00001 /* 00002 * Asterisk -- An open source telephony toolkit. 00003 * 00004 * Copyright (C) 1999 - 2005, Digium, Inc. 00005 * 00006 * Mark Spencer <markster@digium.com> 00007 * See http://www.asterisk.org for more information about 00008 * the Asterisk project. Please do not directly contact 00009 * any of the maintainers of this project for assistance; 00010 * the project provides a web site, mailing lists and IRC 00011 * channels for your use. 00012 * 00013 * This program is free software, distributed under the terms of 00014 * the GNU General Public License Version 2. See the LICENSE file 00015 * at the top of the source tree. 00016 */ 00017 00018 /*! \file 00019 * \brief Application convenience functions, designed to give consistent 00020 * look and feel to Asterisk apps. 00021 */ 00022 00023 #ifndef _ASTERISK_APP_H 00024 #define _ASTERISK_APP_H 00025 00026 struct ast_flags64; 00027 00028 #if defined(__cplusplus) || defined(c_plusplus) 00029 extern "C" { 00030 #endif 00031 00032 /* IVR stuff */ 00033 00034 /*! \brief Callback function for IVR 00035 \return returns 0 on completion, -1 on hangup or digit if interrupted 00036 */ 00037 typedef int (*ast_ivr_callback)(struct ast_channel *chan, char *option, void *cbdata); 00038 00039 typedef enum { 00040 AST_ACTION_UPONE, /*!< adata is unused */ 00041 AST_ACTION_EXIT, /*!< adata is the return value for ast_ivr_menu_run if channel was not hungup */ 00042 AST_ACTION_CALLBACK, /*!< adata is an ast_ivr_callback */ 00043 AST_ACTION_PLAYBACK, /*!< adata is file to play */ 00044 AST_ACTION_BACKGROUND, /*!< adata is file to play */ 00045 AST_ACTION_PLAYLIST, /*!< adata is list of files, separated by ; to play */ 00046 AST_ACTION_MENU, /*!< adata is a pointer to an ast_ivr_menu */ 00047 AST_ACTION_REPEAT, /*!< adata is max # of repeats, cast to a pointer */ 00048 AST_ACTION_RESTART, /*!< adata is like repeat, but resets repeats to 0 */ 00049 AST_ACTION_TRANSFER, /*!< adata is a string with exten\verbatim[@context]\endverbatim */ 00050 AST_ACTION_WAITOPTION, /*!< adata is a timeout, or 0 for defaults */ 00051 AST_ACTION_NOOP, /*!< adata is unused */ 00052 AST_ACTION_BACKLIST, /*!< adata is list of files separated by ; allows interruption */ 00053 } ast_ivr_action; 00054 00055 /*! 00056 Special "options" are: 00057 \arg "s" - "start here (one time greeting)" 00058 \arg "g" - "greeting/instructions" 00059 \arg "t" - "timeout" 00060 \arg "h" - "hangup" 00061 \arg "i" - "invalid selection" 00062 00063 */ 00064 struct ast_ivr_option { 00065 char *option; 00066 ast_ivr_action action; 00067 void *adata; 00068 }; 00069 00070 struct ast_ivr_menu { 00071 char *title; /*!< Title of menu */ 00072 unsigned int flags; /*!< Flags */ 00073 struct ast_ivr_option *options; /*!< All options */ 00074 }; 00075 00076 #define AST_IVR_FLAG_AUTORESTART (1 << 0) 00077 00078 #define AST_IVR_DECLARE_MENU(holder, title, flags, foo...) \ 00079 static struct ast_ivr_option __options_##holder[] = foo;\ 00080 static struct ast_ivr_menu holder = { title, flags, __options_##holder } 00081 00082 00083 /*! \brief Runs an IVR menu 00084 \return returns 0 on successful completion, -1 on hangup, or -2 on user error in menu */ 00085 int ast_ivr_menu_run(struct ast_channel *c, struct ast_ivr_menu *menu, void *cbdata); 00086 00087 /*! \brief Plays a stream and gets DTMF data from a channel 00088 * \param c Which channel one is interacting with 00089 * \param prompt File to pass to ast_streamfile (the one that you wish to play). 00090 * It is also valid for this to be multiple files concatenated by "&". 00091 * For example, "file1&file2&file3". 00092 * \param s The location where the DTMF data will be stored 00093 * \param maxlen Max Length of the data 00094 * \param timeout Timeout length waiting for data(in milliseconds). Set to 0 for standard timeout(six seconds), or -1 for no time out. 00095 * 00096 * This function was designed for application programmers for situations where they need 00097 * to play a message and then get some DTMF data in response to the message. If a digit 00098 * is pressed during playback, it will immediately break out of the message and continue 00099 * execution of your code. 00100 */ 00101 int ast_app_getdata(struct ast_channel *c, const char *prompt, char *s, int maxlen, int timeout); 00102 00103 /*! \brief Full version with audiofd and controlfd. NOTE: returns '2' on ctrlfd available, not '1' like other full functions */ 00104 int ast_app_getdata_full(struct ast_channel *c, char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd); 00105 00106 /*! 