static void
check(int pid)
{
if (execname && !pid_is_exec(pid, execname)) {
return;
}
if (userspec && !pid_is_user(pid, user_id)) {
return;
}
if (cmdname && !pid_is_cmd(pid, cmdname)) {
return;
}
push(pid);
}
static void check(int pid)
{
struct pid_list *p;
if (execname && !pid_is_exec(pid)) {
return;
}
if (cmdname && !pid_is_name(pid)) {
return;
}
if (userspec && !pid_is_user(pid)) {
return;
}
p = xmalloc(sizeof(*p));
p->next = G.found_procs;
p->pid = pid;
G.found_procs = p;
}
RC_PIDLIST *
rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
{
DIR *procdir;
struct dirent *entry;
FILE *fp;
bool container_pid = false;
bool openvz_host = false;
char *line = NULL;
size_t len = 0;
pid_t p;
char buffer[PATH_MAX];
struct stat sb;
pid_t runscript_pid = 0;
char *pp;
RC_PIDLIST *pids = NULL;
RC_PID *pi;
if ((procdir = opendir("/proc")) == NULL)
return NULL;
/*
We never match RC_RUNSCRIPT_PID if present so we avoid the below
scenario
/etc/init.d/ntpd stop does
start-stop-daemon --stop --name ntpd
catching /etc/init.d/ntpd stop
nasty
*/
if ((pp = getenv("RC_RUNSCRIPT_PID"))) {
if (sscanf(pp, "%d", &runscript_pid) != 1)
runscript_pid = 0;
}
/*
If /proc/self/status contains EnvID: 0, then we are an OpenVZ host,
and we will need to filter out processes that are inside containers
from our list of pids.
*/
if (exists("/proc/self/status")) {
fp = fopen("/proc/self/status", "r");
if (fp) {
while (! feof(fp)) {
rc_getline(&line, &len, fp);
if (strncmp(line, "envID:\t0", 8) == 0) {
openvz_host = true;
break;
}
}
fclose(fp);
}
}
while ((entry = readdir(procdir)) != NULL) {
if (sscanf(entry->d_name, "%d", &p) != 1)
continue;
if (runscript_pid != 0 && runscript_pid == p)
continue;
if (pid != 0 && pid != p)
continue;
if (uid) {
snprintf(buffer, sizeof(buffer), "/proc/%d", p);
if (stat(buffer, &sb) != 0 || sb.st_uid != uid)
continue;
}
if (exec && !pid_is_exec(p, exec))
continue;
if (argv &&
!pid_is_argv(p, (const char *const *)argv))
continue;
/* If this is an OpenVZ host, filter out container processes */
if (openvz_host) {
snprintf(buffer, sizeof(buffer), "/proc/%d/status", p);
if (exists(buffer)) {
fp = fopen(buffer, "r");
if (! fp)
continue;
while (! feof(fp)) {
rc_getline(&line, &len, fp);
if (strncmp(line, "envID:", 6) == 0) {
container_pid = ! (strncmp(line, "envID:\t0", 8) == 0);
break;
}
}
fclose(fp);
}
}
if (container_pid)
continue;
if (!pids) {
pids = xmalloc(sizeof(*pids));
LIST_INIT(pids);
}
pi = xmalloc(sizeof(*pi));
pi->pid = p;
LIST_INSERT_HEAD(pids, pi, entries);
}
if (line != NULL)
free(line);
closedir(procdir);
return pids;
}
