vfs_chattr.c 文件参考

浏览源代码.

函数
int	chattr (const char *pathname, struct IATTR *attr)

函数说明

chattr()

int chattr	(	const char *	pathname,
		struct IATTR *	attr
	)

在文件 vfs_chattr.c 第 58 行定义.

{
    struct Vnode *vnode = NULL;
    int ret;
 
    if (pathname == NULL || attr == NULL) {
        set_errno(EINVAL);
        return VFS_ERROR;
    }
 
    VnodeHold();
    ret = VnodeLookup(pathname, &vnode, 0);
    if (ret != LOS_OK) {
        goto errout_with_lock;
    }
 
    if ((vnode->originMount) && (vnode->originMount->mountFlags & MS_RDONLY)) {
        ret = -EROFS;
        goto errout_with_lock;
    }
 
    /* The way we handle the stat depends on the type of vnode that we
     * are dealing with.
     */
 
    if (vnode->vop != NULL && vnode->vop->Chattr != NULL) {
        ret = vnode->vop->Chattr(vnode, attr);
    } else {
        ret = -ENOSYS;
    }
    VnodeDrop();
 
    if (ret < 0) {
        goto errout;
    }
 
    return OK;
 
    /* Failure conditions always set the errno appropriately */
 
errout_with_lock:
    VnodeDrop();
errout:
    set_errno(-ret);
    return VFS_ERROR;
}

函数调用图:

这是这个函数的调用关系图: