madvise: Support MADV_DONTDUMP and MADV_DODUMP on anonymous map

Change-Id: I231b62ed6803b797ec749ac70a66cdf8236204bd
refs: #1373

kernel/syscall.c

@@ -5383,6 +5383,8 @@ SYSCALL_DECLARE(madvise)
 			}
 		}
 		else if(advice == MADV_DONTFORK || advice == MADV_DOFORK);
+		else if (advice == MADV_DONTDUMP || advice == MADV_DODUMP) {
+		}
 		else if (advice == MADV_NORMAL) {
 			/*
 			 * Normally, the settings of MADV_RANDOM and

test/issues/1373/README

@@ -0,0 +1,23 @@
+/* REDME COPYRIGHT FUJITSU LIMITED 2020 */
+
+ltp: madvise08: MADV_{DONT,DO}DUMPが期待通りに動作しない。
+https://postpeta.pccluster.org/redmine/issues/1373
+
+テストセットREADME
+
+(0) 事前準備
+  1. LTP に madvise08-mck-core-pattern.patch を適用
+  2. LTP のビルド及びインストール
+  3. $HOME/.mck_test_configを用意する
+
+(1) テスト実行方法
+  1. ./run.sh
+
+(2) テスト項目詳細
+
+  LTPの下記項目を実行し期待通りに動作することを確認する
+  "test OK." が書き出されれば合格判定となる。具体例はresult.logを参照。
+  - madvise08
+  - madvise10
+
+以上。

test/issues/1373/madvise08-mck-core-pattern.patch

@@ -0,0 +1,27 @@
+madvise08-mck-core-pattern.patch COPYRIGHT FUJITSU LIMITED 2020
+diff --git a/testcases/kernel/syscalls/madvise/madvise08.c b/testcases/kernel/syscalls/madvise/madvise08.c
+index a6fd967..4cdba31 100644
+--- a/testcases/kernel/syscalls/madvise/madvise08.c
++++ b/testcases/kernel/syscalls/madvise/madvise08.c
+@@ -87,9 +87,9 @@ static void setup(void)
+ 	tst_res(TINFO, "System core pattern is '%s'", cpattern);
+ 
+ 	SAFE_GETCWD(cwd, sizeof(cwd));
+-	snprintf(tmpcpattern, sizeof(tmpcpattern), "%s/dump-%%p", cwd);
+-	tst_res(TINFO, "Temporary core pattern is '%s'", tmpcpattern);
+-	SAFE_FILE_PRINTF(CORE_PATTERN, "%s", tmpcpattern);
++	snprintf(tmpcpattern, sizeof(tmpcpattern), "%s/mccore-madvise08.%%p", cwd);
++	tst_res(TINFO, "McKernel core pattern is '%s'", tmpcpattern);
++	//SAFE_FILE_PRINTF(CORE_PATTERN, "%s", tmpcpattern);
+ 
+ 	fmem = SAFE_MMAP(NULL,
+ 			 FMEMSIZE,
+@@ -129,7 +129,7 @@ static int find_sequence(int pid)
+ 	int ycount = 0;
+ 	char dumpname[256];
+ 
+-	snprintf(dumpname, 256, "dump-%d", pid);
++	snprintf(dumpname, 256, "mccore-madvise08.%d", pid);
+ 	tst_res(TINFO, "Dump file should be %s", dumpname);
+ 	if (access(dumpname, F_OK))
+ 		tst_brk(TBROK | TERRNO, "Dump file was not found.");

test/issues/1373/result.log

@@ -0,0 +1,42 @@
+[root@hostname 1373]# ./run.sh
+mcstop+release.sh ... done
+mcreboot.sh -c 12-59 -m 512M@4 ... done
+test run.
+tst_test.c:1096: INFO: Timeout per run is 0h 05m 00s
+madvise08.c:87: INFO: System core pattern is '|/usr/lib/systemd/systemd-coredump'
+madvise08.c:91: INFO: McKernel core pattern is '/tmp/l2JnVb/mccore-madvise08.%p'
+madvise08.c:133: INFO: Dump file should be mccore-madvise08.17555
+madvise08.c:217: PASS: madvise(..., MADV_DONTDUMP)
+madvise08.c:133: INFO: Dump file should be mccore-madvise08.17606
+madvise08.c:221: PASS: madvise(..., MADV_DODUMP)
+
+Summary:
+passed   2
+failed   0
+skipped  0
+warnings 0
+tst_test.c:1096: INFO: Timeout per run is 0h 05m 00s
+madvise10.c:143: INFO: MADV_WIPEONFORK zeroes memory in child
+madvise10.c:117: PASS: madvise(0x1000001c0000, 16384, 0x0)
+madvise10.c:117: PASS: madvise(0x1000001c0000, 16384, 0x12)
+madvise10.c:98: PASS: In PID 17758, Matched expected pattern
+madvise10.c:143: INFO: MADV_WIPEONFORK with zero length does nothing
+madvise10.c:117: PASS: madvise(0x1000001d0000, 0, 0x0)
+madvise10.c:117: PASS: madvise(0x1000001d0000, 0, 0x12)
+madvise10.c:98: PASS: In PID 17808, Matched expected pattern
+madvise10.c:143: INFO: MADV_WIPEONFORK zeroes memory in grand-child
+madvise10.c:117: PASS: madvise(0x1000001e0000, 16384, 0x0)
+madvise10.c:117: PASS: madvise(0x1000001e0000, 16384, 0x12)
+madvise10.c:98: PASS: In PID 17908, Matched expected pattern
+madvise10.c:143: INFO: MADV_KEEPONFORK will undo MADV_WIPEONFORK
+madvise10.c:117: PASS: madvise(0x1000001f0000, 16384, 0x12)
+madvise10.c:117: PASS: madvise(0x1000001f0000, 16384, 0x13)
+madvise10.c:98: PASS: In PID 17958, Matched expected pattern
+
+Summary:
+passed   12
+failed   0
+skipped  0
+warnings 0
+test OK.
+mcstop+release.sh ... done

test/issues/1373/run.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# run.sh COPYRIGHT FUJITSU LIMITED 2020
+
+# load setting and booting mck.
+USELTP=1
+. ../../common.sh
+chmod 777 /dev/mcos*
+
+echo "test run."
+ltp=`cat <<__EOL__
+madvise08
+madvise10
+__EOL__`
+
+FAIL=0
+for tp in $ltp
+do
+	pushd ${LTPBIN} > /dev/null
+	${MCEXEC} ${LTPBIN}/${tp}
+	if [ $? -ne 0 ]; then
+		FAIL=1
+	fi
+	popd > /dev/null
+done
+
+if [ ${FAIL} -eq 1 ]; then
+	echo "test NG."
+else
+	echo "test OK."
+fi
+
+mcstop