ref: 059b863fab96cf3ba65e74ad67221eec6cbcbe0c
dir: /sys/src/cmd/diff/test/diff-t9.expected/
--- diff-t9.1
+++ diff-t9.2
@@ -1,4 +1,5 @@
-/* $NetBSD: vfs_syscalls.c,v 1.57 1995/10/07 06:28:51 mycroft Exp $ */
+/* $OpenBSD: t9.2,v 1.2 2013/12/01 16:40:56 krw Exp $ */
+/* $NetBSD: vfs_syscalls.c,v 1.71 1996/04/23 10:29:02 mycroft Exp $ */
/*
* Copyright (c) 1989, 1993
@@ -17,11 +18,7 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
@@ -53,13 +50,30 @@
#include <sys/uio.h>
#include <sys/malloc.h>
#include <sys/dirent.h>
+#include <sys/extattr.h>
#include <sys/syscallargs.h>
-#include <vm/vm.h>
+#include <uvm/uvm_extern.h>
#include <sys/sysctl.h>
-static int change_dir __P((struct nameidata *ndp, struct proc *p));
+extern int suid_clear;
+int usermount = 0; /* sysctl: by default, users may not mount */
+
+static int change_dir(struct nameidata *, struct proc *);
+
+void checkdirs(struct vnode *);
+
+/*
+ * Redirection info so we don't have to include the union fs routines in
+ * the kernel directly. This way, we can build unionfs as an LKM. The
+ * pointer gets filled in later, when we modload the LKM, or when the
+ * compiled-in unionfs code gets initialized. For now, we just set
+ * it to a stub routine.
+ */
+
+int (*union_check_p)(struct proc *, struct vnode **,
+ struct file *, struct uio, int *) = NULL;
/*
* Virtual File System System Calls
@@ -69,6 +83,7 @@
* Mount a file system.
*/
/* ARGSUSED */
+int
sys_mount(p, v, retval)
struct proc *p;
void *v;
@@ -78,22 +93,36 @@
syscallarg(char *) type;
syscallarg(char *) path;
syscallarg(int) flags;
- syscallarg(caddr_t) data;
+ syscallarg(void *) data;
} */ *uap = v;
register struct vnode *vp;
register struct mount *mp;
- int error, flag;
- u_long fsindex;
+ int error, flag = 0;
+#ifdef COMPAT_43
+ u_long fstypenum = 0;
+#endif
char fstypename[MFSNAMELEN];
+ char fspath[MNAMELEN];
struct vattr va;
struct nameidata nd;
+ struct vfsconf *vfsp;
+ struct timeval tv;
+
+ if (usermount == 0 && (error = suser(p->p_ucred, &p->p_acflag)))
+ return (error);
+
+ /*
+ * Mount points must fit in MNAMELEN, not MAXPATHLEN.
+ */
+ error = copyinstr(SCARG(uap, path), fspath, MNAMELEN, NULL);
+ if (error)
+ return(error);
/*
* Get vnode to be covered
*/
- NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
- SCARG(uap, path), p);
- if (error = namei(&nd))
+ NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_SYSSPACE, fspath, p);
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
if (SCARG(uap, flags) & MNT_UPDATE) {
@@ -113,7 +142,7 @@
return (EOPNOTSUPP); /* Needs translation */
}
mp->mnt_flag |=
- SCARG(uap, flags) & (MNT_RELOAD | MNT_FORCE | MNT_UPDATE);
+ SCARG(uap, flags) & (MNT_RELOAD | MNT_UPDATE);
/*
* Only root, or the user that did the original mount is
* permitted to update it.
@@ -134,7 +163,11 @@
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
- VOP_UNLOCK(vp);
+ if ((error = vfs_busy(mp, LK_NOWAIT, 0, p)) != 0) {
+ vput(vp);
+ return (error);
+ }
+ VOP_UNLOCK(vp, 0, p);
goto update;
}
/*
@@ -143,7 +176,7 @@
*/
if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) ||
(va.va_uid != p->p_ucred->cr_uid &&
- (error = suser(p->p_ucred, &p->p_acflag)))) {
+ (error = suser(p->p_ucred, &p->p_acflag)))) {
vput(vp);
return (error);
}
@@ -158,40 +191,47 @@
}
SCARG(uap, flags) |= MNT_NOSUID | MNT_NODEV;
}
- if (error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0))
+ if ((error = vinvalbuf(vp, V_SAVE, p->p_ucred, p, 0, 0)) != 0)
return (error);
if (vp->v_type != VDIR) {
vput(vp);
return (ENOTDIR);
}
- if (error = copyinstr(SCARG(uap, type), fstypename, MFSNAMELEN,
- (size_t *)0)) {
-#if defined(COMPAT_09) || defined(COMPAT_43)
+ error = copyinstr(SCARG(uap, type), fstypename, MFSNAMELEN, NULL);
+ if (error) {
+#ifdef COMPAT_43
/*
* Historically filesystem types were identified by number.
* If we get an integer for the filesystem type instead of a
* string, we check to see if it matches one of the historic
* filesystem types.
- */
- fsindex = (u_long)SCARG(uap, type);
- if (fsindex >= nvfssw || vfssw[fsindex] == NULL) {
+ */
+ fstypenum = (u_long)SCARG(uap, type);
+
+ for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
+ if (vfsp->vfc_typenum == fstypenum)
+ break;
+ if (vfsp == NULL) {
vput(vp);
return (ENODEV);
}
- strncpy(fstypename, vfssw[fsindex]->vfs_name, MFSNAMELEN);
+ strncpy(fstypename, vfsp->vfc_name, MFSNAMELEN);
+
#else
vput(vp);
return (error);
#endif
}
- for (fsindex = 0; fsindex < nvfssw; fsindex++)
- if (vfssw[fsindex] != NULL &&
- !strncmp(vfssw[fsindex]->vfs_name, fstypename, MFSNAMELEN))
+ for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next) {
+ if (!strcmp(vfsp->vfc_name, fstypename))
break;
- if (fsindex >= nvfssw) {
+ }
+
+ if (vfsp == NULL) {
vput(vp);
- return (ENODEV);
+ return (EOPNOTSUPP);
}
+
if (vp->v_mountedhere != NULL) {
vput(vp);
return (EBUSY);
@@ -203,15 +243,14 @@
mp = (struct mount *)malloc((u_long)sizeof(struct mount),
M_MOUNT, M_WAITOK);
bzero((char *)mp, (u_long)sizeof(struct mount));
- mp->mnt_op = vfssw[fsindex];
- if (error = vfs_lock(mp)) {
- free((caddr_t)mp, M_MOUNT);
- vput(vp);
- return (error);
- }
- /* Do this early in case we block later. */
- vfssw[fsindex]->vfs_refcount++;
- vp->v_mountedhere = mp;
+ lockinit(&mp->mnt_lock, PVFS, "vfslock", 0, 0);
+ /* This error never happens, but it makes auditing easier */
+ if ((error = vfs_busy(mp, LK_NOWAIT, 0, p)))
+ return (error);
+ mp->mnt_op = vfsp->vfc_vfsops;
+ mp->mnt_vfc = vfsp;
+ mp->mnt_flag |= (vfsp->vfc_flags & MNT_VISFLAGMASK);
+ strncpy(mp->mnt_stat.f_fstypename, vfsp->vfc_name, MFSNAMELEN);
mp->mnt_vnodecovered = vp;
mp->mnt_stat.f_owner = p->p_ucred->cr_uid;
update:
@@ -223,13 +262,19 @@
else if (mp->mnt_flag & MNT_RDONLY)
mp->mnt_flag |= MNT_WANTRDWR;
mp->mnt_flag &=~ (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV |
- MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
+ MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | MNT_SOFTDEP |
+ MNT_NOATIME | MNT_FORCE);
mp->mnt_flag |= SCARG(uap, flags) & (MNT_NOSUID | MNT_NOEXEC |
- MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC);
+ MNT_NODEV | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC |
+ MNT_SOFTDEP | MNT_NOATIME | MNT_FORCE);
/*
* Mount the filesystem.
*/
error = VFS_MOUNT(mp, SCARG(uap, path), SCARG(uap, data), &nd, p);
+ if (!error) {
+ microtime(&tv);
+ mp->mnt_stat.f_ctime = tv.tv_sec;
+ }
if (mp->mnt_flag & MNT_UPDATE) {
vrele(vp);
if (mp->mnt_flag & MNT_WANTRDWR)
@@ -238,23 +283,42 @@
(MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR);
if (error)
mp->mnt_flag = flag;
+
+ if ((mp->mnt_flag & MNT_RDONLY) == 0) {
+ if (mp->mnt_syncer == NULL)
+ error = vfs_allocate_syncvnode(mp);
+ } else {
+ if (mp->mnt_syncer != NULL)
+ vgone(mp->mnt_syncer);
+ mp->mnt_syncer = NULL;
+ }
+
+ vfs_unbusy(mp, p);
return (error);
}
+
+ vp->v_mountedhere = mp;
+
/*
* Put the new filesystem on the mount list after root.
*/
cache_purge(vp);
if (!error) {
+ vfsp->vfc_refcount++;
+ simple_lock(&mountlist_slock);
TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
+ simple_unlock(&mountlist_slock);
checkdirs(vp);
- VOP_UNLOCK(vp);
- vfs_unlock(mp);
+ VOP_UNLOCK(vp, 0, p);
+ if ((mp->mnt_flag & MNT_RDONLY) == 0)
+ error = vfs_allocate_syncvnode(mp);
+ vfs_unbusy(mp, p);
(void) VFS_STATFS(mp, &mp->mnt_stat, p);
- error = VFS_START(mp, 0, p);
+ if ((error = VFS_START(mp, 0, p)) != 0)
+ vrele(vp);
} else {
mp->mnt_vnodecovered->v_mountedhere = (struct mount *)0;
- vfssw[fsindex]->vfs_refcount--;
- vfs_unlock(mp);
+ vfs_unbusy(mp, p);
free((caddr_t)mp, M_MOUNT);
vput(vp);
}
@@ -266,6 +330,7 @@
* or root directory onto which the new filesystem has just been
* mounted. If so, replace them with the new mount point.
*/
+void
checkdirs(olddp)
struct vnode *olddp;
{
@@ -277,7 +342,7 @@
return;
if (VFS_ROOT(olddp->v_mountedhere, &newdp))
panic("mount: lost mount");
- for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) {
+ for (p = LIST_FIRST(&allproc); p != 0; p = LIST_NEXT(p, p_list)) {
fdp = p->p_fd;
if (fdp->fd_cdir == olddp) {
vrele(fdp->fd_cdir);
@@ -305,6 +370,7 @@
* not special file (as before).
