Linux之系统调用问题
作者:嵌入式Linux系统开发
这篇文章主要介绍了Linux之系统调用问题,具有很好的参考价值,希望对大家有所帮助,如有错误或未考虑完全的地方,望不吝赐教
Linux系统调用
asmlinkage限定词
这是一个编译指令,通知编译器仅从栈中提取该函数的参数。
函数返回long
为了保证 32 位和 64 位系统的兼容,系统调用在用户空间和内核空间有不同的返回值类型,在用户空间为 int,在内核空间为 long。
note:假设系统调用在内核空间定义为 sys_ioctl,那么该系统调用的用户空间接口为 ioctl
Linux kernel-5.18.8 有 440 个系统调用。
/include/linux/syscalls.h
/* * These syscall function prototypes are kept in the same order as * include/uapi/asm-generic/unistd.h. Architecture specific entries go below, * followed by deprecated or obsolete system calls. * * Please note that these prototypes here are only provided for information * purposes, for static analysis, and for linking from the syscall table. * These functions should not be called elsewhere from kernel code. * * As the syscall calling convention may be different from the default * for architectures overriding the syscall calling convention, do not * include the prototypes if CONFIG_ARCH_HAS_SYSCALL_WRAPPER is enabled. */ #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx); asmlinkage long sys_io_destroy(aio_context_t ctx); asmlinkage long sys_io_submit(aio_context_t, long, struct iocb __user * __user *); asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb, struct io_event __user *result); asmlinkage long sys_io_getevents(aio_context_t ctx_id, long min_nr, long nr, struct io_event __user *events, struct __kernel_timespec __user *timeout); asmlinkage long sys_io_getevents_time32(__u32 ctx_id, __s32 min_nr, __s32 nr, struct io_event __user *events, struct old_timespec32 __user *timeout); asmlinkage long sys_io_pgetevents(aio_context_t ctx_id, long min_nr, long nr, struct io_event __user *events, struct __kernel_timespec __user *timeout, const struct __aio_sigset *sig); asmlinkage long sys_io_pgetevents_time32(aio_context_t ctx_id, long min_nr, long nr, struct io_event __user *events, struct old_timespec32 __user *timeout, const struct __aio_sigset *sig); asmlinkage long sys_io_uring_setup(u32 entries, struct io_uring_params __user *p); asmlinkage long sys_io_uring_enter(unsigned int fd, u32 to_submit, u32 min_complete, u32 flags, const void __user *argp, size_t argsz); asmlinkage long sys_io_uring_register(unsigned int fd, unsigned int op, void __user *arg, unsigned int nr_args); /* fs/xattr.c */ asmlinkage long sys_setxattr(const char __user *path, const char __user *name, const void __user *value, size_t size, int flags); asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name, const void __user *value, size_t size, int flags); asmlinkage long sys_fsetxattr(int fd, const char __user *name, const void __user *value, size_t size, int flags); asmlinkage long sys_getxattr(const char __user *path, const char __user *name, void __user *value, size_t size); asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name, void __user *value, size_t size); asmlinkage long sys_fgetxattr(int fd, const char __user *name, void __user *value, size_t size); asmlinkage long sys_listxattr(const char __user *path, char __user *list, size_t size); asmlinkage long sys_llistxattr(const char __user *path, char __user *list, size_t size); asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size); asmlinkage long sys_removexattr(const char __user *path, const char __user *name); asmlinkage long sys_lremovexattr(const char __user *path, const char __user *name); asmlinkage long sys_fremovexattr(int fd, const char __user *name); /* fs/dcache.c */ asmlinkage long sys_getcwd(char __user *buf, unsigned long size); /* fs/cookies.c */ asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len); /* fs/eventfd.c */ asmlinkage long sys_eventfd2(unsigned int count, int flags); /* fs/eventpoll.c */ asmlinkage long sys_epoll_create1(int flags); asmlinkage long sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event __user *event); asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, int maxevents, int timeout, const sigset_t __user *sigmask, size_t sigsetsize); asmlinkage long sys_epoll_pwait2(int epfd, struct epoll_event __user *events, int maxevents, const struct __kernel_timespec __user *timeout, const sigset_t __user *sigmask, size_t sigsetsize); /* fs/fcntl.c */ asmlinkage long sys_dup(unsigned int fildes); asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags); asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg); #if BITS_PER_LONG == 32 asmlinkage long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg); #endif /* fs/inotify_user.c */ asmlinkage long sys_inotify_init1(int flags); asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask); asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd); /* fs/ioctl.c */ asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); /* fs/ioprio.c */ asmlinkage long sys_ioprio_set(int