kms client/server: replace unix domain socket file with socketpair after connecting (fixes issue of .gsr-kms-socket files remaining in $HOME)
This commit is contained in:
parent
1ac862d155
commit
290db495ff
1
TODO
1
TODO
@ -107,3 +107,4 @@ Make it possible to select which /dev/dri/card* to use, but that requires opengl
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Support I915_FORMAT_MOD_Y_TILED_CCS (and other power saving modifiers, see https://trac.ffmpeg.org/ticket/8542). The only fix may be to use desktop portal for recording. This issue doesn't appear on x11 since these modifiers are not used by xorg server.
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Support I915_FORMAT_MOD_Y_TILED_CCS (and other power saving modifiers, see https://trac.ffmpeg.org/ticket/8542). The only fix may be to use desktop portal for recording. This issue doesn't appear on x11 since these modifiers are not used by xorg server.
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Test if p2 state can be worked around by using pure nvenc api and overwriting cuInit/cuCtxCreate* to not do anything. Cuda might be loaded when using nvenc but it might not be used, with certain record options? (such as h264 p5).
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Test if p2 state can be worked around by using pure nvenc api and overwriting cuInit/cuCtxCreate* to not do anything. Cuda might be loaded when using nvenc but it might not be used, with certain record options? (such as h264 p5).
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nvenc uses cuda when using b frames and rgb->yuv conversion, so convert the image ourselves instead.
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@ -12,6 +12,12 @@
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#include <sys/wait.h>
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#include <sys/wait.h>
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#include <sys/capability.h>
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#include <sys/capability.h>
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#define GSR_SOCKET_PAIR_LOCAL 0
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#define GSR_SOCKET_PAIR_REMOTE 1
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static void cleanup_initial_socket(gsr_kms_client *self, bool kill_server);
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static int gsr_kms_client_replace_connection(gsr_kms_client *self);
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static bool generate_random_characters(char *buffer, int buffer_size, const char *alphabet, size_t alphabet_size) {
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static bool generate_random_characters(char *buffer, int buffer_size, const char *alphabet, size_t alphabet_size) {
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int fd = open("/dev/urandom", O_RDONLY);
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int fd = open("/dev/urandom", O_RDONLY);
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if(fd == -1) {
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if(fd == -1) {
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@ -34,6 +40,14 @@ static bool generate_random_characters(char *buffer, int buffer_size, const char
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return true;
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return true;
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}
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}
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static void close_fds(gsr_kms_response *response) {
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for(int i = 0; i < response->num_fds; ++i) {
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if(response->fds[i].fd > 0)
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close(response->fds[i].fd);
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response->fds[i].fd = 0;
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}
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}
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static int send_msg_to_server(int server_fd, gsr_kms_request *request) {
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static int send_msg_to_server(int server_fd, gsr_kms_request *request) {
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struct iovec iov;
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struct iovec iov;
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iov.iov_base = request;
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iov.iov_base = request;
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@ -72,9 +86,7 @@ static int recv_msg_from_server(int server_fd, gsr_kms_response *response) {
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response->fds[i].fd = fds[i];
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response->fds[i].fd = fds[i];
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}
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}
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} else {
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} else {
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for(int i = 0; i < response->num_fds; ++i) {
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close_fds(response);
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response->fds[i].fd = 0;
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}
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}
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}
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}
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}
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@ -142,13 +154,15 @@ static bool find_program_in_path(const char *program_name, char *filepath, int f
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int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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int result = -1;
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int result = -1;
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self->kms_server_pid = -1;
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self->kms_server_pid = -1;
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self->socket_fd = -1;
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self->initial_socket_fd = -1;
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self->client_fd = -1;
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self->initial_client_fd = -1;
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self->socket_path[0] = '\0';
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self->initial_socket_path[0] = '\0';
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self->socket_pair[0] = -1;
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self->socket_pair[1] = -1;
