| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <unistd.h> |
| #include <limits.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/poll.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/un.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <netdb.h> |
| #include <syslog.h> |
| #include <signal.h> |
| |
| #include "fio.h" |
| #include "server.h" |
| #include "crc/crc16.h" |
| #include "ieee754.h" |
| |
| #include "fio_version.h" |
| |
| int fio_net_port = 8765; |
| |
| int exit_backend = 0; |
| |
| static int server_fd = -1; |
| static char *fio_server_arg; |
| static char *bind_sock; |
| static struct sockaddr_in saddr_in; |
| |
| static const char *fio_server_ops[FIO_NET_CMD_NR] = { |
| "", |
| "QUIT", |
| "EXIT", |
| "JOB", |
| "JOBLINE", |
| "TEXT", |
| "TS", |
| "GS", |
| "SEND_ETA", |
| "ETA", |
| "PROBE", |
| "START", |
| "STOP" |
| }; |
| |
| const char *fio_server_op(unsigned int op) |
| { |
| static char buf[32]; |
| |
| if (op < FIO_NET_CMD_NR) |
| return fio_server_ops[op]; |
| |
| sprintf(buf, "UNKNOWN/%d", op); |
| return buf; |
| } |
| |
| int fio_send_data(int sk, const void *p, unsigned int len) |
| { |
| assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_PDU); |
| |
| do { |
| int ret = send(sk, p, len, 0); |
| |
| if (ret > 0) { |
| len -= ret; |
| if (!len) |
| break; |
| p += ret; |
| continue; |
| } else if (!ret) |
| break; |
| else if (errno == EAGAIN || errno == EINTR) |
| continue; |
| else |
| break; |
| } while (!exit_backend); |
| |
| if (!len) |
| return 0; |
| |
| return 1; |
| } |
| |
| int fio_recv_data(int sk, void *p, unsigned int len) |
| { |
| do { |
| int ret = recv(sk, p, len, MSG_WAITALL); |
| |
| if (ret > 0) { |
| len -= ret; |
| if (!len) |
| break; |
| p += ret; |
| continue; |
| } else if (!ret) |
| break; |
| else if (errno == EAGAIN || errno == EINTR) |
| continue; |
| else |
| break; |
| } while (!exit_backend); |
| |
| if (!len) |
| return 0; |
| |
| return -1; |
| } |
| |
| static int verify_convert_cmd(struct fio_net_cmd *cmd) |
| { |
| uint16_t crc; |
| |
| cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16); |
| cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16); |
| |
| crc = crc16(cmd, FIO_NET_CMD_CRC_SZ); |
| if (crc != cmd->cmd_crc16) { |
| log_err("fio: server bad crc on command (got %x, wanted %x)\n", |
| cmd->cmd_crc16, crc); |
| return 1; |
| } |
| |
| cmd->version = le16_to_cpu(cmd->version); |
| cmd->opcode = le16_to_cpu(cmd->opcode); |
| cmd->flags = le32_to_cpu(cmd->flags); |
| cmd->tag = le64_to_cpu(cmd->tag); |
| cmd->pdu_len = le32_to_cpu(cmd->pdu_len); |
| |
| switch (cmd->version) { |
| case FIO_SERVER_VER: |
| break; |
| default: |
| log_err("fio: bad server cmd version %d\n", cmd->version); |
| return 1; |
| } |
| |
| if (cmd->pdu_len > FIO_SERVER_MAX_PDU) { |
| log_err("fio: command payload too large: %u\n", cmd->pdu_len); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Read (and defragment, if necessary) incoming commands |
| */ |
| struct fio_net_cmd *fio_net_recv_cmd(int sk) |
