[LTP] [PATCH] pkeys: Fix uclibc build caused by conflicting signature

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> Removing static fixes the problem.

I'd prefer we rename test functions:

#ifndef HAVE_PKEY_MPROTECT
static inline int my_pkey_alloc()
#else
#define my_pkey_alloc pkey_alloc
#endif

my_pkey_alloc()

> 
> uClibc defines pkey_{alloc,free,mprotect} signatures in
> <bits/mman-shared.h>, which is included by <bits/mman-linux.h>.  Because
> it does not implement them, our implementation signature conflicts, as
> it uses static.
> 
> Fixed build error:
> In file included from pkey01.c:32:0:
> pkey.h:18:19: error: static declaration of ?pkey_mprotect? follows non-static
> declaration
>  static inline int pkey_mprotect(void *addr, size_t len, int prot, int pkey)
>                    ^
> In file included from
> /opt/br-test-pkg/br-arm-full/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/mman-linux.h:115:0,
>                  from
>                  /opt/br-test-pkg/br-arm-full/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/mman.h:40,
>                  from
>                  /opt/br-test-pkg/br-arm-full/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/sys/mman.h:41,
>                  from pkey01.c:29:
> /opt/br-test-pkg/br-arm-full/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/mman-shared.h:73:5:
> note: previous declaration of ?pkey_mprotect? was here
>  int pkey_mprotect (void *__addr, size_t __len, int __prot, int __pkey)
>  __THROW;
>      ^
> In file included from pkey01.c:32:0:
> 
> Found with test-pkg tool from Buildroot distribution.
> 
> Fixes: 90c2dc89f ("pkey: add test for memory protection keys")
> 
> Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
> ---
>  testcases/kernel/syscalls/pkeys/pkey.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/testcases/kernel/syscalls/pkeys/pkey.h
> b/testcases/kernel/syscalls/pkeys/pkey.h
> index d623244eb..19c8447eb 100644
> --- a/testcases/kernel/syscalls/pkeys/pkey.h
> +++ b/testcases/kernel/syscalls/pkeys/pkey.h
> @@ -15,17 +15,17 @@
>  #endif
>  
>  #ifndef HAVE_PKEY_MPROTECT
> -static inline int pkey_mprotect(void *addr, size_t len, int prot, int pkey)
> +inline int pkey_mprotect(void *addr, size_t len, int prot, int pkey)
>  {
>  	return tst_syscall(__NR_pkey_mprotect, addr, len, prot, pkey);
>  }
>  
> -static inline int pkey_alloc(unsigned int flags, unsigned int access_rights)
> +inline int pkey_alloc(unsigned int flags, unsigned int access_rights)
>  {
>  	return tst_syscall(__NR_pkey_alloc, flags, access_rights);
>  }
>  
> -static inline int pkey_free(int pkey)
> +inline int pkey_free(int pkey)
>  {
>  	return tst_syscall(__NR_pkey_free, pkey);
>  }
> --
> 2.23.0
> 
> 
> --
> Mailing list info: https://lists.linux.it/listinfo/ltp
>