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struct sockaddr_un local_addr = {0};
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struct sockaddr_un local_addr = {0};
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struct sockaddr_un remote_addr = {0};
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struct sockaddr_un remote_addr = {0};
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if(!create_socket_path(self->socket_path, sizeof(self->socket_path))) {
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if(!create_socket_path(self->initial_socket_path, sizeof(self->initial_socket_path))) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to create path to kms socket\n");
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to create path to kms socket\n");
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return -1;
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return -1;
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}
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}
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@ -185,20 +199,25 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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}
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}
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}
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}
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self->socket_fd = socket(AF_UNIX, SOCK_STREAM, 0);
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if(socketpair(AF_UNIX, SOCK_STREAM, 0, self->socket_pair) == -1) {
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if(self->socket_fd == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: socketpair failed, error: %s\n", strerror(errno));
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goto err;
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}
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self->initial_socket_fd = socket(AF_UNIX, SOCK_STREAM, 0);
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if(self->initial_socket_fd == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: socket failed, error: %s\n", strerror(errno));
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fprintf(stderr, "gsr error: gsr_kms_client_init: socket failed, error: %s\n", strerror(errno));
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goto err;
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goto err;
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}
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}
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local_addr.sun_family = AF_UNIX;
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local_addr.sun_family = AF_UNIX;
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strncpy_safe(local_addr.sun_path, self->socket_path, sizeof(local_addr.sun_path));
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strncpy_safe(local_addr.sun_path, self->initial_socket_path, sizeof(local_addr.sun_path));
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if(bind(self->socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path)) == -1) {
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if(bind(self->initial_socket_fd, (struct sockaddr*)&local_addr, sizeof(local_addr.sun_family) + strlen(local_addr.sun_path)) == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to bind socket, error: %s\n", strerror(errno));
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to bind socket, error: %s\n", strerror(errno));
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goto err;
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goto err;
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}
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}
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if(listen(self->socket_fd, 1) == -1) {
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if(listen(self->initial_socket_fd, 1) == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to listen on socket, error: %s\n", strerror(errno));
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fprintf(stderr, "gsr error: gsr_kms_client_init: failed to listen on socket, error: %s\n", strerror(errno));
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goto err;
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goto err;
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}
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}
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@ -209,13 +228,13 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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goto err;
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goto err;
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} else if(pid == 0) { /* child */
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} else if(pid == 0) { /* child */
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if(inside_flatpak) {
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if(inside_flatpak) {
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const char *args[] = { "flatpak-spawn", "--host", "pkexec", "flatpak", "run", "--command=gsr-kms-server", "com.dec05eba.gpu_screen_recorder", self->socket_path, card_path, NULL };
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const char *args[] = { "flatpak-spawn", "--host", "pkexec", "flatpak", "run", "--command=gsr-kms-server", "com.dec05eba.gpu_screen_recorder", self->initial_socket_path, card_path, NULL };
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execvp(args[0], (char *const*)args);
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execvp(args[0], (char *const*)args);
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} else if(has_perm) {
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} else if(has_perm) {
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const char *args[] = { server_filepath, self->socket_path, card_path, NULL };
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const char *args[] = { server_filepath, self->initial_socket_path, card_path, NULL };
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execvp(args[0], (char *const*)args);
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execvp(args[0], (char *const*)args);
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} else {
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} else {
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const char *args[] = { "pkexec", server_filepath, self->socket_path, card_path, NULL };
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const char *args[] = { "pkexec", server_filepath, self->initial_socket_path, card_path, NULL };
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execvp(args[0], (char *const*)args);
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execvp(args[0], (char *const*)args);
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}
