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#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/param.h>
#include <signal.h>
#include <sys/wait.h>
#include "ltrace.h"
#include "output.h"
#include "read_config_file.h"
#include "options.h"
#ifndef SYSCONFDIR
#define SYSCONFDIR "/etc"
#endif
char * command = NULL;
struct process * list_of_processes = NULL;
int exiting=0; /* =1 if a SIGINT or SIGTERM has been received */
static void
signal_alarm(int sig) {
struct process * tmp = list_of_processes;
signal(SIGALRM,SIG_DFL);
while(tmp) {
struct opt_p_t * tmp2 = opt_p;
while(tmp2) {
if (tmp->pid == tmp2->pid) {
tmp = tmp->next;
if (!tmp) {
return;
}
break;
}
tmp2 = tmp2->next;
}
if (opt_d>1) {
output_line(0,"Sending SIGSTOP to process %u\n",tmp->pid);
}
kill(tmp->pid, SIGSTOP);
tmp = tmp->next;
}
}
static void
signal_exit(int sig) {
exiting=1;
if (opt_d) {
output_line(0,"Received interrupt signal; exiting...");
}
signal(SIGINT,SIG_IGN);
signal(SIGTERM,SIG_IGN);
signal(SIGALRM,signal_alarm);
if (opt_p) {
struct opt_p_t * tmp = opt_p;
while(tmp) {
if (opt_d>1) {
output_line(0,"Sending SIGSTOP to process %u\n",tmp->pid);
}
kill(tmp->pid, SIGSTOP);
tmp = tmp->next;
}
}
alarm(1);
}
static void
normal_exit(void) {
output_line(0,0);
}
int
main(int argc, char **argv) {
struct opt_p_t * opt_p_tmp;
char * home;
atexit(normal_exit);
signal(SIGINT,signal_exit); /* Detach processes when interrupted */
signal(SIGTERM,signal_exit); /* ... or killed */
argv = process_options(argc, argv);
read_config_file(SYSCONFDIR "/ltrace.conf");
home = getenv("HOME");
if (home) {
char path[PATH_MAX];
if (strlen(home) > PATH_MAX-15) {
fprintf(stderr, "Error: $HOME too long\n");
exit(1);
}
strcpy(path, getenv("HOME"));
strcat(path, "/.ltrace.conf");
read_config_file(path);
}
if (opt_d && opt_e) {
struct opt_e_t * tmp = opt_e;
while(tmp) {
printf("Option -e: %s\n", tmp->name);
tmp = tmp->next;
}
}
if (command) {
execute_program(open_program(command), argv);
}
opt_p_tmp = opt_p;
while (opt_p_tmp) {
open_pid(opt_p_tmp->pid, 1);
opt_p_tmp = opt_p_tmp->next;
}
while(1) {
process_event(wait_for_something());
}
}
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