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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-01 10:21:43 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-01 10:21:43 -0400
commit08d76760832993050ad8c25e63b56773ef2ca303 (patch)
treeabdcf148dfe43cd49f30f204f1dac6978107a508 /include
parent5f56886521d6ddd3648777fae44d82382dd8c87f (diff)
parent99e621f796d7f0341a51e8cdf32b81663b10b448 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull compat cleanup from Al Viro: "Mostly about syscall wrappers this time; there will be another pile with patches in the same general area from various people, but I'd rather push those after both that and vfs.git pile are in." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: syscalls.h: slightly reduce the jungles of macros get rid of union semop in sys_semctl(2) arguments make do_mremap() static sparc: no need to sign-extend in sync_file_range() wrapper ppc compat wrappers for add_key(2) and request_key(2) are pointless x86: trim sys_ia32.h x86: sys32_kill and sys32_mprotect are pointless get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC merge compat sys_ipc instances consolidate compat lookup_dcookie() convert vmsplice to COMPAT_SYSCALL_DEFINE switch getrusage() to COMPAT_SYSCALL_DEFINE switch epoll_pwait to COMPAT_SYSCALL_DEFINE convert sendfile{,64} to COMPAT_SYSCALL_DEFINE switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect make HAVE_SYSCALL_WRAPPERS unconditional consolidate cond_syscall and SYSCALL_ALIAS declarations teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long get rid of duplicate logics in __SC_....[1-6] definitions
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/unistd.h17
-rw-r--r--include/linux/compat.h51
-rw-r--r--include/linux/linkage.h21
-rw-r--r--include/linux/mm.h3
-rw-r--r--include/linux/syscalls.h156
5 files changed, 86 insertions, 162 deletions
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index 4077b5d9ff81..0501fa3f783d 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -9,20 +9,3 @@
9#define __ARCH_WANT_STAT64 9#define __ARCH_WANT_STAT64
10#define __ARCH_WANT_SYS_LLSEEK 10#define __ARCH_WANT_SYS_LLSEEK
11#endif 11#endif
12
13/*
14 * "Conditional" syscalls
15 *
16 * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
17 * but it doesn't work on all toolchains, so we just do it by hand
18 */
19#ifndef cond_syscall
20#ifdef CONFIG_SYMBOL_PREFIX
21#define __SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX
22#else
23#define __SYMBOL_PREFIX
24#endif
25#define cond_syscall(x) asm(".weak\t" __SYMBOL_PREFIX #x "\n\t" \
26 ".set\t" __SYMBOL_PREFIX #x "," \
27 __SYMBOL_PREFIX "sys_ni_syscall")
28#endif
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 377cd8c3395e..d53c35352ea9 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -27,12 +27,6 @@
27#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v)) 27#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v))
28#endif 28#endif
29 29
30#define __SC_CCAST1(t1, a1) __SC_DELOUSE(t1,a1)
31#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__)
32#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__)
33#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__)
34#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__)
35#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__)
36#define COMPAT_SYSCALL_DEFINE1(name, ...) \ 30#define COMPAT_SYSCALL_DEFINE1(name, ...) \
37 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 31 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
38#define COMPAT_SYSCALL_DEFINE2(name, ...) \ 32#define COMPAT_SYSCALL_DEFINE2(name, ...) \
@@ -46,24 +40,15 @@
46#define COMPAT_SYSCALL_DEFINE6(name, ...) \ 40#define COMPAT_SYSCALL_DEFINE6(name, ...) \
47 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 41 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
48 42
49#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
50
51#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ 43#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
52 asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__)); \ 44 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
53 static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)); \ 45 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