which, int who, int ioprio); asmlinkage long sys_ioprio_get(int which, int who); /* fs/locks.c */ asmlinkage long sys_flock(unsigned int fd, unsigned int cmd); /* fs/namei.c */ asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode, unsigned dev); asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode); asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag); asmlinkage long sys_symlinkat(const char __user * oldname, int newdfd, const char __user * newname); asmlinkage long sys_linkat(int olddfd, const char __user *oldname, int newdfd, const char __user *newname, int flags); asmlinkage long sys_renameat(int olddfd, const char __user * oldname, int newdfd, const char __user * newname); /* fs/namespace.c */ asmlinkage long sys_umount(char __user *name, int flags); asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, char __user *type, unsigned long flags, void __user *data); asmlinkage long sys_pivot_root(const char __user *new_root, const char __user *put_old); /* fs/nfsctl.c */ /* fs/open.c */ asmlinkage long sys_statfs(const char __user * path, struct statfs __user *buf); asmlinkage long sys_statfs64(const char __user *path, size_t sz, struct statfs64 __user *buf); asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf); asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz, struct statfs64 __user *buf); asmlinkage long sys_truncate(const char __user *path, long length); asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); #if BITS_PER_LONG == 32 asmlinkage long sys_truncate64(const char __user *path, loff_t length); asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length); #endif asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode); asmlinkage long sys_faccessat2(int dfd, const char __user *filename, int mode, int flags); asmlinkage long sys_chdir(const char __user *filename); asmlinkage long sys_fchdir(unsigned int fd); asmlinkage long sys_chroot(const char __user *filename); asmlinkage long sys_fchmod(unsigned int fd, umode_t mode); asmlinkage long sys_fchmodat(int dfd, const char __user * filename, umode_t mode); asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, int flag); asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group); asmlinkage long sys_openat(int dfd, const char __user *filename, int flags, umode_t mode); asmlinkage long sys_openat2(int dfd, const char __user *filename, struct open_how *how, size_t size); asmlinkage long sys_close(unsigned int fd); asmlinkage long sys_close_range(unsigned int fd, unsigned int max_fd, unsigned int flags); asmlinkage long sys_vhangup(void); /* fs/pipe.c */ asmlinkage long sys_pipe2(int __user *fildes, int flags); /* fs/quota.c */ asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special, qid_t id, void __user *addr); asmlinkage long sys_quotactl_fd(unsigned int fd, unsigned int cmd, qid_t id, void __user *addr); /* fs/readdir.c */ asmlinkage long sys_getdents64(unsigned int fd, struct linux_dirent64 __user *dirent, unsigned int count); /* fs/read_write.c */ asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, unsigned long offset_low, loff_t __user *result, unsigned int whence); asmlinkage long sys_lseek(unsigned int fd, off_t offset, unsigned int whence); asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); asmlinkage long sys_write(unsigned int fd, const char __user *buf, size_t count); asmlinkage long sys_readv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen); asmlinkage long sys_writev(unsigned long fd, const struct iovec __user *vec, unsigned long vlen); asmlinkage long sys_pread64(unsigned int fd, char __user *buf, size_t count, loff_t pos); asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf, size_t count, loff_t pos); asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen, unsigned long pos_l, unsigned long pos_h); asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec, unsigned long vlen, unsigned long pos_l, unsigned long pos_h); /* fs/sendfile.c */ asmlinkage long sys_sendfile64(int out_fd, int in_fd, loff_t __user *offset, size_t count); /* fs/select.c */ asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *, fd_set __user *, struct __kernel_timespec __user *, void __user *); asmlinkage long sys_pselect6_time32(int, fd_set __user *, fd_set __user *, fd_set __user *, struct old_timespec32 __user *, void __user *); asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int, struct __kernel_timespec __user *, const sigset_t __user *, size_t); asmlinkage long sys_ppoll_time32(struct pollfd __user *, unsigned int, struct old_timespec32 __user *, const sigset_t __user *, size_t); /* fs/signalfd.c */ asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags); /* fs/splice.c */ asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov, unsigned