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Annotation of researchv10no/cmd/worm/wreset.c, revision 1.1.1.1

1.1       root        1: #include       <libc.h>
                      2: #include       "worm.h"
                      3: #include       <sys/types.h>
                      4: #include       <sys/udaioc.h>
                      5: 
                      6: main(argc, argv)
                      7:        char **argv;
                      8: {
                      9:        Superblock s;
                     10:        char *e, *vol_id = 0;
                     11:        char buf[1024];
                     12:        char *dev = "/dev/worm0";
                     13:        int c;
                     14:        extern char *optarg;
                     15:        extern int optind;
                     16: 
                     17:        while((c = getopt(argc, argv, "f:")) != -1)
                     18:                switch(c)
                     19:                {
                     20:                case 'f':       dev = optarg; break;
                     21:                case '?':       usage();
                     22:                }
                     23:        if(optind != argc)
                     24:                usage();
                     25:        dev = mapdev(dev);
                     26:        if((s.fd = open(dev, 2)) < 0){
                     27:                if(!vol_id)
                     28:                        perror(dev);
                     29:                exit(2);
                     30:        }
                     31:        /*
                     32:                normally, you have to read to bring the drive online.
                     33:                however, when you are likely to call reset, the drive
                     34:                is online and blocked so skip the read
                     35:        */
                     36:        /*lseek(s.fd, 1024L, 0);
                     37:        read(s.fd, buf, sizeof buf);/**/
                     38:        if(ioctl(s.fd, UIORST) < 0)
                     39:                perror("reset ioctl");
                     40:        exit(0);
                     41: }
                     42: 
                     43: usage()
                     44: {
                     45:        print("Usage: worm reset [-fdevice]\n");
                     46:        exit(2);
                     47: }

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