This is some example code showing how to use the ptrace system call under Linux to trace the system calls of a child process.

ptr_inspect.c

/*
  ptr_inspect.c

  Demonstration code; shows how to trace the system calls in a child
  process with ptrace.  Only works on 64-bit x86 Linux for now, I'm
  afraid.  (Even worse, it's only tested on Linux 2.6....) 
 
  The callname() function looks clunky and machine-generated because it
  *is* clunky and machine-generated.

  I got inspiration and a starting point from this old LJ article:
    http://www.linuxjournal.com/article/6100 

  This code is in the public domain.  Share and enjoy.

  Will Benton
  Madison, 2008
*/

#include <sys/ptrace.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/user.h>

#include <syscall.h>

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

const char* callname(long call);

#if __WORDSIZE == 64
#define REG(reg) reg.orig_rax
#else
#define REG(reg) reg.orig_eax
#endif

int main(int argc, char* argv[]) {   
  pid_t child;

  if (argc == 1) {
    exit(0);
  }

  char* chargs[argc];
  int i = 0;

  while (i < argc - 1) {
    chargs[i] = argv[i+1];
    i++;
  }
  chargs[i] = NULL;

  child = fork();
  if(child == 0) {
    ptrace(PTRACE_TRACEME, 0, NULL, NULL);
    execvp(chargs[0], chargs);
  } else {
    int status;

    while(waitpid(child, &status, 0) && ! WIFEXITED(status)) {
      struct user_regs_struct regs; 
      ptrace(PTRACE_GETREGS, child, NULL, &regs);
      fprintf(stderr, "system call %s from pid %d\n", callname(REG(regs)), child);
      ptrace(PTRACE_SYSCALL, child, NULL, NULL);
    }
  }
  exit(0);
}

const char* callname(long call) {
  switch(call) {
    
#ifdef SYS__sysctl
  case SYS__sysctl : return "_sysctl";
#endif

#ifdef SYS_access
  case SYS_access : return "access";
#endif

#ifdef SYS_acct
  case SYS_acct : return "acct";
#endif

#ifdef SYS_add_key
  case SYS_add_key : return "add_key";
#endif

#ifdef SYS_adjtimex
  case SYS_adjtimex : return "adjtimex";
#endif

#ifdef SYS_afs_syscall
  case SYS_afs_syscall : return "afs_syscall";
#endif

#ifdef SYS_alarm
  case SYS_alarm : return "alarm";
#endif

#ifdef SYS_brk
  case SYS_brk : return "brk";
#endif

#ifdef SYS_capget
  case SYS_capget : return "capget";
#endif

#ifdef SYS_capset
  case SYS_capset : return "capset";
#endif

#ifdef SYS_chdir
  case SYS_chdir : return "chdir";
#endif

#ifdef SYS_chmod
  case SYS_chmod : return "chmod";
#endif

#ifdef SYS_chown
  case SYS_chown : return "chown";
#endif

#ifdef SYS_chroot
  case SYS_chroot : return "chroot";
#endif

#ifdef SYS_clock_getres
  case SYS_clock_getres : return "clock_getres";
#endif

#ifdef SYS_clock_gettime
  case SYS_clock_gettime : return "clock_gettime";
#endif

#ifdef SYS_clock_nanosleep
  case SYS_clock_nanosleep : return "clock_nanosleep";
#endif

#ifdef SYS_clock_settime
  case SYS_clock_settime : return "clock_settime";
#endif

#ifdef SYS_clone
  case SYS_clone : return "clone";
#endif

#ifdef SYS_close
  case SYS_close : return "close";
#endif

#ifdef SYS_creat
  case SYS_creat : return "creat";
#endif

#ifdef SYS_create_module
  case SYS_create_module : return "create_module";
#endif

#ifdef SYS_delete_module
  case SYS_delete_module : return "delete_module";
#endif