00107 * \brief Set voicemail function callbacks 00108 * \param[in] inboxcount2_func set function pointer 00109 * \param[in] sayname_func set function pointer 00110 * \param[in] inboxcount_func set function pointer 00111 * \param[in] messagecount_func set function pointer 00112 * \version 1.6.1 Added inboxcount2_func, sayname_func 00113 */ 00114 void ast_install_vm_functions(int (*has_voicemail_func)(const char *mailbox, const char *folder), 00115 int (*inboxcount_func)(const char *mailbox, int *newmsgs, int *oldmsgs), 00116 int (*inboxcount2_func)(const char *mailbox, int *urgentmsgs, int *newmsgs, int *oldmsgs), 00117 int (*messagecount_func)(const char *context, const char *mailbox, const char *folder), 00118 int (*sayname_func)(struct ast_channel *chan, const char *mailbox, const char *context)); 00119 00120 void ast_uninstall_vm_functions(void); 00121 00122 /*! \brief Determine if a given mailbox has any voicemail */ 00123 int ast_app_has_voicemail(const char *mailbox, const char *folder); 00124 00125 /*! \brief Determine number of new/old messages in a mailbox */ 00126 int ast_app_inboxcount(const char *mailbox, int *newmsgs, int *oldmsgs); 00127 00128 /*! 00129 * \brief Determine number of urgent/new/old messages in a mailbox 00130 * \param[in] mailbox the mailbox context to use 00131 * \param[out] urgentmsgs the urgent message count 00132 * \param[out] newmsgs the new message count 00133 * \param[out] oldmsgs the old message count 00134 * \return Returns 0 for success, negative upon error 00135 * \since 1.6.1 00136 */ 00137 int ast_app_inboxcount2(const char *mailbox, int *urgentmsgs, int *newmsgs, int *oldmsgs); 00138 00139 /*! 00140 * \brief Given a mailbox and context, play that mailbox owner's name to the channel specified 00141 * \param[in] chan channel to announce name to 00142 * \param[in] mailbox mailbox to retrieve name for 00143 * \param[in] context context to retrieve name for 00144 * \return Returns 0 for success, negative upon error 00145 * \since 1.6.1 00146 */ 00147 int ast_app_sayname(struct ast_channel *chan, const char *mailbox, const char *context); 00148 00149 /*! \brief Determine number of messages in a given mailbox and folder */ 00150 int ast_app_messagecount(const char *context, const char *mailbox, const char *folder); 00151 00152 /*! \brief Safely spawn an external program while closing file descriptors 00153 \note This replaces the \b system call in all Asterisk modules 00154 */ 00155 int ast_safe_system(const char *s); 00156 00157 /*! 00158 * \brief Replace the SIGCHLD handler 00159 * 00160 * Normally, Asterisk has a SIGCHLD handler that is cleaning up all zombie 00161 * processes from forking elsewhere in Asterisk. However, if you want to 00162 * wait*() on the process to retrieve information about it's exit status, 00163 * then this signal handler needs to be temporarily replaced. 00164 * 00165 * Code that executes this function *must* call ast_unreplace_sigchld() 00166 * after it is finished doing the wait*(). 00167 */ 00168 void ast_replace_sigchld(void); 00169 00170 /*! 00171 * \brief Restore the SIGCHLD handler 00172 * 00173 * This function is called after a call to ast_replace_sigchld. It restores 00174 * the SIGCHLD handler that cleans up any zombie processes. 00175 */ 00176 void ast_unreplace_sigchld(void); 00177 00178 /*! 00179 \brief Send DTMF to a channel 00180 00181 \param chan The channel that will receive the DTMF frames 00182 \param peer (optional) Peer channel that will be autoserviced while the 00183 primary channel is receiving DTMF 00184 \param digits This is a string of characters representing the DTMF digits 00185 to be sent to the channel. Valid characters are 00186 "0123456789*#abcdABCD". Note: You can pass arguments 'f' or 00187 'F', if you want to Flash the channel (if supported by the 00188 channel), or 'w' to add a 500 millisecond pause to the DTMF 00189 sequence. 