long nr_segs, unsigned int flags); asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, size_t len, unsigned int flags); asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); /* fs/stat.c */ asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf, int bufsiz); asmlinkage long sys_newfstatat(int dfd, const char __user *filename, struct stat __user *statbuf, int flag); asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); asmlinkage long sys_fstatat64(int dfd, const char __user *filename, struct stat64 __user *statbuf, int flag); #endif /* fs/sync.c */ asmlinkage long sys_sync(void); asmlinkage long sys_fsync(unsigned int fd); asmlinkage long sys_fdatasync(unsigned int fd); asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, loff_t offset, loff_t nbytes); asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, unsigned int flags); /* fs/timerfd.c */ asmlinkage long sys_timerfd_create(int clockid, int flags); asmlinkage long sys_timerfd_settime(int ufd, int flags, const struct __kernel_itimerspec __user *utmr, struct __kernel_itimerspec __user *otmr); asmlinkage long sys_timerfd_gettime(int ufd, struct __kernel_itimerspec __user *otmr); asmlinkage long sys_timerfd_gettime32(int ufd, struct old_itimerspec32 __user *otmr); asmlinkage long sys_timerfd_settime32(int ufd, int flags, const struct old_itimerspec32 __user *utmr, struct old_itimerspec32 __user *otmr); /* fs/utimes.c */ asmlinkage long sys_utimensat(int dfd, const char __user *filename, struct __kernel_timespec __user *utimes, int flags); asmlinkage long sys_utimensat_time32(unsigned int dfd, const char __user *filename, struct old_timespec32 __user *t, int flags); /* kernel/acct.c */ asmlinkage long sys_acct(const char __user *name); /* kernel/capability.c */ asmlinkage long sys_capget(cap_user_header_t header, cap_user_data_t dataptr); asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data); /* kernel/exec_domain.c */ asmlinkage long sys_personality(unsigned int personality); /* kernel/exit.c */ asmlinkage long sys_exit(int error_code); asmlinkage long sys_exit_group(int error_code); asmlinkage long sys_waitid(int which, pid_t pid, struct siginfo __user *infop, int options, struct rusage __user *ru); /* kernel/fork.c */ asmlinkage long sys_set_tid_address(int __user *tidptr); asmlinkage long sys_unshare(unsigned long unshare_flags); /* kernel/futex/syscalls.c */ asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, const struct __kernel_timespec __user *utime, u32 __user *uaddr2, u32 val3); asmlinkage long sys_futex_time32(u32 __user *uaddr, int op, u32 val, const struct old_timespec32 __user *utime, u32 __user *uaddr2, u32 val3); asmlinkage long sys_get_robust_list(int pid, struct robust_list_head __user * __user *head_ptr, size_t __user *len_ptr); asmlinkage long sys_set_robust_list(struct robust_list_head __user *head, size_t len); asmlinkage long sys_futex_waitv(struct futex_waitv *waiters, unsigned int nr_futexes, unsigned int flags, struct __kernel_timespec __user *timeout, clockid_t clockid); /* kernel/hrtimer.c */ asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp, struct __kernel_timespec __user *rmtp); asmlinkage long sys_nanosleep_time32(struct old_timespec32 __user *rqtp, struct old_timespec32 __user *rmtp); /* kernel/itimer.c */ asmlinkage long sys_getitimer(int which, struct __kernel_old_itimerval __user *value); asmlinkage long sys_setitimer(int which, struct __kernel_old_itimerval __user *value, struct __kernel_old_itimerval __user *ovalue); /* kernel/kexec.c */ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, struct kexec_segment __user *segments, unsigned long flags); /* kernel/module.c */ asmlinkage long sys_init_module(void __user *umod, unsigned long len, const char __user *uargs); asmlinkage long sys_delete_module(const char __user *name_user, unsigned int flags); /* kernel/posix-timers.c */ asmlinkage long sys_timer_create(clockid_t which_clock, struct sigevent __user *timer_event_spec, timer_t __user * created_timer_id); asmlinkage long sys_timer_gettime(timer_t timer_id, struct __kernel_itimerspec __user *setting); asmlinkage long sys_timer_getoverrun(timer_t timer_id); asmlinkage long sys_timer_settime(timer_t timer_id, int flags, const struct __kernel_itimerspec __user *new_setting, struct __kernel_itimerspec __user *old_setting); asmlinkage long sys_timer_delete(timer_t timer_id); asmlinkage long sys_clock_settime(clockid_t which_clock, const struct __kernel_timespec __user *tp); asmlinkage long sys_clock_gettime(clockid_t which_clock, struct __kernel_timespec __user *tp); asmlinkage long sys_clock_getres(clockid_t which_clock, struct __kernel_timespec __user *tp); asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, const