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}
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fprintf(stderr, "gsr error: gsr_kms_client_init: execvp failed, error: %s\n", strerror(errno));
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fprintf(stderr, "gsr error: gsr_kms_client_init: execvp failed, error: %s\n", strerror(errno));
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@ -229,16 +248,16 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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struct timeval tv;
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struct timeval tv;
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fd_set rfds;
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fd_set rfds;
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FD_ZERO(&rfds);
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FD_ZERO(&rfds);
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FD_SET(self->socket_fd, &rfds);
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FD_SET(self->initial_socket_fd, &rfds);
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tv.tv_sec = 0;
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000; // 100 ms
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tv.tv_usec = 100 * 1000; // 100 ms
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int select_res = select(1 + self->socket_fd, &rfds, NULL, NULL, &tv);
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int select_res = select(1 + self->initial_socket_fd, &rfds, NULL, NULL, &tv);
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if(select_res > 0) {
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if(select_res > 0) {
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socklen_t sock_len = 0;
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socklen_t sock_len = 0;
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self->client_fd = accept(self->socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
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self->initial_client_fd = accept(self->initial_socket_fd, (struct sockaddr*)&remote_addr, &sock_len);
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if(self->client_fd == -1) {
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if(self->initial_client_fd == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_init: accept failed on socket, error: %s\n", strerror(errno));
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fprintf(stderr, "gsr error: gsr_kms_client_init: accept failed on socket, error: %s\n", strerror(errno));
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goto err;
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goto err;
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}
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}
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@ -260,6 +279,13 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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}
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}
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fprintf(stderr, "gsr info: gsr_kms_client_init: server connected\n");
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fprintf(stderr, "gsr info: gsr_kms_client_init: server connected\n");
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fprintf(stderr, "gsr info: replacing file-backed unix domain socket with socketpair\n");
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if(gsr_kms_client_replace_connection(self) != 0)
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goto err;
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cleanup_initial_socket(self, false);
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fprintf(stderr, "gsr info: using socketpair\n");
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return 0;
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return 0;
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err:
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err:
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@ -267,47 +293,104 @@ int gsr_kms_client_init(gsr_kms_client *self, const char *card_path) {
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return result;
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return result;
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}
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}
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void gsr_kms_client_deinit(gsr_kms_client *self) {
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void cleanup_initial_socket(gsr_kms_client *self, bool kill_server) {
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if(self->client_fd != -1) {
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if(self->initial_client_fd != -1) {
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close(self->client_fd);
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close(self->initial_client_fd);
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self->client_fd = -1;
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self->initial_client_fd = -1;
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}
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}
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if(self->socket_fd != -1) {
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if(self->initial_socket_fd != -1) {
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close(self->socket_fd);
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close(self->initial_socket_fd);
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self->socket_fd = -1;
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self->initial_socket_fd = -1;
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}
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}
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if(self->kms_server_pid != -1) {
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if(kill_server && self->kms_server_pid != -1) {
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kill(self->kms_server_pid, SIGINT);
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kill(self->kms_server_pid, SIGINT);
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int status;
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int status;
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waitpid(self->kms_server_pid, &status, 0);
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waitpid(self->kms_server_pid, &status, 0);
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self->kms_server_pid = -1;
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self->kms_server_pid = -1;
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}
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}
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if(self->socket_path[0] != '\0') {
