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-rw-r--r--kms/client/kms_client.c94
-rw-r--r--kms/client/kms_client.h1
-rw-r--r--kms/kms_shared.h2
-rw-r--r--kms/server/kms_server.c94
4 files changed, 109 insertions, 82 deletions
diff --git a/kms/client/kms_client.c b/kms/client/kms_client.c
index 0b28b48..05cf8d7 100644
--- a/kms/client/kms_client.c
+++ b/kms/client/kms_client.c
@@ -174,12 +174,10 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
int result = -1;
self->kms_server_pid = -1;
self->initial_socket_fd = -1;
- self->initial_client_fd = -1;
self->initial_socket_path[0] = '\0';
self->socket_pair[0] = -1;
self->socket_pair[1] = -1;
struct sockaddr_un local_addr = {0};
- struct sockaddr_un remote_addr = {0};
if(!create_socket_path(self->initial_socket_path, sizeof(self->initial_socket_path))) {
fprintf(stderr, "gsr error: gsr_kms_client_init: failed to create path to kms socket\n");
@@ -231,20 +229,6 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
local_addr.sun_family = AF_UNIX;
strncpy_safe(local_addr.sun_path, self->initial_socket_path, sizeof(local_addr.sun_path));
- const mode_t prev_mask = umask(0000);
- int bind_res = bind(self->initial_socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path));
- umask(prev_mask);
-
- if(bind_res == -1) {
- fprintf(stderr, "gsr error: gsr_kms_client_init: failed to bind socket, error: %s\n", strerror(errno));
- goto err;
- }
-
- if(listen(self->initial_socket_fd, 1) == -1) {
- fprintf(stderr, "gsr error: gsr_kms_client_init: failed to listen on socket, error: %s\n", strerror(errno));
- goto err;
- }
-
pid_t pid = fork();
if(pid == -1) {
fprintf(stderr, "gsr error: gsr_kms_client_init: fork failed, error: %s\n", strerror(errno));
@@ -271,41 +255,50 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
self->kms_server_pid = pid;
}
- fprintf(stderr, "gsr info: gsr_kms_client_init: waiting for server to connect\n");
- for(;;) {
- struct timeval tv;
- fd_set rfds;
- FD_ZERO(&rfds);
- FD_SET(self->initial_socket_fd, &rfds);
-
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000; // 100 ms
-
- int select_res = select(1 + self->initial_socket_fd, &rfds, NULL, NULL, &tv);
- if(select_res > 0) {
- socklen_t sock_len = 0;
- self->initial_client_fd = accept(self->initial_socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
- if(self->initial_client_fd == -1) {
- fprintf(stderr, "gsr error: gsr_kms_client_init: accept failed on socket, error: %s\n", strerror(errno));
- goto err;
+ fprintf(stderr, "gsr info: connecting to the server\n");
+ bool connected = false;
+ while(true) {
+ struct sockaddr_un remote_addr = {0};
+ remote_addr.sun_family = AF_UNIX;
+ strncpy_safe(remote_addr.sun_path, self->initial_socket_path, sizeof(remote_addr.sun_path));
+ // TODO: Check if parent disconnected
+ if(connect(self->initial_socket_fd, (struct sockaddr*)&remote_addr, sizeof(remote_addr.sun_family) + strlen(remote_addr.sun_path)) == -1) {
+ if(errno == ECONNREFUSED || errno == ENOENT) {
+ goto next;
+ } else if(errno == EISCONN) {
+ connected = true;
+ break;
}
+
+ fprintf(stderr, "gsr error: gsr_kms_client_init: connect failed, error: %s (%d)\n", strerror(errno), errno);
+ goto err;
+ }
+
+ next:
+ if(connected)
break;
- } else {
- int status = 0;
- int wait_result = waitpid(self->kms_server_pid, &status, WNOHANG);
- if(wait_result != 0) {
- int exit_code = -1;
- if(WIFEXITED(status))
- exit_code = WEXITSTATUS(status);
- fprintf(stderr, "gsr error: gsr_kms_client_init: kms server died or never started, exit code: %d\n", exit_code);
- self->kms_server_pid = -1;
- if(exit_code != 0)
- result = exit_code;
- goto err;
- }
+
+ int status = 0;
+ int wait_result = waitpid(self->kms_server_pid, &status, WNOHANG);
+ if(wait_result != 0) {
+ int exit_code = -1;
+ if(WIFEXITED(status))
+ exit_code = WEXITSTATUS(status);
+ fprintf(stderr, "gsr error: gsr_kms_client_init: kms server died or never started, exit code: %d\n", exit_code);
+ self->kms_server_pid = -1;
