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--- qemu/linux-user/syscall.c1 (revision 16)
+++ qemu/linux-user/syscall.c (working copy)
@@ -441,7 +441,7 @@
if (!new_brk)
return target_brk;
if (new_brk < target_original_brk)
- return -TARGET_ENOMEM;
+ return target_brk;
brk_page = HOST_PAGE_ALIGN(target_brk);
@@ -456,12 +456,11 @@
mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
- if (is_error(mapped_addr)) {
- return mapped_addr;
- } else {
+
+ if (!is_error(mapped_addr))
target_brk = new_brk;
- return target_brk;
- }
+
+ return target_brk;
}
static inline abi_long copy_from_user_fdset(fd_set *fds,
--- qemu/linux-user/mmap.c1 (revision 16)
+++ qemu/linux-user/mmap.c (working copy)
@@ -260,6 +259,9 @@
host_start += offset - host_offset;
start = h2g(host_start);
} else {
+ int flg;
+ target_ulong addr;
+
if (start & ~TARGET_PAGE_MASK) {
errno = EINVAL;
return -1;
@@ -267,6 +269,14 @@
end = start + len;
real_end = HOST_PAGE_ALIGN(end);
+ for(addr = real_start; addr < real_end; addr += TARGET_PAGE_SIZE) {
+ flg = page_get_flags(addr);
+ if( flg & PAGE_RESERVED ) {
+ errno = ENXIO;
+ return -1;
+ }
+ }
+
/* worst case: we cannot map the file because the offset is not
aligned, so we read it */
if (!(flags & MAP_ANONYMOUS) &&
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