From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/tools/testing/selftests/proc/proc-self-map-files-002.c | 24 ++++++++++++++----------
1 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/kernel/tools/testing/selftests/proc/proc-self-map-files-002.c b/kernel/tools/testing/selftests/proc/proc-self-map-files-002.c
index 8574442..e6aa00a 100644
--- a/kernel/tools/testing/selftests/proc/proc-self-map-files-002.c
+++ b/kernel/tools/testing/selftests/proc/proc-self-map-files-002.c
@@ -46,12 +46,13 @@
int main(void)
{
- const unsigned int PAGE_SIZE = sysconf(_SC_PAGESIZE);
-#ifdef __arm__
- unsigned long va = 2 * PAGE_SIZE;
-#else
- unsigned long va = 0;
-#endif
+ const int PAGE_SIZE = sysconf(_SC_PAGESIZE);
+ /*
+ * va_max must be enough bigger than vm.mmap_min_addr, which is
+ * 64KB/32KB by default. (depends on CONFIG_LSM_MMAP_MIN_ADDR)
+ */
+ const unsigned long va_max = 1UL << 20;
+ unsigned long va;
void *p;
int fd;
unsigned long a, b;
@@ -60,10 +61,13 @@
if (fd == -1)
return 1;
- p = mmap((void *)va, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE|MAP_FIXED, fd, 0);
- if (p == MAP_FAILED) {
- if (errno == EPERM)
- return 2;
+ for (va = 0; va < va_max; va += PAGE_SIZE) {
+ p = mmap((void *)va, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE|MAP_FIXED, fd, 0);
+ if (p == (void *)va)
+ break;
+ }
+ if (va == va_max) {
+ fprintf(stderr, "error: mmap doesn't like you\n");
return 1;
}
--
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