claenups for previous commit

[oweals/busybox.git] / procps / pidof.c

diff --git a/procps/pidof.c b/procps/pidof.c
index bf5e7841aad8c61ac1b6e466db273beb38279fe6..98d7949f825f56184f833025722a5e1f65edbd8d 100644 (file)
--- a/procps/pidof.c
+++ b/procps/pidof.c
@@ -4,8 +4,66 @@
  *
  * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
  *
- * Licensed under the GPL version 2, see the file LICENSE in this tarball.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
  */
+//config:config PIDOF
+//config:      bool "pidof (6.6 kb)"
+//config:      default y
+//config:      help
+//config:      Pidof finds the process id's (pids) of the named programs. It prints
+//config:      those id's on the standard output.
+//config:
+//config:config FEATURE_PIDOF_SINGLE
+//config:      bool "Enable single shot (-s)"
+//config:      default y
+//config:      depends on PIDOF
+//config:      help
+//config:      Support '-s' for returning only the first pid found.
+//config:
+//config:config FEATURE_PIDOF_OMIT
+//config:      bool "Enable omitting pids (-o PID)"
+//config:      default y
+//config:      depends on PIDOF
+//config:      help
+//config:      Support '-o PID' for omitting the given pid(s) in output.
+//config:      The special pid %PPID can be used to name the parent process
+//config:      of the pidof, in other words the calling shell or shell script.
+
+//applet:IF_PIDOF(APPLET(pidof, BB_DIR_BIN, BB_SUID_DROP))
+/* can't be noexec: can find _itself_ under wrong name, since after fork only,
+ * /proc/PID/cmdline and comm are wrong! Can fix comm (prctl(PR_SET_NAME)),
+ * but cmdline?
+ */
+
+//kbuild:lib-$(CONFIG_PIDOF) += pidof.o
+
+//usage:#if (ENABLE_FEATURE_PIDOF_SINGLE || ENABLE_FEATURE_PIDOF_OMIT)
+//usage:#define pidof_trivial_usage
+//usage:       "[OPTIONS] [NAME]..."
+//usage:#define USAGE_PIDOF "\n"
+//usage:#else
+//usage:#define pidof_trivial_usage
+//usage:       "[NAME]..."
+//usage:#define USAGE_PIDOF /* none */
+//usage:#endif
+//usage:#define pidof_full_usage "\n\n"
+//usage:       "List PIDs of all processes with names that match NAMEs"
+//usage:       USAGE_PIDOF
+//usage:       IF_FEATURE_PIDOF_SINGLE(
+//usage:     "\n       -s      Show only one PID"
+//usage:       )
+//usage:       IF_FEATURE_PIDOF_OMIT(
+//usage:     "\n       -o PID  Omit given pid"
+//usage:     "\n               Use %PPID to omit pid of pidof's parent"
+//usage:       )
+//usage:
+//usage:#define pidof_example_usage
+//usage:       "$ pidof init\n"
+//usage:       "1\n"
+//usage:       IF_FEATURE_PIDOF_OMIT(
+//usage:       "$ pidof /bin/sh\n20351 5973 5950\n")
+//usage:       IF_FEATURE_PIDOF_OMIT(
+//usage:       "$ pidof /bin/sh -o %PPID\n20351 5950")
 
 #include "libbb.h"
 
@@ -23,13 +81,12 @@ int pidof_main(int argc UNUSED_PARAM, char **argv)
        unsigned opt;
 #if ENABLE_FEATURE_PIDOF_OMIT
        llist_t *omits = NULL; /* list of pids to omit */
-       opt_complementary = "o::";
 #endif
 
        /* do unconditional option parsing */
        opt = getopt32(argv, ""
                        IF_FEATURE_PIDOF_SINGLE ("s")
-                       IF_FEATURE_PIDOF_OMIT("o:", &omits));
+                       IF_FEATURE_PIDOF_OMIT("o:*", &omits));
 
 #if ENABLE_FEATURE_PIDOF_OMIT
        /* fill omit list.  */