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Annotation of 43BSD/contrib/notes/src/note.c, revision 1.1.1.1

1.1       root        1: #ifdef RCSIDENT
                      2: static char rcsid[] = "$Header: note.c,v 1.7 85/01/18 15:32:57 notes Rel $";
                      3: #endif RCSIDENT
                      4: 
                      5: /*
                      6:  *     Putnote
                      7:  *
                      8:  *     Take the given text, and make put it into the note file.
                      9:  *     following algorithm:
                     10:  *     reserve space for text
                     11:  *     write the text
                     12:  *     make the note header record
                     13:  *     lock the index file
                     14:  *     write the note header info
                     15:  *     unlock the index file
                     16:  *     rewrite the correct text header info
                     17:  *
                     18:  *
                     19:  *     Delnote(io, noteno):  marks the status word as deleted.
                     20:  *
                     21:  *     Original authors:       Rob Kolstad and Ray Essick      Winter 1980
                     22:  *     modified;       Ray Essick      December 1981
                     23:  */
                     24: 
                     25: #include "parms.h"
                     26: #include "structs.h"
                     27: 
                     28: putnote (io, where, title, status, note, auth, policy, lockit, addid, fromsys, addtime)
                     29: struct io_f *io;
                     30: struct daddr_f *where;
                     31: char   *title;
                     32: struct note_f  *note;
                     33: struct auth_f  *auth;
                     34: /* policy = true if this is the policy note */
                     35: /* addid = fales if we already have an id for the note */
                     36: /* addtime = false if we already have a time for the note */
                     37: char   *fromsys;                                       /* whom we recieved it from (routing) */
                     38: {
                     39:     int     count;
                     40:     char   *p;
                     41:     int     notenum;
                     42: 
                     43:     note -> n_nresp = 0;                               /* no responses yet */
                     44:     if (addtime)                                       /* dont if compressing... */
                     45:     {
                     46:        gettime (&note -> n_rcvd);
                     47:        gettime (&note -> n_lmod);                      /* date of last mod is same */
                     48:     }
                     49:     note -> n_auth = *auth;                            /* move author over */
                     50:     strcpy (note -> n_from, fromsys);                  /* who gave it to us */
                     51:     note -> n_rindx = (-1);                            /* no place for responses yet */
                     52:     note -> n_stat = status;                           /* director message, deleted, etc */
                     53:     note -> n_addr = *where;                           /* where on disk */
                     54:     strncpy (note -> ntitle, title, TITLEN);           /* copy */
                     55:     note -> ntitle[TITLEN - 1] = '\0';                 /* stop for sure */
                     56: 
                     57:     if (lockit)
                     58:        locknf (io, DSCRLOCK);                          /* BEGIN CRITICAL SECTION */
                     59:     getdscr (io, &io -> descr);                                /* grab notesfile header */
                     60:     if (io -> descr.d_stat & NFINVALID)
                     61:     {
                     62:        if (lockit)
                     63:            unlocknf (io, DSCRLOCK);
                     64:        closenf (io);
                     65:        opennf (io, 0);                                 /* get new links */
                     66:        printf ("Sorry, your note has been lost in a compression");
                     67: /*
                     68:  *     Should give the user a chance to recover his text somewhere
                     69:  *     in here 
                     70:  */
                     71:        fflush (stdout);
                     72:        sleep (1);
                     73:        return (-1);
                     74:     }
                     75:     if (addid)
                     76:     {
                     77: #ifdef SHAREDATA
                     78:        strmove (System, note -> n_id.sys);             /* copy sys name */
                     79: #else  ! SHAREDATA
                     80:        strmove (io -> descr.d_id.sys, note -> n_id.sys);
                     81: #endif SHAREDATA
                     82:        note -> n_id.uniqid = ++(io -> descr.d_id.uniqid);
                     83:                                                        /* and unique id num */
                     84: #ifdef UNIQPLEX
                     85:        note -> n_id.uniqid += UNIQPLEX * io -> descr.d_nfnum;
                     86:                                                        /* mpx in nf num */
                     87: #endif
                     88:     }
                     89: 
                     90:     if (policy)
                     91:     {
                     92:        io -> descr.d_plcy = 1;                         /* mark as having a policy note */
                     93:        notenum = 0;
                     94:     }
                     95:     else
                     96:        notenum = ++io -> descr.d_nnote;                /* this note's number */
                     97:     if (addtime)                                       /* see if want timestamp */
                     98:        gettime (&io -> descr.d_lastm);                 /* last time file modified */
                     99:     putnrec (io, notenum, note);                       /* write note info */
                    100:     putdscr (io, &io -> descr);                                /* rewrite header info */
                    101:     if (lockit)
                    102:        unlocknf (io, DSCRLOCK);                        /* END CRITICAL SECTION */
                    103:     io -> nnotwrit++;                                  /* bump count of writes */
                    104:     return (io -> descr.d_nnote);                      /* tell which slot it is in */
                    105: }
                    106: 
                    107: 
                    108: delnote (io, noteno, lockit)
                    109: struct io_f *io;
                    110: {
                    111:     struct note_f   note;
                    112: 
                    113:     if (lockit)
                    114:        locknf (io, DSCRLOCK);                          /* CRITICAL */
                    115:     getnrec (io, noteno, &note);                       /* get the note */
                    116:     note.n_stat |= DELETED;                            /* deleted */
                    117:     putnrec (io, noteno, &note);
                    118:     getdscr (io, &io -> descr);                                /* update delete count */
                    119:     io -> descr.d_delnote++;
                    120:     io -> descr.d_delresp += note.n_nresp;             /* count resps */
                    121:     putdscr (io, &io -> descr);
                    122:     if (lockit)
                    123:        unlocknf (io, DSCRLOCK);                        /* END CRITICAL */
                    124: }

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