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udf: fix ioctl errors

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Currently, lsattr for instance in udf directory gives
"udf: Invalid argument While reading flags on ..."

This patch returns -ENOIOCTLCMD
when command is unknown to have more accurate message like this:
"Inappropriate ioctl for device While reading flags on ..."

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Fabian Frederick 2017-01-24 21:48:34 +01:00 committed by Jan Kara
parent 70f16cef06
commit 782deb2eec
1 changed files with 4 additions and 1 deletions
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5
fs/udf/file.c
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@ -184,7 +184,8 @@ long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
goto out;
}
if (!arg) {
if (!arg && ((cmd == UDF_GETVOLIDENT) || (cmd == UDF_GETEASIZE) ||
(cmd == UDF_RELOCATE_BLOCKS) || (cmd == UDF_GETEABLOCK))) {
udf_debug("invalid argument to udf_ioctl\n");
result = -EINVAL;
goto out;
@ -220,6 +221,8 @@ long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
UDF_I(inode)->i_ext.i_data,
UDF_I(inode)->i_lenEAttr) ? -EFAULT : 0;
goto out;
default:
return -ENOIOCTLCMD;
}
out: