Wed Jan 8 2020 09:50:10

Asterisk developer's documentation


compat.h File Reference

General Definitions for Asterisk top level program Included by asterisk.h to handle platform-specific issues especially those related to header files. More...

#include "asterisk/compiler.h"
#include <inttypes.h>
#include <limits.h>
#include <unistd.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>
#include <stdarg.h>
#include <stdlib.h>
#include <alloca.h>
#include <stdio.h>
#include <string.h>
#include <sys/poll.h>
#include <errno.h>
#include <glob.h>

Go to the source code of this file.

Macros

#define __STDC_VERSION__   0
 
#define LLONG_MAX   9223372036854775807LL
 
#define MY_GLOB_FLAGS   GLOB_NOCHECK
 
#define strlcat   __use__ast_str__functions_not__strlcat__
 
#define strlcpy   __use__ast_copy_string__not__strlcpy__
 

Functions

int asprintf (char **str, const char *fmt,...)
 
void closefrom (int lowfd)
 
int ffsll (long long n)
 
int getloadavg (double *list, int nelem)
 
uint64_t htonll (uint64_t host64)
 
char * mkdtemp (char *template_s)
 
uint64_t ntohll (uint64_t net64)
 
float roundf (float x)
 
int setenv (const char *name, const char *value, int overwrite)
 
char * strcasestr (const char *, const char *)
 
char * strndup (const char *, size_t)
 
size_t strnlen (const char *, size_t)
 
char * strsep (char **str, const char *delims)
 
uint64_t strtoq (const char *nptr, char **endptr, int base)
 
void timersub (struct timeval *tvend, struct timeval *tvstart, struct timeval *tvdiff)
 
int unsetenv (const char *name)
 
int vasprintf (char **strp, const char *fmt, va_list ap)
 

Detailed Description

General Definitions for Asterisk top level program Included by asterisk.h to handle platform-specific issues especially those related to header files.

Definition in file compat.h.

Macro Definition Documentation

#define __STDC_VERSION__   0

Definition at line 25 of file compat.h.

#define LLONG_MAX   9223372036854775807LL

Definition at line 77 of file compat.h.

Referenced by file_read(), and file_write().

#define MY_GLOB_FLAGS   GLOB_NOCHECK

Definition at line 214 of file compat.h.

Referenced by ast_xmldoc_load_documentation(), and config_text_file_load().

#define strlcat   __use__ast_str__functions_not__strlcat__

Definition at line 144 of file compat.h.

#define strlcpy   __use__ast_copy_string__not__strlcpy__

Definition at line 145 of file compat.h.

Function Documentation

int asprintf ( char **  str,
const char *  fmt,
  ... 
)

Referenced by switch().

void closefrom ( int  lowfd)

Definition at line 426 of file strcompat.c.

References errno.

Referenced by ast_close_fds_above_n().

427 {
428  long x;
429  struct rlimit rl;
430  DIR *dir;
431  char path[16], *result;
432  struct dirent *entry;
433 
434  snprintf(path, sizeof(path), "/proc/%d/fd", (int) getpid());
435  if ((dir = opendir(path))) {
436  while ((entry = readdir(dir))) {
437  /* Skip . and .. */
438  if (entry->d_name[0] == '.') {
439  continue;
440  }
441  if ((x = strtol(entry->d_name, &result, 10)) && x >= n) {
442 #ifdef STRICT_COMPAT
443  close(x);
444 #else
445  /* This isn't strictly compatible, but it's actually faster
446  * for our purposes to set the CLOEXEC flag than to close
447  * file descriptors.
448  */
449  long flags = fcntl(x, F_GETFD);
450  if (flags == -1 && errno == EBADF) {
451  continue;
452  }
453  fcntl(x, F_SETFD, flags | FD_CLOEXEC);
454 #endif
455  }
456  }
457  closedir(dir);
458  } else {
459  getrlimit(RLIMIT_NOFILE, &rl);
460  if (rl.rlim_cur > 65535) {
461  /* A more reasonable value. Consider that the primary source of
462  * file descriptors in Asterisk are UDP sockets, of which we are
463  * limited to 65,535 per address. We additionally limit that down
464  * to about 10,000 sockets per protocol. While the kernel will
465  * allow us to set the fileno limit higher (up to 4.2 billion),
466  * there really is no practical reason for it to be that high.
467  */
468  rl.rlim_cur = 65535;
469  }
470  for (x = n; x < rl.rlim_cur; x++) {
471 #ifdef STRICT_COMPAT
472  close(x);
473 #else
474  long flags = fcntl(x, F_GETFD);
475  if (flags == -1 && errno == EBADF) {
476  continue;
477  }
478  fcntl(x, F_SETFD, flags | FD_CLOEXEC);
479 #endif
480  }
481  }
482 }
int errno
int ffsll ( long long  n)

Referenced by powerof().

int getloadavg ( double *  list,
int  nelem 
)
uint64_t htonll ( uint64_t  host64)

Definition at line 387 of file strcompat.c.

Referenced by iax_ie_append_versioned_uint64().

388 {
389 #if BYTE_ORDER == BIG_ENDIAN
390  return host64;
391 #elif BYTE_ORDER == LITTLE_ENDIAN
392  union {
393  unsigned char c[8];
394  uint64_t u;
395  } number;
396  number.u = host64;
397  return
398  (((uint64_t) number.c[0]) << 56) |
399  (((uint64_t) number.c[1]) << 48) |
400  (((uint64_t) number.c[2]) << 40) |
401  (((uint64_t) number.c[3]) << 32) |
402  (((uint64_t) number.c[4]) << 24) |
403  (((uint64_t) number.c[5]) << 16) |
404  (((uint64_t) number.c[6]) << 8) |
405  (((uint64_t) number.c[7]) << 0);
406 #else
407  #error "Unknown byte order"
408 #endif
409 }
Number structure.
Definition: app_followme.c:109
char* mkdtemp ( char *  template_s)
uint64_t ntohll ( uint64_t  net64)

Definition at line 361 of file strcompat.c.

Referenced by dump_versioned_codec(), and iax_parse_ies().

362 {
363 #if BYTE_ORDER == BIG_ENDIAN
364  return net64;
365 #elif BYTE_ORDER == LITTLE_ENDIAN
366  union {
367  unsigned char c[8];
368  uint64_t u;
369  } number;
370  number.u = net64;
371  return
372  (((uint64_t) number.c[0]) << 56) |
373  (((uint64_t) number.c[1]) << 48) |
374  (((uint64_t) number.c[2]) << 40) |
375  (((uint64_t) number.c[3]) << 32) |
376  (((uint64_t) number.c[4]) << 24) |
377  (((uint64_t) number.c[5]) << 16) |
378  (((uint64_t) number.c[6]) << 8) |
379  (((uint64_t) number.c[7]) << 0);
380 #else
381  #error "Unknown byte order"
382 #endif
383 }
Number structure.
Definition: app_followme.c:109
float roundf ( float  x)
int setenv ( const char *  name,
const char *  value,
int  overwrite 
)
char* strndup ( const char *  ,
size_t   
)
size_t strnlen ( const char *  ,
size_t   
)
char* strsep ( char **  str,
const char *  delims 
)

