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debug: Improve mqueue.h fortify warnings with clang

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It improve mq_open.  The compile and runtime checks have similar
coverage as with GCC.

Checked on aarch64, armhf, x86_64, and i686.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella 2024-02-08 15:46:22 -03:00
parent 86889e22db
commit c23107effb
2 changed files with 30 additions and 2 deletions
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29
rt/bits/mqueue2.h
View File

@ -29,6 +29,8 @@ extern mqd_t __mq_open_2 (const char *__name, int __oflag)
extern mqd_t __REDIRECT_NTH (__mq_open_alias, (const char *__name,
int __oflag, ...), mq_open)
__nonnull ((1));
#ifdef __va_arg_pack_len
__errordecl (__mq_open_wrong_number_of_args,
"mq_open can be called either with 2 or 4 arguments");
__errordecl (__mq_open_missing_mode_and_attr,
@ -55,3 +57,30 @@ __NTH (mq_open (const char *__name, int __oflag, ...))
return __mq_open_alias (__name, __oflag, __va_arg_pack ());
}
#elif __fortify_use_clang
__fortify_function_error_function __attribute_overloadable__ mqd_t
__NTH (mq_open (const char *__name, int __oflag, mode_t mode))
__fortify_clang_unavailable ("mq_open can be called either with 2 or 4 arguments");
__fortify_function_error_function __attribute_overloadable__ mqd_t
__NTH (mq_open (const char *__name, int __oflag, mode_t mode,
struct mq_attr *attr, ...))
__fortify_clang_unavailable ("mq_open can be called either with 2 or 4 arguments");
__fortify_function __attribute_overloadable__ mqd_t
__NTH (mq_open (__fortify_clang_overload_arg (const char *, ,__name),
int __oflag))
__fortify_clang_prefer_this_overload
__fortify_clang_error ((__oflag & O_CREAT),
"mq_open with O_CREAT in second argument needs 4 arguments")
{
return __mq_open_alias (__name, __oflag);
}
__fortify_function __attribute_overloadable__ mqd_t
__NTH (mq_open (__fortify_clang_overload_arg (const char *, ,__name),
int __oflag, int __mode, struct mq_attr *__attr))
{
return __mq_open_alias (__name, __oflag, __mode, __attr);
}
#endif

3
rt/mqueue.h
View File

@ -110,8 +110,7 @@ extern int __REDIRECT (mq_timedsend, (mqd_t __mqdes,
#endif
/* Define some inlines helping to catch common problems. */
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function \
&& defined __va_arg_pack_len
#if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
# include <bits/mqueue2.h>
#endif