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Diffstat (limited to 'sysdeps/pthread/aio_fsync.c')
-rw-r--r--sysdeps/pthread/aio_fsync.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/sysdeps/pthread/aio_fsync.c b/sysdeps/pthread/aio_fsync.c
index 17f43516bf..4c90d69584 100644
--- a/sysdeps/pthread/aio_fsync.c
+++ b/sysdeps/pthread/aio_fsync.c
@@ -1,5 +1,5 @@
/* Synchronize I/O in given file descriptor.
- Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@@ -36,12 +36,22 @@
int
aio_fsync (int op, struct aiocb *aiocbp)
{
- if (op != O_DSYNC && op != O_SYNC)
+ int flags;
+
+ if (op != O_DSYNC && __builtin_expect (op != O_SYNC, 0))
{
__set_errno (EINVAL);
return -1;
}
+ flags = fcntl (aiocbp->aio_fildes, F_GETFL);
+ if (__builtin_expect (flags == -1, 0)
+ || __builtin_expect ((flags & (O_RDWR | O_WRONLY)) == 0, 0))
+ {
+ __set_errno (EBADF);
+ return -1;
+ }
+
return (__aio_enqueue_request ((aiocb_union *) aiocbp,
op == O_SYNC ? LIO_SYNC : LIO_DSYNC) == NULL
? -1 : 0);