1 .\" Copyright (c) 2003-2007 Tim Kientzle
2 .\" All rights reserved.
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25 .\" $FreeBSD: src/lib/libarchive/archive_entry.3,v 1.13 2007/03/03 07:37:36 kientzle Exp $
31 .Nm archive_entry_acl_add_entry ,
32 .Nm archive_entry_acl_add_entry_w ,
33 .Nm archive_entry_acl_clear ,
34 .Nm archive_entry_acl_count ,
35 .Nm archive_entry_acl_next ,
36 .Nm archive_entry_acl_next_w ,
37 .Nm archive_entry_acl_reset ,
38 .Nm archive_entry_acl_text_w ,
39 .Nm archive_entry_atime ,
40 .Nm archive_entry_atime_nsec ,
41 .Nm archive_entry_clear ,
42 .Nm archive_entry_clone ,
43 .Nm archive_entry_copy_fflags_text_w ,
44 .Nm archive_entry_copy_gname_w ,
45 .Nm archive_entry_copy_hardlink ,
46 .Nm archive_entry_copy_hardlink_w ,
47 .Nm archive_entry_copy_pathname_w ,
48 .Nm archive_entry_copy_stat ,
49 .Nm archive_entry_copy_symlink ,
50 .Nm archive_entry_copy_symlink_w ,
51 .Nm archive_entry_copy_uname_w ,
52 .Nm archive_entry_dev ,
53 .Nm archive_entry_fflags ,
54 .Nm archive_entry_fflags_text ,
55 .Nm archive_entry_free ,
56 .Nm archive_entry_gid ,
57 .Nm archive_entry_gname ,
58 .Nm archive_entry_hardlink ,
59 .Nm archive_entry_ino ,
60 .Nm archive_entry_mode ,
61 .Nm archive_entry_mtime ,
62 .Nm archive_entry_mtime_nsec ,
63 .Nm archive_entry_new ,
64 .Nm archive_entry_pathname ,
65 .Nm archive_entry_pathname_w ,
66 .Nm archive_entry_rdev ,
67 .Nm archive_entry_rdevmajor ,
68 .Nm archive_entry_rdevminor ,
69 .Nm archive_entry_set_fflags ,
70 .Nm archive_entry_set_gid ,
71 .Nm archive_entry_set_gname ,
72 .Nm archive_entry_set_hardlink ,
73 .Nm archive_entry_set_link ,
74 .Nm archive_entry_set_mode ,
75 .Nm archive_entry_set_mtime ,
76 .Nm archive_entry_set_pathname ,
77 .Nm archive_entry_set_rdevmajor ,
78 .Nm archive_entry_set_rdevminor ,
79 .Nm archive_entry_set_size ,
80 .Nm archive_entry_set_symlink ,
81 .Nm archive_entry_set_uid ,
82 .Nm archive_entry_set_uname ,
83 .Nm archive_entry_size ,
84 .Nm archive_entry_stat ,
85 .Nm archive_entry_symlink ,
86 .Nm archive_entry_uid ,
87 .Nm archive_entry_uname
88 .Nd functions for manipulating archive entry descriptions
92 .Fn archive_entry_acl_add_entry "struct archive_entry *" "int type" "int permset" "int tag" "int qual" "const char *name"
94 .Fn archive_entry_acl_add_entry_w "struct archive_entry *" "int type" "int permset" "int tag" "int qual" "const wchar_t *name"
96 .Fn archive_entry_acl_clear "struct archive_entry *"
98 .Fn archive_entry_acl_count "struct archive_entry *" "int type"
100 .Fn archive_entry_acl_next "struct archive_entry *" "int want_type" "int *type" "int *permset" "int *tag" "int *qual" "const char **name"
102 .Fn archive_entry_acl_next_w "struct archive_entry *" "int want_type" "int *type" "int *permset" "int *tag" "int *qual" "const wchar_t **name"
104 .Fn archive_entry_acl_reset "struct archive_entry *" "int want_type"
106 .Fn archive_entry_acl_text_w "struct archive_entry *" "int flags"
108 .Fn archive_entry_atime "struct archive_entry *"
110 .Fn archive_entry_atime_nsec "struct archive_entry *"
111 .Ft "struct archive_entry *"
112 .Fn archive_entry_clear "struct archive_entry *"
113 .Ft struct archive_entry *
