1 files changed, 0 insertions, 520 deletions
diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c
deleted file mode 100644
index 11b2301f3aa3..000000000000
--- a/tools/testing/selftests/vm/mlock2-tests.c
+++ /dev/null
@@ -1,520 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#define _GNU_SOURCE
-#include <sys/mman.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <stdbool.h>
-#include "mlock2.h"
-
-#include "../kselftest.h"
-
-struct vm_boundaries {
-	unsigned long start;
-	unsigned long end;
-};
-
-static int get_vm_area(unsigned long addr, struct vm_boundaries *area)
-{
-	FILE *file;
-	int ret = 1;
-	char line[1024] = {0};
-	char *end_addr;
-	char *stop;
-	unsigned long start;
-	unsigned long end;
-
-	if (!area)
-		return ret;
-
-	file = fopen("/proc/self/maps", "r");
-	if (!file) {
-		perror("fopen");
-		return ret;
-	}
-
-	memset(area, 0, sizeof(struct vm_boundaries));
-
-	while(fgets(line, 1024, file)) {
-		end_addr = strchr(line, '-');
-		if (!end_addr) {
-			printf("cannot parse /proc/self/maps\n");
-			goto out;
-		}
-		*end_addr = '\0';
-		end_addr++;
-		stop = strchr(end_addr, ' ');
-		if (!stop) {
-			printf("cannot parse /proc/self/maps\n");
-			goto out;
-		}
-		stop = '\0';
-
-		sscanf(line, "%lx", &start);
-		sscanf(end_addr, "%lx", &end);
-
-		if (start <= addr && end > addr) {
-			area->start = start;
-			area->end = end;
-			ret = 0;
-			goto out;
-		}
-	}
-out:
-	fclose(file);
-	return ret;
-}
-
-#define VMFLAGS "VmFlags:"
-
-static bool is_vmflag_set(unsigned long addr, const char *vmflag)
-{
-	char *line = NULL;
-	char *flags;
-	size_t size = 0;
-	bool ret = false;
-	FILE *smaps;
-
-	smaps = seek_to_smaps_entry(addr);
-	if (!smaps) {
-		printf("Unable to parse /proc/self/smaps\n");
-		goto out;
-	}
-
-	while (getline(&line, &size, smaps) > 0) {
-		if (!strstr(line, VMFLAGS)) {
-			free(line);
-			line = NULL;
-			size = 0;
-			continue;
-		}
-
-		flags = line + strlen(VMFLAGS);
-		ret = (strstr(flags, vmflag) != NULL);
-		goto out;
-	}
-
-out:
-	free(line);
-	fclose(smaps);
-	return ret;
-}
-
-#define SIZE "Size:"
-#define RSS  "Rss:"
-#define LOCKED "lo"
-
-static unsigned long get_value_for_name(unsigned long addr, const char *name)
-{
-	char *line = NULL;
-	size_t size = 0;
-	char *value_ptr;
-	FILE *smaps = NULL;
-	unsigned long value = -1UL;
-
-	smaps = seek_to_smaps_entry(addr);
-	if (!smaps) {
-		printf("Unable to parse /proc/self/smaps\n");
-		goto out;
-	}
-
-	while (getline(&line, &size, smaps) > 0) {
-		if (!strstr(line, name)) {
-			free(line);
-			line = NULL;
-			size = 0;
-			continue;
-		}
-
-		value_ptr = line + strlen(name);
-		if (sscanf(value_ptr, "%lu kB", &value) < 1) {
-			printf("Unable to parse smaps entry for Size\n");
-			goto out;
-		}
-		break;
-	}
-
-out:
-	if (smaps)
-		fclose(smaps);
-	free(line);
-	return value;
-}
-
-static bool is_vma_lock_on_fault(unsigned long addr)
-{
-	bool locked;
-	unsigned long vma_size, vma_rss;
-
-	locked = is_vmflag_set(addr, LOCKED);
-	if (!locked)
-		return false;
-
-	vma_size = get_value_for_name(addr, SIZE);
-	vma_rss = get_value_for_name(addr, RSS);
-
-	/* only one page is faulted in */
-	return (vma_rss < vma_size);
-}
-
-#define PRESENT_BIT     0x8000000000000000ULL
-#define PFN_MASK        0x007FFFFFFFFFFFFFULL
-#define UNEVICTABLE_BIT (1UL << 18)
-
-static int lock_check(unsigned long addr)
-{
-	bool locked;
-	unsigned long vma_size, vma_rss;
-
-	locked = is_vmflag_set(addr, LOCKED);
-	if (!locked)
-		return false;
-
-	vma_size = get_value_for_name(addr, SIZE);
-	vma_rss = get_value_for_name(addr, RSS);
-
-	return (vma_rss == vma_size);
-}
-
