ARCHIVE_ENTRY_PERMS(3)	 BSD Library Functions Manual	ARCHIVE_ENTRY_PERMS(3)

NAME

     archive_entry_gid, archive_entry_set_gid, archive_entry_uid,

     archive_entry_set_uid, archive_entry_perm, archive_entry_set_perm,

     archive_entry_strmode, archive_entry_uname, archive_entry_uname_w,

     archive_entry_set_uname, archive_entry_copy_uname,

     archive_entry_copy_uname_w, archive_entry_update_uname_utf8,

     archive_entry_gname, archive_entry_gname_w, archive_entry_set_gname,

     archive_entry_copy_gname, archive_entry_copy_gname_w,

     archive_entry_update_gname_utf8, archive_entry_fflags,

     archive_entry_fflags_text, archive_entry_set_fflags,

     archive_entry_copy_fflags_text, archive_entry_copy_fflags_text_w — func‐

     tions for manipulating ownership and permissions in archive entry

     descriptions

LIBRARY

     Streaming Archive Library (libarchive, -larchive)

SYNOPSIS

     #include <archive_entry.h>

     gid_t

     archive_entry_gid(struct archive_entry *a);

     void

     archive_entry_set_gid(struct archive_entry *a, gid_t gid);

     uid_t

     archive_entry_uid(struct archive_entry *a);

     void

     archive_entry_set_uid(struct archive_entry *a, uid_t uid);

     mode_t

     archive_entry_perm(struct archive_entry *a);

     void

     archive_entry_set_perm(struct archive_entry *a, mode_t mode);

     const char *

     archive_entry_strmode(struct archive_entry *a);

     const char *

     archive_entry_gname(struct archive_entry *a);

     const wchar_t *

     archive_entry_gname_w(struct archive_entry *a);

     void

     archive_entry_set_gname(struct archive_entry *a, const char *a);

     void

     archive_entry_copy_gname(struct archive_entry *a, const char *name);

     void

     archive_entry_copy_gname_w(struct archive_entry *a, const wchar_t *name);

     int

     archive_entry_update_gname_utf8(struct archive_entry *a,

	 const char *name);

     const char *

     archive_entry_uname(struct archive_entry *a);

     const wchar_t *

     archive_entry_uname_w(struct archive_entry *a);

     void

     archive_entry_set_uname(struct archive_entry *a, const char *name);

     void

     archive_entry_copy_uname(struct archive_entry *a, const char *name);

     void

     archive_entry_copy_uname_w(struct archive_entry *a, const wchar_t *name);

     int

     archive_entry_update_uname_utf8(struct archive_entry *a,

	 const char *name);

     void

     archive_entry_fflags(struct archive_entry *a, unsigned long *set_bits,

	 unsigned long *clear_bits);

     const char *

     archive_entry_fflags_text(struct archive_entry *a);

     void

     archive_entry_set_fflags(struct archive_entry *a, unsigned long set_bits,

	 unsigned long clear_bits);

     const char *

     archive_entry_copy_fflags_text(struct archive_entry *a,

	 const char *text);

     const wchar_t *

     archive_entry_copy_fflags_text_w(struct archive_entry *a,

	 const wchar_t *text);

DESCRIPTION

   User id, group id and mode

     The functions archive_entry_uid(), archive_entry_gid(), and

     archive_entry_perm() can be used to extract the user id, group id and

     permission from the given entry.  The corresponding functions

     archive_entry_set_uid(), archive_entry_set_gid(), and

     archive_entry_set_perm() store the given user id, group id and permission

     in the entry.  The permission is also set as side effect of calling

     archive_entry_set_mode().

     archive_entry_strmode() returns a string representation of the permission

     as used by the long mode of ls(1).

   User and group name

     User and group names can be provided in one of three different ways:

     char *	Multibyte strings in the current locale.

     wchar_t *	Wide character strings in the current locale.  The accessor

		functions are named XXX_w().

     UTF-8	Unicode strings encoded as UTF-8.  This are convience func‐

		tions to update both the multibyte and wide character strings

		at the same time.

     archive_entry_set_XXX() is an alias for archive_entry_copy_XXX().

   File Flags

     File flags are transparently converted between a bitmap representation

     and a textual format.  For example, if you set the bitmap and ask for

     text, the library will build a canonical text format.  However, if you

     set a text format and request a text format, you will get back the same

     text, even if it is ill-formed.  If you need to canonicalize a textual

     flags string, you should first set the text form, then request the bitmap

     form, then use that to set the bitmap form.  Setting the bitmap format

     will clear the internal text representation and force it to be recon‐

     structed when you next request the text form.

     The bitmap format consists of two integers, one containing bits that

     should be set, the other specifying bits that should be cleared.  Bits

     not mentioned in either bitmap will be ignored.  Usually, the bitmap of

     bits to be cleared will be set to zero.  In unusual circumstances, you

     can force a fully-specified set of file flags by setting the bitmap of

     flags to clear to the complement of the bitmap of flags to set.  (This

     differs from fflagstostr(3), which only includes names for set bits.)

     Converting a bitmap to a textual string is a platform-specific operation;

     bits that are not meaningful on the current platform will be ignored.

     The canonical text format is a comma-separated list of flag names.  The

     archive_entry_copy_fflags_text() and archive_entry_copy_fflags_text_w()

     functions parse the provided text and sets the internal bitmap values.

     This is a platform-specific operation; names that are not meaningful on

     the current platform will be ignored.  The function returns a pointer to

     the start of the first name that was not recognized, or NULL if every

     name was recognized.  Note that every name — including names that follow

     an unrecognized name — will be evaluated, and the bitmaps will be set to

     reflect every name that is recognized.  (In particular, this differs from

     strtofflags(3), which stops parsing at the first unrecognized name.)

SEE ALSO

     archive_entry(3), archive_entry_acl(3), archive_read_disk(3),

     archive_write_disk(3) libarchive(3),

BUGS

     The platform types uid_t and gid_t are often 16 or 32 bit wide.  In this

     case it is possible that the ids can not be correctly restored from ar‐

     chives and get truncated.

BSD			       February 2, 2012 			   BSD