#ifdef SYS_dup
  case SYS_dup : return "dup";
#endif

#ifdef SYS_dup2
  case SYS_dup2 : return "dup2";
#endif

#ifdef SYS_epoll_create
  case SYS_epoll_create : return "epoll_create";
#endif

#ifdef SYS_epoll_ctl
  case SYS_epoll_ctl : return "epoll_ctl";
#endif

#ifdef SYS_epoll_pwait
  case SYS_epoll_pwait : return "epoll_pwait";
#endif

#ifdef SYS_epoll_wait
  case SYS_epoll_wait : return "epoll_wait";
#endif

#ifdef SYS_eventfd
  case SYS_eventfd : return "eventfd";
#endif

#ifdef SYS_execve
  case SYS_execve : return "execve";
#endif

#ifdef SYS_exit
  case SYS_exit : return "exit";
#endif

#ifdef SYS_exit_group
  case SYS_exit_group : return "exit_group";
#endif

#ifdef SYS_faccessat
  case SYS_faccessat : return "faccessat";
#endif

#ifdef SYS_fadvise64
  case SYS_fadvise64 : return "fadvise64";
#endif

#ifdef SYS_fallocate
  case SYS_fallocate : return "fallocate";
#endif

#ifdef SYS_fchdir
  case SYS_fchdir : return "fchdir";
#endif

#ifdef SYS_fchmod
  case SYS_fchmod : return "fchmod";
#endif

#ifdef SYS_fchmodat
  case SYS_fchmodat : return "fchmodat";
#endif

#ifdef SYS_fchown
  case SYS_fchown : return "fchown";
#endif

#ifdef SYS_fchownat
  case SYS_fchownat : return "fchownat";
#endif

#ifdef SYS_fcntl
  case SYS_fcntl : return "fcntl";
#endif

#ifdef SYS_fdatasync
  case SYS_fdatasync : return "fdatasync";
#endif

#ifdef SYS_fgetxattr
  case SYS_fgetxattr : return "fgetxattr";
#endif

#ifdef SYS_flistxattr
  case SYS_flistxattr : return "flistxattr";
#endif

#ifdef SYS_flock
  case SYS_flock : return "flock";
#endif

#ifdef SYS_fork
  case SYS_fork : return "fork";
#endif

#ifdef SYS_fremovexattr
  case SYS_fremovexattr : return "fremovexattr";
#endif

#ifdef SYS_fsetxattr
  case SYS_fsetxattr : return "fsetxattr";
#endif

#ifdef SYS_fstat
  case SYS_fstat : return "fstat";
#endif

#ifdef SYS_fstatfs
  case SYS_fstatfs : return "fstatfs";
#endif

#ifdef SYS_fsync
  case SYS_fsync : return "fsync";
#endif

#ifdef SYS_ftruncate
  case SYS_ftruncate : return "ftruncate";
#endif

#ifdef SYS_futex
  case SYS_futex : return "futex";
#endif

#ifdef SYS_futimesat
  case SYS_futimesat : return "futimesat";
#endif

#ifdef SYS_get_kernel_syms
  case SYS_get_kernel_syms : return "get_kernel_syms";
#endif

#ifdef SYS_get_mempolicy
  case SYS_get_mempolicy : return "get_mempolicy";
#endif

#ifdef SYS_get_robust_list
  case SYS_get_robust_list : return "get_robust_list";
#endif

#ifdef SYS_get_thread_area
  case SYS_get_thread_area : return "get_thread_area";
#endif

