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OS-4060 need tmpfs size support in percent
OS-4043 tmpfs should support gigabyte sizes
OS-4044 tmpfs should support "mode" option
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
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          --- old/usr/src/man/man1m/mount_tmpfs.1m
          +++ new/usr/src/man/man1m/mount_tmpfs.1m
   1    1  '\" te
   2    2  .\"  Copyright (c) 2003, Sun Microsystems, Inc.  All Rights Reserved
   3      -.\"  Copyright (c) 2011, Joyent, Inc.  All Rights Reserved
        3 +.\"  Copyright 2015 Joyent, Inc.
   4    4  .\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
   5    5  .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
   6    6  .\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
   7      -.TH MOUNT_TMPFS 1M "Dec 2, 2011"
        7 +.TH MOUNT_TMPFS 1M "Mar 18, 2015"
   8    8  .SH NAME
   9    9  mount_tmpfs \- mount tmpfs file systems
  10   10  .SH SYNOPSIS
  11   11  .LP
  12   12  .nf
  13   13  \fBmount\fR [\fB-F\fR tmpfs] [\fB-o\fR \fIspecific_options\fR] [\fB-O\fR] \fIspecial\fR \fImount_point\fR
  14   14  .fi
  15   15  
  16   16  .SH DESCRIPTION
  17   17  .LP
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  19   19  to the \fBVM\fR system and page cache as a file system.
  20   20  .sp
  21   21  .LP
  22   22  \fBmount\fR attaches a \fBtmpfs\fR file system to the file system hierarchy at
  23   23  the pathname location \fImount_point\fR, which must already exist. If
  24   24  \fImount_point\fR has any contents prior to the \fBmount\fR operation, these
  25   25  remain hidden until the file system is once again unmounted. The attributes
  26   26  (mode, owner, and group) of the root of the \fBtmpfs\fR filesystem are
  27   27  inherited from the underlying \fImount_point\fR, provided that those attributes
  28   28  are determinable. If not, the root's attributes are set to their default
  29      -values.
       29 +values. The mode may also be overriden by the \fBmode\fR mount option, which
       30 +takes precedence if set.
  30   31  .sp
  31   32  .LP
  32   33  The \fIspecial\fR argument is usually specified as \fBswap\fR but is in fact
  33   34  disregarded and assumed to be the virtual memory resources within the system.
  34   35  .SH OPTIONS
  35   36  .ne 2
  36   37  .na
  37   38  \fB\fB-o\fR \fIspecific_options\fR\fR
  38   39  .ad
  39   40  .RS 23n
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  48   49  .ad
  49   50  .sp .6
  50   51  .RS 19n
  51   52  Remounts a file system with a new size. A size not explicitly
  52   53  set with \fBremount\fR reverts to no limit.
  53   54  .RE
  54   55  
  55   56  .sp
  56   57  .ne 2
  57   58  .na
       59 +\fBmode=\fIoctalmode\fR\fR
       60 +.ad
       61 +.RS 19n
       62 +The \fImode\fR argument controls the permissions of the \fBtmpfs\fR mount
       63 +point.  The argument must be an octal number, of the form passed to
       64 +\fBchmod\fR(1).  Only the access mode, setuid, setgid, and sticky bits (a mask
       65 +of \fB07777\fR) may be set.  If this option is not provided then the default
       66 +mode behaviour, as described above, applies.
       67 +.RE
       68 +
       69 +.sp
       70 +.sp
       71 +.ne 2
       72 +.na
  58   73  \fBsize=\fIsz\fR\fR
  59   74  .ad
  60   75  .RS 19n
  61   76  The \fIsz\fR argument controls the size of this particular \fBtmpfs\fR file
  62   77  system. If the argument is has a `k' suffix, the number will be interpreted as
  63   78  a number of kilobytes. An `m' suffix will be interpreted as a number of
  64      -megabytes. No suffix is interpreted as bytes. In all cases, the actual size of
       79 +megabytes. A `g' suffix will be interpreted as a number of gigabytes. A `%'
       80 +suffix will be interpreted as a percentage of the swap space available to the
       81 +zone. No suffix is interpreted as bytes. In all cases, the actual size of
  65   82  the file system is the number of bytes specified, rounded up to the physical
  66   83  pagesize of the system.
  67   84  .RE
  68   85  
  69   86  .sp
  70   87  .ne 2
  71   88  .na
  72   89  \fB\fBxattr\fR | \fBnoxattr\fR\fR
  73   90  .ad
  74   91  .RS 19n
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