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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 <stdio.h>
#include <sys/types.h>
#include <argp.h>
#include "arguments.h"
#include "dump.h"
#include "introspection.h"
#include "patches.h"
extern struct ulp_metadata ulp;
static void
dump_metadata(struct ulp_metadata *ulp, int buildid_only)
{
struct ulp_object *obj;
struct ulp_unit *unit;
struct ulp_reference *ref;
const char *buildid_string = buildid_to_string(ulp->patch_id);
if (ulp) {
if (!buildid_only) {
fprintf(stdout, "patch id: %s\n", buildid_string);
fprintf(stdout, "so filename: %s\n", ulp->so_filename);
}
obj = ulp->objs;
if (obj) {
buildid_string = buildid_to_string((unsigned char *)obj->build_id);
if (!buildid_only) {
fprintf(stdout, "\n* build id: %s\n", buildid_string);
}
else {
fprintf(stdout, "%s\n", buildid_string);
}
if (obj->name && !buildid_only) {
fprintf(stdout, "* name: %s\n", obj->name);
}
else if (!buildid_only) {
fprintf(stdout, "* name: \n");
}
if (!buildid_only) {
fprintf(stdout, "* units: %d\n", obj->nunits);
}
unit = obj->units;
while (unit && !buildid_only) {
fprintf(stdout, "\n** old_fname: %s\n", unit->old_fname);
fprintf(stdout, "** new_fname: %s\n", unit->new_fname);
fprintf(stdout, "** old_faddr: %p\n", unit->old_faddr);
unit = unit->next;
}
/* Show static references: */
fprintf(stdout, "\nstatic references: %d\n", ulp->nrefs);
for (ref = ulp->refs; ref != NULL; ref = ref->next) {
fprintf(stdout, "*** ref_name: %s\n", ref->reference_name);
fprintf(stdout, "*** target_offset: %lx\n", ref->target_offset);
fprintf(stdout, "*** patch_offset: %lx\n", ref->target_offset);
fprintf(stdout, "*** tls variable: %s\n\n", ref->tls ? "yes" : "no");
}
}
}
}
static void
dump_ulp_comments(const char *lib)
{
char *out;
extract_ulp_comment_to_mem(lib, &out);
if (out == NULL)
return;
printf("* comments: \n");
puts(out);
free(out);
}
int
run_dump(struct arguments *arguments)
{
char *livepatch;
size_t livepatch_size;
bool revert = arguments->revert;
livepatch_size =
extract_ulp_from_so_to_mem(arguments->args[0], revert, &livepatch, NULL);
if (!livepatch) {
WARN("Unable to extract metadata file from %s", arguments->args[0]);
return 1;
}
if (load_patch_info_from_mem(livepatch, livepatch_size)) {
WARN("error parsing the metadata file (%s).", arguments->args[0]);
free(livepatch);
return 1;
}
dump_metadata(&ulp, arguments->buildid);
dump_ulp_comments(arguments->args[0]);
free(livepatch);
return 0;
}
struct argp_option *
get_command_option_dump(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 },
{ "buildid", 'b', 0, 0, "Print the build id", 0 },
{ "revert", ULP_OP_REVERT, 0, 0,
"dump reverse patch info.", 0 },
{ 0 }
};
return options;
}
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