Rather than let users get fd's to symlink files, make O_NOFOLLOW cause
an error if it gets a link (like it does if it gets a socket). The implications of letting users try and do file operations on symlinks themselves were too worrying.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=35085
@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)vfs_vnops.c 8.2 (Berkeley) 1/21/94
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* $Id: vfs_vnops.c,v 1.50 1998/02/25 05:58:47 bde Exp $
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* $Id: vfs_vnops.c,v 1.51 1998/04/06 17:38:42 peter Exp $
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*/
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#include <sys/param.h>
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@ -83,7 +83,7 @@ vn_open(ndp, fmode, cmode)
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if (fmode & O_CREAT) {
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ndp->ni_cnd.cn_nameiop = CREATE;
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ndp->ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
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if ((fmode & O_EXCL) == 0)
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if ((fmode & O_EXCL) == 0 && (fmode & O_NOFOLLOW) == 0)
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ndp->ni_cnd.cn_flags |= FOLLOW;
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error = namei(ndp);
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if (error)
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@ -125,7 +125,7 @@ vn_open(ndp, fmode, cmode)
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return (error);
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vp = ndp->ni_vp;
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}
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if (vp->v_type == VSOCK) {
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if (vp->v_type == VSOCK || vp->v_type == VLNK) {
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error = EOPNOTSUPP;
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goto bad;
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}
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