make sure that the pseudo_set isn't empty.

[unix-history] / sys / kern / vfs_syscalls.c

diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
index f91ccf0..441b51c 100644 (file)
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *     from: @(#)vfs_syscalls.c        7.74 (Berkeley) 6/21/91
  * SUCH DAMAGE.
  *
  *     from: @(#)vfs_syscalls.c        7.74 (Berkeley) 6/21/91

- *     $Id: vfs_syscalls.c,v 1.4 1993/10/16 15:25:26 rgrimes Exp $
+ *     $Id: vfs_syscalls.c,v 1.16 1994/05/26 04:46:47 ache Exp $

  */
 
 #include "param.h"
  */
 
 #include "param.h"


@@ -47,6 +47,9 @@
 #include "uio.h"
 #include "malloc.h"
 
 #include "uio.h"
 #include "malloc.h"
 

+static int getvnode(struct filedesc *, int, struct file **);
+static int chdirec(struct nameidata *, struct proc *);
+

 /*
  * Virtual File System System Calls
  */
 /*
  * Virtual File System System Calls
  */


@@ -63,6 +66,7 @@ struct mount_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 mount(p, uap, retval)
        struct proc *p;
        register struct mount_args *uap;
 mount(p, uap, retval)
        struct proc *p;
        register struct mount_args *uap;


@@ -71,7 +75,7 @@ mount(p, uap, retval)
        register struct nameidata *ndp;
        register struct vnode *vp;
        register struct mount *mp;
        register struct nameidata *ndp;
        register struct vnode *vp;
        register struct mount *mp;

-       int error, flag;
+       int error, flag = 0;

        struct nameidata nd;
 
        /*
        struct nameidata nd;
 
        /*


@@ -150,30 +154,10 @@ update:
        /*
         * Set the mount level flags.
         */
        /*
         * Set the mount level flags.
         */

-       if (uap->flags & MNT_RDONLY)
-               mp->mnt_flag |= MNT_RDONLY;
-       else
-               mp->mnt_flag &= ~MNT_RDONLY;
-       if (uap->flags & MNT_NOSUID)
-               mp->mnt_flag |= MNT_NOSUID;
-       else
-               mp->mnt_flag &= ~MNT_NOSUID;
-       if (uap->flags & MNT_NOEXEC)
-               mp->mnt_flag |= MNT_NOEXEC;
-       else
-               mp->mnt_flag &= ~MNT_NOEXEC;
-       if (uap->flags & MNT_NODEV)
-               mp->mnt_flag |= MNT_NODEV;
-       else
-               mp->mnt_flag &= ~MNT_NODEV;
-       if (uap->flags & MNT_NOCORE)
-               mp->mnt_flag |= MNT_NOCORE;
-       else
-               mp->mnt_flag &= ~MNT_NOCORE;
-       if (uap->flags & MNT_SYNCHRONOUS)
-               mp->mnt_flag |= MNT_SYNCHRONOUS;
-       else
-               mp->mnt_flag &= ~MNT_SYNCHRONOUS;
+       mp->mnt_flag &=
+               ~(MNT_RDONLY|MNT_NOSUID|MNT_NOEXEC|MNT_NODEV|MNT_SYNCHRONOUS);
+       mp->mnt_flag |= uap->flags &
+               (MNT_RDONLY|MNT_NOSUID|MNT_NOEXEC|MNT_NODEV|MNT_SYNCHRONOUS);

        /*
         * Mount the filesystem.
         */
        /*
         * Mount the filesystem.
         */


@@ -218,6 +202,7 @@ struct umount_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 unmount(p, uap, retval)
        struct proc *p;
        register struct umount_args *uap;
 unmount(p, uap, retval)
        struct proc *p;
        register struct umount_args *uap;


@@ -257,6 +242,7 @@ unmount(p, uap, retval)
 /*
  * Do an unmount.
  */
 /*
  * Do an unmount.
  */

+int

 dounmount(mp, flags, p)
        register struct mount *mp;
        int flags;
 dounmount(mp, flags, p)
        register struct mount *mp;
        int flags;


@@ -293,6 +279,7 @@ dounmount(mp, flags, p)
  * Sync each mounted filesystem.
  */
 /* ARGSUSED */
  * Sync each mounted filesystem.
  */
 /* ARGSUSED */

+int

 sync(p, uap, retval)
        struct proc *p;
        void *uap;
 sync(p, uap, retval)
        struct proc *p;
        void *uap;