54 asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__)) \ 46 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
55 { \ 47 { \
56 return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__)); \ 48 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
57 } \ 49 } \
58 SYSCALL_ALIAS(compat_sys##name, compat_SyS##name); \ 50 SYSCALL_ALIAS(compat_sys##name, compat_SyS##name); \
59 static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)) 51 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
60
61#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
62
63#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
64 asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__))
65
66#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
67 52
68#ifndef compat_user_stack_pointer 53#ifndef compat_user_stack_pointer
69#define compat_user_stack_pointer() current_user_stack_pointer() 54#define compat_user_stack_pointer() current_user_stack_pointer()
@@ -326,21 +311,13 @@ asmlinkage long
326compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 311compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
327 compat_size_t __user *len_ptr); 312 compat_size_t __user *len_ptr);
328 313
329#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC 314asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
330long compat_sys_semctl(int first, int second, int third, void __user *uptr); 315asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
331long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); 316asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
332long compat_sys_msgrcv(int first, int second, int msgtyp, int third, 317asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
333 int version, void __user *uptr);
334long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
335 void __user *uptr);
336#else
337long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
338long compat_sys_msgsnd(int msqid, struct compat_msgbuf __user *msgp,
339 compat_ssize_t msgsz, int msgflg); 318 compat_ssize_t msgsz, int msgflg);
340long compat_sys_msgrcv(int msqid, struct compat_msgbuf __user *msgp, 319asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp,
341 compat_ssize_t msgsz, long msgtyp, int msgflg); 320 compat_ssize_t msgsz, long msgtyp, int msgflg);
342long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
343#endif
344long compat_sys_msgctl(int first, int second, void __user *uptr); 321long compat_sys_msgctl(int first, int second, void __user *uptr);
345long compat_sys_shmctl(int first, int second, void __user *uptr); 322long compat_sys_shmctl(int first, int second, void __user *uptr);
346long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 323long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
@@ -444,13 +421,13 @@ extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
444asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 421asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
445 compat_long_t addr, compat_long_t data); 422 compat_long_t addr, compat_long_t data);
446 423
424asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, size_t);
447/* 425/*
448 * epoll (fs/eventpoll.c) compat bits follow ... 426 * epoll (fs/eventpoll.c) compat bits follow ...
449 */ 427 */
450struct epoll_event; 428struct epoll_event; /* fortunately, this one is fixed-layout */
451#define compat_epoll_event epoll_event
452asmlinkage long compat_sys_epoll_pwait(int epfd, 429asmlinkage long compat_sys_epoll_pwait(int epfd,
453 struct compat_epoll_event __user *events, 430 struct epoll_event __user *events,
454 int maxevents, int timeout, 431 int maxevents, int timeout,
455 const compat_sigset_t __user *sigmask, 432 const compat_sigset_t __user *sigmask,
456 compat_size_t sigsetsize); 433 compat_size_t sigsetsize);
@@ -685,6 +662,8 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid,
685 662
686asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 663asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
687 compat_off_t __user *offset, compat_size_t count); 664 compat_off_t __user *offset, compat_size_t count);
665asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
666 compat_loff_t __user *offset, compat_size_t count);
688asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 667asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