*/
/* ARGSUSED */
+int
sys_unmount(p, v, retval)
struct proc *p;
void *v;
@@ -321,7 +387,7 @@
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
mp = vp->v_mount;
@@ -352,50 +418,77 @@
return (EINVAL);
}
vput(vp);
- return (dounmount(mp, SCARG(uap, flags), p));
+
+ if (vfs_busy(mp, LK_EXCLUSIVE, NULL, p))
+ return (EBUSY);
+
+ return (dounmount(mp, SCARG(uap, flags), p, vp));
}
/*
* Do the actual file system unmount.
*/
-dounmount(mp, flags, p)
- register struct mount *mp;
- int flags;
- struct proc *p;
+int
+dounmount(struct mount *mp, int flags, struct proc *p, struct vnode *olddp)
{
struct vnode *coveredvp;
+ struct proc *p2;
int error;
+ int hadsyncer = 0;
- coveredvp = mp->mnt_vnodecovered;
- if (vfs_busy(mp))
- return (EBUSY);
- mp->mnt_flag |= MNT_UNMOUNT;
- if (error = vfs_lock(mp))
- return (error);
-
- mp->mnt_flag &=~ MNT_ASYNC;
- vnode_pager_umount(mp); /* release cached vnodes */
- cache_purgevfs(mp); /* remove cache entries for this file sys */
- if ((error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0 ||
- (flags & MNT_FORCE))
- error = VFS_UNMOUNT(mp, flags, p);
- mp->mnt_flag &= ~MNT_UNMOUNT;
- vfs_unbusy(mp);
- if (error) {
- vfs_unlock(mp);
- } else {
- TAILQ_REMOVE(&mountlist, mp, mnt_list);
- if (coveredvp != NULLVP) {
- vrele(coveredvp);
- coveredvp->v_mountedhere = (struct mount *)0;
- }
- mp->mnt_op->vfs_refcount--;
- vfs_unlock(mp);
- if (mp->mnt_vnodelist.lh_first != NULL)
- panic("unmount: dangling vnode");
- free((caddr_t)mp, M_MOUNT);
- }
- return (error);
+ mp->mnt_flag &=~ MNT_ASYNC;
+ cache_purgevfs(mp); /* remove cache entries for this file sys */
+ if (mp->mnt_syncer != NULL) {
+ hadsyncer = 1;
+ vgone(mp->mnt_syncer);
+ mp->mnt_syncer = NULL;
+ }
+ if (((mp->mnt_flag & MNT_RDONLY) ||
+ (error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0) ||
+ (flags & MNT_FORCE))
+ error = VFS_UNMOUNT(mp, flags, p);
+ simple_lock(&mountlist_slock);
+ if (error) {
+ if ((mp->mnt_flag & MNT_RDONLY) == 0 && hadsyncer)
+ (void) vfs_allocate_syncvnode(mp);
+ lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK,
+ &mountlist_slock, p);
+ return (error);
+ }
+ TAILQ_REMOVE(&mountlist, mp, mnt_list);
+ if ((coveredvp = mp->mnt_vnodecovered) != NULLVP) {
+ if (olddp) {
+ /*
+ * Try to put processes back in a real directory
+ * after a forced unmount.
+ * XXX We're not holding a ref on olddp, which may
+ * change, so compare id numbers.
+ */
+ LIST_FOREACH(p2, &allproc, p_list) {
+ struct filedesc *fdp = p2->p_fd;
+ if (fdp->fd_cdir &&
+ fdp->fd_cdir->v_id == olddp->v_id) {
+ vrele(fdp->fd_cdir);
+ vref(coveredvp);
+ fdp->fd_cdir = coveredvp;
+ }
+ if (fdp->fd_rdir &&
+ fdp->fd_rdir->v_id == olddp->v_id) {
+ vrele(fdp->fd_rdir);
+ vref(coveredvp);
+ fdp->fd_rdir = coveredvp;
+ }
+ }
+ }
+ coveredvp->v_mountedhere = NULL;
+ vrele(coveredvp);
+ }
+ mp->mnt_vfc->vfc_refcount--;
+ if (mp->mnt_vnodelist.lh_first != NULL)
+ panic("unmount: dangling vnode");
+ lockmgr(&mp->mnt_lock, LK_RELEASE | LK_INTERLOCK, &mountlist_slock, p);
+ free((caddr_t)mp, M_MOUNT);
+ return (0);
}
/*
@@ -407,6 +500,7 @@
#endif
/* ARGSUSED */
+int
sys_sync(p, v, retval)
struct proc *p;
void *v;
@@ -415,31 +509,23 @@
register struct mount *mp, *nmp;
int asyncflag;
- for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) {
- /*
- * Get the next pointer in case we hang on vfs_busy
- * while we are being unmounted.
- */
- nmp = mp->mnt_list.cqe_next;
- /*
- * The lock check below is to avoid races with mount
- * and unmount.
- */
- if ((mp->mnt_flag & (MNT_MLOCK|MNT_RDONLY|MNT_MPBUSY)) == 0 &&
- !vfs_busy(mp)) {
+ simple_lock(&mountlist_slock);
+ TAILQ_FOREACH_REVERSE_SAFE(mp, &mountlist, mnt_list, nmp) {
+ if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p))
+ continue;
+ if ((mp->mnt_flag & MNT_RDONLY) == 0) {
asyncflag = mp->mnt_flag & MNT_ASYNC;
mp->mnt_flag &= ~MNT_ASYNC;
+ uvm_vnp_sync(mp);
VFS_SYNC(mp, MNT_NOWAIT, p->p_ucred, p);
if (asyncflag)
mp->mnt_flag |= MNT_ASYNC;
- /*
- * Get the next pointer again, as the next filesystem
- * might have been unmounted while we were sync'ing.
- */
- nmp = mp->mnt_list.cqe_next;
- vfs_unbusy(mp);
}
+ simple_lock(&mountlist_slock);
+ vfs_unbusy(mp, p);
}
+ simple_unlock(&mountlist_slock);
+
#ifdef DEBUG
if (syncprt)
vfs_bufstats();
@@ -451,6 +537,7 @@
* Change filesystem quotas.
*/
/* ARGSUSED */
+int
sys_quotactl(p, v, retval)
struct proc *p;
void *v;
@@ -467,7 +554,7 @@
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
mp = nd.ni_vp->v_mount;
vrele(nd.ni_vp);
@@ -479,6 +566,7 @@
* Get filesystem statistics.
*/
/* ARGSUSED */
+int
sys_statfs(p, v, retval)
struct proc *p;
void *v;
@@ -492,16 +580,27 @@
register struct statfs *sp;
int error;
struct nameidata nd;
+ struct statfs sb;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
mp = nd.ni_vp->v_mount;
sp = &mp->mnt_stat;
vrele(nd.ni_vp);
- if (error = VFS_STATFS(mp, sp, p))
+ if ((error = VFS_STATFS(mp, sp, p)) != 0)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
+#if notyet
+ if (mp->mnt_flag & MNT_SOFTDEP)
+ sp->f_eflags = STATFS_SOFTUPD;
+#endif
+ /* Don't let non-root see filesystem id (for NFS security) */
+ if (suser(p->p_ucred, &p->p_acflag)) {
+ bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
+ sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
+ sp = &sb;
+ }
return (copyout((caddr_t)sp, (caddr_t)SCARG(uap, buf), sizeof(*sp)));
}
@@ -509,33 +608,48 @@
* Get filesystem statistics.
*/
/* ARGSUSED */
+int
sys_fstatfs(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_fstatfs_args /* {
+ struct sys_fstatfs_args /* {
syscallarg(int) fd;
syscallarg(struct statfs *) buf;
} */ *uap = v;
struct file *fp;
struct mount *mp;
- register struct statfs *sp;
+ struct statfs *sp;
int error;
+ struct statfs sb;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
mp = ((struct vnode *)fp->f_data)->v_mount;
sp = &mp->mnt_stat;
- if (error = VFS_STATFS(mp, sp, p))
+ error = VFS_STATFS(mp, sp, p);
+ FRELE(fp);
+ if (error)
return (error);
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
+#if notyet
+ if (mp->mnt_flag & MNT_SOFTDEP)
+ sp->f_eflags = STATFS_SOFTUPD;
+#endif
+ /* Don't let non-root see filesystem id (for NFS security) */
+ if (suser(p->p_ucred, &p->p_acflag)) {
+ bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
+ sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
+ sp = &sb;
+ }
return (copyout((caddr_t)sp, (caddr_t)SCARG(uap, buf), sizeof(*sp)));
}
/*
* Get statistics on all filesystems.
*/
+int
sys_getfsstat(p, v, retval)
struct proc *p;
void *v;
@@ -543,37 +657,59 @@
{
register struct sys_getfsstat_args /* {
syscallarg(struct statfs *) buf;
- syscallarg(long) bufsize;
+ syscallarg(size_t) bufsize;
syscallarg(int) flags;
} */ *uap = v;
- register struct mount *mp, *nmp;
+ register struct mount *mp *nmp;
register struct statfs *sp;
+ struct statfs sb;
caddr_t sfsp;
- long count, maxcount, error;
+ size_t count, maxcount;
+ int error, flags = SCARG(uap, flags);
maxcount = SCARG(uap, bufsize) / sizeof(struct statfs);
sfsp = (caddr_t)SCARG(uap, buf);
- for (count = 0,
- mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) {
- nmp = mp->mnt_list.cqe_next;
- if (sfsp && count < maxcount &&
- ((mp->mnt_flag & MNT_MLOCK) == 0)) {
+ count = 0;
+ simple_lock(&mountlist_slock);
+ TAILQ_FOREACH_REVERSE_SAFE(mp, &mountlist, mnt_list, nmp) {
+ if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock, p))
+ continue;
+ if (sfsp && count < maxcount) {
sp = &mp->mnt_stat;
- /*
- * If MNT_NOWAIT is specified, do not refresh the
- * fsstat cache. MNT_WAIT overrides MNT_NOWAIT.