| { |
| struct fio_net_cmd cmd, *cmdret = NULL; |
| size_t cmd_size = 0, pdu_offset = 0; |
| uint16_t crc; |
| int ret, first = 1; |
| void *pdu = NULL; |
| |
| do { |
| ret = fio_recv_data(sk, &cmd, sizeof(cmd)); |
| if (ret) |
| break; |
| |
| /* We have a command, verify it and swap if need be */ |
| ret = verify_convert_cmd(&cmd); |
| if (ret) |
| break; |
| |
| if (first) { |
| /* if this is text, add room for \0 at the end */ |
| cmd_size = sizeof(cmd) + cmd.pdu_len + 1; |
| assert(!cmdret); |
| } else |
| cmd_size += cmd.pdu_len; |
| |
| cmdret = realloc(cmdret, cmd_size); |
| |
| if (first) |
| memcpy(cmdret, &cmd, sizeof(cmd)); |
| else |
| assert(cmdret->opcode == cmd.opcode); |
| |
| if (!cmd.pdu_len) |
| break; |
| |
| /* There's payload, get it */ |
| pdu = (void *) cmdret->payload + pdu_offset; |
| ret = fio_recv_data(sk, pdu, cmd.pdu_len); |
| if (ret) |
| break; |
| |
| /* Verify payload crc */ |
| crc = crc16(pdu, cmd.pdu_len); |
| if (crc != cmd.pdu_crc16) { |
| log_err("fio: server bad crc on payload "); |
| log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc); |
| ret = 1; |
| break; |
| } |
| |
| pdu_offset += cmd.pdu_len; |
| if (!first) |
| cmdret->pdu_len += cmd.pdu_len; |
| first = 0; |
| } while (cmd.flags & FIO_NET_CMD_F_MORE); |
| |
| if (ret) { |
| free(cmdret); |
| cmdret = NULL; |
| } else if (cmdret) { |
| /* zero-terminate text input */ |
| if (cmdret->pdu_len && (cmdret->opcode == FIO_NET_CMD_TEXT || |
| cmdret->opcode == FIO_NET_CMD_JOB)) { |
| char *buf = (char *) cmdret->payload; |
| |
| buf[cmdret->pdu_len ] = '\0'; |
| } |
| /* frag flag is internal */ |
| cmdret->flags &= ~FIO_NET_CMD_F_MORE; |
| } |
| |
| return cmdret; |
| } |
| |
| void fio_net_cmd_crc(struct fio_net_cmd *cmd) |
| { |
| uint32_t pdu_len; |
| |
| cmd->cmd_crc16 = __cpu_to_le16(crc16(cmd, FIO_NET_CMD_CRC_SZ)); |
| |
| pdu_len = le32_to_cpu(cmd->pdu_len); |
| if (pdu_len) |
| cmd->pdu_crc16 = __cpu_to_le16(crc16(cmd->payload, pdu_len)); |
| } |
| |
| int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size, |
| uint64_t tag) |
| { |
| struct fio_net_cmd *cmd = NULL; |
| size_t this_len, cur_len = 0; |
| int ret; |
| |
| do { |
| this_len = size; |
| if (this_len > FIO_SERVER_MAX_PDU) |
| this_len = FIO_SERVER_MAX_PDU; |
| |
| if (!cmd || cur_len < sizeof(*cmd) + this_len) { |
| if (cmd) |
| free(cmd); |
| |
| cur_len = sizeof(*cmd) + this_len; |
| cmd = malloc(cur_len); |
| } |
| |
| fio_init_net_cmd(cmd, opcode, buf, this_len, tag); |
| |
| if (this_len < size) |
| cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE); |
| |
| fio_net_cmd_crc(cmd); |
| |
| ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len); |
| size -= this_len; |
| buf += this_len; |
| } while (!ret && size); |
| |
| if (cmd) |
| free(cmd); |
| |
| return ret; |
| } |
| |
| static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag) |
| { |
| struct fio_net_cmd cmd; |
| |
| fio_init_net_cmd(&cmd, opcode, NULL, 0, tag); |
| fio_net_cmd_crc(&cmd); |