689 compat_stack_t __user *uoss_ptr); 668 compat_stack_t __user *uoss_ptr);
690 669
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 807f1e533226..829d66c67fc2 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -2,6 +2,7 @@
2#define _LINUX_LINKAGE_H 2#define _LINUX_LINKAGE_H
3 3
4#include <linux/compiler.h> 4#include <linux/compiler.h>
5#include <linux/stringify.h>
5#include <asm/linkage.h> 6#include <asm/linkage.h>
6 7
7#ifdef __cplusplus 8#ifdef __cplusplus
@@ -14,6 +15,26 @@
14#define asmlinkage CPP_ASMLINKAGE 15#define asmlinkage CPP_ASMLINKAGE
15#endif 16#endif
16 17
18#ifndef SYMBOL_NAME
19#ifdef CONFIG_SYMBOL_PREFIX
20#define SYMBOL_NAME(x) CONFIG_SYMBOL_PREFIX ## x
21#else
22#define SYMBOL_NAME(x) x
23#endif
24#endif
25#define __SYMBOL_NAME(x) __stringify(SYMBOL_NAME(x))
26
27#ifndef cond_syscall
28#define cond_syscall(x) asm(".weak\t" __SYMBOL_NAME(x) \
29 "\n\t.set\t" __SYMBOL_NAME(x) "," __SYMBOL_NAME(sys_ni_syscall));
30#endif
31
32#ifndef SYSCALL_ALIAS
33#define SYSCALL_ALIAS(alias, name) \
34 asm ("\t.globl " __SYMBOL_NAME(alias) \
35 "\n\t.set\t" __SYMBOL_NAME(alias) "," __SYMBOL_NAME(name))
36#endif
37
17#define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE) 38#define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE)
18#define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE) 39#define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE)
19 40
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c05d7cfbb6b9..1a7f19e7f1a0 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1082,9 +1082,6 @@ extern unsigned long move_page_tables(struct vm_area_struct *vma,
1082 unsigned long old_addr, struct vm_area_struct *new_vma, 1082 unsigned long old_addr, struct vm_area_struct *new_vma,
1083 unsigned long new_addr, unsigned long len, 1083 unsigned long new_addr, unsigned long len,
1084 bool need_rmap_locks); 1084 bool need_rmap_locks);
1085extern unsigned long do_mremap(unsigned long addr,
1086 unsigned long old_len, unsigned long new_len,
1087 unsigned long flags, unsigned long new_addr);
1088extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start, 1085extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,
1089 unsigned long end, pgprot_t newprot, 1086 unsigned long end, pgprot_t newprot,
1090 int dirty_accountable, int prot_numa); 1087 int dirty_accountable, int prot_numa);
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 313a8e0a6553..4147d700a293 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -78,49 +78,34 @@ struct sigaltstack;
78#include <linux/key.h> 78#include <linux/key.h>
79#include <trace/syscall.h> 79#include <trace/syscall.h>
80 80
81#define __SC_DECL1(t1, a1) t1 a1 81/*
82#define __SC_DECL2(t2, a2, ...) t2 a2, __SC_DECL1(__VA_ARGS__) 82 * __MAP - apply a macro to syscall arguments
83#define __SC_DECL3(t3, a3, ...) t3 a3, __SC_DECL2(__VA_ARGS__) 83 * __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
84#define __SC_DECL4(t4, a4, ...) t4 a4, __SC_DECL3(__VA_ARGS__) 84 * m(t1, a1), m(t2, a2), ..., m(tn, an)
85#define __SC_DECL5(t5, a5, ...) t5 a5, __SC_DECL4(__VA_ARGS__) 85 * The first argument must be equal to the amount of type/name
86#define __SC_DECL6(t6, a6, ...) t6 a6, __SC_DECL5(__VA_ARGS__) 86 * pairs given. Note that this list of pairs (i.e. the arguments
87 87 * of __MAP starting at the third one) is in the same format as
88#define __SC_LONG1(t1, a1) long a1 88 * for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
89#define __SC_LONG2(t2, a2, ...) long a2, __SC_LONG1(__VA_ARGS__) 89 */
90#define __SC_LONG3(t3, a3, ...) long a3, __SC_LONG2(__VA_ARGS__) 90#define __MAP0(m,...)
91#define __SC_LONG4(t4, a4, ...) long a4, __SC_LONG3(__VA_ARGS__) 91#define __MAP1(m,t,a) m(t,a)
92#define __SC_LONG5(t5, a5, ...) long a5, __SC_LONG4(__VA_ARGS__) 92#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
93#define __SC_LONG6(t6, a6, ...) long a6, __SC_LONG5(__VA_ARGS__) 93#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
94 94#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
95#define __SC_CAST1(t1, a1) (t1) a1 95#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
96#define __SC_CAST2(t2, a2, ...) (t2) a2, __SC_CAST1(__VA_ARGS__) 96#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
