diff options
Diffstat (limited to 'include/linux/compat.h')
| -rw-r--r-- | include/linux/compat.h | 107 |
1 files changed, 105 insertions, 2 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h index e4920bd58a47..76a87fb57ac2 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -23,6 +23,59 @@ #define COMPAT_USE_64BIT_TIME 0 #endif +#ifndef __SC_DELOUSE +#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v)) +#endif + +#define __SC_CCAST1(t1, a1) __SC_DELOUSE(t1,a1) +#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__) +#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__) +#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__) +#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__) +#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE1(name, ...) \ + COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE2(name, ...) \ + COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE3(name, ...) \ + COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE4(name, ...) \ + COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE5(name, ...) \ + COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE6(name, ...) \ + COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) + +#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS + +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__)); \ + static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)); \ + asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__)) \ + { \ + return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__)); \ + } \ + SYSCALL_ALIAS(compat_sys##name, compat_SyS##name); \ + static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)) + +#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */ + +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__)) + +#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */ + +#ifndef compat_user_stack_pointer +#define compat_user_stack_pointer() current_user_stack_pointer() +#endif +#ifndef compat_sigaltstack /* we'll need that for MIPS */ +typedef struct compat_sigaltstack { + compat_uptr_t ss_sp; + int ss_flags; + compat_size_t ss_size; +} compat_stack_t; +#endif + #define compat_jiffies_to_clock_t(x) \ (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) @@ -87,6 +140,20 @@ typedef struct { compat_sigset_word sig[_COMPAT_NSIG_WORDS]; } compat_sigset_t; +struct compat_sigaction { +#ifndef __ARCH_HAS_ODD_SIGACTION + compat_uptr_t sa_handler; + compat_ulong_t sa_flags; +#else + compat_ulong_t sa_flags; + compat_uptr_t sa_handler; +#endif +#ifdef __ARCH_HAS_SA_RESTORER + compat_uptr_t sa_restorer; +#endif + compat_sigset_t sa_mask __packed; +}; + /* * These functions operate strictly on struct compat_time* */ @@ -228,6 +295,15 @@ struct compat_robust_list_head { compat_uptr_t list_op_pending; }; +#ifdef CONFIG_COMPAT_OLD_SIGACTION +struct compat_old_sigaction { + compat_uptr_t sa_handler; + compat_old_sigset_t sa_mask; + compat_ulong_t sa_flags; + compat_uptr_t sa_restorer; +}; +#endif + struct compat_statfs; struct compat_statfs64; struct compat_old_linux_dirent; @@ -283,6 +359,7 @@ asmlinkage ssize_t compat_sys_preadv(unsigned long fd, asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen, u32 pos_low, u32 pos_high); +asmlinkage long comat_sys_lseek(unsigned int, compat_off_t, unsigned int); asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, const compat_uptr_t __user *envp); @@ -312,6 +389,11 @@ int get_compat_sigevent(struct sigevent *event, const struct compat_sigevent __user *u_event); long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); +#ifdef CONFIG_COMPAT_OLD_SIGACTION +asmlinkage long compat_sys_sigaction(int sig, + const struct compat_old_sigaction __user *act, + struct compat_old_sigaction __user *oact); +#endif static inline int compat_timeval_compare(struct compat_timeval *lhs, struct compat_timeval *rhs) @@ -346,7 +428,8 @@ asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); extern int compat_printk(const char *fmt, ...); -extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); +extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); +extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, @@ -448,11 +531,13 @@ asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, unsigned int nr_segs, unsigned int flags); asmlinkage long compat_sys_open(const char __user *filename, int flags, umode_t mode); -asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, +asmlinkage long compat_sys_openat(int dfd, const char __user *filename, int flags, umode_t mode); asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); +asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); +asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, @@ -537,6 +622,19 @@ asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, struct compat_timespec __user *uts, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize); +asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, + compat_sigset_t __user *oset, + compat_size_t sigsetsize); +asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, + compat_size_t sigsetsize); +#ifndef CONFIG_ODD_RT_SIGACTION +asmlinkage long compat_sys_rt_sigaction(int, + const struct compat_sigaction __user *, + struct compat_sigaction __user *, + compat_size_t); +#endif +asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo); asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); @@ -587,6 +685,11 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, compat_size_t count); +asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, + compat_stack_t __user *uoss_ptr); + +int compat_restore_altstack(const compat_stack_t __user *uss); +int __compat_save_altstack(compat_stack_t __user *, unsigned long); asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval); |