- */
- if (((SCARG(uap, flags) & MNT_NOWAIT) == 0 ||
- (SCARG(uap, flags) & MNT_WAIT)) &&
- (error = VFS_STATFS(mp, sp, p)))
- continue;
+
+ /* Refresh stats unless MNT_NOWAIT is specified */
+ if (flags != MNT_NOWAIT &&
+ flags != MNT_LAZY &&
+ (flags == MNT_WAIT ||
+ flags == 0) &&
+ (error = VFS_STATFS(mp, sp, p))) {
+ simple_lock(&mountlist_slock);
+ vfs_unbusy(mp, p);
+ continue;
+ }
+
sp->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
- if (error = copyout((caddr_t)sp, sfsp, sizeof(*sp)))
+#if notyet
+ if (mp->mnt_flag & MNT_SOFTDEP)
+ sp->f_eflags = STATFS_SOFTUPD;
+#endif
+ if (suser(p->p_ucred, &p->p_acflag)) {
+ bcopy((caddr_t)sp, (caddr_t)&sb, sizeof(sb));
+ sb.f_fsid.val[0] = sb.f_fsid.val[1] = 0;
+ sp = &sb;
+ }
+ error = copyout((caddr_t)sp, sfsp, sizeof(*sp));
+ if (error) {
+ vfs_unbusy(mp, p);
return (error);
+ }
sfsp += sizeof(*sp);
}
count++;
+ simple_lock(&mountlist_slock);
+ vfs_unbusy(mp, p);
}
+ simple_unlock(&mountlist_slock);
if (sfsp && count > maxcount)
*retval = maxcount;
else
@@ -585,6 +721,7 @@
* Change current working directory to a given file descriptor.
*/
/* ARGSUSED */
+int
sys_fchdir(p, v, retval)
struct proc *p;
void *v;
@@ -593,37 +730,38 @@
struct sys_fchdir_args /* {
syscallarg(int) fd;
} */ *uap = v;
- register struct filedesc *fdp = p->p_fd;
+ struct filedesc *fdp = p->p_fd;
struct vnode *vp, *tdp;
struct mount *mp;
struct file *fp;
int error;
- if (error = getvnode(fdp, SCARG(uap, fd), &fp))
+ if ((error = getvnode(fdp, SCARG(uap, fd), &fp)) != 0)
return (error);
vp = (struct vnode *)fp->f_data;
VREF(vp);
- VOP_LOCK(vp);
+ FRELE(fp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_type != VDIR)
error = ENOTDIR;
else
error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
+
while (!error && (mp = vp->v_mountedhere) != NULL) {
- if (mp->mnt_flag & MNT_MLOCK) {
- mp->mnt_flag |= MNT_MWAIT;
- sleep((caddr_t)mp, PVFS);
+ if (vfs_busy(mp, 0, 0, p))
continue;
- }
- if (error = VFS_ROOT(mp, &tdp))
+ error = VFS_ROOT(mp, &tdp);
+ vfs_unbusy(mp, p);
+ if (error)
break;
vput(vp);
vp = tdp;
}
- VOP_UNLOCK(vp);
if (error) {
- vrele(vp);
+ vput(vp);
return (error);
}
+ VOP_UNLOCK(vp, 0, p);
vrele(fdp->fd_cdir);
fdp->fd_cdir = vp;
return (0);
@@ -633,6 +771,7 @@
* Change current working directory (``.'').
*/
/* ARGSUSED */
+int
sys_chdir(p, v, retval)
struct proc *p;
void *v;
@@ -647,7 +786,7 @@
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = change_dir(&nd, p))
+ if ((error = change_dir(&nd, p)) != 0)
return (error);
vrele(fdp->fd_cdir);
fdp->fd_cdir = nd.ni_vp;
@@ -658,6 +797,7 @@
* Change notion of root (``/'') directory.
*/
/* ARGSUSED */
+int
sys_chroot(p, v, retval)
struct proc *p;
void *v;
@@ -670,14 +810,22 @@
int error;
struct nameidata nd;
- if (error = suser(p->p_ucred, &p->p_acflag))
+ if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
return (error);
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = change_dir(&nd, p))
+ if ((error = change_dir(&nd, p)) != 0)
return (error);
- if (fdp->fd_rdir != NULL)
+ if (fdp->fd_rdir != NULL) {
+ /*
+ * A chroot() done inside a changed root environment does
+ * an automatic chdir to avoid the out-of-tree experience.
+ */
vrele(fdp->fd_rdir);
+ vrele(fdp->fd_cdir);
+ VREF(nd.ni_vp);
+ fdp->fd_cdir = nd.ni_vp;
+ }
fdp->fd_rdir = nd.ni_vp;
return (0);
}
@@ -693,16 +841,17 @@
struct vnode *vp;
int error;
- if (error = namei(ndp))
+ if ((error = namei(ndp)) != 0)
return (error);
vp = ndp->ni_vp;
if (vp->v_type != VDIR)
error = ENOTDIR;
else
error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
- VOP_UNLOCK(vp);
if (error)
- vrele(vp);
+ vput(vp);
+ else
+ VOP_UNLOCK(vp, 0, p);
return (error);
}
@@ -710,45 +859,50 @@
* Check permissions, allocate an open file structure,
* and call the device open routine if any.
*/
+int
sys_open(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_open_args /* {
+ struct sys_open_args /* {
syscallarg(char *) path;
syscallarg(int) flags;
syscallarg(int) mode;
} */ *uap = v;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
- register struct vnode *vp;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp;
+ struct vattr vattr;
int flags, cmode;
- struct file *nfp;
- int type, indx, error;
+ int type, indx, error, localtrunc = 0;
struct flock lf;
struct nameidata nd;
- extern struct fileops vnops;
- if (error = falloc(p, &nfp, &indx))
+ if ((error = falloc(p, &fp, &indx)) != 0)
return (error);
- fp = nfp;
+
flags = FFLAGS(SCARG(uap, flags));
cmode = ((SCARG(uap, mode) &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
p->p_dupfd = -indx - 1; /* XXX check for fdopen */
- if (error = vn_open(&nd, flags, cmode)) {
- ffree(fp);
+ if ((flags & O_TRUNC) && (flags & (O_EXLOCK | O_SHLOCK))) {
+ localtrunc = 1;
+ flags &= ~O_TRUNC; /* Must do truncate ourselves */
+ }
+ if ((error = vn_open(&nd, flags, cmode)) != 0) {
if ((error == ENODEV || error == ENXIO) &&
p->p_dupfd >= 0 && /* XXX from fdopen */
(error =
dupfdopen(fdp, indx, p->p_dupfd, flags, error)) == 0) {
+ closef(fp, p);
*retval = indx;
return (0);
}
if (error == ERESTART)
error = EINTR;
- fdp->fd_ofiles[indx] = NULL;
+ fdremove(fdp, indx);
+ closef(fp, p);
return (error);
}
p->p_dupfd = 0;
@@ -768,189 +922,463 @@
type = F_FLOCK;
if ((flags & FNONBLOCK) == 0)
type |= F_WAIT;
- VOP_UNLOCK(vp);
- if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) {
- (void) vn_close(vp, fp->f_flag, fp->f_cred, p);
- ffree(fp);
- fdp->fd_ofiles[indx] = NULL;
+ VOP_UNLOCK(vp, 0, p);
+ error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type);
+ if (error) {
+ /* closef will vn_close the file for us. */
+ fdremove(fdp, indx);
+ closef(fp, p);
return (error);
}
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
fp->f_flag |= FHASLOCK;
}
- VOP_UNLOCK(vp);
+ if (localtrunc) {
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ if ((fp->f_flag & FWRITE) == 0)
+ error = EACCES;
+ else if (vp->v_mount->mnt_flag & MNT_RDONLY)
+ error = EROFS;
+ else if (vp->v_type == VDIR)
+ error = EISDIR;
+ else if ((error = vn_writechk(vp)) == 0) {
+ VATTR_NULL(&vattr);
+ vattr.va_size = 0;
+ error = VOP_SETATTR(vp, &vattr, fp->f_cred, p);
+ }
+ if (error) {
+ VOP_UNLOCK(vp, 0, p);
+ /* closef will close the file for us. */
+ fdremove(fdp, indx);
+ closef(fp, p);
+ return (error);
+ }
+ }
+ VOP_UNLOCK(vp, 0, p);
*retval = indx;
+ FILE_SET_MATURE(fp);
return (0);
}
/*
- * Create a special file.
+ * Get file handle system call
*/
-/* ARGSUSED */
-sys_mknod(p, v, retval)
+int
+sys_getfh(p, v, retval)
struct proc *p;
- void *v;
+ register void *v;
register_t *retval;
{
- register struct sys_mknod_args /* {
- syscallarg(char *) path;
- syscallarg(int) mode;
- syscallarg(int) dev;
+ register struct sys_getfh_args /* {
+ syscallarg(char *) fname;
+ syscallarg(fhandle_t *) fhp;
} */ *uap = v;
register struct vnode *vp;
- struct vattr vattr;
+ fhandle_t fh;
int error;
- int whiteout;
struct nameidata nd;
- if (error = suser(p->p_ucred, &p->p_acflag))
+ /*
+ * Must be super user
+ */
+ error = suser(p->p_ucred, &p->p_acflag);
+ if (error)
return (error);
- NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
+ SCARG(uap, fname), p);
+ error = namei(&nd);
+ if (error)
return (error);
vp = nd.ni_vp;
- if (vp != NULL)
- error = EEXIST;
- else {
- VATTR_NULL(&vattr);
- vattr.va_mode = (SCARG(uap, mode) & ALLPERMS) &~ p->p_fd->fd_cmask;
- vattr.va_rdev = SCARG(uap, dev);
- whiteout = 0;
-
- switch (SCARG(uap, mode) & S_IFMT) {
- case S_IFMT: /* used by badsect to flag bad sectors */
- vattr.va_type = VBAD;
- break;
- case S_IFCHR:
- vattr.va_type = VCHR;
- break;
- case S_IFBLK:
- vattr.va_type = VBLK;
- break;
- case S_IFWHT:
- whiteout = 1;
- break;
- default:
- error = EINVAL;
- break;
- }
- }
- if (!error) {
- VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
- if (whiteout) {
- error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE);
- if (error)
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
- } else {
- error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp,
- &nd.ni_cnd, &vattr);
- }
- } else {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (vp)
- vrele(vp);
- }
+ bzero((caddr_t)&fh, sizeof(fh));
+ fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
+ error = VFS_VPTOFH(vp, &fh.fh_fid);
+ vput(vp);
+ if (error)
+ return (error);
+ error = copyout((caddr_t)&fh, (caddr_t)SCARG(uap, fhp), sizeof (fh));
return (error);
}
/*
- * Create a named pipe.
+ * Open a file given a file handle.
+ *
+ * Check permissions, allocate an open file structure,
+ * and call the device open routine if any.
*/
-/* ARGSUSED */
-sys_mkfifo(p, v, retval)
+int
+sys_fhopen(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_mkfifo_args /* {
- syscallarg(char *) path;
- syscallarg(int) mode;
+ register struct sys_fhopen_args /* {
+ syscallarg(const fhandle_t *) fhp;
+ syscallarg(int) flags;
} */ *uap = v;
- struct vattr vattr;
- int error;
- struct nameidata nd;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp = NULL;
+ struct mount *mp;
+ struct ucred *cred = p->p_ucred;
+ int flags;
+ int type, indx, error=0;
+ struct flock lf;
+ struct vattr va;
+ fhandle_t fh;
-#ifndef FIFO
- return (EOPNOTSUPP);
-#else
- NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ /*
+ * Must be super user
+ */
+ if ((error = suser(p->p_ucred, &p->p_acflag)))
return (error);
- if (nd.ni_vp != NULL) {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- vrele(nd.ni_vp);
- return (EEXIST);
- }
- VATTR_NULL(&vattr);
- vattr.va_type = VFIFO;
- vattr.va_mode = (SCARG(uap, mode) & ALLPERMS) &~ p->p_fd->fd_cmask;
- VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
- return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr));
-#endif /* FIFO */
-}
-/*
- * Make a hard file link.
