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/* Write a store to stdout
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include <unistd.h>
#include <argp.h>
#include <error.h>
#include <hurd/store.h>
int
main (int argc, char **argv)
{
error_t err;
struct store *s;
char *name;
off_t addr;
size_t left;
const struct argp_child kids[] = { { &store_argp }, { 0 }};
struct argp argp =
{ 0, 0, 0, "Write the contents of a store to stdout", kids };
struct store_argp_params p = { 0 };
argp_parse (&argp, argc, argv, 0, 0, &p);
err = store_parsed_name (p.result, &name);
if (err)
error (2, err, "store_parsed_name");
err = store_parsed_open (p.result, STORE_READONLY, &s);
if (err)
error (4, err, "%s", name);
addr = 0;
left = s->size;
while (left > 0)
{
size_t read = left > 1024*1024 ? 1024*1024 : left;
char buf[4096];
void *data = buf;
size_t data_len = sizeof (buf);
err = store_read (s, addr, read, &data, &data_len);
if (err)
error (5, err, "%s", name);
if (write (1, data, data_len) < 0)
error (6, errno, "stdout");
addr += data_len >> s->log2_block_size;
left -= data_len;
}
exit (0);
}
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