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[v2,06/16] elf, uapi: Add types ElfXX_Verdef and ElfXX_Veraux

Message ID 20250226-parse_vdso-nolibc-v2-6-28e14e031ed8@linutronix.de
State New
Headers show
Series None | expand

Commit Message

Thomas Weißschuh Feb. 26, 2025, 11:44 a.m. UTC 
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.

Link: https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/symversion.html#VERDEFEXTS
Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 include/uapi/linux/elf.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

Comments

Vincenzo Frascino Feb. 28, 2025, 12:25 p.m. UTC | #1 
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.
> 
> Link: https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/symversion.html#VERDEFEXTS
> Reviewed-by: Kees Cook <kees@kernel.org>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
>  include/uapi/linux/elf.h | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index 8846fe03ca5b836c96aad1be6d8fb9daf3d4b1d9..49f9f90458d8ca8e7b8f823d32be0a719ff827b3 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -491,4 +491,34 @@ typedef struct elf64_note {
>  /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
>  #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
>  
> +typedef struct {
> +  Elf32_Half	vd_version;
> +  Elf32_Half	vd_flags;
> +  Elf32_Half	vd_ndx;
> +  Elf32_Half	vd_cnt;
> +  Elf32_Word	vd_hash;
> +  Elf32_Word	vd_aux;
> +  Elf32_Word	vd_next;
> +} Elf32_Verdef;
> +
> +typedef struct {
> +  Elf64_Half	vd_version;
> +  Elf64_Half	vd_flags;
> +  Elf64_Half	vd_ndx;
> +  Elf64_Half	vd_cnt;
> +  Elf64_Word	vd_hash;
> +  Elf64_Word	vd_aux;
> +  Elf64_Word	vd_next;
> +} Elf64_Verdef;
> +
> +typedef struct {
> +  Elf32_Word    vda_name;
> +  Elf32_Word    vda_next;
> +} Elf32_Verdaux;
> +
> +typedef struct {
> +  Elf64_Word    vda_name;
> +  Elf64_Word    vda_next;
> +} Elf64_Verdaux;
> +
>  #endif /* _UAPI_LINUX_ELF_H */
> 

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

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 8846fe03ca5b836c96aad1be6d8fb9daf3d4b1d9..49f9f90458d8ca8e7b8f823d32be0a719ff827b3 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -491,4 +491,34 @@  typedef struct elf64_note {
 /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
 #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
 
+typedef struct {
+  Elf32_Half	vd_version;
+  Elf32_Half	vd_flags;
+  Elf32_Half	vd_ndx;
+  Elf32_Half	vd_cnt;
+  Elf32_Word	vd_hash;
+  Elf32_Word	vd_aux;
+  Elf32_Word	vd_next;
+} Elf32_Verdef;
+
+typedef struct {
+  Elf64_Half	vd_version;
+  Elf64_Half	vd_flags;
+  Elf64_Half	vd_ndx;
+  Elf64_Half	vd_cnt;
+  Elf64_Word	vd_hash;
+  Elf64_Word	vd_aux;
+  Elf64_Word	vd_next;
+} Elf64_Verdef;
+
+typedef struct {
+  Elf32_Word    vda_name;
+  Elf32_Word    vda_next;
+} Elf32_Verdaux;
+
+typedef struct {
+  Elf64_Word    vda_name;
+  Elf64_Word    vda_next;
+} Elf64_Verdaux;
+
 #endif /* _UAPI_LINUX_ELF_H */