pctl List procs by name

user/pctl/ls.c

@@ -7,6 +7,18 @@
 #include <uprintf.h>
 #include <string/string.h>
 #include <dlmalloc/malloc.h>
+#include <args/args.h>
+#include "ls.h"
+#include "macros.h"
+
+struct {
+  char *specificproc;
+} PCTL_LS_CONFIG;
+
+static Arg ARGS[] = {
+  ARG("-proc", ARG_STRING, &PCTL_LS_CONFIG.specificproc),
+  ARG_END(),
+};
 
 const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
   static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
@@ -41,6 +53,12 @@ const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
   
   
 void pctl_ls(void) {
+  int32_t ret;
+  if ((ret = parse_args(SUBCMD_ARGS(), SUBCMD_ARGSLEN(), ARGS)) < 0) {
+    uprintf("pctl ls: Could not parse args: %d\n", ret);
+    return;
+  }
+
   static const char *states[] = {"embryo", "ready", "zombie", "waiting", "died"};
 
   uint64_t procslen = processctl(-1, PCTL_PLS_SZ, 0, 0, 0);
@@ -57,6 +75,11 @@ void pctl_ls(void) {
 
     int32_t r = processctl(-1, PCTL_PLS_STAT, i, (uint64_t)&stat, 0);
     if (r == E_OK) {
+      if (PCTL_LS_CONFIG.specificproc != NULL
+       && string_strcmp(stat.name, PCTL_LS_CONFIG.specificproc) != 0) {
+        continue;
+      }
+
       string_memcpy(namebuf, stat.name, 30);
       namebuf[31] = namebuf[32] = namebuf[33] = '.';
 

user/pctl/macros.h

@@ -0,0 +1,7 @@
+#ifndef PCTL_MACROS_H_
+#define PCTL_MACROS_H_
+
+#define SUBCMD_ARGS() (args()+1)
+#define SUBCMD_ARGSLEN() (argslen()-1)
+
+#endif // PCTL_MACROS_H_