From 1bd21c6c21e848996339508d3ffb106d505256a8 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 5 Apr 2018 11:53:01 +0200 Subject: syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y It may be useful for an architecture to override the definitions of the SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros in , in particular to use a different calling convention for syscalls. This patch provides a mechanism to do so: It introduces CONFIG_ARCH_HAS_SYSCALL_WRAPPER. If it is enabled, is included in and may be used to define the macros mentioned above. Moreover, as the syscall calling convention may be different if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is set, the syscall function prototypes in are #ifndef'd out in that case. Signed-off-by: Dominik Brodowski Acked-by: Linus Torvalds Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180405095307.3730-3-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- include/linux/syscalls.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index b961184f597a..503ab245d4ce 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -81,6 +81,17 @@ union bpf_attr; #include #include +#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER +/* + * It may be useful for an architecture to override the definitions of the + * SYSCALL_DEFINE0() and __SYSCALL_DEFINEx() macros, in particular to use a + * different calling convention for syscalls. To allow for that, the prototypes + * for the sys_*() functions below will *not* be included if + * CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. + */ +#include +#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ + /* * __MAP - apply a macro to syscall arguments * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to @@ -189,11 +200,13 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) } #endif +#ifndef SYSCALL_DEFINE0 #define SYSCALL_DEFINE0(sname) \ SYSCALL_METADATA(_##sname, 0); \ asmlinkage long sys_##sname(void); \ ALLOW_ERROR_INJECTION(sys_##sname, ERRNO); \ asmlinkage long sys_##sname(void) +#endif /* SYSCALL_DEFINE0 */ #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) @@ -209,6 +222,8 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) + +#ifndef __SYSCALL_DEFINEx #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ __attribute__((alias(__stringify(SyS##name)))); \ @@ -223,6 +238,7 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) return ret; \ } \ static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) +#endif /* __SYSCALL_DEFINEx */ /* * Called before coming back to user-mode. Returning to user-mode with an @@ -252,7 +268,12 @@ static inline void addr_limit_user_check(void) * Please note that these prototypes here are only provided for information * purposes, for static analysis, and for linking from the syscall table. * These functions should not be called elsewhere from kernel code. + * + * As the syscall calling convention may be different from the default + * for architectures overriding the syscall calling convention, do not + * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. */ +#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); asmlinkage long sys_io_destroy(aio_context_t ctx); asmlinkage long sys_io_submit(aio_context_t, long, @@ -1076,6 +1097,8 @@ asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); */ asmlinkage long sys_ni_syscall(void); +#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ + /* * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly. -- cgit v1.2.3-59-g8ed1b From fa697140f9a20119a9ec8fd7460cc4314fbdaff3 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 5 Apr 2018 11:53:02 +0200 Subject: syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls Let's make use of ARCH_HAS_SYSCALL_WRAPPER=y on pure 64-bit x86-64 systems: Each syscall defines a stub which takes struct pt_regs as its only argument. It decodes just those parameters it needs, e.g: asmlinkage long sys_xyzzy(const struct pt_regs *regs) { return SyS_xyzzy(regs->di, regs->si, regs->dx); } This approach avoids leaking random user-provided register content down the call chain. For example, for sys_recv() which is a 4-parameter syscall, the assembly now is (in slightly reordered fashion): : callq <__fentry__> /* decode regs->di, ->si, ->dx and ->r10 */ mov 0x70(%rdi),%rdi mov 0x68(%rdi),%rsi mov 0x60(%rdi),%rdx mov 0x38(%rdi),%rcx [ SyS_recv() is automatically inlined by the compiler, as it is not [yet] used anywhere else ] /* clear %r9 and %r8, the 5th and 6th args */ xor %r9d,%r9d xor %r8d,%r8d /* do the actual work */ callq __sys_recvfrom /* cleanup and return */ cltq retq The only valid place in an x86-64 kernel which rightfully calls a syscall function on its own -- vsyscall -- needs to be modified to pass struct pt_regs onwards as well. To keep the syscall table generation working independent of SYSCALL_PTREGS being enabled, the stubs are named the same as the "original" syscall stubs, i.e. sys_*(). This patch is based on an original proof-of-concept | From: Linus Torvalds | Signed-off-by: Linus Torvalds and was split up and heavily modified by me, in particular to base it on ARCH_HAS_SYSCALL_WRAPPER, to limit it to 64-bit-only for the time being, and to update the vsyscall to the new calling convention. Signed-off-by: Dominik Brodowski Acked-by: Linus Torvalds Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180405095307.3730-4-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 5 +++ arch/x86/entry/common.c | 4 ++ arch/x86/entry/syscall_64.c | 9 ++++- arch/x86/entry/vsyscall/vsyscall_64.c | 22 +++++++++++ arch/x86/include/asm/syscall.h | 4 ++ arch/x86/include/asm/syscall_wrapper.h | 70 ++++++++++++++++++++++++++++++++++ arch/x86/include/asm/syscalls.h | 7 ++++ include/linux/syscalls.h | 2 +- 8 files changed, 120 insertions(+), 3 deletions(-) create mode 100644 arch/x86/include/asm/syscall_wrapper.h (limited to 'include') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 27fede438959..67348efc2540 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2954,3 +2954,8 @@ source "crypto/Kconfig" source "arch/x86/kvm/Kconfig" source "lib/Kconfig" + +config SYSCALL_PTREGS + def_bool y + depends on X86_64 && !COMPAT + select ARCH_HAS_SYSCALL_WRAPPER diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c index a8b066dbbf48..e1b91bffa988 100644 --- a/arch/x86/entry/common.c +++ b/arch/x86/entry/common.c @@ -284,9 +284,13 @@ __visible void do_syscall_64(unsigned long nr, struct pt_regs *regs) nr &= __SYSCALL_MASK; if (likely(nr < NR_syscalls)) { nr = array_index_nospec(nr, NR_syscalls); +#ifdef CONFIG_SYSCALL_PTREGS + regs->ax = sys_call_table[nr](regs); +#else regs->ax = sys_call_table[nr]( regs->di, regs->si, regs->dx, regs->r10, regs->r8, regs->r9); +#endif } syscall_return_slowpath(regs); diff --git a/arch/x86/entry/syscall_64.c b/arch/x86/entry/syscall_64.c index c176d2fab1da..6197850adf91 100644 --- a/arch/x86/entry/syscall_64.c +++ b/arch/x86/entry/syscall_64.c @@ -7,14 +7,19 @@ #include #include +#ifdef CONFIG_SYSCALL_PTREGS +/* this is a lie, but it does not hurt as sys_ni_syscall just returns -EINVAL */ +extern asmlinkage long sys_ni_syscall(const struct pt_regs *); +#define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *); +#else /* CONFIG_SYSCALL_PTREGS */ +extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); #define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); +#endif /* CONFIG_SYSCALL_PTREGS */ #include #undef __SYSCALL_64 #define __SYSCALL_64(nr, sym, qual) [nr] = sym, -extern long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); - asmlinkage const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = { /* * Smells like a compiler bug -- it doesn't work diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c b/arch/x86/entry/vsyscall/vsyscall_64.c index 317be365bce3..05eebbf9b989 100644 --- a/arch/x86/entry/vsyscall/vsyscall_64.c +++ b/arch/x86/entry/vsyscall/vsyscall_64.c @@ -127,6 +127,9 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address) int vsyscall_nr, syscall_nr, tmp; int prev_sig_on_uaccess_err; long ret; +#ifdef CONFIG_SYSCALL_PTREGS + unsigned long orig_dx; +#endif /* * No point in checking CS -- the only way to get here is a user mode @@ -227,19 +230,38 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address) ret = -EFAULT; switch (vsyscall_nr) { case 0: +#ifdef CONFIG_SYSCALL_PTREGS + /* this decodes regs->di and regs->si on its own */ + ret = sys_gettimeofday(regs); +#else ret = sys_gettimeofday( (struct timeval __user *)regs->di, (struct timezone __user *)regs->si); +#endif /* CONFIG_SYSCALL_PTREGS */ break; case 1: +#ifdef CONFIG_SYSCALL_PTREGS + /* this decodes regs->di on its own */ + ret = sys_time(regs); +#else ret = sys_time((time_t __user *)regs->di); +#endif /* CONFIG_SYSCALL_PTREGS */ break; case 2: +#ifdef CONFIG_SYSCALL_PTREGS + /* while we could clobber regs->dx, we didn't in the past... */ + orig_dx = regs->dx; + regs->dx = 0; + /* this decodes regs->di, regs->si and regs->dx on its own */ + ret = sys_getcpu(regs); + regs->dx = orig_dx; +#else ret = sys_getcpu((unsigned __user *)regs->di, (unsigned __user *)regs->si, NULL); +#endif /* CONFIG_SYSCALL_PTREGS */ break; } diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h index 03eedc21246d..17c62373a6f9 100644 --- a/arch/x86/include/asm/syscall.h +++ b/arch/x86/include/asm/syscall.h @@ -20,9 +20,13 @@ #include /* for TS_COMPAT */ #include +#ifdef CONFIG_SYSCALL_PTREGS +typedef asmlinkage long (*sys_call_ptr_t)(const struct pt_regs *); +#else typedef asmlinkage long (*sys_call_ptr_t)(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); +#endif /* CONFIG_SYSCALL_PTREGS */ extern const sys_call_ptr_t sys_call_table[]; #if defined(CONFIG_X86_32) diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h new file mode 100644 index 000000000000..702bdee377af --- /dev/null +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -0,0 +1,70 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * syscall_wrapper.h - x86 specific wrappers to syscall definitions + */ + +#ifndef _ASM_X86_SYSCALL_WRAPPER_H +#define _ASM_X86_SYSCALL_WRAPPER_H + +/* + * Instead of the generic __SYSCALL_DEFINEx() definition, this macro takes + * struct pt_regs *regs as the only argument of the syscall stub named + * sys_*(). It decodes just the registers it needs and passes them on to + * the SyS_*() wrapper and then to the SYSC_*() function doing the actual job. + * These wrappers and functions are inlined, meaning that the assembly looks + * as follows (slightly re-ordered): + * + * : <-- syscall with 4 parameters + * callq <__fentry__> + * + * mov 0x70(%rdi),%rdi <-- decode regs->di + * mov 0x68(%rdi),%rsi <-- decode regs->si + * mov 0x60(%rdi),%rdx <-- decode regs->dx + * mov 0x38(%rdi),%rcx <-- decode regs->r10 + * + * xor %r9d,%r9d <-- clear %r9 + * xor %r8d,%r8d <-- clear %r8 + * + * callq __sys_recvfrom <-- do the actual work in __sys_recvfrom() + * which takes 6 arguments + * + * cltq <-- extend return value to 64-bit + * retq <-- return + * + * This approach avoids leaking random user-provided register content down + * the call chain. + * + * As the generic SYSCALL_DEFINE0() macro does not decode any parameters for + * obvious reasons, and passing struct pt_regs *regs to it in %rdi does not + * hurt, there is no need to override it. + */ +#define __SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long sys##name(const struct pt_regs *regs); \ + ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ + static long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ + static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ + asmlinkage long sys##name(const struct pt_regs *regs) \ + { \ + return SyS##name(__MAP(x,__SC_ARGS \ + ,,regs->di,,regs->si,,regs->dx \ + ,,regs->r10,,regs->r8,,regs->r9)); \ + } \ + static long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ + { \ + long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ + __MAP(x,__SC_TEST,__VA_ARGS__); \ + __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ + return ret; \ + } \ + static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) + +/* + * For VSYSCALLS, we need to declare these three syscalls with the new + * pt_regs-based calling convention for in-kernel use. + */ +struct pt_regs; +asmlinkage long sys_getcpu(const struct pt_regs *regs); /* di,si,dx */ +asmlinkage long sys_gettimeofday(const struct pt_regs *regs); /* di,si */ +asmlinkage long sys_time(const struct pt_regs *regs); /* di */ + +#endif /* _ASM_X86_SYSCALL_WRAPPER_H */ diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index ae6e05fdc24b..e4ad93c05f02 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -18,6 +18,12 @@ /* Common in X86_32 and X86_64 */ /* kernel/ioport.c */ long ksys_ioperm(unsigned long from, unsigned long num, int turn_on); + +#ifndef CONFIG_SYSCALL_PTREGS +/* + * If CONFIG_SYSCALL_PTREGS is enabled, a different syscall calling convention + * is used. Do not include these -- invalid -- prototypes then + */ asmlinkage long sys_ioperm(unsigned long, unsigned long, int); asmlinkage long sys_iopl(unsigned int); @@ -53,4 +59,5 @@ asmlinkage long sys_mmap(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); #endif /* CONFIG_X86_32 */ +#endif /* CONFIG_SYSCALL_PTREGS */ #endif /* _ASM_X86_SYSCALLS_H */ diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 503ab245d4ce..d7168b3a4b4c 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -102,7 +102,7 @@ union bpf_attr; * for SYSCALL_DEFINE/COMPAT_SYSCALL_DEFINE */ #define __MAP0(m,...) -#define __MAP1(m,t,a) m(t,a) +#define __MAP1(m,t,a,...) m(t,a) #define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__) #define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__) #define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__) -- cgit v1.2.3-59-g8ed1b From 7303e30ec1d8fb5ca1f07c92d069241c32b2ee1b Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 5 Apr 2018 11:53:03 +0200 Subject: syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls It may be useful for an architecture to override the definitions of the COMPAT_SYSCALL_DEFINE0() and __COMPAT_SYSCALL_DEFINEx() macros in , in particular to use a different calling convention for syscalls. This patch provides a mechanism to do so, based on the previously introduced CONFIG_ARCH_HAS_SYSCALL_WRAPPER. If it is enabled, is included in and may be used to define the macros mentioned above. Moreover, as the syscall calling convention may be different if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is set, the compat syscall function prototypes in are #ifndef'd out in that case. As some of the syscalls and/or compat syscalls may not be present, the COND_SYSCALL() and COND_SYSCALL_COMPAT() macros in kernel/sys_ni.c as well as the SYS_NI() and COMPAT_SYS_NI() macros in kernel/time/posix-stubs.c can be re-defined in iff CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. Signed-off-by: Dominik Brodowski Acked-by: Linus Torvalds Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180405095307.3730-5-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- include/linux/compat.h | 22 ++++++++++++++++++++++ init/Kconfig | 9 ++++++--- kernel/sys_ni.c | 10 ++++++++++ kernel/time/posix-stubs.c | 10 ++++++++++ 4 files changed, 48 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/compat.h b/include/linux/compat.h index 9847c5a013c3..2d85ec5cfda2 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -24,6 +24,17 @@ #include #include +#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER +/* + * It may be useful for an architecture to override the definitions of the + * COMPAT_SYSCALL_DEFINE0 and COMPAT_SYSCALL_DEFINEx() macros, in particular + * to use a different calling convention for syscalls. To allow for that, + + the prototypes for the compat_sys_*() functions below will *not* be included + * if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. + */ +#include +#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ + #ifndef COMPAT_USE_64BIT_TIME #define COMPAT_USE_64BIT_TIME 0 #endif @@ -32,10 +43,12 @@ #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) #endif +#ifndef COMPAT_SYSCALL_DEFINE0 #define COMPAT_SYSCALL_DEFINE0(name) \ asmlinkage long compat_sys_##name(void); \ ALLOW_ERROR_INJECTION(compat_sys_##name, ERRNO); \ asmlinkage long compat_sys_##name(void) +#endif /* COMPAT_SYSCALL_DEFINE0 */ #define COMPAT_SYSCALL_DEFINE1(name, ...) \ COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) @@ -50,6 +63,7 @@ #define COMPAT_SYSCALL_DEFINE6(name, ...) \ COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) +#ifndef COMPAT_SYSCALL_DEFINEx #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\ @@ -62,6 +76,7 @@ return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ } \ static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) +#endif /* COMPAT_SYSCALL_DEFINEx */ #ifndef compat_user_stack_pointer #define compat_user_stack_pointer() current_user_stack_pointer() @@ -517,7 +532,12 @@ int __compat_save_altstack(compat_stack_t __user *, unsigned long); * Please note that these prototypes here are only provided for information * purposes, for static analysis, and for linking from the syscall table. * These functions should not be called elsewhere from kernel code. + * + * As the syscall calling convention may be different from the default + * for architectures overriding the syscall calling convention, do not + * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. */ +#ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, u32 __user *iocb); @@ -955,6 +975,8 @@ asmlinkage long compat_sys_stime(compat_time_t __user *tptr); /* obsolete: net/socket.c */ asmlinkage long compat_sys_socketcall(int call, u32 __user *args); +#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ + /* * For most but not all architectures, "am I in a compat syscall?" and diff --git a/init/Kconfig b/init/Kconfig index 068eb6c3bbf7..2dbc88051bde 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1925,8 +1925,11 @@ config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE bool # It may be useful for an architecture to override the definitions of the -# SYSCALL_DEFINE() and __SYSCALL_DEFINEx() macros in , -# in particular to use a different calling convention for syscalls. +# SYSCALL_DEFINE() and __SYSCALL_DEFINEx() macros in +# and the COMPAT_ variants in , in particular to use a +# different calling convention for syscalls. They can also override the +# macros for not-implemented syscalls in kernel/sys_ni.c and +# kernel/time/posix-stubs.c. All these overrides need to be available in +# . config ARCH_HAS_SYSCALL_WRAPPER def_bool n - depends on !COMPAT diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 6cafc008f6db..9791364925dc 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -5,6 +5,11 @@ #include +#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER +/* Architectures may override COND_SYSCALL and COND_SYSCALL_COMPAT */ +#include +#endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ + /* we can't #include here, but tell gcc to not warn with -Wmissing-prototypes */ asmlinkage long sys_ni_syscall(void); @@ -17,8 +22,13 @@ asmlinkage long sys_ni_syscall(void) return -ENOSYS; } +#ifndef COND_SYSCALL #define COND_SYSCALL(name) cond_syscall(sys_##name) +#endif /* COND_SYSCALL */ + +#ifndef COND_SYSCALL_COMPAT #define COND_SYSCALL_COMPAT(name) cond_syscall(compat_sys_##name) +#endif /* COND_SYSCALL_COMPAT */ /* * This list is kept in the same order as include/uapi/asm-generic/unistd.h. diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c index b258bee13b02..69a937c3cd81 100644 --- a/kernel/time/posix-stubs.c +++ b/kernel/time/posix-stubs.c @@ -19,6 +19,11 @@ #include #include +#ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER +/* Architectures may override SYS_NI and COMPAT_SYS_NI */ +#include +#endif + asmlinkage long sys_ni_posix_timers(void) { pr_err_once("process %d (%s) attempted a POSIX timer syscall " @@ -27,8 +32,13 @@ asmlinkage long sys_ni_posix_timers(void) return -ENOSYS; } +#ifndef SYS_NI #define SYS_NI(name) SYSCALL_ALIAS(sys_##name, sys_ni_posix_timers) +#endif + +#ifndef COMPAT_SYS_NI #define COMPAT_SYS_NI(name) SYSCALL_ALIAS(compat_sys_##name, sys_ni_posix_timers) +#endif SYS_NI(timer_create); SYS_NI(timer_gettime); -- cgit v1.2.3-59-g8ed1b From e145242ea0df6b7d28fd7186e61d6840fa4bb06e Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 9 Apr 2018 12:51:42 +0200 Subject: syscalls/core, syscalls/x86: Clean up syscall stub naming convention Tidy the naming convention for compat syscall subs. Hints which describe the purpose of the stub go in front and receive a double underscore to denote that they are generated on-the-fly by the SYSCALL_DEFINEx() macro. For the generic case, this means (0xffffffff prefix removed): 810f08d0 t kernel_waitid # common C function (see kernel/exit.c) __do_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) 810f1aa0 T __se_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long; # casts them to the declared type) 810f1aa0 T sys_waitid # alias to __se_sys_waitid() (taking # parameters as declared), to be included # in syscall table For x86, the naming is as follows: 810efc70 t kernel_waitid # common C function (see kernel/exit.c) __do_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) 810efd60 t __se_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long; # casts them to the declared type) 810f1140 T __ia32_sys_waitid # IA32_EMULATION 32-bit-ptregs -> C stub, # calls __se_sys_waitid(); to be included # in syscall table 810f1110 T sys_waitid # x86 64-bit-ptregs -> C stub, calls # __se_sys_waitid(); to be included in # syscall table For x86, sys_waitid() will be re-named to __x64_sys_waitid in a follow-up patch. Suggested-by: Ingo Molnar Signed-off-by: Dominik Brodowski Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180409105145.5364-2-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- arch/x86/entry/syscalls/syscall_32.tbl | 424 ++++++++++++++++----------------- arch/x86/include/asm/syscall_wrapper.h | 35 +-- include/linux/syscalls.h | 17 +- scripts/bloat-o-meter | 2 +- 4 files changed, 242 insertions(+), 236 deletions(-) (limited to 'include') diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 7f09a3da0b3d..539df8f6d0e1 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -4,7 +4,7 @@ # The format is: # # -# The __sys_ia32 and __compat_sys_ia32 stubs are created on-the-fly for +# The __ia32_sys and __compat_sys_ia32 stubs are created on-the-fly for # sys_*() system calls and compat_sys_*() compat system calls if # IA32_EMULATION is defined, and expect struct pt_regs *regs as their only # parameter. @@ -12,284 +12,284 @@ # The abi is always "i386" for this file. # 0 i386 restart_syscall sys_restart_syscall -1 i386 exit sys_exit __sys_ia32_exit +1 i386 exit sys_exit __ia32_sys_exit 2 i386 fork sys_fork -3 i386 read sys_read __sys_ia32_read -4 i386 write sys_write __sys_ia32_write +3 i386 read sys_read __ia32_sys_read +4 i386 write sys_write __ia32_sys_write 5 i386 open sys_open __compat_sys_ia32_open -6 i386 close sys_close __sys_ia32_close -7 i386 waitpid sys_waitpid __sys_ia32_waitpid -8 i386 creat sys_creat __sys_ia32_creat -9 i386 link sys_link __sys_ia32_link -10 i386 unlink sys_unlink __sys_ia32_unlink +6 i386 close sys_close __ia32_sys_close +7 i386 waitpid sys_waitpid __ia32_sys_waitpid +8 i386 creat sys_creat __ia32_sys_creat +9 i386 link sys_link __ia32_sys_link +10 i386 unlink sys_unlink __ia32_sys_unlink 11 i386 execve sys_execve __compat_sys_ia32_execve -12 i386 chdir sys_chdir __sys_ia32_chdir +12 i386 chdir sys_chdir __ia32_sys_chdir 13 i386 time sys_time __compat_sys_ia32_time -14 i386 mknod sys_mknod __sys_ia32_mknod -15 i386 chmod sys_chmod __sys_ia32_chmod -16 i386 lchown sys_lchown16 __sys_ia32_lchown16 +14 i386 mknod sys_mknod __ia32_sys_mknod +15 i386 chmod sys_chmod __ia32_sys_chmod +16 i386 lchown sys_lchown16 __ia32_sys_lchown16 17 i386 break -18 i386 oldstat sys_stat __sys_ia32_stat +18 i386 oldstat sys_stat __ia32_sys_stat 19 i386 lseek sys_lseek __compat_sys_ia32_lseek 20 i386 getpid sys_getpid 21 i386 mount sys_mount __compat_sys_ia32_mount -22 i386 umount sys_oldumount __sys_ia32_oldumount -23 i386 setuid sys_setuid16 __sys_ia32_setuid16 +22 i386 umount sys_oldumount __ia32_sys_oldumount +23 i386 setuid sys_setuid16 __ia32_sys_setuid16 24 i386 getuid sys_getuid16 25 i386 stime sys_stime __compat_sys_ia32_stime 26 i386 ptrace sys_ptrace __compat_sys_ia32_ptrace -27 i386 alarm sys_alarm __sys_ia32_alarm -28 i386 oldfstat sys_fstat __sys_ia32_fstat +27 i386 alarm sys_alarm __ia32_sys_alarm +28 i386 oldfstat sys_fstat __ia32_sys_fstat 29 i386 pause sys_pause 30 i386 utime sys_utime __compat_sys_ia32_utime 31 i386 stty 32 i386 gtty -33 i386 access sys_access __sys_ia32_access -34 i386 nice sys_nice __sys_ia32_nice +33 i386 access sys_access __ia32_sys_access +34 i386 nice sys_nice __ia32_sys_nice 35 i386 ftime 36 i386 sync sys_sync -37 i386 kill sys_kill __sys_ia32_kill -38 i386 rename sys_rename __sys_ia32_rename -39 i386 mkdir sys_mkdir __sys_ia32_mkdir -40 i386 rmdir sys_rmdir __sys_ia32_rmdir -41 i386 dup sys_dup __sys_ia32_dup -42 i386 pipe sys_pipe __sys_ia32_pipe +37 i386 kill sys_kill __ia32_sys_kill +38 i386 rename sys_rename __ia32_sys_rename +39 i386 mkdir sys_mkdir __ia32_sys_mkdir +40 i386 rmdir sys_rmdir __ia32_sys_rmdir +41 i386 dup sys_dup __ia32_sys_dup +42 i386 pipe sys_pipe __ia32_sys_pipe 43 i386 times sys_times __compat_sys_ia32_times 44 i386 prof -45 i386 brk sys_brk __sys_ia32_brk -46 i386 setgid sys_setgid16 __sys_ia32_setgid16 +45 i386 brk sys_brk __ia32_sys_brk +46 i386 setgid sys_setgid16 __ia32_sys_setgid16 47 i386 getgid sys_getgid16 -48 i386 signal sys_signal __sys_ia32_signal +48 i386 signal sys_signal __ia32_sys_signal 49 i386 geteuid sys_geteuid16 50 i386 getegid sys_getegid16 -51 i386 acct sys_acct __sys_ia32_acct -52 i386 umount2 sys_umount __sys_ia32_umount +51 i386 acct sys_acct __ia32_sys_acct +52 i386 umount2 sys_umount __ia32_sys_umount 53 i386 lock 54 i386 ioctl sys_ioctl __compat_sys_ia32_ioctl 55 i386 fcntl sys_fcntl __compat_sys_ia32_fcntl64 56 i386 mpx -57 i386 setpgid sys_setpgid __sys_ia32_setpgid +57 i386 setpgid sys_setpgid __ia32_sys_setpgid 58 i386 ulimit -59 i386 oldolduname sys_olduname __sys_ia32_olduname -60 i386 umask sys_umask __sys_ia32_umask -61 i386 chroot sys_chroot __sys_ia32_chroot +59 i386 oldolduname sys_olduname __ia32_sys_olduname +60 i386 umask sys_umask __ia32_sys_umask +61 i386 chroot sys_chroot __ia32_sys_chroot 62 i386 ustat sys_ustat __compat_sys_ia32_ustat -63 i386 dup2 sys_dup2 __sys_ia32_dup2 +63 i386 dup2 sys_dup2 __ia32_sys_dup2 64 i386 getppid sys_getppid 65 i386 getpgrp sys_getpgrp 66 i386 setsid sys_setsid 67 i386 sigaction sys_sigaction __compat_sys_ia32_sigaction 68 i386 sgetmask sys_sgetmask -69 i386 ssetmask sys_ssetmask __sys_ia32_ssetmask -70 i386 setreuid sys_setreuid16 __sys_ia32_setreuid16 -71 i386 setregid sys_setregid16 __sys_ia32_setregid16 -72 i386 sigsuspend sys_sigsuspend __sys_ia32_sigsuspend +69 i386 ssetmask sys_ssetmask __ia32_sys_ssetmask +70 i386 setreuid sys_setreuid16 __ia32_sys_setreuid16 +71 i386 setregid sys_setregid16 __ia32_sys_setregid16 +72 i386 sigsuspend sys_sigsuspend __ia32_sys_sigsuspend 73 i386 sigpending sys_sigpending __compat_sys_ia32_sigpending -74 i386 sethostname sys_sethostname __sys_ia32_sethostname +74 i386 sethostname sys_sethostname __ia32_sys_sethostname 75 i386 setrlimit sys_setrlimit __compat_sys_ia32_setrlimit 76 i386 getrlimit sys_old_getrlimit __compat_sys_ia32_old_getrlimit 77 i386 getrusage sys_getrusage __compat_sys_ia32_getrusage 78 i386 gettimeofday sys_gettimeofday __compat_sys_ia32_gettimeofday 79 i386 settimeofday sys_settimeofday __compat_sys_ia32_settimeofday -80 i386 getgroups sys_getgroups16 __sys_ia32_getgroups16 -81 i386 setgroups sys_setgroups16 __sys_ia32_setgroups16 +80 i386 getgroups sys_getgroups16 __ia32_sys_getgroups16 +81 i386 setgroups sys_setgroups16 __ia32_sys_setgroups16 82 i386 select sys_old_select __compat_sys_ia32_old_select -83 i386 symlink sys_symlink __sys_ia32_symlink -84 i386 oldlstat sys_lstat __sys_ia32_lstat -85 i386 readlink sys_readlink __sys_ia32_readlink -86 i386 uselib sys_uselib __sys_ia32_uselib -87 i386 swapon sys_swapon __sys_ia32_swapon -88 i386 reboot sys_reboot __sys_ia32_reboot +83 i386 symlink sys_symlink __ia32_sys_symlink +84 i386 oldlstat sys_lstat __ia32_sys_lstat +85 i386 readlink sys_readlink __ia32_sys_readlink +86 i386 uselib sys_uselib __ia32_sys_uselib +87 i386 swapon sys_swapon __ia32_sys_swapon +88 i386 reboot sys_reboot __ia32_sys_reboot 89 i386 readdir sys_old_readdir __compat_sys_ia32_old_readdir 90 i386 mmap sys_old_mmap __compat_sys_ia32_x86_mmap -91 i386 munmap sys_munmap __sys_ia32_munmap +91 i386 munmap sys_munmap __ia32_sys_munmap 92 i386 truncate sys_truncate __compat_sys_ia32_truncate 93 i386 ftruncate sys_ftruncate __compat_sys_ia32_ftruncate -94 i386 fchmod sys_fchmod __sys_ia32_fchmod -95 i386 fchown sys_fchown16 __sys_ia32_fchown16 -96 i386 getpriority sys_getpriority __sys_ia32_getpriority -97 i386 setpriority sys_setpriority __sys_ia32_setpriority +94 i386 fchmod sys_fchmod __ia32_sys_fchmod +95 i386 fchown sys_fchown16 __ia32_sys_fchown16 +96 i386 getpriority sys_getpriority __ia32_sys_getpriority +97 i386 setpriority sys_setpriority __ia32_sys_setpriority 98 i386 profil 99 i386 statfs sys_statfs __compat_sys_ia32_statfs 100 i386 fstatfs sys_fstatfs __compat_sys_ia32_fstatfs -101 i386 ioperm sys_ioperm __sys_ia32_ioperm +101 i386 ioperm sys_ioperm __ia32_sys_ioperm 102 i386 socketcall sys_socketcall __compat_sys_ia32_socketcall -103 i386 syslog sys_syslog __sys_ia32_syslog +103 i386 syslog sys_syslog __ia32_sys_syslog 104 i386 setitimer sys_setitimer __compat_sys_ia32_setitimer 105 i386 getitimer sys_getitimer __compat_sys_ia32_getitimer 106 i386 stat sys_newstat __compat_sys_ia32_newstat 107 i386 lstat sys_newlstat __compat_sys_ia32_newlstat 108 i386 fstat sys_newfstat __compat_sys_ia32_newfstat -109 i386 olduname sys_uname __sys_ia32_uname -110 i386 iopl sys_iopl __sys_ia32_iopl +109 i386 olduname sys_uname __ia32_sys_uname +110 i386 iopl sys_iopl __ia32_sys_iopl 111 i386 vhangup sys_vhangup 112 i386 idle 113 i386 vm86old sys_vm86old sys_ni_syscall 114 i386 wait4 sys_wait4 __compat_sys_ia32_wait4 -115 i386 swapoff sys_swapoff __sys_ia32_swapoff +115 i386 swapoff sys_swapoff __ia32_sys_swapoff 116 i386 sysinfo sys_sysinfo __compat_sys_ia32_sysinfo 117 i386 ipc sys_ipc __compat_sys_ia32_ipc -118 i386 fsync sys_fsync __sys_ia32_fsync +118 i386 fsync sys_fsync __ia32_sys_fsync 119 i386 sigreturn sys_sigreturn sys32_sigreturn 120 i386 clone sys_clone __compat_sys_ia32_x86_clone -121 i386 setdomainname sys_setdomainname __sys_ia32_setdomainname -122 i386 uname sys_newuname __sys_ia32_newuname -123 i386 modify_ldt sys_modify_ldt __sys_ia32_modify_ldt +121 i386 setdomainname sys_setdomainname __ia32_sys_setdomainname +122 i386 uname sys_newuname __ia32_sys_newuname +123 i386 modify_ldt sys_modify_ldt __ia32_sys_modify_ldt 124 i386 adjtimex sys_adjtimex __compat_sys_ia32_adjtimex -125 i386 mprotect sys_mprotect __sys_ia32_mprotect +125 i386 mprotect sys_mprotect __ia32_sys_mprotect 126 i386 sigprocmask sys_sigprocmask __compat_sys_ia32_sigprocmask 127 i386 create_module -128 i386 init_module sys_init_module __sys_ia32_init_module -129 i386 delete_module sys_delete_module __sys_ia32_delete_module +128 i386 init_module sys_init_module __ia32_sys_init_module +129 i386 delete_module sys_delete_module __ia32_sys_delete_module 130 i386 get_kernel_syms 131 i386 quotactl sys_quotactl __compat_sys_ia32_quotactl32 -132 i386 getpgid sys_getpgid __sys_ia32_getpgid -133 i386 fchdir sys_fchdir __sys_ia32_fchdir -134 i386 bdflush sys_bdflush __sys_ia32_bdflush -135 i386 sysfs sys_sysfs __sys_ia32_sysfs -136 i386 personality sys_personality __sys_ia32_personality +132 i386 getpgid sys_getpgid __ia32_sys_getpgid +133 i386 fchdir sys_fchdir __ia32_sys_fchdir +134 i386 bdflush sys_bdflush __ia32_sys_bdflush +135 i386 sysfs sys_sysfs __ia32_sys_sysfs +136 i386 personality sys_personality __ia32_sys_personality 137 i386 afs_syscall -138 i386 setfsuid sys_setfsuid16 __sys_ia32_setfsuid16 -139 i386 setfsgid sys_setfsgid16 __sys_ia32_setfsgid16 -140 i386 _llseek sys_llseek __sys_ia32_llseek +138 i386 setfsuid sys_setfsuid16 __ia32_sys_setfsuid16 +139 i386 setfsgid sys_setfsgid16 __ia32_sys_setfsgid16 +140 i386 _llseek sys_llseek __ia32_sys_llseek 141 i386 getdents sys_getdents __compat_sys_ia32_getdents 142 i386 _newselect sys_select __compat_sys_ia32_select -143 i386 flock sys_flock __sys_ia32_flock -144 i386 msync sys_msync __sys_ia32_msync +143 i386 flock sys_flock __ia32_sys_flock +144 i386 msync sys_msync __ia32_sys_msync 145 i386 readv sys_readv __compat_sys_ia32_readv 146 i386 writev sys_writev __compat_sys_ia32_writev -147 i386 getsid sys_getsid __sys_ia32_getsid -148 i386 fdatasync sys_fdatasync __sys_ia32_fdatasync +147 i386 getsid sys_getsid __ia32_sys_getsid +148 i386 fdatasync sys_fdatasync __ia32_sys_fdatasync 149 i386 _sysctl sys_sysctl __compat_sys_ia32_sysctl -150 i386 mlock sys_mlock __sys_ia32_mlock -151 i386 munlock sys_munlock __sys_ia32_munlock -152 i386 mlockall sys_mlockall __sys_ia32_mlockall +150 i386 mlock sys_mlock __ia32_sys_mlock +151 i386 munlock sys_munlock __ia32_sys_munlock +152 i386 mlockall sys_mlockall __ia32_sys_mlockall 153 i386 munlockall sys_munlockall -154 i386 sched_setparam sys_sched_setparam __sys_ia32_sched_setparam -155 i386 sched_getparam sys_sched_getparam __sys_ia32_sched_getparam -156 i386 sched_setscheduler sys_sched_setscheduler __sys_ia32_sched_setscheduler -157 i386 sched_getscheduler sys_sched_getscheduler __sys_ia32_sched_getscheduler +154 i386 sched_setparam sys_sched_setparam __ia32_sys_sched_setparam +155 i386 sched_getparam sys_sched_getparam __ia32_sys_sched_getparam +156 i386 sched_setscheduler sys_sched_setscheduler __ia32_sys_sched_setscheduler +157 i386 sched_getscheduler sys_sched_getscheduler __ia32_sys_sched_getscheduler 158 i386 sched_yield sys_sched_yield -159 i386 sched_get_priority_max sys_sched_get_priority_max __sys_ia32_sched_get_priority_max -160 i386 sched_get_priority_min sys_sched_get_priority_min __sys_ia32_sched_get_priority_min +159 i386 sched_get_priority_max sys_sched_get_priority_max __ia32_sys_sched_get_priority_max +160 i386 sched_get_priority_min sys_sched_get_priority_min __ia32_sys_sched_get_priority_min 161 i386 sched_rr_get_interval sys_sched_rr_get_interval __compat_sys_ia32_sched_rr_get_interval 162 i386 nanosleep sys_nanosleep __compat_sys_ia32_nanosleep -163 i386 mremap sys_mremap __sys_ia32_mremap -164 i386 setresuid sys_setresuid16 __sys_ia32_setresuid16 -165 i386 getresuid sys_getresuid16 __sys_ia32_getresuid16 +163 i386 mremap sys_mremap __ia32_sys_mremap +164 i386 setresuid sys_setresuid16 __ia32_sys_setresuid16 +165 i386 getresuid sys_getresuid16 __ia32_sys_getresuid16 166 i386 vm86 sys_vm86 sys_ni_syscall 167 i386 query_module -168 i386 poll sys_poll __sys_ia32_poll +168 i386 poll sys_poll __ia32_sys_poll 169 i386 nfsservctl -170 i386 setresgid sys_setresgid16 __sys_ia32_setresgid16 -171 i386 getresgid sys_getresgid16 __sys_ia32_getresgid16 -172 i386 prctl sys_prctl __sys_ia32_prctl +170 i386 setresgid sys_setresgid16 __ia32_sys_setresgid16 +171 i386 getresgid sys_getresgid16 __ia32_sys_getresgid16 +172 i386 prctl sys_prctl __ia32_sys_prctl 173 i386 rt_sigreturn sys_rt_sigreturn sys32_rt_sigreturn 174 i386 rt_sigaction sys_rt_sigaction __compat_sys_ia32_rt_sigaction -175 i386 rt_sigprocmask sys_rt_sigprocmask __sys_ia32_rt_sigprocmask +175 i386 rt_sigprocmask sys_rt_sigprocmask __ia32_sys_rt_sigprocmask 176 i386 rt_sigpending sys_rt_sigpending __compat_sys_ia32_rt_sigpending 177 i386 rt_sigtimedwait sys_rt_sigtimedwait __compat_sys_ia32_rt_sigtimedwait 178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo __compat_sys_ia32_rt_sigqueueinfo -179 i386 rt_sigsuspend sys_rt_sigsuspend __sys_ia32_rt_sigsuspend +179 i386 rt_sigsuspend sys_rt_sigsuspend __ia32_sys_rt_sigsuspend 180 i386 pread64 sys_pread64 __compat_sys_ia32_x86_pread 181 i386 pwrite64 sys_pwrite64 __compat_sys_ia32_x86_pwrite -182 i386 chown sys_chown16 __sys_ia32_chown16 -183 i386 getcwd sys_getcwd __sys_ia32_getcwd -184 i386 capget sys_capget __sys_ia32_capget -185 i386 capset sys_capset __sys_ia32_capset +182 i386 chown sys_chown16 __ia32_sys_chown16 +183 i386 getcwd sys_getcwd __ia32_sys_getcwd +184 i386 capget sys_capget __ia32_sys_capget +185 i386 capset sys_capset __ia32_sys_capset 186 i386 sigaltstack sys_sigaltstack __compat_sys_ia32_sigaltstack 187 i386 sendfile sys_sendfile __compat_sys_ia32_sendfile 188 i386 getpmsg 189 i386 putpmsg 190 i386 vfork sys_vfork 191 i386 ugetrlimit sys_getrlimit __compat_sys_ia32_getrlimit -192 i386 mmap2 sys_mmap_pgoff __sys_ia32_mmap_pgoff +192 i386 mmap2 sys_mmap_pgoff __ia32_sys_mmap_pgoff 193 i386 truncate64 sys_truncate64 __compat_sys_ia32_x86_truncate64 194 i386 ftruncate64 sys_ftruncate64 __compat_sys_ia32_x86_ftruncate64 195 i386 stat64 sys_stat64 __compat_sys_ia32_x86_stat64 196 i386 lstat64 sys_lstat64 __compat_sys_ia32_x86_lstat64 