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Standardized routines for forking processes (keeps all the specialized code in one place).

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@114188 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2008-04-16 22:57:54 +00:00
parent 752f6681b1
commit 123ac5fd64
13 changed files with 163 additions and 137 deletions
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14
apps/app_externalivr.c
View File

@@ -319,14 +319,10 @@ static int app_exec(struct ast_channel *chan, void *data)
.finishlist = AST_LIST_HEAD_INIT_VALUE,
};
struct ivr_localuser *u = &foo;
sigset_t fullset, oldset;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(cmd)[32];
);
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
u->abort_current_sound = 0;
u->chan = chan;
@@ -405,7 +401,7 @@ static int app_exec(struct ast_channel *chan, void *data)
gen_active = 1;
}
pid = fork();
pid = ast_safe_fork(0);
if (pid < 0) {
ast_log(LOG_WARNING, "Failed to fork(): %s\n", strerror(errno));
goto exit;
@@ -413,19 +409,13 @@ static int app_exec(struct ast_channel *chan, void *data)
if (!pid) {
/* child process */
int i;
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
if (ast_opt_high_priority)
ast_set_priority(0);
dup2(child_stdin[0], STDIN_FILENO);
dup2(child_stdout[1], STDOUT_FILENO);
dup2(child_stderr[1], STDERR_FILENO);
for (i = STDERR_FILENO + 1; i < 1024; i++)
close(i);
ast_close_fds_above_n(STDERR_FILENO);
execv(args.cmd[0], args.cmd);
fprintf(stderr, "Failed to execute '%s': %s\n", args.cmd[0], strerror(errno));
_exit(1);

16
apps/app_festival.c
View File

@@ -117,30 +117,20 @@ static char *socket_receive_file_to_buff(int fd, int *size)
static int send_waveform_to_fd(char *waveform, int length, int fd)
{
int res;
int x;
#ifdef __PPC__
char c;
#endif
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
res = fork();
res = ast_safe_fork(0);
if (res < 0)
ast_log(LOG_WARNING, "Fork failed\n");
if (res) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return res;
}
for (x = 0; x < 256; x++) {
if (x != fd)
close(x);
}
dup2(fd, 0);
ast_close_fds_above_n(0);
if (ast_opt_high_priority)
ast_set_priority(0);
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
#ifdef __PPC__
for (x = 0; x < length; x += 2) {
c = *(waveform + x + 1);

20
apps/app_ices.c
View File

@@ -43,6 +43,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/app.h"
#define ICES "/usr/bin/ices"
#define LOCAL_ICES "/usr/local/bin/ices"
@@ -60,31 +61,18 @@ static char *descrip =
static int icesencode(char *filename, int fd)
{
int res;
int x;
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
res = fork();
res = ast_safe_fork(0);
if (res < 0)
ast_log(LOG_WARNING, "Fork failed\n");
if (res) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return res;
}
/* Stop ignoring PIPE */
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
if (ast_opt_high_priority)
ast_set_priority(0);
dup2(fd, STDIN_FILENO);
for (x=STDERR_FILENO + 1;x<1024;x++) {
if ((x != STDIN_FILENO) && (x != STDOUT_FILENO))
close(x);
}
ast_close_fds_above_n(STDERR_FILENO);
/* Most commonly installed in /usr/local/bin */
execl(ICES, "ices", filename, (char *)NULL);
/* But many places has it in /usr/bin */
@@ -183,7 +171,7 @@ static int ices_exec(struct ast_channel *chan, void *data)
}
}
close(fds[1]);
if (pid > -1)
kill(pid, SIGKILL);
if (!res && oreadformat)

