[PATCH, RFC 13/22] staging/logger: use kuid_t internally

From: Arnd Bergmann
Date: Thu May 02 2013 - 11:21:58 EST


This is probably wrong but lets us build the driver with
CONFIG_UIDGID_STRICT_TYPE_CHECKS enabled. Without it, we get
these errors:

drivers/staging/android/logger.c: In function 'logger_read':
drivers/staging/android/logger.c:316:4: error: incompatible type for argument 3 of 'get_next_entry_by_uid'
drivers/staging/android/logger.c:244:15: note: expected 'uid_t' but argument is of type 'kuid_t'
drivers/staging/android/logger.c: In function 'logger_aio_write':
drivers/staging/android/logger.c:483:14: error: incompatible types when assigning to type 'uid_t' from type 'kuid_t'

which tells us that the driver is not compatible with user namespaces.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/staging/android/logger.c | 4 ++--
drivers/staging/android/logger.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
index b040200..9bd8747 100644
--- a/drivers/staging/android/logger.c
+++ b/drivers/staging/android/logger.c
@@ -242,7 +242,7 @@ static ssize_t do_read_log_to_user(struct logger_log *log,
* 'log->buffer' which contains the first entry readable by 'euid'
*/
static size_t get_next_entry_by_uid(struct logger_log *log,
- size_t off, uid_t euid)
+ size_t off, kuid_t euid)
{
while (off != log->w_off) {
struct logger_entry *entry;
@@ -251,7 +251,7 @@ static size_t get_next_entry_by_uid(struct logger_log *log,

entry = get_entry_header(log, off, &scratch);

- if (entry->euid == euid)
+ if (uid_eq(entry->euid, euid))
return off;

next_len = sizeof(struct logger_entry) + entry->len;
diff --git a/drivers/staging/android/logger.h b/drivers/staging/android/logger.h
index cc6bbd9..70af7d8 100644
--- a/drivers/staging/android/logger.h
+++ b/drivers/staging/android/logger.h
@@ -66,7 +66,7 @@ struct logger_entry {
__s32 tid;
__s32 sec;
__s32 nsec;
- uid_t euid;
+ kuid_t euid;
char msg[0];
};

--
1.8.1.2

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