testsuite: add mkdir_p implementation

3 files changed, 97 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 223e319..5751dbd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -153,6 +153,7 @@ testsuite_path_la_LDFLAGS = $(TESTSUITE_OVERRIDE_LIBS_LDFLAGS)
 testsuite_delete_module_la_LDFLAGS = $(TESTSUITE_OVERRIDE_LIBS_LDFLAGS)
 testsuite_init_module_la_LDFLAGS = $(TESTSUITE_OVERRIDE_LIBS_LDFLAGS)
 testsuite_init_module_la_SOURCES = testsuite/init_module.c \
+				   testsuite/mkdir.c \
 				   testsuite/stripped-module.h
 testsuite_init_module_la_LIBADD = libkmod/libkmod-private.la
 
diff --git a/testsuite/mkdir.c b/testsuite/mkdir.c
new file mode 100644
index 0000000..c334902
--- /dev/null
+++ b/testsuite/mkdir.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2012  Lucas De Marchi <lucas.de.marchi@gmail.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "mkdir.h"
+#include "testsuite.h"
+
+TS_EXPORT int mkdir_p(const char *path, mode_t mode)
+{
+	char *start = strdupa(path);
+	int len = strlen(path);
+	char *end = start + len;
+	struct stat st;
+
+	/*
+	 * scan backwards, replacing '/' with '\0' while the component doesn't
+	 * exist
+	 */
+	for (;;) {
+		if (stat(start, &st) >= 0) {
+			if (S_ISDIR(st.st_mode))
+				break;
+			return -ENOTDIR;
+		}
+
+		/* Find the next component, backwards, discarding extra '/'*/
+		for (; end != start && *end != '/'; end--)
+			;
+
+		for (; end != start - 1 && *end == '/'; end--)
+			;
+
+		end++;
+		if (end == start)
+			break;
+
+		*end = '\0';
+	}
+
+	if (end == start + len)
+		return 0;
+
+	for (; end < start + len;) {
+		*end = '/';
+		end += strlen(end);
+
+		if (mkdir(start, mode) < 0)
+			return -errno;
+	}
+
+	return 0;
+}
diff --git a/testsuite/mkdir.h b/testsuite/mkdir.h
new file mode 100644
index 0000000..6d48ca9
--- /dev/null
+++ b/testsuite/mkdir.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2012  Lucas De Marchi <lucas.de.marchi@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LIBKMOD_TESTSUITE_MKDIR_
+#define _LIBKMOD_TESTSUITE_MKDIR_
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+int mkdir_p(const char *path, mode_t mode);
+
+#endif