コード例 #1
0
ファイル: au_rt.c プロジェクト: beoran/eruta
/* Allocates and initializes an ivector. Returns the initialized ivector, 
 * or NULL on failiure.  
 */
au_iarray * au_iarray_new() {
    au_iarray * result = NULL;
    au_iarray * aid = au_iarray_alloc(); 
    if(!aid) { return NULL; }
    result = au_iarray_initialize(result);
    /* If initialization fails, free the vector and return NULL indicating error. */
    if(!result) {  return au_iarray_free(result); }
    return result;    
}
コード例 #2
0
static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex,
			   unsigned int sigen, const unsigned int verbose)
{
	int err;
	unsigned long long max, ull;
	struct inode *i, **array;
	aufs_bindex_t bstart, bend;

	array = au_iarray_alloc(sb, &max);
	err = PTR_ERR(array);
	if (IS_ERR(array))
		goto out;

	err = 0;
	AuDbg("b%d\n", bindex);
	for (ull = 0; !err && ull < max; ull++) {
		i = array[ull];
		if (i->i_ino == AUFS_ROOT_INO)
			continue;

		/* AuDbgInode(i); */
		if (au_iigen(i) == sigen)
			ii_read_lock_child(i);
		else {
			ii_write_lock_child(i);
			err = au_refresh_hinode_self(i);
			au_iigen_dec(i);
			if (!err)
				ii_downgrade_lock(i);
			else {
				ii_write_unlock(i);
				break;
			}
		}

		bstart = au_ibstart(i);
		bend = au_ibend(i);
		if (bstart <= bindex
		    && bindex <= bend
		    && au_h_iptr(i, bindex)
		    && au_test_ibusy(i, bstart, bend)) {
			err = -EBUSY;
			AuVerbose(verbose, "busy i%lu\n", i->i_ino);
			AuDbgInode(i);
		}
		ii_read_unlock(i);
	}
	au_iarray_free(array, max);

out:
	return err;
}