系统调用服务号 linux 2.6.32
Posted zengkefu
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系统定义符号集中声明在 /usr/src/kernels/linux-2.6.32/include/linux/syscalls.h中,
其定义在不同的文件中
eg:
asmlinkage long sys_getpid(void); 在kernel/timer.c中定义
系统调用函数getpid ----->对应的内核服务程序是sys_getpid
系统调用号表中的每一项对应系统调用表中每一项
系统调用表存储系统调用对应的内核服务程序的地址
系统调用号（号）取------->系统调用表(函数地址)---------->系统服务程序例程
[[email protected] log]# cat /usr/src/kernels/linux-2.6.32/include/linux/syscalls.h
/* * syscalls.h - Linux syscall interfaces (non-arch-specific) * * Copyright (c) 2004 Randy Dunlap * Copyright (c) 2004 Open Source Development Labs * * This file is released under the GPLv2. * See the file COPYING for more details. */ #ifndef _LINUX_SYSCALLS_H #define _LINUX_SYSCALLS_H struct epoll_event; struct iattr; struct inode; struct iocb; struct io_event; struct iovec; struct itimerspec; struct itimerval; struct kexec_segment; struct linux_dirent; struct linux_dirent64; struct list_head; struct msgbuf; struct msghdr; struct msqid_ds; struct new_utsname; struct nfsctl_arg; struct __old_kernel_stat; struct pollfd; struct rlimit; struct rusage; struct sched_param; struct semaphore; struct sembuf; struct shmid_ds; struct sockaddr; struct stat; struct stat64; struct statfs; struct statfs64; struct __sysctl_args; struct sysinfo; struct timespec; struct timeval; struct timex; struct timezone; struct tms; struct utimbuf; struct mq_attr; struct compat_stat; struct compat_timeval; struct robust_list_head; struct getcpu_cache; struct old_linux_dirent; struct perf_event_attr; #include <linux/types.h> #include <linux/aio_abi.h> #include <linux/capability.h> #include <linux/list.h> #include <linux/sem.h> #include <asm/siginfo.h> #include <asm/signal.h> #include <linux/unistd.h> #include <linux/quota.h> #include <linux/key.h> #include <trace/syscall.h> #define __SC_DECL1(t1, a1) t1 a1 #define __SC_DECL2(t2, a2, ...) t2 a2, __SC_DECL1(__VA_ARGS__) #define __SC_DECL3(t3, a3, ...) t3 a3, __SC_DECL2(__VA_ARGS__) #define __SC_DECL4(t4, a4, ...) t4 a4, __SC_DECL3(__VA_ARGS__) #define __SC_DECL5(t5, a5, ...) t5 a5, __SC_DECL4(__VA_ARGS__) #define __SC_DECL6(t6, a6, ...) t6 a6, __SC_DECL5(__VA_ARGS__) #define __SC_LONG1(t1, a1) long a1 #define __SC_LONG2(t2, a2, ...) long a2, __SC_LONG1(__VA_ARGS__) #define __SC_LONG3(t3, a3, ...) long a3, __SC_LONG2(__VA_ARGS__) #define __SC_LONG4(t4, a4, ...) long a4, __SC_LONG3(__VA_ARGS__) #define __SC_LONG5(t5, a5, ...) long a5, __SC_LONG4(__VA_ARGS__) #define __SC_LONG6(t6, a6, ...) long a6, __SC_LONG5(__VA_ARGS__) #define __SC_CAST1(t1, a1) (t1) a1 #define __SC_CAST2(t2, a2, ...) (t2) a2, __SC_CAST1(__VA_ARGS__) #define __SC_CAST3(t3, a3, ...) (t3) a3, __SC_CAST2(__VA_ARGS__) #define __SC_CAST4(t4, a4, ...) (t4) a4, __SC_CAST3(__VA_ARGS__) #define __SC_CAST5(t5, a5, ...) (t5) a5, __SC_CAST4(__VA_ARGS__) #define __SC_CAST6(t6, a6, ...) (t6) a6, __SC_CAST5(__VA_ARGS__) #define __SC_TEST(type) BUILD_BUG_ON(sizeof(type) > sizeof(long)) #define __SC_TEST1(t1, a1) __SC_TEST(t1) #define __SC_TEST2(t2, a2, ...) __SC_TEST(t2); __SC_TEST1(__VA_ARGS__) #define __SC_TEST3(t3, a3, ...) __SC_TEST(t3); __SC_TEST2(__VA_ARGS__) #define __SC_TEST4(t4, a4, ...) __SC_TEST(t4); __SC_TEST3(__VA_ARGS__) #define __SC_TEST5(t5, a5, ...) __SC_TEST(t5); __SC_TEST4(__VA_ARGS__) #define __SC_TEST6(t6, a6, ...) __SC_TEST(t6); __SC_TEST5(__VA_ARGS__) #ifdef CONFIG_EVENT_PROFILE #define TRACE_SYS_ENTER_PROFILE(sname) static int prof_sysenter_enable_##sname(void) { return reg_prof_syscall_enter("sys"#sname); } static void prof_sysenter_disable_##sname(void) { unreg_prof_syscall_enter("sys"#sname); } #define TRACE_SYS_EXIT_PROFILE(sname) static int prof_sysexit_enable_##sname(void) { return reg_prof_syscall_exit("sys"#sname); } static void prof_sysexit_disable_##sname(void) { unreg_prof_syscall_exit("sys"#sname); } #define TRACE_SYS_ENTER_PROFILE_INIT(sname) \ .profile_count = ATOMIC_INIT(-1), .profile_enable = prof_sysenter_enable_##sname, .profile_disable = prof_sysenter_disable_##sname, #define TRACE_SYS_EXIT_PROFILE_INIT(sname) \ .profile_count = ATOMIC_INIT(-1), .profile_enable = prof_sysexit_enable_##sname, .profile_disable = prof_sysexit_disable_##sname, #else #define TRACE_SYS_ENTER_PROFILE(sname) #define TRACE_SYS_ENTER_PROFILE_INIT(sname) #define TRACE_SYS_EXIT_PROFILE(sname) #define TRACE_SYS_EXIT_PROFILE_INIT(sname) #endif #ifdef CONFIG_FTRACE_SYSCALLS #define __SC_STR_ADECL1(t, a) #a #define __SC_STR_ADECL2(t, a, ...) #a, __SC_STR_ADECL1(__VA_ARGS__) #define __SC_STR_ADECL3(t, a, ...) #a, __SC_STR_ADECL2(__VA_ARGS__) #define __SC_STR_ADECL4(t, a, ...) #a, __SC_STR_ADECL3(__VA_ARGS__) #define __SC_STR_ADECL5(t, a, ...) #a, __SC_STR_ADECL4(__VA_ARGS__) #define __SC_STR_ADECL6(t, a, ...) #a, __SC_STR_ADECL5(__VA_ARGS__) #define __SC_STR_TDECL1(t, a) #t #define __SC_STR_TDECL2(t, a, ...) #t, __SC_STR_TDECL1(__VA_ARGS__) #define __SC_STR_TDECL3(t, a, ...) #t, __SC_STR_TDECL2(__VA_ARGS__) #define __SC_STR_TDECL4(t, a, ...) #t, __SC_STR_TDECL3(__VA_ARGS__) #define __SC_STR_TDECL5(t, a, ...) #t, __SC_STR_TDECL4(__VA_ARGS__) #define __SC_STR_TDECL6(t, a, ...) #t, __SC_STR_TDECL5(__VA_ARGS__) #define SYSCALL_TRACE_ENTER_EVENT(sname) static struct ftrace_event_call event_enter_##sname; struct trace_event enter_syscall_print_##sname = { .trace = print_syscall_enter, }; static int init_enter_##sname(void) { int num, id; num = syscall_name_to_nr("sys"#sname); if (num < 0) return -ENOSYS; id = register_ftrace_event(&enter_syscall_print_##sname); if (!id) return -ENODEV; event_enter_##sname.id = id; set_syscall_enter_id(num, id); INIT_LIST_HEAD(&event_enter_##sname.fields); return 0; } TRACE_SYS_ENTER_PROFILE(sname); static struct ftrace_event_call __used __attribute__((__aligned__(4))) __attribute__((section("_ftrace_events"))) event_enter_##sname = { .name = "sys_enter"#sname, .system = "syscalls", .event = &event_syscall_enter, .raw_init = init_enter_##sname, .show_format = syscall_enter_format, .define_fields = syscall_enter_define_fields, .regfunc = reg_event_syscall_enter, .unregfunc = unreg_event_syscall_enter, .data = "sys"#sname, TRACE_SYS_ENTER_PROFILE_INIT(sname) } #define SYSCALL_TRACE_EXIT_EVENT(sname) static struct ftrace_event_call event_exit_##sname; struct trace_event exit_syscall_print_##sname = { .trace = print_syscall_exit, }; static int init_exit_##sname(void) { int num, id; num = syscall_name_to_nr("sys"#sname); if (num < 0) return -ENOSYS; id = register_ftrace_event(&exit_syscall_print_##sname); if (!id) return -ENODEV; event_exit_##sname.id = id; set_syscall_exit_id(num, id); INIT_LIST_HEAD(&event_exit_##sname.fields); return 0; } TRACE_SYS_EXIT_PROFILE(sname); static struct ftrace_event_call __used __attribute__((__aligned__(4))) __attribute__((section("_ftrace_events"))) event_exit_##sname = { .name = "sys_exit"#sname, .system = "syscalls", .event = &event_syscall_exit, .raw_init = init_exit_##sname, .show_format = syscall_exit_format, .define_fields = syscall_exit_define_fields, .regfunc = reg_event_syscall_exit, .unregfunc = unreg_event_syscall_exit, .data = "sys"#sname, TRACE_SYS_EXIT_PROFILE_INIT(sname) } #define SYSCALL_METADATA(sname, nb) \ SYSCALL_TRACE_ENTER_EVENT(sname); SYSCALL_TRACE_EXIT_EVENT(sname); static const struct syscall_metadata __used __attribute__((__aligned__(4))) __attribute__((section("__syscalls_metadata"))) __syscall_meta_##sname = { .name = "sys"#sname, .nb_args = nb, .types = types_##sname, .args = args_##sname, .enter_event = &event_enter_##sname, .exit_event = &event_exit_##sname, }; #define SYSCALL_DEFINE0(sname) \ SYSCALL_TRACE_ENTER_EVENT(_##sname); SYSCALL_TRACE_EXIT_EVENT(_##sname); static const struct syscall_metadata __used __attribute__((__aligned__(4))) __attribute__((section("__syscalls_metadata"))) __syscall_meta_##sname = { .name = "sys_"#sname, .nb_args = 0, .enter_event = &event_enter__##sname, .exit_event = &event_exit__##sname, }; asmlinkage long sys_##sname(void) #else #define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void) #endif #define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) #define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) #define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) #ifdef CONFIG_PPC64 #define SYSCALL_ALIAS(alias, name) \ asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" "\t.globl ." #alias "\n\t.set ." #alias ", ." #name) #else #if defined(CONFIG_ALPHA) || defined(CONFIG_MIPS) #define SYSCALL_ALIAS(alias, name) \ asm ( #alias " = " #name "\n\t.globl " #alias) #else #define SYSCALL_ALIAS(alias, name) \ asm ("\t.globl " #alias "\n\t.set " #alias ", " #name) #endif #endif #ifdef CONFIG_FTRACE_SYSCALLS #define SYSCALL_DEFINEx(x, sname, ...) static const char *types_##sname[] = { __SC_STR_TDECL##x(__VA_ARGS__) }; static const char *args_##sname[] = { __SC_STR_ADECL##x(__VA_ARGS__) }; SYSCALL_METADATA(sname, x); __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) #else #define SYSCALL_DEFINEx(x, sname, ...) \ __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) #endif #ifdef CONFIG_HAVE_SYSCALL_WRAPPERS #define SYSCALL_DEFINE(name) static inline long SYSC_##name #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__SC_DECL##x(__VA_ARGS__)); static inline long SYSC##name(__SC_DECL##x(__VA_ARGS__)); asmlinkage long SyS##name(__SC_LONG##x(__VA_ARGS__)) { __SC_TEST##x(__VA_ARGS__); return (long) SYSC##name(__SC_CAST##x(__VA_ARGS__)); } SYSCALL_ALIAS(sys##name, SyS##name); static inline long SYSC##name(__SC_DECL##x(__VA_ARGS__)) #else /* CONFIG_HAVE_SYSCALL_WRAPPERS */ #define SYSCALL_DEFINE(name) asmlinkage long sys_##name #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__SC_DECL##x(__VA_ARGS__)) #endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */ asmlinkage long sys_time(time_t __user *tloc); asmlinkage long sys_stime(time_t __user *tptr); asmlinkage long sys_gettimeofday(struct timeval __user *tv, struct timezone __user *tz); asmlinkage long sys_settimeofday(struct timeval __user *tv, struct timezone __user *tz); asmlinkage long sys_adjtimex(struct timex __user *txc_p); asmlinkage long sys_times(struct tms __user *tbuf); asmlinkage long sys_gettid(void); asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp); asmlinkage long sys_alarm(unsigned int seconds); 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_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid); asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid); asmlinkage long sys_getpgid(pid_t pid); asmlinkage long sys_getpgrp(void); asmlinkage long sys_getsid(pid_t pid); asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist); 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_setresgid(gid_t rgid, gid_t egid, gid_t sgid); asmlinkage long sys_setfsuid(uid_t uid); asmlinkage long sys_setfsgid(gid_t gid); asmlinkage long sys_setpgid(pid_t pid, pid_t pgid); asmlinkage long sys_setsid(void); asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist); asmlinkage long sys_acct(const char __user *name); 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); asmlinkage long sys_personality(u_long personality); asmlinkage long sys_sigpending(old_sigset_t __user *set); asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, old_sigset_t __user *oset); asmlinkage long sys_getitimer(int which, struct itimerval __user *value); asmlinkage long sys_setitimer(int which, struct itimerval __user *value, struct itimerval __user *ovalue); 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 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 itimerspec __user *new_setting, struct itimerspec __user *old_setting); asmlinkage long