#ifdef SYS_getcwd
  case SYS_getcwd : return "getcwd";
#endif

#ifdef SYS_getdents
  case SYS_getdents : return "getdents";
#endif

#ifdef SYS_getdents64
  case SYS_getdents64 : return "getdents64";
#endif

#ifdef SYS_getegid
  case SYS_getegid : return "getegid";
#endif

#ifdef SYS_geteuid
  case SYS_geteuid : return "geteuid";
#endif

#ifdef SYS_getgid
  case SYS_getgid : return "getgid";
#endif

#ifdef SYS_getgroups
  case SYS_getgroups : return "getgroups";
#endif

#ifdef SYS_getitimer
  case SYS_getitimer : return "getitimer";
#endif

#ifdef SYS_getpgid
  case SYS_getpgid : return "getpgid";
#endif

#ifdef SYS_getpgrp
  case SYS_getpgrp : return "getpgrp";
#endif

#ifdef SYS_getpid
  case SYS_getpid : return "getpid";
#endif

#ifdef SYS_getpmsg
  case SYS_getpmsg : return "getpmsg";
#endif

#ifdef SYS_getppid
  case SYS_getppid : return "getppid";
#endif

#ifdef SYS_getpriority
  case SYS_getpriority : return "getpriority";
#endif

#ifdef SYS_getresgid
  case SYS_getresgid : return "getresgid";
#endif

#ifdef SYS_getresuid
  case SYS_getresuid : return "getresuid";
#endif

#ifdef SYS_getrlimit
  case SYS_getrlimit : return "getrlimit";
#endif

#ifdef SYS_getrusage
  case SYS_getrusage : return "getrusage";
#endif

#ifdef SYS_getsid
  case SYS_getsid : return "getsid";
#endif

#ifdef SYS_gettid
  case SYS_gettid : return "gettid";
#endif

#ifdef SYS_gettimeofday
  case SYS_gettimeofday : return "gettimeofday";
#endif

#ifdef SYS_getuid
  case SYS_getuid : return "getuid";
#endif

#ifdef SYS_getxattr
  case SYS_getxattr : return "getxattr";
#endif

#ifdef SYS_init_module
  case SYS_init_module : return "init_module";
#endif

#ifdef SYS_inotify_add_watch
  case SYS_inotify_add_watch : return "inotify_add_watch";
#endif

#ifdef SYS_inotify_init
  case SYS_inotify_init : return "inotify_init";
#endif

#ifdef SYS_inotify_rm_watch
  case SYS_inotify_rm_watch : return "inotify_rm_watch";
#endif

#ifdef SYS_io_cancel
  case SYS_io_cancel : return "io_cancel";
#endif

#ifdef SYS_io_destroy
  case SYS_io_destroy : return "io_destroy";
#endif

#ifdef SYS_io_getevents
  case SYS_io_getevents : return "io_getevents";
#endif

#ifdef SYS_io_setup
  case SYS_io_setup : return "io_setup";
#endif

#ifdef SYS_io_submit
  case SYS_io_submit : return "io_submit";
#endif

#ifdef SYS_ioctl
  case SYS_ioctl : return "ioctl";
#endif

#ifdef SYS_ioperm
  case SYS_ioperm : return "ioperm";
#endif

#ifdef SYS_iopl
  case SYS_iopl : return "iopl";
#endif

#ifdef SYS_ioprio_get
  case SYS_ioprio_get : return "ioprio_get";
#endif

#ifdef SYS_ioprio_set
  case SYS_ioprio_set : return "ioprio_set";
#endif

#ifdef SYS_kexec_load
  case SYS_kexec_load : return "kexec_load";
#endif

#ifdef SYS_keyctl
  case SYS_keyctl : return "keyctl";
#endif

#ifdef SYS_kill
  case SYS_kill : return "kill";
#endif

#ifdef SYS_lchown
  case SYS_lchown : return "lchown";
#endif

#ifdef SYS_lgetxattr
  case SYS_lgetxattr : return "lgetxattr";
#endif

#ifdef SYS_link
  case SYS_link : return "link";
#endif

#ifdef SYS_linkat
  case SYS_linkat : return "linkat";
#endif

#ifdef SYS_listxattr
  case SYS_listxattr : return "listxattr";
#endif

#ifdef SYS_llistxattr
  case SYS_llistxattr : return "llistxattr";
#endif

#ifdef SYS_lookup_dcookie
  case SYS_lookup_dcookie : return "lookup_dcookie";
#endif

#ifdef SYS_lremovexattr
  case SYS_lremovexattr : return "lremovexattr";
#endif

#ifdef SYS_lseek
  case SYS_lseek : return "lseek";
#endif

#ifdef SYS_lsetxattr
  case SYS_lsetxattr : return "lsetxattr";
#endif

#ifdef SYS_lstat
  case SYS_lstat : return "lstat";
#endif

#ifdef SYS_madvise
  case SYS_madvise : return "madvise";
#endif

#ifdef SYS_mbind
  case SYS_mbind : return "mbind";
#endif

#ifdef SYS_migrate_pages
  case SYS_migrate_pages : return "migrate_pages";
#endif

#ifdef SYS_mincore
  case SYS_mincore : return "mincore";
#endif

#ifdef SYS_mkdir
  case SYS_mkdir : return "mkdir";
#endif

#ifdef SYS_mkdirat
  case SYS_mkdirat : return "mkdirat";
#endif

#ifdef SYS_mknod
  case SYS_mknod : return "mknod";
#endif

#ifdef SYS_mknodat
  case SYS_mknodat : return "mknodat";
#endif

#ifdef SYS_mlock
  case SYS_mlock : return "mlock";
#endif

#ifdef SYS_mlockall
  case SYS_mlockall : return "mlockall";
#endif

#ifdef SYS_mmap
  case SYS_mmap : return "mmap";
#endif

#ifdef SYS_modify_ldt
  case SYS_modify_ldt : return "modify_ldt";
#endif

#ifdef SYS_mount
  case SYS_mount : return "mount";
#endif

#ifdef SYS_move_pages
  case SYS_move_pages : return "move_pages";
#endif

#ifdef SYS_mprotect
  case SYS_mprotect : return "mprotect";
#endif

#ifdef SYS_mq_getsetattr
  case SYS_mq_getsetattr : return "mq_getsetattr";
#endif

