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-rw-r--r--hw/xquartz/mach-startup/bundle-main.c145
-rw-r--r--hw/xquartz/mach-startup/mach_startup.defs4
-rw-r--r--hw/xquartz/mach-startup/stub.c93
3 files changed, 192 insertions, 50 deletions
diff --git a/hw/xquartz/mach-startup/bundle-main.c b/hw/xquartz/mach-startup/bundle-main.c
index 4ddd82f7b..c9751236f 100644
--- a/hw/xquartz/mach-startup/bundle-main.c
+++ b/hw/xquartz/mach-startup/bundle-main.c
@@ -37,6 +37,7 @@
#include <stdlib.h>
#include <pthread.h>
#include <stdbool.h>
+
#include <sys/socket.h>
#include <sys/un.h>
@@ -120,68 +121,140 @@ static pthread_t create_thread(void *func, void *arg) {
}
/*** $DISPLAY handoff ***/
-static char display_handoff_socket[PATH_MAX + 1];
-
-kern_return_t do_get_display_handoff_socket(mach_port_t port, string_t filename) {
- strlcpy(filename, display_handoff_socket, STRING_T_SIZE);
- fprintf(stderr, "Telling him the filename is %s = %s\n", filename, display_handoff_socket);
- return KERN_SUCCESS;
-}
-
/* From darwinEvents.c ... but don't want to pull in all the server cruft */
void DarwinListenOnOpenFD(int fd);
-static void accept_fd_handoff(int connectedSocket) {
- int fd;
- return;
- DarwinListenOnOpenFD(fd);
+static void accept_fd_handoff(int connected_fd) {
+ int launchd_fd;
+
+ char databuf[] = "display";
+ struct iovec iov[1];
+
+ iov[0].iov_base = databuf;
+ iov[0].iov_len = sizeof(databuf);
+
+ union {
+ struct cmsghdr hdr;
+ char bytes[CMSG_SPACE(sizeof(int))];
+ } buf;
+
+ struct msghdr msg;
+ msg.msg_iov = iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = buf.bytes;
+ msg.msg_controllen = sizeof(buf);
+ msg.msg_name = 0;
+ msg.msg_namelen = 0;
+ msg.msg_flags = 0;
+
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+
+ msg.msg_controllen = cmsg->cmsg_len;
+
+ *((int*)CMSG_DATA(cmsg)) = -1;
+
+ if(recvmsg(connected_fd, &msg, 0) < 0) {
+ fprintf(stderr, "Error receiving $DISPLAY file descriptor: %s\n", strerror(errno));
+ return;
+ }
+
+ launchd_fd = *((int*)CMSG_DATA(cmsg));
+
+ if(launchd_fd > 0)
+ DarwinListenOnOpenFD(launchd_fd);
+ else
+ fprintf(stderr, "Error receiving $DISPLAY file descriptor, no descriptor received? %d\n", launchd_fd);
}
+typedef struct {
+ string_t socket_filename;
+ pthread_mutex_t lock;
+ pthread_cond_t cond;
+ kern_return_t retval;
+} handoff_data_t;
+
/* This thread loops accepting incoming connections and handing off the file
* descriptor for the new connection to accept_fd_handoff()
*/
static void socket_handoff_thread(void *arg) {
+ handoff_data_t *data = (handoff_data_t *)arg;
+ string_t filename;
struct sockaddr_un servaddr_un;
struct sockaddr *servaddr;
- int handoff_fd;
- int servaddr_len;
+ socklen_t servaddr_len;
+ int handoff_fd, connected_fd;
+
+ /* We need to save it since data dies after we pthread_cond_broadcast */
+ strlcpy(filename, data->socket_filename, STRING_T_SIZE);
- /* Wipe ourselves clean */
- memset (&servaddr_un, 0, sizeof (struct sockaddr_un));
+ /* Make sure we only run once the dispatch thread is waiting for us */
+ pthread_mutex_lock(&data->lock);
+ /* Setup servaddr_un */
+ memset (&servaddr_un, 0, sizeof (struct sockaddr_un));
servaddr_un.sun_family = AF_UNIX;
- strcpy(servaddr_un.sun_path, display_handoff_socket);
+ strlcpy(servaddr_un.sun_path, filename, sizeof(servaddr_un.sun_path));
+
servaddr = (struct sockaddr *) &servaddr_un;
- servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(display_handoff_socket);
+ servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(filename);
handoff_fd = socket(AF_UNIX, SOCK_STREAM, 0);