- */
-/* ARGSUSED */
-sys_link(p, v, retval)
- struct proc *p;
- void *v;
- register_t *retval;
-{
- register struct sys_link_args /* {
- syscallarg(char *) path;
- syscallarg(char *) link;
- } */ *uap = v;
- register struct vnode *vp;
- struct nameidata nd;
- int error;
+ flags = FFLAGS(SCARG(uap, flags));
+ if ((flags & (FREAD | FWRITE)) == 0)
+ return (EINVAL);
+ if ((flags & O_CREAT))
+ return (EINVAL);
- NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = falloc(p, &fp, &indx)) != 0)
return (error);
- vp = nd.ni_vp;
- if (vp->v_type != VDIR ||
- (error = suser(p->p_ucred, &p->p_acflag)) == 0) {
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT;
- nd.ni_dirp = SCARG(uap, link);
- if ((error = namei(&nd)) == 0) {
- if (nd.ni_vp != NULL)
- error = EEXIST;
- if (!error) {
- VOP_LEASE(nd.ni_dvp, p, p->p_ucred,
- LEASE_WRITE);
- VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
- } else {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vrele(nd.ni_vp);
- }
- }
+
+ if ((error = copyin(SCARG(uap, fhp), &fh, sizeof(fhandle_t))) != 0)
+ goto bad;
+
+ if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) {
+ error = ESTALE;
+ goto bad;
}
- vrele(vp);
- return (error);
-}
+
+ if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp)) != 0) {
+ vp = NULL; /* most likely unnecessary sanity for bad: */
+ goto bad;
+ }
+
+ /* Now do an effective vn_open */
+
+ if (vp->v_type == VSOCK) {
+ error = EOPNOTSUPP;
+ goto bad;
+ }
+ if (flags & FREAD) {
+ if ((error = VOP_ACCESS(vp, VREAD, cred, p)) != 0)
+ goto bad;
+ }
+ if (flags & (FWRITE | O_TRUNC)) {
+ if (vp->v_type == VDIR) {
+ error = EISDIR;
+ goto bad;
+ }
+ if ((error = vn_writechk(vp)) != 0 ||
+ (error = VOP_ACCESS(vp, VWRITE, cred, p)) != 0)
+ goto bad;
+ }
+ if (flags & O_TRUNC) {
+ VOP_UNLOCK(vp, 0, p); /* XXX */
+ VOP_LEASE(vp, p, cred, LEASE_WRITE);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); /* XXX */
+ VATTR_NULL(&va);
+ va.va_size = 0;
+ if ((error = VOP_SETATTR(vp, &va, cred, p)) != 0)
+ goto bad;
+ }
+ if ((error = VOP_OPEN(vp, flags, cred, p)) != 0)
+ goto bad;
+ if (flags & FWRITE)
+ vp->v_writecount++;
+
+ /* done with modified vn_open, now finish what sys_open does. */
+
+ fp->f_flag = flags & FMASK;
+ fp->f_type = DTYPE_VNODE;
+ fp->f_ops = &vnops;
+ fp->f_data = (caddr_t)vp;
+ if (flags & (O_EXLOCK | O_SHLOCK)) {
+ lf.l_whence = SEEK_SET;
+ lf.l_start = 0;
+ lf.l_len = 0;
+ if (flags & O_EXLOCK)
+ lf.l_type = F_WRLCK;
+ else
+ lf.l_type = F_RDLCK;
+ type = F_FLOCK;
+ if ((flags & FNONBLOCK) == 0)
+ type |= F_WAIT;
+ VOP_UNLOCK(vp, 0, p);
+ error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type);
+ if (error) {
+ /* closef will vn_close the file for us. */
+ fdremove(fdp, indx);
+ closef(fp, p);
+ return (error);
+ }
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+ fp->f_flag |= FHASLOCK;
+ }
+ VOP_UNLOCK(vp, 0, p);
+ *retval = indx;
+ FILE_SET_MATURE(fp);
+ return (0);
+
+bad:
+ fdremove(fdp, indx);
+ closef(fp, p);
+ if (vp != NULL)
+ vput(vp);
+ return (error);
+}
+
+/* ARGSUSED */
+int
+sys_fhstat(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_fhstat_args /* {
+ syscallarg(const fhandle_t *) fhp;
+ syscallarg(struct stat *) sb;
+ } */ *uap = v;
+ struct stat sb;
+ int error;
+ fhandle_t fh;
+ struct mount *mp;
+ struct vnode *vp;
+
+ /*
+ * Must be super user
+ */
+ if ((error = suser(p->p_ucred, &p->p_acflag)))
+ return (error);
+
+ if ((error = copyin(SCARG(uap, fhp), &fh, sizeof(fhandle_t))) != 0)
+ return (error);
+
+ if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
+ return (ESTALE);
+ if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp)))
+ return (error);
+ error = vn_stat(vp, &sb, p);
+ vput(vp);
+ if (error)
+ return (error);
+ error = copyout(&sb, SCARG(uap, sb), sizeof(sb));
+ return (error);
+}
+
+/* ARGSUSED */
+int
+sys_fhstatfs(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_fhstatfs_args /*
+ syscallarg(const fhandle_t *) fhp;
+ syscallarg(struct statfs *) buf;
+ } */ *uap = v;
+ struct statfs sp;
+ fhandle_t fh;
+ struct mount *mp;
+ struct vnode *vp;
+ int error;
+
+ /*
+ * Must be super user
+ */
+ if ((error = suser(p->p_ucred, &p->p_acflag)))
+ return (error);
+
+ if ((error = copyin(SCARG(uap, fhp), &fh, sizeof(fhandle_t))) != 0)
+ return (error);
+
+ if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
+ return (ESTALE);
+ if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp)))
+ return (error);
+ mp = vp->v_mount;
+ vput(vp);
+ if ((error = VFS_STATFS(mp, &sp, p)) != 0)
+ return (error);
+ sp.f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
+ return (copyout(&sp, SCARG(uap, buf), sizeof(sp)));
+}
+
+/*
+ * Create a special file.
+ */
+/* ARGSUSED */
+int
+sys_mknod(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_mknod_args /* {
+ syscallarg(char *) path;
+ syscallarg(int) mode;
+ syscallarg(int) dev;
+ } */ *uap = v;
+ register struct vnode *vp;
+ struct vattr vattr;
+ int error;
+ int whiteout = 0;
+ struct nameidata nd;
+
+ if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
+ return (error);
+ if (p->p_fd->fd_rdir)
+ return (EINVAL);
+ NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+ vp = nd.ni_vp;
+ if (vp != NULL)
+ error = EEXIST;
+ else {
+ VATTR_NULL(&vattr);
+ vattr.va_mode = (SCARG(uap, mode) & ALLPERMS) &~ p->p_fd->fd_cmask;
+ vattr.va_rdev = SCARG(uap, dev);
+ whiteout = 0;
+
+ switch (SCARG(uap, mode) & S_IFMT) {
+ case S_IFMT: /* used by badsect to flag bad sectors */
+ vattr.va_type = VBAD;
+ break;
+ case S_IFCHR:
+ vattr.va_type = VCHR;
+ break;
+ case S_IFBLK:
+ vattr.va_type = VBLK;
+ break;
+ case S_IFWHT:
+ whiteout = 1;
+ break;
+ default:
+ error = EINVAL;
+ break;
+ }
+ }
+ if (!error) {
+ VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
+ if (whiteout) {
+ error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, CREATE);
+ if (error)
+ VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
+ vput(nd.ni_dvp);
+ } else {
+ error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp,
+ &nd.ni_cnd, &vattr);
+ }
+ } else {
+ VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
+ if (nd.ni_dvp == vp)
+ vrele(nd.ni_dvp);
+ else
+ vput(nd.ni_dvp);
+ if (vp)
+ vrele(vp);
+ }
+ return (error);
+}
+
+/*
+ * Create a named pipe.
+ */
+/* ARGSUSED */
+int
+sys_mkfifo(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+#ifndef FIFO
+ return (EOPNOTSUPP);
+#else
+ register struct sys_mkfifo_args /* {
+ syscallarg(char *) path;
+ syscallarg(int) mode;
+ } */ *uap = v;
+ struct vattr vattr;
+ int error;
+ struct nameidata nd;
+
+ NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+ if (nd.ni_vp != NULL) {
+ VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
+ if (nd.ni_dvp == nd.ni_vp)
+ vrele(nd.ni_dvp);
+ else
+ vput(nd.ni_dvp);
+ vrele(nd.ni_vp);
+ return (EEXIST);
+ }
+ VATTR_NULL(&vattr);
+ vattr.va_type = VFIFO;
+ vattr.va_mode = (SCARG(uap, mode) & ALLPERMS) &~ p->p_fd->fd_cmask;
+ VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
+ return (VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr));
+#endif /* FIFO */
+}
+
+/*
+ * Make a hard file link.
+ */
+/* ARGSUSED */
+int
+sys_link(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_link_args /* {
+ syscallarg(char *) path;
+ syscallarg(char *) link;
+ } */ *uap = v;
+ register struct vnode *vp;
+ struct nameidata nd;
+ int error;
+ int flags;
+
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+ vp = nd.ni_vp;
+
+ flags = LOCKPARENT;
+ if (vp->v_type == VDIR) {
+ flags |= STRIPSLASHES;
+ }
+
+ NDINIT(&nd, CREATE, flags, UIO_USERSPACE, SCARG(uap, link), p);
+ if ((error = namei(&nd)) != 0)
+ goto out;
+ if (nd.ni_vp) {
+ VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
+ if (nd.ni_dvp == nd.ni_vp)
+ vrele(nd.ni_dvp);
+ else
+ vput(nd.ni_dvp);
+ vrele(nd.ni_vp);
+ error = EEXIST;
+ goto out;
+ }
+ VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ error = VOP_LINK(nd.ni_dvp, vp, &nd.ni_cnd);
+out:
+ vrele(vp);
+ return (error);
+}
/*
* Make a symbolic link.