+ if(exit_code != 0)
+ result = exit_code;
+ goto err;
}
+ usleep(30 * 1000); // 30 milliseconds
+ }
+
+ if(connected) {
+ fprintf(stderr, "gsr info: connected to the server\n");
+ } else {
+ fprintf(stderr, "gsr error: gsr_kms_client_init: failed to connect to the server\n");
+ goto err;
}
- fprintf(stderr, "gsr info: gsr_kms_client_init: server connected\n");
fprintf(stderr, "gsr info: replacing file-backed unix domain socket with socketpair\n");
if(gsr_kms_client_replace_connection(self) != 0)
@@ -322,11 +315,6 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
}
void cleanup_socket(gsr_kms_client *self, bool kill_server) {
- if(self->initial_client_fd != -1) {
- close(self->initial_client_fd);
- self->initial_client_fd = -1;
- }
-
if(self->initial_socket_fd != -1) {
close(self->initial_socket_fd);
self->initial_socket_fd = -1;
@@ -366,7 +354,7 @@ int gsr_kms_client_replace_connection(gsr_kms_client *self) {
request.version = GSR_KMS_PROTOCOL_VERSION;
request.type = KMS_REQUEST_TYPE_REPLACE_CONNECTION;
request.new_connection_fd = self->socket_pair[GSR_SOCKET_PAIR_REMOTE];
- if(send_msg_to_server(self->initial_client_fd, &request) == -1) {
+ if(send_msg_to_server(self->initial_socket_fd, &request) == -1) {
fprintf(stderr, "gsr error: gsr_kms_client_replace_connection: failed to send request message to server\n");
return -1;
}
diff --git a/kms/client/kms_client.h b/kms/client/kms_client.h
index 02f2dd1..27caca2 100644
--- a/kms/client/kms_client.h
+++ b/kms/client/kms_client.h
@@ -8,7 +8,6 @@
typedef struct {
pid_t kms_server_pid;
int initial_socket_fd;
- int initial_client_fd;
char initial_socket_path[PATH_MAX];
int socket_pair[2];
} gsr_kms_client;
diff --git a/kms/kms_shared.h b/kms/kms_shared.h
index b72d75d..d31302b 100644
--- a/kms/kms_shared.h
+++ b/kms/kms_shared.h
@@ -4,7 +4,7 @@
#include <stdint.h>
#include <stdbool.h>
-#define GSR_KMS_PROTOCOL_VERSION 1
+#define GSR_KMS_PROTOCOL_VERSION 2
#define GSR_KMS_MAX_PLANES 32
typedef enum {
diff --git a/kms/server/kms_server.c b/kms/server/kms_server.c
index 6062074..9a64543 100644
--- a/kms/server/kms_server.c
+++ b/kms/server/kms_server.c
@@ -9,6 +9,7 @@
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
+#include <sys/stat.h>
#include <time.h>
#include <xf86drm.h>
@@ -361,6 +362,7 @@ static void strncpy_safe(char *dst, const char *src, int len) {
int main(int argc, char **argv) {
int res = 0;
int socket_fd = 0;
+ int client_socket_fd = 0;
gsr_drm drm;
drm.drmfd = 0;
drm.planes = NULL;
@@ -407,36 +409,59 @@ int main(int argc, char **argv) {
c2crtc_map.num_maps = 0;
map_crtc_to_connector_ids(&drm, &c2crtc_map);
- fprintf(stderr, "kms server info: connecting to the client\n");
+ struct sockaddr_un local_addr = {0};
+ local_addr.sun_family = AF_UNIX;
+ strncpy_safe(local_addr.sun_path, domain_socket_path, sizeof(local_addr.sun_path));
+
+ const mode_t prev_mask = umask(0000);
+ const int bind_res = bind(socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path));
+ umask(prev_mask);
+
+ if(bind_res == -1) {
+ fprintf(stderr, "kms server error: failed to bind socket, error: %s\n", strerror(errno));
+ res = 2;
+ goto done;
+ }
+
+ if(listen(socket_fd, 1) == -1) {
+ fprintf(stderr, "kms server error: failed to listen on socket, error: %s\n", strerror(errno));
+ res = 2;
+ goto done;
+ }
+
+ fprintf(stderr, "kms server info: waiting for client to connect\n");
bool connected = false;
const double connect_timeout_sec = 5.0;
const double start_time = clock_get_monotonic_seconds();
while(clock_get_monotonic_seconds() - start_time < connect_timeout_sec) {
- struct sockaddr_un remote_addr = {0};
- remote_addr.sun_family = AF_UNIX;
- strncpy_safe(remote_addr.sun_path, domain_socket_path, sizeof(remote_addr.sun_path));
- // TODO: Check if parent disconnected
- if(connect(socket_fd, (struct sockaddr*)&remote_addr, sizeof(remote_addr.sun_family) + strlen(remote_addr.sun_path)) == -1) {
- if(errno == ECONNREFUSED || errno == ENOENT) {
- goto next;
