3700c24576
behaviour of returning EINVAL when ".." is passed as either argument
has been restored.
rmdir("..") now returns EINVAL instead of EPERM. Document the
previously undocumented behaviour of rmdir(".") returning EINVAL
as required by POSIX and SUSv3. Bump the man page change date.
undelete("..") now returns EINVAL instead of EPERM. Bump the man
page change date.
MFC after: 3 days
216 lines
5.7 KiB
Groff
216 lines
5.7 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)rename.2 8.1 (Berkeley) 6/4/93
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.\" $FreeBSD$
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.\"
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.Dd June 4, 1993
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.Dt RENAME 2
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.Os
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.Sh NAME
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.Nm rename
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.Nd change the name of a file
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In stdio.h
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.Ft int
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.Fn rename "const char *from" "const char *to"
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.Sh DESCRIPTION
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The
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.Fn rename
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system call
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causes the link named
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.Fa from
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to be renamed as
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.Fa to .
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If
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.Fa to
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exists, it is first removed.
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Both
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.Fa from
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and
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.Fa to
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must be of the same type (that is, both directories or both
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non-directories), and must reside on the same file system.
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.Pp
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The
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.Fn rename
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system call
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guarantees that if
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.Fa to
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already exists, an instance of
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.Fa to
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will always exist, even if the system should crash in
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the middle of the operation.
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.Pp
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If the final component of
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.Fa from
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is a symbolic link,
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the symbolic link is renamed,
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not the file or directory to which it points.
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.\".Sh CAVEAT
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.\"The system can deadlock if a loop in the file system graph is present.
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.\"This loop takes the form of an entry in directory
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.\".Pa a ,
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.\"say
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.\".Pa a/foo ,
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.\"being a hard link to directory
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.\".Pa b ,
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.\"and an entry in
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.\"directory
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.\".Pa b ,
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.\"say
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.\".Pa b/bar ,
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.\"being a hard link
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.\"to directory
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.\".Pa a .
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.\"When such a loop exists and two separate processes attempt to
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.\"perform
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.\".Ql rename a/foo b/bar
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.\"and
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.\".Ql rename b/bar a/foo ,
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.\"respectively,
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.\"the system may deadlock attempting to lock
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.\"both directories for modification.
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.\"Hard links to directories should be
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.\"replaced by symbolic links by the system administrator.
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.Sh RETURN VALUES
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.Rv -std rename
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.Sh ERRORS
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The
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.Fn rename
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system call
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will fail and neither of the argument files will be
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affected if:
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.Bl -tag -width Er
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.It Bq Er ENAMETOOLONG
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A component of either pathname exceeded 255 characters,
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or the entire length of either path name exceeded 1023 characters.
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.It Bq Er ENOENT
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A component of the
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.Fa from
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path does not exist,
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or a path prefix of
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.Fa to
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does not exist.
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.It Bq Er EACCES
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A component of either path prefix denies search permission.
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.It Bq Er EACCES
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The requested link requires writing in a directory with a mode
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that denies write permission.
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.It Bq Er EPERM
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The directory containing
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.Fa from
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is marked sticky,
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and neither the containing directory nor
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.Fa from
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are owned by the effective user ID.
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.It Bq Er EPERM
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The file pointed at by the
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.Fa to
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argument
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exists,
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the directory containing
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.Fa to
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is marked sticky,
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and neither the containing directory nor
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.Fa to
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are owned by the effective user ID.
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.It Bq Er ELOOP
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Too many symbolic links were encountered in translating either pathname.
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.It Bq Er ENOTDIR
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A component of either path prefix is not a directory.
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.It Bq Er ENOTDIR
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The
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.Fa from
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argument
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is a directory, but
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.Fa to
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is not a directory.
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.It Bq Er EISDIR
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The
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.Fa to
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argument
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is a directory, but
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.Fa from
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is not a directory.
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.It Bq Er EXDEV
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The link named by
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.Fa to
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and the file named by
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.Fa from
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are on different logical devices (file systems).
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Note that this error
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code will not be returned if the implementation permits cross-device
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links.
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.It Bq Er ENOSPC
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The directory in which the entry for the new name is being placed
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cannot be extended because there is no space left on the file
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system containing the directory.
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.It Bq Er EDQUOT
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The directory in which the entry for the new name
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is being placed cannot be extended because the
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user's quota of disk blocks on the file system
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containing the directory has been exhausted.
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.It Bq Er EIO
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An I/O error occurred while making or updating a directory entry.
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.It Bq Er EROFS
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The requested link requires writing in a directory on a read-only file
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system.
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.It Bq Er EFAULT
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Path
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points outside the process's allocated address space.
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.It Bq Er EINVAL
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The
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.Fa from
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argument
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is a parent directory of
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.Fa to ,
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or an attempt is made to rename
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.Ql .\&
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or
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.Ql \&.. .
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.It Bq Er ENOTEMPTY
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The
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.Fa to
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argument
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is a directory and is not empty.
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.El
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.Sh SEE ALSO
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.Xr open 2 ,
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.Xr symlink 7
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.Sh STANDARDS
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The
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.Fn rename
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system call is expected to conform to
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.St -p1003.1-96 .
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