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vfio: Add O_CLOEXEC flag to vfio device fd
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>
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@ -1109,7 +1109,7 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
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* We can't use anon_inode_getfd() because we need to modify
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* the f_mode flags directly to allow more than just ioctls
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*/
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ret = get_unused_fd_flags(0);
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ret = get_unused_fd_flags(O_CLOEXEC);
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if (ret < 0) {
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device->ops->release(device->device_data);
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break;
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