table of contents
ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3) | Library Functions Manual | ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3) |
NAME¶
zip_file_get_external_attributes
—
get external attributes for file in zip
LIBRARY¶
libzip (-lzip)
SYNOPSIS¶
#include
<zip.h>
int
zip_file_get_external_attributes
(zip_t
*archive, zip_uint64_t
index, zip_flags_t
flags, zip_uint8_t
*opsys, zip_uint32_t
*attributes);
DESCRIPTION¶
The
zip_file_get_external_attributes
()
function returns the operating system and external attributes for the file
at position index in the zip archive. The external
attributes usually contain the operating system-specific file permissions.
If flags is set to
ZIP_FL_UNCHANGED
, the original unchanged values are
returned. If opsys or attributes
are NULL
, they are not filled in.
The following operating systems are defined by the zip specification:
ZIP_OPSYS_ACORN_RISC
ZIP_OPSYS_ALTERNATE_MVS
ZIP_OPSYS_AMIGA
ZIP_OPSYS_ATARI_ST
ZIP_OPSYS_BEOS
ZIP_OPSYS_CPM
ZIP_OPSYS_DOS
ZIP_OPSYS_MACINTOSH
ZIP_OPSYS_MVS
ZIP_OPSYS_OPENVMS
ZIP_OPSYS_OS_2
ZIP_OPSYS_OS_400
ZIP_OPSYS_OS_X
ZIP_OPSYS_TANDEM
ZIP_OPSYS_UNIX
ZIP_OPSYS_VFAT
ZIP_OPSYS_VM_CMS
ZIP_OPSYS_VSE
ZIP_OPSYS_WINDOWS_NTFS
(uncommon, useZIP_OPSYS_DOS
instead)ZIP_OPSYS_Z_SYSTEM
The defines above follow the PKWARE Inc. Appnote; please note that the InfoZIP Appnote has a slightly different mapping.
RETURN VALUES¶
Upon successful completion, 0 is returned. In case of an error,
-1
is returned and the error code in
archive is set to indicate the error.
EXAMPLES¶
The following code can be used to expand
attributes if the operating system is
ZIP_OPSYS_DOS
.
#include <sys/stat.h> #define FA_RDONLY 0x01 // FILE_ATTRIBUTE_READONLY #define FA_DIREC 0x10 // FILE_ATTRIBUTE_DIRECTORY static mode_t _zip_dos_attr2mode(zip_uint32_t attr) { mode_t m = S_IRUSR | S_IRGRP | S_IROTH; if (0 == (attr & FA_RDONLY)) m |= S_IWUSR | S_IWGRP | S_IWOTH; if (attr & FA_DIREC) m = (S_IFDIR | (m & ~S_IFMT)) | S_IXUSR | S_IXGRP | S_IXOTH; return m; }
ERRORS¶
zip_file_get_external_attributes
() fails
if:
- [
ZIP_ER_INVAL
] - index is not a valid file index in archive.
SEE ALSO¶
HISTORY¶
zip_file_get_external_attributes
() was
added in libzip 0.11.2.
AUTHORS¶
Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
December 18, 2017 | Linux 5.14.0-427.18.1.el9_4.x86_64 |