/*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
+ * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
+ * All rights reserved.
*
- * @(#)ufs_vnops.c 7.1 (Berkeley) %G%
+ * %sccs.include.redist.c%
+ *
+ * @(#)ufs_vnops.c 7.75 (Berkeley) %G%
*/
-#include "param.h"
-#include "systm.h"
-#include "dir.h"
-#include "user.h"
-#include "kernel.h"
-#include "file.h"
-#include "stat.h"
-#include "inode.h"
-#include "fs.h"
-#include "buf.h"
-#include "proc.h"
-#include "quota.h"
-#include "uio.h"
-#include "socket.h"
-#include "socketvar.h"
-#include "mount.h"
-
-extern struct fileops inodeops;
-struct file *getinode();
-
-/*
- * Change current working directory (``.'').
- */
-chdir()
-{
+#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 proc *));
+int ufs_chown __P((struct vnode *, u_int, u_int, struct proc *));
+
+enum vtype iftovt_tab[16] = {
+ VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON,
+ VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD,
+};
+int vttoif_tab[9] = {
+ 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFIFO, IFMT,
+};
- chdirec(&u.u_cdir);
+#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 */
/*
- * Change notion of root (``/'') directory.
+ * Create a regular file
*/
-chroot()
+int
+ufs_create(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
+ struct vattr *vap;
{
+ int error;
- if (suser())
- chdirec(&u.u_rdir);
+ if (error =
+ ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), dvp, vpp, cnp))
+ return (error);
+ return (0);
}
/*
- * Common routine for chroot and chdir.
+ * Mknod vnode call
*/
-chdirec(ipp)
- register struct inode **ipp;
+/* ARGSUSED */
+int
+ufs_mknod(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
+ struct vattr *vap;
{
register struct inode *ip;
- struct a {
- char *fname;
- } *uap = (struct a *)u.u_ap;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = LOOKUP | FOLLOW;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- if ((ip->i_mode&IFMT) != IFDIR) {
- u.u_error = ENOTDIR;
- goto bad;
- }
- if (access(ip, IEXEC))
- goto bad;
- IUNLOCK(ip);
- if (*ipp)
- irele(*ipp);
- *ipp = ip;
- return;
+ int error;
-bad:
- iput(ip);
+ if (error =
+ ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), dvp, vpp, cnp))
+ return (error);
+ 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;
+ }
+ /*
+ * 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.
+ */
+ vput(*vpp);
+ (*vpp)->v_type = VNON;
+ vgone(*vpp);
+ *vpp = 0;
+ return (0);
}
/*
- * Open system call.
+ * Open called.
+ *
+ * Nothing to do.
*/
-open()
+/* ARGSUSED */
+int
+ufs_open(vp, mode, cred, p)
+ struct vnode *vp;
+ int mode;
+ struct ucred *cred;
+ struct proc *p;
{
- struct a {
- char *fname;
- int mode;
- int crtmode;
- } *uap = (struct a *) u.u_ap;
- copen(uap->mode-FOPEN, uap->crtmode, uap->fname);
+ return (0);
}
/*
- * Creat system call.
+ * Close called
+ *
+ * Update the times on the inode.
*/
-creat()
+/* ARGSUSED */
+int
+ufs_close(vp, fflag, cred, p)
+ struct vnode *vp;
+ int fflag;
+ struct ucred *cred;
+ struct proc *p;
{
- struct a {
- char *fname;
- int fmode;
- } *uap = (struct a *)u.u_ap;
+ register struct inode *ip;
- copen(FWRITE|FCREAT|FTRUNC, uap->fmode, uap->fname);
+ ip = VTOI(vp);
+ if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED))
+ ITIMES(ip, &time, &time);
+ return (0);
}
/*
- * Common code for open and creat.
- * Check permissions, allocate an open file structure,
- * and call the device open routine if any.
+ * 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.
*/
-copen(mode, arg, fname)
+int
+ufs_access(vp, mode, cred, p)
+ struct vnode *vp;
register int mode;
- int arg;
- caddr_t fname;
+ struct ucred *cred;
+ struct proc *p;
{
- register struct inode *ip;
- register struct file *fp;
- register struct nameidata *ndp = &u.u_nd;
- int indx;
-
- fp = falloc();
- if (fp == NULL)
- return;
- indx = u.u_r.r_val1;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = fname;
- if (mode&FCREAT) {
- if (mode & FEXCL)
- ndp->ni_nameiop = CREATE;
- else
- ndp->ni_nameiop = CREATE | FOLLOW;
- ip = namei(ndp);
- if (ip == NULL) {
- if (u.u_error)
- goto bad1;
- ip = maknode(arg&07777&(~ISVTX), ndp);
- if (ip == NULL)
- goto bad1;
- mode &= ~FTRUNC;
- } else {
- if (mode&FEXCL) {
- u.u_error = EEXIST;
- goto bad;
- }
- mode &= ~FCREAT;
- }
- } else {
- ndp->ni_nameiop = LOOKUP | FOLLOW;
- ip = namei(ndp);
- if (ip == NULL)
- goto bad1;
+ register struct inode *ip = VTOI(vp);
+ register gid_t *gp;
+ int i, error;
+
+#ifdef DIAGNOSTIC
+ if (!VOP_ISLOCKED(vp)) {
+ vprint("ufs_access: not locked", vp);
+ panic("ufs_access: not locked");
}
- if ((ip->i_mode & IFMT) == IFSOCK) {
- u.u_error = EOPNOTSUPP;
- goto bad;
- }
- if ((mode&FCREAT) == 0) {
- if (mode&FREAD)
- if (access(ip, IREAD))
- goto bad;
- if (mode&(FWRITE|FTRUNC)) {
- if (access(ip, IWRITE))
- goto bad;
- if ((ip->i_mode&IFMT) == IFDIR) {
- u.u_error = EISDIR;
- goto bad;
- }
+#endif
+#ifdef QUOTA
