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hjfs: statw command

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This commit is contained in:
aiju 2012-09-27 15:06:42 +02:00
parent 72061412ce
commit 45f76d6191
1 changed files with 31 additions and 0 deletions
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31
sys/src/cmd/hjfs/cons.c
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@ -166,6 +166,36 @@ cmdecho(int, char **argv)
return 1;
}
int
cmdstatw(int, char **)
{
uvlong n;
uvlong i;
int j;
Buf *b, *sb;
wlock(fsmain);
sb = getbuf(fsmain->d, SUPERBLK, TSUPERBLOCK, 0);
if(sb == nil){
wunlock(fsmain);
return -1;
}
n = 0;
for(i = sb->sb.fstart; i < sb->sb.fend; i++){
b = getbuf(fsmain->d, i, TREF, 0);
if(b == nil)
continue;
for(j = 0; j < REFPERBLK; j++)
if(b->refs[j] == 0)
n++;
putbuf(b);
}
dprint("hjfs: free %uld, used %uld, total %uld\n", n, sb->sb.size, sb->sb.size - n);
putbuf(sb);
wunlock(fsmain);
return 1;
}
extern int cmdnewuser(int, char **);
Cmd cmds[] = {
@ -178,6 +208,7 @@ Cmd cmds[] = {
{"halt", 1, cmdhalt},
{"newuser", 0, cmdnewuser},
{"echo", 2, cmdecho},
{"statw", 1, cmdstatw},
};