freebsd-dev/lib/libarchive/archive_entry.3

.\" Copyright (c) 2003-2004 Tim Kientzle
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.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_tartype
.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_tartype
.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_tartype "struct archive_entry *" "int"
.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 int
.Fn archive_entry_tartype "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.
.It Fn archive_entry_set_tartype
Sets the value to be used in a tar-format header
for this entry.
Client code should generally not set this; if it
is left unset, the library will automatically determine
an appropriate value.
.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