97#define __SC_CAST3(t3, a3, ...) (t3) a3, __SC_CAST2(__VA_ARGS__) 97#define __MAP(n,...) __MAP##n(__VA_ARGS__)
98#define __SC_CAST4(t4, a4, ...) (t4) a4, __SC_CAST3(__VA_ARGS__) 98
99#define __SC_CAST5(t5, a5, ...) (t5) a5, __SC_CAST4(__VA_ARGS__) 99#define __SC_DECL(t, a) t a
100#define __SC_CAST6(t6, a6, ...) (t6) a6, __SC_CAST5(__VA_ARGS__) 100#define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
101 101#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
102#define __SC_TEST(type) BUILD_BUG_ON(sizeof(type) > sizeof(long)) 102#define __SC_CAST(t, a) (t) a
103#define __SC_TEST1(t1, a1) __SC_TEST(t1) 103#define __SC_ARGS(t, a) a
104#define __SC_TEST2(t2, a2, ...) __SC_TEST(t2); __SC_TEST1(__VA_ARGS__) 104#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
105#define __SC_TEST3(t3, a3, ...) __SC_TEST(t3); __SC_TEST2(__VA_ARGS__)
106#define __SC_TEST4(t4, a4, ...) __SC_TEST(t4); __SC_TEST3(__VA_ARGS__)
107#define __SC_TEST5(t5, a5, ...) __SC_TEST(t5); __SC_TEST4(__VA_ARGS__)
108#define __SC_TEST6(t6, a6, ...) __SC_TEST(t6); __SC_TEST5(__VA_ARGS__)
109 105
110#ifdef CONFIG_FTRACE_SYSCALLS 106#ifdef CONFIG_FTRACE_SYSCALLS
111#define __SC_STR_ADECL1(t, a) #a 107#define __SC_STR_ADECL(t, a) #a
112#define __SC_STR_ADECL2(t, a, ...) #a, __SC_STR_ADECL1(__VA_ARGS__) 108#define __SC_STR_TDECL(t, a) #t
113#define __SC_STR_ADECL3(t, a, ...) #a, __SC_STR_ADECL2(__VA_ARGS__)
114#define __SC_STR_ADECL4(t, a, ...) #a, __SC_STR_ADECL3(__VA_ARGS__)
115#define __SC_STR_ADECL5(t, a, ...) #a, __SC_STR_ADECL4(__VA_ARGS__)
116#define __SC_STR_ADECL6(t, a, ...) #a, __SC_STR_ADECL5(__VA_ARGS__)
117
118#define __SC_STR_TDECL1(t, a) #t
119#define __SC_STR_TDECL2(t, a, ...) #t, __SC_STR_TDECL1(__VA_ARGS__)
120#define __SC_STR_TDECL3(t, a, ...) #t, __SC_STR_TDECL2(__VA_ARGS__)
121#define __SC_STR_TDECL4(t, a, ...) #t, __SC_STR_TDECL3(__VA_ARGS__)
122#define __SC_STR_TDECL5(t, a, ...) #t, __SC_STR_TDECL4(__VA_ARGS__)
123#define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__)
124 109
125extern struct ftrace_event_class event_class_syscall_enter; 110extern struct ftrace_event_class event_class_syscall_enter;
126extern struct ftrace_event_class event_class_syscall_exit; 111extern struct ftrace_event_class event_class_syscall_exit;
@@ -155,7 +140,13 @@ extern struct trace_event_functions exit_syscall_print_funcs;
155 __attribute__((section("_ftrace_events"))) \ 140 __attribute__((section("_ftrace_events"))) \
156 *__event_exit_##sname = &event_exit_##sname; 141 *__event_exit_##sname = &event_exit_##sname;
157 142
158#define SYSCALL_METADATA(sname, nb) \ 143#define SYSCALL_METADATA(sname, nb, ...) \
144 static const char *types_##sname[] = { \
145 __MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
146 }; \
147 static const char *args_##sname[] = { \
148 __MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
149 }; \
159 SYSCALL_TRACE_ENTER_EVENT(sname); \ 150 SYSCALL_TRACE_ENTER_EVENT(sname); \
160 SYSCALL_TRACE_EXIT_EVENT(sname); \ 151 SYSCALL_TRACE_EXIT_EVENT(sname); \
161 static struct syscall_metadata __used \ 152 static struct syscall_metadata __used \
@@ -163,8 +154,8 @@ extern struct trace_event_functions exit_syscall_print_funcs;
163 .name = "sys"#sname, \ 154 .name = "sys"#sname, \
164 .syscall_nr = -1, /* Filled in at boot */ \ 155 .syscall_nr = -1, /* Filled in at boot */ \
165 .nb_args = nb, \ 156 .nb_args = nb, \
166 .types = types_##sname, \ 157 .types = nb ? types_##sname : NULL, \
167 .args = args_##sname, \ 158 .args = nb ? args_##sname : NULL, \
168 .enter_event = &event_enter_##sname, \ 159 .enter_event = &event_enter_##sname, \
169 .exit_event = &event_exit_##sname, \ 160 .exit_event = &event_exit_##sname, \
170 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \ 161 .enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
@@ -172,26 +163,13 @@ extern struct trace_event_functions exit_syscall_print_funcs;
172 static struct syscall_metadata __used \ 163 static struct syscall_metadata __used \
173 __attribute__((section("__syscalls_metadata"))) \ 164 __attribute__((section("__syscalls_metadata"))) \
174 *__p_syscall_meta_##sname = &__syscall_meta_##sname; 165 *__p_syscall_meta_##sname = &__syscall_meta_##sname;
166#else
167#define SYSCALL_METADATA(sname, nb, ...)