*/
/* ARGSUSED */
+int
sys_symlink(p, v, retval)
struct proc *p;
void *v;
@@ -966,10 +1394,11 @@
struct nameidata nd;
MALLOC(path, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
- if (error = copyinstr(SCARG(uap, path), path, MAXPATHLEN, (size_t *)0))
+ error = copyinstr(SCARG(uap, path), path, MAXPATHLEN, NULL);
+ if (error)
goto out;
NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, link), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
goto out;
if (nd.ni_vp) {
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
@@ -994,6 +1423,7 @@
* Delete a whiteout from the filesystem.
*/
/* ARGSUSED */
+int
sys_undelete(p, v, retval)
struct proc *p;
void *v;
@@ -1023,7 +1453,7 @@
}
VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
- if (error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, DELETE))
+ if ((error = VOP_WHITEOUT(nd.ni_dvp, &nd.ni_cnd, DELETE)) != 0)
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
vput(nd.ni_dvp);
return (error);
@@ -1033,6 +1463,7 @@
* Delete a name from the filesystem.
*/
/* ARGSUSED */
+int
sys_unlink(p, v, retval)
struct proc *p;
void *v;
@@ -1045,42 +1476,39 @@
int error;
struct nameidata nd;
- NDINIT(&nd, DELETE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE,
+ SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
- VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
-
- if (vp->v_type != VDIR ||
- (error = suser(p->p_ucred, &p->p_acflag)) == 0) {
- /*
- * The root of a mounted filesystem cannot be deleted.
- */
- if (vp->v_flag & VROOT)
- error = EBUSY;
- else
- (void)vnode_pager_uncache(vp);
- }
- if (!error) {
- VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
- error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
- } else {
+ /*
+ * The root of a mounted filesystem cannot be deleted.
+ */
+ if (vp->v_flag & VROOT) {
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
if (nd.ni_dvp == vp)
vrele(nd.ni_dvp);
else
vput(nd.ni_dvp);
- if (vp != NULLVP)
- vput(vp);
+ vput(vp);
+ error = EBUSY;
+ goto out;
}
+
+ (void)uvm_vnp_uncache(vp);
+
+ VOP_LEASE(nd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
+out:
return (error);
}
/*
* Reposition read/write file offset.
*/
+int
sys_lseek(p, v, retval)
struct proc *p;
void *v;
@@ -1096,24 +1524,38 @@
register struct filedesc *fdp = p->p_fd;
register struct file *fp;
struct vattr vattr;
- int error;
+ struct vnode *vp;
+ int error, special;
- if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
+ if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL)
return (EBADF);
if (fp->f_type != DTYPE_VNODE)
return (ESPIPE);
+ vp = (struct vnode *)fp->f_data;
+ if (vp->v_type == VFIFO)
+ return (ESPIPE);
+ if (vp->v_type == VCHR)
+ special = 1;
+ else
+ special = 0;
switch (SCARG(uap, whence)) {
- case L_INCR:
+ case SEEK_CUR:
+ if (!special && fp->f_offset + SCARG(uap, offset) < 0)
+ return (EINVAL);
fp->f_offset += SCARG(uap, offset);
break;
- case L_XTND:
- if (error =
- VOP_GETATTR((struct vnode *)fp->f_data, &vattr, cred, p))
+ case SEEK_END:
+ error = VOP_GETATTR((struct vnode *)fp->f_data, &vattr,
+ cred, p);
+ if (error)
return (error);
+ if (!special && (off_t)vattr.va_size + SCARG(uap, offset) < 0)
+ return (EINVAL);
fp->f_offset = SCARG(uap, offset) + vattr.va_size;
break;
- case L_SET:
+ case SEEK_SET:
+ if (!special && SCARG(uap, offset) < 0)
+ return (EINVAL);
fp->f_offset = SCARG(uap, offset);
break;
default:
@@ -1126,6 +1568,7 @@
/*
* Check access permissions.
*/
+int
sys_access(p, v, retval)
struct proc *p;
void *v;
@@ -1140,13 +1583,15 @@
int error, flags, t_gid, t_uid;
struct nameidata nd;
+ if (SCARG(uap, flags) & ~(R_OK | W_OK | X_OK))
+ return (EINVAL);
t_uid = cred->cr_uid;
t_gid = cred->cr_gid;
cred->cr_uid = p->p_cred->p_ruid;
cred->cr_gid = p->p_cred->p_rgid;
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
goto out1;
vp = nd.ni_vp;
@@ -1173,6 +1618,7 @@
* Get file status; this version follows links.
*/
/* ARGSUSED */
+int
sys_stat(p, v, retval)
struct proc *p;
void *v;
@@ -1188,12 +1634,15 @@
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
error = vn_stat(nd.ni_vp, &sb, p);
vput(nd.ni_vp);
if (error)
return (error);
+ /* Don't let non-root see generation numbers (for NFS security) */
+ if (suser(p->p_ucred, &p->p_acflag))
+ sb.st_gen = 0;
error = copyout((caddr_t)&sb, (caddr_t)SCARG(uap, ub), sizeof (sb));
return (error);
}
@@ -1202,6 +1651,7 @@
* Get file status; this version does not follow links.
*/
/* ARGSUSED */
+int
sys_lstat(p, v, retval)
struct proc *p;
void *v;
@@ -1211,47 +1661,21 @@
syscallarg(char *) path;
syscallarg(struct stat *) ub;
} */ *uap = v;
+ struct stat sb;
int error;
- struct vnode *vp, *dvp;
- struct stat sb, sb1;
struct nameidata nd;
- NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKPARENT, UIO_USERSPACE,
+ NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
- /*
- * For symbolic links, always return the attributes of its
- * containing directory, except for mode, size, and links.
- */
- vp = nd.ni_vp;
- dvp = nd.ni_dvp;
- if (vp->v_type != VLNK) {
- if (dvp == vp)
- vrele(dvp);
- else
- vput(dvp);
- error = vn_stat(vp, &sb, p);
- vput(vp);
- if (error)
- return (error);
- } else {
- error = vn_stat(dvp, &sb, p);
- vput(dvp);
- if (error) {
- vput(vp);
- return (error);
- }
- error = vn_stat(vp, &sb1, p);
- vput(vp);
- if (error)
- return (error);
- sb.st_mode &= ~S_IFDIR;
- sb.st_mode |= S_IFLNK;
- sb.st_nlink = sb1.st_nlink;
- sb.st_size = sb1.st_size;
- sb.st_blocks = sb1.st_blocks;
- }
+ error = vn_stat(nd.ni_vp, &sb, p);
+ vput(nd.ni_vp);
+ if (error)
+ return (error);
+ /* Don't let non-root see generation numbers (for NFS security) */
+ if (suser(p->p_ucred, &p->p_acflag))
+ sb.st_gen = 0;
error = copyout((caddr_t)&sb, (caddr_t)SCARG(uap, ub), sizeof (sb));
return (error);
}
@@ -1260,6 +1684,7 @@
* Get configurable pathname variables.
*/
/* ARGSUSED */
+int
sys_pathconf(p, v, retval)
struct proc *p;
void *v;
@@ -1274,7 +1699,7 @@
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
error = VOP_PATHCONF(nd.ni_vp, SCARG(uap, name), retval);
vput(nd.ni_vp);
@@ -1285,6 +1710,7 @@
* Return target name of a symbolic link.
*/
/* ARGSUSED */
+int
sys_readlink(p, v, retval)
struct proc *p;
void *v;
@@ -1293,7 +1719,7 @@
register struct sys_readlink_args /* {
syscallarg(char *) path;
syscallarg(char *) buf;
- syscallarg(int) count;
+ syscallarg(size_t) count;
} */ *uap = v;
register struct vnode *vp;
struct iovec aiov;
@@ -1303,7 +1729,7 @@
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
if (vp->v_type != VLNK)
@@ -1329,6 +1755,7 @@
* Change flags of a file given a path name.
*/
/* ARGSUSED */
+int
sys_chflags(p, v, retval)
struct proc *p;
void *v;
@@ -1336,7 +1763,7 @@
{
register struct sys_chflags_args /* {
syscallarg(char *) path;
- syscallarg(int) flags;
+ syscallarg(unsigned int) flags;
} */ *uap = v;
register struct vnode *vp;
struct vattr vattr;
@@ -1344,18 +1771,29 @@
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
+ else if (SCARG(uap, flags) == VNOVAL)
+ error = EINVAL;
else {
+ if (suser(p->p_ucred, &p->p_acflag)) {
+ if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) != 0)
+ goto out;
+ if (vattr.va_type == VCHR || vattr.va_type == VBLK) {
+ error = EINVAL;
+ goto out;
+ }
+ }
VATTR_NULL(&vattr);
vattr.va_flags = SCARG(uap, flags);
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
+out:
vput(vp);
return (error);
}
@@ -1364,33 +1802,47 @@
* Change flags of a file given a file descriptor.
*/
/* ARGSUSED */
+int
sys_fchflags(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_fchflags_args /* {
+ struct sys_fchflags_args /* {
syscallarg(int) fd;
- syscallarg(int) flags;
+ syscallarg(unsigned int) flags;
} */ *uap = v;
struct vattr vattr;
struct vnode *vp;
struct file *fp;
int error;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
vp = (struct vnode *)fp->f_data;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
+ else if (SCARG(uap, flags) == VNOVAL)
+ error = EINVAL;
else {
+ if (suser(p->p_ucred, &p->p_acflag)) {
+ if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p))
+ != 0)
+ goto out;
+ if (vattr.va_type == VCHR || vattr.va_type == VBLK) {
+ error = EINVAL;
+ goto out;
+ }
+ }
VATTR_NULL(&vattr);
vattr.va_flags = SCARG(uap, flags);
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
- VOP_UNLOCK(vp);
+out:
+ VOP_UNLOCK(vp, 0, p);
+ FRELE(fp);
return (error);
}
@@ -1398,6 +1850,7 @@
* Change mode of a file given path name.
*/
/* ARGSUSED */
+int
sys_chmod(p, v, retval)
struct proc *p;
void *v;
@@ -1412,12 +1865,15 @@
int error;
struct nameidata nd;
+ if (SCARG(uap, mode) & ~(S_IFMT | ALLPERMS))
+ return (EINVAL);
+
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
else {
@@ -1433,12 +1889,13 @@
* Change mode of a file given a file descriptor.
*/
/* ARGSUSED */
+int
sys_fchmod(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_fchmod_args /* {
+ struct sys_fchmod_args /* {
syscallarg(int) fd;
syscallarg(int) mode;
} */ *uap = v;
@@ -1447,11 +1904,14 @@
struct file *fp;
int error;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if (SCARG(uap, mode) & ~(S_IFMT | ALLPERMS))
+ return (EINVAL);
+
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
vp = (struct vnode *)fp->f_data;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
else {
@@ -1459,7 +1919,8 @@
vattr.va_mode = SCARG(uap, mode) & ALLPERMS;
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
- VOP_UNLOCK(vp);
+ VOP_UNLOCK(vp, 0, p);
+ FRELE(fp);
return (error);
}
@@ -1467,6 +1928,7 @@
* Set ownership given a path name.