20
apps/app_mp3.c
View File

@@ -39,6 +39,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/app.h"
#define LOCAL_MPG_123 "/usr/local/bin/mpg123"
#define MPG_123 "/usr/bin/mpg123"
@@ -56,29 +57,19 @@ static char *descrip =
static int mp3play(char *filename, int fd)
{
int res;
int x;
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
res = fork();
res = ast_safe_fork(0);
if (res < 0)
ast_log(LOG_WARNING, "Fork failed\n");
if (res) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return res;
}
if (ast_opt_high_priority)
ast_set_priority(0);
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
dup2(fd, STDOUT_FILENO);
for (x=STDERR_FILENO + 1;x<256;x++) {
if (x != STDOUT_FILENO)
close(x);
}
ast_close_fds_above_n(STDERR_FILENO);
/* Execute mpg123, but buffer if it's a net connection */
if (!strncasecmp(filename, "http://", 7)) {
/* Most commonly installed in /usr/local/bin */
@@ -96,7 +87,8 @@ static int mp3play(char *filename, int fd)
/* As a last-ditch effort, try to use PATH */
execlp("mpg123", "mpg123", "-q", "-s", "-f", "8192", "--mono", "-r", "8000", filename, (char *)NULL);
}
ast_log(LOG_WARNING, "Execute of mpg123 failed\n");
/* Can't use ast_log since FD's are closed */
fprintf(stderr, "Execute of mpg123 failed\n");
_exit(0);
}

22
apps/app_nbscat.c
View File

@@ -41,6 +41,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/app.h"
#define LOCAL_NBSCAT "/usr/local/bin/nbscat8k"
#define NBSCAT "/usr/bin/nbscat8k"
@@ -61,34 +62,25 @@ static char *descrip =
static int NBScatplay(int fd)
{
int res;
int x;
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
res = fork();
if (res < 0)
res = ast_safe_fork(0);
if (res < 0) {
ast_log(LOG_WARNING, "Fork failed\n");
}
if (res) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return res;
}
signal(SIGPIPE, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
if (ast_opt_high_priority)
ast_set_priority(0);
dup2(fd, STDOUT_FILENO);
for (x = STDERR_FILENO + 1; x < 1024; x++) {
if (x != STDOUT_FILENO)
close(x);
}
ast_close_fds_above_n(STDERR_FILENO);
/* Most commonly installed in /usr/local/bin */
execl(NBSCAT, "nbscat8k", "-d", (char *)NULL);
execl(LOCAL_NBSCAT, "nbscat8k", "-d", (char *)NULL);
ast_log(LOG_WARNING, "Execute of nbscat8k failed\n");
fprintf(stderr, "Execute of nbscat8k failed\n");
_exit(0);
}

19
apps/app_zapras.c
View File

@@ -50,6 +50,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/app.h"
static char *app = "ZapRAS";
@@ -69,30 +70,18 @@ static char *descrip =
static pid_t spawn_ras(struct ast_channel *chan, char *args)
{
pid_t pid;
int x;
char *c;
char *argv[PPP_MAX_ARGS];
int argc = 0;
char *stringp=NULL;
sigset_t fullset, oldset;
sigfillset(&fullset);
pthread_sigmask(SIG_BLOCK, &fullset, &oldset);
/* Start by forking */
pid = fork();
pid = ast_safe_fork(1);
if (pid) {
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
return pid;
}
/* Restore original signal handlers */
for (x=0;x<NSIG;x++)
signal(x, SIG_DFL);
pthread_sigmask(SIG_UNBLOCK, &fullset, NULL);
/* Execute RAS on File handles */
dup2(chan->fds[0], STDIN_FILENO);
@@ -101,8 +90,7 @@ static pid_t spawn_ras(struct ast_channel *chan, char *args)
ast_set_priority(0);
/* Close other file descriptors */
for (x=STDERR_FILENO + 1;x<1024;x++)
close(x);
ast_close_fds_above_n(STDERR_FILENO);
/* Reset all arguments */
memset(argv, 0, sizeof(argv));
@@ -185,6 +173,7 @@ static void run_ras(struct ast_channel *chan, char *args)
break;
}
}
ast_safe_fork_cleanup();
}
static int zapras_exec(struct ast_channel *chan, void *data)