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-rw-r--r--src/mman/mmap.c13
-rw-r--r--src/mman/munmap.c11
2 files changed, 21 insertions, 3 deletions
diff --git a/src/mman/mmap.c b/src/mman/mmap.c
index 883acb28..fd2bb07e 100644
--- a/src/mman/mmap.c
+++ b/src/mman/mmap.c
@@ -5,16 +5,25 @@
#include "syscall.h"
#include "libc.h"
+static void dummy1(int x) { }
+static void dummy0(void) { }
+weak_alias(dummy1, __vm_lock);
+weak_alias(dummy0, __vm_unlock);
+
void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
{
+ void *ret;
if (sizeof(off_t) > sizeof(long))
if (((long)off & 0xfff) | ((long)((unsigned long long)off>>(12 + 8*(sizeof(off_t)-sizeof(long))))))
start = (void *)-1;
+ if (flags & MAP_FIXED) __vm_lock(-1);
#ifdef SYS_mmap2
- return (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off>>12);
+ ret = (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off>>12);
#else
- return (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off);
+ ret = (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off);
#endif
+ if (flags & MAP_FIXED) __vm_unlock();
+ return ret;
}
weak_alias(__mmap, mmap);
diff --git a/src/mman/munmap.c b/src/mman/munmap.c
index ab7da9e2..91aefd40 100644
--- a/src/mman/munmap.c
+++ b/src/mman/munmap.c
@@ -3,9 +3,18 @@
#include "syscall.h"
#include "libc.h"
+static void dummy1(int x) { }
+static void dummy0(void) { }
+weak_alias(dummy1, __vm_lock);
+weak_alias(dummy0, __vm_unlock);
+
int __munmap(void *start, size_t len)
{
- return syscall(SYS_munmap, start, len);
+ int ret;
+ __vm_lock(-1);
+ ret = syscall(SYS_munmap, start, len);
+ __vm_unlock();
+ return ret;
}
weak_alias(__munmap, munmap);