xref: /freebsd/contrib/libarchive/libarchive/archive_entry.3 (revision a03411e84728e9b267056fd31c7d1d9d1dc1b01e)
1.\" Copyright (c) 2003-2007 Tim Kientzle
2.\" Copyright (c) 2010 Joerg Sonnenberger
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26.\" $FreeBSD$
27.\"
28.Dd February 2, 2012
29.Dt ARCHIVE_ENTRY 3
30.Os
31.Sh NAME
32.Nm archive_entry_clear ,
33.Nm archive_entry_clone ,
34.Nm archive_entry_free ,
35.Nm archive_entry_new
36.Nd functions for managing archive entry descriptions
37.Sh LIBRARY
38Streaming Archive Library (libarchive, -larchive)
39.Sh SYNOPSIS
40.In archive_entry.h
41.Ft "struct archive_entry *"
42.Fn archive_entry_clear "struct archive_entry *"
43.Ft struct archive_entry *
44.Fn archive_entry_clone "struct archive_entry *"
45.Ft void
46.Fn archive_entry_free "struct archive_entry *"
47.Ft struct archive_entry *
48.Fn archive_entry_new "void"
49.Sh DESCRIPTION
50These functions create and manipulate data objects that
51represent entries within an archive.
52You can think of a
53.Tn struct archive_entry
54as a heavy-duty version of
55.Tn struct stat :
56it includes everything from
57.Tn struct stat
58plus associated pathname, textual group and user names, etc.
59These objects are used by
60.Xr libarchive 3
61to represent the metadata associated with a particular
62entry in an archive.
63.Ss Create and Destroy
64There are functions to allocate, destroy, clear, and copy
65.Va archive_entry
66objects:
67.Bl -tag -compact -width indent
68.It Fn archive_entry_clear
69Erases the object, resetting all internal fields to the
70same state as a newly-created object.
71This is provided to allow you to quickly recycle objects
72without thrashing the heap.
73.It Fn archive_entry_clone
74A deep copy operation; all text fields are duplicated.
75.It Fn archive_entry_free
76Releases the
77.Tn struct archive_entry
78object.
79.It Fn archive_entry_new
80Allocate and return a blank
81.Tn struct archive_entry
82object.
83.El
84.Ss Function groups
85Due to high number of functions, the accessor functions can be found in
86man pages grouped by the purpose.
87.Bl -tag -width ".Xr archive_entry_perms 3"
88.It Xr archive_entry_acl 3
89Access Control List manipulation
90.It Xr archive_entry_paths 3
91Path name manipulation
92.It Xr archive_entry_perms 3
93User, group and mode manipulation
94.It Xr archive_entry_stat 3
95Functions not in the other groups and copying to/from
96.Vt struct stat .
97.It Xr archive_entry_time 3
98Time field manipulation
99.El
100.Pp
101Most of the functions set or read entries in an object.
102Such functions have one of the following forms:
103.Bl -tag -compact -width indent
104.It Fn archive_entry_set_XXXX
105Stores the provided data in the object.
106In particular, for strings, the pointer is stored,
107not the referenced string.
108.It Fn archive_entry_copy_XXXX
109As above, except that the referenced data is copied
110into the object.
111.It Fn archive_entry_XXXX
112Returns the specified data.
113In the case of strings, a const-qualified pointer to
114the string is returned.
115.El
116String data can be set or accessed as wide character strings
117or normal
118.Va char
119strings.
120The functions that use wide character strings are suffixed with
121.Cm _w .
122Note that these are different representations of the same data:
123For example, if you store a narrow string and read the corresponding
124wide string, the object will transparently convert formats
125using the current locale.
126Similarly, if you store a wide string and then store a
127narrow string for the same data, the previously-set wide string will
128be discarded in favor of the new data.
129.\" .Sh EXAMPLE
130.\" .Sh RETURN VALUES
131.\" .Sh ERRORS
132.Sh SEE ALSO
133.Xr archive_entry_acl 3 ,
134.Xr archive_entry_paths 3 ,
135.Xr archive_entry_perms 3 ,
136.Xr archive_entry_time 3 ,
137.Xr libarchive 3
138.Sh HISTORY
139The
140.Nm libarchive
141library first appeared in
142.Fx 5.3 .
143.Sh AUTHORS
144.An -nosplit
145The
146.Nm libarchive
147library was written by
148.An Tim Kientzle Aq kientzle@acm.org .
149.\" .Sh BUGS
150