| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_COMPAT_H |
| #define _LINUX_COMPAT_H |
| /* |
| * These are the type definitions for the architecture specific |
| * syscall compatibility layer. |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/time.h> |
| |
| #include <linux/stat.h> |
| #include <linux/param.h> /* for HZ */ |
| #include <linux/sem.h> |
| #include <linux/socket.h> |
| #include <linux/if.h> |
| #include <linux/fs.h> |
| #include <linux/aio_abi.h> /* for aio_context_t */ |
| #include <linux/uaccess.h> |
| #include <linux/unistd.h> |
| |
| #include <asm/compat.h> |
| |
| #ifdef CONFIG_COMPAT |
| #include <asm/siginfo.h> |
| #include <asm/signal.h> |
| #endif |
| |
| #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 <asm/syscall_wrapper.h> |
| #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */ |
| |
| #ifndef COMPAT_USE_64BIT_TIME |
| #define COMPAT_USE_64BIT_TIME 0 |
| #endif |
| |
| #ifndef __SC_DELOUSE |
| #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__) |
| #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__) |
| |
| /* |
| * 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, ...) \ |
| __diag_push(); \ |
| __diag_ignore(GCC, 8, "-Wattribute-alias", \ |
| "Type aliasing is used to sanitize syscall arguments");\ |
| 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__)) \ |
| { \ |
| long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\ |
| __MAP(x,__SC_TEST,__VA_ARGS__); \ |
| return ret; \ |
| } \ |
| __diag_pop(); \ |
| static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) |
| #endif /* COMPAT_SYSCALL_DEFINEx */ |
| |
| struct compat_iovec { |
| compat_uptr_t iov_base; |
| compat_size_t iov_len; |
| }; |
| |
| #ifdef CONFIG_COMPAT |
| |
| #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 |
| #ifndef COMPAT_MINSIGSTKSZ |
| #define COMPAT_MINSIGSTKSZ MINSIGSTKSZ |
| #endif |
| |
| #define compat_jiffies_to_clock_t(x) \ |
| (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) |
| |
| typedef __compat_uid32_t compat_uid_t; |
| typedef __compat_gid32_t compat_gid_t; |
| |
| struct compat_sel_arg_struct; |
| struct rusage; |
| |
| struct old_itimerval32; |
| |
| struct compat_tms { |
| compat_clock_t tms_utime; |
| compat_clock_t tms_stime; |
| compat_clock_t tms_cutime; |
| compat_clock_t tms_cstime; |
| }; |
| |
| #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) |
| |
| typedef struct { |
| compat_sigset_word sig[_COMPAT_NSIG_WORDS]; |
| } compat_sigset_t; |
| |
| int set_compat_user_sigmask(const compat_sigset_t __user *umask, |
| size_t sigsetsize); |
| |
| struct compat_sigaction { |
| #ifndef __ARCH_HAS_IRIX_SIGACTION |
| compat_uptr_t sa_handler; |
| compat_ulong_t sa_flags; |
| #else |
| compat_uint_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; |
| }; |
| |
| typedef union compat_sigval { |
| compat_int_t sival_int; |
| compat_uptr_t sival_ptr; |
| } compat_sigval_t; |
| |
| typedef struct compat_siginfo { |
| int si_signo; |
| #ifndef __ARCH_HAS_SWAPPED_SIGINFO |
| int si_errno; |
| int si_code; |
| #else |
| int si_code; |
| int si_errno; |
| #endif |
| |
| union { |
| int _pad[128/sizeof(int) - 3]; |
| |
| /* kill() */ |
| struct { |
| compat_pid_t _pid; /* sender's pid */ |
| __compat_uid32_t _uid; /* sender's uid */ |
| } _kill; |
| |
| /* POSIX.1b timers */ |
| struct { |
| compat_timer_t _tid; /* timer id */ |
| int _overrun; /* overrun count */ |
| compat_sigval_t _sigval; /* same as below */ |
| } _timer; |
| |
| /* POSIX.1b signals */ |
| struct { |
| compat_pid_t _pid; /* sender's pid */ |
| __compat_uid32_t _uid; /* sender's uid */ |
| compat_sigval_t _sigval; |
| } _rt; |
| |
| /* SIGCHLD */ |
| struct { |
| compat_pid_t _pid; /* which child */ |
| __compat_uid32_t _uid; /* sender's uid */ |
| int _status; /* exit code */ |
| compat_clock_t _utime; |
| compat_clock_t _stime; |
| } _sigchld; |
| |
| #ifdef CONFIG_X86_X32_ABI |
| /* SIGCHLD (x32 version) */ |
| struct { |
| compat_pid_t _pid; /* which child */ |
| __compat_uid32_t _uid; /* sender's uid */ |
| int _status; /* exit code */ |
| compat_s64 _utime; |
| compat_s64 _stime; |
| } _sigchld_x32; |