#ifdef SYS_mq_notify
  case SYS_mq_notify : return "mq_notify";
#endif

#ifdef SYS_mq_open
  case SYS_mq_open : return "mq_open";
#endif

#ifdef SYS_mq_timedreceive
  case SYS_mq_timedreceive : return "mq_timedreceive";
#endif

#ifdef SYS_mq_timedsend
  case SYS_mq_timedsend : return "mq_timedsend";
#endif

#ifdef SYS_mq_unlink
  case SYS_mq_unlink : return "mq_unlink";
#endif

#ifdef SYS_mremap
  case SYS_mremap : return "mremap";
#endif

#ifdef SYS_msync
  case SYS_msync : return "msync";
#endif

#ifdef SYS_munlock
  case SYS_munlock : return "munlock";
#endif

#ifdef SYS_munlockall
  case SYS_munlockall : return "munlockall";
#endif

#ifdef SYS_munmap
  case SYS_munmap : return "munmap";
#endif

#ifdef SYS_nanosleep
  case SYS_nanosleep : return "nanosleep";
#endif

#ifdef SYS_nfsservctl
  case SYS_nfsservctl : return "nfsservctl";
#endif

#ifdef SYS_open
  case SYS_open : return "open";
#endif

#ifdef SYS_openat
  case SYS_openat : return "openat";
#endif

#ifdef SYS_pause
  case SYS_pause : return "pause";
#endif

#ifdef SYS_personality
  case SYS_personality : return "personality";
#endif

#ifdef SYS_pipe
  case SYS_pipe : return "pipe";
#endif

#ifdef SYS_pivot_root
  case SYS_pivot_root : return "pivot_root";
#endif

#ifdef SYS_poll
  case SYS_poll : return "poll";
#endif

#ifdef SYS_ppoll
  case SYS_ppoll : return "ppoll";
#endif

#ifdef SYS_prctl
  case SYS_prctl : return "prctl";
#endif

#ifdef SYS_pread64
  case SYS_pread64 : return "pread64";
#endif

#ifdef SYS_pselect6
  case SYS_pselect6 : return "pselect6";
#endif

#ifdef SYS_ptrace
  case SYS_ptrace : return "ptrace";
#endif

#ifdef SYS_putpmsg
  case SYS_putpmsg : return "putpmsg";
#endif

#ifdef SYS_pwrite64
  case SYS_pwrite64 : return "pwrite64";
#endif

#ifdef SYS_query_module
  case SYS_query_module : return "query_module";
#endif

#ifdef SYS_quotactl
  case SYS_quotactl : return "quotactl";
#endif

#ifdef SYS_read
  case SYS_read : return "read";
#endif

#ifdef SYS_readahead
  case SYS_readahead : return "readahead";
#endif

#ifdef SYS_readlink
  case SYS_readlink : return "readlink";
#endif

#ifdef SYS_readlinkat
  case SYS_readlinkat : return "readlinkat";
#endif

#ifdef SYS_readv
  case SYS_readv : return "readv";
#endif

#ifdef SYS_reboot
  case SYS_reboot : return "reboot";
#endif

#ifdef SYS_remap_file_pages
  case SYS_remap_file_pages : return "remap_file_pages";
#endif

#ifdef SYS_removexattr
  case SYS_removexattr : return "removexattr";
#endif

#ifdef SYS_rename
  case SYS_rename : return "rename";
#endif

#ifdef SYS_renameat
  case SYS_renameat : return "renameat";
#endif

#ifdef SYS_request_key
  case SYS_request_key : return "request_key";
#endif

#ifdef SYS_restart_syscall
  case SYS_restart_syscall : return "restart_syscall";
#endif

#ifdef SYS_rmdir
  case SYS_rmdir : return "rmdir";
#endif

#ifdef SYS_rt_sigaction
  case SYS_rt_sigaction : return "rt_sigaction";
#endif

#ifdef SYS_rt_sigpending
  case SYS_rt_sigpending : return "rt_sigpending";
#endif

#ifdef SYS_rt_sigprocmask
  case SYS_rt_sigprocmask : return "rt_sigprocmask";
#endif

#ifdef SYS_rt_sigqueueinfo
  case SYS_rt_sigqueueinfo : return "rt_sigqueueinfo";
#endif