+ if (mode & VWRITE) {
+ switch (vp->v_type) {
+ case VREG: case VDIR: case VLNK:
+ if (error = getinoquota(ip))
+ return (error);
}
}
- if (mode&FTRUNC)
- itrunc(ip, (u_long)0);
- IUNLOCK(ip);
- fp->f_flag = mode&FMASK;
- fp->f_type = DTYPE_INODE;
- fp->f_ops = &inodeops;
- fp->f_data = (caddr_t)ip;
- if (setjmp(&u.u_qsave)) {
- if (u.u_error == 0)
- u.u_error = EINTR;
- u.u_ofile[indx] = NULL;
- closef(fp);
- return;
+#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:
+ ;
}
- u.u_error = openi(ip, mode);
- if (u.u_error == 0)
- return;
- ILOCK(ip);
-bad:
- iput(ip);
-bad1:
- u.u_ofile[indx] = NULL;
- fp->f_count--;
+ if ((ip->i_mode & mode) != 0)
+ return (0);
+ return (EACCES);
}
-/*
- * Mknod system call
- */
-mknod()
+/* ARGSUSED */
+int
+ufs_getattr(vp, vap, cred, p)
+ struct vnode *vp;
+ register struct vattr *vap;
+ struct ucred *cred;
+ struct proc *p;
{
register struct inode *ip;
- register struct a {
- char *fname;
- int fmode;
- int dev;
- } *uap = (struct a *)u.u_ap;
- register struct nameidata *ndp = &u.u_nd;
-
- if (!suser())
- return;
- ndp->ni_nameiop = CREATE;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip != NULL) {
- u.u_error = EEXIST;
- goto out;
- }
- if (u.u_error)
- return;
- ip = maknode(uap->fmode, ndp);
- if (ip == NULL)
- return;
- switch (ip->i_mode & IFMT) {
-
- case IFMT: /* used by badsect to flag bad sectors */
- case IFCHR:
- case IFBLK:
- if (uap->dev) {
- /*
- * Want to be able to use this to make badblock
- * inodes, so don't truncate the dev number.
- */
- ip->i_rdev = uap->dev;
- ip->i_flag |= IACC|IUPD|ICHG;
- }
- }
-out:
- iput(ip);
+ ip = VTOI(vp);
+ ITIMES(ip, &time, &time);
+ /*
+ * Copy from inode table
+ */
+ vap->va_fsid = ip->i_dev;
+ vap->va_fileid = ip->i_number;
+ vap->va_mode = ip->i_mode & ~IFMT;
+ vap->va_nlink = ip->i_nlink;
+ vap->va_uid = ip->i_uid;
+ vap->va_gid = ip->i_gid;
+ vap->va_rdev = (dev_t)ip->i_rdev;
+#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;
+ vap->va_mtime.tv_usec = 0;
+ vap->va_ctime.tv_sec = ip->i_ctime;
+ vap->va_ctime.tv_usec = 0;
+ vap->va_flags = ip->i_flags;
+ vap->va_gen = ip->i_gen;
+ /* this doesn't belong here */
+ if (vp->v_type == VBLK)
+ vap->va_blocksize = BLKDEV_IOSIZE;
+ else if (vp->v_type == VCHR)
+ vap->va_blocksize = MAXBSIZE;
+ else
+ vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
+ vap->va_bytes = dbtob(ip->i_blocks);
+#ifdef _NOQUAD
+ vap->va_bytes_rsv = 0;
+#endif
+ vap->va_type = vp->v_type;
+ vap->va_filerev = ip->i_modrev;
+ return (0);
}
/*
- * link system call
+ * Set attribute vnode op. called from several syscalls
*/
-link()
+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, *xp;
- register struct a {
- char *target;
- char *linkname;
- } *uap = (struct a *)u.u_ap;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = LOOKUP | FOLLOW;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->target;
- ip = namei(ndp); /* well, this routine is doomed anyhow */
- if (ip == NULL)
- return;
- if ((ip->i_mode&IFMT) == IFDIR && !suser()) {
- iput(ip);
- return;
+ register struct inode *ip;
+ int error;
+
+ /*
+ * Check for unsettable attributes.
+ */
+ if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
+ (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
+ (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) ||
+ ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
+ return (EINVAL);
}
- ip->i_nlink++;
- ip->i_flag |= ICHG;
- iupdat(ip, &time, &time, 1);
- IUNLOCK(ip);
- ndp->ni_nameiop = CREATE;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = (caddr_t)uap->linkname;
- xp = namei(ndp);
- if (xp != NULL) {
- u.u_error = EEXIST;
- iput(xp);
- goto out;
+ /*
+ * Go through the fields and update iff not VNOVAL.
+ */
+ if (vap->va_uid != (u_short)VNOVAL || vap->va_gid != (u_short)VNOVAL)
+ if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, p))
+ return (error);
+ if (vap->va_size != VNOVAL) {
+ if (vp->v_type == VDIR)
+ return (EISDIR);
+ if (error = VOP_TRUNCATE(vp, vap->va_size, 0)) /* IO_SYNC? */
+ return (error);
}
- if (u.u_error)
- goto out;
- if (ndp->ni_pdir->i_dev != ip->i_dev) {
- iput(ndp->ni_pdir);
- u.u_error = EXDEV;
- goto out;
+ 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, &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 = VOP_UPDATE(vp, &vap->va_atime, &vap->va_mtime, 1))
+ return (error);
}
- u.u_error = direnter(ip, ndp);
-out:
- if (u.u_error) {
- ip->i_nlink--;
+ error = 0;
+ if (vap->va_mode != (u_short)VNOVAL)
+ error = ufs_chmod(vp, (int)vap->va_mode, p);
+ if (vap->va_flags != VNOVAL) {
+ if (cred->cr_uid != ip->i_uid &&
+ (error = suser(cred, &p->p_acflag)))
+ return (error);
+ if (cred->cr_uid == 0) {
+ ip->i_flags = vap->va_flags;
+ } else {
+ ip->i_flags &= 0xffff0000;
+ ip->i_flags |= (vap->va_flags & 0xffff);
+ }
ip->i_flag |= ICHG;
}
- irele(ip);
+ return (error);
}
/*
- * symlink -- make a symbolic link
+ * Change the mode on a file.
