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ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3) - man page online | library functions

Get external attributes for file in zip.

Chapter
September 19, 2013
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

zip.h const char * 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, use ZIP_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

libzip(3), zip_file_set_external_attributes(3)

AUTHORS

Dieter Baron <@nih.at> and Thomas Klausner <@giga.or.at>
NiH September 19, 2013 ZIP_FILE_GET_EXTERNAL_ATTRIBUTES(3)
This manual Reference Other manuals
zip_file_get_external_attributes(3) referred by zip_file_set_external_attributes(3)
refer to libzip(3) | zip_file_set_external_attributes(3)