*/
/* ARGSUSED */
+int
sys_chown(p, v, retval)
struct proc *p;
void *v;
@@ -1481,21 +1943,87 @@
struct vattr vattr;
int error;
struct nameidata nd;
+ u_short mode;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
+ return (error);
+ vp = nd.ni_vp;
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+ if (vp->v_mount->mnt_flag & MNT_RDONLY)
+ error = EROFS;
+ else {
+ if ((SCARG(uap, uid) != -1 || SCARG(uap, gid) != -1) &&
+ (suser(p->p_ucred, &p->p_acflag) || suid_clear)) {
+ error = VOP_GETATTR(vp, &vattr, p->p_ucred, p);
+ if (error)
+ goto out;
+ mode = vattr.va_mode & ~(VSUID | VSGID);
+ if (mode == vattr.va_mode)
+ mode = VNOVAL;
+ }
+ else
+ mode = VNOVAL;
+ VATTR_NULL(&vattr);
+ vattr.va_uid = SCARG(uap, uid);
+ vattr.va_gid = SCARG(uap, gid);
+ vattr.va_mode = mode;
+ error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
+ }
+out:
+ vput(vp);
+ return (error);
+}
+
+/*
+ * Set ownership given a path name, without following links.
+ */
+/* ARGSUSED */
+int
+sys_lchown(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_lchown_args /* {
+ syscallarg(char *) path;
+ syscallarg(int) uid;
+ syscallarg(int) gid;
+ } */ *uap = v;
+ register struct vnode *vp;
+ struct vattr vattr;
+ int error;
+ struct nameidata nd;
+ u_short mode;
+
+ NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
else {
+ if ((SCARG(uap, uid) != -1 || SCARG(uap, gid) != -1) &&
+ (suser(p->p_ucred, &p->p_acflag) || suid_clear)) {
+ error = VOP_GETATTR(vp, &vattr, p->p_ucred, p);
+ if (error)
+ goto out;
+ mode = vattr.va_mode & ~(VSUID | VSGID);
+ if (mode == vattr.va_mode)
+ mode = VNOVAL;
+ }
+ else
+ mode = VNOVAL;
VATTR_NULL(&vattr);
vattr.va_uid = SCARG(uap, uid);
vattr.va_gid = SCARG(uap, gid);
+ vattr.va_mode = mode;
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
+out:
vput(vp);
return (error);
}
@@ -1504,42 +2032,58 @@
* Set ownership given a file descriptor.
*/
/* ARGSUSED */
+int
sys_fchown(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_fchown_args /* {
+ struct sys_fchown_args /* {
syscallarg(int) fd;
syscallarg(int) uid;
syscallarg(int) gid;
} */ *uap = v;
- struct vattr vattr;
struct vnode *vp;
- struct file *fp;
+ struct vattr vattr;
int error;
+ struct file *fp;
+ u_short mode;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
vp = (struct vnode *)fp->f_data;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
else {
+ if ((SCARG(uap, uid) != -1 || SCARG(uap, gid) != -1) &&
+ (suser(p->p_ucred, &p->p_acflag) || suid_clear)) {
+ error = VOP_GETATTR(vp, &vattr, p->p_ucred, p);
+ if (error)
+ goto out;
+ mode = vattr.va_mode & ~(VSUID | VSGID);
+ if (mode == vattr.va_mode)
+ mode = VNOVAL;
+ } else
+ mode = VNOVAL;
VATTR_NULL(&vattr);
vattr.va_uid = SCARG(uap, uid);
vattr.va_gid = SCARG(uap, gid);
+ vattr.va_mode = mode;
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
- VOP_UNLOCK(vp);
+out:
+ VOP_UNLOCK(vp, 0, p);
+ FRELE(fp);
return (error);
}
/*
- * Set the access and modification times of a file.
+ * Set the access and modification times given a path name.
*/
/* ARGSUSED */
+int
sys_utimes(p, v, retval)
struct proc *p;
void *v;
@@ -1560,32 +2104,97 @@
microtime(&tv[0]);
tv[1] = tv[0];
vattr.va_vaflags |= VA_UTIMES_NULL;
- } else if (error = copyin((caddr_t)SCARG(uap, tptr), (caddr_t)tv,
- sizeof (tv)))
- return (error);
+ } else {
+ error = copyin((caddr_t)SCARG(uap, tptr), (caddr_t)tv,
+ sizeof (tv));
+ if (error)
+ return (error);
+ /* XXX workaround timeval matching the VFS constant VNOVAL */
+ if (tv[0].tv_sec == VNOVAL)
+ tv[0].tv_sec = VNOVAL - 1;
+ if (tv[1].tv_sec == VNOVAL)
+ tv[1].tv_sec = VNOVAL - 1;
+ }
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_mount->mnt_flag & MNT_RDONLY)
error = EROFS;
else {
- vattr.va_atime.ts_sec = tv[0].tv_sec;
- vattr.va_atime.ts_nsec = tv[0].tv_usec * 1000;
- vattr.va_mtime.ts_sec = tv[1].tv_sec;
- vattr.va_mtime.ts_nsec = tv[1].tv_usec * 1000;
+ vattr.va_atime.tv_sec = tv[0].tv_sec;
+ vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000;
+ vattr.va_mtime.tv_sec = tv[1].tv_sec;
+ vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000;
error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
}
vput(vp);
return (error);
}
+
+/*
+ * Set the access and modification times given a file descriptor.
+ */
+/* ARGSUSED */
+int
+sys_futimes(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ register struct sys_futimes_args /* {
+ syscallarg(int) fd;
+ syscallarg(struct timeval *) tptr;
+ } */ *uap = v;
+ struct vnode *vp;
+ struct timeval tv[2];
+ struct vattr vattr;
+ int error;
+ struct file *fp;
+
+ VATTR_NULL(&vattr);
+ if (SCARG(uap, tptr) == NULL) {
+ microtime(&tv[0]);
+ tv[1] = tv[0];
+ vattr.va_vaflags |= VA_UTIMES_NULL;
+ } else {
+ error = copyin((caddr_t)SCARG(uap, tptr), (caddr_t)tv,
+ sizeof (tv));
+ if (error)
+ return (error);
+ /* XXX workaround timeval matching the VFS constant VNOVAL */
+ if (tv[0].tv_sec == VNOVAL)
+ tv[0].tv_sec = VNOVAL - 1;
+ if (tv[1].tv_sec == VNOVAL)
+ tv[1].tv_sec = VNOVAL - 1;
+ }
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+ return (error);
+ vp = (struct vnode *)fp->f_data;
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+ if (vp->v_mount->mnt_flag & MNT_RDONLY)
+ error = EROFS;
+ else {
+ vattr.va_atime.tv_sec = tv[0].tv_sec;
+ vattr.va_atime.tv_nsec = tv[0].tv_usec * 1000;
+ vattr.va_mtime.tv_sec = tv[1].tv_sec;
+ vattr.va_mtime.tv_nsec = tv[1].tv_usec * 1000;
+ error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
+ }
+ VOP_UNLOCK(vp, 0, p);
+ FRELE(fp);
+ return (error);
+}
+
/*
* Truncate a file given its path name.
*/
/* ARGSUSED */
+int
sys_truncate(p, v, retval)
struct proc *p;
void *v;
@@ -1602,11 +2211,11 @@
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_type == VDIR)
error = EISDIR;
else if ((error = vn_writechk(vp)) == 0 &&
@@ -1623,12 +2232,13 @@
* Truncate a file given a file descriptor.
*/
/* ARGSUSED */
+int
sys_ftruncate(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_ftruncate_args /* {
+ struct sys_ftruncate_args /* {
syscallarg(int) fd;
syscallarg(int) pad;
syscallarg(off_t) length;
@@ -1638,13 +2248,15 @@
struct file *fp;
int error;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
- if ((fp->f_flag & FWRITE) == 0)
- return (EINVAL);
+ if ((fp->f_flag & FWRITE) == 0) {
+ error = EINVAL;
+ goto bad;
+ }
vp = (struct vnode *)fp->f_data;
VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
if (vp->v_type == VDIR)
error = EISDIR;
else if ((error = vn_writechk(vp)) == 0) {
@@ -1652,7 +2264,9 @@
vattr.va_size = SCARG(uap, length);
error = VOP_SETATTR(vp, &vattr, fp->f_cred, p);
}
- VOP_UNLOCK(vp);
+ VOP_UNLOCK(vp, 0, p);
+bad:
+ FRELE(fp);
return (error);
}
@@ -1660,6 +2274,7 @@
* Sync an open file.
*/
/* ARGSUSED */
+int
sys_fsync(p, v, retval)
struct proc *p;
void *v;
@@ -1668,16 +2283,22 @@
struct sys_fsync_args /* {
syscallarg(int) fd;
} */ *uap = v;
- register struct vnode *vp;
+ struct vnode *vp;
struct file *fp;
int error;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
return (error);
vp = (struct vnode *)fp->f_data;
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
error = VOP_FSYNC(vp, fp->f_cred, MNT_WAIT, p);
- VOP_UNLOCK(vp);
+#ifdef FFS_SOFTUPDATES
+ if (error == 0 && vp->v_mount && (vp->v_mount->mnt_flag & MNT_SOFTDEP))
+ error = softdep_fsync(vp);
+#endif
+
+ VOP_UNLOCK(vp, 0, p);
+ FRELE(fp);
return (error);
}
@@ -1686,6 +2307,7 @@
* or both not be directories. If target is a directory, it must be empty.
*/
/* ARGSUSED */
+int
sys_rename(p, v, retval)
struct proc *p;
void *v;
@@ -1698,15 +2320,24 @@
register struct vnode *tvp, *fvp, *tdvp;
struct nameidata fromnd, tond;
int error;
+ int flags;
NDINIT(&fromnd, DELETE, WANTPARENT | SAVESTART, UIO_USERSPACE,
SCARG(uap, from), p);
- if (error = namei(&fromnd))
+ if ((error = namei(&fromnd)) != 0)
return (error);
fvp = fromnd.ni_vp;
- NDINIT(&tond, RENAME, LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART,
+
+ flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART;
+ /*
+ * rename("foo/", "bar/"); is OK
+ */
+ if (fvp->v_type == VDIR)
+ flags |= STRIPSLASHES;
+
+ NDINIT(&tond, RENAME, flags,
UIO_USERSPACE, SCARG(uap, to), p);
- if (error = namei(&tond)) {
+ if ((error = namei(&tond)) != 0) {
VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
vrele(fromnd.ni_dvp);
vrele(fvp);
@@ -1727,21 +2358,19 @@
error = EINVAL;
/*
* If source is the same as the destination (that is the
- * same inode number with the same name in the same directory),
- * then there is nothing to do.
