Re: [PATCH 06/19] Add ioctl() argument and attribute handling utils
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: 2010-08-20 12:59:26
Also in:
lkml
Miloslav Trmač wrote:
quoted hunk ↗ jump to hunk
--- /dev/null +++ b/crypto/userspace/utils.c
[...]
+#ifdef CONFIG_COMPAT +/* max() is too clever for compile-time constants */ +#define CONST_MAX(A, B) ((A) > (B) ? (A) : (B)) + +#define MAX_SESSION_INPUT_DATA_SIZE \ + (CONST_MAX(sizeof(struct ncr_session_input_data), \ + sizeof(struct compat_ncr_session_input_data))) +#define MAX_SESSION_OUTPUT_BUFFER_SIZE \ + (CONST_MAX(sizeof(struct ncr_session_output_buffer), \ + sizeof(struct compat_ncr_session_output_buffer))) + +#else /* !CONFIG_COMPAT */ + +#define MAX_SESSION_INPUT_DATA_SIZE (sizeof(struct ncr_session_input_data)) +#define MAX_SESSION_OUTPUT_BUFFER_SIZE \ + (sizeof(struct ncr_session_output_buffer)) + +#endif /* !CONFIG_COMPAT */
struct compat_xyz cannot be bigger than struct xyz, can it? -- Stefan Richter -=====-==-=- =--- =-=-- http://arcgraph.de/sr/