52 lines
1.3 KiB
Groff
52 lines
1.3 KiB
Groff
.TH MOUNT 2
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.SH NAME
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mount, umount \- mount or umount a file system
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.SH SYNOPSIS
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.ft B
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.nf
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#include <unistd.h>
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#include <sys/mount.h>
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int mount(char *\fIspecial\fP, char *\fIname\fP, int \fIflag\fP)
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int umount(char *\fIname\fP)
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.fi
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.ft P
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.SH DESCRIPTION
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.B Mount()
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tells the system that the file system
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.I special
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is to be mounted on the file
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.IR name ,
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effectively overlaying
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.I name
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with the file tree on
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.IR special .
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.I Name
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may of any type, except that if the root of
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.I special
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is a directory, then
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.I name
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must also be a directory.
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.I Special
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must be a block special file, except for loopback mounts. For loopback
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mounts a normal file or directory is used for
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.IR special ,
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which must be seen as the root of a virtual device.
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.I Flag
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is 0 for a read-write mount, 1 for read-only.
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.PP
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.B Umount()
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removes the connection between a device and a mount point,
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.I name
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may refer to either of them. If more than one device is mounted on the
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same mount point then unmounting at the mount point removes the last mounted
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device, unmounting a device removes precisely that device. The unmount will
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only succeed if none of the files on the device are in use.
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.PP
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Both calls may only be executed by the super-user.
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.SH "SEE ALSO"
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.BR mount (1),
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.BR umount (1).
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.SH AUTHOR
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Kees J. Bot (kjb@cs.vu.nl)
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