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vfio: Add O_CLOEXEC flag to vfio device fd

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Add the default O_CLOEXEC flag for device file descriptors.  This is
generally considered a safer option as it allows the user a race free
option to decide whether file descriptors are inherited across exec,
with the default avoiding file descriptor leaks.

Reported-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2013-08-22 10:33:41 -06:00
parent a5d550703d
commit 5d042fbdbb
1 changed files with 1 additions and 1 deletions
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2
drivers/vfio/vfio.c
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@ -1109,7 +1109,7 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
* We can't use anon_inode_getfd() because we need to modify * We can't use anon_inode_getfd() because we need to modify
* the f_mode flags directly to allow more than just ioctls * the f_mode flags directly to allow more than just ioctls
*/ */
ret = get_unused_fd_flags(0); ret = get_unused_fd_flags(O_CLOEXEC);
if (ret < 0) { if (ret < 0) {
device->ops->release(device->device_data); device->ops->release(device->device_data);
break; break;