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Annotation of xinu/sys/LSI/iblfree.c, revision 1.1.1.1

1.1       root        1: /* iblfree.c - iblfree */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <io.h>
                      6: #include <disk.h>
                      7: #include <lfile.h>
                      8: #include <dir.h>
                      9: 
                     10: /*------------------------------------------------------------------------
                     11:  *  iblfree  --  free a list of iblocks given the number of the first
                     12:  *------------------------------------------------------------------------
                     13:  */
                     14: iblfree(diskdev, iblist)
                     15: int    diskdev;
                     16: IBADDR iblist;
                     17: {
                     18:        IBADDR  ilast;
                     19:        struct  iblk    iblock;
                     20:        struct  dir     *dirptr;
                     21:        int     sem;
                     22:        DBADDR  dba;
                     23:        int     j;
                     24: 
                     25:        if (iblist == IBNULL)
                     26:                return(OK);
                     27:        dirptr = dsdirec(diskdev);
                     28:        ibget(diskdev, iblist, &iblock);
                     29:        for (ilast=iblist ; iblock.ib_next!=IBNULL ;) {
                     30:                for (j=0 ; j<IBLEN ; j++)
                     31:                        if ( (dba=iblock.ib_dba[j]) != DBNULL)
                     32:                                lfsdfree(diskdev, dba);
                     33:                ilast = iblock.ib_next;
                     34:                ibget(diskdev, ilast, &iblock);
                     35:        }
                     36:        for (j=0 ; j<IBLEN ; j++)
                     37:                if ( (dba=iblock.ib_dba[j]) != DBNULL)
                     38:                        lfsdfree(diskdev, dba);
                     39:        sem = ( (struct dsblk *)devtab[diskdev].dvioblk)->dflsem;
                     40:        wait(sem);
                     41:        iblock.ib_next = dirptr->d_filst;
                     42:        dirptr->d_filst = iblist;
                     43:        ibput(diskdev, ilast, &iblock);
                     44:        write(diskdev, dskbcpy(dirptr), DIRBLK);
                     45:        signal(sem);
                     46:        return(OK);
                     47: }

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