zip_file_set_external_attributes.c File Reference

#include "zipint.h"

Go to the source code of this file.

Functions
ZIP_EXTERN int	zip_file_set_external_attributes (zip_t *za, zip_uint64_t idx, zip_flags_t flags, zip_uint8_t opsys, zip_uint32_t attributes)

Function Documentation

zip_file_set_external_attributes()

ZIP_EXTERN int zip_file_set_external_attributes	(	zip_t *	za,
		zip_uint64_t	idx,
		zip_flags_t	flags,
		zip_uint8_t	opsys,
		zip_uint32_t	attributes
	)

Definition at line 37 of file zip_file_set_external_attributes.c.

                                                                                                                             {
    zip_entry_t *e;
    int changed;
    zip_uint8_t unchanged_opsys;
    zip_uint32_t unchanged_attributes;
 
    if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
        return -1;
 
    if (ZIP_IS_RDONLY(za)) {
        zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
        return -1;
    }
 
    e = za->entry + idx;
 
    unchanged_opsys = (e->orig ? (zip_uint8_t)(e->orig->version_madeby >> 8) : (zip_uint8_t)ZIP_OPSYS_DEFAULT);
    unchanged_attributes = e->orig ? e->orig->ext_attrib : ZIP_EXT_ATTRIB_DEFAULT;
 
    changed = (opsys != unchanged_opsys || attributes != unchanged_attributes);
 
    if (changed) {
        if (e->changes == NULL) {
            if ((e->changes = _zip_dirent_clone(e->orig)) == NULL) {
                zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
                return -1;
            }
        }
        e->changes->version_madeby = (zip_uint16_t)((opsys << 8) | (e->changes->version_madeby & 0xff));
        e->changes->ext_attrib = attributes;
        e->changes->changed |= ZIP_DIRENT_ATTRIBUTES;
    }
    else if (e->changes) {
        e->changes->changed &= ~ZIP_DIRENT_ATTRIBUTES;
        if (e->changes->changed == 0) {
            _zip_dirent_free(e->changes);
            e->changes = NULL;
        }
        else {
            e->changes->version_madeby = (zip_uint16_t)((unchanged_opsys << 8) | (e->changes->version_madeby & 0xff));
            e->changes->ext_attrib = unchanged_attributes;
        }
    }
 
    return 0;
}

References _zip_dirent_clone(), _zip_dirent_free(), _zip_get_dirent(), e, zip::entry, zip::error, setup::idx, NULL, za, ZIP_DIRENT_ATTRIBUTES, ZIP_ER_MEMORY, ZIP_ER_RDONLY, zip_error_set(), ZIP_EXT_ATTRIB_DEFAULT, ZIP_IS_RDONLY, and ZIP_OPSYS_DEFAULT.

Referenced by zip_dir_add().