| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License, version 2 only, |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | */ |
| 17 | |
| 18 | #define _LGPL_SOURCE |
| 19 | #include <popt.h> |
| 20 | #include <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | #include <sys/stat.h> |
| 24 | #include <sys/types.h> |
| 25 | #include <unistd.h> |
| 26 | |
| 27 | #include <common/mi-lttng.h> |
| 28 | |
| 29 | #include "../command.h" |
| 30 | #include "version.h" |
| 31 | |
| 32 | #ifdef LTTNG_EMBED_HELP |
| 33 | static const char help_msg[] = |
| 34 | #include <lttng-version.1.h> |
| 35 | ; |
| 36 | #endif |
| 37 | |
| 38 | enum { |
| 39 | OPT_HELP = 1, |
| 40 | OPT_LIST_OPTIONS, |
| 41 | }; |
| 42 | |
| 43 | static const char *lttng_license = "lttng is free software and under the GPL license and part LGPL"; |
| 44 | |
| 45 | static struct poptOption long_options[] = { |
| 46 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
| 47 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, |
| 48 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
| 49 | {0, 0, 0, 0, 0, 0, 0} |
| 50 | }; |
| 51 | |
| 52 | /* |
| 53 | * create_version |
| 54 | */ |
| 55 | static void create_version(struct mi_lttng_version *version) |
| 56 | { |
| 57 | strncpy(version->version, VERSION, NAME_MAX); |
| 58 | version->version_major = VERSION_MAJOR; |
| 59 | version->version_minor = VERSION_MINOR; |
| 60 | version->version_patchlevel = VERSION_PATCHLEVEL; |
| 61 | strncpy(version->version_commit, GIT_VERSION, NAME_MAX); |
| 62 | strncpy(version->version_name, VERSION_NAME, NAME_MAX); |
| 63 | strncpy(version->package_url, PACKAGE_URL, NAME_MAX); |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * Print the machine interface output of this command. |
| 68 | */ |
| 69 | static int print_mi() |
| 70 | { |
| 71 | int ret = CMD_SUCCESS; |
| 72 | struct mi_writer *writer = NULL; |
| 73 | struct mi_lttng_version version; |
| 74 | |
| 75 | create_version(&version); |
| 76 | |
| 77 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); |
| 78 | if (!writer) { |
| 79 | ret = -LTTNG_ERR_NOMEM; |
| 80 | goto end; |
| 81 | } |
| 82 | |
| 83 | /* Open the command element */ |
| 84 | ret = mi_lttng_writer_command_open(writer, |
| 85 | mi_lttng_element_command_version); |
| 86 | if (ret) { |
| 87 | ret = CMD_ERROR; |
| 88 | goto error; |
| 89 | } |
| 90 | |
| 91 | /* Beginning of output */ |
| 92 | ret = mi_lttng_writer_open_element(writer, |
| 93 | mi_lttng_element_command_output); |
| 94 | if (ret) { |
| 95 | ret = CMD_ERROR; |
| 96 | goto error; |
| 97 | } |
| 98 | |
| 99 | /* Print the machine interface of version */ |
| 100 | ret = mi_lttng_version(writer, &version, |
| 101 | VERSION_DESCRIPTION, lttng_license); |
| 102 | if (ret) { |
| 103 | ret = CMD_ERROR; |
| 104 | goto error; |
| 105 | } |
| 106 | |
| 107 | /* Close the output element */ |
| 108 | ret = mi_lttng_writer_close_element(writer); |
| 109 | if (ret) { |
| 110 | ret = CMD_ERROR; |
| 111 | goto error; |
| 112 | } |
| 113 | |
| 114 | /* Close the command */ |
| 115 | ret = mi_lttng_writer_command_close(writer); |
| 116 | if (ret) { |
| 117 | ret = CMD_ERROR; |
| 118 | } |
| 119 | |
| 120 | error: |
| 121 | /* Cleanup */ |
| 122 | if (writer && mi_lttng_writer_destroy(writer)) { |
| 123 | /* Preserve original error code */ |
| 124 | ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL; |
| 125 | } |
| 126 | |
| 127 | end: |
| 128 | return ret; |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | * cmd_version |
| 133 | */ |
| 134 | int cmd_version(int argc, const char **argv) |
| 135 | { |
| 136 | int opt, ret = CMD_SUCCESS; |
| 137 | static poptContext pc; |
| 138 | |
| 139 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
| 140 | poptReadDefaultConfig(pc, 0); |
| 141 | |
| 142 | while ((opt = poptGetNextOpt(pc)) != -1) { |
| 143 | switch (opt) { |
| 144 | case OPT_HELP: |
| 145 | SHOW_HELP(); |
| 146 | goto end; |
| 147 | case OPT_LIST_OPTIONS: |
| 148 | list_cmd_options(stdout, long_options); |
| 149 | goto end; |
| 150 | default: |
| 151 | ret = CMD_UNDEFINED; |
| 152 | goto end; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | if (lttng_opt_mi) { |
| 157 | ret = print_mi(); |
| 158 | } else { |
| 159 | MSG("lttng version " VERSION " - " VERSION_NAME "%s", |
| 160 | GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION); |
| 161 | MSG("\n" VERSION_DESCRIPTION "\n"); |
| 162 | MSG("Web site: https://lttng.org"); |
| 163 | MSG("\n%s", lttng_license); |
| 164 | } |
| 165 | |
| 166 | end: |
| 167 | poptFreeContext(pc); |
| 168 | return ret; |
| 169 | } |