| 1 | /* |
| 2 | * text-to-ctf.c |
| 3 | * |
| 4 | * BabelTrace - Convert Text to CTF |
| 5 | * |
| 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 9 | * of this software and associated documentation files (the "Software"), to deal |
| 10 | * in the Software without restriction, including without limitation the rights |
| 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 12 | * copies of the Software, and to permit persons to whom the Software is |
| 13 | * furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * Depends on glibc 2.10 for getline(). |
| 19 | */ |
| 20 | |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <sys/mman.h> |
| 25 | #include <dirent.h> |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <stdint.h> |
| 29 | #include <unistd.h> |
| 30 | #include <errno.h> |
| 31 | #include <uuid/uuid.h> |
| 32 | #include <string.h> |
| 33 | #include <endian.h> |
| 34 | |
| 35 | #include <babeltrace/babeltrace.h> |
| 36 | #include <babeltrace/ctf/types.h> |
| 37 | |
| 38 | static const char metadata[] = |
| 39 | "typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n" |
| 40 | "typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n" |
| 41 | "\n" |
| 42 | "trace {\n" |
| 43 | " major = %s;\n" /* major (e.g. 0) */ |
| 44 | " minor = %s;\n" /* minor (e.g. 1) */ |
| 45 | " uuid = %s;\n" /* UUID */ |
| 46 | " byte_order = %s;\n" /* be or le */ |
| 47 | " packet.header := struct {\n" |
| 48 | " uint32_t magic;\n" |
| 49 | " uint8_t trace_uuid[16];\n" |
| 50 | " };\n" |
| 51 | "};\n" |
| 52 | "\n" |
| 53 | "stream {\n" |
| 54 | " packet.context := struct {\n" |
| 55 | " uint32_t content_size;\n" |
| 56 | " uint32_t packet_size;\n" |
| 57 | " };\n" |
| 58 | "};\n" |
| 59 | "\n" |
| 60 | "event {\n" |
| 61 | " name = string;\n" |
| 62 | " fields := struct { string str; };\n" |
| 63 | "};\n"; |
| 64 | |
| 65 | int babeltrace_debug, babeltrace_verbose; |
| 66 | |
| 67 | static uuid_t s_uuid; |
| 68 | |
| 69 | static |
| 70 | void write_packet_header(struct ctf_stream_pos *pos, uuid_t uuid) |
| 71 | { |
| 72 | struct ctf_stream_pos dummy; |
| 73 | |
| 74 | /* magic */ |
| 75 | ctf_dummy_pos(pos, &dummy); |
| 76 | ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 77 | ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 78 | assert(!ctf_pos_packet(&dummy)); |
| 79 | |
| 80 | ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 81 | *(uint32_t *) ctf_get_pos_addr(pos) = 0xC1FC1FC1; |
| 82 | ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 83 | |
| 84 | /* trace_uuid */ |
| 85 | ctf_dummy_pos(pos, &dummy); |
| 86 | ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT); |
| 87 | ctf_move_pos(&dummy, 16 * CHAR_BIT); |
| 88 | assert(!ctf_pos_packet(&dummy)); |
| 89 | |
| 90 | ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT); |
| 91 | memcpy(ctf_get_pos_addr(pos), uuid, 16); |
| 92 | ctf_move_pos(pos, 16 * CHAR_BIT); |
| 93 | } |
| 94 | |
| 95 | static |
| 96 | void write_packet_context(struct ctf_stream_pos *pos) |
| 97 | { |
| 98 | struct ctf_stream_pos dummy; |
| 99 | |
| 100 | /* content_size */ |
| 101 | ctf_dummy_pos(pos, &dummy); |
| 102 | ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 103 | ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 104 | assert(!ctf_pos_packet(&dummy)); |
| 105 | |
| 106 | ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 107 | *(uint32_t *) ctf_get_pos_addr(pos) = -1U; /* Not known yet */ |
| 108 | pos->content_size_loc = (uint32_t *) ctf_get_pos_addr(pos); |
| 109 | ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 110 | |
| 111 | /* packet_size */ |
| 112 | ctf_dummy_pos(pos, &dummy); |
| 113 | ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 114 | ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT); |
| 115 | assert(!ctf_pos_packet(&dummy)); |
| 116 | |
