/*
* Metadata Management
*/
void
unpfs_stat(Ixp9Req *r)
{
int ret = 0;
struct stat stbuf;
struct unpfs_fid *fid = r->fid->aux;
int size;
IxpMsg m;
struct IxpStat s;
char *buf, *name = strdup(fid->path);
unpfs_log(LOG_NOTICE, "%s: fid=%u real_path=%s\n",
__func__, r->fid->fid, fid->real_path);
if (!name || lstat(fid->real_path, &stbuf) < 0) {
ret = errno;
goto out;
}
stat_posix_to_9p(&s, basename(name), &stbuf);
/* Pack the stat to the binary */
size = ixp_sizeof_stat(&s);
buf = ixp_emallocz(size);
m = ixp_message(buf, size, MsgPack);
ixp_pstat(&m, &s);
zfree(&name);
r->fid->qid = s.qid;
r->ofcall.rstat.nstat = size;
r->ofcall.rstat.stat = (uint8_t *)m.data;
out:
respond(r, ret);
}
void
ixp_pstat(IxpMsg *msg, Stat *stat) {
ushort size;
if(msg->mode == MsgPack)
size = ixp_sizeof_stat(stat) - 2;
ixp_pu16(msg, &size);
ixp_pu16(msg, &stat->type);
ixp_pu32(msg, &stat->dev);
ixp_pqid(msg, &stat->qid);
ixp_pu32(msg, &stat->mode);
ixp_pu32(msg, &stat->atime);
ixp_pu32(msg, &stat->mtime);
ixp_pu64(msg, &stat->length);
ixp_pstring(msg, &stat->name);
ixp_pstring(msg, &stat->uid);
ixp_pstring(msg, &stat->gid);
ixp_pstring(msg, &stat->muid);
}
void
ixp_srv_readdir(Ixp9Req *req, IxpLookupFn lookup, void (*dostat)(IxpStat*, IxpFileId*)) {
IxpMsg msg;
IxpFileId *file, *tfile;
IxpStat stat;
char *buf;
ulong size, n;
uint64_t offset;
file = req->fid->aux;
size = req->ifcall.io.count;
if(size > req->fid->iounit)
size = req->fid->iounit;
buf = emallocz(size);
msg = ixp_message(buf, size, MsgPack);
file = lookup(file, nil);
tfile = file;
/* Note: The first file is ".", so we skip it. */
offset = 0;
for(file=file->next; file; file=file->next) {
dostat(&stat, file);
n = ixp_sizeof_stat(&stat);
if(offset >= req->ifcall.io.offset) {
if(size < n)
break;
ixp_pstat(&msg, &stat);
size -= n;
}
offset += n;
}
while((file = tfile)) {
tfile=tfile->next;
ixp_srv_freefile(file);
}
req->ofcall.io.count = msg.pos - msg.data;
req->ofcall.io.data = msg.data;
ixp_respond(req, nil);
}
