ns: Wire up the setns system call

32bit and 64bit on x86 are tested and working. The rest I have looked at closely and I can't find any problems. setns is an easy system call to wire up. It just takes two ints so I don't expect any weird architecture porting problems. While doing this I have noticed that we have some architectures that are very slow to get new system calls. cris seems to be the slowest where the last system calls wired up were preadv and pwritev. avr32 is weird in that recvmmsg was wired up but never declared in unistd.h. frv is behind with perf_event_open being the last syscall wired up. On h8300 the last system call wired up was epoll_wait. On m32r the last system call wired up was fallocate. mn10300 has recvmmsg as the last system call wired up. The rest seem to at least have syncfs wired up which was new in the 2.6.39. v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com> v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com> v4: Moved wiring up of the system call to another patch v5: ported to v2.6.39-rc6 v6: rebased onto parisc-next and net-next to avoid syscall conflicts. v7: ported to Linus's latest post 2.6.39 tree. > arch/blackfin/include/asm/unistd.h | 3 ++- > arch/blackfin/mach-common/entry.S | 1 + Acked-by: Mike Frysinger <vapier@gentoo.org> Oh - ia64 wiring looks good. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
aixiaorenzhe · May 28, 2011 · 7b21fdd · 7b21fdd
1 parent 14d74e0
commit 7b21fdd
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diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
@@ -456,10 +456,11 @@
 #define __NR_open_by_handle_at		498
 #define __NR_clock_adjtime		499
 #define __NR_syncfs			500
+#define __NR_setns			501
 
 #ifdef __KERNEL__
 
-#define NR_SYSCALLS			501
+#define NR_SYSCALLS			502
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
@@ -519,6 +519,7 @@ sys_call_table:
 	.quad sys_open_by_handle_at
 	.quad sys_clock_adjtime
 	.quad sys_syncfs			/* 500 */
+	.quad sys_setns
 
 	.size sys_call_table, . - sys_call_table
 	.type sys_call_table, @object

diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
@@ -400,6 +400,7 @@
 #define __NR_open_by_handle_at		(__NR_SYSCALL_BASE+371)
 #define __NR_clock_adjtime		(__NR_SYSCALL_BASE+372)
 #define __NR_syncfs			(__NR_SYSCALL_BASE+373)
+#define __NR_setns			(__NR_SYSCALL_BASE+374)
 
 /*
  * The following SWIs are ARM private.

diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
@@ -383,6 +383,7 @@
 		CALL(sys_open_by_handle_at)
 		CALL(sys_clock_adjtime)
 		CALL(sys_syncfs)
+		CALL(sys_setns)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted

diff --git a/arch/avr32/include/asm/unistd.h b/arch/avr32/include/asm/unistd.h
@@ -299,9 +299,10 @@
 #define __NR_signalfd		279
 /* 280 was __NR_timerfd */
 #define __NR_eventfd		281
+#define __NR_setns		283
 
 #ifdef __KERNEL__
-#define NR_syscalls		282
+#define NR_syscalls		284
 
 /* Old stuff */
 #define __IGNORE_uselib

diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
@@ -296,4 +296,5 @@ sys_call_table:
 	.long	sys_ni_syscall		/* 280, was sys_timerfd */
 	.long	sys_eventfd
 	.long	sys_recvmmsg
+	.long	sys_setns
 	.long	sys_ni_syscall		/* r8 is saturated at nr_syscalls */
diff --git a/arch/blackfin/include/asm/unistd.h b/arch/blackfin/include/asm/unistd.h
@@ -397,8 +397,9 @@
 #define __NR_open_by_handle_at	376
 #define __NR_clock_adjtime	377
 #define __NR_syncfs		378
+#define __NR_setns		379
 
-#define __NR_syscall		379
+#define __NR_syscall		380
 #define NR_syscalls		__NR_syscall
 