if(handoff_fd == 0) {
- fprintf(stderr, "Failed to create socket: %s - %s\n", display_handoff_socket, strerror(errno));
+ fprintf(stderr, "Failed to create socket: %s - %s\n", filename, strerror(errno));
+ data->retval = EXIT_FAILURE;
return;
- exit(EXIT_FAILURE);
}
if(bind(handoff_fd, servaddr, servaddr_len) != 0) {
- fprintf(stderr, "Failed to bind socket: %s - %s\n", display_handoff_socket, strerror(errno));
+ fprintf(stderr, "Failed to bind socket: %s - %s\n", filename, strerror(errno));
+ data->retval = EXIT_FAILURE;
return;
- exit(EXIT_FAILURE);
}
if(listen(handoff_fd, 10) != 0) {
- fprintf(stderr, "Failed to listen to socket: %s - %s\n", display_handoff_socket, strerror(errno));
+ fprintf(stderr, "Failed to listen to socket: %s - %s\n", filename, strerror(errno));
+ data->retval = EXIT_FAILURE;
return;
- exit(EXIT_FAILURE);
}
+
+ /* Let the dispatch thread now tell the caller that we're listening */
+ data->retval = EXIT_SUCCESS;
+ pthread_mutex_unlock(&data->lock);
+ pthread_cond_broadcast(&data->cond);
- while(true) {
- int connectedSocket = accept(handoff_fd, NULL, NULL);
-
- if(connectedSocket == -1) {
- fprintf(stderr, "Failed to accept incoming connection on socket: %s - %s\n", display_handoff_socket, strerror(errno));
- continue;
- }
- accept_fd_handoff(connectedSocket);
+ connected_fd = accept(handoff_fd, NULL, NULL);
+
+ /* We delete this temporary socket after we get the connection */
+ unlink(filename);
+
+ if(connected_fd == -1) {
+ fprintf(stderr, "Failed to accept incoming connection on socket: %s - %s\n", filename, strerror(errno));
+ return;
}
+
+ /* Now actually get the passed file descriptor from this connection */
+ accept_fd_handoff(connected_fd);
+
+ close(handoff_fd);
+}
+
+kern_return_t do_prep_fd_handoff(mach_port_t port, string_t socket_filename) {
+ handoff_data_t handoff_data;
+
+ pthread_mutex_init(&handoff_data.lock, NULL);
+ pthread_cond_init(&handoff_data.cond, NULL);
+ strlcpy(handoff_data.socket_filename, socket_filename, STRING_T_SIZE);
+
+ pthread_mutex_lock(&handoff_data.lock);
+
+ create_thread(socket_handoff_thread, &handoff_data);
+
+ pthread_cond_wait(&handoff_data.cond, &handoff_data.lock);
+
+ return handoff_data.retval;
}
/*** Server Startup ***/
@@ -334,14 +407,6 @@ int main(int argc, char **argv, char **envp) {
return EXIT_FAILURE;
}
- /* Figure out what our handoff socket will be
- * TODO: cleanup on exit.
- */
- tmpnam(display_handoff_socket);
- create_thread(socket_handoff_thread, NULL);
-
- fprintf(stderr, "Hi\n");
-
/* Check if we need to do something other than listen, and make another
* thread handle it.
*/
diff --git a/hw/xquartz/mach-startup/mach_startup.defs b/hw/xquartz/mach-startup/mach_startup.defs
index 05bdf569f..19c105cb2 100644
--- a/hw/xquartz/mach-startup/mach_startup.defs
+++ b/hw/xquartz/mach-startup/mach_startup.defs
@@ -41,6 +41,6 @@ routine start_x11_server(
argv : string_array_t;
envp : string_array_t);
-routine get_display_handoff_socket(
+routine prep_fd_handoff(
port : mach_port_t;
- filename : string_t);
+ socket_filename : string_t);
diff --git a/hw/xquartz/mach-startup/stub.c b/hw/xquartz/mach-startup/stub.c
index 5fdbad882..0a9ab669c 100644
--- a/hw/xquartz/mach-startup/stub.c
+++ b/hw/xquartz/mach-startup/stub.c
@@ -37,6 +37,9 @@
#include <unistd.h>
#include <errno.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
#define kX11AppBundleId "org.x.X11"
#define kX11AppBundlePath "/Contents/MacOS/X11"
@@ -47,6 +50,13 @@
#include "launchd_fd.h"
+#ifndef BUILD_DATE
+#define BUILD_DATE "?"
