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mount(2) [v7 man page]

MOUNT(2)							System Calls Manual							  MOUNT(2)

NAME
mount, umount - mount or remove file system SYNOPSIS
mount(special, name, rwflag) char *special, *name; umount(special) char *special; DESCRIPTION
Mount announces to the system that a removable file system has been mounted on the block-structured special file special; from now on, ref- erences to file name will refer to the root file on the newly mounted file system. Special and name are pointers to null-terminated strings containing the appropriate path names. Name must exist already. Name must be a directory (unless the root of the mounted file system is not a directory). Its old contents are inaccessible while the file system is mounted. The rwflag argument determines whether the file system can be written on; if it is 0 writing is allowed, if non-zero no writing is done. Physically write-protected and magnetic tape file systems must be mounted read-only or errors will occur when access times are updated, whether or not any explicit write is attempted. Umount announces to the system that the special file is no longer to contain a removable file system. The associated file reverts to its ordinary interpretation. SEE ALSO
mount(1) DIAGNOSTICS
Mount returns 0 if the action occurred; -1 if special is inaccessible or not an appropriate file; if name does not exist; if special is already mounted; if name is in use; or if there are already too many file systems mounted. Umount returns 0 if the action occurred; -1 if if the special file is inaccessible or does not have a mounted file system, or if there are active files in the mounted file system. ASSEMBLER
(mount = 21.) sys mount; special; name; rwflag (umount = 22.) sys umount; special MOUNT(2)

Check Out this Related Man Page

mount(8)						      System Manager's Manual							  mount(8)

Name
       mount, umount - mount or unmount file systems

Syntax
       /etc/mount [ options ] [ device ] [ directory ]

       /etc/umount [ options ] [ device ] [ directory ]

Description
       This  is  a  general description of the command.  Additional descriptions are provided to define the syntax and options for the NFS and UFS
       file systems.

       Each invocation of the command announces to the system that a file system is present on the device device.  The file system may be local or
       remote.	File directory must exist as a directory file.	It becomes the name of the newly mounted file system root.

       If invoked without arguments, prints the list of mounted file systems.

       Physically write-protected disks and magnetic tape file systems must be mounted read-only or an error will occur at mount time.

       General users can only mount file systems with certain restrictions.  For example, the user, other than the superuser, performing the mount
       must own the directory directory.  Furthermore, no users other than the superuser can execute or programs on the mounted file systems.	In
       addition, users other than the superuser cannot access block or special character devices such as on the mounted file systems.

       The  command  announces	to the system that the removable file system previously mounted on the specified directory is to be removed.  Only
       the person who mounted a particular file system or the superuser can unmount the file system again.

Options
       -a	   Reads the file and mounts, or unmounts, all file systems listed there.

       -f	   Fast unmount.  The option has no meaning for local file systems and directories.  However, for remote file system  types  (such
		   as  NFS),  the  option  causes  the	client	to unmount the remotely mounted file systems and directories without notifying the
		   server.  This can avoid the delay of waiting for acknowledgment from a server that is down.

       -o options  Specifies a string that is passed to the kernel and used by the specific file system's mount routine in the kernel.	 For  spe-
		   cific options, refer to the file system-specific description, such as

       -r	   Indicates  that  the  file system is to be mounted read only. To share a disk, each host must mount the file system with the -r
		   option.

       -t type	   Specifies the type of file system is being mounted.	When used with the option, the option mounts all file systems of the given
		   type found in the file.  For specific file system types, refer to the file system-specific description, such as

       -v	   Tells what did or did not happen.  (Verbose flag)

       The options for are:

       -a	   Unmounts all mounted file systems.  It may be necessary to execute twice to accomplish unmounting of all mounted file systems.

       -v	   Tells what did or did not happen.  (Verbose flag)

Restrictions
       Mounting corrupted file systems will crash the system.

Files
       File systems information table

See Also
       getmnt(2), mount(2), fstab(5), fsck(8), mount(8nfs), mount(8ufs)

																	  mount(8)
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