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authorDavid Oberhollenzer <goliath@infraroot.at>2019-03-15 11:23:40 +0100
committerDavid Oberhollenzer <goliath@infraroot.at>2019-03-18 14:15:58 +0100
commitc78bbd2f731ae44c7d2588b9bb3d19005f192fc6 (patch)
treef71e53964f09eba1a6f7c98cccdf21c78ff19119
parentc544fcc7a30d9a934b0f8d098e000259e8b9ed62 (diff)
Add helpers for initd socket
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
-rw-r--r--lib/Makemodule.am2
-rw-r--r--lib/include/initsock.h23
-rw-r--r--lib/init/init_socket_create.c34
-rw-r--r--lib/init/init_socket_open.c46
-rw-r--r--lib/init/init_socket_send_request.c28
5 files changed, 133 insertions, 0 deletions
diff --git a/lib/Makemodule.am b/lib/Makemodule.am
index 258cfe3..901cd60 100644
--- a/lib/Makemodule.am
+++ b/lib/Makemodule.am
@@ -1,6 +1,8 @@
libinit_a_SOURCES = lib/init/delsvc.c lib/init/svcmap.c lib/init/rdsvc.c
libinit_a_SOURCES += lib/init/svcscan.c lib/init/del_svc_list.c
libinit_a_SOURCES += lib/init/svc_tsort.c lib/include/service.h
+libinit_a_SOURCES += lib/init/init_socket_open.c lib/init/init_socket_create.c
+libinit_a_SOURCES += lib/include/initsock.h lib/init/init_socket_send_request.c
libinit_a_CPPFLAGS = $(AM_CPPFLAGS)
libinit_a_CFLAGS = $(AM_CFLAGS)
diff --git a/lib/include/initsock.h b/lib/include/initsock.h
new file mode 100644
index 0000000..5c1437c
--- /dev/null
+++ b/lib/include/initsock.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: ISC */
+#ifndef INITSOCK_H
+#define INITSOCK_H
+
+#include "config.h"
+
+#define INIT_SOCK_PATH SOCKDIR "/init.sock"
+
+typedef enum {
+ EIR_STATUS = 0x00,
+} E_INIT_REQUEST;
+
+typedef struct {
+ E_INIT_REQUEST rq;
+} init_request_t;
+
+int init_socket_create(void);
+
+int init_socket_open(const char *tmppath);
+
+int init_socket_send_request(int fd, E_INIT_REQUEST rq);
+
+#endif /* INITSOCK_H */
diff --git a/lib/init/init_socket_create.c b/lib/init/init_socket_create.c
new file mode 100644
index 0000000..a5a0972
--- /dev/null
+++ b/lib/init/init_socket_create.c
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: ISC */
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "initsock.h"
+
+int init_socket_create(void)
+{
+ struct sockaddr_un un;
+ int fd;
+
+ fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ perror("socket");
+ return -1;
+ }
+
+ memset(&un, 0, sizeof(un));
+ un.sun_family = AF_UNIX;
+
+ strcpy(un.sun_path, INIT_SOCK_PATH);
+ unlink(INIT_SOCK_PATH);
+
+ if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
+ perror("bind: " INIT_SOCK_PATH);
+ close(fd);
+ unlink(INIT_SOCK_PATH);
+ return -1;
+ }
+
+ return fd;
+}
diff --git a/lib/init/init_socket_open.c b/lib/init/init_socket_open.c
new file mode 100644
index 0000000..d0cf168
--- /dev/null
+++ b/lib/init/init_socket_open.c
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: ISC */
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+#include "initsock.h"
+
+int init_socket_open(const char *tmppath)
+{
+ struct sockaddr_un un;
+ int fd;
+
+ fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+ if (fd < 0) {
+ perror("socket");
+ return -1;
+ }
+
+ memset(&un, 0, sizeof(un));
+ un.sun_family = AF_UNIX;
+
+ strcpy(un.sun_path, tmppath);
+
+ if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
+ fprintf(stderr, "bind: %s: %s", tmppath, strerror(errno));
+ close(fd);
+ unlink(tmppath);
+ return -1;
+ }
+
+ memset(&un, 0, sizeof(un));
+ un.sun_family = AF_UNIX;
+
+ strcpy(un.sun_path, INIT_SOCK_PATH);
+
+ if (connect(fd, (struct sockaddr *)&un, sizeof(un))) {
+ perror("connect: " INIT_SOCK_PATH);
+ close(fd);
+ return -1;
+ }
+
+ return fd;
+}
diff --git a/lib/init/init_socket_send_request.c b/lib/init/init_socket_send_request.c
new file mode 100644
index 0000000..dd88856
--- /dev/null
+++ b/lib/init/init_socket_send_request.c
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: ISC */
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "initsock.h"
+
+int init_socket_send_request(int fd, E_INIT_REQUEST rq)
+{
+ init_request_t request;
+ ssize_t ret;
+
+ memset(&request, 0, sizeof(request));
+ request.rq = rq;
+
+retry:
+ ret = write(fd, &request, sizeof(request));
+
+ if (ret < 0) {
+ if (errno == EINTR)
+ goto retry;
+ perror(INIT_SOCK_PATH);
+ return -1;
+ }
+
+ return 0;
+}