| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <unistd.h> |
| 4 | #include <limits.h> |
| 5 | #include <errno.h> |
| 6 | #include <fcntl.h> |
| 7 | #include <sys/poll.h> |
| 8 | #include <sys/types.h> |
| 9 | #include <sys/stat.h> |
| 10 | #include <sys/wait.h> |
| 11 | #include <sys/mman.h> |
| 12 | #include <netinet/in.h> |
| 13 | #include <arpa/inet.h> |
| 14 | #include <netdb.h> |
| 15 | |
| 16 | #include "fio.h" |
| 17 | #include "server.h" |
| 18 | #include "crc/crc32.h" |
| 19 | #include "flist.h" |
| 20 | |
| 21 | struct fio_client { |
| 22 | struct flist_head list; |
| 23 | struct sockaddr_in addr; |
| 24 | char *hostname; |
| 25 | int fd; |
| 26 | }; |
| 27 | |
| 28 | static FLIST_HEAD(client_list); |
| 29 | static unsigned int nr_clients; |
| 30 | |
| 31 | static struct fio_client *find_client_by_fd(int fd) |
| 32 | { |
| 33 | struct fio_client *client; |
| 34 | struct flist_head *entry; |
| 35 | |
| 36 | flist_for_each(entry, &client_list) { |
| 37 | client = flist_entry(entry, struct fio_client, list); |
| 38 | |
| 39 | if (client->fd == fd) |
| 40 | return client; |
| 41 | } |
| 42 | |
| 43 | return NULL; |
| 44 | } |
| 45 | |
| 46 | static struct fio_client *find_client_by_name(const char *name) |
| 47 | { |
| 48 | struct fio_client *client; |
| 49 | struct flist_head *entry; |
| 50 | |
| 51 | flist_for_each(entry, &client_list) { |
| 52 | client = flist_entry(entry, struct fio_client, list); |
| 53 | |
| 54 | if (!strcmp(name, client->hostname)) |
| 55 | return client; |
| 56 | } |
| 57 | |
| 58 | return NULL; |
| 59 | } |
| 60 | |
| 61 | static void remove_client(struct fio_client *client) |
| 62 | { |
| 63 | printf("remove client %s\n", client->hostname); |
| 64 | flist_del(&client->list); |
| 65 | nr_clients--; |
| 66 | free(client->hostname); |
| 67 | free(client); |
| 68 | } |
| 69 | |
| 70 | int fio_client_connect(const char *host) |
| 71 | { |
| 72 | struct fio_client *client; |
| 73 | int fd; |
| 74 | |
| 75 | client = malloc(sizeof(*client)); |
| 76 | |
| 77 | memset(&client->addr, 0, sizeof(client->addr)); |
| 78 | client->addr.sin_family = AF_INET; |
| 79 | client->addr.sin_port = htons(fio_net_port); |
| 80 | |
| 81 | if (inet_aton(host, &client->addr.sin_addr) != 1) { |
| 82 | struct hostent *hent; |
| 83 | |
| 84 | hent = gethostbyname(host); |
| 85 | if (!hent) { |
| 86 | log_err("fio: gethostbyname: %s\n", strerror(errno)); |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | memcpy(&client->addr.sin_addr, hent->h_addr, 4); |
| 91 | } |
| 92 | |
| 93 | fd = socket(AF_INET, SOCK_STREAM, 0); |
| 94 | if (fd < 0) { |
| 95 | log_err("fio: socket: %s\n", strerror(errno)); |
| 96 | free(client); |
| 97 | return 1; |
| 98 | } |
| 99 | |
| 100 | if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) { |
| 101 | log_err("fio: connect: %s\n", strerror(errno)); |
| 102 | free(client); |
| 103 | return 1; |
| 104 | } |
| 105 | |
| 106 | client->hostname = strdup(host); |
| 107 | flist_add(&client->list, &client_list); |
| 108 | nr_clients++; |
| 109 | client->fd = fd; |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static int send_file_buf(struct fio_client *client, char *buf, off_t size) |
| 114 | { |
| 115 | return fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, size); |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * Send file contents to server backend. We could use sendfile(), but to remain |