-static int unlock_lock_check(char *map)
-{
-	if (is_vmflag_set((unsigned long)map, LOCKED)) {
-		printf("VMA flag %s is present on page 1 after unlock\n", LOCKED);
-		return 1;
-	}
-
-	return 0;
-}
-
-static int test_mlock_lock()
-{
-	char *map;
-	int ret = 1;
-	unsigned long page_size = getpagesize();
-
-	map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-	if (map == MAP_FAILED) {
-		perror("test_mlock_locked mmap");
-		goto out;
-	}
-
-	if (mlock2_(map, 2 * page_size, 0)) {
-		if (errno == ENOSYS) {
-			printf("Cannot call new mlock family, skipping test\n");
-			_exit(KSFT_SKIP);
-		}
-		perror("mlock2(0)");
-		goto unmap;
-	}
-
-	if (!lock_check((unsigned long)map))
-		goto unmap;
-
-	/* Now unlock and recheck attributes */
-	if (munlock(map, 2 * page_size)) {
-		perror("munlock()");
-		goto unmap;
-	}
-
-	ret = unlock_lock_check(map);
-
-unmap:
-	munmap(map, 2 * page_size);
-out:
-	return ret;
-}
-
-static int onfault_check(char *map)
-{
-	*map = 'a';
-	if (!is_vma_lock_on_fault((unsigned long)map)) {
-		printf("VMA is not marked for lock on fault\n");
-		return 1;
-	}
-
-	return 0;
-}
-
-static int unlock_onfault_check(char *map)
-{
-	unsigned long page_size = getpagesize();
-
-	if (is_vma_lock_on_fault((unsigned long)map) ||
-	    is_vma_lock_on_fault((unsigned long)map + page_size)) {
-		printf("VMA is still lock on fault after unlock\n");
-		return 1;
-	}
-
-	return 0;
-}
-
-static int test_mlock_onfault()
-{
-	char *map;
-	int ret = 1;
-	unsigned long page_size = getpagesize();
-
-	map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-	if (map == MAP_FAILED) {
-		perror("test_mlock_locked mmap");
-		goto out;
-	}
-
-	if (mlock2_(map, 2 * page_size, MLOCK_ONFAULT)) {
-		if (errno == ENOSYS) {
-			printf("Cannot call new mlock family, skipping test\n");
-			_exit(KSFT_SKIP);
-		}
-		perror("mlock2(MLOCK_ONFAULT)");
-		goto unmap;
-	}
-
-	if (onfault_check(map))
-		goto unmap;
-
-	/* Now unlock and recheck attributes */
-	if (munlock(map, 2 * page_size)) {
-		if (errno == ENOSYS) {
-			printf("Cannot call new mlock family, skipping test\n");
-			_exit(KSFT_SKIP);
-		}
-		perror("munlock()");
-		goto unmap;
-	}
-
-	ret = unlock_onfault_check(map);
-unmap:
-	munmap(map, 2 * page_size);
-out:
-	return ret;
-}
-
-static int test_lock_onfault_of_present()
-{
-	char *map;
-	int ret = 1;
-	unsigned long page_size = getpagesize();
-
-	map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-	if (map == MAP_FAILED) {
-		perror("test_mlock_locked mmap");
-		goto out;
-	}
-
-	*map = 'a';
-
-	if (mlock2_(map, 2 * page_size, MLOCK_ONFAULT)) {
-		if (errno == ENOSYS) {
-			printf("Cannot call new mlock family, skipping test\n");
-			_exit(KSFT_SKIP);
-		}
-		perror("mlock2(MLOCK_ONFAULT)");
-		goto unmap;
-	}
-
-	if (!is_vma_lock_on_fault((unsigned long)map) ||
-	    !is_vma_lock_on_fault((unsigned long)map + page_size)) {
-		printf("VMA with present pages is not marked lock on fault\n");
-		goto unmap;
-	}
-	ret = 0;
-unmap:
-	munmap(map, 2 * page_size);
-out:
-	return ret;
-}
-
-static int test_munlockall()
-{
-	char *map;
-	int ret = 1;
-	unsigned long page_size = getpagesize();
-
-	map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-
-	if (map == MAP_FAILED) {
-		perror("test_munlockall mmap");
-		goto out;
-	}
-
-	if (mlockall(MCL_CURRENT)) {
-		perror("mlockall(MCL_CURRENT)");
-		goto out;
-	}
-
-	if (!lock_check((unsigned long)map))
-		goto unmap;
-
-	if (munlockall()) {
-		perror("munlockall()");
-		goto unmap;
-	}
-
-	if (unlock_lock_check(map))
-		goto unmap;
-
-	munmap(map, 2 * page_size);
-
-	map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-
-	if (map == MAP_FAILED) {