#ifdef SYS_rt_sigreturn
  case SYS_rt_sigreturn : return "rt_sigreturn";
#endif

#ifdef SYS_rt_sigsuspend
  case SYS_rt_sigsuspend : return "rt_sigsuspend";
#endif

#ifdef SYS_rt_sigtimedwait
  case SYS_rt_sigtimedwait : return "rt_sigtimedwait";
#endif

#ifdef SYS_sched_get_priority_max
  case SYS_sched_get_priority_max : return "sched_get_priority_max";
#endif

#ifdef SYS_sched_get_priority_min
  case SYS_sched_get_priority_min : return "sched_get_priority_min";
#endif

#ifdef SYS_sched_getaffinity
  case SYS_sched_getaffinity : return "sched_getaffinity";
#endif

#ifdef SYS_sched_getparam
  case SYS_sched_getparam : return "sched_getparam";
#endif

#ifdef SYS_sched_getscheduler
  case SYS_sched_getscheduler : return "sched_getscheduler";
#endif

#ifdef SYS_sched_rr_get_interval
  case SYS_sched_rr_get_interval : return "sched_rr_get_interval";
#endif

#ifdef SYS_sched_setaffinity
  case SYS_sched_setaffinity : return "sched_setaffinity";
#endif

#ifdef SYS_sched_setparam
  case SYS_sched_setparam : return "sched_setparam";
#endif

#ifdef SYS_sched_setscheduler
  case SYS_sched_setscheduler : return "sched_setscheduler";
#endif

#ifdef SYS_sched_yield
  case SYS_sched_yield : return "sched_yield";
#endif

#ifdef SYS_select
  case SYS_select : return "select";
#endif

#ifdef SYS_sendfile
  case SYS_sendfile : return "sendfile";
#endif

#ifdef SYS_set_mempolicy
  case SYS_set_mempolicy : return "set_mempolicy";
#endif

#ifdef SYS_set_robust_list
  case SYS_set_robust_list : return "set_robust_list";
#endif

#ifdef SYS_set_thread_area
  case SYS_set_thread_area : return "set_thread_area";
#endif

#ifdef SYS_set_tid_address
  case SYS_set_tid_address : return "set_tid_address";
#endif

#ifdef SYS_setdomainname
  case SYS_setdomainname : return "setdomainname";
#endif

#ifdef SYS_setfsgid
  case SYS_setfsgid : return "setfsgid";
#endif

#ifdef SYS_setfsuid
  case SYS_setfsuid : return "setfsuid";
#endif

#ifdef SYS_setgid
  case SYS_setgid : return "setgid";
#endif

#ifdef SYS_setgroups
  case SYS_setgroups : return "setgroups";
#endif

#ifdef SYS_sethostname
  case SYS_sethostname : return "sethostname";
#endif

#ifdef SYS_setitimer
  case SYS_setitimer : return "setitimer";
#endif

#ifdef SYS_setpgid
  case SYS_setpgid : return "setpgid";
#endif

#ifdef SYS_setpriority
  case SYS_setpriority : return "setpriority";
#endif

#ifdef SYS_setregid
  case SYS_setregid : return "setregid";
#endif

#ifdef SYS_setresgid
  case SYS_setresgid : return "setresgid";
#endif

#ifdef SYS_setresuid
  case SYS_setresuid : return "setresuid";
#endif

#ifdef SYS_setreuid
  case SYS_setreuid : return "setreuid";
#endif

#ifdef SYS_setrlimit
  case SYS_setrlimit : return "setrlimit";
#endif

#ifdef SYS_setsid
  case SYS_setsid : return "setsid";
#endif

#ifdef SYS_settimeofday
  case SYS_settimeofday : return "settimeofday";
#endif


#ifdef SYS_setuid
  case SYS_setuid : return "setuid";
#endif

#ifdef SYS_setxattr
  case SYS_setxattr : return "setxattr";
#endif

#ifdef SYS_sigaltstack
  case SYS_sigaltstack : return "sigaltstack";
#endif

#ifdef SYS_signalfd
  case SYS_signalfd : return "signalfd";
#endif

#ifdef SYS_splice
  case SYS_splice : return "splice";
#endif

#ifdef SYS_stat
  case SYS_stat : return "stat";
#endif

#ifdef SYS_statfs
  case SYS_statfs : return "statfs";
#endif

#ifdef SYS_swapoff
  case SYS_swapoff : return "swapoff";
#endif

#ifdef SYS_swapon
  case SYS_swapon : return "swapon";
#endif

#ifdef SYS_symlink
  case SYS_symlink : return "symlink";
#endif

#ifdef SYS_symlinkat
  case SYS_symlinkat : return "symlinkat";
#endif

#ifdef SYS_sync
  case SYS_sync : return "sync";
#endif

#ifdef SYS_sync_file_range
  case SYS_sync_file_range : return "sync_file_range";
#endif

