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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2014 Joyent, Inc. All rights reserved.
*/
/*
* diff two CTF containers
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <strings.h>
#include <libctf.h>
#define CTFDIFF_EXIT_SIMILAR 0
#define CTFDIFF_EXIT_DIFFERENT 1
#define CTFDIFF_EXIT_ERROR 2
static const char *g_iname;
static ctf_file_t *g_ifp;
static const char *g_oname;
static ctf_file_t *g_ofp;
static char **g_typelist = NULL;
static int g_nexttype = 0;
static int g_ntypes = 0;
static boolean_t g_onlydiff = B_FALSE;
static boolean_t g_different = B_FALSE;
static const char *
fp_to_name(ctf_file_t *fp)
{
if (fp == g_ifp)
return (g_iname);
if (fp == g_ofp)
return (g_oname);
return (NULL);
}
/* ARGSUSED */
static void
diff_cb(ctf_file_t *ifp, ctf_id_t iid, boolean_t similar, ctf_file_t *ofp,
ctf_id_t oid, void *arg)
{
if (similar == B_TRUE)
return;
/*
* Check if it's the type the user cares about.
*/
if (g_nexttype != 0) {
int i;
char namebuf[256];
if (ctf_type_name(ifp, iid, namebuf, sizeof (namebuf)) ==
NULL) {
(void) fprintf(stderr, "failed to obtain the name "
"of type %ld from %s: %s\n",
iid, fp_to_name(ifp),
ctf_errmsg(ctf_errno(ifp)));
exit(CTFDIFF_EXIT_ERROR);
}
for (i = 0; i < g_nexttype; i++) {
if (strcmp(g_typelist[i], namebuf) == 0)
break;
}
if (i == g_nexttype)
return;
}
g_different = B_TRUE;
if (g_onlydiff == B_TRUE)
return;
(void) printf("fp %s type %ld ", fp_to_name(ifp), iid);
if (similar == B_TRUE) {
(void) printf("is the same as fp %s type %ld\n",
fp_to_name(ofp), oid);
} else {
(void) printf("is different\n");
}
}
int
main(int argc, char *argv[])
{
ctf_diff_flag_t flags = 0;
int err, c;
ctf_file_t *ifp, *ofp;
ctf_diff_t *cdp;
ctf_file_t *pifp = NULL;
ctf_file_t *pofp = NULL;
while ((c = getopt(argc, argv, "qIp:P:T:")) != -1) {
switch (c) {
case 'q':
g_onlydiff = B_TRUE;
break;
case 'p':
pifp = ctf_open(optarg, &err);
if (pifp == NULL) {
(void) fprintf(stderr, "ctfdiff: failed to "
"open parent input container %s: %s\n",
optarg, ctf_errmsg(err));
return (CTFDIFF_EXIT_ERROR);
}
break;
case 'I':
flags |= CTF_DIFF_F_IGNORE_INTNAMES;
break;
case 'P':
pofp = ctf_open(optarg, &err);
if (pofp == NULL) {
(void) fprintf(stderr, "ctfdiff: failed to "
"open parent output container %s: %s\n",
optarg, ctf_errmsg(err));
return (CTFDIFF_EXIT_ERROR);
}
break;
case 'T':
if (g_nexttype == g_ntypes) {
if (g_ntypes == 0)
g_ntypes = 16;
else
g_ntypes *= 2;
g_typelist = realloc(g_typelist,
sizeof (char *) * g_ntypes);
if (g_typelist == NULL) {
(void) fprintf(stderr, "ctfdiff: "
"failed to allocate memory for "
"the %dth -t option: %s\n",
g_nexttype + 1, strerror(errno));
}
}
g_typelist[g_nexttype] = optarg;
g_nexttype++;
}
}
argc -= optind - 1;
argv += optind - 1;
if (argc != 3) {
(void) fprintf(stderr, "usage: ctfdiff [-qI] [-p parent] "
"[-P parent] [-T type]... input output");
return (CTFDIFF_EXIT_ERROR);
}
ifp = ctf_open(argv[1], &err);
if (ifp == NULL) {
(void) fprintf(stderr, "ctfdiff: failed to open %s: %s\n",
argv[1], ctf_errmsg(err));
return (CTFDIFF_EXIT_ERROR);
}
if (pifp != NULL) {
err = ctf_import(ifp, pifp);
if (err != 0) {
(void) fprintf(stderr, "ctfdiff: failed to set parent "
"container: %s\n", ctf_errmsg(ctf_errno(pifp)));
return (CTFDIFF_EXIT_ERROR);
}
}
g_iname = argv[1];
g_ifp = ifp;
ofp = ctf_open(argv[2], &err);
if (ofp == NULL) {
(void) fprintf(stderr, "ctfdiff: failed to open %s: %s\n",
argv[2], ctf_errmsg(err));
return (CTFDIFF_EXIT_ERROR);
}
if (pofp != NULL) {
err = ctf_import(ofp, pofp);
if (err != 0) {
(void) fprintf(stderr, "ctfdiff: failed to set parent "
"container: %s\n", ctf_errmsg(ctf_errno(pofp)));
return (CTFDIFF_EXIT_ERROR);
}
}
g_oname = argv[2];
g_ofp = ofp;
if (ctf_diff_init(ifp, ofp, &cdp) != 0) {
(void) fprintf(stderr,
"ctfdiff: failed to initialize libctf diff engine: %s\n",
ctf_errmsg(ctf_errno(ifp)));
return (CTFDIFF_EXIT_ERROR);
}
if (ctf_diff_setflags(cdp, flags) != 0) {
(void) fprintf(stderr,
"ctfdiff: failed to set ctfdiff flags: %s\n",
ctf_errmsg(ctf_errno(ifp)));
}
err = ctf_diff_types(cdp, diff_cb, NULL);
ctf_diff_fini(cdp);
if (err == CTF_ERR) {
(void) fprintf(stderr, "encountered a libctf error: %s!\n",
ctf_errmsg(ctf_errno(ifp)));
return (CTFDIFF_EXIT_ERROR);
}
return (g_different == B_TRUE ? CTFDIFF_EXIT_DIFFERENT :
CTFDIFF_EXIT_SIMILAR);
}
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