-		perror("test_munlockall second mmap");
-		goto out;
-	}
-
-	if (mlockall(MCL_CURRENT | MCL_ONFAULT)) {
-		perror("mlockall(MCL_CURRENT | MCL_ONFAULT)");
-		goto unmap;
-	}
-
-	if (onfault_check(map))
-		goto unmap;
-
-	if (munlockall()) {
-		perror("munlockall()");
-		goto unmap;
-	}
-
-	if (unlock_onfault_check(map))
-		goto unmap;
-
-	if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
-		perror("mlockall(MCL_CURRENT | MCL_FUTURE)");
-		goto out;
-	}
-
-	if (!lock_check((unsigned long)map))
-		goto unmap;
-
-	if (munlockall()) {
-		perror("munlockall()");
-		goto unmap;
-	}
-
-	ret = unlock_lock_check(map);
-
-unmap:
-	munmap(map, 2 * page_size);
-out:
-	munlockall();
-	return ret;
-}
-
-static int test_vma_management(bool call_mlock)
-{
-	int ret = 1;
-	void *map;
-	unsigned long page_size = getpagesize();
-	struct vm_boundaries page1;
-	struct vm_boundaries page2;
-	struct vm_boundaries page3;
-
-	map = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE,
-		   MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
-	if (map == MAP_FAILED) {
-		perror("mmap()");
-		return ret;
-	}
-
-	if (call_mlock && mlock2_(map, 3 * page_size, MLOCK_ONFAULT)) {
-		if (errno == ENOSYS) {
-			printf("Cannot call new mlock family, skipping test\n");
-			_exit(KSFT_SKIP);
-		}
-		perror("mlock(ONFAULT)\n");
-		goto out;
-	}
-
-	if (get_vm_area((unsigned long)map, &page1) ||
-	    get_vm_area((unsigned long)map + page_size, &page2) ||
-	    get_vm_area((unsigned long)map + page_size * 2, &page3)) {
-		printf("couldn't find mapping in /proc/self/maps\n");
-		goto out;
-	}
-
-	/*
-	 * Before we unlock a portion, we need to that all three pages are in
-	 * the same VMA.  If they are not we abort this test (Note that this is
-	 * not a failure)
-	 */
-	if (page1.start != page2.start || page2.start != page3.start) {
-		printf("VMAs are not merged to start, aborting test\n");
-		ret = 0;
-		goto out;
-	}
-
-	if (munlock(map + page_size, page_size)) {
-		perror("munlock()");
-		goto out;
-	}
-
-	if (get_vm_area((unsigned long)map, &page1) ||
-	    get_vm_area((unsigned long)map + page_size, &page2) ||
-	    get_vm_area((unsigned long)map + page_size * 2, &page3)) {
-		printf("couldn't find mapping in /proc/self/maps\n");
-		goto out;
-	}
-
-	/* All three VMAs should be different */
-	if (page1.start == page2.start || page2.start == page3.start) {
-		printf("failed to split VMA for munlock\n");
-		goto out;
-	}
-
-	/* Now unlock the first and third page and check the VMAs again */
-	if (munlock(map, page_size * 3)) {
-		perror("munlock()");
-		goto out;
-	}
-
-	if (get_vm_area((unsigned long)map, &page1) ||
-	    get_vm_area((unsigned long)map + page_size, &page2) ||
-	    get_vm_area((unsigned long)map + page_size * 2, &page3)) {
-		printf("couldn't find mapping in /proc/self/maps\n");
-		goto out;
-	}
-
-	/* Now all three VMAs should be the same */
-	if (page1.start != page2.start || page2.start != page3.start) {
-		printf("failed to merge VMAs after munlock\n");
-		goto out;
-	}
-
-	ret = 0;
-out:
-	munmap(map, 3 * page_size);
-	return ret;
-}
-
-static int test_mlockall(int (test_function)(bool call_mlock))
-{
-	int ret = 1;
-
-	if (mlockall(MCL_CURRENT | MCL_ONFAULT | MCL_FUTURE)) {
-		perror("mlockall");
-		return ret;
-	}
-
-	ret = test_function(false);
-	munlockall();
-	return ret;
-}
-
-int main(int argc, char **argv)
-{
-	int ret = 0;
-	ret += test_mlock_lock();
-	ret += test_mlock_onfault();
-	ret += test_munlockall();
-	ret += test_lock_onfault_of_present();
-	ret += test_vma_management(true);
-	ret += test_mlockall(test_vma_management);
-	return ret;
-}