sys_timer_delete(timer_t timer_id); asmlinkage long sys_clock_settime(clockid_t which_clock, const struct timespec __user *tp); asmlinkage long sys_clock_gettime(clockid_t which_clock, struct timespec __user *tp); asmlinkage long sys_clock_getres(clockid_t which_clock, struct timespec __user *tp); asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags, const struct timespec __user *rqtp, struct timespec __user *rmtp); asmlinkage long sys_nice(int increment); asmlinkage long sys_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param); asmlinkage long sys_sched_setparam(pid_t pid, 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 timespec __user *interval); asmlinkage long sys_setpriority(int which, int who, int niceval); asmlinkage long sys_getpriority(int which, int who); asmlinkage long sys_shutdown(int, int); asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd, void __user *arg); asmlinkage long sys_restart_syscall(void); asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments, struct kexec_segment __user *segments, unsigned long flags); asmlinkage long sys_exit(int error_code); asmlinkage long sys_exit_group(int error_code); asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr, int options, struct rusage __user *ru); asmlinkage long sys_waitid(int which, pid_t pid, struct siginfo __user *infop, int options, struct rusage __user *ru); asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options); asmlinkage long sys_set_tid_address(int __user *tidptr); asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, struct timespec __user *utime, u32 __user *uaddr2, u32 val3); 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); 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 timespec __user *uts, size_t sigsetsize); asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t __user *uinfo); asmlinkage long sys_kill(int pid, int sig); asmlinkage long sys_tgkill(int tgid, int pid, int sig); asmlinkage long sys_tkill(int pid, int sig); asmlinkage long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t __user *uinfo); asmlinkage long sys_sgetmask(void); asmlinkage long sys_ssetmask(int newmask); asmlinkage long sys_signal(int sig, __sighandler_t handler); asmlinkage long sys_pause(void); asmlinkage long sys_sync(void); asmlinkage long sys_fsync(unsigned int fd); asmlinkage long sys_fdatasync(unsigned int fd); asmlinkage long sys_bdflush(int func, long data); asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name, char __user *type, unsigned long flags, void __user *data); asmlinkage long sys_umount(char __user *name, int flags); asmlinkage long sys_oldumount(char __user *name); asmlinkage long sys_truncate(const char __user *path, long length); asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length); asmlinkage long sys_stat(char __user *filename, struct __old_kernel_stat __user *statbuf); 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_lstat(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_newstat(char __user *filename, struct stat __user *statbuf); asmlinkage long sys_newlstat(char __user *filename, struct stat __user *statbuf); asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf); asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf); #if BITS_PER_LONG == 32 asmlinkage long sys_stat64(char __user *filename, struct stat64 __user *statbuf); asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf); asmlinkage long sys_lstat64(char __user *filename, struct stat64 __user *statbuf); 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_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); asmlinkage long sys_brk(unsigned long brk); asmlinkage long sys_mprotect(unsigned long start, size_t len, unsigned long prot); asmlinkage long sys_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr); asmlinkage 以上是关于系统调用服务号 linux 2.6.32的主要内容，如果未能解决你的问题，请参考以下文章