| |
| return fio_send_data(sk, &cmd, sizeof(cmd)); |
| } |
| |
| /* |
| * If 'list' is non-NULL, then allocate and store the sent command for |
| * later verification. |
| */ |
| int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag, |
| struct flist_head *list) |
| { |
| struct fio_net_int_cmd *cmd; |
| int ret; |
| |
| if (!list) |
| return fio_net_send_simple_stack_cmd(sk, opcode, tag); |
| |
| cmd = malloc(sizeof(*cmd)); |
| |
| fio_init_net_cmd(&cmd->cmd, opcode, NULL, 0, (uint64_t) cmd); |
| fio_net_cmd_crc(&cmd->cmd); |
| |
| INIT_FLIST_HEAD(&cmd->list); |
| gettimeofday(&cmd->tv, NULL); |
| cmd->saved_tag = tag; |
| |
| ret = fio_send_data(sk, &cmd->cmd, sizeof(cmd->cmd)); |
| if (ret) { |
| free(cmd); |
| return ret; |
| } |
| |
| flist_add_tail(&cmd->list, list); |
| return 0; |
| } |
| |
| static int fio_server_send_quit_cmd(void) |
| { |
| dprint(FD_NET, "server: sending quit\n"); |
| return fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_QUIT, 0, NULL); |
| } |
| |
| static int handle_job_cmd(struct fio_net_cmd *cmd) |
| { |
| char *buf = (char *) cmd->payload; |
| int ret; |
| |
| if (parse_jobs_ini(buf, 1, 0)) { |
| fio_server_send_quit_cmd(); |
| return -1; |
| } |
| |
| fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL); |
| |
| ret = exec_run(); |
| fio_server_send_quit_cmd(); |
| reset_fio_state(); |
| return ret; |
| } |
| |
| static int handle_jobline_cmd(struct fio_net_cmd *cmd) |
| { |
| void *pdu = cmd->payload; |
| struct cmd_single_line_pdu *cslp; |
| struct cmd_line_pdu *clp; |
| unsigned long offset; |
| char **argv; |
| int ret, i; |
| |
| clp = pdu; |
| clp->lines = le16_to_cpu(clp->lines); |
| argv = malloc(clp->lines * sizeof(char *)); |
| offset = sizeof(*clp); |
| |
| dprint(FD_NET, "server: %d command line args\n", clp->lines); |
| |
| for (i = 0; i < clp->lines; i++) { |
| cslp = pdu + offset; |
| argv[i] = (char *) cslp->text; |
| |
| offset += sizeof(*cslp) + le16_to_cpu(cslp->len); |
| dprint(FD_NET, "server: %d: %s\n", i, argv[i]); |
| } |
| |
| if (parse_cmd_line(clp->lines, argv)) { |
| fio_server_send_quit_cmd(); |
| free(argv); |
| return -1; |
| } |
| |
| free(argv); |
| |
| fio_net_send_simple_cmd(server_fd, FIO_NET_CMD_START, 0, NULL); |
| |
| ret = exec_run(); |
| fio_server_send_quit_cmd(); |
| reset_fio_state(); |
| return ret; |
| } |
| |
| static int handle_probe_cmd(struct fio_net_cmd *cmd) |
| { |
| struct cmd_probe_pdu probe; |
| |
| dprint(FD_NET, "server: sending probe reply\n"); |
| |
| memset(&probe, 0, sizeof(probe)); |
| gethostname((char *) probe.hostname, sizeof(probe.hostname)); |
| #ifdef FIO_BIG_ENDIAN |
| probe.bigendian = 1; |
| #endif |
| probe.fio_major = FIO_MAJOR; |
| probe.fio_minor = FIO_MINOR; |
| probe.fio_patch = FIO_PATCH; |
| |
| probe.os = FIO_OS; |
| probe.arch = FIO_ARCH; |
| |
| return fio_net_send_cmd(server_fd, FIO_NET_CMD_PROBE, &probe, sizeof(probe), cmd->tag); |
| } |
| |
| static int handle_send_eta_cmd(struct fio_net_cmd *cmd) |
| { |
| struct jobs_eta *je; |
