static Spfcall*
ufs_read(Spfid *fid, u64 offset, u32 count, Spreq *req)
{
int n;
Fid *f;
Spfcall *ret;
f = fid->aux;
ret = sp_alloc_rread(count);
if (f->dir)
n = ufs_read_dir(fid, ret->data, offset, count, fid->conn->dotu);
else {
n = pread(f->fd, ret->data, count, offset);
if (n < 0)
create_rerror(errno);
}
if (sp_haserror()) {
free(ret);
ret = NULL;
} else
sp_set_rread_count(ret, n);
return ret;
}
static Spfcall*
npfs_read(Spfid *fid, u64 offset, u32 count, Spreq *req)
{
int n;
Fid *f;
Spfcall *ret;
f = fid->aux;
ret = sp_alloc_rread(count);
npfs_change_user(fid->user);
if (f->dir)
n = npfs_read_dir(f, ret->data, offset, count, fid->conn->dotu);
else {
if(mmapreads) {
struct stat s;
n = count;
if(!f->aux) {
fstat(f->fd, &s);
f->aux=mmap(0, s.st_size, PROT_READ,
MAP_SHARED, f->fd, 0);
if(f->aux < 0) {
create_rerror(errno);
goto error;
}
}
if(offset+count > s.st_size)
n = s.st_size-offset;
if(n>0)
memcpy(ret->data, f->aux+offset, n);
else
n = 0;
} else {
n = pread(f->fd, ret->data, count, offset);
if (n < 0)
create_rerror(errno);
}
}
error:
if (sp_haserror()) {
free(ret);
ret = NULL;
} else
sp_set_rread_count(ret, n);
return ret;
}
static void
xp_file_notify(Spcfd *spcfd, void *a)
{
int n, ecode;
char *ename;
Xpcopy *c;
Xpfile *f;
c = a;
f = c->cfile;
error:
if (sp_haserror()) {
sp_rerror(&ename, &ecode);
if (c->finish)
(*c->finish)(c, c->finishaux);
// spcfd_remove(spcfd);
return;
}
if (!spcfd_can_write(spcfd))
return;
if (f->pos >= f->buflen) {
if (!f->path)
goto next_file;
if (f->fd < 0) {
f->fd = open(f->path, O_RDONLY);
if (f->fd < 0) {
sp_uerror(errno);
goto error;
}
f->bufsize = Bufsize;
f->buf = malloc(f->bufsize);
if (!f->buf) {
sp_werror(Enomem, ENOMEM);
goto error;
}
}
n = read(f->fd, f->buf, f->bufsize);
if (n < 0) {
sp_uerror(errno);
goto error;
}
if (n == 0) {
close(f->fd);
f->fd = -1;
free(f->buf);
f->buf = NULL;
f->buflen = 0;
f->bufsize = 0;
f->pos = 0;
goto next_file;
}
f->buflen = n;
f->pos = 0;
}
n = spcfd_write(spcfd, f->buf + f->pos, f->buflen - f->pos);
if (n <= 0)
goto error;
f->pos += n;
return;
next_file:
spcfd_remove(f->spcfd);
f->spcfd = NULL;
c->cfile = f->next;
xp_file_copy(c);
}