- } else if(errno == EISCONN) {
- connected = true;
- break;
+ struct timeval tv;
+ fd_set rfds;
+ FD_ZERO(&rfds);
+ FD_SET(socket_fd, &rfds);
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 100 * 1000; // 100 ms
+
+ int select_res = select(1 + socket_fd, &rfds, NULL, NULL, &tv);
+ if(select_res > 0) {
+ struct sockaddr_un remote_addr = {0};
+ socklen_t sock_len = 0;
+ client_socket_fd = accept(socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
+ if(client_socket_fd == -1) {
+ fprintf(stderr, "kms server error: accept failed on socket, error: %s\n", strerror(errno));
+ res = 2;
+ goto done;
}
- fprintf(stderr, "kms server error: connect failed, error: %s (%d)\n", strerror(errno), errno);
- res = 2;
- goto done;
+ connected = true;
+ break;
}
-
- next:
- usleep(30 * 1000); // 30 milliseconds
}
if(connected) {
- fprintf(stderr, "kms server info: connected to the client\n");
+ fprintf(stderr, "kms server info: client connected\n");
} else {
- fprintf(stderr, "kms server error: failed to connect to the client in %f seconds\n", connect_timeout_sec);
+ fprintf(stderr, "kms server error: client failed to connect in %f seconds\n", connect_timeout_sec);
res = 2;
goto done;
}
@@ -447,7 +472,7 @@ int main(int argc, char **argv) {
request.type = -1;
request.new_connection_fd = 0;
- const int recv_res = recv_msg_from_client(socket_fd, &request);
+ const int recv_res = recv_msg_from_client(client_socket_fd, &request);
if(recv_res == 0) {
fprintf(stderr, "kms server info: kms client shutdown, shutting down the server\n");
res = 3;
@@ -479,18 +504,29 @@ int main(int argc, char **argv) {
response.num_fds = 0;
if(request.new_connection_fd > 0) {
- if(socket_fd > 0)
+ if(socket_fd > 0) {
close(socket_fd);
- socket_fd = request.new_connection_fd;
+ socket_fd = -1;
+ }
+
+ if(client_socket_fd > 0)
+ close(client_socket_fd);
+
+ client_socket_fd = request.new_connection_fd;
response.result = KMS_RESULT_OK;
- if(send_msg_to_client(socket_fd, &response) == -1)
+ if(send_msg_to_client(client_socket_fd, &response) == -1)
fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_REPLACE_CONNECTION request\n");
+
+ if(domain_socket_path) {
+ remove(domain_socket_path);
+ domain_socket_path = NULL;
+ }
} else {
response.result = KMS_RESULT_INVALID_REQUEST;
snprintf(response.err_msg, sizeof(response.err_msg), "received invalid connection fd");
fprintf(stderr, "kms server error: %s\n", response.err_msg);
- if(send_msg_to_client(socket_fd, &response) == -1)
+ if(send_msg_to_client(client_socket_fd, &response) == -1)
fprintf(stderr, "kms server error: failed to respond to client request\n");
}
@@ -502,10 +538,10 @@ int main(int argc, char **argv) {
response.num_fds = 0;
if(kms_get_fb(&drm, &response, &c2crtc_map) == 0) {
- if(send_msg_to_client(socket_fd, &response) == -1)
+ if(send_msg_to_client(client_socket_fd, &response) == -1)
fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_GET_KMS request\n");
} else {
- if(send_msg_to_client(socket_fd, &response) == -1)
+ if(send_msg_to_client(client_socket_fd, &response) == -1)
fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_GET_KMS request\n");
}
@@ -523,7 +559,7 @@ int main(int argc, char **argv) {
snprintf(response.err_msg, sizeof(response.err_msg), "invalid request type %d, expected %d (%s)", request.type, KMS_REQUEST_TYPE_GET_KMS, "KMS_REQUEST_TYPE_GET_KMS");
fprintf(stderr, "kms server error: %s\n", response.err_msg);
- if(send_msg_to_client(socket_fd, &response) == -1)
+ if(send_msg_to_client(client_socket_fd, &response) == -1)
fprintf(stderr, "kms server error: failed to respond to client request\n");
break;
@@ -536,7 +572,11 @@ int main(int argc, char **argv) {
drmModeFreePlaneResources(drm.planes);
if(drm.drmfd > 0)
close(drm.drmfd);
+ if(client_socket_fd > 0)
+ close(client_socket_fd);
if(socket_fd > 0)
close(socket_fd);
+ if(domain_socket_path)
+ remove(domain_socket_path);
return res;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 03:58:31 +0000