| 117 | ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 118 | *(uint32_t *) ctf_get_pos_addr(pos) = pos->packet_size; |
| 119 | ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT); |
| 120 | } |
| 121 | |
| 122 | static |
| 123 | void trace_string(char *line, struct ctf_stream_pos *pos, size_t len) |
| 124 | { |
| 125 | struct ctf_stream_pos dummy; |
| 126 | int attempt = 0; |
| 127 | |
| 128 | printf_debug("read: %s\n", line); |
| 129 | retry: |
| 130 | ctf_dummy_pos(pos, &dummy); |
| 131 | ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT); |
| 132 | ctf_move_pos(&dummy, len * CHAR_BIT); |
| 133 | if (ctf_pos_packet(&dummy)) { |
| 134 | /* TODO write content size */ |
| 135 | ctf_pos_pad_packet(pos); |
| 136 | write_packet_header(pos, s_uuid); |
| 137 | write_packet_context(pos); |
| 138 | if (attempt++ == 1) { |
| 139 | fprintf(stdout, "[Error] Line too large for packet size (%zukB) (discarded)\n", |
| 140 | pos->packet_size / CHAR_BIT / 1024); |
| 141 | return; |
| 142 | } |
| 143 | goto retry; |
| 144 | } |
| 145 | |
| 146 | ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT); |
| 147 | memcpy(ctf_get_pos_addr(pos), line, len); |
| 148 | ctf_move_pos(pos, len * CHAR_BIT); |
| 149 | } |
| 150 | |
| 151 | static |
| 152 | void trace_text(FILE *input, int output) |
| 153 | { |
| 154 | struct ctf_stream_pos pos; |
| 155 | ssize_t len; |
| 156 | char *line = NULL, *nl; |
| 157 | size_t linesize; |
| 158 | |
| 159 | ctf_init_pos(&pos, output, O_RDWR); |
| 160 | |
| 161 | write_packet_header(&pos, s_uuid); |
| 162 | write_packet_context(&pos); |
| 163 | for (;;) { |
| 164 | len = getline(&line, &linesize, input); |
| 165 | if (len < 0) |
| 166 | break; |
| 167 | nl = strrchr(line, '\n'); |
| 168 | if (nl) |
| 169 | *nl = '\0'; |
| 170 | trace_string(line, &pos, nl - line + 1); |
| 171 | } |
| 172 | ctf_fini_pos(&pos); |
| 173 | } |
| 174 | |
| 175 | static void usage(FILE *fp) |
| 176 | { |
| 177 | fprintf(fp, "BabelTrace Log Converter %u.%u\n", |
| 178 | BABELTRACE_VERSION_MAJOR, |
| 179 | BABELTRACE_VERSION_MINOR); |
| 180 | fprintf(fp, "\n"); |
| 181 | fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n"); |
| 182 | fprintf(fp, "\n"); |
| 183 | fprintf(fp, "usage : babeltrace-log OUTPUT\n"); |
| 184 | fprintf(fp, "\n"); |
| 185 | fprintf(fp, " OUTPUT Output trace path\n"); |
| 186 | fprintf(fp, "\n"); |
| 187 | } |
| 188 | |
| 189 | int main(int argc, char **argv) |
| 190 | { |
| 191 | int fd, ret; |
| 192 | char *outputname; |
| 193 | DIR *dir; |
| 194 | int dir_fd; |
| 195 | |
| 196 | if (argc < 2) { |
| 197 | usage(stdout); |
| 198 | goto error; |
| 199 | } |
| 200 | outputname = argv[1]; |
| 201 | |
| 202 | ret = mkdir(outputname, S_IRWXU|S_IRWXG); |
| 203 | if (ret) { |
| 204 | perror("mkdir"); |
| 205 | goto error; |
| 206 | } |
| 207 | |
| 208 | dir = opendir(outputname); |
| 209 | if (!dir) { |
| 210 | perror("opendir"); |
| 211 | goto error_rmdir; |
| 212 | } |
| 213 | dir_fd = dirfd(dir); |
| 214 | if (dir_fd < 0) { |
| 215 | perror("dirfd"); |
| 216 | goto error_closedir; |
| 217 | } |
| 218 | |
| 219 | fd = openat(dir_fd, "datastream", O_RDWR|O_CREAT, |
| 220 | S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP); |
| 221 | if (fd < 0) { |
| 222 | perror("openat"); |
| 223 | goto error_closedirfd; |
| 224 | } |
| 225 | |
| 226 | trace_text(stdin, fd); |
| 227 | |
| 228 | close(fd); |
| 229 | exit(EXIT_SUCCESS); |
| 230 | |
| 231 | /* error handling */ |
| 232 | error_closedirfd: |
| 233 | ret = close(dir_fd); |
| 234 | if (ret) |
| 235 | perror("close"); |
| 236 | error_closedir: |
| 237 | ret = closedir(dir); |
| 238 | if (ret) |
| 239 | perror("closedir"); |
| 240 | error_rmdir: |
| 241 | ret = rmdir(outputname); |
| 242 | if (ret) |
| 243 | perror("rmdir"); |
| 244 | error: |
| 245 | exit(EXIT_FAILURE); |
| 246 | } |