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([2401:4900:86f4:d8e0:8d8d:c166:cad9:b4a]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2adfb6c4dd0sm199264225ad.70.2026.03.04.05.52.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2026 05:52:22 -0800 (PST) From: Mathura_Kumar To: brauner@kernel.org Cc: academic1mathura@gmail.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk Subject: [PATCH 3/3] [PATCH]-This patch series completes the implementation of do_mq_timedreceive2 new system calls that provide non-destructive peek functionality on POSIX message queues Date: Wed, 4 Mar 2026 19:21:23 +0530 Message-ID: <20260304135126.77270-3-academic1mathura@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260304135126.77270-1-academic1mathura@gmail.com> References: <20260304135126.77270-1-academic1mathura@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit v1 of this series was incomplete — syscall table entries for several architectures were missing, and false postive warning. This addresses all of that and has been tested on x86-64 with all tests passing. Patch 1/3 — core implementation Patch 2/3 — RFC about false postive build error Patch 3/3 — remaining per-arch syscall table entries All older patch was still seem unseen/unmerged so for convenience i am including all required commit of previous patch with this. Architecture support: ALL Ready Signed-off-by: Mathura_Kumar --- arch/alpha/kernel/syscalls/syscall.tbl | 1 + arch/arm/tools/syscall.tbl | 2 ++ arch/arm64/tools/syscall_32.tbl | 2 ++ arch/m68k/kernel/syscalls/syscall.tbl | 3 +++ arch/microblaze/kernel/syscalls/syscall.tbl | 3 +++ arch/mips/kernel/syscalls/syscall_n32.tbl | 2 ++ arch/mips/kernel/syscalls/syscall_n64.tbl | 1 + arch/mips/kernel/syscalls/syscall_o32.tbl | 2 ++ arch/powerpc/kernel/syscalls/syscall.tbl | 3 +++ arch/s390/kernel/syscalls/syscall.tbl | 1 + arch/sh/kernel/syscalls/syscall.tbl | 2 ++ arch/sparc/kernel/syscalls/syscall.tbl | 3 +++ arch/xtensa/kernel/syscalls/syscall.tbl | 2 ++ include/uapi/asm-generic/unistd.h | 9 +++++---- scripts/checksyscalls.sh | 1 + scripts/syscall.tbl | 3 +++ 16 files changed, 36 insertions(+), 4 deletions(-) diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl index f31b7afffc34..0ff42d241419 100644 --- a/arch/alpha/kernel/syscalls/syscall.tbl +++ b/arch/alpha/kernel/syscalls/syscall.tbl @@ -511,3 +511,4 @@ 579 common file_setattr sys_file_setattr 580 common listns sys_listns 581 common rseq_slice_yield sys_rseq_slice_yield +582 common mq_timedreceive2 sys_mq_timedreceive2 diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index 94351e22bfcf..bcec28be852c 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -486,3 +486,5 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2_time32 +473 common mq_timedreceive2_time64 sys_mq_timedreceive2 diff --git a/arch/arm64/tools/syscall_32.tbl b/arch/arm64/tools/syscall_32.tbl index 62d93d88e0fe..02603704231e 100644 --- a/arch/arm64/tools/syscall_32.tbl +++ b/arch/arm64/tools/syscall_32.tbl @@ -483,3 +483,5 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2_time64 sys_mq_timedreceive2 +473 common mq_timedreceive2 sys_mq_timedreceive2_time32 diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl index 248934257101..b67f23edda11 100644 --- a/arch/m68k/kernel/syscalls/syscall.tbl +++ b/arch/m68k/kernel/syscalls/syscall.tbl @@ -471,3 +471,6 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2_time32 +473 common mq_timedreceive2_time64 sys_mq_timedreceive2 + diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl index 223d26303627..89fb60006a99 100644 --- a/arch/microblaze/kernel/syscalls/syscall.tbl +++ b/arch/microblaze/kernel/syscalls/syscall.tbl @@ -477,3 +477,6 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2_time32 +473 common mq_timedreceive2_time64 sys_mq_timedreceive2 + diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl index 7430714e2b8f..fee830be67a6 100644 --- a/arch/mips/kernel/syscalls/syscall_n32.tbl +++ b/arch/mips/kernel/syscalls/syscall_n32.tbl @@ -410,3 +410,5 @@ 469 n32 file_setattr sys_file_setattr 470 n32 listns sys_listns 471 n32 rseq_slice_yield sys_rseq_slice_yield +472 n32 mq_timedreceive2 sys_mq_timedreceive2_time32 +473 n32 mq_timedreceive2_time64 sys_mq_timedreceive2 diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl