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| author | Christian Göttsche <cgzones@googlemail.com> | 2023-07-19 16:00:07 +0200 |
|---|---|---|
| committer | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2023-07-23 21:25:28 +0900 |
| commit | a959dbd98d1aeb51dec1cc7e5ada5d84ce16cbbc (patch) | |
| tree | f769f44a01a57dfed28fae5dd873bebce097a60c | |
| parent | c2782531397f5cb19ca3f8f9c17727f1cdf5bee8 (diff) | |
| download | lwn-a959dbd98d1aeb51dec1cc7e5ada5d84ce16cbbc.tar.gz lwn-a959dbd98d1aeb51dec1cc7e5ada5d84ce16cbbc.zip | |
tomoyo: add format attributes to functions
Format attributes on functions taking format string can help compilers
detect argument type or count mismatches.
Please the compiler when building with W=1:
security/tomoyo/audit.c: In function ‘tomoyo_init_log’:
security/tomoyo/audit.c:290:9: error: function ‘tomoyo_init_log’ might be a candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format]
290 | vsnprintf(buf + pos, len - pos, fmt, args);
| ^~~~~~~~~
security/tomoyo/audit.c: In function ‘tomoyo_write_log2’:
security/tomoyo/audit.c:376:9: error: function ‘tomoyo_write_log2’ might be a candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format]
376 | buf = tomoyo_init_log(r, len, fmt, args);
| ^~~
security/tomoyo/common.c: In function ‘tomoyo_addprintf’:
security/tomoyo/common.c:193:9: error: function ‘tomoyo_addprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format]
193 | vsnprintf(buffer + pos, len - pos - 1, fmt, args);
| ^~~~~~~~~
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
| -rw-r--r-- | security/tomoyo/common.c | 1 | ||||
| -rw-r--r-- | security/tomoyo/common.h | 4 |
2 files changed, 3 insertions, 2 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 969d4aa6fd55..57ee70ae50f2 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -184,6 +184,7 @@ static bool tomoyo_manage_by_non_root; * * Returns nothing. */ +__printf(3, 4) static void tomoyo_addprintf(char *buffer, int len, const char *fmt, ...) { va_list args; diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index a539b2cbb5c4..e669837ed0e3 100644 --- a/security/tomoyo/common.h +++ b/security/tomoyo/common.h @@ -954,7 +954,7 @@ bool tomoyo_str_starts(char **src, const char *find); char *tomoyo_encode(const char *str); char *tomoyo_encode2(const char *str, int str_len); char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt, - va_list args); + va_list args) __printf(3, 0); char *tomoyo_read_token(struct tomoyo_acl_param *param); char *tomoyo_realpath_from_path(const struct path *path); char *tomoyo_realpath_nofollow(const char *pathname); @@ -1067,7 +1067,7 @@ void tomoyo_warn_oom(const char *function); void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...) __printf(2, 3); void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt, - va_list args); + va_list args) __printf(3, 0); /********** External variable definitions. **********/ |