114 .Fn archive_entry_clone "struct archive_entry *"
116 .Fn archive_entry_copy_fflags_text_w "struct archive_entry *" "const wchar_t *"
118 .Fn archive_entry_copy_gname_w "struct archive_entry *" "const wchar_t *"
120 .Fn archive_entry_copy_hardlink "struct archive_entry *" "const char *"
122 .Fn archive_entry_copy_hardlink_w "struct archive_entry *" "const wchar_t *"
124 .Fn archive_entry_copy_pathname_w "struct archive_entry *" "const wchar_t *"
126 .Fn archive_entry_copy_stat "struct archive_entry *" "const struct stat *"
128 .Fn archive_entry_copy_symlink "struct archive_entry *" "const char *"
130 .Fn archive_entry_copy_symlink_w "struct archive_entry *" "const wchar_t *"
132 .Fn archive_entry_copy_uname_w "struct archive_entry *" "const wchar_t *"
134 .Fn archive_entry_dev "struct archive_entry *"
136 .Fn archive_entry_fflags "struct archive_entry *" "unsigned long *set" "unsigned long *clear"
138 .Fn archive_entry_fflags_text "struct archive_entry *"
140 .Fn archive_entry_free "struct archive_entry *"
142 .Fn archive_entry_gname "struct archive_entry *"
144 .Fn archive_entry_hardlink "struct archive_entry *"
146 .Fn archive_entry_ino "struct archive_entry *"
148 .Fn archive_entry_mode "struct archive_entry *"
150 .Fn archive_entry_mtime "struct archive_entry *"
152 .Fn archive_entry_mtime_nsec "struct archive_entry *"
153 .Ft struct archive_entry *
154 .Fn archive_entry_new "void"
156 .Fn archive_entry_pathname "struct archive_entry *"
158 .Fn archive_entry_pathname_w "struct archive_entry *"
160 .Fn archive_entry_rdev "struct archive_entry *"
162 .Fn archive_entry_rdevmajor "struct archive_entry *"
164 .Fn archive_entry_rdevminor "struct archive_entry *"
166 .Fn archive_entry_set_fflags "struct archive_entry *" "unsigned long set" "unsigned long clear"
168 .Fn archive_entry_set_gid "struct archive_entry *" "gid_t"
170 .Fn archive_entry_set_gname "struct archive_entry *" "const char *"
172 .Fn archive_entry_set_hardlink "struct archive_entry *" "const char *"
174 .Fn archive_entry_set_link "struct archive_entry *" "const char *"
176 .Fn archive_entry_set_mode "struct archive_entry *" "mode_t"
178 .Fn archive_entry_set_mtime "struct archive_entry *" "time_t" "long nanos"
180 .Fn archive_entry_set_pathname "struct archive_entry *" "const char *"
182 .Fn archive_entry_set_rdevmajor "struct archive_entry *" "dev_t"
184 .Fn archive_entry_set_rdevminor "struct archive_entry *" "dev_t"
186 .Fn archive_entry_set_size "struct archive_entry *" "int64_t"
188 .Fn archive_entry_set_symlink "struct archive_entry *" "const char *"
190 .Fn archive_entry_set_uid "struct archive_entry *" "uid_t"
192 .Fn archive_entry_set_uname "struct archive_entry *" "const char *"
194 .Fn archive_entry_size "struct archive_entry *"
195 .Ft const struct stat *
196 .Fn archive_entry_stat "struct archive_entry *"
198 .Fn archive_entry_symlink "struct archive_entry *"
200 .Fn archive_entry_uname "struct archive_entry *"
202 These functions create and manipulate data objects that
203 represent entries within an archive.
205 .Tn struct archive_entry
206 as a heavy-duty version of
208 it includes everything from
210 plus associated pathname, textual group and user names, etc.
