diff options
| author | Christopher Faylor <me@cgf.cx> | 2001-11-14 07:12:11 +0300 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2001-11-14 07:12:11 +0300 |
| commit | 65814395b660eb3a58c3776606b6323c2386d044 (patch) | |
| tree | d08da3ef90f2a6e2a2bd740237066e0deb33e42f | |
| parent | b83587946b32247b86846551d8ae27044f3ed60c (diff) | |
* syscalls.cc (_write): Allow zero length as per SUSv2.
| -rw-r--r-- | winsup/cygwin/ChangeLog | 4 | ||||
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index ba6e5ea05..ad64ad241 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,7 @@ +2001-11-13 Christopher Faylor <cgf@redhat.com> + + * syscalls.cc (_write): Allow zero length as per SUSv2. + 2001-11-13 Corinna Vinschen <corinna@vinschen.de> * dir.cc (mkdir): Add HIDDEN file attribute if file has leading dot diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 307d61885..848e0e44f 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -355,6 +355,9 @@ _read (int fd, void *ptr, size_t len) extern "C" ssize_t _write (int fd, const void *ptr, size_t len) { + if (len == 0) + return 0; + if (__check_invalid_read_ptr_errno (ptr, len)) return -1; |