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Re: [RFC][PATCH 1/2] sparc32: Mark sendmsg and recvmsg system calls as unsupported

On 2016-11-01 18:28, Adhemerval Zanella wrote:

On 01/11/2016 13:07, Andreas Larsson wrote:
This fixes a bug introduced by abf29edd4a3918 that missed fixing up
sparc32 in the change.

	* sysdeps/unix/sysv/linux/sparc/kernel-features.h: Undefine
  sysdeps/unix/sysv/linux/sparc/kernel-features.h |    4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 69c9c7c..db3f5cd 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -32,8 +32,10 @@
  #include_next <kernel-features.h>

  /* 32-bit SPARC kernels do not support
-   futex_atomic_cmpxchg_inatomic.  */
+   futex_atomic_cmpxchg_inatomic or sendmsg/recvmsg.  */
  #if !defined __arch64__ && !defined __sparc_v9__

At least the kernel headers for Linux 3.2 on sparc defined both __NR_recvmsg
and __NR_sendmsg.  Also, checking 'arch/sparc/kernel/sys32.S' on 3.2 does
seems that sparc32 have both recvmsg and sendmsg wire-up.  Am I missing
something here?

[resent to correct topic - I should apparently stay away from my mail client today]

Linux kernel commit 8b30ca73b7cc7f2177cfc4e8274d2ebdba328cd5 added
sys_sendmsg and sys_recvmsg to the sys_call_table in
arch/sparc/kernel/systbls_32.S. So sparc32 kernels prior to Linux 4.4 do
not support them as straight up system calls.

Best regards,
Andreas Larsson

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