Mon Jun 27 16:51:12 2011

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.

Defines

#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)
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.


Define 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 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,
  ... 
)

void closefrom ( int  lowfd  ) 

Definition at line 424 of file strcompat.c.

References errno.

Referenced by ast_close_fds_above_n().

00425 {
00426    long x;
00427    struct rlimit rl;
00428    DIR *dir;
00429    char path[16], *result;
00430    struct dirent *entry;
00431 
00432    snprintf(path, sizeof(path), "/proc/%d/fd", (int) getpid());
00433    if ((dir = opendir(path))) {
00434       while ((entry = readdir(dir))) {
00435          /* Skip . and .. */
00436          if (entry->d_name[0] == '.') {
00437             continue;
00438          }
00439          if ((x = strtol(entry->d_name, &result, 10)) && x >= n) {
00440 #ifdef STRICT_COMPAT
00441             close(x);
00442 #else
00443             /* This isn't strictly compatible, but it's actually faster
00444              * for our purposes to set the CLOEXEC flag than to close
00445              * file descriptors.
00446              */
00447             long flags = fcntl(x, F_GETFD);
00448             if (flags == -1 && errno == EBADF) {
00449                continue;
00450             }
00451             fcntl(x, F_SETFD, flags | FD_CLOEXEC);
00452 #endif
00453          }
00454       }
00455       closedir(dir);
00456    } else {
00457       getrlimit(RLIMIT_NOFILE, &rl);
00458       if (rl.rlim_cur > 65535) {
00459          /* A more reasonable value.  Consider that the primary source of
00460           * file descriptors in Asterisk are UDP sockets, of which we are
00461           * limited to 65,535 per address.  We additionally limit that down
00462           * to about 10,000 sockets per protocol.  While the kernel will
00463           * allow us to set the fileno limit higher (up to 4.2 billion),
00464           * there really is no practical reason for it to be that high.
00465           */
00466          rl.rlim_cur = 65535;
00467       }
00468       for (x = n; x < rl.rlim_cur; x++) {
00469 #ifdef STRICT_COMPAT
00470          close(x);
00471 #else
00472          long flags = fcntl(x, F_GETFD);
00473          if (flags == -1 && errno == EBADF) {
00474             continue;
00475          }
00476          fcntl(x, F_SETFD, flags | FD_CLOEXEC);
00477 #endif
00478       }
00479    }
00480 }

int ffsll ( long long  n  ) 

Referenced by powerof().

int getloadavg ( double *  list,
int  nelem 
)

Referenced by cli_prompt(), increase_call_count(), and sysinfo_helper().

uint64_t htonll ( uint64_t  host64  ) 

Definition at line 385 of file strcompat.c.

Referenced by iax_ie_append_versioned_uint64().

00386 {
00387 #if BYTE_ORDER == BIG_ENDIAN
00388    return host64;
00389 #elif BYTE_ORDER == LITTLE_ENDIAN
00390    union {
00391       unsigned char c[8];
00392       uint64_t u;
00393    } number;
00394    number.u = host64;
00395    return
00396       (((uint64_t) number.c[0]) << 56) |
00397       (((uint64_t) number.c[1]) << 48) |
00398       (((uint64_t) number.c[2]) << 40) |
00399       (((uint64_t) number.c[3]) << 32) |
00400       (((uint64_t) number.c[4]) << 24) |
00401       (((uint64_t) number.c[5]) << 16) |
00402       (((uint64_t) number.c[6]) <<  8) |
00403       (((uint64_t) number.c[7]) <<  0);
00404 #else
00405    #error "Unknown byte order"
00406 #endif
00407 }

char* mkdtemp ( char *  template_s  ) 

uint64_t ntohll ( uint64_t  net64  ) 

Definition at line 359 of file strcompat.c.

Referenced by dump_versioned_codec(), and iax_parse_ies().

