NAME
archive_entry_stat
,
archive_entry_copy_stat
,
archive_entry_filetype
,
archive_entry_set_filetype
,
archive_entry_mode
,
archive_entry_set_mode
,
archive_entry_size
,
archive_entry_size_is_set
,
archive_entry_set_size
,
archive_entry_unset_size
,
archive_entry_dev
,
archive_entry_set_dev
,
archive_entry_dev_is_set
,
archive_entry_devmajor
,
archive_entry_set_devmajor
,
archive_entry_devminor
,
archive_entry_set_devminor
,
archive_entry_ino
,
archive_entry_set_ino
,
archive_entry_ino_is_set
,
archive_entry_ino64
,
archive_entry_set_ino64
,
archive_entry_nlink
,
archive_entry_rdev
,
archive_entry_set_rdev
,
archive_entry_rdevmajor
,
archive_entry_set_rdevmajor
,
archive_entry_rdevminor
,
archive_entry_set_rdevminor
—
accessor functions for manipulating
archive entry descriptions
LIBRARY
Streaming Archive Library (libarchive, -larchive)
SYNOPSIS
#include
<archive_entry.h>
const struct stat *
archive_entry_stat
(struct
archive_entry *a);
void
archive_entry_copy_stat
(struct
archive_entry *a, const
struct stat *sb);
mode_t
archive_entry_filetype
(struct
archive_entry *a);
void
archive_entry_set_filetype
(struct
archive_entry *a,
unsigned int type);
mode_t
archive_entry_mode
(struct
archive_entry *a);
void
archive_entry_set_mode
(struct
archive_entry *a, mode_t
mode);
int64_t
archive_entry_size
(struct
archive_entry *a);
int
archive_entry_size_is_set
(struct
archive_entry *a);
void
archive_entry_set_size
(struct
archive_entry *a, int64_t
size);
void
archive_entry_unset_size
(struct
archive_entry *a);
dev_t
archive_entry_dev
(struct
archive_entry *a);
void
archive_entry_set_dev
(struct
archive_entry *a, dev_t
dev);
int
archive_entry_dev_is_set
(struct
archive_entry *a);
dev_t
archive_entry_devmajor
(struct
archive_entry *a);
void
archive_entry_set_devmajor
(struct
archive_entry *a, dev_t
major);
dev_t
archive_entry_devminor
(struct
archive_entry *a);
void
archive_entry_set_devminor
(struct
archive_entry *a, dev_t
minor);
ino_t
archive_entry_ino
(struct
archive_entry *a);
void
archive_entry_set_ino
(struct
archive_entry *a,
unsigned long ino);
int
archive_entry_ino_is_set
(struct
archive_entry *a);
int64_t
archive_entry_ino64
(struct
archive_entry *a);
void
archive_entry_set_ino64
(struct
archive_entry *a, int64_t
ino);
unsigned int
archive_entry_nlink
(struct
archive_entry *a);
void
archive_entry_set_nlink
(struct
archive_entry *a,
unsigned int count);
dev_t
archive_entry_rdev
(struct
archive_entry *a);
dev_t
archive_entry_rdevmajor
(struct
archive_entry *a);
dev_t
archive_entry_rdevminor
(struct
archive_entry *a);
void
archive_entry_set_rdev
(struct
archive_entry *a, dev_t
dev);
void
archive_entry_set_rdevmajor
(struct
archive_entry *a, dev_t
major);
void
archive_entry_set_rdevminor
(struct
archive_entry *a, dev_t
minor);
DESCRIPTION
Copying to and from struct stat
The function
archive_entry_stat
()
converts the various fields stored in the archive entry to the format used
by stat(2). The return value remains valid until either
archive_entry_clear
()
or
archive_entry_free
()
is called. It is not affected by calls to the set accessor functions. It
currently sets the following values in struct stat:
st_atime, st_ctime,
st_dev, st_gid,
st_ino, st_mode,
st_mtime, st_nlink,
st_rdev, st_size,
st_uid. In addition,
st_birthtime and high-precision information for
time-related fields will be included on platforms that support it.
The function
archive_entry_copy_stat
()
copies fields from the platform's struct stat. Fields
not provided by struct stat are unchanged.
General accessor functions
The functions
archive_entry_filetype
()
and
archive_entry_set_filetype
()
get respectively set the filetype. The file type is one of the following
constants:
- AE_IFREG
- Regular file
- AE_IFLNK
- Symbolic link
- AE_IFSOCK
- Socket
- AE_IFCHR
- Character device
- AE_IFBLK
- Block device
- AE_IFDIR
- Directory
- AE_IFIFO
- Named pipe (fifo)
The functions
archive_entry_mode
()
and
archive_entry_set_mode
()
get/set a combination of file type and permissions and provide the
equivalent of st_mode. Use of
archive_entry_filetype
() and
archive_entry_perm
()
for getting and archive_entry_set_filetype
() and
archive_entry_set_perm
()
for setting is recommended.
The function
archive_entry_size
()
returns the file size, if it has been set, and 0 otherwise.
archive_entry_size
() can be used to query that
status.
archive_entry_set_size
()
and
archive_entry_unset_size
()
set and unset the size, respectively.
The number of references (hardlinks) can
be obtained by calling
archive_entry_nlinks
()
and set with
archive_entry_set_nlinks
().
Identifying unique files
The functions
archive_entry_dev
()
and
archive_entry_ino64
()
are used by
archive_entry_linkify(3) to find hardlinks. The pair of
device and inode is supposed to identify hardlinked files.
The device major and minor number can
be obtained independently using
archive_entry_devmajor
()
and
archive_entry_devminor
().
The device can be set either via
archive_entry_set_dev
()
or by the combination of major and minor number using
archive_entry_set_devmajor
()
and
archive_entry_set_devminor
().
The inode number can be obtained using
archive_entry_ino
().
This is a legacy interface that uses the platform
ino_t, which may be very small. To set the inode
number,
archive_entry_set_ino64
()
is the preferred interface.
Accessor functions for block and character devices
Block and character devices are characterised either using a
device number or a pair of major and minor number. The combined device
number can be obtained with
archive_device_rdev
()
and set with
archive_device_set_rdev
().
The major and minor numbers are accessed by
archive_device_rdevmajor
(),
archive_device_rdevminor
()
archive_device_set_rdevmajor
()
and
archive_device_set_rdevminor
().
The process of splitting the combined device number into major and minor number and the reverse process of combing them differs between platforms. Some archive formats use the combined form, while other formats use the split form.
SEE ALSO
archive_entry_acl(3), archive_entry_perms(3), archive_entry_time(3), libarchive(3), stat(2)