Re: [PATCH v2] man2: new page describing memfd_secret() system call

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Hi Mike,

On 7/29/21 10:29 AM, Mike Rapoport wrote:
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>

Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
---

v2: address Alex's comments:
* update synopsis to match new style for syscalls without a wrapper
* drop note about absence of glibc wrapper
* update formatting

Please check a small typo introduced in v2 below.

Thanks!

Alex


v1: https://lore.kernel.org/linux-api/20210727124140.1487079-1-rppt@xxxxxxxxxx

  man2/memfd_secret.2 | 147 ++++++++++++++++++++++++++++++++++++++++++++
  1 file changed, 147 insertions(+)
  create mode 100644 man2/memfd_secret.2

diff --git a/man2/memfd_secret.2 b/man2/memfd_secret.2
new file mode 100644
index 000000000..5a70cb5d2
--- /dev/null
+++ b/man2/memfd_secret.2
@@ -0,0 +1,147 @@
+.\" Copyright (c) 2021, IBM Corporation.
+.\" Written by Mike Rapoport <rppt@xxxxxxxxxxxxx>
+.\"
+.\" Based on memfd_create(2) man page
+.\" Copyright (C) 2014 Michael Kerrisk <mtk.manpages@xxxxxxxxx>
+.\" and Copyright (C) 2014 David Herrmann <dh.herrmann@xxxxxxxxx>
+.\"
+.\" %%%LICENSE_START(GPLv2+)
+.\"
+.\" This program is free software; you can redistribute it and/or modify
+.\" it under the terms of the GNU General Public License as published by
+.\" the Free Software Foundation; either version 2 of the License, or
+.\" (at your option) any later version.
+.\"
+.\" This program is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+.\" GNU General Public License for more details.
+.\"
+.\" You should have received a copy of the GNU General Public
+.\" License along with this manual; if not, see
+.\" <http://www.gnu.org/licenses/>.
+.\" %%%LICENSE_END
+.\"
+.TH MEMFD_SECRET 2 2020-08-02 Linux "Linux Programmer's Manual"
+.SH NAME
+memfd_secret \- create an anonymous file to access secret memory regions
+.SH SYNOPSIS
+.nf
+.PP
+.BR "#include <sys/syscall.h>" "      /* Definition of " SYS_* " constants */"
+.B #include <unistd.h>
+.PP
+.BI "int syscall(SYS_memfd_secret, int " cmd ", unsigned int " flags \
+", int " cpu_id );

Check the parameter list :)



--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/



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