diff options
Diffstat (limited to 'qemu/contrib/ivshmem-server/main.c')
-rw-r--r-- | qemu/contrib/ivshmem-server/main.c | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/qemu/contrib/ivshmem-server/main.c b/qemu/contrib/ivshmem-server/main.c deleted file mode 100644 index 45776d8af..000000000 --- a/qemu/contrib/ivshmem-server/main.c +++ /dev/null @@ -1,273 +0,0 @@ -/* - * Copyright 6WIND S.A., 2014 - * - * This work is licensed under the terms of the GNU GPL, version 2 or - * (at your option) any later version. See the COPYING file in the - * top-level directory. - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qemu/cutils.h" - -#include "ivshmem-server.h" - -#define IVSHMEM_SERVER_DEFAULT_VERBOSE 0 -#define IVSHMEM_SERVER_DEFAULT_FOREGROUND 0 -#define IVSHMEM_SERVER_DEFAULT_PID_FILE "/var/run/ivshmem-server.pid" -#define IVSHMEM_SERVER_DEFAULT_UNIX_SOCK_PATH "/tmp/ivshmem_socket" -#define IVSHMEM_SERVER_DEFAULT_SHM_PATH "ivshmem" -#define IVSHMEM_SERVER_DEFAULT_SHM_SIZE (4*1024*1024) -#define IVSHMEM_SERVER_DEFAULT_N_VECTORS 1 - -/* used to quit on signal SIGTERM */ -static int ivshmem_server_quit; - -/* arguments given by the user */ -typedef struct IvshmemServerArgs { - bool verbose; - bool foreground; - const char *pid_file; - const char *unix_socket_path; - const char *shm_path; - bool use_shm_open; - uint64_t shm_size; - unsigned n_vectors; -} IvshmemServerArgs; - -static void -ivshmem_server_usage(const char *progname) -{ - printf("Usage: %s [OPTION]...\n" - " -h: show this help\n" - " -v: verbose mode\n" - " -F: foreground mode (default is to daemonize)\n" - " -p <pid-file>: path to the PID file (used in daemon mode only)\n" - " default " IVSHMEM_SERVER_DEFAULT_PID_FILE "\n" - " -S <unix-socket-path>: path to the unix socket to listen to\n" - " default " IVSHMEM_SERVER_DEFAULT_UNIX_SOCK_PATH "\n" - " -M <shm-name>: POSIX shared memory object to use\n" - " default " IVSHMEM_SERVER_DEFAULT_SHM_PATH "\n" - " -m <dir-name>: where to create shared memory\n" - " -l <size>: size of shared memory in bytes\n" - " suffixes K, M and G can be used, e.g. 1K means 1024\n" - " default %u\n" - " -n <nvectors>: number of vectors\n" - " default %u\n", - progname, IVSHMEM_SERVER_DEFAULT_SHM_SIZE, - IVSHMEM_SERVER_DEFAULT_N_VECTORS); -} - -static void -ivshmem_server_help(const char *progname) -{ - fprintf(stderr, "Try '%s -h' for more information.\n", progname); -} - -/* parse the program arguments, exit on error */ -static void -ivshmem_server_parse_args(IvshmemServerArgs *args, int argc, char *argv[]) -{ - int c; - unsigned long long v; - Error *err = NULL; - - while ((c = getopt(argc, argv, "hvFp:S:m:M:l:n:")) != -1) { - - switch (c) { - case 'h': /* help */ - ivshmem_server_usage(argv[0]); - exit(0); - break; - - case 'v': /* verbose */ - args->verbose = 1; - break; - - case 'F': /* foreground */ - args->foreground = 1; - break; - - case 'p': /* pid file */ - args->pid_file = optarg; - break; - - case 'S': /* unix socket path */ - args->unix_socket_path = optarg; - break; - - case 'M': /* shm name */ - case 'm': /* dir name */ - args->shm_path = optarg; - args->use_shm_open = c == 'M'; - break; - - case 'l': /* shm size */ - parse_option_size("shm_size", optarg, &args->shm_size, &err); - if (err) { - error_report_err(err); - ivshmem_server_help(argv[0]); - exit(1); - } - break; - - case 'n': /* number of vectors */ - if (parse_uint_full(optarg, &v, 0) < 0) { - fprintf(stderr, "cannot parse n_vectors\n"); - ivshmem_server_help(argv[0]); - exit(1); - } - args->n_vectors = v; - break; - - default: - ivshmem_server_usage(argv[0]); - exit(1); - break; - } - } - - if (args->n_vectors > IVSHMEM_SERVER_MAX_VECTORS) { - fprintf(stderr, "too many requested vectors (max is %d)\n", - IVSHMEM_SERVER_MAX_VECTORS); - ivshmem_server_help(argv[0]); - exit(1); - } - - if (args->verbose == 1 && args->foreground == 0) { - fprintf(stderr, "cannot use verbose in daemon mode\n"); - ivshmem_server_help(argv[0]); - exit(1); - } -} - -/* wait for events on listening server unix socket and connected client - * sockets */ -static int -ivshmem_server_poll_events(IvshmemServer *server) -{ - fd_set fds; - int ret = 0, maxfd; - - while (!ivshmem_server_quit) { - - FD_ZERO(&fds); - maxfd = 0; - ivshmem_server_get_fds(server, &fds, &maxfd); - - ret = select(maxfd, &fds, NULL, NULL, NULL); - - if (ret < 0) { - if (errno == EINTR) { - continue; - } - - fprintf(stderr, "select error: %s\n", strerror(errno)); - break; - } - if (ret == 0) { - continue; - } - - if (ivshmem_server_handle_fds(server, &fds, maxfd) < 0) { - fprintf(stderr, "ivshmem_server_handle_fds() failed\n"); - break; - } - } - - return ret; -} - -static void -ivshmem_server_quit_cb(int signum) -{ - ivshmem_server_quit = 1; -} - -int -main(int argc, char *argv[]) -{ - IvshmemServer server; - struct sigaction sa, sa_quit; - IvshmemServerArgs args = { - .verbose = IVSHMEM_SERVER_DEFAULT_VERBOSE, - .foreground = IVSHMEM_SERVER_DEFAULT_FOREGROUND, - .pid_file = IVSHMEM_SERVER_DEFAULT_PID_FILE, - .unix_socket_path = IVSHMEM_SERVER_DEFAULT_UNIX_SOCK_PATH, - .shm_path = IVSHMEM_SERVER_DEFAULT_SHM_PATH, - .use_shm_open = true, - .shm_size = IVSHMEM_SERVER_DEFAULT_SHM_SIZE, - .n_vectors = IVSHMEM_SERVER_DEFAULT_N_VECTORS, - }; - int ret = 1; - - /* - * Do not remove this notice without adding proper error handling! - * Start with handling ivshmem_server_send_one_msg() failure. - */ - printf("*** Example code, do not use in production ***\n"); - - /* parse arguments, will exit on error */ - ivshmem_server_parse_args(&args, argc, argv); - - /* Ignore SIGPIPE, see this link for more info: - * http://www.mail-archive.com/libevent-users@monkey.org/msg01606.html */ - sa.sa_handler = SIG_IGN; - sa.sa_flags = 0; - if (sigemptyset(&sa.sa_mask) == -1 || - sigaction(SIGPIPE, &sa, 0) == -1) { - perror("failed to ignore SIGPIPE; sigaction"); - goto err; - } - - sa_quit.sa_handler = ivshmem_server_quit_cb; - sa_quit.sa_flags = 0; - if (sigemptyset(&sa_quit.sa_mask) == -1 || - sigaction(SIGTERM, &sa_quit, 0) == -1) { - perror("failed to add SIGTERM handler; sigaction"); - goto err; - } - - /* init the ivshms structure */ - if (ivshmem_server_init(&server, args.unix_socket_path, - args.shm_path, args.use_shm_open, - args.shm_size, args.n_vectors, args.verbose) < 0) { - fprintf(stderr, "cannot init server\n"); - goto err; - } - - /* start the ivshmem server (open shm & unix socket) */ - if (ivshmem_server_start(&server) < 0) { - fprintf(stderr, "cannot bind\n"); - goto err; - } - - /* daemonize if asked to */ - if (!args.foreground) { - FILE *fp; - - if (qemu_daemon(1, 1) < 0) { - fprintf(stderr, "cannot daemonize: %s\n", strerror(errno)); - goto err_close; - } - - /* write pid file */ - fp = fopen(args.pid_file, "w"); - if (fp == NULL) { - fprintf(stderr, "cannot write pid file: %s\n", strerror(errno)); - goto err_close; - } - - fprintf(fp, "%d\n", (int) getpid()); - fclose(fp); - } - - ivshmem_server_poll_events(&server); - fprintf(stdout, "server disconnected\n"); - ret = 0; - -err_close: - ivshmem_server_close(&server); -err: - return ret; -} |