| size_t size; |
| int i; |
| |
| size = sizeof(*je) + thread_number * sizeof(char); |
| je = malloc(size); |
| memset(je, 0, size); |
| |
| if (!calc_thread_status(je, 1)) { |
| free(je); |
| return 0; |
| } |
| |
| dprint(FD_NET, "server sending status\n"); |
| |
| je->nr_running = cpu_to_le32(je->nr_running); |
| je->nr_ramp = cpu_to_le32(je->nr_ramp); |
| je->nr_pending = cpu_to_le32(je->nr_pending); |
| je->files_open = cpu_to_le32(je->files_open); |
| je->m_rate = cpu_to_le32(je->m_rate); |
| je->t_rate = cpu_to_le32(je->t_rate); |
| je->m_iops = cpu_to_le32(je->m_iops); |
| je->t_iops = cpu_to_le32(je->t_iops); |
| |
| for (i = 0; i < 2; i++) { |
| je->rate[i] = cpu_to_le32(je->rate[i]); |
| je->iops[i] = cpu_to_le32(je->iops[i]); |
| } |
| |
| je->elapsed_sec = cpu_to_le32(je->nr_running); |
| je->eta_sec = cpu_to_le64(je->eta_sec); |
| |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_ETA, je, size, cmd->tag); |
| free(je); |
| return 0; |
| } |
| |
| static int handle_command(struct fio_net_cmd *cmd) |
| { |
| int ret; |
| |
| dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%lx\n", |
| fio_server_op(cmd->opcode), cmd->pdu_len, cmd->tag); |
| |
| switch (cmd->opcode) { |
| case FIO_NET_CMD_QUIT: |
| fio_terminate_threads(TERMINATE_ALL); |
| return -1; |
| case FIO_NET_CMD_EXIT: |
| exit_backend = 1; |
| return -1; |
| case FIO_NET_CMD_JOB: |
| ret = handle_job_cmd(cmd); |
| break; |
| case FIO_NET_CMD_JOBLINE: |
| ret = handle_jobline_cmd(cmd); |
| break; |
| case FIO_NET_CMD_PROBE: |
| ret = handle_probe_cmd(cmd); |
| break; |
| case FIO_NET_CMD_SEND_ETA: |
| ret = handle_send_eta_cmd(cmd); |
| break; |
| default: |
| log_err("fio: unknown opcode: %s\n",fio_server_op(cmd->opcode)); |
| ret = 1; |
| } |
| |
| return ret; |
| } |
| |
| static int handle_connection(int sk, int block) |
| { |
| struct fio_net_cmd *cmd = NULL; |
| int ret = 0; |
| |
| /* read forever */ |
| while (!exit_backend) { |
| struct pollfd pfd = { |
| .fd = sk, |
| .events = POLLIN, |
| }; |
| |
| ret = 0; |
| do { |
| ret = poll(&pfd, 1, 100); |
| if (ret < 0) { |
| if (errno == EINTR) |
| break; |
| log_err("fio: poll: %s\n", strerror(errno)); |
| break; |
| } else if (!ret) { |
| if (!block) |
| return 0; |
| continue; |
| } |
| |
| if (pfd.revents & POLLIN) |
| break; |
| if (pfd.revents & (POLLERR|POLLHUP)) { |
| ret = 1; |
| break; |
| } |
| } while (!exit_backend); |
| |
| if (ret < 0) |
| break; |
| |
| cmd = fio_net_recv_cmd(sk); |
| if (!cmd) { |
| ret = -1; |
| break; |
| } |
| |
| ret = handle_command(cmd); |
| if (ret) |
| break; |
| |
| free(cmd); |
| cmd = NULL; |
| } |
| |
| if (cmd) |
| free(cmd); |
| |
| return ret; |
| } |
| |
| void fio_server_idle_loop(void) |
| { |
| if (server_fd != -1) |
| handle_connection(server_fd, 0); |
| } |
| |
| static int accept_loop(int listen_sk) |
| { |
| struct sockaddr_in addr; |
| fio_socklen_t len = sizeof(addr); |
| struct pollfd pfd; |
| int ret, sk, flags, exitval = 0; |
| |
| dprint(FD_NET, "server enter accept loop\n"); |
