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--- old/usr/src/man/man1m/mount_tmpfs.1m.man.txt
+++ new/usr/src/man/man1m/mount_tmpfs.1m.man.txt
1 1 MOUNT_TMPFS(1M) Maintenance Commands MOUNT_TMPFS(1M)
2 2
3 3
4 4
5 5 NAME
6 6 mount_tmpfs - mount tmpfs file systems
7 7
8 8 SYNOPSIS
9 9 mount [-F tmpfs] [-o specific_options] [-O] special mount_point
10 10
11 11
12 12 DESCRIPTION
13 13 tmpfs is a memory based file system which uses kernel resources
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14 14 relating to the VM system and page cache as a file system.
15 15
16 16
17 17 mount attaches a tmpfs file system to the file system hierarchy at the
18 18 pathname location mount_point, which must already exist. If mount_point
19 19 has any contents prior to the mount operation, these remain hidden
20 20 until the file system is once again unmounted. The attributes (mode,
21 21 owner, and group) of the root of the tmpfs filesystem are inherited
22 22 from the underlying mount_point, provided that those attributes are
23 23 determinable. If not, the root's attributes are set to their default
24 - values. The mode may also be overriden by the mode mount option, which
24 + values. The mode may also be overridden by the mode mount option, which
25 25 takes precedence if set.
26 26
27 27
28 28 The special argument is usually specified as swap but is in fact
29 29 disregarded and assumed to be the virtual memory resources within the
30 30 system.
31 31
32 32 OPTIONS
33 33 -o specific_options
34 34 Specify tmpfs file system specific options in a
35 35 comma-separated list with no intervening spaces.
36 36 If invalid options are specified, a warning
37 37 message is printed and the invalid options are
38 38 ignored. The following options are available:
39 39
40 40 remount
41 41
42 42 Remounts a file system with a
43 43 new size. A size not
44 44 explicitly set with remount
45 45 reverts to no limit.
46 46
47 47
48 48 mode=octalmode
49 49 The mode argument controls
50 50 the permissions of the tmpfs
51 51 mount point. The argument
52 52 must be an octal number, of
53 53 the form passed to chmod(1).
54 54 Only the access mode, setuid,
55 55 setgid, and sticky bits (a
56 56 mask of 07777) may be set.
57 57 If this option is not
58 58 provided then the default
59 59 mode behaviour, as described
60 60 above, applies.
61 61
62 62
63 63
64 64 size=sz
65 65 The sz argument controls the
66 66 size of this particular tmpfs
67 67 file system. If the argument
68 68 is has a `k' suffix, the
69 69 number will be interpreted as
70 70 a number of kilobytes. An `m'
71 71 suffix will be interpreted as
72 72 a number of megabytes. A `g'
73 73 suffix will be interpreted as
74 74 a number of gigabytes. A `%'
75 75 suffix will be interpreted as
76 76 a percentage of the swap
77 77 space available to the zone.
78 78 No suffix is interpreted as
79 79 bytes. In all cases, the
80 80 actual size of the file
81 81 system is the number of bytes
82 82 specified, rounded up to the
83 83 physical pagesize of the
84 84 system.
85 85
86 86
87 87 xattr | noxattr
88 88 Allow or disallow the
89 89 creation and manipulation of
90 90 extended attributes. The
91 91 default is xattr. See
92 92 fsattr(5) for a description
93 93 of extended attributes.
94 94
95 95
96 96
97 97 -O
98 98 Overlay mount. Allow the file system to be
99 99 mounted over an existing mount point, making the
100 100 underlying file system inaccessible. If a mount
101 101 is attempted on a pre-existing mount point
102 102 without setting this flag, the mount will fail,
103 103 producing the error: device busy.
104 104
105 105
106 106 FILES
107 107 /etc/mnttab
108 108 Table of mounted file systems
109 109
110 110
111 111 SEE ALSO
112 112 mount(1M), mkdir(2), mount(2), open(2), umount(2), mnttab(4),
113 113 attributes(5), fsattr(5), tmpfs(7FS)
114 114
115 115 NOTES
116 116 If the directory on which a file system is to be mounted is a symbolic
117 117 link, the file system is mounted on the directory to which the symbolic
118 118 link refers, rather than on top of the symbolic link itself.
119 119
120 120
121 121
122 122 March 18, 2015 MOUNT_TMPFS(1M)
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