211 These objects are used by
213 to represent the metadata associated with a particular
215 .Ss Create and Destroy
216 There are functions to allocate, destroy, clear, and copy
219 .Bl -tag -compact -width indent
220 .It Fn archive_entry_clear
221 Erases the object, resetting all internal fields to the
222 same state as a newly-created object.
223 This is provided to allow you to quickly recycle objects
224 without thrashing the heap.
225 .It Fn archive_entry_clone
226 A deep copy operation; all text fields are duplicated.
227 .It Fn archive_entry_free
229 .Tn struct archive_entry
231 .It Fn archive_entry_new
232 Allocate and return a blank
233 .Tn struct archive_entry
236 .Ss Set and Get Functions
237 Most of the functions here set or read entries in an object.
238 Such functions have one of the following forms:
239 .Bl -tag -compact -width indent
240 .It Fn archive_entry_set_XXXX
241 Stores the provided data in the object.
242 In particular, for strings, the pointer is stored,
243 not the referenced string.
244 .It Fn archive_entry_copy_XXXX
245 As above, except that the referenced data is copied
247 .It Fn archive_entry_XXXX
248 Returns the specified data.
249 In the case of strings, a const-qualified pointer to
250 the string is returned.
252 String data can be set or accessed as wide character strings
256 The functions that use wide character strings are suffixed with
258 Note that these are different representations of the same data:
259 For example, if you store a narrow string and read the corresponding
260 wide string, the object will transparently convert formats
261 using the current locale.
262 Similarly, if you store a wide string and then store a
263 narrow string for the same data, the previously-set wide string will
264 be discarded in favor of the new data.
266 There are a few set/get functions that merit additional description:
267 .Bl -tag -compact -width indent
268 .It Fn archive_entry_set_link
269 This function sets the symlink field if it is already set.
270 Otherwise, it sets the hardlink field.
273 File flags are transparently converted between a bitmap
274 representation and a textual format.
275 For example, if you set the bitmap and ask for text, the library
276 will build a canonical text format.
277 However, if you set a text format and request a text format,
278 you will get back the same text, even if it is ill-formed.
279 If you need to canonicalize a textual flags string, you should first set the
280 text form, then request the bitmap form, then use that to set the bitmap form.
281 Setting the bitmap format will clear the internal text representation
282 and force it to be reconstructed when you next request the text form.
284 The bitmap format consists of two integers, one containing bits
285 that should be set, the other specifying bits that should be
287 Bits not mentioned in either bitmap will be ignored.
288 Usually, the bitmap of bits to be cleared will be set to zero.
289 In unusual circumstances, you can force a fully-specified set
290 of file flags by setting the bitmap of flags to clear to the complement
291 of the bitmap of flags to set.
294 which only includes names for set bits.)
295 Converting a bitmap to a textual string is a platform-specific
296 operation; bits that are not meaningful on the current platform
299 The canonical text format is a comma-separated list of flag names.
301 .Fn archive_entry_copy_fflags_text_w
302 function parses the provided text and sets the internal bitmap values.
303 This is a platform-specific operation; names that are not meaningful
304 on the current platform will be ignored.
305 The function returns a pointer to the start of the first name that was not
306 recognized, or NULL if every name was recognized.
307 Note that every name--including names that follow an unrecognized name--will
308 be evaluated, and the bitmaps will be set to reflect every name that is
310 (In particular, this differs from
312 which stops parsing at the first unrecognized name.)
314 XXX This needs serious help.
318 .Dq Access Control List
319 (ACL) is a list of permissions that grant access to particular users or
320 groups beyond what would normally be provided by standard POSIX mode bits.
321 The ACL handling here addresses some deficiencies in the POSIX.1e draft 17 ACL
323 In particular, POSIX.1e draft 17 specifies several different formats, but
324 none of those formats include both textual user/group names and numeric
327 XXX explain ACL stuff XXX
329 .\" .Sh RETURN VALUES
336 library first appeared in
342 library was written by
343 .An Tim Kientzle Aq kientzle@acm.org .