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/*
* libpulp - User-space Livepatching Library
*
* Copyright (C) 2017-2021 SUSE Software Solutions GmbH
*
* This file is part of libpulp.
*
* libpulp is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* libpulp 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libpulp. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libelf.h>
#include <stdio.h>
#include <unistd.h>
#include <argp.h>
#include "arguments.h"
#include "config.h"
#include "introspection.h"
#include "livepatchable.h"
#include "msg_queue.h"
#include "post.h"
#include "ulp_common.h"
int
run_livepatchable(struct arguments *arguments)
{
int ret = 0;
int fd;
/* Set the verbosity level in the common introspection infrastructure. */
ulp_verbose = arguments->verbose;
ulp_quiet = arguments->quiet;
fd = open(arguments->args[0], 0);
if (fd == -1)
errx(EXIT_FAILURE, "Unable to open file '%s': %s.\n", arguments->args[0],
strerror(errno));
elf_version(EV_CURRENT);
Elf *elf = elf_begin(fd, ELF_C_READ, NULL);
struct Elf_Scn *scn =
find_section_by_name(elf, "__patchable_function_entries");
if (scn == NULL) {
WARN("file '%s' is not livepatchable: Missing "
"__patchable_function_entries section.",
arguments->args[0]);
ret = 1;
}
else {
WARN("file '%s' is livepatchable.", arguments->args[0]);
ret = 0;
}
elf_end(elf);
close(fd);
return ret;
}
struct argp_option *
get_command_option_livepatchable(void)
{
static struct argp_option options[] = {
{ 0, 0, 0, 0, "Options:", 0 },
{ "verbose", 'v', 0, 0, "Produce verbose output", 0 },
{ "quiet", 'q', 0, 0, "Don't produce any output", 0 },
{ 0 }
};
return options;
}
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