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-rw-r--r--unix-socket.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/unix-socket.c b/unix-socket.c
new file mode 100644
index 0000000000..84b15099f2
--- /dev/null
+++ b/unix-socket.c
@@ -0,0 +1,56 @@
+#include "cache.h"
+#include "unix-socket.h"
+
+static int unix_stream_socket(void)
+{
+ int fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd < 0)
+ die_errno("unable to create socket");
+ return fd;
+}
+
+static void unix_sockaddr_init(struct sockaddr_un *sa, const char *path)
+{
+ int size = strlen(path) + 1;
+ if (size > sizeof(sa->sun_path))
+ die("socket path is too long to fit in sockaddr");
+ memset(sa, 0, sizeof(*sa));
+ sa->sun_family = AF_UNIX;
+ memcpy(sa->sun_path, path, size);
+}
+
+int unix_stream_connect(const char *path)
+{
+ int fd;
+ struct sockaddr_un sa;
+
+ unix_sockaddr_init(&sa, path);
+ fd = unix_stream_socket();
+ if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
+ close(fd);
+ return -1;
+ }
+ return fd;
+}
+
+int unix_stream_listen(const char *path)
+{
+ int fd;
+ struct sockaddr_un sa;
+
+ unix_sockaddr_init(&sa, path);
+ fd = unix_stream_socket();
+
+ unlink(path);
+ if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
+ close(fd);
+ return -1;
+ }
+
+ if (listen(fd, 5) < 0) {
+ close(fd);
+ return -1;
+ }
+
+ return fd;
+}