| #endif |
| |
| /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGEMT */ |
| struct { |
| compat_uptr_t _addr; /* faulting insn/memory ref. */ |
| #ifdef __ARCH_SI_TRAPNO |
| int _trapno; /* TRAP # which caused the signal */ |
| #endif |
| #define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \ |
| sizeof(short) : __alignof__(compat_uptr_t)) |
| union { |
| /* |
| * used when si_code=BUS_MCEERR_AR or |
| * used when si_code=BUS_MCEERR_AO |
| */ |
| short int _addr_lsb; /* Valid LSB of the reported address. */ |
| /* used when si_code=SEGV_BNDERR */ |
| struct { |
| char _dummy_bnd[__COMPAT_ADDR_BND_PKEY_PAD]; |
| compat_uptr_t _lower; |
| compat_uptr_t _upper; |
| } _addr_bnd; |
| /* used when si_code=SEGV_PKUERR */ |
| struct { |
| char _dummy_pkey[__COMPAT_ADDR_BND_PKEY_PAD]; |
| u32 _pkey; |
| } _addr_pkey; |
| }; |
| } _sigfault; |
| |
| /* SIGPOLL */ |
| struct { |
| compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ |
| int _fd; |
| } _sigpoll; |
| |
| struct { |
| compat_uptr_t _call_addr; /* calling user insn */ |
| int _syscall; /* triggering system call number */ |
| unsigned int _arch; /* AUDIT_ARCH_* of syscall */ |
| } _sigsys; |
| } _sifields; |
| } compat_siginfo_t; |
| |
| struct compat_rlimit { |
| compat_ulong_t rlim_cur; |
| compat_ulong_t rlim_max; |
| }; |
| |
| struct compat_rusage { |
| struct old_timeval32 ru_utime; |
| struct old_timeval32 ru_stime; |
| compat_long_t ru_maxrss; |
| compat_long_t ru_ixrss; |
| compat_long_t ru_idrss; |
| compat_long_t ru_isrss; |
| compat_long_t ru_minflt; |
| compat_long_t ru_majflt; |
| compat_long_t ru_nswap; |
| compat_long_t ru_inblock; |
| compat_long_t ru_oublock; |
| compat_long_t ru_msgsnd; |
| compat_long_t ru_msgrcv; |
| compat_long_t ru_nsignals; |
| compat_long_t ru_nvcsw; |
| compat_long_t ru_nivcsw; |
| }; |
| |
| extern int put_compat_rusage(const struct rusage *, |
| struct compat_rusage __user *); |
| |
| struct compat_siginfo; |
| struct __compat_aio_sigset; |
| |
| struct compat_dirent { |
| u32 d_ino; |
| compat_off_t d_off; |
| u16 d_reclen; |
| char d_name[256]; |
| }; |
| |
| struct compat_ustat { |
| compat_daddr_t f_tfree; |
| compat_ino_t f_tinode; |
| char f_fname[6]; |
| char f_fpack[6]; |
| }; |
| |
| #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) |
| |
| typedef struct compat_sigevent { |
| compat_sigval_t sigev_value; |
| compat_int_t sigev_signo; |
| compat_int_t sigev_notify; |
| union { |
| compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; |
| compat_int_t _tid; |
| |
| struct { |
| compat_uptr_t _function; |
| compat_uptr_t _attribute; |
| } _sigev_thread; |
| } _sigev_un; |
| } compat_sigevent_t; |
| |
| struct compat_ifmap { |
| compat_ulong_t mem_start; |
| compat_ulong_t mem_end; |
| unsigned short base_addr; |
| unsigned char irq; |
| unsigned char dma; |
| unsigned char port; |
| }; |
| |
| struct compat_if_settings { |
| unsigned int type; /* Type of physical device or protocol */ |
| unsigned int size; /* Size of the data allocated by the caller */ |
| compat_uptr_t ifs_ifsu; /* union of pointers */ |
| }; |
| |
| struct compat_ifreq { |
| union { |
| char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ |
| } ifr_ifrn; |
| union { |
| struct sockaddr ifru_addr; |
| struct sockaddr ifru_dstaddr; |
| struct sockaddr ifru_broadaddr; |
| struct sockaddr ifru_netmask; |
| struct sockaddr ifru_hwaddr; |
| short ifru_flags; |
| compat_int_t ifru_ivalue; |
| compat_int_t ifru_mtu; |
| struct compat_ifmap ifru_map; |
| char ifru_slave[IFNAMSIZ]; /* Just fits the size */ |
| char ifru_newname[IFNAMSIZ]; |
| compat_caddr_t ifru_data; |
| struct compat_if_settings ifru_settings; |
| } ifr_ifru; |
| }; |
| |
| struct compat_ifconf { |
| compat_int_t ifc_len; /* size of buffer */ |
| compat_caddr_t ifcbuf; |
| }; |
| |
| struct compat_robust_list { |
| compat_uptr_t next; |
| }; |
| |
| struct compat_robust_list_head { |
| struct compat_robust_list list; |
| compat_long_t futex_offset; |
| 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_keyctl_kdf_params { |
| compat_uptr_t hashname; |
| compat_uptr_t otherinfo; |