+ * Inode must be locked before calling.
*/
-symlink()
+static int
+ufs_chmod(vp, mode, p)
+ register struct vnode *vp;
+ register int mode;
+ struct proc *p;
{
- register struct a {
- char *target;
- char *linkname;
- } *uap = (struct a *)u.u_ap;
- register struct inode *ip;
- register char *tp;
- register c, nc;
- register struct nameidata *ndp = &u.u_nd;
-
- tp = uap->target;
- nc = 0;
- while (c = fubyte(tp)) {
- if (c < 0) {
- u.u_error = EFAULT;
- return;
- }
- tp++;
- nc++;
+ register struct ucred *cred = p->p_ucred;
+ register struct inode *ip = VTOI(vp);
+ int error;
+
+ if (cred->cr_uid != ip->i_uid &&
+ (error = suser(cred, &p->p_acflag)))
+ return (error);
+ if (cred->cr_uid) {
+ if (vp->v_type != VDIR && (mode & ISVTX))
+ return (EFTYPE);
+ if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
+ return (EPERM);
}
- ndp->ni_nameiop = CREATE;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->linkname;
- ip = namei(ndp);
- if (ip) {
- iput(ip);
- u.u_error = EEXIST;
- return;
- }
- if (u.u_error)
- return;
- ip = maknode(IFLNK | 0777, ndp);
- if (ip == NULL)
- return;
- u.u_error = rdwri(UIO_WRITE, ip, uap->target, nc, (off_t)0, 0,
- (int *)0);
- /* handle u.u_error != 0 */
- iput(ip);
+ ip->i_mode &= ~07777;
+ ip->i_mode |= mode & 07777;
+ ip->i_flag |= ICHG;
+ if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0)
+ (void) vnode_pager_uncache(vp);
+ return (0);
}
/*
- * Unlink system call.
- * Hard to avoid races here, especially
- * in unlinking directories.
+ * Perform chown operation on inode ip;
+ * inode must be locked prior to call.
*/
-unlink()
+static int
+ufs_chown(vp, uid, gid, p)
+ register struct vnode *vp;
+ u_int uid;
+ u_int gid;
+ struct proc *p;
{
- struct a {
- char *fname;
- } *uap = (struct a *)u.u_ap;
- register struct inode *ip, *dp;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = DELETE | LOCKPARENT;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- dp = ndp->ni_pdir;
- if ((ip->i_mode&IFMT) == IFDIR && !suser())
- goto out;
+ register struct inode *ip = VTOI(vp);
+ register struct ucred *cred = p->p_ucred;
+ uid_t ouid;
+ gid_t ogid;
+ int error = 0;
+#ifdef QUOTA
+ register int i;
+ long change;
+#endif
+
+ if (uid == (u_short)VNOVAL)
+ uid = ip->i_uid;
+ if (gid == (u_short)VNOVAL)
+ gid = ip->i_gid;
/*
- * Don't unlink a mounted file.
+ * If we don't own the file, are trying to change the owner
+ * of the file, or are not a member of the target group,
+ * the caller must be superuser or the call fails.
*/
- if (ip->i_dev != dp->i_dev) {
- u.u_error = EBUSY;
- goto out;
+ if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
+ !groupmember((gid_t)gid, cred)) &&
+ (error = suser(cred, &p->p_acflag)))
+ return (error);
+ ouid = ip->i_uid;
+ ogid = ip->i_gid;
+#ifdef QUOTA
+ if (error = getinoquota(ip))
+ return (error);
+ if (ouid == uid) {
+ dqrele(vp, ip->i_dquot[USRQUOTA]);
+ ip->i_dquot[USRQUOTA] = NODQUOT;
}
- if (ip->i_flag&ITEXT)
- xrele(ip); /* try once to free text */
- if (dirremove(ndp)) {
- ip->i_nlink--;
- ip->i_flag |= ICHG;
+ if (ogid == gid) {
+ dqrele(vp, ip->i_dquot[GRPQUOTA]);
+ ip->i_dquot[GRPQUOTA] = NODQUOT;
}
-out:
- if (dp == ip)
- irele(ip);
- else
- iput(ip);
- iput(dp);
-}
-
-/*
- * Seek system call
- */
-lseek()
-{
- register struct file *fp;
- register struct a {
- int fd;
- off_t off;
- int sbase;
- } *uap = (struct a *)u.u_ap;
-
- GETF(fp, uap->fd);
- if (fp->f_type != DTYPE_INODE) {
- u.u_error = ESPIPE;
- return;
+ 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;
}
- switch (uap->sbase) {
-
- case L_INCR:
- fp->f_offset += uap->off;
- break;
-
- case L_XTND:
- fp->f_offset = uap->off + ((struct inode *)fp->f_data)->i_size;
- break;
-
- case L_SET:
- fp->f_offset = uap->off;
- break;
-
- default:
- u.u_error = EINVAL;
- return;
+#endif
+ ip->i_uid = uid;
+ ip->i_gid = gid;
+#ifdef QUOTA
+ 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;
+ }
}
- u.u_r.r_off = fp->f_offset;
-}
-
-/*
- * Access system call
- */
-saccess()
-{
- register svuid, svgid;
- register struct inode *ip;
- register struct a {
- char *fname;
- int fmode;
- } *uap = (struct a *)u.u_ap;
- register struct nameidata *ndp = &u.u_nd;
-
- svuid = u.u_uid;
- svgid = u.u_gid;
- u.u_uid = u.u_ruid;
- u.u_gid = u.u_rgid;
- ndp->ni_nameiop = LOOKUP | FOLLOW;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip != NULL) {
- if ((uap->fmode&R_OK) && access(ip, IREAD))
- goto done;
- if ((uap->fmode&W_OK) && access(ip, IWRITE))
- goto done;
- if ((uap->fmode&X_OK) && access(ip, IEXEC))
- goto done;
-done:
- iput(ip);
+ 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;
+ }
+ 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);
}
- u.u_uid = svuid;
- u.u_gid = svgid;
-}
-
-/*
- * Stat system call. This version follows links.