struct __kernel_timespec __user *rqtp, struct __kernel_timespec __user *rmtp); asmlinkage long sys_timer_gettime32(timer_t timer_id, struct old_itimerspec32 __user *setting); asmlinkage long sys_timer_settime32(timer_t timer_id, int flags, struct old_itimerspec32 __user *new, struct old_itimerspec32 __user *old); asmlinkage long sys_clock_settime32(clockid_t which_clock, struct old_timespec32 __user *tp); asmlinkage long sys_clock_gettime32(clockid_t which_clock, struct old_timespec32 __user *tp); asmlinkage long sys_clock_getres_time32(clockid_t which_clock, struct old_timespec32 __user *tp); asmlinkage long sys_clock_nanosleep_time32(clockid_t which_clock, int flags, struct old_timespec32 __user *rqtp, struct old_timespec32 __user *rmtp); /* kernel/printk.c */ asmlinkage long sys_syslog(int type, char __user *buf, int len); /* kernel/ptrace.c */ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, unsigned long data); /* kernel/sched/core.c */ asmlinkage long sys_sched_setparam(pid_t pid, struct sched_param __user *param); asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param); asmlinkage long sys_sched_getscheduler(pid_t pid); asmlinkage long sys_sched_getparam(pid_t pid, struct sched_param __user *param); asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len, unsigned long __user *user_mask_ptr); asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len, unsigned long __user *user_mask_ptr); asmlinkage long sys_sched_yield(void); asmlinkage long sys_sched_get_priority_max(int policy); asmlinkage long sys_sched_get_priority_min(int policy); asmlinkage long sys_sched_rr_get_interval(pid_t pid, struct __kernel_timespec __user *interval); asmlinkage long sys_sched_rr_get_interval_time32(pid_t pid, struct old_timespec32 __user *interval); /* kernel/signal.c */ asmlinkage long sys_restart_syscall(void); asmlinkage long sys_kill(pid_t pid, int sig); asmlinkage long sys_tkill(pid_t pid, int sig); asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig); asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, struct sigaltstack __user *uoss); asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); #ifndef CONFIG_ODD_RT_SIGACTION asmlinkage long sys_rt_sigaction(int, const struct sigaction __user *, struct sigaction __user *, size_t); #endif asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, sigset_t __user *oset, size_t sigsetsize); asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese, siginfo_t __user *uinfo, const struct __kernel_timespec __user *uts, size_t sigsetsize); asmlinkage long sys_rt_sigtimedwait_time32(const sigset_t __user *uthese, siginfo_t __user *uinfo, const struct old_timespec32 __user *uts, size_t sigsetsize); asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo); /* kernel/sys.c */ asmlinkage long sys_setpriority(int which, int who, int niceval); asmlinkage long sys_getpriority(int which, int who); asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user *arg); asmlinkage long sys_setregid(gid_t rgid, gid_t egid); asmlinkage long sys_setgid(gid_t gid); asmlinkage long sys_setreuid(uid_t ruid, uid_t euid); asmlinkage long sys_setuid(uid_t uid); asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid); asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid); asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); asmlinkage long sys_setfsuid(uid_t uid); asmlinkage long sys_setfsgid(gid_t gid); asmlinkage long sys_times(struct tms __user *tbuf); asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); asmlinkage long sys_getpgid(pid_t pid); asmlinkage long sys_getsid(pid_t pid); asmlinkage long sys_setsid(void); asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); asmlinkage long sys_newuname(struct new_utsname __user *name); asmlinkage long sys_sethostname(char __user *name, int len); asmlinkage long sys_setdomainname(char __user *name, int len); asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit __user *rlim); asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit __user *rlim); asmlinkage long sys_getrusage(int who, struct rusage __user *ru); asmlinkage long sys_umask(int mask); asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache); /* kernel/time.c */ asmlinkage long sys_gettimeofday(struct __kernel_old_timeval __user *tv, struct timezone __user *tz); asmlinkage long sys_settimeofday(struct __kernel_old_timeval __user *tv, struct timezone __user *tz); asmlinkage long sys_adjtimex(struct __kernel_timex __user *txc_p); asmlinkage long sys_adjtimex_time32(struct old_timex32 __user *txc_p); /* kernel/sys.c */ asmlinkage long sys_getpid(void); asmlinkage long sys_getppid(void); asmlinkage long sys_getuid(void); asmlinkage long sys_geteuid(void); asmlinkage long sys_getgid(void); asmlinkage long sys_getegid(void); asmlinkage long sys_gettid(void); asmlinkage long sys_sysinfo(struct sysinfo __user *info); /* ipc/mqueue.c */ asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr); asmlinkage long sys_mq_unlink(const char __user *name); asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct __kernel_timespec __user *abs_timeout); asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct __kernel_timespec __user *abs_timeout); asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification); asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat); asmlinkage long sys_mq_timedreceive_time32(mqd_t mqdes, char __user *u_msg_ptr, unsigned int msg_len, unsigned int __user *u_msg_prio, const struct old_timespec32 __user *u_abs_timeout); asmlinkage long sys_mq_timedsend_time32(mqd_t mqdes, const char __user *u_msg_ptr, unsigned int msg_len, unsigned int msg_prio, const struct old_timespec32 __user *u_abs_timeout); /* ipc/msg.c */ asmlinkage long sys_msgget(key_t key, int msgflg); asmlinkage long sys_old_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf); asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, long msgtyp, int msgflg); asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, int msgflg); /* ipc/sem.c */ asmlinkage long sys_semget(key_t key, int nsems, int semflg); asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg); asmlinkage long sys_old_semctl(int semid, int semnum, int cmd, unsigned long arg); asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops, unsigned nsops, const struct __kernel_timespec __user *timeout); asmlinkage long sys_semtimedop_time32(int semid, struct sembuf __user *sops, unsigned nsops, const struct old_timespec32 __user *timeout); asmlinkage long sys_semop(int semid, struct sembuf __user *sops, unsigned nsops); /* ipc/shm.c */ asmlinkage long sys_shmget(key_t key, size_t size, int flag); asmlinkage long sys_old_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf); asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg); asmlinkage long sys_shmdt(char __user *shmaddr); /* net/socket.c */ asmlinkage long sys_socket(int, int, int); asmlinkage long sys_socketpair(int, int, int, int __user *); asmlinkage long sys_bind(int, struct sockaddr __user *, int); asmlinkage long sys_listen(int, int); asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *); asmlinkage long sys_connect(int, struct sockaddr __user *, int); asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *); asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *); asmlinkage long sys_sendto(int, void __user *, size_t, unsigned, struct sockaddr __user *, int); asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned, struct sockaddr __user *, int __user *); asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen); asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen); asmlinkage long sys_shutdown(int, int); asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags); asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags); /* mm/filemap.c */ asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); /* mm/nommu.c, also with MMU */ asmlinkage long sys_brk(unsigned long brk); asmlinkage long sys_munmap(unsigned long addr, size_t len); asmlinkage long sys_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr); /* security/keys/keyctl.c */ asmlinkage long sys_add_key(const char __user *_type, const char __user *_description, const void __user *_payload, size_t plen, key_serial_t destringid); asmlinkage long sys_request_key(const char __user *_type, const char __user *_description, const char __user *_callout_info, key_serial_t destringid); asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5); /* arch/example/kernel/sys_example.c */ #ifdef CONFIG_CLONE_BACKWARDS asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long, int __user *); #else #ifdef CONFIG_CLONE_BACKWARDS3 asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *, int __user *, unsigned long); #else asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, int __user *, unsigned long); #endif #endif asmlinkage long sys_clone3(struct clone_args __user *uargs, size_t size); asmlinkage long sys_execve(const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp); /* mm/fadvise.c */ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice); /* mm/, CONFIG_MMU only */ asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags); asmlinkage long sys_swapoff(const char __user *specialfile); asmlinkage long sys_mprotect(unsigned long start, size_t len, unsigned long prot); asmlinkage long sys_msync(unsigned long start, size_t len, int flags); asmlinkage long sys_mlock(unsigned long start, size_t len); asmlinkage