| |
| flags = fcntl(listen_sk, F_GETFL); |
| flags |= O_NONBLOCK; |
| fcntl(listen_sk, F_SETFL, flags); |
| again: |
| pfd.fd = listen_sk; |
| pfd.events = POLLIN; |
| do { |
| ret = poll(&pfd, 1, 100); |
| if (ret < 0) { |
| if (errno == EINTR) |
| break; |
| log_err("fio: poll: %s\n", strerror(errno)); |
| goto out; |
| } else if (!ret) |
| continue; |
| |
| if (pfd.revents & POLLIN) |
| break; |
| } while (!exit_backend); |
| |
| if (exit_backend) |
| goto out; |
| |
| sk = accept(listen_sk, (struct sockaddr *) &addr, &len); |
| if (sk < 0) { |
| log_err("fio: accept: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| dprint(FD_NET, "server: connect from %s\n", inet_ntoa(addr.sin_addr)); |
| |
| server_fd = sk; |
| |
| exitval = handle_connection(sk, 1); |
| |
| server_fd = -1; |
| close(sk); |
| |
| if (!exit_backend) |
| goto again; |
| |
| out: |
| return exitval; |
| } |
| |
| int fio_server_text_output(const char *buf, size_t len) |
| { |
| if (server_fd != -1) |
| return fio_net_send_cmd(server_fd, FIO_NET_CMD_TEXT, buf, len, 0); |
| |
| return log_local_buf(buf, len); |
| } |
| |
| static void convert_io_stat(struct io_stat *dst, struct io_stat *src) |
| { |
| dst->max_val = cpu_to_le64(src->max_val); |
| dst->min_val = cpu_to_le64(src->min_val); |
| dst->samples = cpu_to_le64(src->samples); |
| |
| /* |
| * Encode to IEEE 754 for network transfer |
| */ |
| dst->mean.u.i = __cpu_to_le64(fio_double_to_uint64(src->mean.u.f)); |
| dst->S.u.i = __cpu_to_le64(fio_double_to_uint64(src->S.u.f)); |
| } |
| |
| static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) |
| { |
| int i; |
| |
| for (i = 0; i < 2; i++) { |
| dst->max_run[i] = cpu_to_le64(src->max_run[i]); |
| dst->min_run[i] = cpu_to_le64(src->min_run[i]); |
| dst->max_bw[i] = cpu_to_le64(src->max_bw[i]); |
| dst->min_bw[i] = cpu_to_le64(src->min_bw[i]); |
| dst->io_kb[i] = cpu_to_le64(src->io_kb[i]); |
| dst->agg[i] = cpu_to_le64(src->agg[i]); |
| } |
| |
| dst->kb_base = cpu_to_le32(src->kb_base); |
| dst->groupid = cpu_to_le32(src->groupid); |
| } |
| |
| /* |
| * Send a CMD_TS, which packs struct thread_stat and group_run_stats |
| * into a single payload. |
| */ |
| void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs) |
| { |
| struct cmd_ts_pdu p; |
| int i, j; |
| |
| dprint(FD_NET, "server sending end stats\n"); |
| |
| memset(&p, 0, sizeof(p)); |
| |
| strcpy(p.ts.name, ts->name); |
| strcpy(p.ts.verror, ts->verror); |
| strcpy(p.ts.description, ts->description); |
| |
| p.ts.error = cpu_to_le32(ts->error); |
| p.ts.groupid = cpu_to_le32(ts->groupid); |
| p.ts.pid = cpu_to_le32(ts->pid); |
| p.ts.members = cpu_to_le32(ts->members); |
| |
| for (i = 0; i < 2; i++) { |
| convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]); |
| convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]); |
| convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]); |
| convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]); |
| } |
| |
| p.ts.usr_time = cpu_to_le64(ts->usr_time); |