197 i386 fstat64 sys_fstat64 __compat_sys_ia32_x86_fstat64 -198 i386 lchown32 sys_lchown __sys_ia32_lchown +198 i386 lchown32 sys_lchown __ia32_sys_lchown 199 i386 getuid32 sys_getuid 200 i386 getgid32 sys_getgid 201 i386 geteuid32 sys_geteuid 202 i386 getegid32 sys_getegid -203 i386 setreuid32 sys_setreuid __sys_ia32_setreuid -204 i386 setregid32 sys_setregid __sys_ia32_setregid -205 i386 getgroups32 sys_getgroups __sys_ia32_getgroups -206 i386 setgroups32 sys_setgroups __sys_ia32_setgroups -207 i386 fchown32 sys_fchown __sys_ia32_fchown -208 i386 setresuid32 sys_setresuid __sys_ia32_setresuid -209 i386 getresuid32 sys_getresuid __sys_ia32_getresuid -210 i386 setresgid32 sys_setresgid __sys_ia32_setresgid -211 i386 getresgid32 sys_getresgid __sys_ia32_getresgid -212 i386 chown32 sys_chown __sys_ia32_chown -213 i386 setuid32 sys_setuid __sys_ia32_setuid -214 i386 setgid32 sys_setgid __sys_ia32_setgid -215 i386 setfsuid32 sys_setfsuid __sys_ia32_setfsuid -216 i386 setfsgid32 sys_setfsgid __sys_ia32_setfsgid -217 i386 pivot_root sys_pivot_root __sys_ia32_pivot_root -218 i386 mincore sys_mincore __sys_ia32_mincore -219 i386 madvise sys_madvise __sys_ia32_madvise -220 i386 getdents64 sys_getdents64 __sys_ia32_getdents64 +203 i386 setreuid32 sys_setreuid __ia32_sys_setreuid +204 i386 setregid32 sys_setregid __ia32_sys_setregid +205 i386 getgroups32 sys_getgroups __ia32_sys_getgroups +206 i386 setgroups32 sys_setgroups __ia32_sys_setgroups +207 i386 fchown32 sys_fchown __ia32_sys_fchown +208 i386 setresuid32 sys_setresuid __ia32_sys_setresuid +209 i386 getresuid32 sys_getresuid __ia32_sys_getresuid +210 i386 setresgid32 sys_setresgid __ia32_sys_setresgid +211 i386 getresgid32 sys_getresgid __ia32_sys_getresgid +212 i386 chown32 sys_chown __ia32_sys_chown +213 i386 setuid32 sys_setuid __ia32_sys_setuid +214 i386 setgid32 sys_setgid __ia32_sys_setgid +215 i386 setfsuid32 sys_setfsuid __ia32_sys_setfsuid +216 i386 setfsgid32 sys_setfsgid __ia32_sys_setfsgid +217 i386 pivot_root sys_pivot_root __ia32_sys_pivot_root +218 i386 mincore sys_mincore __ia32_sys_mincore +219 i386 madvise sys_madvise __ia32_sys_madvise +220 i386 getdents64 sys_getdents64 __ia32_sys_getdents64 221 i386 fcntl64 sys_fcntl64 __compat_sys_ia32_fcntl64 # 222 is unused # 223 is unused 224 i386 gettid sys_gettid 225 i386 readahead sys_readahead __compat_sys_ia32_x86_readahead -226 i386 setxattr sys_setxattr __sys_ia32_setxattr -227 i386 lsetxattr sys_lsetxattr __sys_ia32_lsetxattr -228 i386 fsetxattr sys_fsetxattr __sys_ia32_fsetxattr -229 i386 getxattr sys_getxattr __sys_ia32_getxattr -230 i386 lgetxattr sys_lgetxattr __sys_ia32_lgetxattr -231 i386 fgetxattr sys_fgetxattr __sys_ia32_fgetxattr -232 i386 listxattr sys_listxattr __sys_ia32_listxattr -233 i386 llistxattr sys_llistxattr __sys_ia32_llistxattr -234 i386 flistxattr sys_flistxattr __sys_ia32_flistxattr -235 i386 removexattr sys_removexattr __sys_ia32_removexattr -236 i386 lremovexattr sys_lremovexattr __sys_ia32_lremovexattr -237 i386 fremovexattr sys_fremovexattr __sys_ia32_fremovexattr -238 i386 tkill sys_tkill __sys_ia32_tkill -239 i386 sendfile64 sys_sendfile64 __sys_ia32_sendfile64 +226 i386 setxattr sys_setxattr __ia32_sys_setxattr +227 i386 lsetxattr sys_lsetxattr __ia32_sys_lsetxattr +228 i386 fsetxattr sys_fsetxattr __ia32_sys_fsetxattr +229 i386 getxattr sys_getxattr __ia32_sys_getxattr +230 i386 lgetxattr sys_lgetxattr __ia32_sys_lgetxattr +231 i386 fgetxattr sys_fgetxattr __ia32_sys_fgetxattr +232 i386 listxattr sys_listxattr __ia32_sys_listxattr +233 i386 llistxattr sys_llistxattr __ia32_sys_llistxattr +234 i386 flistxattr sys_flistxattr __ia32_sys_flistxattr +235 i386 removexattr sys_removexattr __ia32_sys_removexattr +236 i386 lremovexattr sys_lremovexattr __ia32_sys_lremovexattr +237 i386 fremovexattr sys_fremovexattr __ia32_sys_fremovexattr +238 i386 tkill sys_tkill __ia32_sys_tkill +239 i386 sendfile64 sys_sendfile64 __ia32_sys_sendfile64 240 i386 futex sys_futex __compat_sys_ia32_futex 241 i386 sched_setaffinity sys_sched_setaffinity __compat_sys_ia32_sched_setaffinity 242 i386 sched_getaffinity sys_sched_getaffinity __compat_sys_ia32_sched_getaffinity -243 i386 set_thread_area sys_set_thread_area __sys_ia32_set_thread_area -244 i386 get_thread_area sys_get_thread_area __sys_ia32_get_thread_area +243 i386 set_thread_area sys_set_thread_area __ia32_sys_set_thread_area +244 i386 get_thread_area sys_get_thread_area __ia32_sys_get_thread_area 245 i386 io_setup sys_io_setup __compat_sys_ia32_io_setup -246 i386 io_destroy sys_io_destroy __sys_ia32_io_destroy +246 i386 io_destroy sys_io_destroy __ia32_sys_io_destroy 247 i386 io_getevents sys_io_getevents __compat_sys_ia32_io_getevents 248 i386 io_submit sys_io_submit __compat_sys_ia32_io_submit -249 i386 io_cancel sys_io_cancel __sys_ia32_io_cancel +249 i386 io_cancel sys_io_cancel __ia32_sys_io_cancel 250 i386 fadvise64 sys_fadvise64 __compat_sys_ia32_x86_fadvise64 # 251 is available for reuse (was briefly sys_set_zone_reclaim) -252 i386 exit_group sys_exit_group __sys_ia32_exit_group +252 i386 exit_group sys_exit_group __ia32_sys_exit_group 253 i386 lookup_dcookie sys_lookup_dcookie __compat_sys_ia32_lookup_dcookie -254 i386 epoll_create sys_epoll_create __sys_ia32_epoll_create -255 i386 epoll_ctl sys_epoll_ctl __sys_ia32_epoll_ctl -256 i386 epoll_wait sys_epoll_wait __sys_ia32_epoll_wait -257 i386 remap_file_pages sys_remap_file_pages __sys_ia32_remap_file_pages -258 i386 set_tid_address sys_set_tid_address __sys_ia32_set_tid_address +254 i386 epoll_create sys_epoll_create __ia32_sys_epoll_create +255 i386 epoll_ctl sys_epoll_ctl __ia32_sys_epoll_ctl +256 i386 epoll_wait sys_epoll_wait __ia32_sys_epoll_wait +257 i386 remap_file_pages sys_remap_file_pages __ia32_sys_remap_file_pages +258 i386 set_tid_address sys_set_tid_address __ia32_sys_set_tid_address 259 i386 timer_create sys_timer_create __compat_sys_ia32_timer_create 260 i386 timer_settime sys_timer_settime __compat_sys_ia32_timer_settime 261 i386 timer_gettime sys_timer_gettime __compat_sys_ia32_timer_gettime -262 i386 timer_getoverrun sys_timer_getoverrun __sys_ia32_timer_getoverrun -263 i386 timer_delete sys_timer_delete __sys_ia32_timer_delete +262 i386 timer_getoverrun sys_timer_getoverrun __ia32_sys_timer_getoverrun +263 i386 timer_delete sys_timer_delete __ia32_sys_timer_delete 264 i386 clock_settime sys_clock_settime __compat_sys_ia32_clock_settime 265 i386 clock_gettime sys_clock_gettime __compat_sys_ia32_clock_gettime 266 i386 clock_getres sys_clock_getres __compat_sys_ia32_clock_getres 267 i386 clock_nanosleep sys_clock_nanosleep __compat_sys_ia32_clock_nanosleep 268 i386 statfs64 sys_statfs64 __compat_sys_ia32_statfs64 269 i386 fstatfs64 sys_fstatfs64 __compat_sys_ia32_fstatfs64 -270 i386 tgkill sys_tgkill __sys_ia32_tgkill +270 i386 tgkill sys_tgkill __ia32_sys_tgkill 271 i386 utimes sys_utimes __compat_sys_ia32_utimes 272 i386 fadvise64_64 sys_fadvise64_64 __compat_sys_ia32_x86_fadvise64_64 273 i386 vserver -274 i386 mbind sys_mbind __sys_ia32_mbind +274 i386 mbind sys_mbind __ia32_sys_mbind 275 i386 get_mempolicy sys_get_mempolicy __compat_sys_ia32_get_mempolicy -276 i386 set_mempolicy sys_set_mempolicy __sys_ia32_set_mempolicy +276 i386 set_mempolicy sys_set_mempolicy __ia32_sys_set_mempolicy 277 i386 mq_open sys_mq_open __compat_sys_ia32_mq_open -278 i386 mq_unlink sys_mq_unlink __sys_ia32_mq_unlink +278 i386 mq_unlink sys_mq_unlink __ia32_sys_mq_unlink 279 i386 mq_timedsend sys_mq_timedsend __compat_sys_ia32_mq_timedsend 280 i386 mq_timedreceive sys_mq_timedreceive __compat_sys_ia32_mq_timedreceive 281 i386 mq_notify sys_mq_notify __compat_sys_ia32_mq_notify @@ -297,102 +297,102 @@ 283 i386 kexec_load sys_kexec_load __compat_sys_ia32_kexec_load 284 i386 waitid sys_waitid __compat_sys_ia32_waitid # 285 sys_setaltroot -286 i386 add_key sys_add_key __sys_ia32_add_key -287 i386 request_key sys_request_key __sys_ia32_request_key +286 i386 add_key sys_add_key __ia32_sys_add_key +287 i386 request_key sys_request_key __ia32_sys_request_key 288 i386 keyctl sys_keyctl __compat_sys_ia32_keyctl -289 i386 ioprio_set sys_ioprio_set __sys_ia32_ioprio_set -290 i386 ioprio_get sys_ioprio_get __sys_ia32_ioprio_get +289 i386 ioprio_set sys_ioprio_set __ia32_sys_ioprio_set +290 i386 ioprio_get sys_ioprio_get __ia32_sys_ioprio_get 291 i386 inotify_init sys_inotify_init -292 i386 inotify_add_watch sys_inotify_add_watch __sys_ia32_inotify_add_watch -293 i386 inotify_rm_watch sys_inotify_rm_watch __sys_ia32_inotify_rm_watch -294 i386 migrate_pages sys_migrate_pages __sys_ia32_migrate_pages +292 i386 inotify_add_watch sys_inotify_add_watch __ia32_sys_inotify_add_watch +293 i386 inotify_rm_watch sys_inotify_rm_watch __ia32_sys_inotify_rm_watch +294 i386 migrate_pages sys_migrate_pages __ia32_sys_migrate_pages 295 i386 openat sys_openat __compat_sys_ia32_openat -296 i386 mkdirat sys_mkdirat __sys_ia32_mkdirat -297 i386 mknodat sys_mknodat __sys_ia32_mknodat -298 i386 fchownat sys_fchownat __sys_ia32_fchownat +296 i386 mkdirat sys_mkdirat __ia32_sys_mkdirat +297 i386 mknodat sys_mknodat __ia32_sys_mknodat +298 i386 fchownat sys_fchownat __ia32_sys_fchownat 299 i386 futimesat sys_futimesat __compat_sys_ia32_futimesat 300 i386 fstatat64 sys_fstatat64 __compat_sys_ia32_x86_fstatat -301 i386 unlinkat sys_unlinkat __sys_ia32_unlinkat -302 i386 renameat sys_renameat __sys_ia32_renameat -303 i386 linkat sys_linkat __sys_ia32_linkat -304 i386 symlinkat sys_symlinkat __sys_ia32_symlinkat -305 i386 readlinkat sys_readlinkat __sys_ia32_readlinkat -306 i386 fchmodat sys_fchmodat __sys_ia32_fchmodat -307 i386 faccessat sys_faccessat __sys_ia32_faccessat +301 i386 unlinkat sys_unlinkat __ia32_sys_unlinkat +302 i386 renameat sys_renameat __ia32_sys_renameat +303 i386 linkat sys_linkat __ia32_sys_linkat +304 i386 symlinkat sys_symlinkat __ia32_sys_symlinkat +305 i386 readlinkat sys_readlinkat __ia32_sys_readlinkat +306 i386 fchmodat sys_fchmodat __ia32_sys_fchmodat +307 i386 faccessat sys_faccessat __ia32_sys_faccessat 308 i386 pselect6 sys_pselect6 __compat_sys_ia32_pselect6 309 i386 ppoll sys_ppoll __compat_sys_ia32_ppoll -310 i386 unshare sys_unshare __sys_ia32_unshare +310 i386 unshare sys_unshare __ia32_sys_unshare 311 i386 set_robust_list sys_set_robust_list __compat_sys_ia32_set_robust_list 312 i386 get_robust_list sys_get_robust_list __compat_sys_ia32_get_robust_list -313 i386 splice sys_splice __sys_ia32_splice +313 i386 splice sys_splice __ia32_sys_splice 314 i386 sync_file_range sys_sync_file_range __compat_sys_ia32_x86_sync_file_range -315 i386 tee sys_tee __sys_ia32_tee +315 i386 tee sys_tee __ia32_sys_tee 316 i386 vmsplice sys_vmsplice __compat_sys_ia32_vmsplice 317 i386 move_pages sys_move_pages __compat_sys_ia32_move_pages -318 i386 getcpu sys_getcpu __sys_ia32_getcpu -319 i386 epoll_pwait sys_epoll_pwait __sys_ia32_epoll_pwait +318 i386 getcpu sys_getcpu __ia32_sys_getcpu +319 i386 epoll_pwait sys_epoll_pwait __ia32_sys_epoll_pwait 320 i386 utimensat sys_utimensat __compat_sys_ia32_utimensat 321 i386 signalfd sys_signalfd __compat_sys_ia32_signalfd -322 i386 timerfd_create sys_timerfd_create __sys_ia32_timerfd_create -323 i386 eventfd sys_eventfd __sys_ia32_eventfd +322 i386 timerfd_create sys_timerfd_create __ia32_sys_timerfd_create +323 i386 eventfd sys_eventfd __ia32_sys_eventfd 324 i386 fallocate sys_fallocate __compat_sys_ia32_x86_fallocate 325 i386 timerfd_settime sys_timerfd_settime __compat_sys_ia32_timerfd_settime 326 i386 timerfd_gettime sys_timerfd_gettime __compat_sys_ia32_timerfd_gettime 327 i386 signalfd4 sys_signalfd4 __compat_sys_ia32_signalfd4 -328 i386 eventfd2 sys_eventfd2 __sys_ia32_eventfd2 -329 i386 epoll_create1 sys_epoll_create1 __sys_ia32_epoll_create1 -330 i386 dup3 sys_dup3 __sys_ia32_dup3 -331 i386 pipe2 sys_pipe2 __sys_ia32_pipe2 -332 i386 inotify_init1 sys_inotify_init1 __sys_ia32_inotify_init1 +328 i386 eventfd2 sys_eventfd2 __ia32_sys_eventfd2 +329 i386 epoll_create1 sys_epoll_create1 __ia32_sys_epoll_create1 +330 i386 dup3 sys_dup3 __ia32_sys_dup3 +331 i386 pipe2 sys_pipe2 __ia32_sys_pipe2 +332 i386 inotify_init1 sys_inotify_init1 __ia32_sys_inotify_init1 333 i386 preadv sys_preadv __compat_sys_ia32_preadv 334 i386 pwritev sys_pwritev __compat_sys_ia32_pwritev 335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo __compat_sys_ia32_rt_tgsigqueueinfo -336 i386 perf_event_open sys_perf_event_open __sys_ia32_perf_event_open +336 i386 perf_event_open sys_perf_event_open __ia32_sys_perf_event_open 337 i386 recvmmsg sys_recvmmsg __compat_sys_ia32_recvmmsg -338 i386 fanotify_init sys_fanotify_init __sys_ia32_fanotify_init +338 i386 fanotify_init sys_fanotify_init __ia32_sys_fanotify_init 339 i386 fanotify_mark sys_fanotify_mark __compat_sys_ia32_fanotify_mark -340 i386 prlimit64 sys_prlimit64 __sys_ia32_prlimit64 -341 i386 name_to_handle_at sys_name_to_handle_at __sys_ia32_name_to_handle_at +340 i386 prlimit64 sys_prlimit64 __ia32_sys_prlimit64 +341 i386 name_to_handle_at sys_name_to_handle_at __ia32_sys_name_to_handle_at 342 i386 open_by_handle_at sys_open_by_handle_at __compat_sys_ia32_open_by_handle_at 343 i386 clock_adjtime sys_clock_adjtime __compat_sys_ia32_clock_adjtime -344 i386 syncfs sys_syncfs __sys_ia32_syncfs +344 i386 syncfs sys_syncfs __ia32_sys_syncfs 345 i386 sendmmsg sys_sendmmsg __compat_sys_ia32_sendmmsg -346 i386 setns sys_setns __sys_ia32_setns +346 i386 setns sys_setns __ia32_sys_setns 347 i386 process_vm_readv sys_process_vm_readv __compat_sys_ia32_process_vm_readv 348 i386 process_vm_writev sys_process_vm_writev __compat_sys_ia32_process_vm_writev -349 i386 kcmp sys_kcmp __sys_ia32_kcmp -350 i386 finit_module sys_finit_module __sys_ia32_finit_module -351 i386 sched_setattr sys_sched_setattr __sys_ia32_sched_setattr -352 i386 sched_getattr sys_sched_getattr __sys_ia32_sched_getattr -353 i386 renameat2 sys_renameat2 __sys_ia32_renameat2 -354 i386 seccomp sys_seccomp __sys_ia32_seccomp -355 i386 getrandom sys_getrandom __sys_ia32_getrandom -356 i386 memfd_create sys_memfd_create __sys_ia32_memfd_create -357 i386 bpf sys_bpf __sys_ia32_bpf +349 i386 kcmp sys_kcmp __ia32_sys_kcmp +350 i386 finit_module sys_finit_module __ia32_sys_finit_module +351 i386 sched_setattr sys_sched_setattr __ia32_sys_sched_setattr +352 i386 sched_getattr sys_sched_getattr __ia32_sys_sched_getattr +353 i386 renameat2 sys_renameat2 __ia32_sys_renameat2 +354 i386 seccomp sys_seccomp __ia32_sys_seccomp +355 i386 getrandom sys_getrandom __ia32_sys_getrandom +356 i386 memfd_create sys_memfd_create __ia32_sys_memfd_create +357 i386 bpf sys_bpf __ia32_sys_bpf 358 i386 execveat sys_execveat __compat_sys_ia32_execveat -359 i386 socket sys_socket __sys_ia32_socket -360 i386 socketpair sys_socketpair __sys_ia32_socketpair -361 i386 bind sys_bind __sys_ia32_bind -362 i386 connect sys_connect __sys_ia32_connect -363 i386 listen sys_listen __sys_ia32_listen -364 i386 accept4 sys_accept4 __sys_ia32_accept4 +359 i386 socket sys_socket __ia32_sys_socket +360 i386 socketpair sys_socketpair __ia32_sys_socketpair +361 i386 bind sys_bind __ia32_sys_bind +362 i386 connect sys_connect __ia32_sys_connect +363 i386 listen sys_listen __ia32_sys_listen +364 i386 accept4 sys_accept4 __ia32_sys_accept4 365 i386 getsockopt sys_getsockopt __compat_sys_ia32_getsockopt 366 i386 setsockopt sys_setsockopt __compat_sys_ia32_setsockopt -367 i386 getsockname sys_getsockname __sys_ia32_getsockname -368 i386 getpeername sys_getpeername __sys_ia32_getpeername -369 i386 sendto sys_sendto __sys_ia32_sendto +367 i386 getsockname sys_getsockname __ia32_sys_getsockname +368 i386 getpeername sys_getpeername __ia32_sys_getpeername +369 i386 sendto sys_sendto __ia32_sys_sendto 370 i386 sendmsg sys_sendmsg __compat_sys_ia32_sendmsg 371 i386 recvfrom sys_recvfrom __compat_sys_ia32_recvfrom 372 i386 recvmsg sys_recvmsg __compat_sys_ia32_recvmsg -373 i386 shutdown sys_shutdown __sys_ia32_shutdown -374 i386 userfaultfd sys_userfaultfd __sys_ia32_userfaultfd -375 i386 membarrier sys_membarrier __sys_ia32_membarrier -376 i386 mlock2 sys_mlock2 __sys_ia32_mlock2 -377 i386 copy_file_range sys_copy_file_range __sys_ia32_copy_file_range +373 i386 shutdown sys_shutdown __ia32_sys_shutdown +374 i386 userfaultfd sys_userfaultfd __ia32_sys_userfaultfd +375 i386 membarrier sys_membarrier __ia32_sys_membarrier +376 i386 mlock2 sys_mlock2 __ia32_sys_mlock2 +377 i386 copy_file_range sys_copy_file_range __ia32_sys_copy_file_range 378 i386 preadv2 sys_preadv2 __compat_sys_ia32_preadv2 379 i386 pwritev2 sys_pwritev2 __compat_sys_ia32_pwritev2 -380 i386 pkey_mprotect sys_pkey_mprotect __sys_ia32_pkey_mprotect -381 i386 pkey_alloc sys_pkey_alloc __sys_ia32_pkey_alloc -382 i386 pkey_free sys_pkey_free __sys_ia32_pkey_free -383 i386 statx sys_statx __sys_ia32_statx +380 i386 pkey_mprotect sys_pkey_mprotect __ia32_sys_pkey_mprotect +381 i386 pkey_alloc sys_pkey_alloc __ia32_sys_pkey_alloc +382 i386 pkey_free sys_pkey_free __ia32_sys_pkey_free +383 i386 statx sys_statx __ia32_sys_statx 384 i386 arch_prctl sys_arch_prctl __compat_sys_ia32_arch_prctl diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index 49d7e4970110..798a3c2bff4f 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -22,7 +22,7 @@ #ifdef CONFIG_IA32_EMULATION /* * For IA32 emulation, we need to handle "compat" syscalls *and* create - * additional wrappers (aptly named __sys_ia32_sys_xyzzy) which decode the + * additional wrappers (aptly named __ia32_sys_xyzzy) which decode the * ia32 regs in the proper order for shared or "common" syscalls. As some * syscalls may not be implemented, we need to expand COND_SYSCALL in * kernel/sys_ni.c and SYS_NI in kernel/time/posix-stubs.c to cover this @@ -37,20 +37,20 @@ } \ #define SC_IA32_WRAPPERx(x, name, ...) \ - asmlinkage long __sys_ia32##name(const struct pt_regs *regs); \ - ALLOW_ERROR_INJECTION(__sys_ia32##name, ERRNO); \ - asmlinkage long __sys_ia32##name(const struct pt_regs *regs) \ + asmlinkage long __ia32_sys##name(const struct pt_regs *regs); \ + ALLOW_ERROR_INJECTION(__ia32_sys##name, ERRNO); \ + asmlinkage long __ia32_sys##name(const struct pt_regs *regs) \ { \ - return SyS##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__)); \ + return __se_sys##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__));\ } #define COND_SYSCALL(name) \ cond_syscall(sys_##name); \ - cond_syscall(__sys_ia32_##name) + cond_syscall(__ia32_sys_##name) #define SYS_NI(name) \ SYSCALL_ALIAS(sys_##name, sys_ni_posix_timers); \ - SYSCALL_ALIAS(__sys_ia32_##name, sys_ni_posix_timers) + SYSCALL_ALIAS(__ia32_sys_##name, sys_ni_posix_timers) #else /* CONFIG_IA32_EMULATION */ #define COMPAT_SC_IA32_STUBx(x, name, ...) @@ -115,9 +115,10 @@ * Instead of the generic __SYSCALL_DEFINEx() definition, this macro takes * struct pt_regs *regs as the only argument of the syscall stub named * sys_*(). It decodes just the registers it needs and passes them on to - * the SyS_*() wrapper and then to the SYSC_*() function doing the actual job. - * These wrappers and functions are inlined, meaning that the assembly looks - * as follows (slightly re-ordered): + * the __se_sys_*() wrapper performing sign extension and then to the + * __do_sys_*() function doing the actual job. These wrappers and functions + * are inlined (at least in very most cases), meaning that the assembly looks + * as follows (slightly re-ordered for better readability): * * : <-- syscall with 4 parameters * callq <__fentry__> @@ -140,7 +141,7 @@ * the call chain. * * If IA32_EMULATION is enabled, this macro generates an additional wrapper - * named __sys_ia32_*() which decodes the struct pt_regs *regs according + * named __ia32_sys_*() which decodes the struct pt_regs *regs according * to the i386 calling convention (bx, cx, dx, si, di, bp). * * As the generic SYSCALL_DEFINE0() macro does not decode any parameters for @@ -151,21 +152,21 @@ #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(const struct pt_regs *regs); \ ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ - static long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ - static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ + static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ + static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ asmlinkage long sys##name(const struct pt_regs *regs) \ { \ - return SyS##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\ + return __se_sys##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\ } \ SC_IA32_WRAPPERx(x, name, __VA_ARGS__) \ - static long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ + static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ { \ - long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ + long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ __MAP(x,__SC_TEST,__VA_ARGS__); \ __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ return ret; \ } \ - static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) + static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) /* * For VSYSCALLS, we need to declare these three syscalls with the new diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index d7168b3a4b4c..70fcda1a9049 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -223,21 +223,26 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event) #define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) +/* + * The asmlinkage stub is aliased to a function named __se_sys_*() which + * sign-extends 32-bit ints to longs whenever needed. The actual work is + * done within __do_sys_*(). + */ #ifndef __SYSCALL_DEFINEx #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ - __attribute__((alias(__stringify(SyS##name)))); \ + __attribute__((alias(__stringify(__se_sys##name)))); \ ALLOW_ERROR_INJECTION(sys##name, ERRNO); \ - static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ - asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ - asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ + static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ + asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ + asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ { \ - long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ + long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__));\ __MAP(x,__SC_TEST,__VA_ARGS__); \ __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ return ret; \ } \ - static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) + static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) #endif /* __SYSCALL_DEFINEx */ /* diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter index d84a5674e95e..ce129e61cc65 100755 --- a/scripts/bloat-o-meter +++ b/scripts/bloat-o-meter @@ -30,7 +30,7 @@ def getsizes(file, format): if type in format: # strip generated symbols if name.startswith("__mod_"): continue - if name.startswith("SyS_"): continue + if name.startswith("__se_sys"): continue if name.startswith("compat_SyS_"): continue if name == "linux_banner": continue # statics and some other optimizations adds random .NUMBER -- cgit v1.2.3-59-g8ed1b From 5ac9efa3c50d7caff9f3933bb8a3ad1139d92d92 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Mon, 9 Apr 2018 12:51:43 +0200 Subject: syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention Tidy the naming convention for compat syscall subs. Hints which describe the purpose of the stub go in front and receive a double underscore to denote that they are generated on-the-fly by the COMPAT_SYSCALL_DEFINEx() macro. For the generic case, this means: t kernel_waitid # common C function (see kernel/exit.c) __do_compat_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) T __se_compat_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long, # casts them to unsigned long and then to # the declared type) T compat_sys_waitid # alias to __se_compat_sys_waitid() # (taking parameters as declared), to # be included in syscall table For x86, the naming is as follows: t kernel_waitid # common C function (see kernel/exit.c) __do_compat_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) t __se_compat_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long, # casts them to unsigned long and then to # the declared type) T __ia32_compat_sys_waitid # IA32_EMULATION 32-bit-ptregs -> C stub, # calls __se_compat_sys_waitid(); to be # included in syscall table T __x32_compat_sys_waitid # x32 64-bit-ptregs -> C stub, calls # __se_compat_sys_waitid(); to be included # in syscall table If only one of IA32_EMULATION and x32 is enabled, __se_compat_sys_waitid() may be inlined into the stub __{ia32,x32}_compat_sys_waitid(). Suggested-by: Ingo Molnar Signed-off-by: Dominik Brodowski Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180409105145.5364-3-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- Documentation/process/adding-syscalls.rst | 4 +- arch/x86/entry/syscalls/syscall_32.tbl | 252 +++++++++++++++--------------- arch/x86/entry/syscalls/syscall_64.tbl | 72 ++++----- arch/x86/include/asm/syscall_wrapper.h | 44 +++--- arch/x86/include/asm/syscalls.h | 2 +- include/linux/compat.h | 29 ++-- scripts/bloat-o-meter | 2 +- 7 files changed, 205 insertions(+), 200 deletions(-) (limited to 'include') diff --git a/Documentation/process/adding-syscalls.rst b/Documentation/process/adding-syscalls.rst index 314c8bf6f2a2..0d4f29bc798b 100644 --- a/Documentation/process/adding-syscalls.rst +++ b/Documentation/process/adding-syscalls.rst @@ -360,7 +360,7 @@ First, the entry in ``arch/x86/entry/syscalls/syscall_32.tbl`` gets an extra column to indicate that a 32-bit userspace program running on a 64-bit kernel should hit the compat entry point:: - 380 i386 xyzzy sys_xyzzy compat_sys_xyzzy + 380 i386 xyzzy sys_xyzzy __ia32_compat_sys_xyzzy Second, you need to figure out what should happen for the x32 ABI version of the new system call. There's a choice here: the layout of the arguments @@ -373,7 +373,7 @@ the compatibility wrapper:: 333 64 xyzzy sys_xyzzy ... - 555 x32 xyzzy compat_sys_xyzzy + 555 x32 xyzzy __x32_compat_sys_xyzzy If no pointers are involved, then it is preferable to re-use the 64-bit system call for the x32 ABI (and consequently the entry in diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 539df8f6d0e1..0e6cb1335db2 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -4,7 +4,7 @@ # The format is: # # -# The __ia32_sys and __compat_sys_ia32 stubs are created on-the-fly for +# The __ia32_sys and __ia32_compat_sys stubs are created on-the-fly for # sys_*() system calls and compat_sys_*() compat system calls if # IA32_EMULATION is defined, and expect struct pt_regs *regs as their only # parameter. @@ -16,32 +16,32 @@ 2 i386 fork sys_fork 3 i386 read sys_read __ia32_sys_read 4 i386 write sys_write __ia32_sys_write -5 i386 open sys_open __compat_sys_ia32_open +5 i386 open sys_open __ia32_compat_sys_open 6 i386 close sys_close __ia32_sys_close 7 i386 waitpid sys_waitpid __ia32_sys_waitpid 8 i386 creat sys_creat __ia32_sys_creat 9 i386 link sys_link __ia32_sys_link 10 i386 unlink sys_unlink __ia32_sys_unlink -11 i386 execve sys_execve __compat_sys_ia32_execve +11 i386 execve sys_execve __ia32_compat_sys_execve 12 i386 chdir sys_chdir __ia32_sys_chdir -13 i386 time sys_time __compat_sys_ia32_time +13 i386 time sys_time __ia32_compat_sys_time 14 i386 mknod sys_mknod __ia32_sys_mknod 15 i386 chmod sys_chmod __ia32_sys_chmod 16 i386 lchown sys_lchown16 __ia32_sys_lchown16 17 i386 break 18 i386 oldstat sys_stat __ia32_sys_stat -19 i386 lseek sys_lseek __compat_sys_ia32_lseek +19 i386 lseek sys_lseek __ia32_compat_sys_lseek 20 i386 getpid sys_getpid -21 i386 mount sys_mount __compat_sys_ia32_mount +21 i386 mount sys_mount __ia32_compat_sys_mount 22 i386 umount sys_oldumount __ia32_sys_oldumount 23 i386 setuid sys_setuid16 __ia32_sys_setuid16 24 i386 getuid sys_getuid16 -25 i386 stime sys_stime __compat_sys_ia32_stime -26 i386 ptrace sys_ptrace __compat_sys_ia32_ptrace +25 i386 stime sys_stime __ia32_compat_sys_stime +26 i386 ptrace sys_ptrace __ia32_compat_sys_ptrace 27 i386 alarm sys_alarm __ia32_sys_alarm 28 i386 oldfstat sys_fstat __ia32_sys_fstat 29 i386 pause sys_pause -30 i386 utime sys_utime __compat_sys_ia32_utime +30 i386 utime sys_utime __ia32_compat_sys_utime 31 i386 stty 32 i386 gtty 33 i386 access sys_access __ia32_sys_access @@ -54,7 +54,7 @@ 40 i386 rmdir sys_rmdir __ia32_sys_rmdir 41 i386 dup sys_dup __ia32_sys_dup 42 i386 pipe sys_pipe __ia32_sys_pipe -43 i386 times sys_times __compat_sys_ia32_times +43 i386 times sys_times __ia32_compat_sys_times 44 i386 prof 45 i386 brk sys_brk __ia32_sys_brk 46 i386 setgid sys_setgid16 __ia32_sys_setgid16 @@ -65,84 +65,84 @@ 51 i386 acct sys_acct __ia32_sys_acct 52 i386 umount2 sys_umount __ia32_sys_umount 53 i386 lock -54 i386 ioctl sys_ioctl __compat_sys_ia32_ioctl -55 i386 fcntl sys_fcntl __compat_sys_ia32_fcntl64 +54 i386 ioctl sys_ioctl __ia32_compat_sys_ioctl +55 i386 fcntl sys_fcntl __ia32_compat_sys_fcntl64 56 i386 mpx 57 i386 setpgid sys_setpgid __ia32_sys_setpgid 58 i386 ulimit 59 i386 oldolduname sys_olduname __ia32_sys_olduname 60 i386 umask sys_umask __ia32_sys_umask 61 i386 chroot sys_chroot __ia32_sys_chroot -62 i386 ustat sys_ustat __compat_sys_ia32_ustat +62 i386 ustat sys_ustat __ia32_compat_sys_ustat 63 i386 dup2 sys_dup2 __ia32_sys_dup2 64 i386 getppid sys_getppid 65 i386 getpgrp sys_getpgrp 66 i386 setsid sys_setsid -67 i386 sigaction sys_sigaction __compat_sys_ia32_sigaction +67 i386 sigaction sys_sigaction __ia32_compat_sys_sigaction 68 i386 sgetmask sys_sgetmask 69 i386 ssetmask sys_ssetmask __ia32_sys_ssetmask 70 i386 setreuid sys_setreuid16 __ia32_sys_setreuid16 71 i386 setregid sys_setregid16 __ia32_sys_setregid16 72 i386 sigsuspend sys_sigsuspend __ia32_sys_sigsuspend -73 i386 sigpending sys_sigpending __compat_sys_ia32_sigpending +73 i386 sigpending sys_sigpending __ia32_compat_sys_sigpending 74 i386 sethostname sys_sethostname __ia32_sys_sethostname -75 i386 setrlimit sys_setrlimit __compat_sys_ia32_setrlimit -76 i386 getrlimit sys_old_getrlimit __compat_sys_ia32_old_getrlimit -77 i386 getrusage sys_getrusage __compat_sys_ia32_getrusage -78 i386 gettimeofday sys_gettimeofday __compat_sys_ia32_gettimeofday -79 i386 settimeofday sys_settimeofday __compat_sys_ia32_settimeofday +75 i386 setrlimit sys_setrlimit __ia32_compat_sys_setrlimit +76 i386 getrlimit sys_old_getrlimit __ia32_compat_sys_old_getrlimit +77 i386 getrusage sys_getrusage __ia32_compat_sys_getrusage +78 i386 gettimeofday sys_gettimeofday __ia32_compat_sys_gettimeofday +79 i386 settimeofday sys_settimeofday __ia32_compat_sys_settimeofday 80 i386 getgroups sys_getgroups16 __ia32_sys_getgroups16 81 i386 setgroups sys_setgroups16 __ia32_sys_setgroups16 -82 i386 select sys_old_select __compat_sys_ia32_old_select +82 i386 select sys_old_select __ia32_compat_sys_old_select 83 i386 symlink sys_symlink __ia32_sys_symlink 84 i386 oldlstat sys_lstat __ia32_sys_lstat 85 i386 readlink sys_readlink __ia32_sys_readlink 86 i386 uselib sys_uselib __ia32_sys_uselib 87 i386 swapon sys_swapon __ia32_sys_swapon 88 i386 reboot sys_reboot __ia32_sys_reboot -89 i386 readdir sys_old_readdir __compat_sys_ia32_old_readdir -90 i386 mmap sys_old_mmap __compat_sys_ia32_x86_mmap +89 i386 readdir sys_old_readdir __ia32_compat_sys_old_readdir +90 i386 mmap sys_old_mmap __ia32_compat_sys_x86_mmap 91 i386 munmap sys_munmap __ia32_sys_munmap -92 i386 truncate sys_truncate __compat_sys_ia32_truncate -93 i386 ftruncate sys_ftruncate __compat_sys_ia32_ftruncate +92 i386 truncate sys_truncate __ia32_compat_sys_truncate +93 i386 ftruncate sys_ftruncate __ia32_compat_sys_ftruncate 94 i386 fchmod sys_fchmod __ia32_sys_fchmod 95 i386 fchown sys_fchown16 __ia32_sys_fchown16 96 i386 getpriority sys_getpriority __ia32_sys_getpriority 97 i386 setpriority sys_setpriority __ia32_sys_setpriority 98 i386 profil -99 i386 statfs sys_statfs __compat_sys_ia32_statfs -100 i386 fstatfs sys_fstatfs __compat_sys_ia32_fstatfs +99 i386 statfs sys_statfs __ia32_compat_sys_statfs +100 i386 fstatfs sys_fstatfs __ia32_compat_sys_fstatfs 101 i386 ioperm sys_ioperm __ia32_sys_ioperm -102 i386 socketcall sys_socketcall __compat_sys_ia32_socketcall +102 i386 socketcall sys_socketcall __ia32_compat_sys_socketcall 103 i386 syslog sys_syslog __ia32_sys_syslog -104 i386 setitimer sys_setitimer __compat_sys_ia32_setitimer -105 i386 getitimer sys_getitimer __compat_sys_ia32_getitimer -106 i386 stat sys_newstat __compat_sys_ia32_newstat -107 i386 lstat sys_newlstat __compat_sys_ia32_newlstat -108 i386 fstat sys_newfstat __compat_sys_ia32_newfstat +104 i386 setitimer sys_setitimer __ia32_compat_sys_setitimer +105 i386 getitimer sys_getitimer __ia32_compat_sys_getitimer +106 i386 stat sys_newstat __ia32_compat_sys_newstat +107 i386 lstat sys_newlstat __ia32_compat_sys_newlstat +108 i386 fstat sys_newfstat __ia32_compat_sys_newfstat 109 i386 olduname sys_uname __ia32_sys_uname 110 i386 iopl sys_iopl __ia32_sys_iopl 111 i386 vhangup sys_vhangup 112 i386 idle 113 i386 vm86old sys_vm86old sys_ni_syscall -114 i386 wait4 sys_wait4 __compat_sys_ia32_wait4 +114 i386 wait4 sys_wait4 __ia32_compat_sys_wait4 115 i386 swapoff sys_swapoff __ia32_sys_swapoff -116 i386 sysinfo sys_sysinfo __compat_sys_ia32_sysinfo -117 i386 ipc sys_ipc __compat_sys_ia32_ipc +116 i386 sysinfo sys_sysinfo __ia32_compat_sys_sysinfo +117 i386 ipc sys_ipc __ia32_compat_sys_ipc 118 i386 fsync sys_fsync __ia32_sys_fsync 119 i386 sigreturn sys_sigreturn sys32_sigreturn -120 i386 clone sys_clone __compat_sys_ia32_x86_clone +120 i386 clone sys_clone __ia32_compat_sys_x86_clone 121 i386 setdomainname sys_setdomainname __ia32_sys_setdomainname 122 i386 uname sys_newuname __ia32_sys_newuname 123 i386 modify_ldt sys_modify_ldt __ia32_sys_modify_ldt -124 i386 adjtimex sys_adjtimex __compat_sys_ia32_adjtimex +124 i386 adjtimex sys_adjtimex __ia32_compat_sys_adjtimex 125 i386 mprotect sys_mprotect __ia32_sys_mprotect -126 i386 sigprocmask sys_sigprocmask __compat_sys_ia32_sigprocmask +126 i386 sigprocmask sys_sigprocmask __ia32_compat_sys_sigprocmask 127 i386 create_module 128 i386 init_module sys_init_module __ia32_sys_init_module 129 i386 delete_module sys_delete_module __ia32_sys_delete_module 130 i386 get_kernel_syms -131 i386 quotactl sys_quotactl __compat_sys_ia32_quotactl32 +131 i386 quotactl sys_quotactl __ia32_compat_sys_quotactl32 132 i386 getpgid sys_getpgid __ia32_sys_getpgid 133 i386 fchdir sys_fchdir __ia32_sys_fchdir 134 i386 bdflush sys_bdflush __ia32_sys_bdflush @@ -152,15 +152,15 @@ 138 i386 setfsuid sys_setfsuid16 __ia32_sys_setfsuid16 139 i386 setfsgid sys_setfsgid16 __ia32_sys_setfsgid16 140 i386 _llseek sys_llseek __ia32_sys_llseek -141 i386 getdents sys_getdents __compat_sys_ia32_getdents -142 i386 _newselect sys_select __compat_sys_ia32_select +141 i386 getdents sys_getdents __ia32_compat_sys_getdents +142 i386 _newselect sys_select __ia32_compat_sys_select 143 i386 flock sys_flock __ia32_sys_flock 144 i386 msync sys_msync __ia32_sys_msync -145 i386 readv sys_readv __compat_sys_ia32_readv -146 i386 writev sys_writev __compat_sys_ia32_writev +145 i386 readv sys_readv __ia32_compat_sys_readv +146 i386 writev sys_writev __ia32_compat_sys_writev 147 i386 getsid sys_getsid __ia32_sys_getsid 148 i386 fdatasync sys_fdatasync __ia32_sys_fdatasync -149 i386 _sysctl sys_sysctl __compat_sys_ia32_sysctl +149 i386 _sysctl sys_sysctl __ia32_compat_sys_sysctl 150 i386 mlock sys_mlock __ia32_sys_mlock 151 i386 munlock sys_munlock __ia32_sys_munlock 152 i386 mlockall sys_mlockall __ia32_sys_mlockall @@ -172,8 +172,8 @@ 158 i386 sched_yield sys_sched_yield 159 i386 sched_get_priority_max sys_sched_get_priority_max __ia32_sys_sched_get_priority_max 160 i386 sched_get_priority_min sys_sched_get_priority_min __ia32_sys_sched_get_priority_min -161 i386 sched_rr_get_interval sys_sched_rr_get_interval __compat_sys_ia32_sched_rr_get_interval -162 i386 nanosleep sys_nanosleep __compat_sys_ia32_nanosleep +161 i386 sched_rr_get_interval sys_sched_rr_get_interval __ia32_compat_sys_sched_rr_get_interval +162 i386 nanosleep sys_nanosleep __ia32_compat_sys_nanosleep 163 i386 mremap sys_mremap __ia32_sys_mremap 164 i386 setresuid sys_setresuid16 __ia32_sys_setresuid16 165 i386 getresuid sys_getresuid16 __ia32_sys_getresuid16 @@ -185,30 +185,30 @@ 171 i386 getresgid sys_getresgid16 __ia32_sys_getresgid16 172 i386 prctl sys_prctl __ia32_sys_prctl 173 i386 rt_sigreturn sys_rt_sigreturn sys32_rt_sigreturn -174 i386 rt_sigaction sys_rt_sigaction __compat_sys_ia32_rt_sigaction +174 i386 rt_sigaction sys_rt_sigaction __ia32_compat_sys_rt_sigaction 175 i386 rt_sigprocmask sys_rt_sigprocmask __ia32_sys_rt_sigprocmask -176 i386 rt_sigpending sys_rt_sigpending __compat_sys_ia32_rt_sigpending -177 i386 rt_sigtimedwait sys_rt_sigtimedwait __compat_sys_ia32_rt_sigtimedwait -178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo __compat_sys_ia32_rt_sigqueueinfo +176 i386 rt_sigpending sys_rt_sigpending __ia32_compat_sys_rt_sigpending +177 i386 rt_sigtimedwait sys_rt_sigtimedwait __ia32_compat_sys_rt_sigtimedwait +178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo __ia32_compat_sys_rt_sigqueueinfo 179 i386 rt_sigsuspend sys_rt_sigsuspend __ia32_sys_rt_sigsuspend -180 i386 pread64 sys_pread64 __compat_sys_ia32_x86_pread -181 i386 pwrite64 sys_pwrite64 __compat_sys_ia32_x86_pwrite +180 i386 pread64 sys_pread64 __ia32_compat_sys_x86_pread +181 i386 pwrite64 sys_pwrite64 __ia32_compat_sys_x86_pwrite 182 i386 chown sys_chown16 __ia32_sys_chown16 183 i386 getcwd sys_getcwd __ia32_sys_getcwd 184 i386 capget sys_capget __ia32_sys_capget 185 i386 capset sys_capset __ia32_sys_capset -186 i386 sigaltstack sys_sigaltstack __compat_sys_ia32_sigaltstack -187 i386 sendfile sys_sendfile __compat_sys_ia32_sendfile +186 i386 sigaltstack sys_sigaltstack __ia32_compat_sys_sigaltstack +187 i386 sendfile sys_sendfile __ia32_compat_sys_sendfile 188 i386 getpmsg 189 i386 putpmsg 190 i386 vfork sys_vfork -191 i386 ugetrlimit sys_getrlimit __compat_sys_ia32_getrlimit +191 i386 ugetrlimit sys_getrlimit __ia32_compat_sys_getrlimit 192 i386 mmap2 sys_mmap_pgoff __ia32_sys_mmap_pgoff -193 i386 truncate64 sys_truncate64 __compat_sys_ia32_x86_truncate64 -194 i386 ftruncate64 sys_ftruncate64 __compat_sys_ia32_x86_ftruncate64 -195 i386 stat64 sys_stat64 __compat_sys_ia32_x86_stat64 -196 i386 lstat64 sys_lstat64 __compat_sys_ia32_x86_lstat64 -197 i386 fstat64 sys_fstat64 __compat_sys_ia32_x86_fstat64 +193 i386 truncate64 sys_truncate64 __ia32_compat_sys_x86_truncate64 +194 i386 ftruncate64 sys_ftruncate64 __ia32_compat_sys_x86_ftruncate64 +195 i386 stat64 sys_stat64 __ia32_compat_sys_x86_stat64 +196 i386 lstat64 sys_lstat64 __ia32_compat_sys_x86_lstat64 +197 i386 fstat64 sys_fstat64 __ia32_compat_sys_x86_fstat64 198 i386 lchown32 sys_lchown __ia32_sys_lchown 199 i386 getuid32 sys_getuid 200 i386 getgid32 sys_getgid @@ -232,11 +232,11 @@ 218 i386 mincore sys_mincore __ia32_sys_mincore 219 i386 madvise sys_madvise __ia32_sys_madvise 220 i386 getdents64 sys_getdents64 __ia32_sys_getdents64 -221 i386 fcntl64 sys_fcntl64 __compat_sys_ia32_fcntl64 +221 i386 fcntl64 sys_fcntl64 __ia32_compat_sys_fcntl64 # 222 is unused # 223 is unused 224 i386 gettid sys_gettid -225 i386 readahead sys_readahead __compat_sys_ia32_x86_readahead +225 i386 readahead sys_readahead __ia32_compat_sys_x86_readahead 226 i386 setxattr sys_setxattr __ia32_sys_setxattr 227 i386 lsetxattr sys_lsetxattr __ia32_sys_lsetxattr 228 i386 fsetxattr sys_fsetxattr __ia32_sys_fsetxattr @@ -251,67 +251,67 @@ 237 i386 fremovexattr sys_fremovexattr __ia32_sys_fremovexattr 238 i386 tkill sys_tkill __ia32_sys_tkill 239 i386 sendfile64 sys_sendfile64 __ia32_sys_sendfile64 -240 i386 futex sys_futex __compat_sys_ia32_futex -241 i386 sched_setaffinity sys_sched_setaffinity __compat_sys_ia32_sched_setaffinity -242 i386 sched_getaffinity sys_sched_getaffinity __compat_sys_ia32_sched_getaffinity +240 i386 futex sys_futex __ia32_compat_sys_futex +241 i386 sched_setaffinity sys_sched_setaffinity __ia32_compat_sys_sched_setaffinity +242 i386 sched_getaffinity sys_sched_getaffinity __ia32_compat_sys_sched_getaffinity 243 i386 set_thread_area sys_set_thread_area __ia32_sys_set_thread_area 244 i386 get_thread_area sys_get_thread_area __ia32_sys_get_thread_area -245 i386 io_setup sys_io_setup __compat_sys_ia32_io_setup +245 i386 io_setup sys_io_setup __ia32_compat_sys_io_setup 246 i386 io_destroy sys_io_destroy __ia32_sys_io_destroy -247 i386 io_getevents sys_io_getevents __compat_sys_ia32_io_getevents -248 i386 io_submit sys_io_submit __compat_sys_ia32_io_submit +247 i386 io_getevents sys_io_getevents __ia32_compat_sys_io_getevents +248 i386 io_submit sys_io_submit __ia32_compat_sys_io_submit 249 i386 io_cancel sys_io_cancel __ia32_sys_io_cancel -250 i386 fadvise64 sys_fadvise64 __compat_sys_ia32_x86_fadvise64 +250 i386 fadvise64 sys_fadvise64 __ia32_compat_sys_x86_fadvise64 # 251 is available for reuse (was briefly sys_set_zone_reclaim) 252 i386 exit_group sys_exit_group __ia32_sys_exit_group -253 i386 lookup_dcookie sys_lookup_dcookie __compat_sys_ia32_lookup_dcookie +253 i386 lookup_dcookie sys_lookup_dcookie __ia32_compat_sys_lookup_dcookie 254 i386 epoll_create sys_epoll_create __ia32_sys_epoll_create 255 i386 epoll_ctl sys_epoll_ctl __ia32_sys_epoll_ctl 256 i386 epoll_wait sys_epoll_wait __ia32_sys_epoll_wait 257 i386 remap_file_pages sys_remap_file_pages __ia32_sys_remap_file_pages 258 i386 set_tid_address sys_set_tid_address __ia32_sys_set_tid_address -259 i386 timer_create sys_timer_create __compat_sys_ia32_timer_create -260 i386 timer_settime sys_timer_settime __compat_sys_ia32_timer_settime -261 i386 timer_gettime sys_timer_gettime __compat_sys_ia32_timer_gettime +259 i386 timer_create sys_timer_create __ia32_compat_sys_timer_create +260 i386 timer_settime sys_timer_settime __ia32_compat_sys_timer_settime +261 i386 timer_gettime sys_timer_gettime __ia32_compat_sys_timer_gettime 262 i386 timer_getoverrun sys_timer_getoverrun __ia32_sys_timer_getoverrun 263 i386 timer_delete sys_timer_delete __ia32_sys_timer_delete -264 i386 clock_settime sys_clock_settime __compat_sys_ia32_clock_settime -265 i386 clock_gettime sys_clock_gettime __compat_sys_ia32_clock_gettime -266 i386 clock_getres sys_clock_getres __compat_sys_ia32_clock_getres -267 i386 clock_nanosleep sys_clock_nanosleep __compat_sys_ia32_clock_nanosleep -268 i386 statfs64 sys_statfs64 __compat_sys_ia32_statfs64 -269 i386 fstatfs64 sys_fstatfs64 __compat_sys_ia32_fstatfs64 +264 i386 clock_settime sys_clock_settime __ia32_compat_sys_clock_settime +265 i386 clock_gettime sys_clock_gettime __ia32_compat_sys_clock_gettime +266 i386 clock_getres sys_clock_getres __ia32_compat_sys_clock_getres +267 i386 clock_nanosleep sys_clock_nanosleep __ia32_compat_sys_clock_nanosleep +268 i386 statfs64 sys_statfs64 __ia32_compat_sys_statfs64 +269 i386 fstatfs64 sys_fstatfs64 __ia32_compat_sys_fstatfs64 270 i386 tgkill sys_tgkill __ia32_sys_tgkill -271 i386 utimes sys_utimes __compat_sys_ia32_utimes -272 i386 fadvise64_64 sys_fadvise64_64 __compat_sys_ia32_x86_fadvise64_64 +271 i386 utimes sys_utimes __ia32_compat_sys_utimes +272 i386 fadvise64_64 sys_fadvise64_64 __ia32_compat_sys_x86_fadvise64_64 273 i386 vserver 274 i386 mbind sys_mbind __ia32_sys_mbind -275 i386 get_mempolicy sys_get_mempolicy __compat_sys_ia32_get_mempolicy +275 i386 get_mempolicy sys_get_mempolicy __ia32_compat_sys_get_mempolicy 276 i386 set_mempolicy sys_set_mempolicy __ia32_sys_set_mempolicy -277 i386 mq_open sys_mq_open __compat_sys_ia32_mq_open +277 i386 mq_open sys_mq_open __ia32_compat_sys_mq_open 278 i386 mq_unlink sys_mq_unlink __ia32_sys_mq_unlink -279 i386 mq_timedsend sys_mq_timedsend __compat_sys_ia32_mq_timedsend -280 i386 mq_timedreceive sys_mq_timedreceive __compat_sys_ia32_mq_timedreceive -281 i386 mq_notify sys_mq_notify __compat_sys_ia32_mq_notify -282 i386 mq_getsetattr sys_mq_getsetattr __compat_sys_ia32_mq_getsetattr -283 i386 kexec_load sys_kexec_load __compat_sys_ia32_kexec_load -284 i386 waitid sys_waitid __compat_sys_ia32_waitid +279 i386 mq_timedsend sys_mq_timedsend __ia32_compat_sys_mq_timedsend +280 i386 mq_timedreceive sys_mq_timedreceive __ia32_compat_sys_mq_timedreceive +281 i386 mq_notify sys_mq_notify __ia32_compat_sys_mq_notify +282 i386 mq_getsetattr sys_mq_getsetattr __ia32_compat_sys_mq_getsetattr +283 i386 kexec_load sys_kexec_load __ia32_compat_sys_kexec_load +284 i386 waitid sys_waitid __ia32_compat_sys_waitid # 285 sys_setaltroot 286 i386 add_key sys_add_key __ia32_sys_add_key 287 i386 request_key sys_request_key __ia32_sys_request_key -288 i386 keyctl sys_keyctl __compat_sys_ia32_keyctl +288 i386 keyctl sys_keyctl __ia32_compat_sys_keyctl 289 i386 ioprio_set sys_ioprio_set __ia32_sys_ioprio_set 290 i386 ioprio_get sys_ioprio_get __ia32_sys_ioprio_get 291 i386 inotify_init sys_inotify_init 292 i386 inotify_add_watch sys_inotify_add_watch __ia32_sys_inotify_add_watch 293 i386 inotify_rm_watch sys_inotify_rm_watch __ia32_sys_inotify_rm_watch 294 i386 migrate_pages sys_migrate_pages __ia32_sys_migrate_pages -295 i386 openat sys_openat __compat_sys_ia32_openat +295 i386 openat sys_openat __ia32_compat_sys_openat 296 i386 mkdirat sys_mkdirat __ia32_sys_mkdirat 297 i386 mknodat sys_mknodat __ia32_sys_mknodat 298 i386 fchownat sys_fchownat __ia32_sys_fchownat -299 i386 futimesat sys_futimesat __compat_sys_ia32_futimesat -300 i386 fstatat64 sys_fstatat64 __compat_sys_ia32_x86_fstatat +299 i386 futimesat sys_futimesat __ia32_compat_sys_futimesat +300 i386 fstatat64 sys_fstatat64 __ia32_compat_sys_x86_fstatat 301 i386 unlinkat sys_unlinkat __ia32_sys_unlinkat 302 i386 renameat sys_renameat __ia32_sys_renameat 303 i386 linkat sys_linkat __ia32_sys_linkat @@ -319,47 +319,47 @@ 305 i386 readlinkat sys_readlinkat __ia32_sys_readlinkat 306 i386 fchmodat sys_fchmodat __ia32_sys_fchmodat 307 i386 faccessat sys_faccessat __ia32_sys_faccessat -308 i386 pselect6 sys_pselect6 __compat_sys_ia32_pselect6 -309 i386 ppoll sys_ppoll __compat_sys_ia32_ppoll +308 i386 pselect6 sys_pselect6 __ia32_compat_sys_pselect6 +309 i386 ppoll sys_ppoll __ia32_compat_sys_ppoll 310 i386 unshare sys_unshare __ia32_sys_unshare -311 i386 set_robust_list sys_set_robust_list __compat_sys_ia32_set_robust_list -312 i386 get_robust_list sys_get_robust_list __compat_sys_ia32_get_robust_list +311 i386 set_robust_list sys_set_robust_list __ia32_compat_sys_set_robust_list +312 i386 get_robust_list sys_get_robust_list __ia32_compat_sys_get_robust_list 313 i386 splice sys_splice __ia32_sys_splice -314 i386 sync_file_range sys_sync_file_range __compat_sys_ia32_x86_sync_file_range +314 i386 sync_file_range sys_sync_file_range __ia32_compat_sys_x86_sync_file_range 315 i386 tee sys_tee __ia32_sys_tee -316 i386 vmsplice sys_vmsplice __compat_sys_ia32_vmsplice -317 i386 move_pages sys_move_pages __compat_sys_ia32_move_pages +316 i386 vmsplice sys_vmsplice __ia32_compat_sys_vmsplice +317 i386 move_pages sys_move_pages __ia32_compat_sys_move_pages 318 i386 getcpu sys_getcpu __ia32_sys_getcpu 319 i386 epoll_pwait sys_epoll_pwait __ia32_sys_epoll_pwait -320 i386 utimensat sys_utimensat __compat_sys_ia32_utimensat -321 i386 signalfd sys_signalfd __compat_sys_ia32_signalfd +320 i386 utimensat sys_utimensat __ia32_compat_sys_utimensat +321 i386 signalfd sys_signalfd __ia32_compat_sys_signalfd 322 i386 timerfd_create sys_timerfd_create __ia32_sys_timerfd_create 323 i386 eventfd sys_eventfd __ia32_sys_eventfd -324 i386 fallocate sys_fallocate __compat_sys_ia32_x86_fallocate -325 i386 timerfd_settime sys_timerfd_settime __compat_sys_ia32_timerfd_settime -326 i386 timerfd_gettime sys_timerfd_gettime __compat_sys_ia32_timerfd_gettime -327 i386 signalfd4 sys_signalfd4 __compat_sys_ia32_signalfd4 +324 i386 fallocate sys_fallocate __ia32_compat_sys_x86_fallocate +325 i386 timerfd_settime sys_timerfd_settime __ia32_compat_sys_timerfd_settime +326 i386 timerfd_gettime sys_timerfd_gettime __ia32_compat_sys_timerfd_gettime +327 i386 signalfd4 sys_signalfd4 __ia32_compat_sys_signalfd4 328 i386 eventfd2 sys_eventfd2 __ia32_sys_eventfd2 329 i386 epoll_create1 sys_epoll_create1 __ia32_sys_epoll_create1 330 i386 dup3 sys_dup3 __ia32_sys_dup3 331 i386 pipe2 sys_pipe2 __ia32_sys_pipe2 332 i386 inotify_init1 sys_inotify_init1 __ia32_sys_inotify_init1 -333 i386 preadv sys_preadv __compat_sys_ia32_preadv -334 i386 pwritev sys_pwritev __compat_sys_ia32_pwritev -335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo __compat_sys_ia32_rt_tgsigqueueinfo +333 i386 preadv sys_preadv __ia32_compat_sys_preadv +334 i386 pwritev sys_pwritev __ia32_compat_sys_pwritev +335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo __ia32_compat_sys_rt_tgsigqueueinfo 336 i386 perf_event_open sys_perf_event_open __ia32_sys_perf_event_open -337 i386 recvmmsg sys_recvmmsg __compat_sys_ia32_recvmmsg +337 i386 recvmmsg sys_recvmmsg __ia32_compat_sys_recvmmsg 338 i386 fanotify_init sys_fanotify_init __ia32_sys_fanotify_init -339 i386 fanotify_mark sys_fanotify_mark __compat_sys_ia32_fanotify_mark +339 i386 fanotify_mark sys_fanotify_mark __ia32_compat_sys_fanotify_mark 340 i386 prlimit64 sys_prlimit64 __ia32_sys_prlimit64 341 i386 name_to_handle_at sys_name_to_handle_at __ia32_sys_name_to_handle_at -342 i386 open_by_handle_at sys_open_by_handle_at __compat_sys_ia32_open_by_handle_at -343 i386 clock_adjtime sys_clock_adjtime __compat_sys_ia32_clock_adjtime +342 i386 open_by_handle_at sys_open_by_handle_at __ia32_compat_sys_open_by_handle_at +343 i386 clock_adjtime sys_clock_adjtime __ia32_compat_sys_clock_adjtime 344 i386 syncfs sys_syncfs __ia32_sys_syncfs -345 i386 sendmmsg sys_sendmmsg __compat_sys_ia32_sendmmsg +345 i386 sendmmsg sys_sendmmsg __ia32_compat_sys_sendmmsg 346 i386 setns sys_setns __ia32_sys_setns -347 i386 process_vm_readv sys_process_vm_readv __compat_sys_ia32_process_vm_readv -348 i386 process_vm_writev sys_process_vm_writev __compat_sys_ia32_process_vm_writev +347 i386 process_vm_readv sys_process_vm_readv __ia32_compat_sys_process_vm_readv +348 i386 process_vm_writev sys_process_vm_writev __ia32_compat_sys_process_vm_writev 349 i386 kcmp sys_kcmp __ia32_sys_kcmp 350 i386 finit_module sys_finit_module __ia32_sys_finit_module 351 i386 sched_setattr sys_sched_setattr __ia32_sys_sched_setattr @@ -369,30 +369,30 @@ 355 i386 getrandom sys_getrandom __ia32_sys_getrandom 356 i386 memfd_create sys_memfd_create __ia32_sys_memfd_create 357 i386 bpf sys_bpf __ia32_sys_bpf -358 i386 execveat sys_execveat __compat_sys_ia32_execveat +358 i386 execveat sys_execveat __ia32_compat_sys_execveat 359 i386 socket sys_socket __ia32_sys_socket 360 i386 socketpair sys_socketpair __ia32_sys_socketpair 361 i386 bind sys_bind __ia32_sys_bind 362 i386 connect sys_connect __ia32_sys_connect 363 i386 listen sys_listen __ia32_sys_listen 364 i386 accept4 sys_accept4 __ia32_sys_accept4 -365 i386 getsockopt sys_getsockopt __compat_sys_ia32_getsockopt -366 i386 setsockopt sys_setsockopt __compat_sys_ia32_setsockopt +365 i386 getsockopt sys_getsockopt __ia32_compat_sys_getsockopt +366 i386 setsockopt sys_setsockopt __ia32_compat_sys_setsockopt 367 i386 getsockname sys_getsockname __ia32_sys_getsockname 368 i386 getpeername sys_getpeername __ia32_sys_getpeername 369 i386 sendto sys_sendto __ia32_sys_sendto -370 i386 sendmsg sys_sendmsg __compat_sys_ia32_sendmsg -371 i386 recvfrom sys_recvfrom __compat_sys_ia32_recvfrom -372 i386 recvmsg sys_recvmsg __compat_sys_ia32_recvmsg +370 i386 sendmsg sys_sendmsg __ia32_compat_sys_sendmsg +371 i386 recvfrom sys_recvfrom __ia32_compat_sys_recvfrom +372 i386 recvmsg sys_recvmsg __ia32_compat_sys_recvmsg 373 i386 shutdown sys_shutdown __ia32_sys_shutdown 374 i386 userfaultfd sys_userfaultfd __ia32_sys_userfaultfd 375 i386 membarrier sys_membarrier __ia32_sys_membarrier 376 i386 mlock2 sys_mlock2 __ia32_sys_mlock2 377 i386 copy_file_range sys_copy_file_range __ia32_sys_copy_file_range -378 i386 preadv2 sys_preadv2 __compat_sys_ia32_preadv2 -379 i386 pwritev2 sys_pwritev2 __compat_sys_ia32_pwritev2 +378 i386 preadv2 sys_preadv2 __ia32_compat_sys_preadv2 +379 i386 pwritev2 sys_pwritev2 __ia32_compat_sys_pwritev2 380 i386 pkey_mprotect sys_pkey_mprotect __ia32_sys_pkey_mprotect 381 i386 pkey_alloc sys_pkey_alloc __ia32_sys_pkey_alloc 382 i386 pkey_free sys_pkey_free __ia32_sys_pkey_free 383 i386 statx sys_statx __ia32_sys_statx -384 i386 arch_prctl sys_arch_prctl __compat_sys_ia32_arch_prctl +384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index a83c0f7f462f..73f4951fc2fa 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -342,43 +342,43 @@ # # x32-specific system call numbers start at 512 to avoid cache impact -# for native 64-bit operation. The __compat_sys_x32 stubs are created +# for native 64-bit operation. The __x32_compat_sys stubs are created # on-the-fly for compat_sys_*() compatibility system calls if X86_X32 # is defined. # -512 x32 rt_sigaction __compat_sys_x32_rt_sigaction +512 x32 rt_sigaction __x32_compat_sys_rt_sigaction 513 x32 rt_sigreturn sys32_x32_rt_sigreturn -514 x32 ioctl __compat_sys_x32_ioctl -515 x32 readv __compat_sys_x32_readv -516 x32 writev __compat_sys_x32_writev -517 x32 recvfrom __compat_sys_x32_recvfrom -518 x32 sendmsg __compat_sys_x32_sendmsg -519 x32 recvmsg __compat_sys_x32_recvmsg -520 x32 execve __compat_sys_x32_execve/ptregs -521 x32 ptrace __compat_sys_x32_ptrace -522 x32 rt_sigpending __compat_sys_x32_rt_sigpending -523 x32 rt_sigtimedwait __compat_sys_x32_rt_sigtimedwait -524 x32 rt_sigqueueinfo __compat_sys_x32_rt_sigqueueinfo -525 x32 sigaltstack __compat_sys_x32_sigaltstack -526 x32 timer_create __compat_sys_x32_timer_create -527 x32 mq_notify __compat_sys_x32_mq_notify -528 x32 kexec_load __compat_sys_x32_kexec_load -529 x32 waitid __compat_sys_x32_waitid -530 x32 set_robust_list __compat_sys_x32_set_robust_list -531 x32 get_robust_list __compat_sys_x32_get_robust_list -532 x32 vmsplice __compat_sys_x32_vmsplice -533 x32 move_pages __compat_sys_x32_move_pages -534 x32 preadv __compat_sys_x32_preadv64 -535 x32 pwritev __compat_sys_x32_pwritev64 -536 x32 rt_tgsigqueueinfo __compat_sys_x32_rt_tgsigqueueinfo -537 x32 recvmmsg __compat_sys_x32_recvmmsg -538 x32 sendmmsg __compat_sys_x32_sendmmsg -539 x32 process_vm_readv __compat_sys_x32_process_vm_readv -540 x32 process_vm_writev __compat_sys_x32_process_vm_writev -541 x32 setsockopt __compat_sys_x32_setsockopt -542 x32 getsockopt __compat_sys_x32_getsockopt -543 x32 io_setup __compat_sys_x32_io_setup -544 x32 io_submit __compat_sys_x32_io_submit -545 x32 execveat __compat_sys_x32_execveat/ptregs -546 x32 preadv2 __compat_sys_x32_preadv64v2 -547 x32 pwritev2 __compat_sys_x32_pwritev64v2 +514 x32 ioctl __x32_compat_sys_ioctl +515 x32 readv __x32_compat_sys_readv +516 x32 writev __x32_compat_sys_writev +517 x32 recvfrom __x32_compat_sys_recvfrom +518 x32 sendmsg __x32_compat_sys_sendmsg +519 x32 recvmsg __x32_compat_sys_recvmsg +520 x32 execve __x32_compat_sys_execve/ptregs +521 x32 ptrace __x32_compat_sys_ptrace +522 x32 rt_sigpending __x32_compat_sys_rt_sigpending +523 x32 rt_sigtimedwait __x32_compat_sys_rt_sigtimedwait +524 x32 rt_sigqueueinfo __x32_compat_sys_rt_sigqueueinfo +525 x32 sigaltstack __x32_compat_sys_sigaltstack +526 x32 timer_create __x32_compat_sys_timer_create +527 x32 mq_notify __x32_compat_sys_mq_notify +528 x32 kexec_load __x32_compat_sys_kexec_load +529 x32 waitid __x32_compat_sys_waitid +530 x32 set_robust_list __x32_compat_sys_set_robust_list +531 x32 get_robust_list __x32_compat_sys_get_robust_list +532 x32 vmsplice __x32_compat_sys_vmsplice +533 x32 move_pages __x32_compat_sys_move_pages +534 x32 preadv __x32_compat_sys_preadv64 +535 x32 pwritev __x32_compat_sys_pwritev64 +536 x32 rt_tgsigqueueinfo __x32_compat_sys_rt_tgsigqueueinfo +537 x32 recvmmsg __x32_compat_sys_recvmmsg +538 x32 sendmmsg __x32_compat_sys_sendmmsg +539 x32 process_vm_readv __x32_compat_sys_process_vm_readv +540 x32 process_vm_writev __x32_compat_sys_process_vm_writev +541 x32 setsockopt __x32_compat_sys_setsockopt +542 x32 getsockopt __x32_compat_sys_getsockopt +543 x32 io_setup __x32_compat_sys_io_setup +544 x32 io_submit __x32_compat_sys_io_submit +545 x32 execveat __x32_compat_sys_execveat/ptregs +546 x32 preadv2 __x32_compat_sys_preadv64v2 +547 x32 pwritev2 __x32_compat_sys_pwritev64v2 diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index 798a3c2bff4f..8d0951cfc2d4 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -29,11 +29,11 @@ * case as well. */ #define COMPAT_SC_IA32_STUBx(x, name, ...) \ - asmlinkage long __compat_sys_ia32##name(const struct pt_regs *regs);\ - ALLOW_ERROR_INJECTION(__compat_sys_ia32##name, ERRNO); \ - asmlinkage long __compat_sys_ia32##name(const struct pt_regs *regs)\ + asmlinkage long __ia32_compat_sys##name(const struct pt_regs *regs);\ + ALLOW_ERROR_INJECTION(__ia32_compat_sys##name, ERRNO); \ + asmlinkage long __ia32_compat_sys##name(const struct pt_regs *regs)\ { \ - return c_SyS##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__));\ + return __se_compat_sys##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__));\ } \ #define SC_IA32_WRAPPERx(x, name, ...) \ @@ -65,11 +65,11 @@ * with x86_64 obviously do not need such care. */ #define COMPAT_SC_X32_STUBx(x, name, ...) \ - asmlinkage long __compat_sys_x32##name(const struct pt_regs *regs);\ - ALLOW_ERROR_INJECTION(__compat_sys_x32##name, ERRNO); \ - asmlinkage long __compat_sys_x32##name(const struct pt_regs *regs)\ + asmlinkage long __x32_compat_sys##name(const struct pt_regs *regs);\ + ALLOW_ERROR_INJECTION(__x32_compat_sys##name, ERRNO); \ + asmlinkage long __x32_compat_sys##name(const struct pt_regs *regs)\ { \ - return c_SyS##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\ + return __se_compat_sys##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\ } \ #else /* CONFIG_X86_X32 */ @@ -84,16 +84,16 @@ * of them. There is no need to implement COMPAT_SYSCALL_DEFINE0, as it is * unused on x86. */ -#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ - static long c_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ - static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ - COMPAT_SC_IA32_STUBx(x, name, __VA_ARGS__) \ - COMPAT_SC_X32_STUBx(x, name, __VA_ARGS__) \ - static long c_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ - { \ - return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ - } \ - static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ + static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ + COMPAT_SC_IA32_STUBx(x, name, __VA_ARGS__) \ + COMPAT_SC_X32_STUBx(x, name, __VA_ARGS__) \ + static long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ + { \ + return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ + } \ + static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) /* * As some compat syscalls may not be implemented, we need to expand @@ -101,12 +101,12 @@ * kernel/time/posix-stubs.c to cover this case as well. */ #define COND_SYSCALL_COMPAT(name) \ - cond_syscall(__compat_sys_ia32_##name); \ - cond_syscall(__compat_sys_x32_##name) + cond_syscall(__ia32_compat_sys_##name); \ + cond_syscall(__x32_compat_sys_##name) #define COMPAT_SYS_NI(name) \ - SYSCALL_ALIAS(__compat_sys_ia32_##name, sys_ni_posix_timers); \ - SYSCALL_ALIAS(__compat_sys_x32_##name, sys_ni_posix_timers) + SYSCALL_ALIAS(__ia32_compat_sys_##name, sys_ni_posix_timers); \ + SYSCALL_ALIAS(__x32_compat_sys_##name, sys_ni_posix_timers) #endif /* CONFIG_COMPAT */ diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index d4d18d94695c..9fa979dd0d9d 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -20,7 +20,7 @@ long ksys_ioperm(unsigned long from, unsigned long num, int turn_on); #ifdef CONFIG_X86_32 -/* +/* * These definitions are only valid on pure 32-bit systems; x86-64 uses a * different syscall calling convention */ diff --git a/include/linux/compat.h b/include/linux/compat.h index 2d85ec5cfda2..aca050aac7b6 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -63,19 +63,24 @@ #define COMPAT_SYSCALL_DEFINE6(name, ...) \ COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) +/* + * The asmlinkage stub is aliased to a function named __se_compat_sys_*() which + * sign-extends 32-bit ints to longs whenever needed. The actual work is + * done within __do_compat_sys_*(). + */ #ifndef COMPAT_SYSCALL_DEFINEx -#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ - asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ - asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\ - __attribute__((alias(__stringify(compat_SyS##name)))); \ - ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ - static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ - asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\ - asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\ - { \ - return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ - } \ - static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ + asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \ + __attribute__((alias(__stringify(__se_compat_sys##name)))); \ + ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \ + static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ + asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \ + asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ + { \ + return __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ + } \ + static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) #endif /* COMPAT_SYSCALL_DEFINEx */ #ifndef compat_user_stack_pointer diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter index ce129e61cc65..a923f05edb36 100755 --- a/scripts/bloat-o-meter +++ b/scripts/bloat-o-meter @@ -31,7 +31,7 @@ def getsizes(file, format): # strip generated symbols if name.startswith("__mod_"): continue if name.startswith("__se_sys"): continue - if name.startswith("compat_SyS_"): continue + if name.startswith("__se_compat_sys"): continue if name == "linux_banner": continue # statics and some other optimizations adds random .NUMBER name = re_NUMBER.sub('', name) -- cgit v1.2.3-59-g8ed1b