ register struct inode *ip = VTOI(vp);
+
+ printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number,
+ major(ip->i_dev), minor(ip->i_dev));
+#ifdef FIFO
+ if (vp->v_type == VFIFO)
+ fifo_printinfo(vp);
+#endif /* FIFO */
+ printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : "");
+ if (ip->i_lockholder == 0)
+ return (0);
+ printf("\towner pid %d", ip->i_lockholder);
+ if (ip->i_lockwaiter)
+ printf(" waiting pid %d", ip->i_lockwaiter);
+ printf("\n");
return (0);
}
/*
* Read wrapper for special devices.
*/
+int
ufsspec_read(vp, uio, ioflag, cred)
struct vnode *vp;
struct uio *uio;
/*
* Write wrapper for special devices.
*/
+int
ufsspec_write(vp, uio, ioflag, cred)
struct vnode *vp;
struct uio *uio;
*
* Update the times on the inode then do device close.
*/
-ufsspec_close(vp, fflag, cred)
+int
+ufsspec_close(vp, fflag, cred, p)
struct vnode *vp;
int fflag;
struct ucred *cred;
+ struct proc *p;
{
register struct inode *ip = VTOI(vp);
- if (vp->v_count > 1 && !(ip->i_flag & ILOCKED))
+ if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED))
ITIMES(ip, &time, &time);
- return (spec_close(vp, fflag, cred));
+ return (spec_close(vp, fflag, cred, p));
}
+#ifdef FIFO
/*
- * Make a new file.
+ * Read wrapper for fifo's
*/
-maknode(mode, ndp, ipp)
- int mode;
- register struct nameidata *ndp;
- struct inode **ipp;
+int
+ufsfifo_read(vp, uio, ioflag, cred)
+ struct vnode *vp;
+ struct uio *uio;
+ int ioflag;
+ struct ucred *cred;
{
- register struct inode *ip;
- struct inode *tip;
- register struct inode *pdir = VTOI(ndp->ni_dvp);
- ino_t ipref;
+
+ /*
+ * Set access flag.
+ */
+ VTOI(vp)->i_flag |= IACC;
+ return (fifo_read(vp, uio, ioflag, cred));
+}
+
+/*
+ * Write wrapper for fifo's.
+ */
+int
+ufsfifo_write(vp, uio, ioflag, cred)
+ struct vnode *vp;
+ struct uio *uio;
+ int ioflag;
+ struct ucred *cred;
+{
+
+ /*
+ * Set update and change flags.
+ */
+ VTOI(vp)->i_flag |= IUPD|ICHG;
+ return (fifo_write(vp, uio, ioflag, cred));
+}
+
+/*
+ * Close wrapper for fifo's.
+ *
+ * Update the times on the inode then do device close.
+ */
+ufsfifo_close(vp, fflag, cred, p)
+ struct vnode *vp;
+ int fflag;
+ struct ucred *cred;
+ struct proc *p;
+{
+ register struct inode *ip = VTOI(vp);
+
+ if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED))
+ ITIMES(ip, &time, &time);
+ return (fifo_close(vp, fflag, cred, p));
+}
+#endif /* FIFO */
+
+/*
+ * Advisory record locking support
+ */
+int
+ufs_advlock(vp, id, op, fl, flags)
+ struct vnode *vp;
+ caddr_t id;
+ int op;
+ register struct flock *fl;
+ int flags;
+{
+ register struct inode *ip = VTOI(vp);
+ register struct lockf *lock;
+ off_t start, end;
int error;
- *ipp = 0;
- if ((mode & IFMT) == IFDIR)
- ipref = dirpref(pdir->i_fs);
+ /*
+ * Avoid the common case of unlocking when inode has no locks.
+ */
+ if (ip->i_lockf == (struct lockf *)0) {
+ if (op != F_SETLK) {
+ fl->l_type = F_UNLCK;
+ return (0);
+ }
+ }
+ /*
+ * Convert the flock structure into a start and end.
+ */
+ switch (fl->l_whence) {
+
+ case SEEK_SET:
+ case SEEK_CUR:
+ /*
+ * Caller is responsible for adding any necessary offset
+ * when SEEK_CUR is used.
+ */
+ start = fl->l_start;
+ break;
+
+ case SEEK_END:
+ start = ip->i_size + fl->l_start;
+ break;
+
+ default:
+ return (EINVAL);
+ }
+ if (start < 0)
+ return (EINVAL);
+ if (fl->l_len == 0)
+ end = -1;
else
- ipref = pdir->i_number;
- error = ialloc(pdir, ipref, mode, &tip);
- if (error) {
- iput(pdir);
+ end = start + fl->l_len - 1;
+ /*
+ * Create the lockf structure
+ */
+ MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK);
+ lock->lf_start = start;
+ lock->lf_end = end;
+ lock->lf_id = id;
+ lock->lf_inode = ip;
+ lock->lf_type = fl->l_type;
+ lock->lf_next = (struct lockf *)0;
+ lock->lf_block = (struct lockf *)0;
+ lock->lf_flags = flags;
+ /*
+ * Do the requested operation.