+#endif
+#ifndef XSERVER_VERSION
+#define XSERVER_VERSION "?"
+#endif
+
static char x11_path[PATH_MAX + 1];
static void set_x11_path() {
@@ -103,12 +113,75 @@ static void set_x11_path() {
}
}
-#ifndef BUILD_DATE
-#define BUILD_DATE "?"
-#endif
-#ifndef XSERVER_VERSION
-#define XSERVER_VERSION "?"
-#endif
+static void send_fd_handoff(int connected_fd, int launchd_fd) {
+ char databuf[] = "display";
+ struct iovec iov[1];
+
+ iov[0].iov_base = databuf;
+ iov[0].iov_len = sizeof(databuf);
+
+ union {
+ struct cmsghdr hdr;
+ char bytes[CMSG_SPACE(sizeof(int))];
+ } buf;
+
+ struct msghdr msg;
+ msg.msg_iov = iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = buf.bytes;
+ msg.msg_controllen = sizeof(buf);
+ msg.msg_name = 0;
+ msg.msg_namelen = 0;
+ msg.msg_flags = 0;
+
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR (&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+
+ msg.msg_controllen = cmsg->cmsg_len;
+
+ *((int*)CMSG_DATA(cmsg)) = launchd_fd;
+
+ if (sendmsg(connected_fd, &msg, 0) < 0) {
+ fprintf(stderr, "Error sending $DISPLAY file descriptor: %s\n", strerror(errno));
+ return;
+ }
+
+ fprintf(stderr, "send %d %d %d %s\n", connected_fd, launchd_fd, errno, strerror(errno));
+}
+
+static void handoff_fd(const char *filename, int launchd_fd) {
+ struct sockaddr_un servaddr_un;
+ struct sockaddr *servaddr;
+ socklen_t servaddr_len;
+ int handoff_fd, connected_fd;
+
+ /* Setup servaddr_un */
+ memset (&servaddr_un, 0, sizeof (struct sockaddr_un));
+ servaddr_un.sun_family = AF_UNIX;
+ strlcpy(servaddr_un.sun_path, filename, sizeof(servaddr_un.sun_path));
+
+ servaddr = (struct sockaddr *) &servaddr_un;
+ servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(filename);
+
+ handoff_fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if(handoff_fd == 0) {
+ fprintf(stderr, "Failed to create socket: %s - %s\n", filename, strerror(errno));
+ return;
+ }
+
+ connected_fd = connect(handoff_fd, servaddr, servaddr_len);
+
+ if(connected_fd == -1) {
+ fprintf(stderr, "Failed to establish connection on socket: %s - %s\n", filename, strerror(errno));
+ return;
+ }
+
+ send_fd_handoff(connected_fd, launchd_fd);
+
+ close(handoff_fd);
+}
int main(int argc, char **argv, char **envp) {
#ifdef NEW_LAUNCH_METHOD
@@ -169,8 +242,12 @@ int main(int argc, char **argv, char **envp) {
/* Handoff the $DISPLAY FD */
if(launchd_fd != -1) {
- get_display_handoff_socket(mp, handoff_socket);
- fprintf(stderr, "Handoff socket: %s %d\n", handoff_socket, launchd_fd);
+ tmpnam(handoff_socket);
+ if(prep_fd_handoff(mp, handoff_socket) == KERN_SUCCESS) {
+ handoff_fd(handoff_socket, launchd_fd);
+ } else {
+ fprintf(stderr, "Unable to hand of $DISPLAY file descriptor\n");
+ }
}
/* Count envp */
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-22 01:56:10 +0000