tools: Use sendfile() instead of mmap() for AF_ALG test utility

1 files changed, 4 insertions, 13 deletions

diff --git a/tools/alg-test.c b/tools/alg-test.c
index e10e11d5..33c39756 100644
--- a/tools/alg-test.c
+++ b/tools/alg-test.c
@@ -28,17 +28,17 @@
 #include <unistd.h>
 #include <string.h>
 #include <sys/stat.h>
-#include <sys/mman.h>
+#include <sys/sendfile.h>
 #include <sys/socket.h>
 #include <linux/if_alg.h>
 
-static void build_hash(int sk, char *map, size_t size, const char *pathname)
+static void build_hash(int sk, int fd, size_t size, const char *pathname)
 {
 	unsigned char hash[20];
 	ssize_t written, length;
 	int i;
 
-	written = send(sk, map, size, 0);
+	written = sendfile(sk, fd, NULL, size);
 	if (written < 0)
 		perror("Failed to write data");
 
@@ -58,7 +58,6 @@ static void build_hash(int sk, char *map, size_t size, const char *pathname)
 static int create_hash(int sk, const char *pathname)
 {
 	struct stat st;
-	char *map;
 	int fd;
 
 	fd = open(pathname, O_RDONLY);
@@ -70,15 +69,7 @@ static int create_hash(int sk, const char *pathname)
 		return -1;
 	}
 
-	map = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
-	if (map == NULL || map == MAP_FAILED) {
-		close(fd);
-		return -1;
-	}
-
-	build_hash(sk, map, st.st_size, pathname);
-
-	munmap(map, st.st_size);
+	build_hash(sk, fd, st.st_size, pathname);
 
 	close(fd);