[v2] selftests: vDSO: parse_vdso: Make compatible with nolibc

[PATCH v2 05/16] elf, uapi: Add type ElfXX_Versym

Posted by Thomas Weißschuh 9 months, 3 weeks ago

The types are used by tools/testing/selftests/vDSO/parse_vdso.c.
To be able to build the vDSO selftests without a libc dependency,
add the types to the kernels own UAPI headers.

As documented by elf(5).

Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 include/uapi/linux/elf.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index d040f12ff1c0ae3dde5c371c81d6089118fbe8ed..8846fe03ca5b836c96aad1be6d8fb9daf3d4b1d9 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -11,6 +11,7 @@ typedef __u16	Elf32_Half;
 typedef __u32	Elf32_Off;
 typedef __s32	Elf32_Sword;
 typedef __u32	Elf32_Word;
+typedef __u16	Elf32_Versym;
 
 /* 64-bit ELF base types. */
 typedef __u64	Elf64_Addr;
@@ -21,6 +22,7 @@ typedef __s32	Elf64_Sword;
 typedef __u32	Elf64_Word;
 typedef __u64	Elf64_Xword;
 typedef __s64	Elf64_Sxword;
+typedef __u16	Elf64_Versym;
 
 /* These constants are for the segment types stored in the image headers */
 #define PT_NULL    0

-- 
2.48.1

Re: [PATCH v2 05/16] elf, uapi: Add type ElfXX_Versym

Posted by Vincenzo Frascino 9 months, 3 weeks ago


On 26/02/2025 11:44, Thomas Weißschuh wrote:
> The types are used by tools/testing/selftests/vDSO/parse_vdso.c.
> To be able to build the vDSO selftests without a libc dependency,
> add the types to the kernels own UAPI headers.
> 
> As documented by elf(5).
> 
> Reviewed-by: Kees Cook <kees@kernel.org>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
>  include/uapi/linux/elf.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index d040f12ff1c0ae3dde5c371c81d6089118fbe8ed..8846fe03ca5b836c96aad1be6d8fb9daf3d4b1d9 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -11,6 +11,7 @@ typedef __u16	Elf32_Half;
>  typedef __u32	Elf32_Off;
>  typedef __s32	Elf32_Sword;
>  typedef __u32	Elf32_Word;
> +typedef __u16	Elf32_Versym;
>  
>  /* 64-bit ELF base types. */
>  typedef __u64	Elf64_Addr;
> @@ -21,6 +22,7 @@ typedef __s32	Elf64_Sword;
>  typedef __u32	Elf64_Word;
>  typedef __u64	Elf64_Xword;
>  typedef __s64	Elf64_Sxword;
> +typedef __u16	Elf64_Versym;
>  
>  /* These constants are for the segment types stored in the image headers */
>  #define PT_NULL    0
> 

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

-- 
Regards,
Vincenzo

[tip: timers/vdso] elf, uapi: Add type ElfXX_Versym

Posted by tip-bot2 for Thomas Weißschuh 9 months, 2 weeks ago

The following commit has been merged into the timers/vdso branch of tip:

Commit-ID:     2c86f604f85def1be0b7889c18e055ed63591018
Gitweb:        https://git.kernel.org/tip/2c86f604f85def1be0b7889c18e055ed63591018
Author:        Thomas Weißschuh <thomas.weissschuh@linutronix.de>
AuthorDate:    Wed, 26 Feb 2025 12:44:44 +01:00
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Mon, 03 Mar 2025 20:00:11 +01:00

elf, uapi: Add type ElfXX_Versym

The type is used by tools/testing/selftests/vDSO/parse_vdso.c.

To be able to build the vDSO selftests without a libc dependency,
add the type to the kernels own UAPI headers. As documented by elf(5).

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-5-28e14e031ed8@linutronix.de
---
 include/uapi/linux/elf.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index d040f12..8846fe0 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -11,6 +11,7 @@ typedef __u16	Elf32_Half;
 typedef __u32	Elf32_Off;
 typedef __s32	Elf32_Sword;
 typedef __u32	Elf32_Word;
+typedef __u16	Elf32_Versym;
 
 /* 64-bit ELF base types. */
 typedef __u64	Elf64_Addr;
@@ -21,6 +22,7 @@ typedef __s32	Elf64_Sword;
 typedef __u32	Elf64_Word;
 typedef __u64	Elf64_Xword;
 typedef __s64	Elf64_Sxword;
+typedef __u16	Elf64_Versym;
 
 /* These constants are for the segment types stored in the image headers */
 #define PT_NULL    0