From 12d9419273c04dcdf2557f0263d69633c60b6a60 Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Fri, 30 Jun 2006 22:20:43 +0000
Subject: [PATCH] Revert taskset for 1.2.0.  It emits a warning, breaks
 building under RH9, and nobody seemed interested in fixing it despite
 repeated complaints. I'll worry about it in the 1.3 timeframe...

---
 include/applets.h       |  1 -
 include/usage.h         | 17 -----------
 miscutils/Config.in     |  6 ++++
 miscutils/Makefile.in   |  1 -
 miscutils/taskset.c     | 67 -----------------------------------------
 testsuite/taskset.tests | 17 -----------
 6 files changed, 6 insertions(+), 103 deletions(-)
 delete mode 100644 miscutils/taskset.c
 delete mode 100755 testsuite/taskset.tests

diff --git a/include/applets.h b/include/applets.h
index 3acb3ba53..f07d005cb 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -262,7 +262,6 @@ USE_BB_SYSCTL(APPLET(sysctl, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_SYSLOGD(APPLET(syslogd, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_TAIL(APPLET(tail, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_TAR(APPLET(tar, _BB_DIR_BIN, _BB_SUID_NEVER))
-USE_TASKSET(APPLET(taskset, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_TEE(APPLET(tee, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_TELNET(APPLET(telnet, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_TELNETD(APPLET(telnetd, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
diff --git a/include/usage.h b/include/usage.h
index 9d890930f..3e957092a 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2967,23 +2967,6 @@ USE_FEATURE_START_STOP_DAEMON_FANCY( \
 	"$ zcat /tmp/tarball.tar.gz | tar -xf -\n" \
 	"$ tar -cf /tmp/tarball.tar /usr/local\n"
 
-#define taskset_trivial_usage \
-	"[OPTIONS] [mask] [pid | command [arg]...]"
-#define taskset_full_usage \
-	"Set or get CPU affinity.\n\n" \
-	"Options:\n" \
-	"\t-p\toperate on an existing PID"
-#define taskset_example_usage \
-	"$ taskset 0x7 ./dgemm_test&\n" \
-	"$ taskset -p 0x1 $!\n" \
-	"pid 4790's current affinity mask: 7\n" \
-	"pid 4790's new affinity mask: 1\n" \
-	"$ taskset 0x7 /bin/sh -c './taskset -p 0x1 $$'\n" \
-	"pid 6671's current affinity mask: 1\n" \
-	"pid 6671's new affinity mask: 1\n" \
-	"$ taskset -p 1\n"
-	"pid 1's current affinity mask: 3\n"
-
 #define tee_trivial_usage \
 	"[OPTION]... [FILE]..."
 #define tee_full_usage \
diff --git a/miscutils/Config.in b/miscutils/Config.in
index 75a48c879..2d60fb65e 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -311,6 +311,12 @@ config CONFIG_TASKSET
 	help
 	  Retrieve or set a processes's CPU affinity
 
+config CONFIG_TASKSET
+	bool "taskset"
+	default n
+	help
+	  Retrieve or set a processes's CPU affinity (on linux)
+
 config CONFIG_TIME
 	bool "time"
 	default n
diff --git a/miscutils/Makefile.in b/miscutils/Makefile.in
index d60d687b0..a0b6b7233 100644
--- a/miscutils/Makefile.in
+++ b/miscutils/Makefile.in
@@ -28,7 +28,6 @@ MISCUTILS-$(CONFIG_RUNLEVEL)    += runlevel.o
 MISCUTILS-$(CONFIG_RX)          += rx.o
 MISCUTILS-$(CONFIG_SETSID)      += setsid.o
 MISCUTILS-$(CONFIG_STRINGS)     += strings.o
-MISCUTILS-$(CONFIG_TASKSET)     += taskset.o
 MISCUTILS-$(CONFIG_TIME)        += time.o
 MISCUTILS-$(CONFIG_WATCHDOG)    += watchdog.o
 
diff --git a/miscutils/taskset.c b/miscutils/taskset.c
deleted file mode 100644
index a72f3ff53..000000000
--- a/miscutils/taskset.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * taskset - retrieve or set a processes's CPU affinity
- * Copyright (c) 2006 Bernhard Fischer
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#include "busybox.h"
-#include <sched.h>
-#include <unistd.h>
-#include <getopt.h> /* optind */
-
-int taskset_main(int argc, char** argv)
-{
-	cpu_set_t mask, new_mask;
-	pid_t pid = 0;
-	unsigned long ul;
-	const char *state = "current\0new";
-	char *p_opt = NULL, *aff = NULL;
-
-	ul = bb_getopt_ulflags(argc, argv, "+p:", &p_opt);
-#define TASKSET_OPT_p (1)
-
-	if (ul & TASKSET_OPT_p) {
-		if (argc == optind+1) { /* -p <aff> <pid> */
-			aff = p_opt;
-			p_opt = argv[optind];
-		}
-		argv += optind; /* me -p <arg> */
-		pid = bb_xgetularg10_bnd(p_opt, 1, ULONG_MAX); /* -p <pid> */
-	} else
-		aff = *++argv; /* <aff> <cmd...> */
-	if (aff) {
-/*		to_cpuset(bb_xgetularg_bnd(aff, 16, 1, ULONG_MAX), &new_mask); */
-		unsigned i = 0;
-		unsigned long l = bb_xgetularg_bnd(aff, 16, 1, ULONG_MAX);
-
-		CPU_ZERO(&new_mask);
-		while (i < CPU_SETSIZE && l >= (1<<i)) {
-			if ((1<<i) & l)
-				CPU_SET(i, &new_mask);
-			++i;
-		}
-	}
-
-	if (ul & TASKSET_OPT_p) {
-print_aff:
-		if (sched_getaffinity(pid, sizeof (mask), &mask) < 0)
-			bb_perror_msg_and_die("Failed to %cet pid %d's affinity", 'g', pid);
-		bb_printf("pid %d's %s affinity mask: %x\n", /* %x .. perhaps _FANCY */
-				pid, state, mask);
-		if (!*argv) /* no new affinity given or we did print already, done. */
-			return EXIT_SUCCESS;
-	}
-
-	if (sched_setaffinity(pid, sizeof (new_mask), &new_mask))
-		bb_perror_msg_and_die("Failed to %cet pid %d's affinity", 's', pid);
-	if (ul & TASKSET_OPT_p) {
-		state += 8;
-		++argv;
-		goto print_aff;
-	}
-	++argv;
-	execvp(*argv, argv);
-	bb_perror_msg_and_die("%s", *argv);
-}
diff --git a/testsuite/taskset.tests b/testsuite/taskset.tests
deleted file mode 100755
index 6001c3e32..000000000
--- a/testsuite/taskset.tests
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/sh
-
-# Copyright 2006 Bernhard Fischer
-# Licensed under GPL v2 or later, see file LICENSE for details.
-
-. testing.sh
-a="taskset"
-
-# testing "test name"              "opts" "expected result" "file inp" "stdin"
-testing "taskset (get from pid 1)" "$a -p1 >/dev/null;echo \$?" "0\n" "" ""
-testing "taskset (invalid pid)"    "$a -p0 >/dev/null 2>&1;echo \$?" "1\n" "" ""
-testing "taskset (set_aff, needs CAP_SYS_NICE)" \
-                                   "$a 0x1 $SHELL -c $a\ -p\ \$$\|grep\ \"current\ affinity\ mask:\ 1\" >/dev/null;echo \$?" \
-				                                "0\n" "" ""
-
-unset a
-exit $FAILCOUNT