don't display firejail --list/--tree/--top processes in firemon stats

src/firemon/firemon.c

@@ -25,6 +25,7 @@
 #include <grp.h>
 #include <sys/stat.h>
 
+pid_t skip_process = 0;
 static int arg_route = 0;
 static int arg_arp = 0;
 static int arg_tree = 0;
@@ -217,6 +218,13 @@ int main(int argc, char **argv) {
  }
  }
 
+
+ // if the parent is firejail, skip the process
+ pid_t ppid = getppid();
+ char *pcomm = pid_proc_comm(ppid);
+ if (pcomm && strcmp(pcomm, "firejail") == 0)
+ skip_process = ppid;
+
  // allow only root user if /proc is mounted hidepid
  if (pid_hidepid() && getuid() != 0) {
  fprintf(stderr, "Error: /proc is mounted hidepid, you would need to be root to run this command\n");

src/firemon/firemon.h

@@ -36,6 +36,7 @@ static inline void firemon_clrscr(void) {
 }
 
 // firemon.c
+extern pid_t skip_process;
 extern int arg_nowrap;
 int find_child(int id);
 void firemon_sleep(int st);

src/firemon/list.c

@@ -25,6 +25,8 @@ void list(void) {
  // print processes
  int i;
  for (i = 0; i < max_pids; i++) {
+ if (i == skip_process)
+ continue;
  if (pids[i].level == 1)
  pid_print_list(i, arg_nowrap);
  }

src/firemon/top.c

@@ -273,6 +273,8 @@ void top(void) {
  unsigned utime = 0;
  unsigned stime = 0;
  for (i = 0; i < max_pids; i++) {
+ if (i == skip_process)
+ continue;
  if (pids[i].level == 1)
  pid_store_cpu(i, 0, &utime, &stime);
  }
@@ -313,6 +315,8 @@ void top(void) {
 
  // print processes
  for (i = 0; i < max_pids; i++) {
+ if (i == skip_process)
+ continue;
  if (pids[i].level == 1) {
  float cpu = 0;
  int cnt = 0; // process count

src/firemon/tree.c

@@ -25,6 +25,8 @@ void tree(pid_t pid) {
  // print processes
  int i;
  for (i = 0; i < max_pids; i++) {
+ if (i == skip_process)
+ continue;
  if (pids[i].level == 1)
  pid_print_tree(i, 0, arg_nowrap);
  }