static SIGRETTYPE ctl_c(int sig)
{
tty_reset(tty_fd);
sys_sigset(sig, orig_ctl_c); /* Set ctl_c break handler to original */
sys_sigrelease(sig); /* Allow 'sig' to come through */
kill(getpid(), sig); /* Send ourselves the signal */
sys_sigblock(sig); /* Reset to old mask */
sys_sigset(sig, ctl_c); /* Reset signal handler */
tty_set(tty_fd);
}
static SIGRETTYPE suspend(int sig)
{
tty_reset(tty_fd);
sys_sigset(sig, SIG_DFL); /* Set signal handler to default */
sys_sigrelease(sig); /* Allow 'sig' to come through */
kill(getpid(), sig); /* Send ourselves the signal */
sys_sigblock(sig); /* Reset to old mask */
sys_sigset(sig, suspend); /* Reset signal handler */
tty_set(tty_fd);
}
int
main(int argc, char *argv[])
{
int i, from, to;
int erts_spawn_executable = 0;
/* OBSERVE!
* Keep child setup after fork() (implemented in sys.c) up to date
* if changes are made here.
*/
if (argc != CS_ARGV_NO_OF_ARGS) {
if (argc < CS_ARGV_NO_OF_ARGS) {
return 1;
} else {
erts_spawn_executable = 1;
}
}
if (strcmp("false", argv[CS_ARGV_UNBIND_IX]) != 0)
if (erts_unbind_from_cpu_str(argv[CS_ARGV_UNBIND_IX]) != 0)
return 1;
for (i = 0; i < CS_ARGV_NO_OF_DUP2_OPS; i++) {
if (argv[CS_ARGV_DUP2_OP_IX(i)][0] == '-'
&& argv[CS_ARGV_DUP2_OP_IX(i)][1] == '\0')
break;
if (sscanf(argv[CS_ARGV_DUP2_OP_IX(i)], "%d:%d", &from, &to) != 2)
return 1;
if (dup2(from, to) < 0)
return 1;
}
if (sscanf(argv[CS_ARGV_FD_CR_IX], "%d:%d", &from, &to) != 2)
return 1;
#if defined(HAVE_CLOSEFROM)
closefrom(from);
#elif defined(__ANDROID__)
if (from <= to) {
int spfd = system_properties_fd();
for (i = from; i <= to; i++) {
if (i != spfd) {
(void) close(i);
}
}
}
#else /* !__ANDROID__ */
for (i = from; i <= to; i++) {
(void) close(i);
}
#endif /* HAVE_CLOSEFROM */
if (!(argv[CS_ARGV_WD_IX][0] == '.' && argv[CS_ARGV_WD_IX][1] == '\0')
&& chdir(argv[CS_ARGV_WD_IX]) < 0)
return 1;
#if defined(USE_SETPGRP_NOARGS) /* SysV */
(void) setpgrp();
#elif defined(USE_SETPGRP) /* BSD */
(void) setpgrp(0, getpid());
#else /* POSIX */
(void) setsid();
#endif
sys_sigrelease(SIGCHLD);
sys_sigrelease(SIGINT);
sys_sigrelease(SIGUSR1);
if (erts_spawn_executable) {
if (argv[CS_ARGV_NO_OF_ARGS + 1] == NULL) {
execl(argv[CS_ARGV_NO_OF_ARGS],argv[CS_ARGV_NO_OF_ARGS],
(char *) NULL);
} else {
execv(argv[CS_ARGV_NO_OF_ARGS],&(argv[CS_ARGV_NO_OF_ARGS + 1]));
}
} else {
execl(SHELL, "sh", "-c", argv[CS_ARGV_CMD_IX], (char *) NULL);
}
return 1;
}
