diff options
| author | Christopher Faylor <me@cgf.cx> | 2009-08-22 01:19:45 +0400 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2009-08-22 01:19:45 +0400 |
| commit | e41f43a1a675ee6d0f21f2ab611c97ffe9c22088 (patch) | |
| tree | 35bca25fa9908904bf55b91e93381b2d34a20e82 | |
| parent | 24149e4aa93d8d5739b610624c0c1db36f487ab5 (diff) | |
* fcntl.cc (fcntl64): Detect negative fd as error.
| -rw-r--r-- | winsup/cygwin/ChangeLog | 4 | ||||
| -rw-r--r-- | winsup/cygwin/fcntl.cc | 8 |
2 files changed, 11 insertions, 1 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index 9c08c56da..316a48a3e 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,7 @@ +2009-08-21 Christopher Faylor <me+cygwin@cgf.cx> + + * fcntl.cc (fcntl64): Detect negative fd as error. + 2009-08-21 Corinna Vinschen <corinna@vinschen.de> * mmap.cc (mmap64): Allocate fh_disk_file on cygheap. Delete diff --git a/winsup/cygwin/fcntl.cc b/winsup/cygwin/fcntl.cc index 442686268..bb41f05c5 100644 --- a/winsup/cygwin/fcntl.cc +++ b/winsup/cygwin/fcntl.cc @@ -40,7 +40,13 @@ fcntl64 (int fd, int cmd, ...) switch (cmd) { case F_DUPFD: - res = dup2 (fd, cygheap_fdnew (((int) arg) - 1)); + if ((int) arg >= 0) + res = dup2 (fd, cygheap_fdnew (((int) arg) - 1)); + else + { + set_errno (EINVAL); + res = -1; + } break; case F_GETLK: case F_SETLK: |