diff options
Diffstat (limited to 'meta/packages/qemu/qemu-0.9.1+svnr4027/fix_brk.patch')
| -rw-r--r-- | meta/packages/qemu/qemu-0.9.1+svnr4027/fix_brk.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/meta/packages/qemu/qemu-0.9.1+svnr4027/fix_brk.patch b/meta/packages/qemu/qemu-0.9.1+svnr4027/fix_brk.patch new file mode 100644 index 000000000..783198d9e --- /dev/null +++ b/meta/packages/qemu/qemu-0.9.1+svnr4027/fix_brk.patch @@ -0,0 +1,55 @@ +--- 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) && |