@@ -332,6 +319,7 @@ struct quotactl_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 quotactl(p, uap, retval)
        struct proc *p;
        register struct quotactl_args *uap;
 quotactl(p, uap, retval)
        struct proc *p;
        register struct quotactl_args *uap;


@@ -363,6 +351,7 @@ struct statfs_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 statfs(p, uap, retval)
        struct proc *p;
        register struct statfs_args *uap;
 statfs(p, uap, retval)
        struct proc *p;
        register struct statfs_args *uap;


@@ -399,6 +388,7 @@ struct fstatfs_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fstatfs(p, uap, retval)
        struct proc *p;
        register struct fstatfs_args *uap;
 fstatfs(p, uap, retval)
        struct proc *p;
        register struct fstatfs_args *uap;


@@ -429,6 +419,7 @@ struct getfsstat_args {
        int flags;
 };
 
        int flags;
 };
 

+int

 getfsstat(p, uap, retval)
        struct proc *p;
        register struct getfsstat_args *uap;
 getfsstat(p, uap, retval)
        struct proc *p;
        register struct getfsstat_args *uap;


@@ -481,6 +472,7 @@ struct fchdir_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fchdir(p, uap, retval)
        struct proc *p;
        struct fchdir_args *uap;
 fchdir(p, uap, retval)
        struct proc *p;
        struct fchdir_args *uap;


@@ -517,6 +509,7 @@ struct chdir_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 chdir(p, uap, retval)
        struct proc *p;
        struct chdir_args *uap;
 chdir(p, uap, retval)
        struct proc *p;
        struct chdir_args *uap;


@@ -547,6 +540,7 @@ struct chroot_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 chroot(p, uap, retval)
        struct proc *p;
        struct chroot_args *uap;
 chroot(p, uap, retval)
        struct proc *p;
        struct chroot_args *uap;


@@ -574,6 +568,7 @@ chroot(p, uap, retval)
 /*
  * Common routine for chroot and chdir.
  */
 /*
  * Common routine for chroot and chdir.
  */

+static int

 chdirec(ndp, p)
        struct nameidata *ndp;
        struct proc *p;
 chdirec(ndp, p)
        struct nameidata *ndp;
        struct proc *p;


@@ -606,6 +601,7 @@ struct open_args {
        int     crtmode;
 };
 
        int     crtmode;
 };
 

+int

 open(p, uap, retval)
        struct proc *p;
        register struct open_args *uap;
 open(p, uap, retval)
        struct proc *p;
        register struct open_args *uap;


@@ -645,6 +641,7 @@ open(p, uap, retval)
                return (error);
        }
        vp = ndp->ni_vp;
                return (error);
        }
        vp = ndp->ni_vp;

+       VOP_UNLOCK(vp);

        fp->f_flag = fmode & FMASK;
        if (fmode & (O_EXLOCK | O_SHLOCK)) {
                lf.l_whence = SEEK_SET;
        fp->f_flag = fmode & FMASK;
        if (fmode & (O_EXLOCK | O_SHLOCK)) {
                lf.l_whence = SEEK_SET;


@@ -658,7 +655,6 @@ open(p, uap, retval)
                if ((fmode & FNONBLOCK) == 0)
                        type |= F_WAIT;
                if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) {
                if ((fmode & FNONBLOCK) == 0)
                        type |= F_WAIT;
                if (error = VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, type)) {

-                       VOP_UNLOCK(vp);

                        (void) vn_close(vp, fp->f_flag, fp->f_cred, p);
                        ffree(fp);
                        fdp->fd_ofiles[indx] = NULL;
                        (void) vn_close(vp, fp->f_flag, fp->f_cred, p);
                        ffree(fp);
                        fdp->fd_ofiles[indx] = NULL;


@@ -666,7 +662,6 @@ open(p, uap, retval)
                }
                fp->f_flag |= FHASLOCK;
        }
                }
                fp->f_flag |= FHASLOCK;
        }

-       VOP_UNLOCK(vp);

        fp->f_type = DTYPE_VNODE;
        fp->f_ops = &vnops;
        fp->f_data = (caddr_t)vp;
        fp->f_type = DTYPE_VNODE;
        fp->f_ops = &vnops;
        fp->f_data = (caddr_t)vp;


@@ -684,6 +679,7 @@ struct ocreat_args {
        int     fmode;
 };
 
        int     fmode;
 };
 

+int

 ocreat(p, uap, retval)
        struct proc *p;
        register struct ocreat_args *uap;
 ocreat(p, uap, retval)
        struct proc *p;
        register struct ocreat_args *uap;


