Attachment 11872 Details for Bug 23191 – file.diff

[patch] file.diff

file.diff (text/plain), 1.30 KB, created by tmoestl on 2000-11-30 13:40:00 UTC

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Creator: tmoestl

Created: 2000-11-30 13:40:00 UTC

Size: 1.30 KB

patch

obsolete

>*** old/kern/vfs_lookup.c	Sat Nov 25 23:55:39 2000
>--- new/kern/vfs_lookup.c	Sun Nov 26 00:58:15 2000
>***************
>*** 403,408 ****
>--- 403,412 ----
>  			if ((dp->v_flag & VROOT) == 0 ||
>  			    (cnp->cn_flags & NOCROSSMOUNT))
>  				break;
>+ 			if (dp->v_mount == NULL) {	/* forced unmount */
>+ 				error = EBADF;
>+ 				goto bad;
>+ 			}
>  			tdp = dp;
>  			dp = dp->v_mount->mnt_vnodecovered;
>  			vput(tdp);
>***************
>*** 424,430 ****
>  		printf("not found\n");
>  #endif
>  		if ((error == ENOENT) &&
>! 		    (dp->v_flag & VROOT) &&
>  		    (dp->v_mount->mnt_flag & MNT_UNION)) {
>  			tdp = dp;
>  			dp = dp->v_mount->mnt_vnodecovered;
>--- 428,434 ----
>  		printf("not found\n");
>  #endif
>  		if ((error == ENOENT) &&
>! 		    (dp->v_flag & VROOT) && (dp->v_mount != NULL) &&
>  		    (dp->v_mount->mnt_flag & MNT_UNION)) {
>  			tdp = dp;
>  			dp = dp->v_mount->mnt_vnodecovered;
>***************
>*** 502,507 ****
>--- 506,517 ----
>  	    ((cnp->cn_flags & FOLLOW) || trailing_slash ||
>  	     *ndp->ni_next == '/')) {
>  		cnp->cn_flags |= ISSYMLINK;
>+ 		if (dp->v_mount == NULL) {
>+ 			/* We can't know whether the directory was mounted with
>+ 			 * NOSYMFOLLOW, so we can't follow safely. */
>+ 			error = EBADF;
>+ 			goto bad2;
>+ 		}
>  		if (dp->v_mount->mnt_flag & MNT_NOSYMFOLLOW) {
>  			error = EACCES;
>  			goto bad2;

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Attachments on bug 23191: 11872