long sys_munlock(unsigned long start, size_t len); asmlinkage long sys_mlockall(int flags); asmlinkage long sys_munlockall(void); asmlinkage long sys_mincore(unsigned long start, size_t len, unsigned char __user * vec); asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior); asmlinkage long sys_process_madvise(int pidfd, const struct iovec __user *vec, size_t vlen, int behavior, unsigned int flags); asmlinkage long sys_process_mrelease(int pidfd, unsigned int flags); asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size, unsigned long prot, unsigned long pgoff, unsigned long flags); asmlinkage long sys_mbind(unsigned long start, unsigned long len, unsigned long mode, const unsigned long __user *nmask, unsigned long maxnode, unsigned flags); asmlinkage long sys_get_mempolicy(int __user *policy, unsigned long __user *nmask, unsigned long maxnode, unsigned long addr, unsigned long flags); asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask, unsigned long maxnode); asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, const unsigned long __user *from, const unsigned long __user *to); asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages, const void __user * __user *pages, const int __user *nodes, int __user *status, int flags); asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t __user *uinfo); asmlinkage long sys_perf_event_open( struct perf_event_attr __user *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags); asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int); asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg, unsigned int vlen, unsigned flags, struct __kernel_timespec __user *timeout); asmlinkage long sys_recvmmsg_time32(int fd, struct mmsghdr __user *msg, unsigned int vlen, unsigned flags, struct old_timespec32 __user *timeout); asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, int options, struct rusage __user *ru); asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource, const struct rlimit64 __user *new_rlim, struct rlimit64 __user *old_rlim); asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags); asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, u64 mask, int fd, const char __user *pathname); asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name, struct file_handle __user *handle, int __user *mnt_id, int flag); asmlinkage long sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); asmlinkage long sys_clock_adjtime(clockid_t which_clock, struct __kernel_timex __user *tx); asmlinkage long sys_clock_adjtime32(clockid_t which_clock, struct old_timex32 __user *tx); asmlinkage long sys_syncfs(int fd); asmlinkage long sys_setns(int fd, int nstype); asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags); asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg, unsigned int vlen, unsigned flags); asmlinkage long sys_process_vm_readv(pid_t pid, const struct iovec __user *lvec, unsigned long liovcnt, const struct iovec __user *rvec, unsigned long riovcnt, unsigned long flags); asmlinkage long sys_process_vm_writev(pid_t pid, const struct iovec __user *lvec, unsigned long liovcnt, const struct iovec __user *rvec, unsigned long riovcnt, unsigned long flags); asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2); asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); asmlinkage long sys_sched_setattr(pid_t pid, struct sched_attr __user *attr, unsigned int flags); asmlinkage long sys_sched_getattr(pid_t pid, struct sched_attr __user *attr, unsigned int size, unsigned int flags); asmlinkage long sys_renameat2(int olddfd, const char __user *oldname, int newdfd, const char __user *newname, unsigned int flags); asmlinkage long sys_seccomp(unsigned int op, unsigned int flags, void __user *uargs); asmlinkage long sys_getrandom(char __user *buf, size_t count, unsigned int flags); asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size); asmlinkage long sys_execveat(int dfd, const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp, int flags); asmlinkage long sys_userfaultfd(int flags); asmlinkage long sys_membarrier(int cmd, unsigned int flags, int cpu_id); asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags); asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, size_t len, unsigned int flags); asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec, unsigned long vlen, unsigned long pos_l, unsigned long pos_h, rwf_t flags); asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec, unsigned long vlen, unsigned long pos_l, unsigned long pos_h, rwf_t flags); asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len, unsigned long prot, int pkey); asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val); asmlinkage long sys_pkey_free(int pkey); asmlinkage