OpenSolaris Launch

1 files changed, 111 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/unlink.c b/usr/src/uts/common/syscall/unlink.c
new file mode 100644
index 0000000000..d4b84c0272
--- /dev/null
+++ b/usr/src/uts/common/syscall/unlink.c
@@ -0,0 +1,111 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*
+ * Portions of this source code were derived from Berkeley 4.3 BSD
+ * under license from the Regents of the University of California.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/param.h>
+#include <sys/isa_defs.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/vnode.h>
+#include <sys/uio.h>
+#include <sys/debug.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+#include <c2/audit.h>
+
+/*
+ * Unlink (i.e. delete) a file.
+ */
+int
+unlink(char *fname)
+{
+	int	error;
+
+	if (error = vn_remove(fname, UIO_USERSPACE, RMFILE))
+		return (set_errno(error));
+	return (0);
+}
+
+/*
+ * Unlink a file from a directory
+ */
+int
+unlinkat(int fd, char *name, int flags)
+{
+	file_t *dirfp;
+	vnode_t *dirvp;
+	int error;
+	char startchar;
+
+	if (fd == AT_FDCWD && name == NULL)
+		return (set_errno(EFAULT));
+
+	if (name != NULL) {
+		if (copyin(name, &startchar, sizeof (char)))
+			return (set_errno(EFAULT));
+	} else
+		startchar = '\0';
+
+	if (fd == AT_FDCWD) {
+		dirvp = NULL;
+	} else {
+		if (startchar != '/') {
+			if ((dirfp = getf(fd)) == NULL) {
+				return (set_errno(EBADF));
+			}
+			dirvp = dirfp->f_vnode;
+			VN_HOLD(dirvp);
+			releasef(fd);
+		} else {
+			dirvp = NULL;
+		}
+	}
+
+#ifdef C2_AUDIT
+	if (audit_active)
+		audit_setfsat_path(1);
+#endif /* C2_AUDIT */
+
+	error = vn_removeat(dirvp, name,
+		UIO_USERSPACE, (flags == AT_REMOVEDIR) ? RMDIRECTORY : RMFILE);
+	if (dirvp != NULL)
+		VN_RELE(dirvp);
+
+	if (error != NULL)
+		return (set_errno(error));
+	return (0);
+}