Re: [PATCH 2/2] fs: Wire up sendfd() syscall (all architectures)

From: Geert Uytterhoeven
Date: Tue Dec 02 2014 - 03:01:10 EST

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In reply to: Alex Dubov: "[PATCH 2/2] fs: Wire up sendfd() syscall (all architectures)"
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This really needs a CC to linux-arch (added).

On Tue, Dec 2, 2014 at 5:35 AM, Alex Dubov <alex.dubov@xxxxxxxxx> wrote:
> Signed-off-by: Alex Dubov <oakad@xxxxxxxxx>
> ---
> arch/arm/include/uapi/asm/unistd.h | 1 +
> arch/arm/kernel/calls.S | 1 +
> arch/arm64/include/asm/unistd32.h | 2 ++
> arch/ia64/include/uapi/asm/unistd.h | 1 +
> arch/ia64/kernel/entry.S | 1 +
> arch/m68k/include/uapi/asm/unistd.h | 1 +
> arch/m68k/kernel/syscalltable.S | 1 +

You forgot to update NR_syscalls in arch/m68k/include/asm/unistd.h.

> arch/microblaze/include/uapi/asm/unistd.h | 1 +
> arch/microblaze/kernel/syscall_table.S | 1 +
> arch/mips/include/uapi/asm/unistd.h | 15 +++++++++------
> arch/mips/kernel/scall32-o32.S | 1 +
> arch/mips/kernel/scall64-64.S | 1 +
> arch/mips/kernel/scall64-n32.S | 1 +
> arch/mips/kernel/scall64-o32.S | 1 +
> arch/parisc/include/uapi/asm/unistd.h | 3 ++-
> arch/powerpc/include/asm/systbl.h | 1 +
> arch/powerpc/include/uapi/asm/unistd.h | 1 +
> arch/s390/include/uapi/asm/unistd.h | 3 ++-
> arch/s390/kernel/compat_wrapper.c | 1 +
> arch/s390/kernel/syscalls.S | 1 +
> arch/sparc/include/uapi/asm/unistd.h | 3 ++-
> arch/sparc/kernel/systbls_32.S | 2 +-
> arch/sparc/kernel/systbls_64.S | 4 ++--
> arch/x86/syscalls/syscall_32.tbl | 1 +
> arch/x86/syscalls/syscall_64.tbl | 1 +
> arch/xtensa/include/uapi/asm/unistd.h | 5 +++--
> include/linux/syscalls.h | 1 +
> include/uapi/asm-generic/unistd.h | 4 +++-
> kernel/sys_ni.c | 3 +++
> 29 files changed, 48 insertions(+), 15 deletions(-)
>
> diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h
> index 705bb76..6428823 100644
> --- a/arch/arm/include/uapi/asm/unistd.h
> +++ b/arch/arm/include/uapi/asm/unistd.h
> @@ -413,6 +413,7 @@
> #define __NR_getrandom (__NR_SYSCALL_BASE+384)
> #define __NR_memfd_create (__NR_SYSCALL_BASE+385)
> #define __NR_bpf (__NR_SYSCALL_BASE+386)
> +#define __NR_sendfd (__NR_SYSCALL_BASE+387)
>
> /*
> * The following SWIs are ARM private.
> diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
> index e51833f..30bdeb5 100644
> --- a/arch/arm/kernel/calls.S
> +++ b/arch/arm/kernel/calls.S
> @@ -396,6 +396,7 @@
> CALL(sys_getrandom)
> /* 385 */ CALL(sys_memfd_create)
> CALL(sys_bpf)
> + CALL(sys_sendfd)
> #ifndef syscalls_counted
> .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
> #define syscalls_counted
> diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
> index 9dfdac4..7f19595 100644
> --- a/arch/arm64/include/asm/unistd32.h
> +++ b/arch/arm64/include/asm/unistd32.h
> @@ -794,3 +794,5 @@ __SYSCALL(__NR_getrandom, sys_getrandom)
> __SYSCALL(__NR_memfd_create, sys_memfd_create)
> #define __NR_bpf 386
> __SYSCALL(__NR_bpf, sys_bpf)
> +#define __NR_sendfd 387
> +__SYSCALL(__NR_sendfd, sys_sendfd)
> diff --git a/arch/ia64/include/uapi/asm/unistd.h b/arch/ia64/include/uapi/asm/unistd.h
> index 4c2240c..55be68c 100644
> --- a/arch/ia64/include/uapi/asm/unistd.h
> +++ b/arch/ia64/include/uapi/asm/unistd.h
> @@ -331,5 +331,6 @@
> #define __NR_getrandom 1339
> #define __NR_memfd_create 1340
> #define __NR_bpf 1341
> +#define __NR_sendfd 1342
>
> #endif /* _UAPI_ASM_IA64_UNISTD_H */
> diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
> index f5e96df..97596a3 100644
> --- a/arch/ia64/kernel/entry.S
> +++ b/arch/ia64/kernel/entry.S
> @@ -1779,6 +1779,7 @@ sys_call_table:
> data8 sys_getrandom
> data8 sys_memfd_create // 1340
> data8 sys_bpf
> + data8 sys_sendfd
>
> .org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls
> #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */
> diff --git a/arch/m68k/include/uapi/asm/unistd.h b/arch/m68k/include/uapi/asm/unistd.h
> index 2c1bec9..77e7098 100644
