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authorLennart Poettering <lennart@poettering.net>2016-05-05 22:24:36 +0200
committerLennart Poettering <lennart@poettering.net>2016-05-05 22:24:36 +0200
commitfc2fffe7706ef269005bf4eef56570346c9ca3da (patch)
tree9e89ac76ee15de498d97b0d03ed7d764b61874ce /src/test/test-socket-util.c
parentd8fdc62037b5b0a9fd603ad5efd6b49f956f86b5 (diff)
tree-wide: introduce new SOCKADDR_UN_LEN() macro, and use it everywhere
The macro determines the right length of a AF_UNIX "struct sockaddr_un" to pass to connect() or bind(). It automatically figures out if the socket refers to an abstract namespace socket, or a socket in the file system, and properly handles the full length of the path field. This macro is not only safer, but also simpler to use, than the usual offsetof() + strlen() logic.
Diffstat (limited to 'src/test/test-socket-util.c')
-rw-r--r--src/test/test-socket-util.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/test-socket-util.c b/src/test/test-socket-util.c
index 33ff3755bc..9e01f3afd4 100644
--- a/src/test/test-socket-util.c
+++ b/src/test/test-socket-util.c
@@ -343,6 +343,21 @@ static void test_sockaddr_equal(void) {
assert_se(!sockaddr_equal(&b, &c));
}
+static void test_sockaddr_un_len(void) {
+ static const struct sockaddr_un fs = {
+ .sun_family = AF_UNIX,
+ .sun_path = "/foo/bar/waldo",
+ };
+
+ static const struct sockaddr_un abstract = {
+ .sun_family = AF_UNIX,
+ .sun_path = "\0foobar",
+ };
+
+ assert_se(SOCKADDR_UN_LEN(fs) == offsetof(struct sockaddr_un, sun_path) + strlen(fs.sun_path));
+ assert_se(SOCKADDR_UN_LEN(abstract) == offsetof(struct sockaddr_un, sun_path) + 1 + strlen(abstract.sun_path + 1));
+}
+
int main(int argc, char *argv[]) {
log_set_max_level(LOG_DEBUG);
@@ -363,5 +378,7 @@ int main(int argc, char *argv[]) {
test_sockaddr_equal();
+ test_sockaddr_un_len();
+
return 0;
}