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

[PATCH v2 03/16] elf, uapi: Add definition for DT_GNU_HASH

Posted by Thomas Weißschuh 9 months, 3 weeks ago

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

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

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 448695c7364042b10682acc8223eb6053ad039dd..c5383cc7bb13c931fea083de5243c4006f795006 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -107,6 +107,7 @@ typedef __s64	Elf64_Sxword;
 #define DT_VALRNGLO	0x6ffffd00
 #define DT_VALRNGHI	0x6ffffdff
 #define DT_ADDRRNGLO	0x6ffffe00
+#define DT_GNU_HASH	0x6ffffef5
 #define DT_ADDRRNGHI	0x6ffffeff
 #define DT_VERSYM	0x6ffffff0
 #define DT_RELACOUNT	0x6ffffff9

-- 
2.48.1

Re: [PATCH v2 03/16] elf, uapi: Add definition for DT_GNU_HASH

Posted by Vincenzo Frascino 9 months, 3 weeks ago


On 26/02/2025 11:44, Thomas Weißschuh wrote:
> The definition is used by tools/testing/selftests/vDSO/parse_vdso.c.
> To be able to build the vDSO selftests without a libc dependency,
> add the define to the kernels own UAPI headers.
> 
> Link: https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/libc-ddefs.html
> Reviewed-by: Kees Cook <kees@kernel.org>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
>  include/uapi/linux/elf.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index 448695c7364042b10682acc8223eb6053ad039dd..c5383cc7bb13c931fea083de5243c4006f795006 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -107,6 +107,7 @@ typedef __s64	Elf64_Sxword;
>  #define DT_VALRNGLO	0x6ffffd00
>  #define DT_VALRNGHI	0x6ffffdff
>  #define DT_ADDRRNGLO	0x6ffffe00
> +#define DT_GNU_HASH	0x6ffffef5
>  #define DT_ADDRRNGHI	0x6ffffeff
>  #define DT_VERSYM	0x6ffffff0
>  #define DT_RELACOUNT	0x6ffffff9
> 

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

-- 
Regards,
Vincenzo

[tip: timers/vdso] elf, uapi: Add definition for DT_GNU_HASH

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:     50881d1469cf35eec690d863276cf257c391eec5
Gitweb:        https://git.kernel.org/tip/50881d1469cf35eec690d863276cf257c391eec5
Author:        Thomas Weißschuh <thomas.weissschuh@linutronix.de>
AuthorDate:    Wed, 26 Feb 2025 12:44:42 +01:00
Committer:     Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Mon, 03 Mar 2025 20:00:11 +01:00

elf, uapi: Add definition for DT_GNU_HASH

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

To be able to build the vDSO selftests without a libc dependency,
add the define to the kernels own UAPI headers.

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://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/libc-ddefs.html
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-3-28e14e031ed8@linutronix.de
---
 include/uapi/linux/elf.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 448695c..c5383cc 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -107,6 +107,7 @@ typedef __s64	Elf64_Sxword;
 #define DT_VALRNGLO	0x6ffffd00
 #define DT_VALRNGHI	0x6ffffdff
 #define DT_ADDRRNGLO	0x6ffffe00
+#define DT_GNU_HASH	0x6ffffef5
 #define DT_ADDRRNGHI	0x6ffffeff
 #define DT_VERSYM	0x6ffffff0
 #define DT_RELACOUNT	0x6ffffff9