From: Joel Savitz <jsavitz@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Joel Savitz <jsavitz@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Waiman Long <longman@redhat.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Kristina Martsenko <kristina.martsenko@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Kees Cook <keescook@chromium.org>,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
YueHaibing <yuehaibing@huawei.com>,
Micah Morton <mortonm@chromium.org>,
Yang Shi <yang.shi@linux.alibaba.com>,
Jann Horn <jannh@google.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
Rafael Aquini <aquini@redhat.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Yury Norov <norov.maillist@gmail.com>
Subject: [PATCH v2 2/2] prctl.2: Document the new PR_GET_TASK_SIZE option
Date: Thu, 2 May 2019 16:52:22 -0400 [thread overview]
Message-ID: <1556830342-32307-3-git-send-email-jsavitz@redhat.com> (raw)
In-Reply-To: <1556830342-32307-1-git-send-email-jsavitz@redhat.com>
Add a short explanation of the new PR_GET_TASK_SIZE option for the benefit
of future generations.
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
---
man2/prctl.2 | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/man2/prctl.2 b/man2/prctl.2
index 06d8e13c7..35a6a3919 100644
--- a/man2/prctl.2
+++ b/man2/prctl.2
@@ -49,6 +49,7 @@
.\" 2013-01-10 Kees Cook, document PR_SET_PTRACER
.\" 2012-02-04 Michael Kerrisk, document PR_{SET,GET}_CHILD_SUBREAPER
.\" 2014-11-10 Dave Hansen, document PR_MPX_{EN,DIS}ABLE_MANAGEMENT
+.\" 2019-05-02 Joel Savitz, document PR_GET_TASK_SIZE
.\"
.\"
.TH PRCTL 2 2019-03-06 "Linux" "Linux Programmer's Manual"
@@ -1375,6 +1376,14 @@ system call on Tru64).
for information on versions and architectures)
Return unaligned access control bits, in the location pointed to by
.IR "(unsigned int\ *) arg2" .
+.TP
+.B PR_GET_TASK_SIZE
+Copy the value of TASK_SIZE to the userspace address in
+.IR "(unsigned long\ *) arg2" .
+Return
+.B EFAULT
+if this operation fails.
+
.SH RETURN VALUE
On success,
.BR PR_GET_DUMPABLE ,
--
2.18.1
next prev parent reply other threads:[~2019-05-02 20:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 20:52 [PATCH v2 0/2] sys/prctl: expose TASK_SIZE value to userspace Joel Savitz
2019-05-02 20:52 ` [PATCH v2 1/2] kernel/sys: add PR_GET_TASK_SIZE option to prctl(2) Joel Savitz
2019-05-02 21:09 ` Cyrill Gorcunov
2019-05-02 21:46 ` Joel Savitz
2019-05-03 8:31 ` Cyrill Gorcunov
2019-05-03 11:31 ` David Laight
2019-05-02 21:24 ` Rafael Aquini
2019-05-02 21:49 ` Yury Norov
2019-05-02 20:52 ` Joel Savitz [this message]
2019-05-02 22:23 ` [PATCH v2 2/2] prctl.2: Document the new PR_GET_TASK_SIZE option Yury Norov
2019-05-03 1:49 ` Rafael Aquini
2019-05-02 21:01 ` [PATCH v2 0/2] sys/prctl: expose TASK_SIZE value to userspace Waiman Long
2019-05-02 21:10 ` Cyrill Gorcunov
2019-05-02 21:22 ` Joel Savitz
2019-05-02 21:34 ` Yury Norov
2019-05-02 21:26 ` Rafael Aquini
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