Messages in this thread Patch in this message | | | From | Paul Durrant <> | Subject | [PATCH v3 1/3] xen/privcmd: return -ENOTTY for unimplemented IOCTLs | Date | Mon, 13 Feb 2017 17:03:22 +0000 |
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The code sets the default return code to -ENOSYS but then overrides this to -EINVAL in the switch() statement's default case, which is clearly silly.
This patch removes the override and sets the default return code to -ENOTTY, which is the conventional return for an unimplemented ioctl.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com> --- Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com>
v2: - Use -ENOTTY rather than -ENOSYS --- drivers/xen/privcmd.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 6e3306f..5e5c7ae 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -551,7 +551,7 @@ static long privcmd_ioctl_mmap_batch(void __user *udata, int version) static long privcmd_ioctl(struct file *file, unsigned int cmd, unsigned long data) { - int ret = -ENOSYS; + int ret = -ENOTTY; void __user *udata = (void __user *) data; switch (cmd) { @@ -572,7 +572,6 @@ static long privcmd_ioctl(struct file *file, break; default: - ret = -EINVAL; break; } -- 2.1.4
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