Referenced by __analog_ss_thread(), __ast_play_and_record(), _ast_device_state(), _build_port_config(), _macro_exec(), _parse(), acf_curl_helper(), acf_vmcount_exec(), actual_load_config(), add_peer_mailboxes(), add_redirect(), adsi_load(), adsi_message(), aji_handle_pubsub_event(), analog_ss_thread(), append_history_va(), append_mailbox(), append_mailbox_mapping(), apply_options(), apply_outgoing(), ast_aji_get_client(), ast_app_getdata(), ast_append_ha(), ast_bridge_timelimit(), ast_build_timing(), ast_eivr_getvariable(), ast_eivr_setvariable(), ast_el_strtoarr(), ast_extension_state3(), ast_filehelper(), ast_format_str_reduce(), ast_get_group(), ast_http_get_post_vars(), ast_netsock_bind(), ast_parse_allow_disallow(), ast_parse_arg(), ast_parse_digest(), ast_playtones_start(), ast_read_image(), ast_remotecontrol(), ast_utils_which(), auth_exec(), authenticate_verify(), build_channels(), build_gateway(), build_peer(), builtin_atxfer(), check_auth(), check_blacklist(), check_user_full(), check_via_response(), cleanup_stale_contexts(), complete_dialplan_add_ignorepat(), complete_dialplan_add_include(), complete_dialplan_remove_ignorepat(), complete_dialplan_remove_include(), conf_exec(), conf_run(), config_curl(), config_line(), config_parse_variables(), console_dial(), create_queue_member(), cut_internal(), data_filter_alloc(), decrypt_frame(), del_exec(), deltree_exec(), dial_exec_full(), dial_trunk(), do_say(), ewscal_write_event(), exec_exec(), expand_gosub_args(), exts_compare(), extstate_read(), feature_interpret_helper(), find_gtalk(), forward_message(), function_fieldnum_helper(), function_fieldqty_helper(), function_sippeer(), get_range(), get_rdnis(), get_timerange(), gettag(), gosub_exec(), gtalk_alloc(), gtalk_request(), handle_cli_dialplan_add_extension(), handle_common_options(), handle_debug_dialplan(), handle_request_invite(), handle_request_notify(), handle_show_dialplan(), handle_statechange(), handle_t38_options(), handle_uri(), has_voicemail(), hint_read(), httpd_helper_thread(), iax2_register(), iftime(), inboxcount2(), is_prefix(), ivr_dispatch(), jingle_request(), leave_voicemail(), load_channelvars(), load_column_config(), load_dynamic_module(), make_components(), man_do_variable_value(), mark_parsed_methods(), metermaidstate(), misdn_set_opt_exec(), mkintf(), next_node_name(), notify_message(), notify_new_message(), orig_app(), orig_exten(), originate_exec(), page_exec(), parkandannounce_exec(), parse_apps(), parse_cookies(), parse_dial_string(), parse_empty_options(), parse_events(), parse_register_contact(), parse_session_expires(), parse_uri_full(), parse_via(), pbx_builtin_background(), pbx_builtin_execiftime(), pbx_builtin_gotoif(), pbx_builtin_gotoiftime(), pbx_builtin_importvar(), pbx_builtin_saynumber(), pbx_builtin_setvar(), pbx_find_extension(), pbx_load_config(), pbx_load_users(), pbx_parseable_goto(), peer_set_srcaddr(), pickup_exec(), pickupchan_exec(), playback_exec(), process_applicationmap_line(), process_dahdi(), process_sdp_o(), process_text_line(), queue_mwi_event(), queue_set_param(), read_config_maps(), readfile_exec(), realtime_curl(), realtime_multi_curl(), realtime_multi_odbc(), realtime_multi_pgsql(), realtime_odbc(), realtime_pgsql(), register_exten(), register_peer_exten(), register_verify(), reload_config(), reload_queue_members(), reply_digest(), sdp_crypto_process(), search_directory_sub(), sendfax_exec(), sendmail(), set(), set_config_flags(), set_insecure_flags(), sig_pri_start_pri(), sip_get_cc_information(), sip_sipredirect(), sip_uri_cmp(), sip_uri_headers_cmp(), sip_uri_params_cmp(), sla_add_trunk_to_station(), sla_check_device(), sla_queue_event_conf(), sla_ring_station(), sla_state(), sla_station_exec(), sort_internal(), spawn_mp3(), spawn_ras(), speech_background(), stat_read(), state_notify_build_xml(), store_tone_zone_ring_cadence(), timezone_add(), transmit_fake_auth_response(), tryexec_exec(), unistim_send_mwi_to_peer(), unregister_exten(), update_registry(), vmauthenticate(), write_htmldump(), and xml_translate().

uint64_t strtoq ( const char *  nptr,
char **  endptr,
int  base 
)
void timersub ( struct timeval *  tvend,
struct timeval *  tvstart,
struct timeval *  tvdiff 
)
int unsetenv ( const char *  name)

Referenced by env_write().

int vasprintf ( char **  strp,
const char *  fmt,
va_list  ap 
)

Referenced by _ast_asprintf().