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[PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants

Started byYury Norov <ynorov@caviumnetworks.com>
First post2015-12-26 17:10 +0100
Last post2015-12-28 19:00 +0100
Articles 3 — 3 participants

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  [PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants Yury Norov <ynorov@caviumnetworks.com> - 2015-12-26 17:10 +0100
    Re: [PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants Arnd Bergmann <arnd@arndb.de> - 2015-12-28 12:20 +0100
      Re: [PATCH 1/2] compat ABI: use non-compat openat and  open_by_handle_at variants Chris Metcalf <cmetcalf@ezchip.com> - 2015-12-28 19:00 +0100

#1298230 — [PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants

FromYury Norov <ynorov@caviumnetworks.com>
Date2015-12-26 17:10 +0100
Subject[PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants
Message-ID<qJZzP-35I-3@gated-at.bofh.it>
The only difference is that non-compat version forces O_LARGEFILE,
and it should be the default behaviour for all architectures, as
we don't support 32-bit off_t. The only exception is tile32, that
continues with compat version of syscalls.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
---
 arch/tile/kernel/compat.c         | 3 +++
 include/uapi/asm-generic/unistd.h | 5 ++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c
index 4912084..489ae19 100644
--- a/arch/tile/kernel/compat.c
+++ b/arch/tile/kernel/compat.c
@@ -94,6 +94,9 @@ COMPAT_SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned int, offset_high,
 #define compat_sys_readahead sys32_readahead
 #define sys_llseek compat_sys_llseek
 
+#define sys_openat		compat_sys_openat
+#define sys_open_by_handle_at	compat_sys_open_by_handle_at
+
 /* Call the assembly trampolines where necessary. */
 #define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn
 #define sys_clone _sys_clone
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 1324b02..07761e5 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -175,7 +175,7 @@ __SYSCALL(__NR_fchownat, sys_fchownat)
 #define __NR_fchown 55
 __SYSCALL(__NR_fchown, sys_fchown)
 #define __NR_openat 56
-__SC_COMP(__NR_openat, sys_openat, compat_sys_openat)
+__SYSCALL(__NR_openat, sys_openat)
 #define __NR_close 57
 __SYSCALL(__NR_close, sys_close)
 #define __NR_vhangup 58
@@ -673,8 +673,7 @@ __SYSCALL(__NR_fanotify_mark, sys_fanotify_mark)
 #define __NR_name_to_handle_at         264
 __SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
 #define __NR_open_by_handle_at         265
-__SC_COMP(__NR_open_by_handle_at, sys_open_by_handle_at, \
-	  compat_sys_open_by_handle_at)
+__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
 #define __NR_clock_adjtime 266
 __SC_COMP(__NR_clock_adjtime, sys_clock_adjtime, compat_sys_clock_adjtime)
 #define __NR_syncfs 267
-- 
2.5.0

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#1298608

FromArnd Bergmann <arnd@arndb.de>
Date2015-12-28 12:20 +0100
Message-ID<qKE0i-17I-7@gated-at.bofh.it>
In reply to#1298230
On Saturday 26 December 2015 19:06:39 Yury Norov wrote:
> The only difference is that non-compat version forces O_LARGEFILE,
> and it should be the default behaviour for all architectures, as
> we don't support 32-bit off_t. The only exception is tile32, that
> continues with compat version of syscalls.
> 
> Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>

Looks good,

Acked-by: Arnd Bergmann <arnd@arndb.de>

(adding Chris to Cc a well, in case he has further comments)

>  arch/tile/kernel/compat.c         | 3 +++
>  include/uapi/asm-generic/unistd.h | 5 ++---
>  2 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c
> index 4912084..489ae19 100644
> --- a/arch/tile/kernel/compat.c
> +++ b/arch/tile/kernel/compat.c
> @@ -94,6 +94,9 @@ COMPAT_SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned int, offset_high,
>  #define compat_sys_readahead sys32_readahead
>  #define sys_llseek compat_sys_llseek
>  
> +#define sys_openat		compat_sys_openat
> +#define sys_open_by_handle_at	compat_sys_open_by_handle_at
> +
>  /* Call the assembly trampolines where necessary. */
>  #define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn
>  #define sys_clone _sys_clone
> diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
> index 1324b02..07761e5 100644
> --- a/include/uapi/asm-generic/unistd.h
> +++ b/include/uapi/asm-generic/unistd.h
> @@ -175,7 +175,7 @@ __SYSCALL(__NR_fchownat, sys_fchownat)
>  #define __NR_fchown 55
>  __SYSCALL(__NR_fchown, sys_fchown)
>  #define __NR_openat 56
> -__SC_COMP(__NR_openat, sys_openat, compat_sys_openat)
> +__SYSCALL(__NR_openat, sys_openat)
>  #define __NR_close 57
>  __SYSCALL(__NR_close, sys_close)
>  #define __NR_vhangup 58
> @@ -673,8 +673,7 @@ __SYSCALL(__NR_fanotify_mark, sys_fanotify_mark)
>  #define __NR_name_to_handle_at         264
>  __SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
>  #define __NR_open_by_handle_at         265
> -__SC_COMP(__NR_open_by_handle_at, sys_open_by_handle_at, \
> -	  compat_sys_open_by_handle_at)
> +__SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
>  #define __NR_clock_adjtime 266
>  __SC_COMP(__NR_clock_adjtime, sys_clock_adjtime, compat_sys_clock_adjtime)
>  #define __NR_syncfs 267
> 

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#1298719 — Re: [PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants

FromChris Metcalf <cmetcalf@ezchip.com>
Date2015-12-28 19:00 +0100
SubjectRe: [PATCH 1/2] compat ABI: use non-compat openat and open_by_handle_at variants
Message-ID<qKKfp-5mY-21@gated-at.bofh.it>
In reply to#1298608
On 12/28/2015 06:18 AM, Arnd Bergmann wrote:
> On Saturday 26 December 2015 19:06:39 Yury Norov wrote:
>> >The only difference is that non-compat version forces O_LARGEFILE,
>> >and it should be the default behaviour for all architectures, as
>> >we don't support 32-bit off_t. The only exception is tile32, that
>> >continues with compat version of syscalls.
>> >
>> >Signed-off-by: Yury Norov<ynorov@caviumnetworks.com>
> Looks good,
>
> Acked-by: Arnd Bergmann<arnd@arndb.de>
>
> (adding Chris to Cc a well, in case he has further comments)

Seems plausible.

Acked-by: Chris Metcalf <cmetcalf@ezchip.com> [for tile]

-- 
Chris Metcalf, EZChip Semiconductor
http://www.ezchip.com

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