syscalls: Cleanup references to sys_lookup_dcookie()

sohilmeh · arndb · commit ccab211af3c2 · 2023-10-03T19:51:37.000+02:00
commit 'be65de6b03aa ("fs: Remove dcookies support")' removed the
syscall definition for lookup_dcookie.  However, syscall tables still
point to the old sys_lookup_dcookie() definition. Update syscall tables
of all architectures to directly point to sys_ni_syscall() instead.

Signed-off-by: Sohil Mehta &lt;sohil.mehta@intel.com&gt;
Reviewed-by: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Acked-by: Namhyung Kim &lt;namhyung@kernel.org&gt; # for perf
Acked-by: Russell King (Oracle) &lt;rmk+kernel@armlinux.org.uk&gt;
Acked-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -334,7 +334,7 @@
 401	common	io_submit			sys_io_submit
 402	common	io_cancel			sys_io_cancel
 405	common	exit_group			sys_exit_group
-406	common	lookup_dcookie			sys_lookup_dcookie
+406	common	lookup_dcookie			sys_ni_syscall
 407	common	epoll_create			sys_epoll_create
 408	common	epoll_ctl			sys_epoll_ctl
 409	common	epoll_wait			sys_epoll_wait
diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
@@ -263,7 +263,7 @@
 246	common	io_submit		sys_io_submit
 247	common	io_cancel		sys_io_cancel
 248	common	exit_group		sys_exit_group
-249	common	lookup_dcookie		sys_lookup_dcookie
+249	common	lookup_dcookie		sys_ni_syscall
 250	common	epoll_create		sys_epoll_create
 251	common	epoll_ctl		sys_epoll_ctl		sys_oabi_epoll_ctl
 252	common	epoll_wait		sys_epoll_wait
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
@@ -508,8 +508,8 @@ __SYSCALL(__NR_io_submit, compat_sys_io_submit)
 __SYSCALL(__NR_io_cancel, sys_io_cancel)
 #define __NR_exit_group 248
 __SYSCALL(__NR_exit_group, sys_exit_group)
-#define __NR_lookup_dcookie 249
-__SYSCALL(__NR_lookup_dcookie, compat_sys_lookup_dcookie)
+			/* 249 was lookup_dcookie */
+__SYSCALL(249, sys_ni_syscall)
 #define __NR_epoll_create 250
 __SYSCALL(__NR_epoll_create, sys_epoll_create)
 #define __NR_epoll_ctl 251
diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
@@ -255,7 +255,7 @@
 245	common	io_cancel			sys_io_cancel
 246	common	fadvise64			sys_fadvise64
 247	common	exit_group			sys_exit_group
-248	common	lookup_dcookie			sys_lookup_dcookie
+248	common	lookup_dcookie			sys_ni_syscall
 249	common	epoll_create			sys_epoll_create
 250	common	epoll_ctl			sys_epoll_ctl
 251	common	epoll_wait			sys_epoll_wait
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -260,7 +260,7 @@
 250	common	fadvise64			sys_fadvise64
 # 251 is available for reuse (was briefly sys_set_zone_reclaim)
 252	common	exit_group			sys_exit_group
-253	common	lookup_dcookie			sys_lookup_dcookie
+253	common	lookup_dcookie			sys_ni_syscall
 254	common	epoll_create			sys_epoll_create
 255	common	epoll_ctl			sys_epoll_ctl
 256	common	epoll_wait			sys_epoll_wait
diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
@@ -214,7 +214,7 @@
 203	n32	io_submit			compat_sys_io_submit
 204	n32	io_cancel			sys_io_cancel
 205	n32	exit_group			sys_exit_group
-206	n32	lookup_dcookie			sys_lookup_dcookie
+206	n32	lookup_dcookie			sys_ni_syscall
 207	n32	epoll_create			sys_epoll_create
 208	n32	epoll_ctl			sys_epoll_ctl
 209	n32	epoll_wait			sys_epoll_wait
diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl
@@ -214,7 +214,7 @@
 203	n64	io_submit			sys_io_submit
 204	n64	io_cancel			sys_io_cancel
 205	n64	exit_group			sys_exit_group
-206	n64	lookup_dcookie			sys_lookup_dcookie
+206	n64	lookup_dcookie			sys_ni_syscall
 207	n64	epoll_create			sys_epoll_create
 208	n64	epoll_ctl			sys_epoll_ctl
 209	n64	epoll_wait			sys_epoll_wait
diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
@@ -258,7 +258,7 @@
 244	o32	io_submit			sys_io_submit			compat_sys_io_submit
 245	o32	io_cancel			sys_io_cancel
 246	o32	exit_group			sys_exit_group
