linux-kernel - [2.6.18-rc* PATCH RFC]: Correct ambiguous errno of aio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <44F2EF90.9050603@gmail.com>
Date:	Mon, 28 Aug 2006 21:28:48 +0800
From:	Yi Yang <yang.y.yi@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [2.6.18-rc* PATCH RFC]: Correct ambiguous errno of aio

In the current implementation of AIO, for the operation IOCB_CMD_FDSYNC
and IOCB_CMD_FSYNC, the returned errno is -EINVAL although the kernel
does know them, I think the correct errno should be -EOPNOTSUPP which
means they aren't be implemented or supported.

>From the kernel source code, we can see they can be supported without
any code modification if a specific filesystem implements aio_fsync.

Another obvious problem is the function aio_fsync is as same as the
function aio_fdsync, so they are duplicate, only one is enough.

Here this patch is.



--- a/fs/aio.c.orig 2006-08-28 15:15:18.000000000 +0800
+++ b/fs/aio.c 2006-08-28 15:33:59.000000000 +0800
@@ -1363,20 +1363,10 @@ static ssize_t aio_pwrite(struct kiocb *
return ret;
}

-static ssize_t aio_fdsync(struct kiocb *iocb)
-{
- struct file *file = iocb->ki_filp;
- ssize_t ret = -EINVAL;
-
- if (file->f_op->aio_fsync)
- ret = file->f_op->aio_fsync(iocb, 1);
- return ret;
-}
-
static ssize_t aio_fsync(struct kiocb *iocb)
{
struct file *file = iocb->ki_filp;
- ssize_t ret = -EINVAL;
+ ssize_t ret = -EOPNOTSUPP;

if (file->f_op->aio_fsync)
ret = file->f_op->aio_fsync(iocb, 0);
@@ -1425,12 +1415,12 @@ static ssize_t aio_setup_iocb(struct kio
kiocb->ki_retry = aio_pwrite;
break;
case IOCB_CMD_FDSYNC:
- ret = -EINVAL;
+ ret = -EOPNOTSUPP;
if (file->f_op->aio_fsync)
- kiocb->ki_retry = aio_fdsync;
+ kiocb->ki_retry = aio_fsync;
break;
case IOCB_CMD_FSYNC:
- ret = -EINVAL;
+ ret = -EOPNOTSUPP;
if (file->f_op->aio_fsync)
kiocb->ki_retry = aio_fsync;
break;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/