long sys_statx(int dfd, const char __user *path, unsigned flags, unsigned mask, struct statx __user *buffer); asmlinkage long sys_rseq(struct rseq __user *rseq, uint32_t rseq_len, int flags, uint32_t sig); asmlinkage long sys_open_tree(int dfd, const char __user *path, unsigned flags); asmlinkage long sys_move_mount(int from_dfd, const char __user *from_path, int to_dfd, const char __user *to_path, unsigned int ms_flags); asmlinkage long sys_mount_setattr(int dfd, const char __user *path, unsigned int flags, struct mount_attr __user *uattr, size_t usize); asmlinkage long sys_fsopen(const char __user *fs_name, unsigned int flags); asmlinkage long sys_fsconfig(int fs_fd, unsigned int cmd, const char __user *key, const void __user *value, int aux); asmlinkage long sys_fsmount(int fs_fd, unsigned int flags, unsigned int ms_flags); asmlinkage long sys_fspick(int dfd, const char __user *path, unsigned int flags); asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, siginfo_t __user *info, unsigned int flags); asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags); asmlinkage long sys_landlock_create_ruleset(const struct landlock_ruleset_attr __user *attr, size_t size, __u32 flags); asmlinkage long sys_landlock_add_rule(int ruleset_fd, enum landlock_rule_type rule_type, const void __user *rule_attr, __u32 flags); asmlinkage long sys_landlock_restrict_self(int ruleset_fd, __u32 flags); asmlinkage long sys_memfd_secret(unsigned int flags); asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len, unsigned long home_node, unsigned long flags); /* * Architecture-specific system calls */ /* arch/x86/kernel/ioport.c */ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); /* pciconfig: alpha, arm, arm64, ia64, sparc */ asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len, void __user *buf); asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len, void __user *buf); asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn); /* powerpc */ asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, __u32 __user *ustatus); asmlinkage long sys_spu_create(const char __user *name, unsigned int flags, umode_t mode, int fd); /* * 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 sys_open(const char __user *filename, int flags, umode_t mode); asmlinkage long sys_link(const char __user *oldname, const char __user *newname); asmlinkage long sys_unlink(const char __user *pathname); asmlinkage long sys_mknod(const char __user *filename, umode_t mode, unsigned dev); asmlinkage long sys_chmod(const char __user *filename, umode_t mode); asmlinkage long sys_chown(const char __user *filename, uid_t user, gid_t group); asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode); asmlinkage long sys_rmdir(const char __user *pathname); asmlinkage long sys_lchown(const char __user *filename, uid_t user, gid_t group); asmlinkage long sys_access(const char __user *filename, int mode); asmlinkage long sys_rename(const char __user *oldname, const char __user *newname); asmlinkage long sys_symlink(const char __user *old, const char __user *new); #if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64) asmlinkage long sys_stat64(const char __user *filename, struct stat64 __user *statbuf); asmlinkage long sys_lstat64(const char __user *filename, struct stat64 __user *statbuf); #endif /* __ARCH_WANT_SYSCALL_NO_FLAGS */ asmlinkage long sys_pipe(int __user *fildes); asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd); asmlinkage long sys_epoll_create(int size); asmlinkage long sys_inotify_init(void); asmlinkage long sys_eventfd(unsigned int count); asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask); /* __ARCH_WANT_SYSCALL_OFF_T */ asmlinkage long sys_sendfile(int out_fd, int in_fd, off_t __user *offset, size_t count); asmlinkage long sys_newstat(const char __user *filename, struct stat __user *statbuf); asmlinkage long sys_newlstat(const char __user *filename, struct stat __user *statbuf); asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice); /* __ARCH_WANT_SYSCALL_DEPRECATED */ asmlinkage long sys_alarm(unsigned int seconds); asmlinkage long sys_getpgrp(void); asmlinkage long sys_pause(void); asmlinkage long sys_time(__kernel_old_time_t __user *tloc); asmlinkage long sys_time32(old_time32_t __user *tloc); #ifdef __ARCH_WANT_SYS_UTIME asmlinkage long sys_utime(char __user *filename, struct utimbuf __user *times); asmlinkage long sys_utimes(char __user *filename, struct __kernel_old_timeval __user *utimes); asmlinkage long sys_futimesat(int dfd, const char __user *filename, struct __kernel_old_timeval __user *utimes); #endif asmlinkage long sys_futimesat_time32(unsigned int dfd, const char __user *filename, struct old_timeval32 __user *t); asmlinkage