> --- a/arch/m68k/include/uapi/asm/unistd.h
> +++ b/arch/m68k/include/uapi/asm/unistd.h
> @@ -360,5 +360,6 @@
> #define __NR_getrandom 352
> #define __NR_memfd_create 353
> #define __NR_bpf 354
> +#define __NR_sendfd 355
>
> #endif /* _UAPI_ASM_M68K_UNISTD_H_ */
> diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S
> index 2ca219e..3ea20d4 100644
> --- a/arch/m68k/kernel/syscalltable.S
> +++ b/arch/m68k/kernel/syscalltable.S
> @@ -375,4 +375,5 @@ ENTRY(sys_call_table)
> .long sys_getrandom
> .long sys_memfd_create
> .long sys_bpf
> + .long sys_sendfd
>
> diff --git a/arch/microblaze/include/uapi/asm/unistd.h b/arch/microblaze/include/uapi/asm/unistd.h
> index c712677..f69e30a 100644
> --- a/arch/microblaze/include/uapi/asm/unistd.h
> +++ b/arch/microblaze/include/uapi/asm/unistd.h
> @@ -403,5 +403,6 @@
> #define __NR_getrandom 385
> #define __NR_memfd_create 386
> #define __NR_bpf 387
> +#define __NR_sendfd 388
>
> #endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */
> diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
> index 0166e89..1550f45 100644
> --- a/arch/microblaze/kernel/syscall_table.S
> +++ b/arch/microblaze/kernel/syscall_table.S
> @@ -388,3 +388,4 @@ ENTRY(sys_call_table)
> .long sys_getrandom /* 385 */
> .long sys_memfd_create
> .long sys_bpf
> + .long sys_sendfd
> diff --git a/arch/mips/include/uapi/asm/unistd.h b/arch/mips/include/uapi/asm/unistd.h
> index d001bb1..24109dc 100644
> --- a/arch/mips/include/uapi/asm/unistd.h
> +++ b/arch/mips/include/uapi/asm/unistd.h
> @@ -376,16 +376,17 @@
> #define __NR_getrandom (__NR_Linux + 353)
> #define __NR_memfd_create (__NR_Linux + 354)
> #define __NR_bpf (__NR_Linux + 355)
> +#define __NR_sendfd (__NR_Linux + 356)
>
> /*
> * Offset of the last Linux o32 flavoured syscall
> */
> -#define __NR_Linux_syscalls 355
> +#define __NR_Linux_syscalls 356
>
> #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
>
> #define __NR_O32_Linux 4000
> -#define __NR_O32_Linux_syscalls 355
> +#define __NR_O32_Linux_syscalls 356
>
> #if _MIPS_SIM == _MIPS_SIM_ABI64
>
> @@ -709,16 +710,17 @@
> #define __NR_getrandom (__NR_Linux + 313)
> #define __NR_memfd_create (__NR_Linux + 314)
> #define __NR_bpf (__NR_Linux + 315)
> +#define __NR_sendfd (__NR_Linux + 316)
>
> /*
> * Offset of the last Linux 64-bit flavoured syscall
> */
> -#define __NR_Linux_syscalls 315
> +#define __NR_Linux_syscalls 316
>
> #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
>
> #define __NR_64_Linux 5000
> -#define __NR_64_Linux_syscalls 315
> +#define __NR_64_Linux_syscalls 316
>
> #if _MIPS_SIM == _MIPS_SIM_NABI32
>
> @@ -1046,15 +1048,16 @@
> #define __NR_getrandom (__NR_Linux + 317)
> #define __NR_memfd_create (__NR_Linux + 318)
> #define __NR_bpf (__NR_Linux + 319)
> +#define __NR_sendfd (__NR_Linux + 320)
>
> /*
> * Offset of the last N32 flavoured syscall
> */
> -#define __NR_Linux_syscalls 319
> +#define __NR_Linux_syscalls 320
>
> #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
>
> #define __NR_N32_Linux 6000
> -#define __NR_N32_Linux_syscalls 319
> +#define __NR_N32_Linux_syscalls 320
>
> #endif /* _UAPI_ASM_UNISTD_H */
> diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
> index 00cad10..94a7014 100644
> --- a/arch/mips/kernel/scall32-o32.S
> +++ b/arch/mips/kernel/scall32-o32.S
> @@ -580,3 +580,4 @@ EXPORT(sys_call_table)
> PTR sys_getrandom
> PTR sys_memfd_create
> PTR sys_bpf /* 4355 */
> + PTR sys_sendfd
> diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
> index 5251565..cc2440d 100644
> --- a/arch/mips/kernel/scall64-64.S
> +++ b/arch/mips/kernel/scall64-64.S
> @@ -435,4 +435,5 @@ EXPORT(sys_call_table)
> PTR sys_getrandom
> PTR sys_memfd_create
> PTR sys_bpf /* 5315 */
> + PTR sys_sendfd
> .size sys_call_table,.-sys_call_table
> diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
> index 77e7439..ff1de3a 100644
> --- a/arch/mips/kernel/scall64-n32.S
> +++ b/arch/mips/kernel/scall64-n32.S
> @@ -428,4 +428,5 @@ EXPORT(sysn32_call_table)
> PTR sys_getrandom