00190 \param between This is the number of milliseconds to wait in between each 00191 DTMF digit. If zero milliseconds is specified, then the 00192 default value of 100 will be used. 00193 \param duration This is the duration that each DTMF digit should have. 00194 */ 00195 int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between, unsigned int duration); 00196 00197 /*! \brief Stream a filename (or file descriptor) as a generator. */ 00198 int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride); 00199 00200 /*! 00201 * \brief Stream a file with fast forward, pause, reverse, restart. 00202 * \param chan 00203 * \param file filename 00204 * \param fwd, rev, stop, pause, restart, skipms, offsetms 00205 * 00206 * Before calling this function, set this to be the number 00207 * of ms to start from the beginning of the file. When the function 00208 * returns, it will be the number of ms from the beginning where the 00209 * playback stopped. Pass NULL if you don't care. 00210 */ 00211 int ast_control_streamfile(struct ast_channel *chan, const char *file, const char *fwd, const char *rev, const char *stop, const char *pause, const char *restart, int skipms, long *offsetms); 00212 00213 /*! \brief Play a stream and wait for a digit, returning the digit that was pressed */ 00214 int ast_play_and_wait(struct ast_channel *chan, const char *fn); 00215 00216 int ast_play_and_record_full(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime_sec, const char *fmt, int *duration, int silencethreshold, int maxsilence_ms, const char *path, const char *acceptdtmf, const char *canceldtmf); 00217 00218 /*! \brief Record a file for a max amount of time (in seconds), in a given list of formats separated by '|', outputting the duration of the recording, and with a maximum 00219 \n 00220 permitted silence time in milliseconds of 'maxsilence' under 'silencethreshold' or use '-1' for either or both parameters for defaults. 00221 calls ast_unlock_path() on 'path' if passed */ 00222 int ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime_sec, const char *fmt, int *duration, int silencethreshold, int maxsilence_ms, const char *path); 00223 00224 /*! \brief Record a message and prepend the message to the given record file after 00225 playing the optional playfile (or a beep), storing the duration in 00226 'duration' and with a maximum permitted silence time in milliseconds of 'maxsilence' under 00227 'silencethreshold' or use '-1' for either or both parameters for defaults. */ 00228 int ast_play_and_prepend(struct ast_channel *chan, char *playfile, char *recordfile, int maxtime_sec, char *fmt, int *duration, int beep, int silencethreshold, int maxsilence_ms); 00229 00230 enum ast_getdata_result { 00231 AST_GETDATA_FAILED = -1, 00232 AST_GETDATA_COMPLETE = 0, 00233 AST_GETDATA_TIMEOUT = 1, 00234 AST_GETDATA_INTERRUPTED = 2, 00235 /*! indicates a user terminated empty string rather than an empty string resulting 00236 * from a timeout or other factors */ 00237 AST_GETDATA_EMPTY_END_TERMINATED = 3, 00238 }; 00239 00240 enum AST_LOCK_RESULT { 00241 AST_LOCK_SUCCESS = 0, 00242 AST_LOCK_TIMEOUT = -1, 00243 AST_LOCK_PATH_NOT_FOUND = -2, 00244 AST_LOCK_FAILURE = -3, 00245 }; 00246 00247 /*! \brief Type of locking to use in ast_lock_path / ast_unlock_path */ 00248 enum AST_LOCK_TYPE { 00249 AST_LOCK_TYPE_LOCKFILE = 0, 00250 AST_LOCK_TYPE_FLOCK = 1, 00251 }; 00252 00253 /*! 00254 * \brief Set the type of locks used by ast_lock_path() 00255 * \param type the locking type to use 00256 */ 00257 void ast_set_lock_type(enum AST_LOCK_TYPE type); 00258 00259 /*! 