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if(self->initial_socket_path[0] != '\0') {
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remove(self->socket_path);
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remove(self->initial_socket_path);
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self->socket_path[0] = '\0';
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self->initial_socket_path[0] = '\0';
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}
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}
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}
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}
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int gsr_kms_client_get_kms(gsr_kms_client *self, gsr_kms_response *response) {
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void gsr_kms_client_deinit(gsr_kms_client *self) {
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response->result = KMS_RESULT_FAILED_TO_SEND;
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cleanup_initial_socket(self, true);
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strcpy(response->err_msg, "failed to send");
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for(int i = 0; i < 2; ++i) {
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if(self->socket_pair[i] > 0) {
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close(self->socket_pair[i]);
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self->socket_pair[i] = -1;
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}
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}
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}
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int gsr_kms_client_replace_connection(gsr_kms_client *self) {
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gsr_kms_response response;
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response.version = 0;
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response.result = KMS_RESULT_FAILED_TO_SEND;
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response.err_msg[0] = '\0';
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gsr_kms_request request;
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gsr_kms_request request;
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request.type = KMS_REQUEST_TYPE_GET_KMS;
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request.version = GSR_KMS_PROTOCOL_VERSION;
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if(send_msg_to_server(self->client_fd, &request) == -1) {
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request.type = KMS_REQUEST_TYPE_REPLACE_CONNECTION;
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fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to send request message to server\n");
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request.new_connection_fd = self->socket_pair[GSR_SOCKET_PAIR_REMOTE];
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if(send_msg_to_server(self->initial_client_fd, &request) == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_replace_connection: failed to send request message to server\n");
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return -1;
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return -1;
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}
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}
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const int recv_res = recv_msg_from_server(self->client_fd, response);
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const int recv_res = recv_msg_from_server(self->socket_pair[GSR_SOCKET_PAIR_LOCAL], &response);
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if(recv_res == 0) {
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if(recv_res == 0) {
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fprintf(stderr, "gsr warning: gsr_kms_client_get_kms: kms server shut down\n");
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fprintf(stderr, "gsr warning: gsr_kms_client_replace_connection: kms server shut down\n");
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return -1;
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return -1;
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} else if(recv_res == -1) {
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} else if(recv_res == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to receive response\n");
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fprintf(stderr, "gsr error: gsr_kms_client_replace_connection: failed to receive response\n");
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return -1;
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}
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if(response.version != GSR_KMS_PROTOCOL_VERSION) {
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fprintf(stderr, "gsr error: gsr_kms_client_replace_connection: expected gsr-kms-server protocol version to be %u, but it's %u\n", GSR_KMS_PROTOCOL_VERSION, response.version);
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/*close_fds(response);*/
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return -1;
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}
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return 0;
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}
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int gsr_kms_client_get_kms(gsr_kms_client *self, gsr_kms_response *response) {
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response->version = 0;
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response->result = KMS_RESULT_FAILED_TO_SEND;
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response->err_msg[0] = '\0';
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gsr_kms_request request;
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request.version = GSR_KMS_PROTOCOL_VERSION;
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request.type = KMS_REQUEST_TYPE_GET_KMS;
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request.new_connection_fd = 0;
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if(send_msg_to_server(self->socket_pair[GSR_SOCKET_PAIR_LOCAL], &request) == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to send request message to server\n");
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strcpy(response->err_msg, "failed to send");
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return -1;
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}
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const int recv_res = recv_msg_from_server(self->socket_pair[GSR_SOCKET_PAIR_LOCAL], response);
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if(recv_res == 0) {
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fprintf(stderr, "gsr warning: gsr_kms_client_get_kms: kms server shut down\n");
