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Annotation of researchv10no/cmd/worm/scsi/allocate.c, revision 1.1.1.1

1.1       root        1: #define        _POSIX_SOURCE
                      2: #include       <stddef.h>
                      3: #include       <stdlib.h>
                      4: #include       <unistd.h>
                      5: #include       <stdio.h>
                      6: #include       <string.h>
                      7: #include       <errno.h>
                      8: #include       <time.h>
                      9: #include       "jukeface.h"
                     10: #include       "jukebox.h"
                     11: 
                     12: allocate(Jukebox *j, char *vol_id, char *buf)
                     13: {
                     14:        int drive, sh;
                     15:        char nbuf[512];
                     16:        
                     17:        if(j_rdshelves(j, buf)) /* read in shelf names */
                     18:                return(-1);
                     19:        if(j_shstatus(j, buf))  /* get the jukebox status */
                     20:                return(-1);
                     21:        sh = j_shelfof(j, vol_id);
                     22:        if(sh >= 0){
                     23:                sprintf(buf, "there is an existing '%s' on shelf %d", vol_id, sh);
                     24:                return(-1);
                     25:        }
                     26:        sh = j_shelfof(j, UNALLOCATED);
                     27:        if(sh < 0){
                     28:                sprintf(buf, "no unallocated disks");
                     29:                return(-1);
                     30:        }
                     31:        printf("using unallocated disk from shelf %d\n", sh);
                     32:        drive = j->nluns-1;
                     33:        if(j_sh_to_dr(sh, SIDEB, drive, buf) < 0)
                     34:                return(-1);
                     35:        sprintf(nbuf, "%sb", vol_id);
                     36:        if(j_wvolid(drive, nbuf, buf))
                     37:                return(-1);
                     38:        j_wrshelf = 1;
                     39:        j->names[sh] = strdup(vol_id);
                     40:        j->shelves[sh] = 1;
                     41:        if(j_dr_to_sh(drive, sh, SIDEB, buf) < 0)
                     42:                return(-1);
                     43:        if(j_sh_to_dr(sh, SIDEA, drive, buf) < 0)
                     44:                return(-1);
                     45:        sprintf(nbuf, "%sa", vol_id);
                     46:        if(j_wvolid(drive, nbuf, buf))
                     47:                return(-1);
                     48:        if(j_dr_to_sh(drive, sh, SIDEA, buf) < 0)
                     49:                return(-1);
                     50:        return(0);
                     51: }

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