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Reindent the read/write code of bd_realstrategy() so it is more readable.

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MFC after:	1 week
This commit is contained in:
John Baldwin 2007-10-24 04:13:35 +00:00
parent 5c5b5d4607
commit 08981e2f6d
1 changed files with 30 additions and 39 deletions
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69
sys/boot/i386/libi386/biosdisk.c
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@ -788,59 +788,50 @@ bd_realstrategy(void *devdata, int rw, daddr_t dblk, size_t size, char *buf, siz
#endif
DEBUG("open_disk %p", od);
switch(rw){
case F_READ:
blks = size / BIOSDISK_SECSIZE;
DEBUG("read %d from %d to %p", blks, dblk, buf);
if (rsize)
*rsize = 0;
if (blks && bd_read(od, dblk, blks, buf)) {
DEBUG("read error");
return (EIO);
}
switch(rw){
case F_READ:
DEBUG("read %d from %d to %p", blks, dblk, buf);
if (blks && bd_read(od, dblk, blks, buf)) {
DEBUG("read error");
return (EIO);
}
#ifdef BD_SUPPORT_FRAGS
DEBUG("bd_strategy: frag read %d from %d+%d to %p",
fragsize, dblk, blks, buf + (blks * BIOSDISK_SECSIZE));
if (fragsize && bd_read(od, dblk + blks, 1, fragsize)) {
DEBUG("frag read error");
return(EIO);
}
bcopy(fragbuf, buf + (blks * BIOSDISK_SECSIZE), fragsize);
DEBUG("bd_strategy: frag read %d from %d+%d to %p",
fragsize, dblk, blks, buf + (blks * BIOSDISK_SECSIZE));
if (fragsize && bd_read(od, dblk + blks, 1, fragsize)) {
DEBUG("frag read error");
return(EIO);
}
bcopy(fragbuf, buf + (blks * BIOSDISK_SECSIZE), fragsize);
#endif
if (rsize)
*rsize = size;
return (0);
break;
break;
case F_WRITE :
DEBUG("write %d from %d to %p", blks, dblk, buf);
case F_WRITE :
blks = size / BIOSDISK_SECSIZE;
DEBUG("write %d from %d to %p", blks, dblk, buf);
if (rsize)
*rsize = 0;
if (blks && bd_write(od, dblk, blks, buf)) {
DEBUG("write error");
return (EIO);
}
if (blks && bd_write(od, dblk, blks, buf)) {
DEBUG("write error");
return (EIO);
}
#ifdef BD_SUPPORT_FRAGS
if(fragsize) {
DEBUG("Attempted to write a frag");
return (EIO);
DEBUG("Attempted to write a frag");
return (EIO);
}
#endif
break;
default:
/* DO NOTHING */
return (EROFS);
}
if (rsize)
*rsize = size;
return (0);
default:
/* DO NOTHING */
break;
}
return EROFS;
}
/* Max number of sectors to bounce-buffer if the request crosses a 64k boundary */