[PATCH 2/2] fs: Wire up sendfd() syscall (all architectures)
From: Alex Dubov
Date: Mon Dec 01 2014 - 23:35:42 EST
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 +
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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