#ifdef SYS_sysfs
  case SYS_sysfs : return "sysfs";
#endif

#ifdef SYS_sysinfo
  case SYS_sysinfo : return "sysinfo";
#endif

#ifdef SYS_syslog
  case SYS_syslog : return "syslog";
#endif

#ifdef SYS_tee
  case SYS_tee : return "tee";
#endif

#ifdef SYS_tgkill
  case SYS_tgkill : return "tgkill";
#endif

#ifdef SYS_time
  case SYS_time : return "time";
#endif

#ifdef SYS_timer_create
  case SYS_timer_create : return "timer_create";
#endif

#ifdef SYS_timer_delete
  case SYS_timer_delete : return "timer_delete";
#endif

#ifdef SYS_timer_getoverrun
  case SYS_timer_getoverrun : return "timer_getoverrun";
#endif

#ifdef SYS_timer_gettime
  case SYS_timer_gettime : return "timer_gettime";
#endif

#ifdef SYS_timer_settime
  case SYS_timer_settime : return "timer_settime";
#endif

#ifdef SYS_timerfd_create
  case SYS_timerfd_create : return "timerfd_create";
#endif

#ifdef SYS_timerfd_gettime
  case SYS_timerfd_gettime : return "timerfd_gettime";
#endif

#ifdef SYS_timerfd_settime
  case SYS_timerfd_settime : return "timerfd_settime";
#endif

#ifdef SYS_times
  case SYS_times : return "times";
#endif

#ifdef SYS_tkill
  case SYS_tkill : return "tkill";
#endif

#ifdef SYS_truncate
  case SYS_truncate : return "truncate";
#endif

#ifdef SYS_umask
  case SYS_umask : return "umask";
#endif

#ifdef SYS_umount2
  case SYS_umount2 : return "umount2";
#endif

#ifdef SYS_uname
  case SYS_uname : return "uname";
#endif

#ifdef SYS_unlink
  case SYS_unlink : return "unlink";
#endif

#ifdef SYS_unlinkat
  case SYS_unlinkat : return "unlinkat";
#endif

#ifdef SYS_unshare
  case SYS_unshare : return "unshare";
#endif

#ifdef SYS_uselib
  case SYS_uselib : return "uselib";
#endif

#ifdef SYS_ustat
  case SYS_ustat : return "ustat";
#endif

#ifdef SYS_utime
  case SYS_utime : return "utime";
#endif

#ifdef SYS_utimensat
  case SYS_utimensat : return "utimensat";
#endif

#ifdef SYS_utimes
  case SYS_utimes : return "utimes";
#endif

#ifdef SYS_vfork
  case SYS_vfork : return "vfork";
#endif

#ifdef SYS_vhangup
  case SYS_vhangup : return "vhangup";
#endif

#ifdef SYS_vmsplice
  case SYS_vmsplice : return "vmsplice";
#endif

#ifdef SYS_vserver
  case SYS_vserver : return "vserver";
#endif

#ifdef SYS_wait4
  case SYS_wait4 : return "wait4";
#endif

#ifdef SYS_waitid
  case SYS_waitid : return "waitid";
#endif

#ifdef SYS_write
  case SYS_write : return "write";
#endif

#ifdef SYS_writev
  case SYS_writev : return "writev";
#endif

#ifdef SYS_accept
  case SYS_accept : return "accept";
#endif

#ifdef SYS_arch_prctl
  case SYS_arch_prctl : return "arch_prctl";
#endif

#ifdef SYS_bind
  case SYS_bind : return "bind";
#endif

#ifdef SYS_connect
  case SYS_connect : return "connect";
#endif

#ifdef SYS_epoll_ctl_old
  case SYS_epoll_ctl_old : return "epoll_ctl_old";
#endif

#ifdef SYS_epoll_wait_old
  case SYS_epoll_wait_old : return "epoll_wait_old";
#endif