+ */
+ switch(op) {
+ case F_SETLK:
+ return (lf_setlock(lock));
+
+ case F_UNLCK:
+ error = lf_clearlock(lock);
+ FREE(lock, M_LOCKF);
return (error);
+
+ case F_GETLK:
+ error = lf_getlock(lock, fl);
+ FREE(lock, M_LOCKF);
+ return (error);
+
+ default:
+ free(lock, M_LOCKF);
+ return (EINVAL);
}
- ip = tip;
-#ifdef QUOTA
- if (ip->i_dquot != NODQUOT)
- panic("maknode: dquot");
+ /* NOTREACHED */
+}
+
+/*
+ * Initialize the vnode associated with a new inode, handle aliased
+ * vnodes.
+ */
+int
+ufs_vinit(mntp, specops, fifoops, vpp)
+ struct mount *mntp;
+ struct vnodeops *specops, *fifoops;
+ struct vnode **vpp;
+{
+ struct inode *ip, *nip;
+ struct vnode *vp, *nvp;
+ extern struct vnodeops spec_vnodeops;
+
+ vp = *vpp;
+ ip = VTOI(vp);
+ switch(vp->v_type = IFTOVT(ip->i_mode)) {
+ case VCHR:
+ case VBLK:
+ vp->v_op = specops;
+ if (nvp = checkalias(vp, ip->i_rdev, mntp)) {
+ /*
+ * Discard unneeded vnode, but save its inode.
+ */
+ remque(ip);
+ IUNLOCK(ip);
+ nvp->v_data = vp->v_data;
+ vp->v_data = NULL;
+ vp->v_op = &spec_vnodeops;
+ vrele(vp);
+ vgone(vp);
+ /*
+ * Reinitialize aliased inode.
+ */
+ vp = nvp;
+ ip->i_vnode = vp;
+ ufs_ihashins(ip);
+ }
+ break;
+ case VFIFO:
+#ifdef FIFO
+ vp->v_op = fifoops;
+ break;
+#else
+ return (EOPNOTSUPP);
#endif
- ip->i_flag |= IACC|IUPD|ICHG;
+ }
+ if (ip->i_number == ROOTINO)
+ vp->v_flag |= VROOT;
+ /*
+ * Initialize modrev times
+ */
+ SETHIGH(ip->i_modrev, mono_time.tv_sec);
+ SETLOW(ip->i_modrev, mono_time.tv_usec * 4294);
+ *vpp = vp;
+ return (0);
+}
+
+/*
+ * Allocate a new inode.
+ */
+int
+ufs_makeinode(mode, dvp, vpp, cnp)
+ int mode;
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
+{
+ register struct inode *ip, *pdir;
+ struct vnode *tvp;
+ int error;
+
+ pdir = VTOI(dvp);
+#ifdef DIANOSTIC
+ if ((cnp->cn_flags & HASBUF) == 0)
+ panic("ufs_makeinode: no name");
+#endif
+ *vpp = NULL;
if ((mode & IFMT) == 0)
mode |= IFREG;
- ip->i_mode = mode;
- ITOV(ip)->v_type = IFTOVT(mode); /* Rest init'd in iget() */
- ip->i_nlink = 1;
- ip->i_uid = ndp->ni_cred->cr_uid;
+
+ if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(pdir);
+ return (error);
+ }
+ ip = VTOI(tvp);
+ ip->i_uid = cnp->cn_cred->cr_uid;
ip->i_gid = pdir->i_gid;
- if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, ndp->ni_cred) &&
- suser(ndp->ni_cred, NULL))
- ip->i_mode &= ~ISGID;
#ifdef QUOTA
- ip->i_dquot = inoquota(ip);
+ if ((error = getinoquota(ip)) ||
+ (error = chkiq(ip, 1, cnp->cn_cred, 0))) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ VOP_VFREE(tvp, ip->i_number, mode);
+ ufs_iput(ip);
+ ufs_iput(pdir);
+ return (error);
+ }
#endif
+ ip->i_flag |= IACC|IUPD|ICHG;
+ ip->i_mode = mode;
+ tvp->v_type = IFTOVT(mode); /* Rest init'd in iget() */
+ ip->i_nlink = 1;
+ if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
+ suser(cnp->cn_cred, NULL))
+ ip->i_mode &= ~ISGID;
/*
* Make sure inode goes to disk before directory entry.
*/
- if ((error = iupdat(ip, &time, &time, 1)) ||
- (error = direnter(ip, ndp))) {
- /*
- * Write error occurred trying to update the inode
- * or the directory so must deallocate the inode.
- */
- ip->i_nlink = 0;
- ip->i_flag |= ICHG;
- iput(ip);
- return (error);
- }
- *ipp = ip;
+ if (error = VOP_UPDATE(tvp, &time, &time, 1))
+ goto bad;
+ if (error = ufs_direnter(ip, dvp, cnp))
+ goto bad;
+ if ((cnp->cn_flags & SAVESTART) == 0)
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(pdir);
+ *vpp = tvp;
return (0);
+
+bad:
+ /*
+ * Write error occurred trying to update the inode
+ * or the directory so must deallocate the inode.
+ */
+ free(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(pdir);
+ ip->i_nlink = 0;
+ ip->i_flag |= ICHG;
+ ufs_iput(ip);
+ return (error);
}