@@ -713,6 +709,7 @@ struct mknod_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 mknod(p, uap, retval)
        struct proc *p;
        register struct mknod_args *uap;
 mknod(p, uap, retval)
        struct proc *p;
        register struct mknod_args *uap;


@@ -780,6 +777,7 @@ struct mkfifo_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 mkfifo(p, uap, retval)
        struct proc *p;
        register struct mkfifo_args *uap;
 mkfifo(p, uap, retval)
        struct proc *p;
        register struct mkfifo_args *uap;


@@ -825,6 +823,7 @@ struct link_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 link(p, uap, retval)
        struct proc *p;
        register struct link_args *uap;
 link(p, uap, retval)
        struct proc *p;
        register struct link_args *uap;


@@ -842,9 +841,10 @@ link(p, uap, retval)
        if (error = namei(ndp, p))
                return (error);
        vp = ndp->ni_vp;
        if (error = namei(ndp, p))
                return (error);
        vp = ndp->ni_vp;

-       if (vp->v_type == VDIR &&
-           (error = suser(p->p_ucred, &p->p_acflag)))
+       if (vp->v_type == VDIR) {
+               error = EPERM;

                goto out1;
                goto out1;

+       }

        ndp->ni_nameiop = CREATE | LOCKPARENT;
        ndp->ni_dirp = (caddr_t)uap->linkname;
        if (error = namei(ndp, p))
        ndp->ni_nameiop = CREATE | LOCKPARENT;
        ndp->ni_dirp = (caddr_t)uap->linkname;
        if (error = namei(ndp, p))


@@ -884,6 +884,7 @@ struct symlink_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 symlink(p, uap, retval)
        struct proc *p;
        register struct symlink_args *uap;
 symlink(p, uap, retval)
        struct proc *p;
        register struct symlink_args *uap;


@@ -931,6 +932,7 @@ struct unlink_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 unlink(p, uap, retval)
        struct proc *p;
        struct unlink_args *uap;
 unlink(p, uap, retval)
        struct proc *p;
        struct unlink_args *uap;


@@ -983,6 +985,7 @@ struct lseek_args {
        int     sbase;
 };
 
        int     sbase;
 };
 

+int

 lseek(p, uap, retval)
        struct proc *p;
        register struct lseek_args *uap;
 lseek(p, uap, retval)
        struct proc *p;
        register struct lseek_args *uap;


@@ -1033,6 +1036,7 @@ struct saccess_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 saccess(p, uap, retval)
        struct proc *p;
        register struct saccess_args *uap;
 saccess(p, uap, retval)
        struct proc *p;
        register struct saccess_args *uap;


@@ -1087,6 +1091,7 @@ struct stat_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 stat(p, uap, retval)
        struct proc *p;
        register struct stat_args *uap;
 stat(p, uap, retval)
        struct proc *p;
        register struct stat_args *uap;


@@ -1122,6 +1127,7 @@ struct lstat_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 lstat(p, uap, retval)
        struct proc *p;
        register struct lstat_args *uap;
 lstat(p, uap, retval)
        struct proc *p;
        register struct lstat_args *uap;


@@ -1157,6 +1163,7 @@ struct readlink_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 readlink(p, uap, retval)
        struct proc *p;
        register struct readlink_args *uap;
 readlink(p, uap, retval)
        struct proc *p;
        register struct readlink_args *uap;


@@ -1206,6 +1213,7 @@ struct chflags_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 chflags(p, uap, retval)
        struct proc *p;
        register struct chflags_args *uap;
 chflags(p, uap, retval)
        struct proc *p;
        register struct chflags_args *uap;


@@ -1246,6 +1254,7 @@ struct fdchflags_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fchflags(p, uap, retval)
        struct proc *p;
        register struct fdchflags_args *uap;
 fchflags(p, uap, retval)
        struct proc *p;
        register struct fdchflags_args *uap;


@@ -1282,6 +1291,7 @@ struct chmod_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 chmod(p, uap, retval)
        struct proc *p;
        register struct chmod_args *uap;
 chmod(p, uap, retval)
        struct proc *p;
        register struct chmod_args *uap;


@@ -1322,6 +1332,7 @@ struct fchmod_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fchmod(p, uap, retval)
        struct proc *p;
        register struct fchmod_args *uap;
 fchmod(p, uap, retval)
        struct proc *p;
        register struct fchmod_args *uap;


@@ -1359,6 +1370,7 @@ struct chown_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 chown(p, uap, retval)
        struct proc *p;
        register struct chown_args *uap;
 chown(p, uap, retval)
        struct proc *p;
        register struct chown_args *uap;