long sys_utime32(const char __user *filename, struct old_utimbuf32 __user *t); asmlinkage long sys_utimes_time32(const char __user *filename, struct old_timeval32 __user *t); asmlinkage long sys_creat(const char __user *pathname, umode_t mode); asmlinkage long sys_getdents(unsigned int fd, struct linux_dirent __user *dirent, unsigned int count); asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct __kernel_old_timeval __user *tvp); asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds, int timeout); asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events, int maxevents, int timeout); asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); asmlinkage long sys_vfork(void); asmlinkage long sys_recv(int, void __user *, size_t, unsigned); asmlinkage long sys_send(int, void __user *, size_t, unsigned); asmlinkage long sys_oldumount(char __user *name); asmlinkage long sys_uselib(const char __user *library); asmlinkage long sys_sysfs(int option, unsigned long arg1, unsigned long arg2); asmlinkage long sys_fork(void); /* obsolete: kernel/time/time.c */ asmlinkage long sys_stime(__kernel_old_time_t __user *tptr); asmlinkage long sys_stime32(old_time32_t __user *tptr); /* obsolete: kernel/signal.c */ asmlinkage long sys_sigpending(old_sigset_t __user *uset); asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, old_sigset_t __user *oset); #ifdef CONFIG_OLD_SIGSUSPEND asmlinkage long sys_sigsuspend(old_sigset_t mask); #endif #ifdef CONFIG_OLD_SIGSUSPEND3 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); #endif #ifdef CONFIG_OLD_SIGACTION asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, struct old_sigaction __user *); #endif asmlinkage long sys_sgetmask(void); asmlinkage long sys_ssetmask(int newmask); asmlinkage long sys_signal(int sig, __sighandler_t handler); /* obsolete: kernel/sched/core.c */ asmlinkage long sys_nice(int increment); /* obsolete: kernel/kexec_file.c */ asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd, unsigned long cmdline_len, const char __user *cmdline_ptr, unsigned long flags); /* obsolete: kernel/exit.c */ asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); /* obsolete: kernel/uid16.c */ #ifdef CONFIG_HAVE_UID16 asmlinkage long sys_chown16(const char __user *filename, old_uid_t user, old_gid_t group); asmlinkage long sys_lchown16(const char __user *filename, old_uid_t user, old_gid_t group); asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group); asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid); asmlinkage long sys_setgid16(old_gid_t gid); asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid); asmlinkage long sys_setuid16(old_uid_t uid); asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid); asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid); asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid); asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid); asmlinkage long sys_setfsuid16(old_uid_t uid); asmlinkage long sys_setfsgid16(old_gid_t gid); asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist); asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist); asmlinkage long sys_getuid16(void); asmlinkage long sys_geteuid16(void); asmlinkage long sys_getgid16(void); asmlinkage long sys_getegid16(void); #endif /* obsolete: net/socket.c */ asmlinkage long sys_socketcall(int call, unsigned long __user *args); /* obsolete: fs/stat.c */ asmlinkage long sys_stat(const char __user *filename, struct __old_kernel_stat __user *statbuf); asmlinkage long sys_lstat(const char __user *filename, struct __old_kernel_stat __user *statbuf); asmlinkage long sys_fstat(unsigned int fd, struct __old_kernel_stat __user *statbuf); asmlinkage long sys_readlink(const char __user *path, char __user *buf, int bufsiz); /* obsolete: fs/select.c */ asmlinkage long sys_old_select(struct sel_arg_struct __user *arg); /* obsolete: fs/readdir.c */ asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); /* obsolete: kernel/sys.c */ asmlinkage long sys_gethostname(char __user *name, int len); asmlinkage long sys_uname(struct old_utsname __user *); asmlinkage long sys_olduname(struct oldold_utsname __user *); #ifdef __ARCH_WANT_SYS_OLD_GETRLIMIT asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim); #endif /* obsolete: ipc */ asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, unsigned long third, void __user *ptr, long fifth); /* obsolete: mm/ */ asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff); asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg); /* * Not a real system call, but a placeholder for syscalls which are * not implemented -- see kernel/sys_ni.c */ asmlinkage long sys_ni_syscall(void); #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。