On 07/17/2018 05:04 PM, Christian König wrote:
> Otherwise we leak file descriptors into child processes.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
Yeah, that's the key point that dup could remove CLOEXEC effect.
Reviewed-and-Tested-by: Junwei Zhang <Jerry.Zhang at amd.com>
> ---
> amdgpu/amdgpu_device.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
> index 34ac95b8..d7aec6a4 100644
> --- a/amdgpu/amdgpu_device.c
> +++ b/amdgpu/amdgpu_device.c
> @@ -34,6 +34,7 @@
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> +#include <fcntl.h>
>
> #include "xf86drm.h"
> #include "amdgpu_drm.h"
> @@ -205,7 +206,7 @@ int amdgpu_device_initialize(int fd,
> return r;
> }
> if ((flag_auth) && (!flag_authexist)) {
> - dev->flink_fd = dup(fd);
> + dev->flink_fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
> }
> *major_version = dev->major_version;
> *minor_version = dev->minor_version;
> @@ -239,7 +240,7 @@ int amdgpu_device_initialize(int fd,
> goto cleanup;
> }
>
> - dev->fd = dup(fd);
> + dev->fd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
> dev->flink_fd = dev->fd;
> dev->major_version = version->version_major;
> dev->minor_version = version->version_minor;
>
