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| [9] | 1 | .TH MOUNT 2
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| 2 | .SH NAME
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| 3 | mount, umount \- mount or umount a file system
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| 4 | .SH SYNOPSIS
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| 5 | .ft B
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| 6 | .nf
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| 7 | #include <unistd.h>
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| 8 | #include <sys/mount.h>
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| 9 |
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| 10 | int mount(char *\fIspecial\fP, char *\fIname\fP, int \fIflag\fP)
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| 11 | int umount(char *\fIname\fP)
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| 12 | .fi
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| 13 | .ft P
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| 14 | .SH DESCRIPTION
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| 15 | .B Mount()
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| 16 | tells the system that the file system
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| 17 | .I special
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| 18 | is to be mounted on the file
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| 19 | .IR name ,
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| 20 | effectively overlaying
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| 21 | .I name
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| 22 | with the file tree on
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| 23 | .IR special .
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| 24 | .I Name
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| 25 | may of any type, except that if the root of
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| 26 | .I special
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| 27 | is a directory, then
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| 28 | .I name
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| 29 | must also be a directory.
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| 30 | .I Special
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| 31 | must be a block special file, except for loopback mounts. For loopback
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| 32 | mounts a normal file or directory is used for
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| 33 | .IR special ,
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| 34 | which must be seen as the root of a virtual device.
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| 35 | .I Flag
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| 36 | is 0 for a read-write mount, 1 for read-only.
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| 37 | .PP
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| 38 | .B Umount()
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| 39 | removes the connection between a device and a mount point,
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| 40 | .I name
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| 41 | may refer to either of them. If more than one device is mounted on the
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| 42 | same mount point then unmounting at the mount point removes the last mounted
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| 43 | device, unmounting a device removes precisely that device. The unmount will
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| 44 | only succeed if none of the files on the device are in use.
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| 45 | .PP
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| 46 | Both calls may only be executed by the super-user.
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| 47 | .SH "SEE ALSO"
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| 48 | .BR mount (1),
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| 49 | .BR umount (1).
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| 50 | .SH AUTHOR
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| 51 | Kees J. Bot (kjb@cs.vu.nl)
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