- */
-stat()
-{
-
- stat1(FOLLOW);
+ 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);
}
-/*
- * Lstat system call. This version does not follow links.
- */
-lstat()
+/* ARGSUSED */
+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;
{
- stat1(NOFOLLOW);
+ return (ENOTTY);
}
-stat1(follow)
- int follow;
+/* ARGSUSED */
+int
+ufs_select(vp, which, fflags, cred, p)
+ struct vnode *vp;
+ int which, fflags;
+ struct ucred *cred;
+ struct proc *p;
{
- register struct inode *ip;
- register struct a {
- char *fname;
- struct stat *ub;
- } *uap = (struct a *)u.u_ap;
- struct stat sb;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = LOOKUP | follow;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- (void) ino_stat(ip, &sb);
- iput(ip);
- u.u_error = copyout((caddr_t)&sb, (caddr_t)uap->ub, sizeof (sb));
-}
-/*
- * Return target name of a symbolic link
- */
-readlink()
-{
- register struct inode *ip;
- register struct a {
- char *name;
- char *buf;
- int count;
- } *uap = (struct a *)u.u_ap;
- register struct nameidata *ndp = &u.u_nd;
- int resid;
-
- ndp->ni_nameiop = LOOKUP;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->name;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- if ((ip->i_mode&IFMT) != IFLNK) {
- u.u_error = EINVAL;
- goto out;
- }
- u.u_error = rdwri(UIO_READ, ip, uap->buf, uap->count, (off_t)0, 0,
- &resid);
-out:
- iput(ip);
- u.u_r.r_val1 = uap->count - resid;
+ /*
+ * We should really check to see if I/O is possible.
+ */
+ return (1);
}
/*
- * Change mode of a file given path name.
+ * Mmap a file
+ *
+ * NB Currently unsupported.
*/
-chmod()
+/* ARGSUSED */
+int
+ufs_mmap(vp, fflags, cred, p)
+ struct vnode *vp;
+ int fflags;
+ struct ucred *cred;
+ struct proc *p;
{
- struct inode *ip;
- struct a {
- char *fname;
- int fmode;
- } *uap = (struct a *)u.u_ap;
-
- if ((ip = owner(uap->fname, FOLLOW)) == NULL)
- return;
- u.u_error = chmod1(ip, uap->fmode);
- iput(ip);
-}
-/*
- * Change mode of a file given a file descriptor.
- */
-fchmod()
-{
- struct a {
- int fd;
- int fmode;
- } *uap = (struct a *)u.u_ap;
- register struct inode *ip;
- register struct file *fp;
-
- fp = getinode(uap->fd);
- if (fp == NULL)
- return;
- ip = (struct inode *)fp->f_data;
- if (u.u_uid != ip->i_uid && !suser())
- return;
- ILOCK(ip);
- u.u_error = chmod1(ip, uap->fmode);
- IUNLOCK(ip);
+ return (EINVAL);
}
/*
- * Change the mode on a file.
- * Inode must be locked before calling.
+ * Seek on a file
+ *
+ * Nothing to do, so just return.
*/
-chmod1(ip, mode)
- register struct inode *ip;
- register int mode;
+/* ARGSUSED */
+int
+ufs_seek(vp, oldoff, newoff, cred)
+ struct vnode *vp;
+ off_t oldoff, newoff;
+ struct ucred *cred;
{
- if (ip->i_fs->fs_ronly)
- return (EROFS);
- ip->i_mode &= ~07777;
- if (u.u_uid) {
- if ((ip->i_mode & IFMT) != IFDIR)
- mode &= ~ISVTX;
- if (!groupmember(ip->i_gid))
- mode &= ~ISGID;
- }
- ip->i_mode |= mode&07777;
- ip->i_flag |= ICHG;
- if (ip->i_flag&ITEXT && (ip->i_mode&ISVTX)==0)
- xrele(ip);
return (0);
}
/*
- * Set ownership given a path name.
+ * ufs remove
+ * Hard to avoid races here, especially
+ * in unlinking directories.
*/
-chown()
+int
+ufs_remove(dvp, vp, cnp)
+ struct vnode *dvp, *vp;
+ struct componentname *cnp;
{
- struct inode *ip;
- struct a {
- char *fname;
- int uid;
- int gid;
- } *uap = (struct a *)u.u_ap;
-
- if ((ip = owner(uap->fname, NOFOLLOW)) == NULL)
- return;
- u.u_error = chown1(ip, uap->uid, uap->gid);
- iput(ip);
+ register struct inode *ip, *dp;
+ int error;
+
+ 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
+ ufs_iput(ip);
+ ufs_iput(dp);
+ return (error);
}
/*
- * Set ownership given a file descriptor.
+ * link vnode call
*/
-fchown()
+int
+ufs_link(vp, tdvp, cnp)
+ register struct vnode *vp; /* source vnode */
+ struct vnode *tdvp;
+ struct componentname *cnp;
{
- struct a {
- int fd;
- int uid;
- int gid;
- } *uap = (struct a *)u.u_ap;
register struct inode *ip;
- register struct file *fp;
+ int error;
- fp = getinode(uap->fd);
- if (fp == NULL)
- return;
- ip = (struct inode *)fp->f_data;
- ILOCK(ip);
- u.u_error = chown1(ip, uap->uid, uap->gid);
- IUNLOCK(ip);
+#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 = VOP_UPDATE(vp, &time, &time, 1);
+ if (!error)
+ 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);
}
+
+
/*
- * Perform chown operation on inode ip;
- * inode must be locked prior to call.