 /* Old optional stuff no one actually uses */

diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
@@ -1753,6 +1753,7 @@ ENTRY(_sys_call_table)
 	.long _sys_open_by_handle_at
 	.long _sys_clock_adjtime
 	.long _sys_syncfs
+	.long _sys_setns
 
 	.rept NR_syscalls-(.-_sys_call_table)/4
 	.long _sys_ni_syscall

diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S
@@ -937,6 +937,7 @@ sys_call_table:
 	.long sys_inotify_init1
 	.long sys_preadv
 	.long sys_pwritev
+	.long sys_setns			/* 335 */
 
         /*
          * NOTE!! This doesn't have to be exact - we just have

diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
@@ -880,6 +880,7 @@ sys_call_table:
 	.long sys_inotify_init1
 	.long sys_preadv
 	.long sys_pwritev
+	.long sys_setns			/* 335 */
 
         /*
          * NOTE!! This doesn't have to be exact - we just have

diff --git a/arch/cris/include/asm/unistd.h b/arch/cris/include/asm/unistd.h
@@ -339,10 +339,11 @@
 #define __NR_inotify_init1	332
 #define __NR_preadv		333
 #define __NR_pwritev		334
+#define __NR_setns		335
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 335
+#define NR_syscalls 336
 
 #include <arch/unistd.h>
 

diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h
@@ -343,10 +343,11 @@
 #define __NR_pwritev		334
 #define __NR_rt_tgsigqueueinfo	335
 #define __NR_perf_event_open	336
+#define __NR_setns		337
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 337
+#define NR_syscalls 338
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 /* #define __ARCH_WANT_OLD_READDIR */

diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S
@@ -1526,5 +1526,6 @@ sys_call_table:
 	.long sys_pwritev
 	.long sys_rt_tgsigqueueinfo	/* 335 */
 	.long sys_perf_event_open
+	.long sys_setns
 
 syscall_table_size = (. - sys_call_table)
diff --git a/arch/h8300/include/asm/unistd.h b/arch/h8300/include/asm/unistd.h
@@ -325,10 +325,11 @@
 #define __NR_move_pages		317
 #define __NR_getcpu		318
 #define __NR_epoll_pwait	319
+#define __NR_setns		320
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 320
+#define NR_syscalls 321
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

diff --git a/arch/h8300/kernel/syscalls.S b/arch/h8300/kernel/syscalls.S
@@ -333,6 +333,7 @@ SYMBOL_NAME_LABEL(sys_call_table)
 	.long SYMBOL_NAME(sys_ni_syscall)	/* sys_move_pages */
 	.long SYMBOL_NAME(sys_getcpu)
 	.long SYMBOL_NAME(sys_ni_syscall)	/* sys_epoll_pwait */
+	.long SYMBOL_NAME(sys_setns)		/* 320 */
 
 	.macro	call_sp addr
 	mov.l	#SYMBOL_NAME(\addr),er6

diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
@@ -319,11 +319,12 @@
 #define __NR_open_by_handle_at  	1327
 #define __NR_clock_adjtime		1328
 #define __NR_syncfs			1329
+#define __NR_setns			1330
 
 #ifdef __KERNEL__
 
 
-#define NR_syscalls			306 /* length of syscall table */
+#define NR_syscalls			307 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about

diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
@@ -1775,6 +1775,7 @@ sys_call_table:
 	data8 sys_open_by_handle_at
 	data8 sys_clock_adjtime
 	data8 sys_syncfs
+	data8 sys_setns				// 1330
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls
 #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */
diff --git a/arch/m32r/include/asm/unistd.h b/arch/m32r/include/asm/unistd.h
@@ -330,10 +330,11 @@
 /* #define __NR_timerfd		322 removed */
 #define __NR_eventfd		323
 #define __NR_fallocate		324
+#define __NR_setns		325
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 325
+#define NR_syscalls 326
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_STAT64

diff --git a/arch/m32r/kernel/syscall_table.S b/arch/m32r/kernel/syscall_table.S
@@ -324,3 +324,4 @@ ENTRY(sys_call_table)
 	.long sys_ni_syscall
 	.long sys_eventfd
 	.long sys_fallocate
+	.long sys_setns			/* 325 */
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
@@ -349,10 +349,11 @@
 #define __NR_open_by_handle_at	341
 #define __NR_clock_adjtime	342
 #define __NR_syncfs		343
+#define __NR_setns		344
 