-247	o32	lookup_dcookie			sys_lookup_dcookie		compat_sys_lookup_dcookie
+247	o32	lookup_dcookie			sys_ni_syscall
 248	o32	epoll_create			sys_epoll_create
 249	o32	epoll_ctl			sys_epoll_ctl
 250	o32	epoll_wait			sys_epoll_wait
diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
@@ -245,7 +245,7 @@
 # 220 was alloc_hugepages
 # 221 was free_hugepages
 222	common	exit_group		sys_exit_group
-223	common	lookup_dcookie		sys_lookup_dcookie		compat_sys_lookup_dcookie
+223	common	lookup_dcookie		sys_ni_syscall
 224	common	epoll_create		sys_epoll_create
 225	common	epoll_ctl		sys_epoll_ctl
 226	common	epoll_wait		sys_epoll_wait
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -294,7 +294,7 @@
 233	32	fadvise64			sys_ppc32_fadvise64		compat_sys_ppc32_fadvise64
 233	64	fadvise64			sys_fadvise64
 234	nospu	exit_group			sys_exit_group
-235	nospu	lookup_dcookie			sys_lookup_dcookie		compat_sys_lookup_dcookie
+235	nospu	lookup_dcookie			sys_ni_syscall
 236	common	epoll_create			sys_epoll_create
 237	common	epoll_ctl			sys_epoll_ctl
 238	common	epoll_wait			sys_epoll_wait
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
@@ -100,7 +100,7 @@
 106  common	stat			sys_newstat			compat_sys_newstat
 107  common	lstat			sys_newlstat			compat_sys_newlstat
 108  common	fstat			sys_newfstat			compat_sys_newfstat
-110  common	lookup_dcookie		sys_lookup_dcookie		compat_sys_lookup_dcookie
+110  common	lookup_dcookie		-				-
 111  common	vhangup			sys_vhangup			sys_vhangup
 112  common	idle			-				-
 114  common	wait4			sys_wait4			compat_sys_wait4
diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
@@ -260,7 +260,7 @@
 250	common	fadvise64			sys_fadvise64
 # 251 is unused
 252	common	exit_group			sys_exit_group
-253	common	lookup_dcookie			sys_lookup_dcookie
+253	common	lookup_dcookie			sys_ni_syscall
 254	common	epoll_create			sys_epoll_create
 255	common	epoll_ctl			sys_epoll_ctl
 256	common	epoll_wait			sys_epoll_wait
diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
@@ -249,7 +249,7 @@
 205	common	readahead		sys_readahead			compat_sys_readahead
 206	common	socketcall		sys_socketcall			sys32_socketcall
 207	common	syslog			sys_syslog
-208	common	lookup_dcookie		sys_lookup_dcookie		compat_sys_lookup_dcookie
+208	common	lookup_dcookie		sys_ni_syscall
 209	common	fadvise64		sys_fadvise64			compat_sys_fadvise64
 210	common	fadvise64_64		sys_fadvise64_64		compat_sys_fadvise64_64
 211	common	tgkill			sys_tgkill
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -264,7 +264,7 @@
 250	i386	fadvise64		sys_ia32_fadvise64
 # 251 is available for reuse (was briefly sys_set_zone_reclaim)
 252	i386	exit_group		sys_exit_group
-253	i386	lookup_dcookie		sys_lookup_dcookie		compat_sys_lookup_dcookie
+253	i386	lookup_dcookie
 254	i386	epoll_create		sys_epoll_create
 255	i386	epoll_ctl		sys_epoll_ctl
 256	i386	epoll_wait		sys_epoll_wait
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -220,7 +220,7 @@
 209	64	io_submit		sys_io_submit
 210	common	io_cancel		sys_io_cancel
 211	64	get_thread_area
-212	common	lookup_dcookie		sys_lookup_dcookie
+212	common	lookup_dcookie
 213	common	epoll_create		sys_epoll_create
 214	64	epoll_ctl_old
 215	64	epoll_wait_old
diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
@@ -273,7 +273,7 @@
 252	common	timer_getoverrun		sys_timer_getoverrun
 # System
 253	common	reserved253			sys_ni_syscall
-254	common	lookup_dcookie			sys_lookup_dcookie
+254	common	lookup_dcookie			sys_ni_syscall
 255	common	available255			sys_ni_syscall
 256	common	add_key				sys_add_key
 257	common	request_key			sys_request_key
diff --git a/include/linux/compat.h b/include/linux/compat.h
@@ -581,7 +581,6 @@ asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id,
 					struct io_event __user *events,
 					struct __kernel_timespec __user *timeout,
 					const struct __compat_aio_sigset __user *usig);
-asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
 asmlinkage long compat_sys_epoll_pwait(int epfd,
 			struct epoll_event __user *events,
 			int maxevents, int timeout,
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
@@ -355,7 +355,6 @@ asmlinkage long sys_lremovexattr(const char __user *path,
 				 const char __user *name);
 asmlinkage long sys_fremovexattr(int fd, const char __user *name);
 asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
-asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
 asmlinkage long sys_eventfd2(unsigned int count, int flags);
 asmlinkage long sys_epoll_create1(int flags);
 asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
@@ -71,7 +71,7 @@ __SYSCALL(__NR_fremovexattr, sys_fremovexattr)
 #define __NR_getcwd 17
 __SYSCALL(__NR_getcwd, sys_getcwd)
 #define __NR_lookup_dcookie 18
-__SC_COMP(__NR_lookup_dcookie, sys_lookup_dcookie, compat_sys_lookup_dcookie)
+__SYSCALL(__NR_lookup_dcookie, sys_ni_syscall)
 #define __NR_eventfd2 19
 __SYSCALL(__NR_eventfd2, sys_eventfd2)
 #define __NR_epoll_create1 20
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
@@ -51,8 +51,6 @@ COND_SYSCALL_COMPAT(io_pgetevents);
 COND_SYSCALL(io_uring_setup);
 COND_SYSCALL(io_uring_enter);
 COND_SYSCALL(io_uring_register);
-COND_SYSCALL(lookup_dcookie);
-COND_SYSCALL_COMPAT(lookup_dcookie);
 COND_SYSCALL(eventfd2);
 COND_SYSCALL(epoll_create1);
 COND_SYSCALL(epoll_ctl);
diff --git a/tools/include/uapi/asm-generic/unistd.h b/tools/include/uapi/asm-generic/unistd.h
@@ -71,7 +71,7 @@ __SYSCALL(__NR_fremovexattr, sys_fremovexattr)
 #define __NR_getcwd 17
 __SYSCALL(__NR_getcwd, sys_getcwd)
 #define __NR_lookup_dcookie 18
-__SC_COMP(__NR_lookup_dcookie, sys_lookup_dcookie, compat_sys_lookup_dcookie)
+__SYSCALL(__NR_lookup_dcookie, sys_ni_syscall)
 #define __NR_eventfd2 19
 __SYSCALL(__NR_eventfd2, sys_eventfd2)
 #define __NR_epoll_create1 20
diff --git a/tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl b/tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl
@@ -214,7 +214,7 @@
 203	n64	io_submit			sys_io_submit
 204	n64	io_cancel			sys_io_cancel
 205	n64	exit_group			sys_exit_group
-206	n64	lookup_dcookie			sys_lookup_dcookie
+206	n64	lookup_dcookie			sys_ni_syscall
 207	n64	epoll_create			sys_epoll_create
 208	n64	epoll_ctl			sys_epoll_ctl
 209	n64	epoll_wait			sys_epoll_wait
diff --git a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl b/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
@@ -294,7 +294,7 @@
 233	32	fadvise64			sys_ppc32_fadvise64		compat_sys_ppc32_fadvise64
 233	64	fadvise64			sys_fadvise64
 234	nospu	exit_group			sys_exit_group
-235	nospu	lookup_dcookie			sys_lookup_dcookie		compat_sys_lookup_dcookie
+235	nospu	lookup_dcookie			sys_ni_syscall
 236	common	epoll_create			sys_epoll_create
 237	common	epoll_ctl			sys_epoll_ctl
 238	common	epoll_wait			sys_epoll_wait
diff --git a/tools/perf/arch/s390/entry/syscalls/syscall.tbl b/tools/perf/arch/s390/entry/syscalls/syscall.tbl
@@ -100,7 +100,7 @@
 106  common	stat			sys_newstat			compat_sys_newstat
 107  common	lstat			sys_newlstat			compat_sys_newlstat
 108  common	fstat			sys_newfstat			compat_sys_newfstat
-110  common	lookup_dcookie		sys_lookup_dcookie		compat_sys_lookup_dcookie
+110  common	lookup_dcookie		-				-
 111  common	vhangup			sys_vhangup			sys_vhangup
 112  common	idle			-				-
 114  common	wait4			sys_wait4			compat_sys_wait4
diff --git a/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl b/tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
@@ -220,7 +220,7 @@
 209	64	io_submit		sys_io_submit
 210	common	io_cancel		sys_io_cancel
 211	64	get_thread_area
-212	common	lookup_dcookie		sys_lookup_dcookie
+212	common	lookup_dcookie
 213	common	epoll_create		sys_epoll_create
 214	64	epoll_ctl_old
 215	64	epoll_wait_old