+ * relookup - lookup a path name component
+ * Used by lookup to re-aquire things.
*/
-chown1(ip, uid, gid)
- register struct inode *ip;
- int uid, gid;
+int
+relookup(dvp, vpp, cnp)
+ struct vnode *dvp, **vpp;
+ struct componentname *cnp;
{
-#ifdef QUOTA
- register long change;
-#endif
+ 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;
- if (ip->i_fs->fs_ronly)
- return (EROFS);
- if (uid == -1)
- uid = ip->i_uid;
- if (gid == -1)
- gid = ip->i_gid;
- if (uid != ip->i_uid && !suser())
- return (u.u_error);
- if (gid != ip->i_gid && !groupmember((gid_t)gid) && !suser())
- return (u.u_error);
-#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);
-#endif
- ip->i_uid = uid;
- ip->i_gid = gid;
- ip->i_flag |= ICHG;
- if (u.u_ruid != 0)
- ip->i_mode &= ~(ISUID|ISGID);
-#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);
+ /*
+ * 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
-}
-utimes()
-{
- register struct a {
- char *fname;
- struct timeval *tptr;
- } *uap = (struct a *)u.u_ap;
- register struct inode *ip;
- struct timeval tv[2];
-
- if ((ip = owner(uap->fname, FOLLOW)) == NULL)
- return;
- if (ip->i_fs->fs_ronly) {
- u.u_error = EROFS;
- iput(ip);
- return;
+ /*
+ * 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);
}
- u.u_error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv));
- if (u.u_error == 0) {
- ip->i_flag |= IACC|IUPD|ICHG;
- iupdat(ip, &tv[0], &tv[1], 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
+#ifdef NAMEI_DIAGNOSTIC
+ printf("not found\n");
+#endif
+ if (cnp->cn_nameiop == LOOKUP || cnp->cn_nameiop == DELETE ||
+ error != ENOENT)
+ 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);
}
- iput(ip);
-}
+#ifdef NAMEI_DIAGNOSTIC
+ printf("found\n");
+#endif
-/*
- * Flush any pending I/O.
- */
-sync()
-{
+ dp = *vpp;
+#ifdef DIAGNOSTIC
+ /*
+ * Check for symbolic link
+ */
+ if (dp->v_type == VLNK) {
+ panic ("relookup: symlink found.\n");
+ };
- update();
-}
+ /*
+ * Check to see if the vnode has been mounted on;
+ * if so find the root of the mounted file system.
+ */
+#endif
-/*
- * Truncate a file given its path name.
- */
-truncate()
-{
- struct a {
- char *fname;
- off_t length;
- } *uap = (struct a *)u.u_ap;
- struct inode *ip;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = LOOKUP | FOLLOW;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->fname;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- if (access(ip, IWRITE))
- goto bad;
- if ((ip->i_mode&IFMT) == IFDIR) {
- u.u_error = EISDIR;
- goto bad;
- }
- itrunc(ip, (u_long)uap->length);
-bad:
- iput(ip);
-}
-/*
- * Truncate a file given a file descriptor.
- */
-ftruncate()
-{
- struct a {
- int fd;
- off_t length;
- } *uap = (struct a *)u.u_ap;
- struct inode *ip;
- struct file *fp;
-
- fp = getinode(uap->fd);
- if (fp == NULL)
- return;
- if ((fp->f_flag&FWRITE) == 0) {
- u.u_error = EINVAL;
- return;
+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;
+ }
}
- ip = (struct inode *)fp->f_data;
- ILOCK(ip);
- itrunc(ip, (u_long)uap->length);
- IUNLOCK(ip);
-}
+ /* 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);
-/*
- * Synch an open file.
- */
-fsync()
-{
- struct a {
- int fd;
- } *uap = (struct a *)u.u_ap;
- struct inode *ip;
- struct file *fp;
-
- fp = getinode(uap->fd);
- if (fp == NULL)
- return;
- ip = (struct inode *)fp->f_data;
- ILOCK(ip);
- syncip(ip);
- IUNLOCK(ip);
+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");
* Basic algorithm is:
*
* 1) Bump link count on source while we're linking it to the
- * target. This also insure the inode won't be deleted out
+ * target. This also ensure the inode won't be deleted out
* from underneath us while we work (it may be truncated by
* a concurrent `trunc' or `open' for creation).
* 2) Link source to destination. If destination already exists,
* directory was moved and the parent of the destination
* is different from the source, patch the ".." entry in the
* directory.
- *
- * Source and destination must either both be directories, or both
- * not be directories. If target is a directory, it must be empty.
*/
-rename()
+int
+ufs_rename(fdvp, fvp, fcnp,
+ tdvp, tvp, tcnp)
+ struct vnode *fdvp, *fvp;
+ struct componentname *fcnp;
+ struct vnode *tdvp, *tvp;
+ struct componentname *tcnp;
{
- struct a {
- char *from;
- char *to;
- } *uap = (struct a *)u.u_ap;
register struct inode *ip, *xp, *dp;
struct dirtemplate dirbuf;
int doingdirectory = 0, oldparent = 0, newparent = 0;
- register struct nameidata *ndp = &u.u_nd;
int error = 0;
+ int fdvpneedsrele = 1, tdvpneedsrele = 1;
- ndp->ni_nameiop = DELETE | LOCKPARENT;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->from;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- dp = ndp->ni_pdir;
+#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;
-
- d = &ndp->ni_dent;
/*
* Avoid ".", "..", and aliases of "." for obvious reasons.
*/
- if ((d->d_namlen == 1 && d->d_name[0] == '.') ||
- (d->d_namlen == 2 && bcmp(d->d_name, "..", 2) == 0) ||
- (dp == ip) || (ip->i_flag & IRENAME)) {
- iput(dp);
- if (dp == ip)
- irele(ip);
- else
- iput(ip);
- u.u_error = EINVAL;
- return;
+ 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++;
}
- iput(dp);
+ vrele(fdvp);
/*
* 1) Bump link count while we're moving stuff
*/
ip->i_nlink++;
ip->i_flag |= ICHG;
- iupdat(ip, &time, &time, 1);
+ error = VOP_UPDATE(fvp, &time, &time, 1);
IUNLOCK(ip);
/*
* When the target exists, both the directory
- * and target inodes are returned locked.