#ifdef SYS_getpeername
  case SYS_getpeername : return "getpeername";
#endif

#ifdef SYS_getsockname
  case SYS_getsockname : return "getsockname";
#endif

#ifdef SYS_getsockopt
  case SYS_getsockopt : return "getsockopt";
#endif

#ifdef SYS_listen
  case SYS_listen : return "listen";
#endif

#ifdef SYS_msgctl
  case SYS_msgctl : return "msgctl";
#endif

#ifdef SYS_msgget
  case SYS_msgget : return "msgget";
#endif

#ifdef SYS_msgrcv
  case SYS_msgrcv : return "msgrcv";
#endif

#ifdef SYS_msgsnd
  case SYS_msgsnd : return "msgsnd";
#endif

#ifdef SYS_newfstatat
  case SYS_newfstatat : return "newfstatat";
#endif

#ifdef SYS_recvfrom
  case SYS_recvfrom : return "recvfrom";
#endif

#ifdef SYS_recvmsg
  case SYS_recvmsg : return "recvmsg";
#endif

#ifdef SYS_security
  case SYS_security : return "security";
#endif

#ifdef SYS_semctl
  case SYS_semctl : return "semctl";
#endif

#ifdef SYS_semget
  case SYS_semget : return "semget";
#endif

#ifdef SYS_semop
  case SYS_semop : return "semop";
#endif

#ifdef SYS_semtimedop
  case SYS_semtimedop : return "semtimedop";
#endif

#ifdef SYS_sendmsg
  case SYS_sendmsg : return "sendmsg";
#endif

#ifdef SYS_sendto
  case SYS_sendto : return "sendto";
#endif

#ifdef SYS_setsockopt
  case SYS_setsockopt : return "setsockopt";
#endif

#ifdef SYS_shmat
  case SYS_shmat : return "shmat";
#endif

#ifdef SYS_shmctl
  case SYS_shmctl : return "shmctl";
#endif

#ifdef SYS_shmdt
  case SYS_shmdt : return "shmdt";
#endif

#ifdef SYS_shmget
  case SYS_shmget : return "shmget";
#endif

#ifdef SYS_shutdown
  case SYS_shutdown : return "shutdown";
#endif

#ifdef SYS_socket
  case SYS_socket : return "socket";
#endif

#ifdef SYS_socketpair
  case SYS_socketpair : return "socketpair";
#endif

#ifdef SYS_tuxcall
  case SYS_tuxcall : return "tuxcall";
#endif

#ifdef SYS__llseek
  case SYS__llseek : return "_llseek";
#endif

#ifdef SYS__newselect
  case SYS__newselect : return "_newselect";
#endif

#ifdef SYS_bdflush
  case SYS_bdflush : return "bdflush";
#endif

#ifdef SYS_break
  case SYS_break : return "break";
#endif

#ifdef SYS_chown32
  case SYS_chown32 : return "chown32";
#endif

#ifdef SYS_fadvise64_64
  case SYS_fadvise64_64 : return "fadvise64_64";
#endif

#ifdef SYS_fchown32
  case SYS_fchown32 : return "fchown32";
#endif

#ifdef SYS_fcntl64
  case SYS_fcntl64 : return "fcntl64";
#endif

#ifdef SYS_fstat64
  case SYS_fstat64 : return "fstat64";
#endif

#ifdef SYS_fstatat64
  case SYS_fstatat64 : return "fstatat64";
#endif

#ifdef SYS_fstatfs64
  case SYS_fstatfs64 : return "fstatfs64";
#endif

#ifdef SYS_ftime
  case SYS_ftime : return "ftime";
#endif

#ifdef SYS_ftruncate64
  case SYS_ftruncate64 : return "ftruncate64";
#endif

#ifdef SYS_getcpu
  case SYS_getcpu : return "getcpu";
#endif

#ifdef SYS_getegid32
  case SYS_getegid32 : return "getegid32";
#endif

#ifdef SYS_geteuid32
  case SYS_geteuid32 : return "geteuid32";
#endif

#ifdef SYS_getgid32
  case SYS_getgid32 : return "getgid32";
#endif

#ifdef SYS_getgroups32
  case SYS_getgroups32 : return "getgroups32";
#endif

#ifdef SYS_getresgid32
  case SYS_getresgid32 : return "getresgid32";
#endif

#ifdef SYS_getresuid32
  case SYS_getresuid32 : return "getresuid32";
#endif

#ifdef SYS_getuid32
  case SYS_getuid32 : return "getuid32";
#endif