@@ -1401,6 +1413,7 @@ struct fchown_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fchown(p, uap, retval)
        struct proc *p;
        register struct fchown_args *uap;
 fchown(p, uap, retval)
        struct proc *p;
        register struct fchown_args *uap;


@@ -1438,6 +1451,7 @@ struct utimes_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 utimes(p, uap, retval)
        struct proc *p;
        register struct utimes_args *uap;
 utimes(p, uap, retval)
        struct proc *p;
        register struct utimes_args *uap;


@@ -1450,7 +1464,12 @@ utimes(p, uap, retval)
        int error;
        struct nameidata nd;
 
        int error;
        struct nameidata nd;
 

-       if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv)))
+       VATTR_NULL(&vattr);
+       if ((caddr_t)uap->tptr == NULL) {
+               microtime(&tv[0]);
+               tv[1] = tv[0];
+               vattr.va_vaflags |= VA_UTIMES_NULL;
+       } else if (error = copyin((caddr_t)uap->tptr, (caddr_t)tv, sizeof (tv)))

                return (error);
        ndp = &nd;
        ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF;
                return (error);
        ndp = &nd;
        ndp->ni_nameiop = LOOKUP | FOLLOW | LOCKLEAF;


@@ -1463,7 +1482,6 @@ utimes(p, uap, retval)
                error = EROFS;
                goto out;
        }
                error = EROFS;
                goto out;
        }

-       VATTR_NULL(&vattr);

        vattr.va_atime = tv[0];
        vattr.va_mtime = tv[1];
        error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);
        vattr.va_atime = tv[0];
        vattr.va_mtime = tv[1];
        error = VOP_SETATTR(vp, &vattr, p->p_ucred, p);


@@ -1482,6 +1500,7 @@ struct truncate_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 truncate(p, uap, retval)
        struct proc *p;
        register struct truncate_args *uap;
 truncate(p, uap, retval)
        struct proc *p;
        register struct truncate_args *uap;


@@ -1525,6 +1544,7 @@ struct ftruncate_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 ftruncate(p, uap, retval)
        struct proc *p;
        register struct ftruncate_args *uap;
 ftruncate(p, uap, retval)
        struct proc *p;
        register struct ftruncate_args *uap;


@@ -1564,6 +1584,7 @@ struct fsync_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 fsync(p, uap, retval)
        struct proc *p;
        struct fsync_args *uap;
 fsync(p, uap, retval)
        struct proc *p;
        struct fsync_args *uap;


@@ -1595,6 +1616,7 @@ struct rename_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 rename(p, uap, retval)
        struct proc *p;
        register struct rename_args *uap;
 rename(p, uap, retval)
        struct proc *p;
        register struct rename_args *uap;


@@ -1685,6 +1707,7 @@ struct mkdir_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 mkdir(p, uap, retval)
        struct proc *p;
        register struct mkdir_args *uap;
 mkdir(p, uap, retval)
        struct proc *p;
        register struct mkdir_args *uap;


@@ -1730,6 +1753,7 @@ struct rmdir_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 rmdir(p, uap, retval)
        struct proc *p;
        struct rmdir_args *uap;
 rmdir(p, uap, retval)
        struct proc *p;
        struct rmdir_args *uap;


@@ -1788,6 +1812,7 @@ struct getdirentries_args {
        long    *basep;
 };
 
        long    *basep;
 };
 

+int

 getdirentries(p, uap, retval)
        struct proc *p;
        register struct getdirentries_args *uap;
 getdirentries(p, uap, retval)
        struct proc *p;
        register struct getdirentries_args *uap;


@@ -1858,6 +1883,7 @@ struct revoke_args {
 };
 
 /* ARGSUSED */
 };
 
 /* ARGSUSED */

+int

 revoke(p, uap, retval)
        struct proc *p;
        register struct revoke_args *uap;
 revoke(p, uap, retval)
        struct proc *p;
        register struct revoke_args *uap;


@@ -1895,10 +1921,11 @@ out:
 /*
  * Convert a user file descriptor to a kernel file entry.
  */
 /*
  * Convert a user file descriptor to a kernel file entry.
  */

+static int

 getvnode(fdp, fdes, fpp)
        struct filedesc *fdp;
 getvnode(fdp, fdes, fpp)
        struct filedesc *fdp;

-       struct file **fpp;

        int fdes;
        int fdes;

+       struct file **fpp;

 {
        struct file *fp;
 
 {
        struct file *fp;