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Annotation of 42BSD/sys/stand/drtest.c, revision 1.1.1.1

1.1       root        1: /*     drtest.c        6.1     83/07/29        */
                      2: 
                      3: /*
                      4:  * Standalone program to test a disk and driver
                      5:  * by reading the disk a track at a time.
                      6:  */
                      7: #include "../h/param.h"
                      8: #include "../h/inode.h"
                      9: #include "../h/fs.h"
                     10: #include "saio.h"
                     11: 
                     12: #define SECTSIZ        512
                     13: 
                     14: extern int end;
                     15: char   *malloc();
                     16: char   *prompt();
                     17: 
                     18: main()
                     19: {
                     20:        char *cp, *bp;
                     21:        int fd, tracksize, debug;
                     22:        register int sector, lastsector;
                     23:        struct st st;
                     24: 
                     25:        printf("Testprogram for stand-alone driver\n\n");
                     26: again:
                     27:        cp = prompt("Enable debugging (1=bse, 2=ecc, 3=bse+ecc)? ");
                     28:        debug = atoi(cp);
                     29:        if (debug < 0)
                     30:                debug = 0;
                     31:        fd = getdevice();
                     32:        ioctl(fd, SAIODEVDATA, (char *)&st);
                     33:        printf("Device data: #cylinders=%d, #tracks=%d, #sectors=%d\n",
                     34:                st.ncyl, st.ntrak, st.nsect);
                     35:        ioctl(fd, SAIODEBUG, (char *)debug);
                     36:        tracksize = st.nsect * SECTSIZ;
                     37:        bp = malloc(tracksize);
                     38:        printf("Reading in %d byte records\n", tracksize);
                     39:        printf("Start ...make sure drive is on-line\n");
                     40:        lseek(fd, 0, 0);
                     41:        lastsector = st.ncyl * st.nspc;
                     42:        for (sector = 0; sector < lastsector; sector += st.nsect) {
                     43:                if (sector && (sector % (st.nspc * 10)) == 0)
                     44:                        printf("cylinder %d\n", sector/st.nspc);
                     45:                read(fd, bp, tracksize);
                     46:        }
                     47:        goto again;
                     48: }
                     49: 
                     50: /*
                     51:  * Prompt and verify a device name from the user.
                     52:  */
                     53: getdevice()
                     54: {
                     55:        register char *cp;
                     56:        register struct devsw *dp;
                     57:        int fd;
                     58: 
                     59: top:
                     60:        cp = prompt("Device to read? ");
                     61:        if ((fd = open(cp, 2)) < 0) {
                     62:                printf("Known devices are: ");
                     63:                for (dp = devsw; dp->dv_name; dp++)
                     64:                        printf("%s ",dp->dv_name);
                     65:                printf("\n");
                     66:                goto top;
                     67:        }
                     68:        return (fd);
                     69: }
                     70: 
                     71: char *
                     72: prompt(msg)
                     73:        char *msg;
                     74: {
                     75:        static char buf[132];
                     76: 
                     77:        printf("%s", msg);
                     78:        gets(buf);
                     79:        return (buf);
                     80: }
                     81: 
                     82: /*
                     83:  * Allocate memory on a page-aligned address.
                     84:  * Round allocated chunk to a page multiple to
                     85:  * ease next request.
                     86:  */
                     87: char *
                     88: malloc(size)
                     89:        int size;
                     90: {
                     91:        char *result;
                     92:        static caddr_t last = 0;
                     93: 
                     94:        if (last == 0)
                     95:                last = (caddr_t)(((int)&end + 511) & ~0x1ff);
                     96:        size = (size + 511) & ~0x1ff;
                     97:        result = (char *)last;
                     98:        last += size;
                     99:        return (result);
                    100: }

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