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<title>/usr/web/sources/contrib/cinap_lenrek/ktags.c - Plan 9 from Bell Labs</title>
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<span style="font-size: 10pt"><a href="/plan9/">Plan 9 from Bell Labs</a>’s /usr/web/sources/contrib/cinap_lenrek/ktags.c</span></p>
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Copyright © 2009 Alcatel-Lucent.<br />
Distributed under the
<a href="/plan9/license.html">Lucent Public License version 1.02</a>.
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<a href="/plan9/download.html">Download the Plan 9 distribution.</a>
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#include <u.h>
#include <libc.h>
typedef uvlong Off;
typedef struct Tag Tag;
typedef struct Fbuf Fbuf;
typedef struct Super1 Super1;
typedef struct Superb Superb;
struct Tag
{
short pad; /* make tag end at a long boundary */
short tag;
Off path;
};
enum {
RBUFSIZE = 8*1024,
BUFSIZE = RBUFSIZE-sizeof(Tag),
};
struct Super1
{
Off fstart;
Off fsize;
Off tfree;
Off qidgen; /* generator for unique ids */
/*
* Stuff for WWC device
*/
Off cwraddr; /* cfs root addr */
Off roraddr; /* dump root addr */
Off last; /* last super block addr */
Off next; /* next super block addr */
};
enum {
FEPERBUF = (BUFSIZE-sizeof(Super1)-sizeof(Off)) / sizeof(Off),
};
struct Fbuf
{
Off nfree;
Off free[FEPERBUF];
};
struct Superb
{
Fbuf fbuf;
Super1;
};
uchar buf[RBUFSIZE];
Off start = 0;
void
main(void)
{
Tag *t;
Superb *s;
t = (Tag*)(buf+BUFSIZE);
s = (Superb*)buf;
start = seek(0, start*RBUFSIZE, 0) / RBUFSIZE;
for(;;){
if(read(0, buf, RBUFSIZE) != RBUFSIZE){
fprint(2, "read: %r\n");
exits("read");
}
//print("%llud %d %llud\n", start, t->tag, t->path);
if(t->tag == 1 && t->path == 2){
print("%llud "
"fstart %llud fsize %llud "
"cwraddr %llud roraddr %llud "
"last %llud next %llud\n",
start,
s->fstart, s->fsize,
s->cwraddr,
s->roraddr,
s->last, s->next);
}
start++;
}
}
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