| p.ts.sys_time = cpu_to_le64(ts->sys_time); |
| p.ts.ctx = cpu_to_le64(ts->ctx); |
| p.ts.minf = cpu_to_le64(ts->minf); |
| p.ts.majf = cpu_to_le64(ts->majf); |
| p.ts.clat_percentiles = cpu_to_le64(ts->clat_percentiles); |
| |
| for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { |
| fio_fp64_t *fp = &p.ts.percentile_list[i]; |
| |
| fp->u.i = __cpu_to_le64(fio_double_to_uint64(fp->u.f)); |
| } |
| |
| for (i = 0; i < FIO_IO_U_MAP_NR; i++) { |
| p.ts.io_u_map[i] = cpu_to_le32(ts->io_u_map[i]); |
| p.ts.io_u_submit[i] = cpu_to_le32(ts->io_u_submit[i]); |
| p.ts.io_u_complete[i] = cpu_to_le32(ts->io_u_complete[i]); |
| } |
| |
| for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { |
| p.ts.io_u_lat_u[i] = cpu_to_le32(ts->io_u_lat_u[i]); |
| p.ts.io_u_lat_m[i] = cpu_to_le32(ts->io_u_lat_m[i]); |
| } |
| |
| for (i = 0; i < 2; i++) |
| for (j = 0; j < FIO_IO_U_PLAT_NR; j++) |
| p.ts.io_u_plat[i][j] = cpu_to_le32(ts->io_u_plat[i][j]); |
| |
| for (i = 0; i < 3; i++) { |
| p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]); |
| p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]); |
| } |
| |
| p.ts.total_submit = cpu_to_le64(ts->total_submit); |
| p.ts.total_complete = cpu_to_le64(ts->total_complete); |
| |
| for (i = 0; i < 2; i++) { |
| p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]); |
| p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]); |
| } |
| |
| p.ts.total_run_time = cpu_to_le64(ts->total_run_time); |
| p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error); |
| p.ts.total_err_count = cpu_to_le64(ts->total_err_count); |
| p.ts.first_error = cpu_to_le32(ts->first_error); |
| p.ts.kb_base = cpu_to_le32(ts->kb_base); |
| |
| convert_gs(&p.rs, rs); |
| |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_TS, &p, sizeof(p), 0); |
| } |
| |
| void fio_server_send_gs(struct group_run_stats *rs) |
| { |
| struct group_run_stats gs; |
| |
| dprint(FD_NET, "server sending group run stats\n"); |
| |
| convert_gs(&gs, rs); |
| fio_net_send_cmd(server_fd, FIO_NET_CMD_GS, &gs, sizeof(gs), 0); |
| } |
| |
| int fio_server_log(const char *format, ...) |
| { |
| char buffer[1024]; |
| va_list args; |
| size_t len; |
| |
| dprint(FD_NET, "server log\n"); |
| |
| va_start(args, format); |
| len = vsnprintf(buffer, sizeof(buffer), format, args); |
| va_end(args); |
| |
| return fio_server_text_output(buffer, len); |
| } |
| |
| static int fio_init_server_ip(void) |
| { |
| int sk, opt; |
| |
| sk = socket(AF_INET, SOCK_STREAM, 0); |
| if (sk < 0) { |
| log_err("fio: socket: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| opt = 1; |
| if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { |
| log_err("fio: setsockopt: %s\n", strerror(errno)); |
| close(sk); |
| return -1; |
| } |
| #ifdef SO_REUSEPORT |
| if (setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt)) < 0) { |
| log_err("fio: setsockopt: %s\n", strerror(errno)); |
| close(sk); |
| return -1; |
| } |
| #endif |
| |
| saddr_in.sin_family = AF_INET; |
| |
| if (bind(sk, (struct sockaddr *) &saddr_in, sizeof(saddr_in)) < 0) { |
| log_err("fio: bind: %s\n", strerror(errno)); |
| close(sk); |
| return -1; |
| } |
| |
| return sk; |
| } |
| |
| static int fio_init_server_sock(void) |
| { |
| struct sockaddr_un addr; |
| fio_socklen_t len; |
| mode_t mode; |
| int sk; |
| |
| sk = socket(AF_UNIX, SOCK_STREAM, 0); |
| if (sk < 0) { |
| log_err("fio: socket: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| mode = umask(000); |
| |
| memset(&addr, 0, sizeof(addr)); |
| addr.sun_family = AF_UNIX; |
| strcpy(addr.sun_path, bind_sock); |
| unlink(bind_sock); |
| |
| len = sizeof(addr.sun_family) + strlen(bind_sock) + 1; |
| |
| if (bind(sk, (struct sockaddr *) &addr, len) < 0) { |
| log_err("fio: bind: %s\n", strerror(errno)); |
| close(sk); |
| return -1; |
| } |
| |
| umask(mode); |
| return sk; |
| } |
| |
| static int fio_init_server_connection(void) |
| { |
| char bind_str[128]; |
| int sk; |
| |
| dprint(FD_NET, "starting server\n"); |
| |
| if (!bind_sock) |
| sk = fio_init_server_ip(); |
| else |
| sk = fio_init_server_sock(); |
| |
| if (sk < 0) |
| return sk; |
| |
| if (!bind_sock) |
| sprintf(bind_str, "%s:%u", inet_ntoa(saddr_in.sin_addr), fio_net_port); |
| else |
| strcpy(bind_str, bind_sock); |
| |
| log_info("fio: server listening on %s\n", bind_str); |
| |
| if (listen(sk, 0) < 0) { |
| log_err("fio: listen: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| return sk; |
| } |
| |
| int fio_server_parse_string(const char *str, char **ptr, int *is_sock, |
| int *port, struct in_addr *inp) |
| { |
| *ptr = NULL; |
| *is_sock = 0; |
| *port = fio_net_port; |
| |
| if (!strncmp(str, "sock:", 5)) { |
| *ptr = strdup(str + 5); |
| *is_sock = 1; |
| } else { |
| const char *host = str; |
| char *portp; |
| int lport = 0; |
| |
| /* |
| * Is it ip:<ip or host>:port |
| */ |
| if (!strncmp(host, "ip:", 3)) |
| host += 3; |
| else if (host[0] == ':') { |
| /* String is :port */ |
| host++; |
| lport = atoi(host); |
| if (!lport || lport > 65535) { |
| log_err("fio: bad server port %u\n", port); |
| return 1; |
| } |
| /* no hostname given, we are done */ |
| *port = lport; |
| return 0; |
| } |
| |
| /* |
| * If no port seen yet, check if there's a last ':' at the end |
| */ |
| if (!lport) { |
| portp = strchr(host, ':'); |
| if (portp) { |
| *portp = '\0'; |
| portp++; |
| lport = atoi(portp); |
| if (!lport || lport > 65535) { |
| log_err("fio: bad server port %u\n", port); |
| return 1; |
| } |
| } |
| } |
| |
| if (lport) |
| *port = lport; |
| |
| *ptr = strdup(host); |
| |
| if (inet_aton(host, inp) != 1) { |
| struct hostent *hent; |
| |
| hent = gethostbyname(host); |
| if (!hent) { |
| free(*ptr); |
| *ptr = NULL; |
| return 1; |
| } |
| |
| memcpy(inp, hent->h_addr, 4); |
| } |
| } |
| |
| if (*port == 0) |
| *port = fio_net_port; |
| |
| return 0; |
| } |
| |
| /* |
| * Server arg should be one of: |
| * |
| * sock:/path/to/socket |
| * ip:1.2.3.4 |
| * 1.2.3.4 |
| * |
