12.11 The File ‘sys4.c’

All the procedures in this file implement system calls. The following procedures are described in Chapter 13:

    ssig (3614)     kill (3630)

The following procedures are straightforward and have been left for the amusement and edification of the reader:

    getswit (3413) sync (3486)
    gtime (3420)   getgid (3472)
    stime (3428)   getpid (3480)
    setuid (3439)  nice (3493)
    getuid (3452)  times (3656)
    setgid (3460)  profil (3667)

The following procedures which are concerned with file systems, are described later:

    unlink (3510)   chown (3575)
    chdir (3538)    smdate (3595)
    chmod (3560)