00360 {
00361 #if BYTE_ORDER == BIG_ENDIAN
00362    return net64;
00363 #elif BYTE_ORDER == LITTLE_ENDIAN
00364    union {
00365       unsigned char c[8];
00366       uint64_t u;
00367    } number;
00368    number.u = net64;
00369    return
00370       (((uint64_t) number.c[0]) << 56) |
00371       (((uint64_t) number.c[1]) << 48) |
00372       (((uint64_t) number.c[2]) << 40) |
00373       (((uint64_t) number.c[3]) << 32) |
00374       (((uint64_t) number.c[4]) << 24) |
00375       (((uint64_t) number.c[5]) << 16) |
00376       (((uint64_t) number.c[6]) <<  8) |
00377       (((uint64_t) number.c[7]) <<  0);
00378 #else
00379    #error "Unknown byte order"
00380 #endif
00381 }

int setenv ( const char *  name,
const char *  value,
int  overwrite 
)

Referenced by env_init(), env_write(), launch_script(), load_odbc_config(), and read_environment().

char* strcasestr ( const char *  ,
const char *   
)

Referenced by action_originate(), anti_injection(), ast_xmldoc_printable(), common_exec(), find_sdp(), find_table_cb(), frame_trace_helper(), get_rdnis(), get_refer_info(), gettag(), handle_request_invite(), handle_response_register(), handle_show_applications(), modlist_modentry(), parse_moved_contact(), parse_register_contact(), playback_exec(), realtime_multi_odbc(), realtime_odbc(), register_verify(), reqprep(), respprep(), search_directory_sub(), sip_sipredirect(), and word_match().

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(), add_peer_mailboxes(), add_redirect(), 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_state2(), ast_filehelper(), ast_format_str_reduce(), ast_get_group(), ast_netsock_bind(), ast_parse_allow_disallow(), ast_parse_arg(), ast_playtones_start(), ast_read_image(), ast_remotecontrol(), ast_utils_which(), astman_get_variables(), attempt_reconnect(), authenticate_verify(), build_channels(), build_peer(), builtin_atxfer(), check_auth(), check_blacklist(), check_user_full(), check_via_response(), cleanup_stale_contexts(), collect_function_digits(), common_exec(), complete_dialplan_add_ignorepat(), complete_dialplan_add_include(), complete_dialplan_remove_ignorepat(), complete_dialplan_remove_include(), complete_meetmecmd(), conf_exec(), conf_run(), config_curl(), config_line(), config_parse_variables(), connect_link(), console_dial(), create_queue_member(), cut_internal(), data_filter_alloc(), decrypt_frame(), del_exec(), deltree_exec(), dial_exec_full(), dial_trunk(), ewscal_write_event(), exec_exec(), exts_compare(), extstate_read(), feature_interpret_helper(), find_gtalk(), forward_message(), function_fieldnum_helper(), function_fieldqty_helper(), function_ilink(), function_remote(), 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(), load_column_config(), load_config(), load_dynamic_module(), make_components(), mark_parsed_methods(), metermaidstate(), misdn_set_opt_exec(), 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(), 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_users(), pbx_parseable_goto(), peer_set_srcaddr(), pickup_exec(), pickupchan_exec(), playback_exec(), 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_queue_members(), reply_digest(), rpt_exec(), rpt_tele_thread(), search_directory_sub(), send_tone_telemetry(), sendfax_exec(), sendmail(), set(), set_config_flags(), set_insecure_flags(), sig_pri_start_pri(), sip_get_cc_information(), sip_sipredirect(), 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(), and write_htmldump().

uint64_t strtoq ( const char *  nptr,
char **  endptr,
int  base 
)

void timersub ( struct timeval *  tvend,
struct timeval *  tvstart,
struct timeval *  tvdiff 
)

Referenced by ast_rtcp_write_rr(), ast_rtcp_write_sr(), and ast_select().

int unsetenv ( const char *  name  ) 

Referenced by env_write().

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


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