[LTP] [PATCH v2] growfiles:fix test failure due to missing directory

[lepillai@linux.ibm.com]

From: lekshmi-cpillai <lepillai@linux.ibm.com>

Signed-off-by: lekshmi-cpillai <lepillai@linux.ibm.com>
---
 testcases/kernel/fs/doio/growfiles.c | 35 +++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/testcases/kernel/fs/doio/growfiles.c b/testcases/kernel/fs/doio/growfiles.c
index 21960f82a..5a76ef4c5 100644
--- a/testcases/kernel/fs/doio/growfiles.c
+++ b/testcases/kernel/fs/doio/growfiles.c
@@ -119,6 +119,38 @@ int lkfile(int fd, int operation, int lklevel);
 int pre_alloc(int fd, long size);
 #endif /* !linux */
 
+/* Helper function to create directories recursively */
+static int mkdir_recursive(const char *path, mode_t mode)
+{
+	char tmp[PATH_MAX];
+	char *p = NULL;
+	size_t len;
+	struct stat st;
+
+	snprintf(tmp, sizeof(tmp), "%s", path);
+	len = strlen(tmp);
+	if (tmp[len - 1] == '/')
+		tmp[len - 1] = 0;
+
+	for (p = tmp + 1; *p; p++) {
+		if (*p == '/') {
+			*p = 0;
+			if (stat(tmp, &st) == -1) {
+				if (mkdir(tmp, mode) == -1 && errno != EEXIST) {
+					return -1;
+				}
+			}
+			*p = '/';
+		}
+	}
+	if (stat(tmp, &st) == -1) {
+		if (mkdir(tmp, mode) == -1 && errno != EEXIST) {
+			return -1;
+		}
+	}
+	return 0;
+}
+
 extern int datapidgen(int, char *, int, int);
 extern int datapidchk(int, char *, int, int, char **);
 
@@ -482,7 +514,7 @@ int main(int argc, char **argv)
 			unsetenv("TMPDIR");	/* force the use of auto_dir */
 #endif
 			if (stat(auto_dir, &statbuf) == -1) {
-				if (mkdir(auto_dir, 0777) == -1) {
+				if (mkdir_recursive(auto_dir, 0777) == -1) {
 					if (errno != EEXIST) {
 						fprintf(stderr,
 							"%s%s: Unable to make dir %s\n",
@@ -3058,3 +3090,4 @@ int pre_alloc(int fd, long size)
 	return 0;
 }
 #endif
+
-- 
2.39.1


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