+ * and target vnodes are returned locked.
*/
- ndp->ni_nameiop = CREATE | LOCKPARENT | NOCACHE;
- ndp->ni_dirp = (caddr_t)uap->to;
- xp = namei(ndp);
- if (u.u_error) {
- error = u.u_error;
- goto out;
- }
- dp = ndp->ni_pdir;
+ dp = VTOI(tdvp);
+ xp = NULL;
+ 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 (access(ip, IWRITE))
+ VOP_LOCK(fvp);
+ error = ufs_access(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc);
+ VOP_UNLOCK(fvp);
+ if (error)
goto bad;
- do {
- dp = ndp->ni_pdir;
- if (xp != NULL)
- iput(xp);
- u.u_error = checkpath(ip, dp);
- if (u.u_error)
- goto out;
- xp = namei(ndp);
- if (u.u_error) {
- error = u.u_error;
- goto out;
- }
- } while (dp != ndp->ni_pdir);
+ 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
* expunge the original entry's existence.
*/
if (xp == NULL) {
- if (dp->i_dev != ip->i_dev) {
- error = EXDEV;
- goto bad;
- }
+ if (dp->i_dev != ip->i_dev)
+ panic("rename: EXDEV");
/*
* Account for ".." in new directory.
* When source and destination have the same
* 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;
- iupdat(dp, &time, &time, 1);
+ if (error = VOP_UPDATE(ITOV(dp), &time, &time, 1))
+ goto bad;
}
- error = direnter(ip, ndp);
- if (error)
- goto out;
- } else {
- if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) {
- error = EXDEV;
+ 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");
/*
* Short circuit rename(foo, foo).
*/
if (xp->i_number == ip->i_number)
- goto bad;
+ panic("rename: same file");
/*
* If the parent directory is "sticky", then the user must
* own the parent directory, or the destination of the rename,
* otherwise the destination may not be changed (except by
* root). This implements append-only directories.
*/
- if ((dp->i_mode & ISVTX) && u.u_uid != 0 &&
- u.u_uid != dp->i_uid && xp->i_uid != u.u_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) || xp->i_nlink > 2) {
+ if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
+ xp->i_nlink > 2) {
error = ENOTEMPTY;
goto bad;
}
error = ENOTDIR;
goto bad;
}
- cacheinval(dp);
+ cache_purge(ITOV(dp));
} else if (doingdirectory) {
error = EISDIR;
goto bad;
}
- dirrewrite(dp, ip, ndp);
- if (u.u_error) {
- error = u.u_error;
- goto bad1;
+ if (error = ufs_dirrewrite(dp, ip, tcnp))
+ goto bad;
+ /*
+ * 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");
- 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.
*/
- ndp->ni_nameiop = DELETE | LOCKPARENT;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->from;
- xp = namei(ndp);
- if (xp != NULL)
- dp = ndp->ni_pdir;
- else
- dp = NULL;
+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 {
+ /*
+ * From name has disappeared.
+ */
+ if (doingdirectory)
+ panic("rename: lost dir entry");
+ vrele(ITOV(ip));
+ return (0);
+ }
/*
- * Insure that the directory entry still exists and has not
+ * Ensure that the directory entry still exists and has not
* changed while the new name has been entered. If the source is
* a file then the entry may have been unlinked or renamed. In
* either case there is no further work to be done. If the source
* is a directory then it cannot have been rmdir'ed; its link
* count of three would cause a rmdir to fail with ENOTEMPTY.
- * The IRENAME flag insures that it cannot be moved by another
+ * The IRENAME flag ensures that it cannot be moved by another
* rename.
*/
if (xp != ip) {
if (doingdirectory && newparent) {
dp->i_nlink--;
dp->i_flag |= ICHG;
- error = rdwri(UIO_READ, xp, (caddr_t)&dirbuf,
- sizeof (struct dirtemplate), (off_t)0, 1,
- (int *)0);
+ error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf,
+ sizeof (struct dirtemplate), (off_t)0,
+ UIO_SYSSPACE, IO_NODELOCKED,
+ tcnp->cn_cred, (int *)0, (struct proc *)0);
if (error == 0) {
if (dirbuf.dotdot_namlen != 2 ||
dirbuf.dotdot_name[0] != '.' ||
dirbuf.dotdot_name[1] != '.') {
- printf("rename: mangled dir\n");
+ ufs_dirbad(xp, 12,
+ "rename: mangled dir");
} else {
dirbuf.dotdot_ino = newparent;
- (void) rdwri(UIO_WRITE, xp,
+ (void) vn_rdwr(UIO_WRITE, ITOV(xp),
(caddr_t)&dirbuf,
sizeof (struct dirtemplate),
- (off_t)0, 1, (int *)0);
- cacheinval(dp);
+ (off_t)0, UIO_SYSSPACE,
+ IO_NODELOCKED|IO_SYNC,
+ tcnp->cn_cred, (int *)0,
+ (struct proc *)0);
+ cache_purge(ITOV(dp));
}
}
}
- if (dirremove(ndp)) {
+ error = ufs_dirremove(fdvp, fcnp);
+ if (!error) {
xp->i_nlink--;
xp->i_flag |= ICHG;
}
xp->i_flag &= ~IRENAME;
- if (error == 0) /* XXX conservative */
- error = u.u_error;
}
if (dp)
- iput(dp);
+ vput(ITOV(dp));
if (xp)
- iput(xp);
- irele(ip);
- if (error)
- u.u_error = error;
- return;
+ vput(ITOV(xp));
+ vrele(ITOV(ip));
+ return (error);
bad:
- iput(dp);
-bad1:
if (xp)
- iput(xp);
+ vput(ITOV(xp));
+ vput(ITOV(dp));
out:
ip->i_nlink--;
ip->i_flag |= ICHG;
- irele(ip);
- if (error)
- u.u_error = error;
-}
-
-/*
- * Make a new file.
