Re: [PATCH bpf-next 2/2] bpf: Expose bpf_d_path helper to sleepable LSM hooks

2020-11-13 Thread Daniel Borkmann
On 11/13/20 4:18 AM, Yonghong Song wrote: On 11/12/20 9:19 AM, KP Singh wrote: From: KP Singh Sleepable hooks are never called from an NMI/interrupt context, so it is safe to use the bpf_d_path helper in LSM programs attaching to these hooks. The helper is not restricted to sleepable

Re: [PATCH bpf-next 2/2] bpf: Expose bpf_d_path helper to sleepable LSM hooks

2020-11-12 Thread Yonghong Song
On 11/12/20 9:19 AM, KP Singh wrote: From: KP Singh Sleepable hooks are never called from an NMI/interrupt context, so it is safe to use the bpf_d_path helper in LSM programs attaching to these hooks. The helper is not restricted to sleepable programs and merely uses the list of sleeable

Re: [PATCH bpf-next 2/2] bpf: Expose bpf_d_path helper to sleepable LSM hooks

2020-11-12 Thread Andrii Nakryiko
On Thu, Nov 12, 2020 at 9:20 AM KP Singh wrote: > > From: KP Singh > > Sleepable hooks are never called from an NMI/interrupt context, so it is > safe to use the bpf_d_path helper in LSM programs attaching to these > hooks. > > The helper is not restricted to sleepable programs and merely uses

[PATCH bpf-next 2/2] bpf: Expose bpf_d_path helper to sleepable LSM hooks

2020-11-12 Thread KP Singh
From: KP Singh Sleepable hooks are never called from an NMI/interrupt context, so it is safe to use the bpf_d_path helper in LSM programs attaching to these hooks. The helper is not restricted to sleepable programs and merely uses the list of sleeable hooks as the initial subset of LSM hooks