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 init_signals(void)
170 if (signal(SIGINT, &signal_handler) == SIG_ERR)
171 return -E_SIGNAL_SIG_ERR;
172 if (signal(SIGTERM, &signal_handler) == SIG_ERR)
173 return -E_SIGNAL_SIG_ERR;
174 if (signal(SIGPIPE, &signal_handler) == SIG_ERR)
175 return -E_SIGNAL_SIG_ERR;
180 * Open the directory table.
182 * \param create If non-zero, create the table first.
186 int open_dir_table(int create)
193 dir_table_desc.dir = adu_strdup(database_dir);
195 INFO_LOG("creating database directory structure\n");
196 ret = mkpath(dir_table_desc.dir, 0777);
199 NOTICE_LOG("creating dir table\n");
200 ret = osl(osl_create_table(&dir_table_desc));
204 INFO_LOG("opening dir table\n");
205 return osl(osl_open_table(&dir_table_desc, &dir_table));
207 free((char *)dir_table_desc.dir);
211 static int check_args(void)
213 if (conf.create_given && !conf.base_dir_given)
216 /* remove trailing slashes from base-dir arg */
217 if (conf.base_dir_given) {
218 size_t len = strlen(conf.base_dir_arg);
220 if (!len) /* empty string */
221 return -ERRNO_TO_ERROR(EINVAL);
222 if (!--len) /* length 1 is always OK */
224 if (conf.base_dir_arg[len] != '/')
225 break; /* no trailing slash, also OK */
226 conf.base_dir_arg[len] = '\0';
232 static void print_complete_help_and_die(void)
236 printf("%s-%s\n", CMDLINE_PARSER_PACKAGE, CMDLINE_PARSER_VERSION);
237 printf("%s\n\n", gengetopt_args_info_purpose);
238 printf("%s\n\n", gengetopt_args_info_usage);
241 line = gengetopt_args_info_help;
243 line = gengetopt_args_info_detailed_help;
244 for (; *line; line++)
245 printf("%s\n", *line);
248 line = select_args_info_help;
250 line = select_args_info_detailed_help;
251 printf("Select options:\n");
252 for (; *line; line++)
253 printf("%s\n", *line);
255 printf("Interactive commands:\n");
256 print_interactive_help();
257 cmdline_parser_free(&conf);
258 select_cmdline_parser_free(&select_conf);
263 * The main function of adu.
265 * \param argc Usual argument count.
266 * \param argv Usual argument vector.
268 * Check command line options, init the signal handlers and
269 * call the main function of the selected mode.
271 * \return \p EXIT_SUCCESS on success, \p EXIT_FAILURE otherwise.
273 int main(int argc, char **argv)
276 struct cmdline_parser_params params = {
280 .check_ambiguity = 0,
283 select_cmdline_parser_init(&select_conf);
284 cmdline_parser_init(&conf);
285 /* ignore errors and print complete help if --help was given */
286 cmdline_parser_ext(argc, argv, &conf, ¶ms);
287 if (conf.help_given || conf.detailed_help_given)
288 print_complete_help_and_die();
289 cmdline_parser_free(&conf);
290 params.check_required = 1;
291 params.check_ambiguity = 1;
292 params.print_errors = 1;
293 ret = cmdline_parser_ext(argc, argv, &conf, ¶ms);
300 ret = init_signals();
304 if (conf.database_dir_given)
305 database_dir = adu_strdup(conf.database_dir_arg);
307 database_dir = make_message("%s%s",
308 conf.database_root_arg, conf.base_dir_arg);
309 if (conf.select_given)
311 else if (conf.create_given)
314 ret = com_interactive();
320 ERROR_LOG("%s\n", adu_strerror(-ret));
321 return -EXIT_FAILURE;
324 cmdline_parser_free(&conf);
325 select_cmdline_parser_free(&select_conf);