diff options
Diffstat (limited to 'winsup/cygwin/fhandler.cc')
| -rw-r--r-- | winsup/cygwin/fhandler.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc index 539c2e8fa..d33b28d94 100644 --- a/winsup/cygwin/fhandler.cc +++ b/winsup/cygwin/fhandler.cc @@ -223,8 +223,10 @@ fhandler_base::raw_read (void *ptr, size_t& ulen) HANDLE h = NULL; /* grumble */ int prio = 0; /* ditto */ + int try_noreserve = 1; DWORD len = ulen; +retry: ulen = (size_t) -1; if (read_state) { @@ -259,6 +261,20 @@ fhandler_base::raw_read (void *ptr, size_t& ulen) bytes_read = 0; break; } + if (try_noreserve) + { + try_noreserve = 0; + switch (mmap_is_attached_or_noreserve (ptr, len)) + { + case MMAP_NORESERVE_COMMITED: + goto retry; + case MMAP_RAISE_SIGBUS: + raise(SIGBUS); + case MMAP_NONE: + break; + } + } + /*FALLTHRU*/ case ERROR_INVALID_FUNCTION: case ERROR_INVALID_PARAMETER: case ERROR_INVALID_HANDLE: |