[PATCH 13/40] crda: explicitly close file descriptor and munmap() on failures

[mcgrof@xxxxxxxxxxxxxxxx (Luis R. Rodriguez)]

From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxxxxxxxx>

Just do this explicitly.

Signed-off-by: Luis R. Rodriguez <mcgrof at do-not-panic.com>
---
 reglib.c |   16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/reglib.c b/reglib.c
index bb6f23f..cbe9676 100644
--- a/reglib.c
+++ b/reglib.c
@@ -307,33 +307,37 @@ reglib_get_rd_alpha2(const char *alpha2, const char *file)
 	if (fd < 0)
 		return NULL;
 
-	if (fstat(fd, &stat))
+	if (fstat(fd, &stat)) {
+		close(fd);
 		return NULL;
+	}
 
 	dblen = stat.st_size;
 
 	db = mmap(NULL, dblen, PROT_READ, MAP_PRIVATE, fd, 0);
-	if (db == MAP_FAILED)
+	if (db == MAP_FAILED) {
+		close(fd);
 		return NULL;
+	}
 
 	header = crda_get_file_ptr(db, dblen, sizeof(*header), 0);
 
 	if (ntohl(header->magic) != REGDB_MAGIC)
-		return NULL;
+		goto out;
 
 	if (ntohl(header->version) != REGDB_VERSION)
-		return NULL;
+		goto out;
 
 	siglen = ntohl(header->signature_length);
 	/* adjust dblen so later sanity checks don't run into the signature */
 	dblen -= siglen;
 
 	if (dblen <= (int)sizeof(*header))
-		return NULL;
+		goto out;
 
 	/* verify signature */
 	if (!crda_verify_db_signature(db, dblen, siglen))
-		return NULL;
+		goto out;
 
 	num_countries = ntohl(header->reg_country_num);
 	countries = crda_get_file_ptr(db, dblen,
-- 
1.7.10.4