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- /* 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>
- #include <asm/siginfo.h>
- #include <asm/signal.h>
- #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__)) \
- __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;
- };
- #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)
- #ifndef compat_sigset_t
- typedef struct {
- compat_sigset_word sig[_COMPAT_NSIG_WORDS];
- } compat_sigset_t;
- #endif
- 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. */
- #define __COMPAT_ADDR_BND_PKEY_PAD (__alignof__(compat_uptr_t) < sizeof(short) ? \
- sizeof(short) : __alignof__(compat_uptr_t))
- union {
- /* used on alpha and sparc */
- int _trapno; /* TRAP # which caused the signal */
- /*
- * 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;
- /* used when si_code=TRAP_PERF */
- struct {
- compat_ulong_t _data;
- u32 _type;
- u32 _flags;
- } _perf;
- };
- } _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;
- };
- #ifdef __ARCH_NEED_COMPAT_FLOCK64_PACKED
- #define __ARCH_COMPAT_FLOCK64_PACK __attribute__((packed))
- #else
- #define __ARCH_COMPAT_FLOCK64_PACK
- #endif
- struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- #ifdef __ARCH_COMPAT_FLOCK_EXTRA_SYSID
- __ARCH_COMPAT_FLOCK_EXTRA_SYSID
- #endif
- compat_pid_t l_pid;
- #ifdef __ARCH_COMPAT_FLOCK_PAD
- __ARCH_COMPAT_FLOCK_PAD
- #endif
- };
- struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
- #ifdef __ARCH_COMPAT_FLOCK64_PAD
- __ARCH_COMPAT_FLOCK64_PAD
- #endif
- } __ARCH_COMPAT_FLOCK64_PACK;
- 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_stat;
- 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;
- 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) */
- #if defined(__BIG_ENDIAN) && defined(CONFIG_64BIT)
- 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)
- #define unsafe_get_compat_sigset(set, compat, label) do { \
- const compat_sigset_t __user *__c = compat; \
- compat_sigset_word hi, lo; \
- sigset_t *__s = set; \
- \
- switch (_NSIG_WORDS) { \
- case 4: \
- unsafe_get_user(lo, &__c->sig[7], label); \
- unsafe_get_user(hi, &__c->sig[6], label); \
- __s->sig[3] = hi | (((long)lo) << 32); \
- fallthrough; \
- case 3: \
- unsafe_get_user(lo, &__c->sig[5], label); \
- unsafe_get_user(hi, &__c->sig[4], label); \
- __s->sig[2] = hi | (((long)lo) << 32); \
- fallthrough; \
- case 2: \
- unsafe_get_user(lo, &__c->sig[3], label); \
- unsafe_get_user(hi, &__c->sig[2], label); \
- __s->sig[1] = hi | (((long)lo) << 32); \
- fallthrough; \
- case 1: \
- unsafe_get_user(lo, &__c->sig[1], label); \
- unsafe_get_user(hi, &__c->sig[0], label); \
- __s->sig[0] = hi | (((long)lo) << 32); \
- } \
- } 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)
- #define unsafe_get_compat_sigset(set, compat, label) do { \
- const compat_sigset_t __user *__c = compat; \
- sigset_t *__s = set; \
- \
- unsafe_copy_from_user(__s, __c, 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 */
- 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); \
- } 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_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);
- #ifdef __ARCH_WANT_COMPAT_TRUNCATE64
- asmlinkage long compat_sys_truncate64(const char __user *pathname, compat_arg_u64(len));
- #endif
- #ifdef __ARCH_WANT_COMPAT_FTRUNCATE64
- asmlinkage long compat_sys_ftruncate64(unsigned int fd, compat_arg_u64(len));
- #endif
- #ifdef __ARCH_WANT_COMPAT_FALLOCATE
- asmlinkage long compat_sys_fallocate(int fd, int mode, compat_arg_u64(offset),
- compat_arg_u64(len));
- #endif
- #ifdef __ARCH_WANT_COMPAT_PREAD64
- asmlinkage long compat_sys_pread64(unsigned int fd, char __user *buf, size_t count,
- compat_arg_u64(pos));
- #endif
- #ifdef __ARCH_WANT_COMPAT_PWRITE64
- asmlinkage long compat_sys_pwrite64(unsigned int fd, const char __user *buf, size_t count,
- compat_arg_u64(pos));
- #endif
- #ifdef __ARCH_WANT_COMPAT_SYNC_FILE_RANGE
- asmlinkage long compat_sys_sync_file_range(int fd, compat_arg_u64(pos),
- compat_arg_u64(nbytes), unsigned int flags);
- #endif
- #ifdef __ARCH_WANT_COMPAT_FADVISE64_64
- asmlinkage long compat_sys_fadvise64_64(int fd, compat_arg_u64(pos),
- compat_arg_u64(len), int advice);
- #endif
- #ifdef __ARCH_WANT_COMPAT_READAHEAD
- asmlinkage long compat_sys_readahead(int fd, compat_arg_u64(offset), size_t count);
- #endif
- #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
- /**
- * 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);
- #ifdef CONFIG_COMPAT
- /*
- * 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
- #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 */
- #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);
- /*
- * 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 */
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