Fix libspl move to the wrong place

1 files changed, 212 insertions, 0 deletions

diff --git a/lib/libspl/mkdirp.c b/lib/libspl/mkdirp.c
new file mode 100644
index 000000000..9c81f2a0b
--- /dev/null
+++ b/lib/libspl/mkdirp.c
@@ -0,0 +1,212 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (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 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Creates directory and it's parents if the parents do not
+ * exist yet.
+ *
+ * Returns -1 if fails for reasons other than non-existing
+ * parents.
+ * Does NOT simplify pathnames with . or .. in them.
+ */
+
+#include <sys/types.h>
+#include <libgen.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+
+static char *simplify(const char *str);
+
+int
+mkdirp(const char *d, mode_t mode)
+{
+	char  *endptr, *ptr, *slash, *str;
+
+	str = simplify(d);
+
+	/* If space couldn't be allocated for the simplified names, return. */
+
+	if (str == NULL)
+		return (-1);
+
+		/* Try to make the directory */
+
+	if (mkdir(str, mode) == 0) {
+		free(str);
+		return (0);
+	}
+	if (errno != ENOENT) {
+		free(str);
+		return (-1);
+	}
+	endptr = strrchr(str, '\0');
+	slash = strrchr(str, '/');
+
+		/* Search upward for the non-existing parent */
+
+	while (slash != NULL) {
+
+		ptr = slash;
+		*ptr = '\0';
+
+			/* If reached an existing parent, break */
+
+		if (access(str, F_OK) == 0)
+			break;
+
+			/* If non-existing parent */
+
+		else {
+			slash = strrchr(str, '/');
+
+				/* If under / or current directory, make it. */
+
+			if (slash == NULL || slash == str) {
+				if (mkdir(str, mode) != 0 && errno != EEXIST) {
+					free(str);
+					return (-1);
+				}
+				break;
+			}
+		}
+	}
+
+	/* Create directories starting from upmost non-existing parent */
+
+	while ((ptr = strchr(str, '\0')) != endptr) {
+		*ptr = '/';
+		if (mkdir(str, mode) != 0 && errno != EEXIST) {
+			/*
+			 *  If the mkdir fails because str already
+			 *  exists (EEXIST), then str has the form
+			 *  "existing-dir/..", and this is really
+			 *  ok. (Remember, this loop is creating the
+			 *  portion of the path that didn't exist)
+			 */
+			free(str);
+			return (-1);
+		}
+	}
+	free(str);
+	return (0);
+}
+
+/*
+ *	simplify - given a pathname, simplify that path by removing
+ *		   duplicate contiguous slashes.
+ *
+ *		   A simplified copy of the argument is returned to the
+ *		   caller, or NULL is returned on error.
+ *
+ *		   The caller should handle error reporting based upon the
+ *		   returned vlaue, and should free the returned value,
+ *		   when appropriate.
+ */
+
+static char *
+simplify(const char *str)
+{
+	int i;
+	size_t mbPathlen;	/* length of multi-byte path */
+	size_t wcPathlen;	/* length of wide-character path */
+	wchar_t *wptr;		/* scratch pointer */
+	wchar_t *wcPath;	/* wide-character version of the path */
+	char *mbPath;		/* The copy fo the path to be returned */
+
+	/*
+	 *  bail out if there is nothing there.
+	 */
+
+	if (!str)
+		return (NULL);
+
+	/*
+	 *  Get a copy of the argument.
+	 */
+
+	if ((mbPath = strdup(str)) == NULL) {
+		return (NULL);
+	}
+
+	/*
+	 *  convert the multi-byte version of the path to a
+	 *  wide-character rendering, for doing our figuring.
+	 */
+
+	mbPathlen = strlen(mbPath);
+
+	if ((wcPath = calloc(sizeof (wchar_t), mbPathlen+1)) == NULL) {
+		free(mbPath);
+		return (NULL);
+	}
+
+	if ((wcPathlen = mbstowcs(wcPath, mbPath, mbPathlen)) == (size_t)-1) {
+		free(mbPath);
+		free(wcPath);
+		return (NULL);
+	}
+
+	/*
+	 *  remove duplicate slashes first ("//../" -> "/")
+	 */
+
+	for (wptr = wcPath, i = 0; i < wcPathlen; i++) {
+		*wptr++ = wcPath[i];
+
+		if (wcPath[i] == '/') {
+			i++;
+
+			while (wcPath[i] == '/') {
+				i++;
+			}
+
+			i--;
+		}
+	}
+
+	*wptr = '\0';
+
+	/*
+	 *  now convert back to the multi-byte format.
+	 */
+
+	if (wcstombs(mbPath, wcPath, mbPathlen) == (size_t)-1) {
+		free(mbPath);
+		free(wcPath);
+		return (NULL);
+	}
+
+	free(wcPath);
+	return (mbPath);
+}