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Annotation of researchv9/sys/construct/host/rdfs.c, revision 1.1

1.1     ! root        1: #include "/usr/include/stdio.h"
        !             2: #include <sys/param.h>
        !             3: #include <sys/ino.h>
        !             4: #include <sys/inode.h>
        !             5: #include <sys/filsys.h>
        !             6: #include <sys/fblk.h>
        !             7: #include <sys/dir.h>
        !             8: 
        !             9: int    fsi;
        !            10: char   buf[BSIZE(0)];
        !            11: 
        !            12: main()
        !            13: {
        !            14:        short *s = (short *)buf;
        !            15:        int i;
        !            16: 
        !            17:        fsi = open("/dev/rsd1a", 0);
        !            18:        rdfs(1, buf);
        !            19:        for(i = 0; i < sizeof(buf)/2; i++)
        !            20:                if(*s++ != i)
        !            21:                        printf("%d is %d\n", i, *(s - 1));
        !            22: }
        !            23: 
        !            24: rdfs(bno, bf)
        !            25: daddr_t bno;
        !            26: char *bf;
        !            27: {
        !            28:        int n;
        !            29: 
        !            30:        lseek(fsi, bno*BSIZE(0), 0);
        !            31:        n = read(fsi, bf, BSIZE(0));
        !            32:        if(n != BSIZE(0)) {
        !            33:                printf("read error: %ld\n", bno);
        !            34:                exit(1);
        !            35:        }
        !            36: }
        !            37: 
        !            38: wrfs(bno, bf)
        !            39: daddr_t bno;
        !            40: char *bf;
        !            41: {
        !            42:        int n;
        !            43: 
        !            44:        lseek(fsi, bno*BSIZE(0), 0);
        !            45:        n = write(fsi, bf, BSIZE(0));
        !            46:        if(n != BSIZE(0)) {
        !            47:                printf("write error: %ld\n", bno);
        !            48:                exit(1);
        !            49:        }
        !            50: }

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