/*
* Send a signal.
*
* The behavior is different for the pid value.
*
* if (pid > 0)
* Send a signal to specific process.
*
* if (pid == 0)
* Send a signal to all processes in same process group.
*
* if (pid == -1)
* Send a signal to all processes except init.
*
* if (pid < -1)
* Send a signal to the process group.
*
* Note: Need CAP_KILL capability to send a signal to the different
* process/group.
*/
int
sys_kill(pid_t pid, int sig)
{
struct proc *p;
list_t n;
int error = 0;
DPRINTF(("proc: kill pid=%d sig=%d\n", pid, sig));
switch (sig) {
case SIGFPE:
case SIGILL:
case SIGSEGV:
return EINVAL;
}
if (pid > 0) {
if (pid != curproc->p_pid && !kill_capable()) {
DPRINTF(("proc: EPERM\n"));
return EPERM;
}
error = kill_one(pid, sig);
}
else if (pid == -1) {
DPRINTF(("proc: kill? curproc=%x\n", curproc));
if (!kill_capable())
return EPERM;
DPRINTF(("proc: kill all!\n"));
for (n = list_first(&allproc); n != &allproc;
n = list_next(n)) {
p = list_entry(n, struct proc, p_link);
/*
* We don't send a signal to the following processes.
*
* pid=0 - process server
* pid=1 - init process
* curproc - current process (sleeping in msg_send)
*/
if (p->p_pid != 0 && p->p_pid != 1 &&
p->p_pid != curproc->p_pid)
{
error = kill_one(p->p_pid, sig);
if (error != 0)
break;
}
}
}
int
panic(pink_easy_process_t *current)
{
unsigned count;
pink_easy_process_list_t *list = pink_easy_context_get_process_list(pandora->ctx);
switch (pandora->config.panic_decision) {
case PANIC_KILL:
warning("panic! killing the guilty process");
kill_one(current, UINT_TO_PTR(1));
return PINK_EASY_CFLAG_DROP;
case PANIC_CONT:
warning("panic! resuming the guilty process");
cont_one(current, UINT_TO_PTR(1));
return PINK_EASY_CFLAG_DROP;
case PANIC_CONTALL:
warning("panic! resuming all processes");
count = pink_easy_process_list_walk(list, cont_one, UINT_TO_PTR(1));
warning("resumed %u process%s, exiting", count, count > 1 ? "es" : "");
break;
case PANIC_KILLALL:
warning("panic! killing all processes");
count = pink_easy_process_list_walk(list, kill_one, UINT_TO_PTR(1));
warning("killed %u process%s, exiting", count, count > 1 ? "es" : "");
break;
default:
abort();
}
/* exit */
exit(pandora->config.panic_exit_code > 0 ? pandora->config.panic_exit_code : pandora->exit_code);
}
static void
kill_dir(const char *dirname)
{
struct entry *ents;
int maxents;
int curents = 0;
DIR *dir;
struct dirent *dp;
int i;
fprintf(verbose, "reading %s\n", dirname);
dir = opendir(".");
if (dir == NULL)
err(1, "opendir %s", dirname);
maxents = 10;
ents = malloc(sizeof(*ents) * maxents);
if (ents == NULL)
err(1, "malloc");
while ((dp = readdir(dir)) != NULL) {
if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
continue;
if (curents >= maxents) {
maxents *= 2;
ents = realloc(ents, sizeof(*ents) * maxents);
if (ents == NULL)
err(1, "realloc");
}
ents[curents].name = strdup(dp->d_name);
ents[curents].status = 1;
++curents;
fprintf(verbose, " adding %s\n", dp->d_name);
}
closedir(dir);
dir = opendir(".");
if (dir == NULL)
err(1, "opendir %s", dirname);
i = 0;
while ((dp = readdir(dir)) != NULL) {
if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
continue;
if (strcmp(ents[i].name, dp->d_name) != 0) {
errx(1, "%s != %s", ents[i].name, dp->d_name);
}
fprintf(verbose, " deleting %s\n", ents[i].name);
kill_one(ents, i, curents);
++i;
}
if (i != curents)
errx(1, "missing %d entries in %s", curents - i, dirname);
closedir(dir);
free(ents);
fprintf(verbose, "end of %s\n", dirname);
}
/*
* Send a signal.
*
* The behavior is different for the pid value.
