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Annotation of 43BSD/sys/stand/drtest.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)drtest.c    7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Standalone program to test a disk and driver
        !            11:  * by reading the disk a track at a time.
        !            12:  */
        !            13: #include "../h/param.h"
        !            14: #include "../h/inode.h"
        !            15: #include "../h/fs.h"
        !            16: #include "saio.h"
        !            17: 
        !            18: #define SECTSIZ        512
        !            19: 
        !            20: extern int end;
        !            21: char   *malloc();
        !            22: char   *prompt();
        !            23: 
        !            24: main()
        !            25: {
        !            26:        char *cp, *bp;
        !            27:        int fd, tracksize, debug;
        !            28:        register int sector, lastsector;
        !            29:        struct st st;
        !            30: 
        !            31:        printf("Testprogram for stand-alone driver\n\n");
        !            32: again:
        !            33:        cp = prompt("Enable debugging (1=bse, 2=ecc, 3=bse+ecc)? ");
        !            34:        debug = atoi(cp);
        !            35:        if (debug < 0)
        !            36:                debug = 0;
        !            37:        fd = getdevice();
        !            38:        ioctl(fd, SAIODEVDATA, (char *)&st);
        !            39:        printf("Device data: #cylinders=%d, #tracks=%d, #sectors=%d\n",
        !            40:                st.ncyl, st.ntrak, st.nsect);
        !            41:        ioctl(fd, SAIODEBUG, (char *)debug);
        !            42:        tracksize = st.nsect * SECTSIZ;
        !            43:        bp = malloc(tracksize);
        !            44:        printf("Reading in %d byte records\n", tracksize);
        !            45:        printf("Start ...make sure drive is on-line\n");
        !            46:        lseek(fd, 0, 0);
        !            47:        lastsector = st.ncyl * st.nspc;
        !            48:        for (sector = 0; sector < lastsector; sector += st.nsect) {
        !            49:                if (sector && (sector % (st.nspc * 10)) == 0)
        !            50:                        printf("cylinder %d\n", sector/st.nspc);
        !            51:                read(fd, bp, tracksize);
        !            52:        }
        !            53:        goto again;
        !            54: }
        !            55: 
        !            56: /*
        !            57:  * Prompt and verify a device name from the user.
        !            58:  */
        !            59: getdevice()
        !            60: {
        !            61:        register char *cp;
        !            62:        register struct devsw *dp;
        !            63:        int fd;
        !            64: 
        !            65: top:
        !            66:        cp = prompt("Device to read? ");
        !            67:        if ((fd = open(cp, 2)) < 0) {
        !            68:                printf("Known devices are: ");
        !            69:                for (dp = devsw; dp->dv_name; dp++)
        !            70:                        printf("%s ",dp->dv_name);
        !            71:                printf("\n");
        !            72:                goto top;
        !            73:        }
        !            74:        return (fd);
        !            75: }
        !            76: 
        !            77: char *
        !            78: prompt(msg)
        !            79:        char *msg;
        !            80: {
        !            81:        static char buf[132];
        !            82: 
        !            83:        printf("%s", msg);
        !            84:        gets(buf);
        !            85:        return (buf);
        !            86: }
        !            87: 
        !            88: /*
        !            89:  * Allocate memory on a page-aligned address.
        !            90:  * Round allocated chunk to a page multiple to
        !            91:  * ease next request.
        !            92:  */
        !            93: char *
        !            94: malloc(size)
        !            95:        int size;
        !            96: {
        !            97:        char *result;
        !            98:        static caddr_t last = 0;
        !            99: 
        !           100:        if (last == 0)
        !           101:                last = (caddr_t)(((int)&end + 511) & ~0x1ff);
        !           102:        size = (size + 511) & ~0x1ff;
        !           103:        result = (char *)last;
        !           104:        last += size;
        !           105:        return (result);
        !           106: }

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