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/* SPDX-License-Identifier: MIT
* Copyright (c) 2022-2026 Leah Rowe <leah@libreboot.org>
*
* This tool lets you modify Intel GbE NVM (Gigabit Ethernet
* Non-Volatile Memory) images, e.g. change the MAC address.
* These images configure your Intel Gigabit Ethernet adapter.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "include/common.h"
int
main(int argc, char *argv[])
{
struct xstate *x;
struct commands *cmd;
struct xfile *f;
size_t c;
if (lbgetprogname(argv[0]) == NULL)
err_no_cleanup(0, errno, "could not set progname");
xpledgex("stdio flock rpath wpath cpath unveil", NULL);
xunveilx("/dev/urandom", "r");
#ifndef S_ISREG
err_no_cleanup(0, ECANCELED,
"Can't determine file types (S_ISREG undefined)");
#endif
#if ((CHAR_BIT) != 8)
err_no_cleanup(0, ECANCELED, "Unsupported char size");
#endif
if ((x = xstart(argc, argv)) == NULL)
err_no_cleanup(0, ECANCELED, "NULL state on init");
/* parse user command */
/* TODO: CHECK ACCESSES VIA xstatus() */
set_cmd(argc, argv);
set_cmd_args(argc, argv);
cmd = &x->cmd[x->i];
f = &x->f;
if ((cmd->flags & O_ACCMODE) == O_RDONLY)
xunveilx(f->fname, "r");
else
xunveilx(f->fname, "rwc");
xunveilx(f->tname, "rwc");
xunveilx(NULL, NULL);
xpledgex("stdio flock rpath wpath cpath", NULL);
if (cmd->run == NULL)
b0rk(errno, "Command not set");
sanitize_command_list();
open_gbe_file();
copy_gbe();
read_checksums();
cmd->run();
for (c = 0; c < items(x->cmd); c++)
x->cmd[c].run = cmd_helper_err;
if ((cmd->flags & O_ACCMODE) == O_RDWR)
write_to_gbe_bin();
if (exit_cleanup() == -1)
b0rk(EIO, "%s: close", f->fname);
if (f->io_err_gbe_bin)
b0rk(EIO, "%s: error writing final file");
free_and_set_null(&f->tname);
return EXIT_SUCCESS;
}
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