> PTR sys_memfd_create
> PTR sys_bpf
> + PTR sys_sendfd
> .size sysn32_call_table,.-sysn32_call_table
> diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
> index 6f8db9f..87d3a33 100644
> --- a/arch/mips/kernel/scall64-o32.S
> +++ b/arch/mips/kernel/scall64-o32.S
> @@ -565,4 +565,5 @@ EXPORT(sys32_call_table)
> PTR sys_getrandom
> PTR sys_memfd_create
> PTR sys_bpf /* 4355 */
> + PTR sys_sendfd
> .size sys32_call_table,.-sys32_call_table
> diff --git a/arch/parisc/include/uapi/asm/unistd.h b/arch/parisc/include/uapi/asm/unistd.h
> index 5f5c037..f182787 100644
> --- a/arch/parisc/include/uapi/asm/unistd.h
> +++ b/arch/parisc/include/uapi/asm/unistd.h
> @@ -834,8 +834,9 @@
> #define __NR_getrandom (__NR_Linux + 339)
> #define __NR_memfd_create (__NR_Linux + 340)
> #define __NR_bpf (__NR_Linux + 341)
> +#define __NR_sendfd (__NR_Linux + 342)
>
> -#define __NR_Linux_syscalls (__NR_bpf + 1)
> +#define __NR_Linux_syscalls (__NR_sendfd + 1)
>
>
> #define __IGNORE_select /* newselect */
> diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
> index ce9577d..4aa6c22 100644
> --- a/arch/powerpc/include/asm/systbl.h
> +++ b/arch/powerpc/include/asm/systbl.h
> @@ -366,3 +366,4 @@ SYSCALL_SPU(seccomp)
> SYSCALL_SPU(getrandom)
> SYSCALL_SPU(memfd_create)
> SYSCALL_SPU(bpf)
> +SYSCALL_SPU(sendfd)
> diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
> index f55351f..2d55338 100644
> --- a/arch/powerpc/include/uapi/asm/unistd.h
> +++ b/arch/powerpc/include/uapi/asm/unistd.h
> @@ -384,5 +384,6 @@
> #define __NR_getrandom 359
> #define __NR_memfd_create 360
> #define __NR_bpf 361
> +#define __NR_sendfd 362
>
> #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
> diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h
> index 4197c89..7248c4a 100644
> --- a/arch/s390/include/uapi/asm/unistd.h
> +++ b/arch/s390/include/uapi/asm/unistd.h
> @@ -287,7 +287,8 @@
> #define __NR_getrandom 349
> #define __NR_memfd_create 350
> #define __NR_bpf 351
> -#define NR_syscalls 352
> +#define __NR_sendfd 352
> +#define NR_syscalls 353
>
> /*
> * There are some system calls that are not present on 64 bit, some
> diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
> index c4f7a3d..d931326 100644
> --- a/arch/s390/kernel/compat_wrapper.c
> +++ b/arch/s390/kernel/compat_wrapper.c
> @@ -218,3 +218,4 @@ COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char
> COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags)
> COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags)
> COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size);
> +COMPAT_SYSCALL_WRAP3(sendfd, pid_t, pid, int, sig, int, fd);
> diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
> index 9f7087f..b1beaf1 100644
> --- a/arch/s390/kernel/syscalls.S
> +++ b/arch/s390/kernel/syscalls.S
> @@ -360,3 +360,4 @@ SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp)
> SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom)
> SYSCALL(sys_memfd_create,sys_memfd_create,compat_sys_memfd_create) /* 350 */
> SYSCALL(sys_bpf,sys_bpf,compat_sys_bpf)
> +SYSCALL(sys_sendfd,sys_sendfd,compat_sys_sendfd)
> diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h
> index 46d8384..a43637a 100644
> --- a/arch/sparc/include/uapi/asm/unistd.h
> +++ b/arch/sparc/include/uapi/asm/unistd.h
> @@ -415,8 +415,9 @@
> #define __NR_getrandom 347
> #define __NR_memfd_create 348
> #define __NR_bpf 349
> +#define __NR_sendfd 350
>
> -#define NR_syscalls 350
> +#define NR_syscalls 351
>
> /* Bitmask values returned from kern_features system call. */
> #define KERN_FEATURE_MIXED_MODE_STACK 0x00000001
> diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
> index ad0cdf4..1b3ff92 100644
> --- a/arch/sparc/kernel/systbls_32.S
> +++ b/arch/sparc/kernel/systbls_32.S
> @@ -86,4 +86,4 @@ sys_call_table:
> /*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
> /*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
> /*340*/ .long sys_ni_syscall, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