 #ifdef __KERNEL__
 
-#define NR_syscalls		344
+#define NR_syscalls		345
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR

diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S
@@ -364,4 +364,5 @@ ENTRY(sys_call_table)
 	.long sys_open_by_handle_at
 	.long sys_clock_adjtime
 	.long sys_syncfs
+	.long sys_setns
 
diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
@@ -390,8 +390,9 @@
 #define __NR_open_by_handle_at	372
 #define __NR_clock_adjtime	373
 #define __NR_syncfs		374
+#define __NR_setns		375
 
-#define __NR_syscalls		375
+#define __NR_syscalls		376
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__

diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
@@ -379,3 +379,4 @@ ENTRY(sys_call_table)
 	.long sys_open_by_handle_at
 	.long sys_clock_adjtime
 	.long sys_syncfs
+	.long sys_setns			/* 375 */
diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h
@@ -363,16 +363,17 @@
 #define __NR_open_by_handle_at		(__NR_Linux + 340)
 #define __NR_clock_adjtime		(__NR_Linux + 341)
 #define __NR_syncfs			(__NR_Linux + 342)
+#define __NR_setns			(__NR_Linux + 343)
 
 /*
  * Offset of the last Linux o32 flavoured syscall
  */
-#define __NR_Linux_syscalls		342
+#define __NR_Linux_syscalls		343
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux			4000
-#define __NR_O32_Linux_syscalls		342
+#define __NR_O32_Linux_syscalls		343
 
 #if _MIPS_SIM == _MIPS_SIM_ABI64
 
@@ -682,16 +683,17 @@
 #define __NR_open_by_handle_at		(__NR_Linux + 299)
 #define __NR_clock_adjtime		(__NR_Linux + 300)
 #define __NR_syncfs			(__NR_Linux + 301)
+#define __NR_setns			(__NR_Linux + 302)
 
 /*
  * Offset of the last Linux 64-bit flavoured syscall
  */
-#define __NR_Linux_syscalls		301
+#define __NR_Linux_syscalls		302
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux			5000
-#define __NR_64_Linux_syscalls		301
+#define __NR_64_Linux_syscalls		302
 
 #if _MIPS_SIM == _MIPS_SIM_NABI32
 
@@ -1006,16 +1008,17 @@
 #define __NR_open_by_handle_at		(__NR_Linux + 304)
 #define __NR_clock_adjtime		(__NR_Linux + 305)
 #define __NR_syncfs			(__NR_Linux + 306)
+#define __NR_setns			(__NR_Linux + 307)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls		306
+#define __NR_Linux_syscalls		307
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000
-#define __NR_N32_Linux_syscalls		306
+#define __NR_N32_Linux_syscalls		307
 
 #ifdef __KERNEL__
 

diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
@@ -589,6 +589,7 @@ einval:	li	v0, -ENOSYS
 	sys	sys_open_by_handle_at	3	/* 4340 */
 	sys	sys_clock_adjtime	2
 	sys	sys_syncfs		1
+	sys	sys_setns		2
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to

diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
@@ -428,4 +428,5 @@ sys_call_table:
 	PTR	sys_open_by_handle_at
 	PTR	sys_clock_adjtime		/* 5300 */
 	PTR	sys_syncfs
+	PTR	sys_setns
 	.size	sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
@@ -428,4 +428,5 @@ EXPORT(sysn32_call_table)
 	PTR	sys_open_by_handle_at
 	PTR	compat_sys_clock_adjtime	/* 6305 */
 	PTR	sys_syncfs
+	PTR	sys_setns
 	.size	sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
@@ -546,4 +546,5 @@ sys_call_table:
 	PTR	compat_sys_open_by_handle_at	/* 4340 */
 	PTR	compat_sys_clock_adjtime
 	PTR	sys_syncfs
+	PTR	sys_setns
 	.size	sys_call_table,.-sys_call_table
diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h
@@ -349,10 +349,11 @@
 #define __NR_rt_tgsigqueueinfo	336
 #define __NR_perf_event_open	337
 #define __NR_recvmmsg		338
+#define __NR_setns		339
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 339
+#define NR_syscalls 340
 
 /*
  * specify the deprecated syscalls we want to support on this arch

diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S
@@ -759,6 +759,7 @@ ENTRY(sys_call_table)
 	.long sys_rt_tgsigqueueinfo
 	.long sys_perf_event_open
 	.long sys_recvmmsg
+	.long sys_setns
 
 
 nr_syscalls=(.-sys_call_table)/4
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
@@ -820,8 +820,9 @@
 #define __NR_name_to_handle_at	(__NR_Linux + 325)
 #define __NR_open_by_handle_at	(__NR_Linux + 326)
 #define __NR_syncfs		(__NR_Linux + 327)
+#define __NR_setns		(__NR_Linux + 328)
 
-#define __NR_Linux_syscalls	(__NR_syncfs + 1)
+#define __NR_Linux_syscalls	(__NR_setns + 1)
 
 
 #define __IGNORE_select		/* newselect */

diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
@@ -426,6 +426,7 @@
 	ENTRY_SAME(name_to_handle_at)	/* 325 */
 	ENTRY_COMP(open_by_handle_at)
 	ENTRY_SAME(syncfs)
+	ENTRY_SAME(setns)
 
 	/* Nothing yet */
 

diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
@@ -353,3 +353,4 @@ COMPAT_SYS_SPU(open_by_handle_at)
 COMPAT_SYS_SPU(clock_adjtime)
 SYSCALL_SPU(syncfs)
 COMPAT_SYS_SPU(sendmmsg)
+SYSCALL_SPU(setns)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
@@ -372,10 +372,11 @@
 #define __NR_clock_adjtime	347
 #define __NR_syncfs		348
 #define __NR_sendmmsg		349
+#define __NR_setns		350
 
 #ifdef __KERNEL__
 
-#define __NR_syscalls		350
+#define __NR_syscalls		351
 
 #define __NR__exit __NR_exit
 #define NR_syscalls	__NR_syscalls

diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
@@ -276,7 +276,8 @@
 #define __NR_open_by_handle_at	336
 #define __NR_clock_adjtime	337
 #define __NR_syncfs		338
-#define NR_syscalls 339
+#define __NR_setns		339
+#define NR_syscalls 340
 
 /* 
  * There are some system calls that are not present on 64 bit, some

diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
@@ -1904,3 +1904,9 @@ compat_sys_clock_adjtime_wrapper:
 sys_syncfs_wrapper:
 	lgfr	%r2,%r2			# int
 	jg	sys_syncfs
+
+	.globl	sys_setns_wrapper
+sys_setns_wrapper:
+	lgfr	%r2,%r2			# int
+	lgfr	%r3,%r3			# int
+	jg	sys_setns
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
@@ -347,3 +347,4 @@ SYSCALL(sys_name_to_handle_at,sys_name_to_handle_at,sys_name_to_handle_at_wrappe
 SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at_wrapper)
 SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime_wrapper)
 SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
+SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h
@@ -374,8 +374,9 @@
 #define __NR_clock_adjtime	361
 #define __NR_syncfs		362
 #define __NR_sendmmsg		363
+#define __NR_setns		364
 
-#define NR_syscalls 364
+#define NR_syscalls 365
 
 #ifdef __KERNEL__