Adding -s (single shot) and -o (omit pids) options to pidof

1 files changed, 31 insertions, 3 deletions

diff --git a/toys/lsb/pidof.c b/toys/lsb/pidof.c
index 03643015..8aeb33e4 100644
--- a/toys/lsb/pidof.c
+++ b/toys/lsb/pidof.c
@@ -1,26 +1,54 @@
 /* pidof.c - Print the Process IDs of all processes with the given names.
  *
  * Copyright 2012 Andreas Heck <aheck@gmx.de>
+ * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
  *
  * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/pidof.html
 
-USE_PIDOF(NEWTOY(pidof, "<1", TOYFLAG_USR|TOYFLAG_BIN))
+USE_PIDOF(NEWTOY(pidof, "so:<1", TOYFLAG_USR|TOYFLAG_BIN))
 
 config PIDOF
   bool "pidof"
   default y
   help
-    usage: pidof [NAME]...
+    usage: pidof [-s] [-o omitpid[,omitpid..]] [NAME]...
 
     Print the PIDs of all processes with the given names.
+    -s	single shot, only return one pid.
+    -o	omits processes with specified PID
 */
 
+#define FOR_pidof
 #include "toys.h"
 
-static void print_pid(pid_t pid)
+GLOBALS(
+  char *omit;
+)
+
+static int print_pid(pid_t pid)
 {
+
+  if (toys.optflags & FLAG_o)
+  {
+      char * res;
+      int len;
+      snprintf(toybuf, sizeof(toybuf), "%d", pid);
+      len = strlen(toybuf);
+      res = strstr(TT.omit, toybuf);
+      if (res &&
+          (res == TT.omit || res[-1] == ',') &&
+          (res[len] == ',' || res[len] == 0))
+          // Found in omit string
+          return 1;
+  }
+
   xprintf("%s%ld", toys.exitval ? "" : " ", (long)pid);
   toys.exitval = 0;
+
+  if (toys.optflags & FLAG_s)
+      return 0;
+
+  return 1;
 }
 
 void pidof_main(void)