UNIX 7th Ed. - /usr/sys/sys/sysent.c

   1: #include "../h/param.h"
   2: #include "../h/systm.h"
   3: 
   4: /*
   5:  * This table is the switch used to transfer
   6:  * to the appropriate routine for processing a system call.
   7:  * Each row contains the number of arguments expected
   8:  * and a pointer to the routine.
   9:  */
  10: int alarm();
  11: int mpxchan();
  12: int chdir();
  13: int chmod();
  14: int chown();
  15: int chroot();
  16: int close();
  17: int creat();
  18: int dup();
  19: int exec();
  20: int exece();
  21: int fork();
  22: int fstat();
  23: int getgid();
  24: int getpid();
  25: int getuid();
  26: int gtime();
  27: int gtty();
  28: int ioctl();
  29: int kill();
  30: int link();
  31: int mknod();
  32: int nice();
  33: int nosys();
  34: int nullsys();
  35: int open();
  36: int pause();
  37: int pipe();
  38: int profil();
  39: int ptrace();
  40: int read();
  41: int rexit();
  42: int saccess();
  43: int sbreak();
  44: int seek();
  45: int setgid();
  46: int setuid();
  47: int smount();
  48: int ssig();
  49: int stat();
  50: int stime();
  51: int stty();
  52: int sumount();
  53: int ftime();
  54: int sync();
  55: int sysacct();
  56: int syslock();
  57: int sysphys();
  58: int times();
  59: int umask();
  60: int unlink();
  61: int utime();
  62: int wait();
  63: int write();
  64: 
  65: struct sysent sysent[64] =
  66: {
  67:     0, 0, nullsys,          /*  0 = indir */
  68:     1, 1, rexit,            /*  1 = exit */
  69:     0, 0, fork,         /*  2 = fork */
  70:     3, 1, read,         /*  3 = read */
  71:     3, 1, write,            /*  4 = write */
  72:     2, 0, open,         /*  5 = open */
  73:     1, 1, close,            /*  6 = close */
  74:     0, 0, wait,         /*  7 = wait */
  75:     2, 0, creat,            /*  8 = creat */
  76:     2, 0, link,         /*  9 = link */
  77:     1, 0, unlink,           /* 10 = unlink */
  78:     2, 0, exec,         /* 11 = exec */
  79:     1, 0, chdir,            /* 12 = chdir */
  80:     0, 0, gtime,            /* 13 = time */
  81:     3, 0, mknod,            /* 14 = mknod */
  82:     2, 0, chmod,            /* 15 = chmod */
  83:     3, 0, chown,            /* 16 = chown; now 3 args */
  84:     1, 0, sbreak,           /* 17 = break */
  85:     2, 0, stat,         /* 18 = stat */
  86:     4, 1, seek,         /* 19 = seek; now 3 args */
  87:     0, 0, getpid,           /* 20 = getpid */
  88:     3, 0, smount,           /* 21 = mount */
  89:     1, 0, sumount,          /* 22 = umount */
  90:     1, 1, setuid,           /* 23 = setuid */
  91:     0, 0, getuid,           /* 24 = getuid */
  92:     2, 2, stime,            /* 25 = stime */
  93:     4, 1, ptrace,           /* 26 = ptrace */
  94:     1, 1, alarm,            /* 27 = alarm */
  95:     2, 1, fstat,            /* 28 = fstat */
  96:     0, 0, pause,            /* 29 = pause */
  97:     2, 0, utime,            /* 30 = utime */
  98:     2, 1, stty,         /* 31 = stty */
  99:     2, 1, gtty,         /* 32 = gtty */
 100:     2, 0, saccess,          /* 33 = access */
 101:     1, 1, nice,         /* 34 = nice */
 102:     1, 0, ftime,            /* 35 = ftime; formerly sleep */
 103:     0, 0, sync,         /* 36 = sync */
 104:     2, 1, kill,         /* 37 = kill */
 105:     0, 0, nullsys,          /* 38 = switch; inoperative */
 106:     0, 0, nullsys,          /* 39 = setpgrp (not in yet) */
 107:     1, 1, nosys,            /* 40 = tell (obsolete) */
 108:     2, 2, dup,          /* 41 = dup */
 109:     0, 0, pipe,         /* 42 = pipe */
 110:     1, 0, times,            /* 43 = times */
 111:     4, 0, profil,           /* 44 = prof */
 112:     0, 0, nosys,            /* 45 = unused */
 113:     1, 1, setgid,           /* 46 = setgid */
 114:     0, 0, getgid,           /* 47 = getgid */
 115:     2, 0, ssig,         /* 48 = sig */
 116:     0, 0, nosys,            /* 49 = reserved for USG */
 117:     0, 0, nosys,            /* 50 = reserved for USG */
 118:     1, 0, sysacct,          /* 51 = turn acct off/on */
 119:     3, 0, sysphys,          /* 52 = set user physical addresses */
 120:     1, 0, syslock,          /* 53 = lock user in core */
 121:     3, 0, ioctl,            /* 54 = ioctl */
 122:     0, 0, nosys,            /* 55 = readwrite (in abeyance) */
 123:     4, 0, mpxchan,          /* 56 = creat mpx comm channel */
 124:     0, 0, nosys,            /* 57 = reserved for USG */
 125:     0, 0, nosys,            /* 58 = reserved for USG */
 126:     3, 0, exece,            /* 59 = exece */
 127:     1, 0, umask,            /* 60 = umask */
 128:     1, 0, chroot,           /* 61 = chroot */
 129:     0, 0, nosys,            /* 62 = x */
 130:     0, 0, nosys         /* 63 = used internally */
 131: };

Defined variables