cregit-Linux how code gets into the kernel

Release 4.7 tools/objtool/objtool.c

Directory: tools/objtool
/*
 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
 *
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 */

/*
 * objtool:
 *
 * The 'check' subcmd analyzes every .o file and ensures the validity of its
 * stack trace metadata.  It enforces a set of rules on asm code and C inline
 * assembly code so that stack traces can be reliable.
 *
 * For more information, see tools/objtool/Documentation/stack-validation.txt.
 */

#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <subcmd/exec-cmd.h>
#include <subcmd/pager.h>

#include "builtin.h"


#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))


struct cmd_struct {
	
const char *name;
	
int (*fn)(int, const char **);
	
const char *help;
};


static const char objtool_usage_string[] =
	"objtool [OPTIONS] COMMAND [ARGS]";


static struct cmd_struct objtool_cmds[] = {
	{"check",	cmd_check,	"Perform stack metadata validation on an object file" },
};


bool help;


static void cmd_usage(void) { unsigned int i, longest = 0; printf("\n usage: %s\n\n", objtool_usage_string); for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) { if (longest < strlen(objtool_cmds[i].name)) longest = strlen(objtool_cmds[i].name); } puts(" Commands:"); for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) { printf(" %-*s ", longest, objtool_cmds[i].name); puts(objtool_cmds[i].help); } printf("\n"); exit(1); }

Contributors

PersonTokensPropCommitsCommitProp
josh poimboeufjosh poimboeuf124100.00%1100.00%
Total124100.00%1100.00%


static void handle_options(int *argc, const char ***argv) { while (*argc > 0) { const char *cmd = (*argv)[0]; if (cmd[0] != '-') break; if (!strcmp(cmd, "--help") || !strcmp(cmd, "-h")) { help = true; break; } else { fprintf(stderr, "Unknown option: %s\n", cmd); fprintf(stderr, "\n Usage: %s\n", objtool_usage_string); exit(1); } (*argv)++; (*argc)--; } }

Contributors

PersonTokensPropCommitsCommitProp
josh poimboeufjosh poimboeuf112100.00%1100.00%
Total112100.00%1100.00%


static void handle_internal_command(int argc, const char **argv) { const char *cmd = argv[0]; unsigned int i, ret; for (i = 0; i < ARRAY_SIZE(objtool_cmds); i++) { struct cmd_struct *p = objtool_cmds+i; if (strcmp(p->name, cmd)) continue; ret = p->fn(argc, argv); exit(ret); } cmd_usage(); }

Contributors

PersonTokensPropCommitsCommitProp
josh poimboeufjosh poimboeuf89100.00%1100.00%
Total89100.00%1100.00%


int main(int argc, const char **argv) { static const char *UNUSED = "OBJTOOL_NOT_IMPLEMENTED"; /* libsubcmd init */ exec_cmd_init("objtool", UNUSED, UNUSED, UNUSED); pager_init(UNUSED); argv++; argc--; handle_options(&argc, &argv); if (!argc || help) cmd_usage(); handle_internal_command(argc, argv); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
josh poimboeufjosh poimboeuf74100.00%1100.00%
Total74100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
josh poimboeufjosh poimboeuf485100.00%1100.00%
Total485100.00%1100.00%
Directory: tools/objtool
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