00260 * \brief Lock a filesystem path. 00261 * \param path the path to be locked 00262 * \return one of \ref AST_LOCK_RESULT values 00263 */ 00264 enum AST_LOCK_RESULT ast_lock_path(const char *path); 00265 00266 /*! \brief Unlock a path */ 00267 int ast_unlock_path(const char *path); 00268 00269 /*! \brief Read a file into asterisk*/ 00270 char *ast_read_textfile(const char *file); 00271 00272 struct ast_group_info; 00273 00274 /*! \brief Split a group string into group and category, returning a default category if none is provided. */ 00275 int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max); 00276 00277 /*! \brief Set the group for a channel, splitting the provided data into group and category, if specified. */ 00278 int ast_app_group_set_channel(struct ast_channel *chan, const char *data); 00279 00280 /*! \brief Get the current channel count of the specified group and category. */ 00281 int ast_app_group_get_count(const char *group, const char *category); 00282 00283 /*! \brief Get the current channel count of all groups that match the specified pattern and category. */ 00284 int ast_app_group_match_get_count(const char *groupmatch, const char *category); 00285 00286 /*! \brief Discard all group counting for a channel */ 00287 int ast_app_group_discard(struct ast_channel *chan); 00288 00289 /*! \brief Update all group counting for a channel to a new one */ 00290 int ast_app_group_update(struct ast_channel *oldchan, struct ast_channel *newchan); 00291 00292 /*! \brief Write Lock the group count list */ 00293 int ast_app_group_list_wrlock(void); 00294 00295 /*! \brief Read Lock the group count list */ 00296 int ast_app_group_list_rdlock(void); 00297 00298 /*! \brief Get the head of the group count list */ 00299 struct ast_group_info *ast_app_group_list_head(void); 00300 00301 /*! \brief Unlock the group count list */ 00302 int ast_app_group_list_unlock(void); 00303 00304 /*! 00305 \brief Define an application argument 00306 \param name The name of the argument 00307 */ 00308 #define AST_APP_ARG(name) char *name 00309 00310 /*! 00311 \brief Declare a structure to hold an application's arguments. 00312 \param name The name of the structure 00313 \param arglist The list of arguments, defined using AST_APP_ARG 00314 00315 This macro declares a structure intended to be used in a call 00316 to ast_app_separate_args(). The structure includes all the 00317 arguments specified, plus an argv array that overlays them and an 00318 argc argument counter. The arguments must be declared using AST_APP_ARG, 00319 and they will all be character pointers (strings). 00320 00321 \note The structure is <b>not</b> initialized, as the call to 00322 ast_app_separate_args() will perform that function before parsing 00323 the arguments. 00324 */ 00325 #define AST_DECLARE_APP_ARGS(name, arglist) AST_DEFINE_APP_ARGS_TYPE(, arglist) name 00326 00327 /*! 00328 \brief Define a structure type to hold an application's arguments. 00329 \param type The name of the structure type 00330 \param arglist The list of arguments, defined using AST_APP_ARG 00331 00332 This macro defines a structure type intended to be used in a call 00333 to ast_app_separate_args(). The structure includes all the 00334 arguments specified, plus an argv array that overlays them and an 00335 argc argument counter. The arguments must be declared using AST_APP_ARG, 00336 and they will all be character pointers (strings). 00337 00338 \note This defines a structure type, but does not declare an instance 00339 of the structure. That must be done separately. 00340 */ 00341 #define AST_DEFINE_APP_ARGS_TYPE(type, arglist) \ 00342 struct type { \ 00343 unsigned int argc; \ 00344 char *argv[0]; \ 00345 arglist \ 00346 } 00347 00348 /*! 00349 \brief Performs the 'standard' argument separation process for an application. 00350 \param args An argument structure defined using AST_DECLARE_APP_ARGS 00351 \param parse A modifiable buffer containing the input to be parsed 00352 00353 This function will separate the input string using the standard argument 00354 separator character ',' and fill in the provided structure, including 00355 the argc argument counter field. 00356 */ 00357 #define AST_STANDARD_APP_ARGS(args, parse) \ 00358 args.argc = ast_app_separate_args(parse, ',', args.argv, ((sizeof(args) - offsetof(typeof(args), argv)) / sizeof(args.argv[0]))) 00359 00360 /*! 00361 \brief Performs the 'nonstandard' argument separation process for an application. 