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.IX Title "File::lchown 3pm"
.TH File::lchown 3pm 2024-03-07 "perl v5.38.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH NAME
"File::lchown" \- modify attributes of symlinks without dereferencing them
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& use File::lchown qw( lchown lutimes );
\&
\& lchown $uid, $gid, $linkpath or die "Cannot lchown() \- $!";
\&
\& lutimes $atime, $mtime, $linkpath or die "Cannot lutimes() \- $!";
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The regular \f(CW\*(C`chown\*(C'\fR system call will dereference a symlink and apply
ownership changes to the file at which it points. Some OSes provide system
calls that do not dereference a symlink but instead apply their changes
directly to the named path, even if that path is a symlink (in much the same
way that \f(CW\*(C`lstat\*(C'\fR will return attributes of a symlink rather than the file at
which it points).
.SH FUNCTIONS
.IX Header "FUNCTIONS"
.ie n .SS "$count = lchown $uid, $gid, @paths"
.el .SS "\f(CW$count\fP = lchown \f(CW$uid\fP, \f(CW$gid\fP, \f(CW@paths\fP"
.IX Subsection "$count = lchown $uid, $gid, @paths"
Set the new user or group ownership of the specified paths, without
dereferencing any symlinks. Passing the value \f(CW\-1\fR as either the \f(CW$uid\fR or
\&\f(CW$gid\fR will leave that attribute unchanged. Returns the number of files
successfully changed.
.ie n .SS "$count = lutimes $atime, $mtime, @paths"
.el .SS "\f(CW$count\fP = lutimes \f(CW$atime\fP, \f(CW$mtime\fP, \f(CW@paths\fP"
.IX Subsection "$count = lutimes $atime, $mtime, @paths"
Set the access and modification times on the specified paths, without
dereferencing any symlinks. Passing \f(CW\*(C`undef\*(C'\fR as both \f(CW$atime\fR and \f(CW$mtime\fR
will update the times to the current system time.
.PP
Note that for both \f(CW\*(C`lchown\*(C'\fR and \f(CW\*(C`lutimes\*(C'\fR, if more than one path is given,
if later paths succeed after earlier failures, then the value of \f(CW$!\fR will
not be reliable to indicate the nature of the failure. If you wish to use
\&\f(CW$!\fR to report on failures, make sure only to pass one path at a time.
.SH TODO
.IX Header "TODO"
.IP \(bu 4
Implement sub-second precision on \f(CW\*(C`lutimes\*(C'\fR, most likely by taking floats or
two-element ARRAY refs, similar to \f(CW\*(C`Time::HiRes\*(C'\fR uses.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP \(bu 4
\&\f(CWlchown(2)\fR \- change ownership of a file
.IP \(bu 4
\&\f(CWlutimes(2)\fR \- change file timestamps
.SH AUTHOR
.IX Header "AUTHOR"
Paul Evans <leonerd@leonerd.org.uk>