- */
-struct inode *
-maknode(mode, ndp)
- int mode;
- register struct nameidata *ndp;
-{
- register struct inode *ip;
- register struct inode *pdir = ndp->ni_pdir;
- ino_t ipref;
-
- if ((mode & IFMT) == IFDIR)
- ipref = dirpref(pdir->i_fs);
- else
- ipref = pdir->i_number;
- ip = ialloc(pdir, ipref, mode);
- if (ip == NULL) {
- iput(pdir);
- return (NULL);
- }
-#ifdef QUOTA
- if (ip->i_dquot != NODQUOT)
- panic("maknode: dquot");
-#endif
- ip->i_flag |= IACC|IUPD|ICHG;
- if ((mode & IFMT) == 0)
- mode |= IFREG;
- ip->i_mode = mode & ~u.u_cmask;
- ip->i_nlink = 1;
- ip->i_uid = u.u_uid;
- ip->i_gid = pdir->i_gid;
- if (ip->i_mode & ISGID && !groupmember(ip->i_gid))
- ip->i_mode &= ~ISGID;
-#ifdef QUOTA
- ip->i_dquot = inoquota(ip);
-#endif
-
- /*
- * Make sure inode goes to disk before directory entry.
- */
- iupdat(ip, &time, &time, 1);
- u.u_error = direnter(ip, ndp);
- if (u.u_error) {
- /*
- * Write error occurred trying to update directory
- * so must deallocate the inode.
- */
- ip->i_nlink = 0;
- ip->i_flag |= ICHG;
- iput(ip);
- return (NULL);
- }
- return (ip);
+ vrele(ITOV(ip));
+ return (error);
}
/*
* A virgin directory (no blushing please).
*/
-struct dirtemplate mastertemplate = {
+static struct dirtemplate mastertemplate = {
0, 12, 1, ".",
0, DIRBLKSIZ - 12, 2, ".."
};
/*
* Mkdir system call
*/
-mkdir()
+int
+ufs_mkdir(dvp, vpp, cnp, vap)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
+ struct vattr *vap;
{
- struct a {
- char *name;
- int dmode;
- } *uap = (struct a *)u.u_ap;
register struct inode *ip, *dp;
+ struct vnode *tvp;
struct dirtemplate dirtemplate;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = CREATE;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->name;
- ip = namei(ndp);
- if (u.u_error)
- return;
- if (ip != NULL) {
- iput(ip);
- u.u_error = EEXIST;
- return;
+ int error;
+ int dmode;
+
+#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);
}
- dp = ndp->ni_pdir;
- uap->dmode &= 0777;
- uap->dmode |= IFDIR;
+ 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.
*/
- ip = ialloc(dp, dirpref(dp->i_fs), uap->dmode);
- if (ip == NULL) {
- iput(dp);
- return;
+ if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) {
+ free(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(dp);
+ return (error);
}
+ 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 = uap->dmode & ~u.u_cmask;
+ ip->i_mode = dmode;
+ ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */
ip->i_nlink = 2;
- ip->i_uid = u.u_uid;
- ip->i_gid = dp->i_gid;
-#ifdef QUOTA
- ip->i_dquot = inoquota(ip);
-#endif
- 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;
- 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;
- u.u_error = rdwri(UIO_WRITE, ip, (caddr_t)&dirtemplate,
- sizeof (dirtemplate), (off_t)0, 1, (int *)0);
- if (u.u_error) {
+ error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate,
+ 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 > ip->i_fs->fs_fsize)
- panic("mkdir: blksize"); /* XXX - should grow with bmap() */
- 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.
- */
- u.u_error = direnter(ip, ndp);
- dp = NULL;
- if (u.u_error) {
- ndp->ni_nameiop = LOOKUP | NOCACHE;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->name;
- dp = namei(ndp);
- if (dp) {
- 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,
- * irele 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 (u.u_error) {
+ if (error) {
ip->i_nlink = 0;
ip->i_flag |= ICHG;
- }
- if (dp)
- iput(dp);
- iput(ip);
+ ufs_iput(ip);
+ } else
+ *vpp = ITOV(ip);
+ FREE(cnp->cn_pnbuf, M_NAMEI);
+ ufs_iput(dp);
+ return (error);
}
/*
* Rmdir system call.
*/
-rmdir()
+int
+ufs_rmdir(dvp, vp, cnp)
+ struct vnode *dvp;
+ struct vnode *vp;
+ struct componentname *cnp;
{
- struct a {
- char *name;
- } *uap = (struct a *)u.u_ap;
register struct inode *ip, *dp;
- register struct nameidata *ndp = &u.u_nd;
-
- ndp->ni_nameiop = DELETE | LOCKPARENT;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = uap->name;
- ip = namei(ndp);
- if (ip == NULL)
- return;
- dp = ndp->ni_pdir;
+ int error;
+
+ ip = VTOI(vp);
+ dp = VTOI(dvp);
/*
* No rmdir "." please.
*/
if (dp == ip) {
- irele(dp);
- iput(ip);
- u.u_error = EINVAL;
- return;
- }
- if ((ip->i_mode&IFMT) != IFDIR) {
- u.u_error = ENOTDIR;
- goto out;
- }
- /*
- * Don't remove a mounted on directory.
- */
- if (ip->i_dev != dp->i_dev) {
- u.u_error = EBUSY;
- goto out;
+ vrele(dvp);
+ ufs_iput(ip);
+ return (EINVAL);
}
/*
* Verify the directory is empty (and valid).
* the current directory and thus be
* non-empty.)
