path: root/lib/libarchive/archive_entry.3

.\" Copyright (c) 2003-2004 Tim Kientzle
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd December 15, 2003
.Dt archive_entry 3
.Os
.Sh NAME
.Nm archive_entry_clear
.Nm archive_entry_clone
.Nm archive_entry_copy_gname_w
.Nm archive_entry_copy_hardlink_w
.Nm archive_entry_copy_pathname_w
.Nm archive_entry_copy_stat
.Nm archive_entry_copy_symlink_w
.Nm archive_entry_copy_uname_w
.Nm archive_entry_free
.Nm archive_entry_gname
.Nm archive_entry_gname_w
.Nm archive_entry_hardlink
.Nm archive_entry_hardlink_w
.Nm archive_entry_new
.Nm archive_entry_pathname
.Nm archive_entry_pathname_w
.Nm archive_entry_set_devmajor
.Nm archive_entry_set_devminor
.Nm archive_entry_set_gid
.Nm archive_entry_set_gname
.Nm archive_entry_set_hardlink
.Nm archive_entry_set_mode
.Nm archive_entry_set_pathname
.Nm archive_entry_set_symlink
.Nm archive_entry_set_uid
.Nm archive_entry_set_uname
.Nm archive_entry_size
.Nm archive_entry_stat
.Nm archive_entry_symlink
.Nm archive_entry_symlink_w
.Nm archive_entry_uname
.Nm archive_entry_uname_w
.Nd functions for manipulating archive entry descriptions
.Sh SYNOPSIS
.In archive_entry.h
.Ft void
.Fn archive_entry_clear "struct archive_entry *"
.Ft struct archive_entry *
.Fn archive_entry_clone "struct archive_entry *"
.Ft void
.Fn archive_entry_copy_gname_w "struct archive_entry *" "const wchar_t *"
.Ft void
.Fn archive_entry_copy_hardlink_w "struct archive_entry *" "const wchar_t *"
.Ft void
.Fn archive_entry_copy_pathname_w "struct archive_entry *" "const wchar_t *"
.Ft void
.Fn archive_entry_copy_stat "struct archive_entry *" "struct stat *"
.Ft void
.Fn archive_entry_copy_symlink_w "struct archive_entry *" "const wchar_t *"
.Ft void
.Fn archive_entry_copy_uname_w "struct archive_entry *" "const wchar_t *"
.Ft void
.Fn archive_entry_free "struct archive_entry *"
.Ft const char *
.Fn archive_entry_gname "struct archive_entry *"
.Ft const wchar_t *
.Fn archive_entry_gname_w "struct archive_entry *"
.Ft const char *
.Fn archive_entry_hardlink "struct archive_entry *"
.Ft const wchar_t *
.Fn archive_entry_hardlink_w "struct archive_entry *"
.Ft struct archive_entry *
.Fn archive_entry_new "void"
.Ft const char *
.Fn archive_entry_pathname "struct archive_entry *"
.Ft const wchar_t *
.Fn archive_entry_pathname_w "struct archive_entry *"
.Ft void
.Fn archive_entry_set_devmajor "struct archive_entry *" "dev_t"
.Ft void
.Fn archive_entry_set_devminor "struct archive_entry *" "dev_t"
.Ft void
.Fn archive_entry_set_gid "struct archive_entry *" "gid_t"
.Ft void
.Fn archive_entry_set_gname "struct archive_entry *" "const char *"
.Ft void
.Fn archive_entry_set_hardlink "struct archive_entry *" "const char *"
.Ft void
.Fn archive_entry_set_mode "struct archive_entry *" "mode_t"
.Ft void
.Fn archive_entry_set_pathname "struct archive_entry *" "const char *"
.Ft void
.Fn archive_entry_set_symlink "struct archive_entry *" "const char *"
.Ft void
.Fn archive_entry_set_uid "struct archive_entry *" "uid_t"
.Ft void
.Fn archive_entry_set_uname "struct archive_entry *" "const char *"
.Ft int64_t
.Fn archive_entry_size "struct archive_entry *"
.Ft const struct stat *
.Fn archive_entry_stat "struct archive_entry *"
.Ft const char *
.Fn archive_entry_symlink "struct archive_entry *"
.Ft const wchar_t *
.Fn archive_entry_symlink_w "struct archive_entry *"
.Ft const char *
.Fn archive_entry_uname "struct archive_entry *"
.Ft const wchar_t *
.Fn archive_entry_uname_w "struct archive_entry *"
.Sh DESCRIPTION
These functions create and manipulate data objects that
represent entries within an archive.
You can think of a
.Tn struct archive_entry
as a heavy-duty version of
.Tn struct stat :
it includes everything from
.Tn struct stat
plus associated pathname, textual group and user names, etc.
These objects are used by
.Xr libarchive 3
to represent the metadata associated with a particular
entry in an archive.
.Pp
Most of the functions here set or read entries
in an object.  Such functions have one of the
following forms:
.Bl -tag -compact -width indent
.It Fn archive_entry_set_XXXX
Stores the provided data in the object.
In particular, for strings, the pointer is stored,
not the referenced string.
.It Fn archive_entry_copy_XXXX
As above, except that the referenced data is copied
into the object.
.It Fn archive_entry_XXXX
Returns the specified data.
In the case of strings, a const-qualified pointer to
the string is returned.
.El
The string data can be accessed as wide character strings
(which are suffixed with
.Cm _w )
or normal
.Va char
strings.
Note that these are different representations of the same
data:
For example, if you store a narrow string and read the corresponding
wide string, the object will transparently convert formats
using the current locale.
Similarly, if you store a wide string and then store a
narrow string for the same data, the previously-set wide string will
be discarded in favor of the new data.
.Pp
The remaining functions allocate, destroy, clear, and copy
.Va archive_entry
objects.
These functions are described below:
.Bl -tag -compact -width indent
.It Fn archive_entry_clear
Erases the object, resetting all internal fields to the
same state as a newly-created object.
This is provided to allow you to quickly recycle objects
without thrashing the heap.
.It Fn archive_entry_clone
A deep copy operation; all text fields are duplicated.
.It Fn archive_entry_free
Releases the
.Tn struct archive_entry
object.
.It Fn archive_entry_new
Allocate and return a blank
.Tn struct archive_entry
object.
.El
.\" .Sh EXAMPLE
.\" .Sh RETURN VALUES
.\" .Sh ERRORS
.Sh SEE ALSO
.Xr archive 3
.Sh HISTORY
The
.Nm libarchive
library first appeared in
.Fx 5.3 .
.Sh AUTHORS
.An -nosplit
The
.Nm libarchive
library was written by
.An Tim Kientzle Aq kientzle@acm.org .
.\" .Sh BUGS