diff options
Diffstat (limited to 'main/asterisk.c')
| -rw-r--r-- | main/asterisk.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/main/asterisk.c b/main/asterisk.c index d8d3aebdf..f8d619a79 100644 --- a/main/asterisk.c +++ b/main/asterisk.c @@ -1,7 +1,7 @@ /* * Asterisk -- An open source telephony toolkit. * - * Copyright (C) 1999 - 2008, Digium, Inc. + * Copyright (C) 1999 - 2010, Digium, Inc. * * Mark Spencer <markster@digium.com> * @@ -272,6 +272,8 @@ static char ast_config_AST_CTL_OWNER[PATH_MAX] = "\0"; static char ast_config_AST_CTL_GROUP[PATH_MAX] = "\0"; static char ast_config_AST_CTL[PATH_MAX] = "asterisk.ctl"; +extern unsigned int ast_FD_SETSIZE; + static char *_argv[256]; static int shuttingdown; static int restartnow; @@ -3167,7 +3169,8 @@ int main(int argc, char *argv[]) char *buf; const char *runuser = NULL, *rungroup = NULL; char *remotesock = NULL; - int moduleresult; /*!< Result from the module load subsystem */ + int moduleresult; /*!< Result from the module load subsystem */ + struct rlimit l; /* Remember original args for restart */ if (argc > ARRAY_LEN(_argv) - 1) { @@ -3352,7 +3355,6 @@ int main(int argc, char *argv[]) } if (ast_opt_dump_core) { - struct rlimit l; memset(&l, 0, sizeof(l)); l.rlim_cur = RLIM_INFINITY; l.rlim_max = RLIM_INFINITY; @@ -3361,6 +3363,44 @@ int main(int argc, char *argv[]) } } + if (getrlimit(RLIMIT_NOFILE, &l)) { + ast_log(LOG_WARNING, "Unable to check file descriptor limit: %s\n", strerror(errno)); + } + +#if !defined(CONFIGURE_RAN_AS_ROOT) + /* Check if select(2) will run with more file descriptors */ + do { + int fd, fd2; + ast_fdset readers; + struct timeval tv = { 0, }; + + if (l.rlim_cur <= FD_SETSIZE) { + /* The limit of select()able FDs is irrelevant, because we'll never + * open one that high. */ + break; + } + + if (!(fd = open("/dev/null", O_RDONLY))) { + ast_log(LOG_ERROR, "Cannot open a file descriptor at boot? %s\n", strerror(errno)); + break; /* XXX Should we exit() here? XXX */ + } + + fd2 = (l.rlim_cur > sizeof(readers) * 8 ? sizeof(readers) * 8 : l.rlim_cur) - 1; + if (dup2(fd, fd2)) { + ast_log(LOG_WARNING, "Cannot open maximum file descriptor %d at boot? %s\n", fd2, strerror(errno)); + break; + } + + FD_ZERO(&readers); + FD_SET(fd2, &readers); + if (ast_select(fd2 + 1, &readers, NULL, NULL, &tv) < 0) { + ast_log(LOG_WARNING, "Maximum select()able file descriptor is %d\n", FD_SETSIZE); + } + } while (0); +#elif defined(HAVE_VARIABLE_FDSET) + ast_FD_SETSIZE = l.rlim_cur; +#endif /* !defined(CONFIGURE_RAN_AS_ROOT) */ + if ((!rungroup) && !ast_strlen_zero(ast_config_AST_RUN_GROUP)) rungroup = ast_config_AST_RUN_GROUP; if ((!runuser) && !ast_strlen_zero(ast_config_AST_RUN_USER)) |