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strcpy(response->err_msg, "failed to receive");
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return -1;
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} else if(recv_res == -1) {
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fprintf(stderr, "gsr error: gsr_kms_client_get_kms: failed to receive response\n");
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strcpy(response->err_msg, "failed to receive");
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return -1;
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}
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if(response->version != GSR_KMS_PROTOCOL_VERSION) {
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fprintf(stderr, "gsr error: gsr_kms_client_get_kms: expected gsr-kms-server protocol version to be %u, but it's %u\n", GSR_KMS_PROTOCOL_VERSION, response->version);
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/*close_fds(response);*/
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strcpy(response->err_msg, "mismatching protocol version");
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return -1;
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return -1;
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}
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}
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@ -7,9 +7,10 @@
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typedef struct {
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typedef struct {
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pid_t kms_server_pid;
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pid_t kms_server_pid;
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int socket_fd;
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int initial_socket_fd;
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int client_fd;
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int initial_client_fd;
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char socket_path[PATH_MAX];
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char initial_socket_path[PATH_MAX];
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int socket_pair[2];
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||||||
} gsr_kms_client;
|
} gsr_kms_client;
|
||||||
|
|
||||||
/* |card_path| should be a path to card, for example /dev/dri/card0 */
|
/* |card_path| should be a path to card, for example /dev/dri/card0 */
|
||||||
|
@ -4,9 +4,11 @@
|
|||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
#include <stdbool.h>
|
#include <stdbool.h>
|
||||||
|
|
||||||
|
#define GSR_KMS_PROTOCOL_VERSION 1
|
||||||
#define GSR_KMS_MAX_PLANES 32
|
#define GSR_KMS_MAX_PLANES 32
|
||||||
|
|
||||||
typedef enum {
|
typedef enum {
|
||||||
|
KMS_REQUEST_TYPE_REPLACE_CONNECTION,
|
||||||
KMS_REQUEST_TYPE_GET_KMS
|
KMS_REQUEST_TYPE_GET_KMS
|
||||||
} gsr_kms_request_type;
|
} gsr_kms_request_type;
|
||||||
|
|
||||||
@ -19,7 +21,9 @@ typedef enum {
|
|||||||
} gsr_kms_result;
|
} gsr_kms_result;
|
||||||
|
|
||||||
typedef struct {
|
typedef struct {
|
||||||
|
uint32_t version; /* GSR_KMS_PROTOCOL_VERSION */
|
||||||
int type; /* gsr_kms_request_type */
|
int type; /* gsr_kms_request_type */
|
||||||
|
int new_connection_fd;
|
||||||
} gsr_kms_request;
|
} gsr_kms_request;
|
||||||
|
|
||||||
typedef struct {
|
typedef struct {
|
||||||
@ -40,6 +44,7 @@ typedef struct {
|
|||||||
} gsr_kms_response_fd;
|
} gsr_kms_response_fd;
|
||||||
|
|
||||||
typedef struct {
|
typedef struct {
|
||||||
|
uint32_t version; /* GSR_KMS_PROTOCOL_VERSION */
|
||||||
int result; /* gsr_kms_result */
|
int result; /* gsr_kms_result */
|
||||||
char err_msg[128];
|
char err_msg[128];
|
||||||
gsr_kms_response_fd fds[GSR_KMS_MAX_PLANES];
|
gsr_kms_response_fd fds[GSR_KMS_MAX_PLANES];
|
||||||
|
@ -408,6 +408,8 @@ int main(int argc, char **argv) {
|
|||||||
|
|
||||||
for(;;) {
|
for(;;) {
|
||||||
gsr_kms_request request;
|
gsr_kms_request request;
|
||||||
|
request.version = 0;
|
||||||
|
request.type = -1;
|
||||||
struct iovec iov;
|
struct iovec iov;
|
||||||
iov.iov_base = &request;
|
iov.iov_base = &request;
|
||||||
iov.iov_len = sizeof(request);
|
iov.iov_len = sizeof(request);
|
||||||
@ -431,9 +433,42 @@ int main(int argc, char **argv) {
|
|||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if(request.version != GSR_KMS_PROTOCOL_VERSION) {
|
||||||
|
fprintf(stderr, "kms server error: expected gpu screen recorder protocol version to be %u, but it's %u\n", GSR_KMS_PROTOCOL_VERSION, request.version);
|
||||||
|
/*
|
||||||
|
if(request.new_connection_fd > 0)
|
||||||
|
close(request.new_connection_fd);
|
||||||
|
*/
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
switch(request.type) {
|
switch(request.type) {
|
||||||
|
case KMS_REQUEST_TYPE_REPLACE_CONNECTION: {
|
||||||
|
gsr_kms_response response;
|
||||||
|
response.version = GSR_KMS_PROTOCOL_VERSION;
|
||||||
|
response.num_fds = 0;
|
||||||
|
|
||||||
|
if(request.new_connection_fd > 0) {
|
||||||
|
if(socket_fd > 0)
|
||||||
|
close(socket_fd);
|
||||||
|
socket_fd = request.new_connection_fd;
|
||||||
|
|
||||||
|
response.result = KMS_RESULT_OK;
|
||||||
|
if(send_msg_to_client(socket_fd, &response) == -1)
|
||||||
|
fprintf(stderr, "kms server error: failed to respond to client KMS_REQUEST_TYPE_REPLACE_CONNECTION request\n");
|
||||||
|
} 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)
|
||||||
|
fprintf(stderr, "kms server error: failed to respond to client request\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
case KMS_REQUEST_TYPE_GET_KMS: {
|
case KMS_REQUEST_TYPE_GET_KMS: {
|
||||||
gsr_kms_response response;
|
gsr_kms_response response;
|
||||||
|
response.version = GSR_KMS_PROTOCOL_VERSION;
|
||||||
response.num_fds = 0;
|
response.num_fds = 0;
|
||||||
|
|
||||||
if(kms_get_fb(&drm, &response, &c2crtc_map) == 0) {
|
if(kms_get_fb(&drm, &response, &c2crtc_map) == 0) {
|
||||||
@ -452,13 +487,15 @@ int main(int argc, char **argv) {
|
|||||||
}
|
}
|
||||||
default: {
|
default: {
|
||||||
gsr_kms_response response;
|
gsr_kms_response response;
|
||||||
|
response.version = GSR_KMS_PROTOCOL_VERSION;
|
||||||
response.result = KMS_RESULT_INVALID_REQUEST;
|
response.result = KMS_RESULT_INVALID_REQUEST;
|
||||||
|
response.num_fds = 0;
|
||||||
|
|
||||||
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");
|
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);
|
fprintf(stderr, "kms server error: %s\n", response.err_msg);
|
||||||
if(send_msg_to_client(socket_fd, &response) == -1) {
|
if(send_msg_to_client(socket_fd, &response) == -1)
|
||||||
fprintf(stderr, "kms server error: failed to respond to client request\n");
|
fprintf(stderr, "kms server error: failed to respond to client request\n");
|
||||||
break;
|
|
||||||
}
|
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user