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Annotation of xinu/sys/rfopen.c, revision 1.1.1.1

1.1       root        1: /* rfopen.c - rfopen */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <network.h>
                      6: 
                      7: /*------------------------------------------------------------------------
                      8:  *  rfopen  --  open a remote file
                      9:  *------------------------------------------------------------------------
                     10:  */
                     11: rfopen(devptr, name, mode)
                     12: struct devsw   *devptr;
                     13: char   *name;
                     14: char   *mode;
                     15: {
                     16:        struct  rfblk   *rfptr;
                     17:        int     i;
                     18:        int     mbits;
                     19:        int     devnum;
                     20:        PStype  ps;
                     21: 
                     22:        disable(ps);
                     23:        if (strlen(name) > RNAMLEN || (mbits=ckmode(mode)) == SYSERR
                     24:            || (i=rfalloc()) == SYSERR) {
                     25:                restore(ps);
                     26:                return(SYSERR);
                     27:        }
                     28:        rfptr = &Rf.rftab[i];
                     29:        devnum = rfptr->rf_dnum;
                     30:        strcpy(rfptr->rf_name, name);
                     31:        rfptr->rf_mode = mbits;
                     32:        rfptr->rf_pos = 0L;
                     33: 
                     34:        /* send remote file open request */
                     35: 
                     36:        if ( rfio(&devtab[devnum], FS_OPEN, NULLSTR, mbits) == SYSERR ) {
                     37:                rfptr->rf_state = RFREE;
                     38:                restore(ps);
                     39:                return(SYSERR);
                     40:        }
                     41:        restore(ps);
                     42:        return(devnum);
                     43: }

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