00362 \param args An argument structure defined using AST_DECLARE_APP_ARGS 00363 \param parse A modifiable buffer containing the input to be parsed 00364 \param sep A nonstandard separator character 00365 00366 This function will separate the input string using the nonstandard argument 00367 separator character and fill in the provided structure, including 00368 the argc argument counter field. 00369 */ 00370 #define AST_NONSTANDARD_APP_ARGS(args, parse, sep) \ 00371 args.argc = ast_app_separate_args(parse, sep, args.argv, ((sizeof(args) - offsetof(typeof(args), argv)) / sizeof(args.argv[0]))) 00372 00373 /*! 00374 \brief Separate a string into arguments in an array 00375 \param buf The string to be parsed (this must be a writable copy, as it will be modified) 00376 \param delim The character to be used to delimit arguments 00377 \param array An array of 'char *' to be filled in with pointers to the found arguments 00378 \param arraylen The number of elements in the array (i.e. the number of arguments you will accept) 00379 00380 Note: if there are more arguments in the string than the array will hold, the last element of 00381 the array will contain the remaining arguments, not separated. 00382 00383 The array will be completely zeroed by this function before it populates any entries. 00384 00385 \return The number of arguments found, or zero if the function arguments are not valid. 00386 */ 00387 unsigned int ast_app_separate_args(char *buf, char delim, char **array, int arraylen); 00388 00389 /*! 00390 \brief A structure to hold the description of an application 'option'. 00391 00392 Application 'options' are single-character flags that can be supplied 00393 to the application to affect its behavior; they can also optionally 00394 accept arguments enclosed in parenthesis. 00395 00396 These structures are used by the ast_app_parse_options function, uses 00397 this data to fill in a flags structure (to indicate which options were 00398 supplied) and array of argument pointers (for those options that had 00399 arguments supplied). 00400 */ 00401 struct ast_app_option { 00402 /*! \brief The flag bit that represents this option. */ 00403 uint64_t flag; 00404 /*! \brief The index of the entry in the arguments array 00405 that should be used for this option's argument. */ 00406 unsigned int arg_index; 00407 }; 00408 00409 #define BEGIN_OPTIONS { 00410 #define END_OPTIONS } 00411 00412 /*! 00413 \brief Declares an array of options for an application. 00414 \param holder The name of the array to be created 00415 \param options The actual options to be placed into the array 00416 \sa ast_app_parse_options 00417 00418 This macro declares a 'static const' array of \c struct \c ast_option 00419 elements to hold the list of available options for an application. 00420 Each option must be declared using either the AST_APP_OPTION() 00421 or AST_APP_OPTION_ARG() macros. 00422 00423 Example usage: 00424 \code 00425 enum { 00426 OPT_JUMP = (1 << 0), 00427 OPT_BLAH = (1 << 1), 00428 OPT_BLORT = (1 << 2), 00429 } my_app_option_flags; 00430 00431 enum { 00432 OPT_ARG_BLAH = 0, 00433 OPT_ARG_BLORT, 00434 !! this entry tells how many possible arguments there are, 00435 and must be the last entry in the list 00436 OPT_ARG_ARRAY_SIZE, 00437 } my_app_option_args; 00438 00439 AST_APP_OPTIONS(my_app_options, { 00440 AST_APP_OPTION('j', OPT_JUMP), 00441 AST_APP_OPTION_ARG('b', OPT_BLAH, OPT_ARG_BLAH), 00442 AST_APP_OPTION_BLORT('B', OPT_BLORT, OPT_ARG_BLORT), 00443 }); 00444 00445 static int my_app_exec(struct ast_channel *chan, void *data) 00446 { 00447 char *options; 00448 struct ast_flags opts = { 0, }; 00449 char *opt_args[OPT_ARG_ARRAY_SIZE]; 00450 00451 ... do any argument parsing here ... 00452 00453 if (ast_parseoptions(my_app_options, &opts, opt_args, options)) { 00454 ast_module_user_remove(u); 00455 return -1; 00456 } 00457 } 00458 \endcode 00459 */ 00460 #define AST_APP_OPTIONS(holder, options...) \ 00461 static const struct ast_app_option holder[128] = options 00462 00463 /*! 00464 \brief Declares an application option that does not accept an argument. 00465 \param option The single character representing the option 00466 \param flagno The flag index to be set if this option is present 00467 \sa AST_APP_OPTIONS, ast_app_parse_options 00468 */ 00469 #define AST_APP_OPTION(option, flagno) \ 00470 [option] = { .flag = flagno } 00471 00472 /*! 