168#endif
175 169
176#define SYSCALL_DEFINE0(sname) \ 170#define SYSCALL_DEFINE0(sname) \
177 SYSCALL_TRACE_ENTER_EVENT(_##sname); \ 171 SYSCALL_METADATA(_##sname, 0); \
178 SYSCALL_TRACE_EXIT_EVENT(_##sname); \
179 static struct syscall_metadata __used \
180 __syscall_meta__##sname = { \
181 .name = "sys_"#sname, \
182 .syscall_nr = -1, /* Filled in at boot */ \
183 .nb_args = 0, \
184 .enter_event = &event_enter__##sname, \
185 .exit_event = &event_exit__##sname, \
186 .enter_fields = LIST_HEAD_INIT(__syscall_meta__##sname.enter_fields), \
187 }; \
188 static struct syscall_metadata __used \
189 __attribute__((section("__syscalls_metadata"))) \
190 *__p_syscall_meta_##sname = &__syscall_meta__##sname; \
191 asmlinkage long sys_##sname(void) 172 asmlinkage long sys_##sname(void)
192#else
193#define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void)
194#endif
195 173
196#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 174#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
197#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 175#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
@@ -200,57 +178,23 @@ extern struct trace_event_functions exit_syscall_print_funcs;
200#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 178#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
201#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 179#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
202 180
203#ifdef CONFIG_PPC64
204#define SYSCALL_ALIAS(alias, name) \
205 asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
206 "\t.globl ." #alias "\n\t.set ." #alias ", ." #name)
207#else
208#if defined(CONFIG_ALPHA) || defined(CONFIG_MIPS)
209#define SYSCALL_ALIAS(alias, name) \
210 asm ( #alias " = " #name "\n\t.globl " #alias)
211#else
212#define SYSCALL_ALIAS(alias, name) \
213 asm ("\t.globl " #alias "\n\t.set " #alias ", " #name)
214#endif
215#endif
216
217#ifdef CONFIG_FTRACE_SYSCALLS
218#define SYSCALL_DEFINEx(x, sname, ...) \ 181#define SYSCALL_DEFINEx(x, sname, ...) \
219 static const char *types_##sname[] = { \ 182 SYSCALL_METADATA(sname, x, __VA_ARGS__) \
220 __SC_STR_TDECL##x(__VA_ARGS__) \
221 }; \
222 static const char *args_##sname[] = { \
223 __SC_STR_ADECL##x(__VA_ARGS__) \
224 }; \
225 SYSCALL_METADATA(sname, x); \
226 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) 183 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
227#else
228#define SYSCALL_DEFINEx(x, sname, ...) \
229 __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
230#endif
231
232#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
233
234#define SYSCALL_DEFINE(name) static inline long SYSC_##name
235 184
185#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
236#define __SYSCALL_DEFINEx(x, name, ...) \ 186#define __SYSCALL_DEFINEx(x, name, ...) \
237 asmlinkage long sys##name(__SC_DECL##x(__VA_ARGS__)); \ 187 asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
238 static inline long SYSC##name(__SC_DECL##x(__VA_ARGS__)); \ 188 static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
239 asmlinkage long SyS##name(__SC_LONG##x(__VA_ARGS__)) \ 189 asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
240 { \ 190 { \
241 __SC_TEST##x(__VA_ARGS__); \ 191 long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
242 return (long) SYSC##name(__SC_CAST##x(__VA_ARGS__)); \ 192 __MAP(x,__SC_TEST,__VA_ARGS__); \
193 __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
194 return ret; \
243 } \ 195 } \
244 SYSCALL_ALIAS(sys##name, SyS##name); \ 196 SYSCALL_ALIAS(sys##name, SyS##name); \
245 static inline long SYSC##name(__SC_DECL##x(__VA_ARGS__)) 197 static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
246
247#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */
248
249#define SYSCALL_DEFINE(name) asmlinkage long sys_##name
250#define __SYSCALL_DEFINEx(x, name, ...) \
251 asmlinkage long sys##name(__SC_DECL##x(__VA_ARGS__))
252
253#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */
254 198
255asmlinkage long sys_time(time_t __user *tloc); 199asmlinkage long sys_time(time_t __user *tloc);
256asmlinkage long sys_stime(time_t __user *tptr); 200asmlinkage long sys_stime(time_t __user *tptr);
@@ -694,7 +638,7 @@ asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
694asmlinkage long sys_semget(key_t key, int nsems, int semflg); 638asmlinkage long sys_semget(key_t key, int nsems, int semflg);
695asmlinkage long sys_semop(int semid, struct sembuf __user *sops, 639asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
696 unsigned nsops); 640 unsigned nsops);
697asmlinkage long sys_semctl(int semid, int semnum, int cmd, union semun arg); 641asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
698asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, 642asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
699 unsigned nsops, 643 unsigned nsops,
700 const struct timespec __user *timeout); 644 const struct timespec __user *timeout);