+ * same inode number)
*/
- if (fvp == tvp && fromnd.ni_dvp == tdvp &&
- fromnd.ni_cnd.cn_namelen == tond.ni_cnd.cn_namelen &&
- !bcmp(fromnd.ni_cnd.cn_nameptr, tond.ni_cnd.cn_nameptr,
- fromnd.ni_cnd.cn_namelen))
+ if (fvp == tvp)
error = -1;
out:
if (!error) {
VOP_LEASE(tdvp, p, p->p_ucred, LEASE_WRITE);
if (fromnd.ni_dvp != tdvp)
VOP_LEASE(fromnd.ni_dvp, p, p->p_ucred, LEASE_WRITE);
- if (tvp)
+ if (tvp) {
+ (void)uvm_vnp_uncache(tvp);
VOP_LEASE(tvp, p, p->p_ucred, LEASE_WRITE);
+ }
error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
} else {
@@ -1771,6 +2400,7 @@
* Make a directory file.
*/
/* ARGSUSED */
+int
sys_mkdir(p, v, retval)
struct proc *p;
void *v;
@@ -1785,8 +2415,9 @@
int error;
struct nameidata nd;
- NDINIT(&nd, CREATE, LOCKPARENT, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ NDINIT(&nd, CREATE, LOCKPARENT | STRIPSLASHES,
+ UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
if (vp != NULL) {
@@ -1812,6 +2443,7 @@
* Remove a directory file.
*/
/* ARGSUSED */
+int
sys_rmdir(p, v, retval)
struct proc *p;
void *v;
@@ -1826,7 +2458,7 @@
NDINIT(&nd, DELETE, LOCKPARENT | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
if (vp->v_type != VDIR) {
@@ -1837,7 +2469,7 @@
* No rmdir "." please.
*/
if (nd.ni_dvp == vp) {
- error = EINVAL;
+ error = EBUSY;
goto out;
}
/*
@@ -1864,32 +2496,39 @@
/*
* Read a block of directory entries in a file system independent format.
*/
+int
sys_getdirentries(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
- register struct sys_getdirentries_args /* {
+ struct sys_getdirentries_args /* {
syscallarg(int) fd;
syscallarg(char *) buf;
- syscallarg(u_int) count;
+ syscallarg(int) count;
syscallarg(long *) basep;
} */ *uap = v;
- register struct vnode *vp;
+ struct vnode *vp;
struct file *fp;
struct uio auio;
struct iovec aiov;
long loff;
int error, eofflag;
- if (error = getvnode(p->p_fd, SCARG(uap, fd), &fp))
- return (error);
- if ((fp->f_flag & FREAD) == 0)
- return (EBADF);
+ if (SCARG(uap, count) < 0)
+ return EINVAL;
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+ return (error);
+ if ((fp->f_flag & FREAD) == 0) {
+ error = EBADF;
+ goto bad;
+ }
vp = (struct vnode *)fp->f_data;
unionread:
- if (vp->v_type != VDIR)
- return (EINVAL);
+ if (vp->v_type != VDIR) {
+ error = EINVAL;
+ goto bad;
+ }
aiov.iov_base = SCARG(uap, buf);
aiov.iov_len = SCARG(uap, count);
auio.uio_iov = &aiov;
@@ -1898,57 +2537,19 @@
auio.uio_segflg = UIO_USERSPACE;
auio.uio_procp = p;
auio.uio_resid = SCARG(uap, count);
- VOP_LOCK(vp);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
loff = auio.uio_offset = fp->f_offset;
- error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, (u_long *)0, 0);
+ error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, 0, 0);
fp->f_offset = auio.uio_offset;
- VOP_UNLOCK(vp);
+ VOP_UNLOCK(vp, 0, p);
if (error)
- return (error);
-
-#ifdef UNION
-{
- extern int (**union_vnodeop_p)();
- extern struct vnode *union_dircache __P((struct vnode *));
-
+ goto bad;
if ((SCARG(uap, count) == auio.uio_resid) &&
- (vp->v_op == union_vnodeop_p)) {
- struct vnode *lvp;
-
- lvp = union_dircache(vp);
- if (lvp != NULLVP) {
- struct vattr va;
-
- /*
- * If the directory is opaque,
- * then don't show lower entries
- */
- error = VOP_GETATTR(vp, &va, fp->f_cred, p);
- if (va.va_flags & OPAQUE) {
- vput(lvp);
- lvp = NULL;
- }
- }
-
- if (lvp != NULLVP) {
- error = VOP_OPEN(lvp, FREAD, fp->f_cred, p);
- VOP_UNLOCK(lvp);
-
- if (error) {
- vrele(lvp);
- return (error);
- }
- fp->f_data = (caddr_t) lvp;
- fp->f_offset = 0;
- error = vn_close(vp, FREAD, fp->f_cred, p);
- if (error)
- return (error);
- vp = lvp;
- goto unionread;
- }
- }
-}
-#endif /* UNION */
+ union_check_p &&
+ (union_check_p(p, &vp, fp, auio, &error) != 0))
+ goto unionread;
+ if (error)
+ goto bad;
if ((SCARG(uap, count) == auio.uio_resid) &&
(vp->v_flag & VROOT) &&
@@ -1964,6 +2565,8 @@
error = copyout((caddr_t)&loff, (caddr_t)SCARG(uap, basep),
sizeof(long));
*retval = SCARG(uap, count) - auio.uio_resid;
+bad:
+ FRELE(fp);
return (error);
}
@@ -1983,7 +2586,7 @@
fdp = p->p_fd;
*retval = fdp->fd_cmask;
- fdp->fd_cmask = SCARG(uap, newmask) & ALLPERMS;
+ fdp->fd_cmask = SCARG(uap, newmask) & ACCESSPERMS;
return (0);
}
@@ -1992,6 +2595,7 @@
* away from vnode.
*/
/* ARGSUSED */
+int
sys_revoke(p, v, retval)
struct proc *p;
void *v;
@@ -2006,20 +2610,16 @@
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
- if (error = namei(&nd))
+ if ((error = namei(&nd)) != 0)
return (error);
vp = nd.ni_vp;
- if (vp->v_type != VCHR && vp->v_type != VBLK) {
- error = EINVAL;
- goto out;
- }
- if (error = VOP_GETATTR(vp, &vattr, p->p_ucred, p))
+ if ((error = VOP_GETATTR(vp, &vattr, p->p_ucred, p)) != 0)
goto out;
if (p->p_ucred->cr_uid != vattr.va_uid &&
(error = suser(p->p_ucred, &p->p_acflag)))
goto out;
- if (vp->v_usecount > 1 || (vp->v_flag & VALIASED))
- vgoneall(vp);
+ if (vp->v_usecount > 1 || (vp->v_flag & (VALIASED | VLAYER)))
+ VOP_REVOKE(vp, REVOKEALL);
out:
vrele(vp);
return (error);
@@ -2027,7 +2627,10 @@
/*
* Convert a user file descriptor to a kernel file entry.
+ *
+ * On return *fpp is FREF:ed.
*/
+int
getvnode(fdp, fd, fpp)
struct filedesc *fdp;
struct file **fpp;
@@ -2035,11 +2638,579 @@
{
struct file *fp;
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL)
+ if ((fp = fd_getfile(fdp, fd)) == NULL)
return (EBADF);
if (fp->f_type != DTYPE_VNODE)
return (EINVAL);
+ FREF(fp);
*fpp = fp;
+
return (0);
}
+
+/*
+ * Positional read system call.
+ */
+int
+sys_pread(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_pread_args /* {
+ syscallarg(int) fd;
+ syscallarg(void *) buf;
+ syscallarg(size_t) nbyte;
+ syscallarg(int) pad;
+ syscallarg(off_t) offset;
+ } */ *uap = v;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp;
+ off_t offset;
+ int fd = SCARG(uap, fd);
+
+ if ((fp = fd_getfile(fdp, fd)) == NULL)
+ return (EBADF);
+ if ((fp->f_flag & FREAD) == 0)
+ return (EBADF);
+
+ vp = (struct vnode *)fp->f_data;
+ if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
+ return (ESPIPE);
+ }
+
+ offset = SCARG(uap, offset);
+
+ FREF(fp);
+
+ /* dofileread() will FRELE the descriptor for us */
+ return (dofileread(p, fd, fp, SCARG(uap, buf), SCARG(uap, nbyte),
+ &offset, retval));
+}
+
+/*
+ * Positional scatter read system call.
+ */
+int
+sys_preadv(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_preadv_args /* {
+ syscallarg(int) fd;
+ syscallarg(const struct iovec *) iovp;
+ syscallarg(int) iovcnt;
+ syscallarg(int) pad;
+ syscallarg(off_t) offset;
+ } */ *uap = v;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp;
+ off_t offset;
+ int fd = SCARG(uap, fd);
+
+ if ((fp = fd_getfile(fdp, fd)) == NULL)
+ return (EBADF);
+ if ((fp->f_flag & FREAD) == 0)
+ return (EBADF);
+
+ vp = (struct vnode *)fp->f_data;
+ if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
+ return (ESPIPE);
+ }
+
+ FREF(fp);
+
+ offset = SCARG(uap, offset);
+
+ /* dofilereadv() will FRELE the descriptor for us */
+ return (dofilereadv(p, fd, fp, SCARG(uap, iovp), SCARG(uap, iovcnt),
+ &offset, retval));
+}
+
+/*
+ * Positional write system call.
+ */
+int
+sys_pwrite(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_pwrite_args /* {
+ syscallarg(int) fd;
+ syscallarg(const void *) buf;
+ syscallarg(size_t) nbyte;
+ syscallarg(int) pad;
+ syscallarg(off_t) offset;
+ } */ *uap = v;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp;
+ off_t offset;
+ int fd = SCARG(uap, fd);
+
+ if ((fp = fd_getfile(fdp, fd)) == NULL)
+ return (EBADF);
+ if ((fp->f_flag & FWRITE) == 0)
+ return (EBADF);
+
+ vp = (struct vnode *)fp->f_data;
+ if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
+ return (ESPIPE);
+ }
+
+ FREF(fp);
+
+ offset = SCARG(uap, offset);
+
+ /* dofilewrite() will FRELE the descriptor for us */
+ return (dofilewrite(p, fd, fp, SCARG(uap, buf), SCARG(uap, nbyte),
+ &offset, retval));
+}
+
+
+/*
+ * Positional gather write system call.
