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Annotation of 43BSDReno/contrib/isode-beta/compat/general.c, revision 1.1.1.1

1.1       root        1: /* general.c - general utilities for emulation of 4.2BSD */
                      2: 
                      3: #ifndef        lint
                      4: static char *rcsid = "$Header: /f/osi/compat/RCS/general.c,v 7.0 89/11/23 21:23:00 mrose Rel $";
                      5: #endif
                      6: 
                      7: /* 
                      8:  * $Header: /f/osi/compat/RCS/general.c,v 7.0 89/11/23 21:23:00 mrose Rel $
                      9:  *
                     10:  *
                     11:  * $Log:       general.c,v $
                     12:  * Revision 7.0  89/11/23  21:23:00  mrose
                     13:  * Release 6.0
                     14:  * 
                     15:  */
                     16: 
                     17: /*
                     18:  *                               NOTICE
                     19:  *
                     20:  *    Acquisition, use, and distribution of this module and related
                     21:  *    materials are subject to the restrictions of a license agreement.
                     22:  *    Consult the Preface in the User's Manual for the full terms of
                     23:  *    this agreement.
                     24:  *
                     25:  */
                     26: 
                     27: 
                     28: /* LINTLIBRARY */
                     29: 
                     30: #include <stdio.h>
                     31: #include "general.h"
                     32: #include "manifest.h"
                     33: 
                     34: /*    Berkeley UNIX: 4.2 */
                     35: 
                     36: #ifdef BSD42
                     37: 
                     38: /* Simply including "general.h" is sufficient. */
                     39: 
                     40: #endif
                     41: 
                     42: /*    non-Berkeley UNIX */
                     43: 
                     44: #ifndef        BSDLIBC
                     45: 
                     46: #ifndef        lint
                     47: 
                     48: struct qelem {
                     49:     struct qelem   *q_forw;
                     50:     struct qelem   *q_back;
                     51:     char           q_data[1];  /* extensible */
                     52: };
                     53: 
                     54: 
                     55: insque (elem, pred)
                     56: struct qelem   *elem,
                     57:               *pred;
                     58: {
                     59:     pred -> q_forw -> q_back = elem;
                     60:     elem -> q_forw = pred -> q_forw;
                     61:     elem -> q_back = pred;
                     62:     pred -> q_forw = elem;
                     63: }
                     64: 
                     65: 
                     66: remque (elem)
                     67: struct qelem   *elem;
                     68: {
                     69:     elem -> q_forw -> q_back = elem -> q_back;
                     70:     elem -> q_back -> q_forw = elem -> q_forw;
                     71: }
                     72: 
                     73: #endif
                     74: #endif
                     75: 
                     76: /*    DUP2 */
                     77: 
                     78: #ifdef SYS5
                     79: #include <fcntl.h>
                     80: 
                     81: 
                     82: extern int errno;
                     83: 
                     84: 
                     85: int     dup2 (d1, d2)
                     86: register int    d1,
                     87:                 d2;
                     88: {
                     89:     int     d;
                     90: 
                     91:     if (d1 == d2)
                     92:        return OK;
                     93: 
                     94:     (void) close (d2);
                     95:     if ((d = fcntl (d1, F_DUPFD, d2)) == NOTOK)
                     96:        return NOTOK;
                     97:     if (d == d2)
                     98:        return OK;
                     99: 
                    100:     errno = 0;
                    101:     return NOTOK;
                    102: }
                    103: #endif
                    104: 
                    105: /*     BYTEORDER */
                    106: 
                    107: #ifndef        SWABLIB
                    108: 
                    109: /* ROS and HP-UX don't seem to have these in libc.a */
                    110: 
                    111: #undef ntohs
                    112: u_short        ntohs (netshort) u_short netshort; { return netshort; }
                    113: 
                    114: #undef htons
                    115: u_short        htons (hostshort) u_short hostshort; { return hostshort; }
                    116: 
                    117: #undef ntohl
                    118: u_long ntohl (netlong) u_long netlong; { return netlong; }
                    119: 
                    120: #undef htonl
                    121: u_long htonl (hostlong) u_long hostlong; { return hostlong; }
                    122: 
                    123: #endif

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