From nobody Tue Oct 19 20:04:46 2021 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id B03BE17F5063; Tue, 19 Oct 2021 20:04:47 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HYl8H09p6z4bNC; Tue, 19 Oct 2021 20:04:46 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 89F851A2D8; Tue, 19 Oct 2021 20:04:46 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 19JK4kV4069869; Tue, 19 Oct 2021 20:04:46 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19JK4kxU069868; Tue, 19 Oct 2021 20:04:46 GMT (envelope-from git) Date: Tue, 19 Oct 2021 20:04:46 GMT Message-Id: <202110192004.19JK4kxU069868@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: f833ab9dd187 - main - procctl(2): add consistent shortcut P_ID:0 as curproc List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: f833ab9dd187328306fa1601330fbc8332392abe Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=f833ab9dd187328306fa1601330fbc8332392abe commit f833ab9dd187328306fa1601330fbc8332392abe Author: Konstantin Belousov AuthorDate: 2021-10-15 19:01:42 +0000 Commit: Konstantin Belousov CommitDate: 2021-10-19 20:04:34 +0000 procctl(2): add consistent shortcut P_ID:0 as curproc Reported by: bdrewery, emaste Reviewed by: emaste, markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D32513 --- lib/libc/sys/procctl.2 | 2 ++ sys/kern/kern_procctl.c | 16 +++++++++++----- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/lib/libc/sys/procctl.2 b/lib/libc/sys/procctl.2 index 30933875ccbc..7412c2ee9d56 100644 --- a/lib/libc/sys/procctl.2 +++ b/lib/libc/sys/procctl.2 @@ -62,6 +62,8 @@ The following identifier types are supported: .It Dv P_PID Control the process with the process ID .Fa id . +.Fa id +zero is a shortcut for the calling process ID. .It Dv P_PGID Control processes belonging to the process group with the ID .Fa id . diff --git a/sys/kern/kern_procctl.c b/sys/kern/kern_procctl.c index 90c5e63c7219..613fabc4ca34 100644 --- a/sys/kern/kern_procctl.c +++ b/sys/kern/kern_procctl.c @@ -904,12 +904,18 @@ kern_procctl(struct thread *td, idtype_t idtype, id_t id, int com, void *data) switch (idtype) { case P_PID: - p = pfind(id); - if (p == NULL) { - error = ESRCH; - break; + if (id == 0) { + p = td->td_proc; + error = 0; + PROC_LOCK(p); + } else { + p = pfind(id); + if (p == NULL) { + error = ESRCH; + break; + } + error = p_cansee(td, p); } - error = p_cansee(td, p); if (error == 0) error = kern_procctl_single(td, p, com, data); PROC_UNLOCK(p);