00473 \brief Declares an application option that accepts an argument. 00474 \param option The single character representing the option 00475 \param flagno The flag index to be set if this option is present 00476 \param argno The index into the argument array where the argument should 00477 be placed 00478 \sa AST_APP_OPTIONS, ast_app_parse_options 00479 */ 00480 #define AST_APP_OPTION_ARG(option, flagno, argno) \ 00481 [option] = { .flag = flagno, .arg_index = argno + 1 } 00482 00483 /*! 00484 \brief Parses a string containing application options and sets flags/arguments. 00485 \param options The array of possible options declared with AST_APP_OPTIONS 00486 \param flags The flag structure to have option flags set 00487 \param args The array of argument pointers to hold arguments found 00488 \param optstr The string containing the options to be parsed 00489 \return zero for success, non-zero if an error occurs 00490 \sa AST_APP_OPTIONS 00491 */ 00492 int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr); 00493 00494 /*! 00495 \brief Parses a string containing application options and sets flags/arguments. 00496 \param options The array of possible options declared with AST_APP_OPTIONS 00497 \param flags The 64-bit flag structure to have option flags set 00498 \param args The array of argument pointers to hold arguments found 00499 \param optstr The string containing the options to be parsed 00500 \return zero for success, non-zero if an error occurs 00501 \sa AST_APP_OPTIONS 00502 */ 00503 int ast_app_parse_options64(const struct ast_app_option *options, struct ast_flags64 *flags, char **args, char *optstr); 00504 00505 /*! \brief Given a list of options array, return an option string based on passed flags 00506 \param options The array of possible options declared with AST_APP_OPTIONS 00507 \param flags The flags of the options that you wish to populate the buffer with 00508 \param buf The buffer to fill with the string of options 00509 \param len The maximum length of buf 00510 */ 00511 void ast_app_options2str64(const struct ast_app_option *options, struct ast_flags64 *flags, char *buf, size_t len); 00512 00513 /*! \brief Present a dialtone and collect a certain length extension. 00514 \return Returns 1 on valid extension entered, -1 on hangup, or 0 on invalid extension. 00515 \note Note that if 'collect' holds digits already, new digits will be appended, so be sure it's initialized properly */ 00516 int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout); 00517 00518 /*! \brief Allow to record message and have a review option */ 00519 int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path); 00520 00521 /*! \brief Decode an encoded control or extended ASCII character */ 00522 int ast_get_encoded_char(const char *stream, char *result, size_t *consumed); 00523 00524 /*! \brief Decode a string which may contain multiple encoded control or extended ASCII characters */ 00525 int ast_get_encoded_str(const char *stream, char *result, size_t result_size); 00526 00527 /*! \brief Decode a stream of encoded control or extended ASCII characters */ 00528 int ast_str_get_encoded_str(struct ast_str **str, int maxlen, const char *stream); 00529 00530 /*! 00531 * \brief Common routine for child processes, to close all fds prior to exec(2) 00532 * \param[in] n starting file descriptor number for closing all higher file descriptors 00533 * \since 1.6.1 00534 */ 00535 void ast_close_fds_above_n(int n); 00536 00537 /*! 00538 * \brief Common routine to safely fork without a chance of a signal handler firing badly in the child 00539 * \param[in] stop_reaper flag to determine if sigchld handler is replaced or not 00540 * \since 1.6.1 00541 */ 00542 int ast_safe_fork(int stop_reaper); 00543 00544 /*! 00545 * \brief Common routine to cleanup after fork'ed process is complete (if reaping was stopped) 00546 * \since 1.6.1 00547 */ 00548 void ast_safe_fork_cleanup(void); 00549 00550 #if defined(__cplusplus) || defined(c_plusplus) 00551 } 00552 #endif 00553 00554 #endif /* _ASTERISK_APP_H */