| __u32 otherinfolen; |
| __u32 __spare[8]; |
| }; |
| |
| struct compat_statfs; |
| struct compat_statfs64; |
| struct compat_old_linux_dirent; |
| struct compat_linux_dirent; |
| struct linux_dirent64; |
| struct compat_msghdr; |
| struct compat_mmsghdr; |
| struct compat_sysinfo; |
| struct compat_sysctl_args; |
| struct compat_kexec_segment; |
| struct compat_mq_attr; |
| struct compat_msgbuf; |
| |
| #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) |
| |
| #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) |
| |
| long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, |
| unsigned long bitmap_size); |
| long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, |
| unsigned long bitmap_size); |
| void copy_siginfo_to_external32(struct compat_siginfo *to, |
| const struct kernel_siginfo *from); |
| int copy_siginfo_from_user32(kernel_siginfo_t *to, |
| const struct compat_siginfo __user *from); |
| int __copy_siginfo_to_user32(struct compat_siginfo __user *to, |
| const kernel_siginfo_t *from); |
| #ifndef copy_siginfo_to_user32 |
| #define copy_siginfo_to_user32 __copy_siginfo_to_user32 |
| #endif |
| int get_compat_sigevent(struct sigevent *event, |
| const struct compat_sigevent __user *u_event); |
| |
| extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); |
| |
| /* |
| * Defined inline such that size can be compile time constant, which avoids |
| * CONFIG_HARDENED_USERCOPY complaining about copies from task_struct |
| */ |
| static inline int |
| put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set, |
| unsigned int size) |
| { |
| /* size <= sizeof(compat_sigset_t) <= sizeof(sigset_t) */ |
| #ifdef __BIG_ENDIAN |
| compat_sigset_t v; |
| switch (_NSIG_WORDS) { |
| case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; |
| fallthrough; |
| case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; |
| fallthrough; |
| case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; |
| fallthrough; |
| case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; |
| } |
| return copy_to_user(compat, &v, size) ? -EFAULT : 0; |
| #else |
| return copy_to_user(compat, set, size) ? -EFAULT : 0; |
| #endif |
| } |
| |
| #ifdef CONFIG_CPU_BIG_ENDIAN |
| #define unsafe_put_compat_sigset(compat, set, label) do { \ |
| compat_sigset_t __user *__c = compat; \ |
| const sigset_t *__s = set; \ |
| \ |
| switch (_NSIG_WORDS) { \ |
| case 4: \ |
| unsafe_put_user(__s->sig[3] >> 32, &__c->sig[7], label); \ |
| unsafe_put_user(__s->sig[3], &__c->sig[6], label); \ |
| fallthrough; \ |
| case 3: \ |
| unsafe_put_user(__s->sig[2] >> 32, &__c->sig[5], label); \ |
| unsafe_put_user(__s->sig[2], &__c->sig[4], label); \ |
| fallthrough; \ |
| case 2: \ |
| unsafe_put_user(__s->sig[1] >> 32, &__c->sig[3], label); \ |
| unsafe_put_user(__s->sig[1], &__c->sig[2], label); \ |
| fallthrough; \ |
| case 1: \ |
| unsafe_put_user(__s->sig[0] >> 32, &__c->sig[1], label); \ |
| unsafe_put_user(__s->sig[0], &__c->sig[0], label); \ |
| } \ |
| } while (0) |
| #else |
| #define unsafe_put_compat_sigset(compat, set, label) do { \ |
| compat_sigset_t __user *__c = compat; \ |
| const sigset_t *__s = set; \ |
| \ |
| unsafe_copy_to_user(__c, __s, sizeof(*__c), label); \ |
| } while (0) |
| #endif |
| |
| extern int compat_ptrace_request(struct task_struct *child, |
| compat_long_t request, |
| compat_ulong_t addr, compat_ulong_t data); |
| |
| extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, |
| compat_ulong_t addr, compat_ulong_t data); |
| |
| struct epoll_event; /* fortunately, this one is fixed-layout */ |
| |
| extern void __user *compat_alloc_user_space(unsigned long len); |
| |
| int compat_restore_altstack(const compat_stack_t __user *uss); |
| int __compat_save_altstack(compat_stack_t __user *, unsigned long); |
| #define unsafe_compat_save_altstack(uss, sp, label) do { \ |
| compat_stack_t __user *__uss = uss; \ |
| struct task_struct *t = current; \ |
| unsafe_put_user(ptr_to_compat((void __user *)t->sas_ss_sp), \ |
| &__uss->ss_sp, label); \ |
| unsafe_put_user(t->sas_ss_flags, &__uss->ss_flags, label); \ |
| unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \ |
| if (t->sas_ss_flags & SS_AUTODISARM) \ |
| sas_ss_reset(t); \ |
| } while (0); |
| |
| /* |
| * These syscall function prototypes are kept in the same order as |
| * include/uapi/asm-generic/unistd.h. Deprecated or obsolete system calls |
| * go below. |
| * |
| * 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); |
| asmlinkage long compat_sys_io_pgetevents(compat_aio_context_t ctx_id, |
| compat_long_t min_nr, |
| compat_long_t nr, |
| struct io_event __user *events, |
| struct old_timespec32 __user *timeout, |
| const struct __compat_aio_sigset __user *usig); |
| asmlinkage long compat_sys_io_pgetevents_time64(compat_aio_context_t ctx_id, |
| compat_long_t min_nr, |
| compat_long_t nr, |
| struct io_event __user *events, |
| struct __kernel_timespec __user *timeout, |
| const struct __compat_aio_sigset __user *usig); |
| |
| /* fs/cookies.c */ |
| asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); |
| |
| /* fs/eventpoll.c */ |
| asmlinkage long compat_sys_epoll_pwait(int epfd, |
| struct epoll_event __user *events, |
| int maxevents, int timeout, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize); |
| asmlinkage long compat_sys_epoll_pwait2(int epfd, |
| struct epoll_event __user *events, |
| int maxevents, |
| const struct __kernel_timespec __user *timeout, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize); |
| |
| /* fs/fcntl.c */ |
| asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, |
| compat_ulong_t arg); |
| asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, |
| compat_ulong_t arg); |
| |
| /* fs/ioctl.c */ |
| asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, |
| compat_ulong_t arg); |
| |
| /* fs/open.c */ |
| asmlinkage long compat_sys_statfs(const char __user *pathname, |
| struct compat_statfs __user *buf); |
| asmlinkage long compat_sys_statfs64(const char __user *pathname, |
| compat_size_t sz, |
| struct compat_statfs64 __user *buf); |
| asmlinkage long compat_sys_fstatfs(unsigned int fd, |
| struct compat_statfs __user *buf); |
| asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
| struct compat_statfs64 __user *buf); |
| asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); |
| asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); |
| /* No generic prototype for truncate64, ftruncate64, fallocate */ |
| asmlinkage long compat_sys_openat(int dfd, const char __user *filename, |
| int flags, umode_t mode); |
| |
| /* fs/readdir.c */ |
| asmlinkage long compat_sys_getdents(unsigned int fd, |
| struct compat_linux_dirent __user *dirent, |
| unsigned int count); |
| |
| /* fs/read_write.c */ |
| asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); |
| /* No generic prototype for pread64 and pwrite64 */ |
| asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, |
| const struct iovec __user *vec, |
| compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
| asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, |
| const struct iovec __user *vec, |
| compat_ulong_t vlen, u32 pos_low, u32 pos_high); |
| #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 |
| asmlinkage long compat_sys_preadv64(unsigned long fd, |
| const struct iovec __user *vec, |
| unsigned long vlen, loff_t pos); |
| #endif |
| |
| #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 |
| asmlinkage long compat_sys_pwritev64(unsigned long fd, |
| const struct iovec __user *vec, |
| unsigned long vlen, loff_t pos); |
| #endif |
| |
| /* fs/sendfile.c */ |
| asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, |
| compat_off_t __user *offset, compat_size_t count); |
| asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, |
| compat_loff_t __user *offset, compat_size_t count); |
| |
| /* fs/select.c */ |
| asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp, |
| compat_ulong_t __user *outp, |
| compat_ulong_t __user *exp, |
| struct old_timespec32 __user *tsp, |
| void __user *sig); |
| asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp, |
| compat_ulong_t __user *outp, |
| compat_ulong_t __user *exp, |
| struct __kernel_timespec __user *tsp, |
| void __user *sig); |
| asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds, |
| unsigned int nfds, |
| struct old_timespec32 __user *tsp, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize); |
| asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds, |
| unsigned int nfds, |
| struct __kernel_timespec __user *tsp, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize); |
| |
| /* fs/signalfd.c */ |
| asmlinkage long compat_sys_signalfd4(int ufd, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize, int flags); |
| |
| /* fs/stat.c */ |
| asmlinkage long compat_sys_newfstatat(unsigned int dfd, |
| const char __user *filename, |
| struct compat_stat __user *statbuf, |
| int flag); |
| asmlinkage long compat_sys_newfstat(unsigned int fd, |
| struct compat_stat __user *statbuf); |
| |
| /* fs/sync.c: No generic prototype for sync_file_range and sync_file_range2 */ |
| |
| /* kernel/exit.c */ |
| asmlinkage long compat_sys_waitid(int, compat_pid_t, |
| struct compat_siginfo __user *, int, |
| struct compat_rusage __user *); |
| |
| |
| |
| /* kernel/futex.c */ |
| asmlinkage long |
| compat_sys_set_robust_list(struct compat_robust_list_head __user *head, |
| compat_size_t len); |
| asmlinkage long |
| compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, |
| compat_size_t __user *len_ptr); |
| |
| /* kernel/itimer.c */ |
| asmlinkage long compat_sys_getitimer(int which, |
| struct old_itimerval32 __user *it); |
| asmlinkage long compat_sys_setitimer(int which, |
| struct old_itimerval32 __user *in, |
| struct old_itimerval32 __user *out); |
| |
| /* kernel/kexec.c */ |
| asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, |
| compat_ulong_t nr_segments, |
| struct compat_kexec_segment __user *, |
| compat_ulong_t flags); |
| |
| /* kernel/posix-timers.c */ |
| asmlinkage long compat_sys_timer_create(clockid_t which_clock, |
| struct compat_sigevent __user *timer_event_spec, |
| timer_t __user *created_timer_id); |
| |
| /* kernel/ptrace.c */ |
| asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, |
| compat_long_t addr, compat_long_t data); |
| |
| /* kernel/sched/core.c */ |
| asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, |
| unsigned int len, |
| compat_ulong_t __user *user_mask_ptr); |
| asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, |
| unsigned int len, |
| compat_ulong_t __user *user_mask_ptr); |
| |
| /* kernel/signal.c */ |
| asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, |
| compat_stack_t __user *uoss_ptr); |
| asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, |
| 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_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); |
| asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese, |
| struct compat_siginfo __user *uinfo, |
| struct old_timespec32 __user *uts, compat_size_t sigsetsize); |
| asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese, |
| struct compat_siginfo __user *uinfo, |
| struct __kernel_timespec __user *uts, compat_size_t sigsetsize); |
| asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, |
| struct compat_siginfo __user *uinfo); |
| /* No generic prototype for rt_sigreturn */ |
| |
| /* kernel/sys.c */ |
| asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); |
| asmlinkage long compat_sys_getrlimit(unsigned int resource, |
| struct compat_rlimit __user *rlim); |
| asmlinkage long compat_sys_setrlimit(unsigned int resource, |
| struct compat_rlimit __user *rlim); |
| asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); |
| |
| /* kernel/time.c */ |
| asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, |
| struct timezone __user *tz); |
| asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, |
| struct timezone __user *tz); |
| |
| /* kernel/timer.c */ |
| asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); |
| |
| /* ipc/mqueue.c */ |
| asmlinkage long compat_sys_mq_open(const char __user *u_name, |
| int oflag, compat_mode_t mode, |
| struct compat_mq_attr __user *u_attr); |
| asmlinkage long compat_sys_mq_notify(mqd_t mqdes, |
| const struct compat_sigevent __user *u_notification); |
| asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, |
| const struct compat_mq_attr __user *u_mqstat, |
| struct compat_mq_attr __user *u_omqstat); |
| |
| /* ipc/msg.c */ |
| asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); |
| asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, |
| compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); |
| asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, |
| compat_ssize_t msgsz, int msgflg); |
| |
| /* ipc/sem.c */ |
| asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); |
| |
| /* ipc/shm.c */ |
| asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); |
| asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); |
| |
| /* net/socket.c */ |
| asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, |
| unsigned flags, struct sockaddr __user *addr, |
| int __user *addrlen); |
| asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, |
| unsigned flags); |
| asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, |
| unsigned int flags); |
| |
| /* mm/filemap.c: No generic prototype for readahead */ |
| |
| /* security/keys/keyctl.c */ |
| asmlinkage long compat_sys_keyctl(u32 option, |
| u32 arg2, u32 arg3, u32 arg4, u32 arg5); |
| |
| /* arch/example/kernel/sys_example.c */ |
| asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, |
| const compat_uptr_t __user *envp); |
| |
| /* mm/fadvise.c: No generic prototype for fadvise64_64 */ |
| |
| /* mm/, CONFIG_MMU only */ |
| asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, |
| compat_ulong_t mode, |
| compat_ulong_t __user *nmask, |
| compat_ulong_t maxnode, compat_ulong_t flags); |
| asmlinkage long compat_sys_get_mempolicy(int __user *policy, |
| compat_ulong_t __user *nmask, |
| compat_ulong_t maxnode, |
| compat_ulong_t addr, |
| compat_ulong_t flags); |
| asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, |
| compat_ulong_t maxnode); |
| asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, |
| compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, |
| const compat_ulong_t __user *new_nodes); |
| asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, |
| __u32 __user *pages, |
| const int __user *nodes, |
| int __user *status, |
| int flags); |
| |
| asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, |
| compat_pid_t pid, int sig, |
| struct compat_siginfo __user *uinfo); |
| asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg, |
| unsigned vlen, unsigned int flags, |
| struct __kernel_timespec __user *timeout); |
| asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg, |
| unsigned vlen, unsigned int flags, |
| struct old_timespec32 __user *timeout); |
| asmlinkage long compat_sys_wait4(compat_pid_t pid, |
| compat_uint_t __user *stat_addr, int options, |
| struct compat_rusage __user *ru); |
| asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, |
| int, const char __user *); |
| asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, |
| struct file_handle __user *handle, |
| int flags); |
| asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, |
| unsigned vlen, unsigned int flags); |
| asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, |
| const compat_uptr_t __user *argv, |
| const compat_uptr_t __user *envp, int flags); |
| asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, |
| const struct iovec __user *vec, |
| compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
| asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, |
| const struct iovec __user *vec, |
| compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); |
| #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 |
| asmlinkage long compat_sys_preadv64v2(unsigned long fd, |
| const struct iovec __user *vec, |
| unsigned long vlen, loff_t pos, rwf_t flags); |
| #endif |
| |
| #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 |
| asmlinkage long compat_sys_pwritev64v2(unsigned long fd, |
| const struct iovec __user *vec, |
| unsigned long vlen, loff_t pos, rwf_t flags); |
| #endif |
| |
| |
| /* |
| * Deprecated system calls which are still defined in |
| * include/uapi/asm-generic/unistd.h and wanted by >= 1 arch |