*
* if (pid > 0)
* Send a signal to specific process.
*
* if (pid == 0)
* Send a signal to all processes in same process group.
*
* if (pid == -1)
* Send a signal to all processes except init.
*
* if (pid < -1)
* Send a signal to the process group.
*
* Note: Need CAP_KILL capability to send a signal to the different
* process/group.
*/
int
proc_kill(struct msg *msg)
{
pid_t pid;
struct proc *p;
list_t n;
int sig, capable = 0;
int err = 0;
pid = (pid_t)msg->data[0];
sig = msg->data[1];
DPRINTF(("proc: kill pid=%d sig=%d\n", pid, sig));
switch (sig) {
case SIGFPE:
case SIGILL:
case SIGSEGV:
return EINVAL;
}
if (curproc->p_cap & CAP_KILL)
capable = 1;
if (pid > 0) {
if (pid != curproc->p_pid && !capable)
return EPERM;
err = kill_one(pid, sig);
}
else if (pid == -1) {
if (!capable)
return EPERM;
for (n = list_first(&allproc); n != &allproc;
n = list_next(n)) {
p = list_entry(n, struct proc, p_link);
if (p->p_pid != 0 && p->p_pid != 1) {
err = kill_one(p->p_pid, sig);
if (err != 0)
break;
}
}
}
else if (pid == 0) {
void PlayerTank::fire()
{
// 向pool关送命令
PlayerBullet *bullet = new PlayerBullet();
bullet->setRotation(this->rotation());
bullet->setPos(mapToScene(0,
0 + boundingRect().height()
)
);
bullet->setTeam(getTeam());
QObject::connect(bullet, SIGNAL(signal_bullet_kill_one()), this, SLOT(kill_one()));
this->scene()->addItem(bullet);
}
static void
kill_dir(const char *dirname)
{
DIR *dir;
struct dirent *dp;
dir = opendir(".");
if (dir == NULL)
err(1, "opendir %s", dirname);
while ((dp = readdir(dir)) != NULL) {
if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
continue;
kill_one(dp->d_name);
}
closedir(dir);
}
int
violation(pink_easy_process_t *current, const char *fmt, ...)
{
unsigned count;
va_list ap;
pink_easy_process_list_t *list = pink_easy_context_get_process_list(pandora->ctx);
pandora->violation = true;
va_start(ap, fmt);
report(current, fmt, ap);
va_end(ap);
switch (pandora->config.violation_decision) {
case VIOLATION_DENY:
return 0; /* Let the caller handle this */
case VIOLATION_KILL:
warning("killing the guilty process");
kill_one(current, UINT_TO_PTR(1));
return PINK_EASY_CFLAG_DROP;
case VIOLATION_CONT:
warning("resuming the guilty process");
cont_one(current, UINT_TO_PTR(1));
return PINK_EASY_CFLAG_DROP;
case VIOLATION_CONTALL:
warning("resuming all processes");
count = pink_easy_process_list_walk(list, cont_one, UINT_TO_PTR(1));
warning("resumed %u processes, exiting", count);
break;
case VIOLATION_KILLALL:
warning("killing all processes");
count = pink_easy_process_list_walk(list, kill_one, UINT_TO_PTR(1));
warning("killed %u processes, exiting", count);
break;
default:
abort();
}
/* exit */
if (pandora->config.violation_exit_code > 0)
exit(pandora->config.violation_exit_code);
else if (!pandora->config.violation_exit_code)
exit(128 + pandora->config.violation_exit_code);
exit(pandora->exit_code);
}
static void
kill_dir(const char *dirname)
{
struct entry *ents;
int maxents;
int curents = 0;
DIR *dir;
struct dirent *dp;
int i;
dir = opendir(".");
if (dir == NULL)
err(1, "opendir %s", dirname);
maxents = 10;
ents = malloc(sizeof(*ents) * maxents);
if (ents == NULL)
err(1, "malloc");
while ((dp = readdir(dir)) != NULL) {
if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
continue;
if (curents >= maxents) {
maxents *= 2;
ents = realloc(ents, sizeof(*ents) * maxents);
if (ents == NULL)
err(1, "realloc");
}
ents[curents].name = strdup(dp->d_name);
ents[curents].status = 1;
++curents;
}
closedir(dir);
for (i = 0; i < curents; ++i)
kill_one(ents, i, curents);
free(ents);
}