#ifdef SYS_gtty
  case SYS_gtty : return "gtty";
#endif

#ifdef SYS_idle
  case SYS_idle : return "idle";
#endif

#ifdef SYS_ipc
  case SYS_ipc : return "ipc";
#endif

#ifdef SYS_lchown32
  case SYS_lchown32 : return "lchown32";
#endif

#ifdef SYS_lock
  case SYS_lock : return "lock";
#endif

#ifdef SYS_lstat64
  case SYS_lstat64 : return "lstat64";
#endif

#ifdef SYS_madvise1
  case SYS_madvise1 : return "madvise1";
#endif

#ifdef SYS_mmap2
  case SYS_mmap2 : return "mmap2";
#endif

#ifdef SYS_mpx
  case SYS_mpx : return "mpx";
#endif

#ifdef SYS_nice
  case SYS_nice : return "nice";
#endif

#ifdef SYS_oldfstat
  case SYS_oldfstat : return "oldfstat";
#endif

#ifdef SYS_oldlstat
  case SYS_oldlstat : return "oldlstat";
#endif

#ifdef SYS_oldolduname
  case SYS_oldolduname : return "oldolduname";
#endif

#ifdef SYS_oldstat
  case SYS_oldstat : return "oldstat";
#endif

#ifdef SYS_olduname
  case SYS_olduname : return "olduname";
#endif

#ifdef SYS_prof
  case SYS_prof : return "prof";
#endif

#ifdef SYS_profil
  case SYS_profil : return "profil";
#endif

#ifdef SYS_readdir
  case SYS_readdir : return "readdir";
#endif

#ifdef SYS_sendfile64
  case SYS_sendfile64 : return "sendfile64";
#endif

#ifdef SYS_setfsgid32
  case SYS_setfsgid32 : return "setfsgid32";
#endif

#ifdef SYS_setfsuid32
  case SYS_setfsuid32 : return "setfsuid32";
#endif

#ifdef SYS_setgid32
  case SYS_setgid32 : return "setgid32";
#endif

#ifdef SYS_setgroups32
  case SYS_setgroups32 : return "setgroups32";
#endif

#ifdef SYS_setregid32
  case SYS_setregid32 : return "setregid32";
#endif

#ifdef SYS_setresgid32
  case SYS_setresgid32 : return "setresgid32";
#endif

#ifdef SYS_setresuid32
  case SYS_setresuid32 : return "setresuid32";
#endif

#ifdef SYS_setreuid32
  case SYS_setreuid32 : return "setreuid32";
#endif

#ifdef SYS_setuid32
  case SYS_setuid32 : return "setuid32";
#endif

#ifdef SYS_sgetmask
  case SYS_sgetmask : return "sgetmask";
#endif

#ifdef SYS_sigaction
  case SYS_sigaction : return "sigaction";
#endif

#ifdef SYS_signal
  case SYS_signal : return "signal";
#endif

#ifdef SYS_sigpending
  case SYS_sigpending : return "sigpending";
#endif

#ifdef SYS_sigprocmask
  case SYS_sigprocmask : return "sigprocmask";
#endif

#ifdef SYS_sigreturn
  case SYS_sigreturn : return "sigreturn";
#endif

#ifdef SYS_sigsuspend
  case SYS_sigsuspend : return "sigsuspend";
#endif

#ifdef SYS_socketcall
  case SYS_socketcall : return "socketcall";
#endif

#ifdef SYS_ssetmask
  case SYS_ssetmask : return "ssetmask";
#endif

#ifdef SYS_stat64
  case SYS_stat64 : return "stat64";
#endif

#ifdef SYS_statfs64
  case SYS_statfs64 : return "statfs64";
#endif

#ifdef SYS_stime
  case SYS_stime : return "stime";
#endif

#ifdef SYS_stty
  case SYS_stty : return "stty";
#endif

#ifdef SYS_truncate64
  case SYS_truncate64 : return "truncate64";
#endif

#ifdef SYS_ugetrlimit
  case SYS_ugetrlimit : return "ugetrlimit";
#endif

#ifdef SYS_ulimit
  case SYS_ulimit : return "ulimit";
#endif

#ifdef SYS_umount
  case SYS_umount : return "umount";
#endif

#ifdef SYS_vm86
  case SYS_vm86 : return "vm86";
#endif

#ifdef SYS_vm86old
  case SYS_vm86old : return "vm86old";
#endif

#ifdef SYS_waitpid
  case SYS_waitpid : return "waitpid";
#endif

  default:
    return "unknown";
  }
}