84d5eddb25
function old new delta packed_usage 33620 33665 +45 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* pidof implementation for busybox
|
|
*
|
|
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config PIDOF
|
|
//config: bool "pidof (6.3 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-$(CONFIG_PIDOF) += pidof.o
|
|
|
|
//usage:#if (ENABLE_FEATURE_PIDOF_SINGLE || ENABLE_FEATURE_PIDOF_OMIT)
|
|
//usage:#define pidof_trivial_usage
|
|
//usage: IF_FEATURE_PIDOF_SINGLE("[-s] ")IF_FEATURE_PIDOF_OMIT("[-o PID] ")"[NAME]..."
|
|
//usage:#define USAGE_PIDOF "\n"
|
|
//usage:#else
|
|
//usage:#define pidof_trivial_usage
|
|
//usage: "[NAME]..."
|
|
//usage:#define USAGE_PIDOF /* none */
|
|
//usage:#endif
|
|
//usage:#define pidof_full_usage "\n\n"
|
|
//usage: "List PIDs of all processes with names that match NAMEs"
|
|
//usage: USAGE_PIDOF
|
|
//usage: IF_FEATURE_PIDOF_SINGLE(
|
|
//usage: "\n -s Show only one PID"
|
|
//usage: )
|
|
//usage: IF_FEATURE_PIDOF_OMIT(
|
|
//usage: "\n -o PID Omit given pid"
|
|
//usage: "\n Use %PPID to omit pid of pidof's parent"
|
|
//usage: )
|
|
//usage:
|
|
//usage:#define pidof_example_usage
|
|
//usage: "$ 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"
|
|
|
|
enum {
|
|
IF_FEATURE_PIDOF_SINGLE(OPTBIT_SINGLE,)
|
|
IF_FEATURE_PIDOF_OMIT( OPTBIT_OMIT ,)
|
|
OPT_SINGLE = IF_FEATURE_PIDOF_SINGLE((1<<OPTBIT_SINGLE)) + 0,
|
|
OPT_OMIT = IF_FEATURE_PIDOF_OMIT( (1<<OPTBIT_OMIT )) + 0,
|
|
};
|
|
|
|
int pidof_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int pidof_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
unsigned first = 1;
|
|
unsigned opt;
|
|
#if ENABLE_FEATURE_PIDOF_OMIT
|
|
llist_t *omits = NULL; /* list of pids to omit */
|
|
#endif
|
|
|
|
/* do unconditional option parsing */
|
|
opt = getopt32(argv, ""
|
|
IF_FEATURE_PIDOF_SINGLE ("s")
|
|
IF_FEATURE_PIDOF_OMIT("o:*", &omits));
|
|
|
|
#if ENABLE_FEATURE_PIDOF_OMIT
|
|
/* fill omit list. */
|
|
{
|
|
llist_t *omits_p = omits;
|
|
while (1) {
|
|
omits_p = llist_find_str(omits_p, "%PPID");
|
|
if (!omits_p)
|
|
break;
|
|
/* are we asked to exclude the parent's process ID? */
|
|
omits_p->data = utoa((unsigned)getppid());
|
|
}
|
|
}
|
|
#endif
|
|
/* Looks like everything is set to go. */
|
|
argv += optind;
|
|
while (*argv) {
|
|
pid_t *pidList;
|
|
pid_t *pl;
|
|
|
|
/* reverse the pidlist like GNU pidof does. */
|
|
pidList = pidlist_reverse(find_pid_by_name(*argv));
|
|
for (pl = pidList; *pl; pl++) {
|
|
#if ENABLE_FEATURE_PIDOF_OMIT
|
|
if (opt & OPT_OMIT) {
|
|
llist_t *omits_p = omits;
|
|
while (omits_p) {
|
|
if (xatoul(omits_p->data) == (unsigned long)(*pl)) {
|
|
goto omitting;
|
|
}
|
|
omits_p = omits_p->link;
|
|
}
|
|
}
|
|
#endif
|
|
printf(" %u" + first, (unsigned)*pl);
|
|
first = 0;
|
|
if (ENABLE_FEATURE_PIDOF_SINGLE && (opt & OPT_SINGLE))
|
|
break;
|
|
#if ENABLE_FEATURE_PIDOF_OMIT
|
|
omitting: ;
|
|
#endif
|
|
}
|
|
free(pidList);
|
|
argv++;
|
|
}
|
|
if (!first)
|
|
bb_putchar('\n');
|
|
|
|
#if ENABLE_FEATURE_PIDOF_OMIT
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
llist_free(omits, NULL);
|
|
#endif
|
|
return first; /* 1 (failure) - no processes found */
|
|
}
|