+ */
+int
+sys_pwritev(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_pwritev_args /* {
+ syscallarg(int) fd;
+ syscallarg(const struct iovec *) iovp;
+ syscallarg(int) iovcnt;
+ syscallarg(int) pad;
+ syscallarg(off_t) offset;
+ } */ *uap = v;
+ struct filedesc *fdp = p->p_fd;
+ struct file *fp;
+ struct vnode *vp;
+ off_t offset;
+ int fd = SCARG(uap, fd);
+
+ if ((fp = fd_getfile(fdp, fd)) == NULL)
+ return (EBADF);
+ if ((fp->f_flag & FWRITE) == 0)
+ return (EBADF);
+
+ vp = (struct vnode *)fp->f_data;
+ if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
+ return (ESPIPE);
+ }
+
+ FREF(fp);
+
+ offset = SCARG(uap, offset);
+
+ /* dofilewritev() will FRELE the descriptor for us */
+ return (dofilewritev(p, fd, fp, SCARG(uap, iovp), SCARG(uap, iovcnt),
+ &offset, retval));
+}
+
+#ifdef UFS_EXTATTR
+/*
+ * Syscall to push extended attribute configuration information into the
+ * VFS. Accepts a path, which it converts to a mountpoint, as well as
+ * a command (int cmd), and attribute name and misc data. For now, the
+ * attribute name is left in userspace for consumption by the VFS_op.
+ * It will probably be changed to be copied into sysspace by the
+ * syscall in the future, once issues with various consumers of the
+ * attribute code have raised their hands.
+ *
+ * Currently this is used only by UFS Extended Attributes.
+ */
+int
+sys_extattrctl(struct proc *p, void *v, register_t *reval)
+{
+ struct sys_extattrctl_args /* {
+ syscallarg(const char *) path;
+ syscallarg(int) cmd;
+ syscallarg(const char *) filename;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ } */ *uap = v;
+ struct vnode *filename_vp;
+ struct nameidata nd;
+ struct mount *mp;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ /*
+ * SCARG(uap, attrname) not always defined. We check again later
+ * when we invoke the VFS call so as to pass in NULL there if needed.
+ */
+ if (SCARG(uap, attrname) != NULL) {
+ error = copyinstr(SCARG(uap, attrname), attrname,
+ EXTATTR_MAXNAMELEN, NULL);
+ if (error)
+ return (error);
+ }
+
+ /*
+ * SCARG(uap, filename) not always defined. If it is, grab
+ * a vnode lock, which VFS_EXTATTRCTL() will later release.
+ */
+ filename_vp = NULL;
+ if (SCARG(uap, filename) != NULL) {
+ NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
+ SCARG(uap, filename), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+ filename_vp = nd.ni_vp;
+ }
+
+ /* SCARG(uap, path) always defined. */
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0) {
+ if (filename_vp != NULL)
+ vput(filename_vp);
+ return (error);
+ }
+
+ mp = nd.ni_vp->v_mount;
+ if (error) {
+ if (filename_vp != NULL)
+ vput(filename_vp);
+ return (error);
+ }
+
+ if (SCARG(uap, attrname) != NULL) {
+ error = VFS_EXTATTRCTL(mp, SCARG(uap, cmd), filename_vp,
+ SCARG(uap, attrnamespace), attrname, p);
+ } else {
+ error = VFS_EXTATTRCTL(mp, SCARG(uap, cmd), filename_vp,
+ SCARG(uap, attrnamespace), NULL, p);
+ }
+
+ /*
+ * VFS_EXTATTRCTL will have unlocked, but not de-ref'd,
+ * filename_vp, so vrele it if it is defined.
+ */
+ if (filename_vp != NULL)
+ vrele(filename_vp);
+
+ return (error);
+}
+
+/*-
+ * Set a named extended attribute on a file or directory
+ *
+ * Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
+ * kernelspace string pointer "attrname", userspace buffer
+ * pointer "data", buffer length "nbytes", thread "td".
+ * Returns: 0 on success, an error number otherwise
+ * Locks: none
+ * References: vp must be a valid reference for the duration of the call
+ */
+static int
+extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
+ void *data, size_t nbytes, struct proc *p, register_t *retval)
+{
+ struct uio auio;
+ struct iovec aiov;
+ ssize_t cnt;
+ int error;
+
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+
+ aiov.iov_base = data;
+ aiov.iov_len = nbytes;
+ auio.uio_iov = &aiov;
+ auio.uio_iovcnt = 1;
+ auio.uio_offset = 0;
+ if (nbytes > INT_MAX) {
+ error = EINVAL;
+ goto done;
+ }
+ auio.uio_resid = nbytes;
+ auio.uio_rw = UIO_WRITE;
+ auio.uio_segflg = UIO_USERSPACE;
+ auio.uio_procp = p;
+ cnt = nbytes;
+
+ error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio,
+ p->p_ucred, p);
+ cnt -= auio.uio_resid;
+ retval[0] = cnt;
+
+done:
+ VOP_UNLOCK(vp, 0, p);
+ return (error);
+}
+
+int
+sys_extattr_set_file(struct proc *p, void *v, register_t *retval)
+{
+ struct sys_extattr_set_file_args /* {
+ syscallarg(const char *) path;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ syscallarg(void *) data;
+ syscallarg(size_t) nbytes;
+ } */ *uap = v;
+ struct nameidata nd;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return (error);
+
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+
+ error = extattr_set_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
+ SCARG(uap, data), SCARG(uap, nbytes), p, retval);
+
+ vrele(nd.ni_vp);
+ return (error);
+}
+
+int
+sys_extattr_set_fd(struct proc *p, void *v, register_t *retval)
+{
+ struct sys_extattr_set_fd_args /* {
+ syscallarg(int) fd;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ syscallarg(struct iovec *) iovp;
+ syscallarg(int) iovcnt;
+ } */ *uap = v;
+ struct file *fp;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return (error);
+
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+ return (error);
+
+ error = extattr_set_vp((struct vnode *)fp->f_data,
+ SCARG(uap, attrnamespace), attrname, SCARG(uap, data),
+ SCARG(uap, nbytes), p, retval);
+ FRELE(fp);
+
+ return (error);
+}
+
+/*-
+ * Get a named extended attribute on a file or directory
+ *
+ * Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
+ * kernelspace string pointer "attrname", userspace buffer
+ * pointer "data", buffer length "nbytes", thread "td".
+ * Returns: 0 on success, an error number otherwise
+ * Locks: none
+ * References: vp must be a valid reference for the duration of the call
+ */
+static int
+extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
+ void *data, size_t nbytes, struct proc *p, register_t *retval)
+{
+ struct uio auio;
+ struct iovec aiov;
+ ssize_t cnt;
+ size_t size;
+ int error;
+
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_READ);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+
+ /*
+ * Slightly unusual semantics: if the user provides a NULL data
+ * pointer, they don't want to receive the data, just the
+ * maximum read length.
+ */
+ if (data != NULL) {
+ aiov.iov_base = data;
+ aiov.iov_len = nbytes;
+ auio.uio_iov = &aiov;
+ auio.uio_offset = 0;
+ if (nbytes > INT_MAX) {
+ error = EINVAL;
+ goto done;
+ }
+ auio.uio_resid = nbytes;
+ auio.uio_rw = UIO_READ;
+ auio.uio_segflg = UIO_USERSPACE;
+ auio.uio_procp = p;
+ cnt = nbytes;
+ error = VOP_GETEXTATTR(vp, attrnamespace, attrname, &auio,
+ NULL, p->p_ucred, p);
+ cnt -= auio.uio_resid;
+ retval[0] = cnt;
+ } else {
+ error = VOP_GETEXTATTR(vp, attrnamespace, attrname, NULL,
+ &size, p->p_ucred, p);
+ retval[0] = size;
+ }
+done:
+ VOP_UNLOCK(vp, 0, p);
+ return (error);
+}
+
+int
+sys_extattr_get_file(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_extattr_get_file_args /* {
+ syscallarg(const char *) path;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ syscallarg(void *) data;
+ syscallarg(size_t) nbytes;
+ } */ *uap = v;
+ struct nameidata nd;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return (error);
+
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return (error);
+
+ error = extattr_get_vp(nd.ni_vp, SCARG(uap, attrnamespace), attrname,
+ SCARG(uap, data), SCARG(uap, nbytes), p, retval);
+
+ vrele(nd.ni_vp);
+ return (error);
+}
+
+int
+sys_extattr_get_fd(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_extattr_get_fd_args /* {
+ syscallarg(int) fd;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ syscallarg(void *) data;
+ syscallarg(size_t) nbytes;
+ } */ *uap = v;
+ struct file *fp;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return (error);
+
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+ return (error);
+
+ error = extattr_get_vp((struct vnode *)fp->f_data,
+ SCARG(uap, attrnamespace), attrname, SCARG(uap, data),
+ SCARG(uap, nbytes), p, retval);
+ FRELE(fp);
+
+ return (error);
+}
+
+/*
+ * extattr_delete_vp(): Delete a named extended attribute on a file or
+ * directory
+ *
+ * Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
+ * kernelspace string pointer "attrname", proc "p"
+ * Returns: 0 on success, an error number otherwise
+ * Locks: none
+ * References: vp must be a valid reference for the duration of the call
+ */
+static int
+extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
+ struct proc *p)
+{
+ int error;
+
+ VOP_LEASE(vp, p, p->p_ucred, LEASE_WRITE);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+
+ error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
+ p->p_ucred, p);
+
+ VOP_UNLOCK(vp, 0, p);
+ return (error);
+}
+
+int
+sys_extattr_delete_file(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_extattr_delete_file_args /* {
+ syscallarg(int) fd;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ } */ *uap = v;
+ struct nameidata nd;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return(error);
+
+ NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG(uap, path), p);
+ if ((error = namei(&nd)) != 0)
+ return(error);
+
+ error = extattr_delete_vp(nd.ni_vp, SCARG(uap, attrnamespace),
+ attrname, p);
+
+ vrele(nd.ni_vp);
+ return(error);
+}
+
+int
+sys_extattr_delete_fd(p, v, retval)
+ struct proc *p;
+ void *v;
+ register_t *retval;
+{
+ struct sys_extattr_delete_fd_args /* {
+ syscallarg(int) fd;
+ syscallarg(int) attrnamespace;
+ syscallarg(const char *) attrname;
+ } */ *uap = v;
+ struct file *fp;
+ char attrname[EXTATTR_MAXNAMELEN];
+ int error;
+
+ error = copyinstr(SCARG(uap, attrname), attrname, EXTATTR_MAXNAMELEN,
+ NULL);
+ if (error)
+ return (error);
+
+ if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+ return (error);
+
+ error = extattr_delete_vp((struct vnode *)fp->f_data,
+ SCARG(uap, attrnamespace), attrname, p);
+ FRELE(fp);
+
+ return (error);
+}
+#endif