/* 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;
}
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;
}