| 120 | * more portable lets just read/write the darn thing. |
| 121 | */ |
| 122 | int fio_client_send_ini(const char *hostname, const char *filename) |
| 123 | { |
| 124 | struct fio_client *client; |
| 125 | struct stat sb; |
| 126 | char *p, *buf; |
| 127 | off_t len; |
| 128 | int fd, ret; |
| 129 | |
| 130 | client = find_client_by_name(hostname); |
| 131 | if (!client) { |
| 132 | log_err("fio: can't find client for host %s\n", hostname); |
| 133 | return 1; |
| 134 | } |
| 135 | |
| 136 | fd = open(filename, O_RDONLY); |
| 137 | if (fd < 0) { |
| 138 | log_err("fio: job file open: %s\n", strerror(errno)); |
| 139 | return 1; |
| 140 | } |
| 141 | |
| 142 | if (fstat(fd, &sb) < 0) { |
| 143 | log_err("fio: job file stat: %s\n", strerror(errno)); |
| 144 | return 1; |
| 145 | } |
| 146 | |
| 147 | buf = malloc(sb.st_size); |
| 148 | |
| 149 | len = sb.st_size; |
| 150 | p = buf; |
| 151 | do { |
| 152 | ret = read(fd, p, len); |
| 153 | if (ret > 0) { |
| 154 | len -= ret; |
| 155 | if (!len) |
| 156 | break; |
| 157 | p += ret; |
| 158 | continue; |
| 159 | } else if (!ret) |
| 160 | break; |
| 161 | else if (errno == EAGAIN || errno == EINTR) |
| 162 | continue; |
| 163 | } while (1); |
| 164 | |
| 165 | ret = send_file_buf(client, buf, sb.st_size); |
| 166 | free(buf); |
| 167 | return ret; |
| 168 | } |
| 169 | |
| 170 | static int handle_client(struct fio_client *client) |
| 171 | { |
| 172 | struct fio_net_cmd *cmd; |
| 173 | |
| 174 | while ((cmd = fio_net_cmd_read(client->fd)) != NULL) { |
| 175 | if (cmd->opcode == FIO_NET_CMD_ACK) { |
| 176 | free(cmd); |
| 177 | continue; |
| 178 | } |
| 179 | if (cmd->opcode == FIO_NET_CMD_QUIT) { |
| 180 | remove_client(client); |
| 181 | free(cmd); |
| 182 | break; |
| 183 | } |
| 184 | if (cmd->opcode != FIO_NET_CMD_TEXT) { |
| 185 | printf("non text: %d\n", cmd->opcode); |
| 186 | free(cmd); |
| 187 | continue; |
| 188 | } |
| 189 | fwrite(cmd->payload, cmd->pdu_len, 1, stdout); |
| 190 | fflush(stdout); |
| 191 | free(cmd); |
| 192 | } |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | int fio_handle_clients(void) |
| 198 | { |
| 199 | struct fio_client *client; |
| 200 | struct flist_head *entry; |
| 201 | struct pollfd *pfds; |
| 202 | int i = 0, ret = 0; |
| 203 | |
| 204 | pfds = malloc(nr_clients * sizeof(struct pollfd)); |
| 205 | |
| 206 | flist_for_each(entry, &client_list) { |
| 207 | client = flist_entry(entry, struct fio_client, list); |
| 208 | |
| 209 | pfds[i].fd = client->fd; |
| 210 | pfds[i].events = POLLIN; |
| 211 | i++; |
| 212 | } |
| 213 | |
| 214 | while (!exit_backend && nr_clients) { |
| 215 | ret = poll(pfds, nr_clients, 100); |
| 216 | if (ret < 0) { |
| 217 | if (errno == EINTR) |
| 218 | continue; |
| 219 | log_err("fio: poll clients: %s\n", strerror(errno)); |
| 220 | break; |
| 221 | } else if (!ret) |
| 222 | continue; |
| 223 | |
| 224 | for (i = 0; i < nr_clients; i++) { |
| 225 | if (!(pfds[i].revents & POLLIN)) |
| 226 | continue; |
| 227 | |
| 228 | client = find_client_by_fd(pfds[i].fd); |
| 229 | if (!client) { |
| 230 | log_err("fio: unknown client\n"); |
| 231 | continue; |
| 232 | } |
| 233 | handle_client(client); |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | free(pfds); |
| 238 | |
| 239 | return 0; |
| 240 | } |