index 630aab9e5425..75de6ee2df94 100644 --- a/arch/mips/kernel/syscalls/syscall_n64.tbl +++ b/arch/mips/kernel/syscalls/syscall_n64.tbl @@ -386,3 +386,4 @@ 469 n64 file_setattr sys_file_setattr 470 n64 listns sys_listns 471 n64 rseq_slice_yield sys_rseq_slice_yield +472 n64 mq_timedreceive2 sys_mq_timedreceive2 diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl index 128653112284..8694a2d2f084 100644 --- a/arch/mips/kernel/syscalls/syscall_o32.tbl +++ b/arch/mips/kernel/syscalls/syscall_o32.tbl @@ -459,3 +459,5 @@ 469 o32 file_setattr sys_file_setattr 470 o32 listns sys_listns 471 o32 rseq_slice_yield sys_rseq_slice_yield +472 o32 mq_timedreceive2 sys_mq_timedreceive2_time32 +473 o32 mq_timedreceive2_time64 sys_mq_timedreceive2 diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl index 4fcc7c58a105..fd90a2f500b6 100644 --- a/arch/powerpc/kernel/syscalls/syscall.tbl +++ b/arch/powerpc/kernel/syscalls/syscall.tbl @@ -562,3 +562,6 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 nospu rseq_slice_yield sys_rseq_slice_yield +472 32 mq_timedreceive2 sys_mq_timedreceive2_time32 +473 64 mq_timedreceive2 sys_mq_timedreceive2 +474 32 mq_timedreceive2_time64 sys_mq_timedreceive2 sys_mq_timedreceive2 diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl index 09a7ef04d979..34df682061d9 100644 --- a/arch/s390/kernel/syscalls/syscall.tbl +++ b/arch/s390/kernel/syscalls/syscall.tbl @@ -398,3 +398,4 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2 diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl index 70b315cbe710..1796ccd23d10 100644 --- a/arch/sh/kernel/syscalls/syscall.tbl +++ b/arch/sh/kernel/syscalls/syscall.tbl @@ -475,3 +475,5 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2_time32 +473 common mq_timedreceive2_time64 sys_mq_timedreceive2 diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl index 7e71bf7fcd14..5cfde6e0e6ba 100644 --- a/arch/sparc/kernel/syscalls/syscall.tbl +++ b/arch/sparc/kernel/syscalls/syscall.tbl @@ -517,3 +517,6 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 32 mq_timedreceive2 sys_mq_timedreceive2_time32 +473 64 mq_timedreceive2 sys_mq_timedreceive2 +474 32 mq_timedreceive2_time64 sys_mq_timedreceive2 sys_mq_timedreceive2 diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl index a9bca4e484de..9f69ef99e617 100644 --- a/arch/xtensa/kernel/syscalls/syscall.tbl +++ b/arch/xtensa/kernel/syscalls/syscall.tbl @@ -442,3 +442,5 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 common mq_timedreceive2 sys_mq_timedreceive2_time32 +473 common mq_timedreceive2_time64 sys_mq_timedreceive2 diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index 1d27fd3e118e..ecfad24055b3 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -863,12 +863,13 @@ __SYSCALL(__NR_listns, sys_listns) #define __NR_rseq_slice_yield 471 __SYSCALL(__NR_rseq_slice_yield, sys_rseq_slice_yield) -#undef __NR_syscalls -#define __NR_syscalls 472 -#define __NR_mq_timedreceive2 473 + +#define __NR_mq_timedreceive2 472 __SC_3264(__NR_mq_timedreceive2, sys_mq_timedreceive2_time32, sys_mq_timedreceive2) -#define __NR_mq_timedreceive2_time64 474 +#define __NR_mq_timedreceive2_time64 473 __SYSCALL(__NR_mq_timedreceive2_time64, sys_mq_timedreceive2) +#undef __NR_syscalls +#define __NR_syscalls 474 /* * 32 bit systems traditionally used different * syscalls for off_t and loff_t arguments, while diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh index 1e5d2eeb726d..605a65cfa144 100755 --- a/scripts/checksyscalls.sh +++ b/scripts/checksyscalls.sh @@ -104,6 +104,7 @@ cat << EOF #define __IGNORE_recvmmsg_time64 #define __IGNORE_mq_timedsend_time64 #define __IGNORE_mq_timedreceive_time64 +#define __IGNORE_mq_timedreceive2_time64 #define __IGNORE_semtimedop_time64 #define __IGNORE_rt_sigtimedwait_time64 #define __IGNORE_futex_time64 diff --git a/scripts/syscall.tbl b/scripts/syscall.tbl index 7a42b32b6577..7a09cd65cd8d 100644 --- a/scripts/syscall.tbl +++ b/scripts/syscall.tbl @@ -412,3 +412,6 @@ 469 common file_setattr sys_file_setattr 470 common listns sys_listns 471 common rseq_slice_yield sys_rseq_slice_yield +472 time32 mq_timedreceive2 sys_mq_timedreceive2_time32 +473 64 mq_timedreceive2 sys_mq_timedreceive2 +474 32 mq_timedreceive_time64 sys_mq_timedreceive2 -- 2.43.0