> -/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
> +/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf, sys_sendfd
> diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
> index 580cde9..ebbafb1 100644
> --- a/arch/sparc/kernel/systbls_64.S
> +++ b/arch/sparc/kernel/systbls_64.S
> @@ -87,7 +87,7 @@ sys_call_table32:
> /*330*/ .word compat_sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime
> .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev
> /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
> - .word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
> + .word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf, sys_sendfd
>
> #endif /* CONFIG_COMPAT */
>
> @@ -166,4 +166,4 @@ sys_call_table:
> /*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
> .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
> /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr
> - .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
> + .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf, sys_sendfd
> diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
> index 9fe1b5d..dfe91f7 100644
> --- a/arch/x86/syscalls/syscall_32.tbl
> +++ b/arch/x86/syscalls/syscall_32.tbl
> @@ -364,3 +364,4 @@
> 355 i386 getrandom sys_getrandom
> 356 i386 memfd_create sys_memfd_create
> 357 i386 bpf sys_bpf
> +358 i386 sendfd sys_sendfd
> diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
> index 281150b..4d6b55d 100644
> --- a/arch/x86/syscalls/syscall_64.tbl
> +++ b/arch/x86/syscalls/syscall_64.tbl
> @@ -328,6 +328,7 @@
> 319 common memfd_create sys_memfd_create
> 320 common kexec_file_load sys_kexec_file_load
> 321 common bpf sys_bpf
> +322 common sendfd sys_sendfd
>
> #
> # x32-specific system call numbers start at 512 to avoid cache impact
> diff --git a/arch/xtensa/include/uapi/asm/unistd.h b/arch/xtensa/include/uapi/asm/unistd.h
> index db5bb72..3705d28 100644
> --- a/arch/xtensa/include/uapi/asm/unistd.h
> +++ b/arch/xtensa/include/uapi/asm/unistd.h
> @@ -749,8 +749,9 @@ __SYSCALL(337, sys_seccomp, 3)
> __SYSCALL(338, sys_getrandom, 3)
> #define __NR_memfd_create 339
> __SYSCALL(339, sys_memfd_create, 2)
> -
> -#define __NR_syscall_count 340
> +#define __NR_sendfd 340
> +__SYSCALL(340, sys_sendfd, 3)
> +#define __NR_syscall_count 341
>
> /*
> * sysxtensa syscall handler
> diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
> index bda9b81..1871b72f 100644
> --- a/include/linux/syscalls.h
> +++ b/include/linux/syscalls.h
> @@ -877,4 +877,5 @@ asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
> asmlinkage long sys_getrandom(char __user *buf, size_t count,
> unsigned int flags);
> asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
> +asmlinkage long sys_sendfd(pid_t pid, int sig, int fd);
> #endif
> diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
> index 22749c1..270aa02 100644
> --- a/include/uapi/asm-generic/unistd.h
> +++ b/include/uapi/asm-generic/unistd.h
> @@ -707,9 +707,11 @@ __SYSCALL(__NR_getrandom, sys_getrandom)
> __SYSCALL(__NR_memfd_create, sys_memfd_create)
> #define __NR_bpf 280
> __SYSCALL(__NR_bpf, sys_bpf)
> +#define __NR_sendfd 281
> +__SYSCALL(__NR_sendfd, sys_sendfd)
>
> #undef __NR_syscalls
> -#define __NR_syscalls 281
> +#define __NR_syscalls 282
>
> /*
> * All syscalls below here should go away really,
> diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
> index 02aa418..353cddb 100644
> --- a/kernel/sys_ni.c
> +++ b/kernel/sys_ni.c
> @@ -224,3 +224,6 @@ cond_syscall(sys_seccomp);
>
> /* access BPF programs and maps */
> cond_syscall(sys_bpf);
> +
> +/* send file descriptor to another process */
> +cond_syscall(sys_sendfd);
> --
> 1.8.3.2
>
> --
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--
Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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Next message: Tomeu Vizoso: "[PATCH v7 1/7] clk: Remove unused function __clk_get_prepare_count"
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