*/
- if (ip->i_nlink != 2 || !dirempty(ip, dp->i_number)) {
- u.u_error = ENOTEMPTY;
+ 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 (dirremove(ndp) == 0)
+ if (error = ufs_dirremove(dvp, cnp))
goto out;
dp->i_nlink--;
dp->i_flag |= ICHG;
- cacheinval(dp);
- iput(dp);
- dp = 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;
- itrunc(ip, (u_long)0);
- cacheinval(ip);
+ error = VOP_TRUNCATE(vp, (u_long)0, IO_SYNC);
+ cache_purge(ITOV(ip));
out:
- if (dp)
- iput(dp);
- iput(ip);
+ if (dvp)
+ ufs_iput(dp);
+ ufs_iput(ip);
+ return (error);
+}
+
+/*
+ * symlink -- make a symbolic link
+ */
+int
+ufs_symlink(dvp, vpp, cnp, vap, target)
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
+ struct vattr *vap;
+ char *target;
+{
+ int error;
+
+ if (error = ufs_makeinode(IFLNK | vap->va_mode, dvp, vpp, cnp))
+ return (error);
+ 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
+ */
+int
+ufs_readdir(vp, uio, cred, eofflagp)
+ struct vnode *vp;
+ register struct uio *uio;
+ struct ucred *cred;
+ int *eofflagp;
+{
+ int count, lost, error;
+
+ count = uio->uio_resid;
+ count &= ~(DIRBLKSIZ - 1);
+ lost = uio->uio_resid - count;
+ if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1)))
+ return (EINVAL);
+ uio->uio_resid = count;
+ uio->uio_iov->iov_len = count;
+ 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 (VOP_READ(vp, uiop, 0, cred));
+}
+
+/*
+ * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually
+ * done. If a buffer has been saved in anticipation of a CREATE, delete it.
+ */
+/* ARGSUSED */
+int
+ufs_abortop(dvp, cnp)
+ struct vnode *dvp;
+ struct componentname *cnp;
+{
+ 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;
+{
+ register struct inode *ip = VTOI(vp);
+
+ ILOCK(ip);
+ return (0);
+}
+
+/*
+ * Unlock an inode.
+ */
+int
+ufs_unlock(vp)
+ struct vnode *vp;
+{
+ register struct inode *ip = VTOI(vp);
+
+ if (!(ip->i_flag & ILOCKED))
+ panic("ufs_unlock NOT LOCKED");
+ IUNLOCK(ip);
+ return (0);
+}
+
+/*
+ * Check for a locked inode.
+ */
+int
+ufs_islocked(vp)
+ struct vnode *vp;
+{
+
+ if (VTOI(vp)->i_flag & ILOCKED)
+ return (1);
+ return (0);
+}
+
+/*
+ * Calculate the logical to physical mapping if not done already,
+ * then call the device strategy routine.
+ */
+int checkoverlap = 0;
+
+int
+ufs_strategy(bp)
+ register struct buf *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))
+ return (error);
+ if ((long)bp->b_blkno == -1)
+ clrbuf(bp);
+ }
+ if ((long)bp->b_blkno == -1) {
+ biodone(bp);
+ return (0);
+ }
+#ifdef DIAGNOSTIC
+ if (checkoverlap && bp->b_vp->v_mount->mnt_stat.f_type == MOUNT_UFS)
+ ffs_checkoverlap(bp, ip);
+#endif
+
+ 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;
+ int ioflag;
+ struct ucred *cred;
+{
+
+ /*
+ * Set access flag.
+ */
+ VTOI(vp)->i_flag |= IACC;
+ return (spec_read(vp, uio, ioflag, cred));
+}
+
+/*
+ * Write wrapper for special devices.
+ */
+int
+ufsspec_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 (spec_write(vp, uio, ioflag, cred));
+}
+
+/*
+ * Close wrapper for special devices.
+ *
+ * Update the times on the inode then do device close.
+ */
+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_usecount > 1 && !(ip->i_flag & ILOCKED))
+ ITIMES(ip, &time, &time);
+ return (spec_close(vp, fflag, cred, p));
+}
+
+#ifdef FIFO
+/*
+ * Read wrapper for fifo's
+ */
+int
+ufsfifo_read(vp, uio, ioflag, cred)
+ struct vnode *vp;
+ struct uio *uio;
+ int ioflag;
+ struct ucred *cred;
+{
+
+ /*
+ * 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 */
-struct file *
-getinode(fdes)
- int fdes;
+/*
+ * 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;
{
- struct file *fp;
+ register struct inode *ip = VTOI(vp);
+ register struct lockf *lock;
+ off_t start, end;
+ int error;
+
+ /*
+ * 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;
- if ((unsigned)fdes >= NOFILE || (fp = u.u_ofile[fdes]) == NULL) {
- u.u_error = EBADF;
- return ((struct file *)0);
+ default:
+ return (EINVAL);
+ }
+ if (start < 0)
+ return (EINVAL);
+ if (fl->l_len == 0)
+ end = -1;
+ else
+ 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);
}
- if (fp->f_type != DTYPE_INODE) {
- u.u_error = EINVAL;
- return ((struct file *)0);
+ /* 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
}
- return (fp);
+ 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);
}
/*
- * mode mask for creation of files
+ * Allocate a new inode.
*/
-umask()
+int
+ufs_makeinode(mode, dvp, vpp, cnp)
+ int mode;
+ struct vnode *dvp;
+ struct vnode **vpp;
+ struct componentname *cnp;
{
- register struct a {
- int mask;
- } *uap = (struct a *)u.u_ap;
+ 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;
+
+ 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;
+#ifdef QUOTA
+ 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 = 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);
+}
- u.u_r.r_val1 = u.u_cmask;
- u.u_cmask = uap->mask & 07777;
+
+#if defined(JOHNH) && 0
+/*
+ * A hack to get the kernel to compile.
+ */
+int
+hang_addrlist()
+{
+ return 0;
}
+int
+free_addrlist()
+{
+ return 0;
+}
+#endif
+