| */ |
| |
| /* __ARCH_WANT_SYSCALL_NO_AT */ |
| asmlinkage long compat_sys_open(const char __user *filename, int flags, |
| umode_t mode); |
| |
| /* __ARCH_WANT_SYSCALL_NO_FLAGS */ |
| asmlinkage long compat_sys_signalfd(int ufd, |
| const compat_sigset_t __user *sigmask, |
| compat_size_t sigsetsize); |
| |
| /* __ARCH_WANT_SYSCALL_OFF_T */ |
| asmlinkage long compat_sys_newstat(const char __user *filename, |
| struct compat_stat __user *statbuf); |
| asmlinkage long compat_sys_newlstat(const char __user *filename, |
| struct compat_stat __user *statbuf); |
| |
| /* __ARCH_WANT_SYSCALL_DEPRECATED */ |
| asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, |
| compat_ulong_t __user *outp, compat_ulong_t __user *exp, |
| struct old_timeval32 __user *tvp); |
| asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); |
| asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, |
| unsigned flags); |
| |
| /* obsolete: fs/readdir.c */ |
| asmlinkage long compat_sys_old_readdir(unsigned int fd, |
| struct compat_old_linux_dirent __user *, |
| unsigned int count); |
| |
| /* obsolete: fs/select.c */ |
| asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); |
| |
| /* obsolete: ipc */ |
| asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); |
| |
| /* obsolete: kernel/signal.c */ |
| #ifdef __ARCH_WANT_SYS_SIGPENDING |
| asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); |
| #endif |
| |
| #ifdef __ARCH_WANT_SYS_SIGPROCMASK |
| asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, |
| compat_old_sigset_t __user *oset); |
| #endif |
| #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 |
| |
| /* 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 |
| * "am I a compat task?" are the same question. For architectures on which |
| * they aren't the same question, arch code can override in_compat_syscall. |
| */ |
| |
| #ifndef in_compat_syscall |
| static inline bool in_compat_syscall(void) { return is_compat_task(); } |
| #endif |
| |
| /** |
| * ns_to_old_timeval32 - Compat version of ns_to_timeval |
| * @nsec: the nanoseconds value to be converted |
| * |
| * Returns the old_timeval32 representation of the nsec parameter. |
| */ |
| static inline struct old_timeval32 ns_to_old_timeval32(s64 nsec) |
| { |
| struct __kernel_old_timeval tv; |
| struct old_timeval32 ctv; |
| |
| tv = ns_to_kernel_old_timeval(nsec); |
| ctv.tv_sec = tv.tv_sec; |
| ctv.tv_usec = tv.tv_usec; |
| |
| return ctv; |
| } |
| |
| /* |
| * Kernel code should not call compat syscalls (i.e., compat_sys_xyzyyz()) |
| * directly. Instead, use one of the functions which work equivalently, such |
| * as the kcompat_sys_xyzyyz() functions prototyped below. |
| */ |
| |
| int kcompat_sys_statfs64(const char __user * pathname, compat_size_t sz, |
| struct compat_statfs64 __user * buf); |
| int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz, |
| struct compat_statfs64 __user * buf); |
| |
| #else /* !CONFIG_COMPAT */ |
| |
| #define is_compat_task() (0) |
| /* Ensure no one redefines in_compat_syscall() under !CONFIG_COMPAT */ |
| #define in_compat_syscall in_compat_syscall |
| static inline bool in_compat_syscall(void) { return false; } |
| |
| #endif /* CONFIG_COMPAT */ |
| |
| /* |
| * Some legacy ABIs like the i386 one use less than natural alignment for 64-bit |
| * types, and will need special compat treatment for that. Most architectures |
| * don't need that special handling even for compat syscalls. |
| */ |
| #ifndef compat_need_64bit_alignment_fixup |
| #define compat_need_64bit_alignment_fixup() false |
| #endif |
| |
| /* |
| * A pointer passed in from user mode. This should not |
| * be used for syscall parameters, just declare them |
| * as pointers because the syscall entry code will have |
| * appropriately converted them already. |
| */ |
| #ifndef compat_ptr |
| static inline void __user *compat_ptr(compat_uptr_t uptr) |
| { |
| return (void __user *)(unsigned long)uptr; |
| } |
| #endif |
| |
| static inline compat_uptr_t ptr_to_compat(void __user *uptr) |
| { |
| return (u32)(unsigned long)uptr; |
| } |
| |
| #endif /* _LINUX_COMPAT_H */ |