2 * Copyright (C) 2008 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file adu.c \brief The main functions used by all modes of operation. */
10 * \mainpage adu API reference
12 * - Modes of operation: \ref select.c, \ref create.c, \ref interactive.c
13 * - User handling: \ref user.c
14 * - Error handling: \ref error.h
15 * - Library-type functions: \ref fd.c, \ref format.c, \ref string.c, \ref portable_io.h, \ref bloom.c
19 #include <dirent.h> /* readdir() */
23 #include "select.cmdline.h"
30 /** Define the array of error descriptions. */
34 * The error code of the last called osl library function.
40 /** In case a signal is received, its number is stored here. */
43 /** Command line and config file options. */
44 struct gengetopt_args_info conf;
46 /** Options passed to --select-options. */
47 struct select_args_info select_conf;
49 /** Computed database dir */
53 * The table containing the directory names and statistics.
55 struct osl_table *dir_table = NULL;
57 static struct osl_column_description dir_table_cols[] = {
59 .storage_type = OSL_MAPPED_STORAGE,
64 .storage_type = OSL_MAPPED_STORAGE,
65 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
67 .compare_function = uint64_compare,
68 .data_size = sizeof(uint64_t)
71 .storage_type = OSL_MAPPED_STORAGE,
72 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE | OSL_UNIQUE,
74 .compare_function = size_compare,
75 .data_size = sizeof(uint64_t)
78 .storage_type = OSL_MAPPED_STORAGE,
79 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
80 .compare_function = size_compare,
82 .data_size = sizeof(uint64_t)
85 .storage_type = OSL_MAPPED_STORAGE,
86 .storage_flags = OSL_RBTREE | OSL_FIXED_SIZE,
87 .compare_function = size_compare,
89 .data_size = sizeof(uint64_t)
93 static struct osl_table_description dir_table_desc = {
95 .num_columns = NUM_DT_COLUMNS,
97 .column_descriptions = dir_table_cols,
103 * \param ll Loglevel.
104 * \param fmt Usual format string.
106 * All XXX_LOG() macros use this function.
108 __printf_2_3 void __log(int ll, const char* fmt,...)
116 if (ll < conf.loglevel_arg)
121 strftime(str, sizeof(str), "%b %d %H:%M:%S", tm);
122 fprintf(outfd, "%s ", str);
124 vfprintf(outfd, fmt, argp);
128 static void close_dir_table(void)
134 NOTICE_LOG("closing dir table\n");
135 ret = osl(osl_close_table(dir_table, OSL_MARK_CLEAN));
137 ERROR_LOG("failed to close dir table: %s\n", adu_strerror(-ret));
138 free((char *)dir_table_desc.dir);
142 static void close_all_tables(void)
148 static void signal_handler(int s)
154 * Check whether to terminate adu.
156 * Check whether a signal was caught that should terminate the
157 * adu process. If yes, close all osl tables and exit gracefully.
159 void check_signals(void)
163 EMERG_LOG("caught signal %d\n", signum);
168 static int catch_signal(int sig)
170 struct sigaction act;
172 act.sa_handler = signal_handler;
173 sigemptyset(&act.sa_mask);
175 return sigaction(sig, &act, NULL);
178 static int init_signals(void)
180 if (catch_signal(SIGINT) < 0)
182 if (catch_signal(SIGTERM) < 0)
184 if (catch_signal(SIGPIPE) < 0)
190 * Open the directory table.
192 * \param create If non-zero, create the table first.
196 int open_dir_table(int create)
203 dir_table_desc.dir = adu_strdup(database_dir);
205 INFO_LOG("creating database directory structure\n");
206 ret = mkpath(dir_table_desc.dir, 0777);
209 NOTICE_LOG("creating dir table\n");
210 ret = osl(osl_create_table(&dir_table_desc));
212 ERROR_LOG("could not create %s\n", dir_table_desc.dir);
216 INFO_LOG("opening dir table\n");
217 return osl(osl_open_table(&dir_table_desc, &dir_table));
219 free((char *)dir_table_desc.dir);
223 static int check_args(void)
225 if (conf.create_given && !conf.base_dir_given)
228 /* remove trailing slashes from base-dir arg */
229 if (conf.base_dir_given) {
230 size_t len = strlen(conf.base_dir_arg);
232 if (!len) /* empty string */
233 return -ERRNO_TO_ERROR(EINVAL);
234 if (!--len) /* length 1 is always OK */
236 if (conf.base_dir_arg[len] != '/')
237 break; /* no trailing slash, also OK */
238 conf.base_dir_arg[len] = '\0';
244 static void print_complete_help_and_die(void)
248 printf("%s-%s\n", CMDLINE_PARSER_PACKAGE, CMDLINE_PARSER_VERSION);
249 printf("%s\n\n", gengetopt_args_info_purpose);
250 printf("%s\n\n", gengetopt_args_info_usage);
253 line = gengetopt_args_info_help;
255 line = gengetopt_args_info_detailed_help;
256 for (; *line; line++)
257 printf("%s\n", *line);
260 line = select_args_info_help;
262 line = select_args_info_detailed_help;
263 printf("Select options:\n");
264 for (; *line; line++)
265 printf("%s\n", *line);
267 printf("Interactive commands:\n");
268 print_interactive_help();
269 cmdline_parser_free(&conf);
270 select_cmdline_parser_free(&select_conf);
274 static void get_database_dir_or_die(void)
278 if (conf.database_dir_given)
279 tmp = adu_strdup(conf.database_dir_arg);
281 tmp = make_message("%s%s",
282 conf.database_root_arg, conf.base_dir_arg);
284 * As we change the cwd during database creation, database_dir
285 * must be an absolute path.
287 database_dir = absolute_path(tmp);
291 EMERG_LOG("failed to get absolute path of database dir\n");
296 * The main function of adu.
298 * \param argc Usual argument count.
299 * \param argv Usual argument vector.
301 * Check command line options, init the signal handlers and
302 * call the main function of the selected mode.
304 * \return \p EXIT_SUCCESS on success, \p EXIT_FAILURE otherwise.
306 int main(int argc, char **argv)
309 struct cmdline_parser_params params = {
313 .check_ambiguity = 0,
316 select_cmdline_parser_init(&select_conf);
317 cmdline_parser_init(&conf);
318 /* ignore errors and print complete help if --help was given */
319 cmdline_parser_ext(argc, argv, &conf, ¶ms);
320 if (conf.help_given || conf.detailed_help_given)
321 print_complete_help_and_die();
322 cmdline_parser_free(&conf);
323 params.check_required = 1;
324 params.check_ambiguity = 1;
325 params.print_errors = 1;
326 ret = cmdline_parser_ext(argc, argv, &conf, ¶ms);
333 ret = init_signals();
336 get_database_dir_or_die();
337 if (conf.select_given)
339 else if (conf.create_given)
342 ret = com_interactive();
348 ERROR_LOG("%s\n", adu_strerror(-ret));
349 return -EXIT_FAILURE;
352 cmdline_parser_free(&conf);
353 select_cmdline_parser_free(&select_conf);