| * Where sock uses unix domain sockets, and ip binds the server to |
| * a specific interface. If no arguments are given to the server, it |
| * uses IP and binds to 0.0.0.0. |
| * |
| */ |
| static int fio_handle_server_arg(void) |
| { |
| int port = fio_net_port; |
| int is_sock, ret = 0; |
| |
| saddr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
| |
| if (!fio_server_arg) |
| goto out; |
| |
| ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock, |
| &port, &saddr_in.sin_addr); |
| |
| if (!is_sock && bind_sock) { |
| free(bind_sock); |
| bind_sock = NULL; |
| } |
| |
| out: |
| fio_net_port = port; |
| saddr_in.sin_port = htons(port); |
| return ret; |
| } |
| |
| static int fio_server(void) |
| { |
| int sk, ret; |
| |
| dprint(FD_NET, "starting server\n"); |
| |
| if (fio_handle_server_arg()) |
| return -1; |
| |
| sk = fio_init_server_connection(); |
| if (sk < 0) |
| return -1; |
| |
| ret = accept_loop(sk); |
| |
| close(sk); |
| |
| if (fio_server_arg) { |
| free(fio_server_arg); |
| fio_server_arg = NULL; |
| } |
| if (bind_sock) |
| free(bind_sock); |
| |
| return ret; |
| } |
| |
| void fio_server_got_signal(int signal) |
| { |
| if (signal == SIGPIPE) |
| server_fd = -1; |
| else { |
| log_info("\nfio: terminating on signal %d\n", signal); |
| exit_backend = 1; |
| } |
| } |
| |
| static int check_existing_pidfile(const char *pidfile) |
| { |
| struct stat sb; |
| char buf[16]; |
| pid_t pid; |
| FILE *f; |
| |
| if (stat(pidfile, &sb)) |
| return 0; |
| |
| f = fopen(pidfile, "r"); |
| if (!f) |
| return 0; |
| |
| if (fread(buf, sb.st_size, 1, f) <= 0) { |
| fclose(f); |
| return 1; |
| } |
| fclose(f); |
| |
| pid = atoi(buf); |
| if (kill(pid, SIGCONT) < 0) |
| return errno != ESRCH; |
| |
| return 1; |
| } |
| |
| static int write_pid(pid_t pid, const char *pidfile) |
| { |
| FILE *fpid; |
| |
| fpid = fopen(pidfile, "w"); |
| if (!fpid) { |
| log_err("fio: failed opening pid file %s\n", pidfile); |
| return 1; |
| } |
| |
| fprintf(fpid, "%u\n", (unsigned int) pid); |
| fclose(fpid); |
| return 0; |
| } |
| |
| /* |
| * If pidfile is specified, background us. |
| */ |
| int fio_start_server(char *pidfile) |
| { |
| pid_t pid; |
| int ret; |
| |
| if (!pidfile) |
| return fio_server(); |
| |
| if (check_existing_pidfile(pidfile)) { |
| log_err("fio: pidfile %s exists and server appears alive\n", |
| pidfile); |
| return -1; |
| } |
| |
| pid = fork(); |
| if (pid < 0) { |
| log_err("fio: failed server fork: %s", strerror(errno)); |
| free(pidfile); |
| return -1; |
| } else if (pid) { |
| int ret = write_pid(pid, pidfile); |
| |
| exit(ret); |
| } |
| |
| setsid(); |
| openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER); |
| log_syslog = 1; |
| close(STDIN_FILENO); |
| close(STDOUT_FILENO); |
| close(STDERR_FILENO); |
| f_out = NULL; |
| f_err = NULL; |
| |
| ret = fio_server(); |
| |
| closelog(); |
| unlink(pidfile); |
| free(pidfile); |
| return ret; |
| } |
| |
| void fio_server_set_arg(const char *arg) |
| { |
| fio_server_arg = strdup(arg); |
| } |