debug.c 27.23 KiB
/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lnet/utils/debug.c
* Some day I'll split all of this functionality into a cfs_debug module
* of its own. That day is not today.
*/
#define __USE_FILE_OFFSET64
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <libcfs/libcfsutil.h>
#include <lnet/lnetctl.h>
static char rawbuf[8192];
static char *buf = rawbuf;
static int max = 8192;
/*static int g_pfd = -1;*/
static int subsystem_mask = ~0;
static int debug_mask = ~0;
#define MAX_MARK_SIZE 256
static const char *libcfs_debug_subsystems[] =
{"undefined", "mdc", "mds", "osc",
"ost", "class", "log", "llite",
"rpc", "mgmt", "lnet", "lnd",
"pinger", "filter", "", "echo",
"ldlm", "lov", "lquota", "",
"", "", "", "lmv",
"", "sec", "gss", "",
"mgc", "mgs", "fid", "fld", NULL};
static const char *libcfs_debug_masks[] =
{"trace", "inode", "super", "ext2",
"malloc", "cache", "info", "ioctl", "neterror", "net", "warning", "buffs",
"other", "dentry", "nettrace", "page",
"dlmtrace", "error", "emerg", "ha",
"rpctrace", "vfstrace", "reada", "mmap",
"config", "console", "quota", "sec", NULL};
#ifdef __linux__
#define DAEMON_CTL_NAME "/proc/sys/lnet/daemon_file"
#define SUBSYS_DEBUG_CTL_NAME "/proc/sys/lnet/subsystem_debug"
#define DEBUG_CTL_NAME "/proc/sys/lnet/debug"
#define DUMP_KERNEL_CTL_NAME "/proc/sys/lnet/dump_kernel"
static int
dbg_open_ctlhandle(const char *str)
{
int fd;
fd = open(str, O_WRONLY);
if (fd < 0) {
fprintf(stderr, "open %s failed: %s\n", str,
strerror(errno));
return -1;
}
return fd;
}
static void
dbg_close_ctlhandle(int fd)
{
close(fd);
}
static int
dbg_write_cmd(int fd, char *str, int len)
{
int rc = write(fd, str, len);
return (rc == len ? 0 : 1);
}
#elif defined(__DARWIN__)
#define DAEMON_CTL_NAME "lnet.trace_daemon"
#define SUBSYS_DEBUG_CTL_NAME "lnet.subsystem_debug"
#define DEBUG_CTL_NAME "lnet.debug"
#define DUMP_KERNEL_CTL_NAME "lnet.trace_dumpkernel"
static char sysctl_name[128];
static int
dbg_open_ctlhandle(const char *str)
{
if (strlen(str)+1 > 128) {
fprintf(stderr, "sysctl name is too long: %s.\n", str);
return -1;
}
strcpy(sysctl_name, str);
return 0;
}
static void
dbg_close_ctlhandle(int fd)
{
sysctl_name[0] = '\0';
return;
}
static int
dbg_write_cmd(int fd, char *str, int len){
int rc;
rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
if (rc != 0) {
fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
sysctl_name, str, errno);
}
return (rc == 0 ? 0: 1);
}
#elif defined(__WINNT__)
#define DAEMON_CTL_NAME "/proc/sys/lnet/daemon_file"
#define SUBSYS_DEBUG_CTL_NAME "/proc/sys/lnet/subsystem_debug"
#define DEBUG_CTL_NAME "/proc/sys/lnet/debug"
#define DUMP_KERNEL_CTL_NAME "/proc/sys/lnet/dump_kernel"
static int
dbg_open_ctlhandle(const char *str)
{
int fd;
fd = cfs_proc_open((char *)str, (int)O_WRONLY);
if (fd < 0) {
fprintf(stderr, "open %s failed: %s\n", str,
strerror(errno));
return -1;
}
return fd;
}
static void
dbg_close_ctlhandle(int fd)
{
cfs_proc_close(fd);
}
static int
dbg_write_cmd(int fd, char *str, int len)
{
int rc = cfs_proc_write(fd, str, len);
return (rc == len ? 0 : 1);
}
#else
#error - Unknown sysctl convention.
#endif
static int do_debug_mask(char *name, int enable)
{
int found = 0, i;
for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
strcasecmp(name, "all_subs") == 0) {
printf("%s output from subsystem \"%s\"\n",
enable ? "Enabling" : "Disabling",
libcfs_debug_subsystems[i]);
if (enable)
subsystem_mask |= (1 << i);
else
subsystem_mask &= ~(1 << i);
found = 1;
}
}
for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
strcasecmp(name, "all_types") == 0) {
printf("%s output of type \"%s\"\n", enable ? "Enabling" : "Disabling",
libcfs_debug_masks[i]);
if (enable)
debug_mask |= (1 << i);
else
debug_mask &= ~(1 << i);
found = 1;
}
}
return found;
}
int dbg_initialize(int argc, char **argv)
{
return 0;
}
int jt_dbg_filter(int argc, char **argv)
{
int i;
if (argc < 2) {
fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
argv[0]);
return 0;
}
for (i = 1; i < argc; i++)
if (!do_debug_mask(argv[i], 0))
fprintf(stderr, "Unknown subsystem or debug type: %s\n",
argv[i]);
return 0;
}
int jt_dbg_show(int argc, char **argv)
{
int i;
if (argc < 2) {
fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
argv[0]);
return 0;
}
for (i = 1; i < argc; i++)
if (!do_debug_mask(argv[i], 1))
fprintf(stderr, "Unknown subsystem or debug type: %s\n",
argv[i]);
return 0;
}
static int applymask(char* procpath, int value)
{
int rc;
char buf[64];
int len = snprintf(buf, 64, "%d", value);
int fd = dbg_open_ctlhandle(procpath);
if (fd == -1) {
fprintf(stderr, "Unable to open %s: %s\n",
procpath, strerror(errno));
return fd;
}
rc = dbg_write_cmd(fd, buf, len+1);
if (rc != 0) {
fprintf(stderr, "Write to %s failed: %s\n",
procpath, strerror(errno));
}
dbg_close_ctlhandle(fd);
return rc;
}
static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
{
if (!dump_filename) {
applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
applymask(DEBUG_CTL_NAME, debug_mask);
} else {
struct libcfs_debug_ioctl_data data;
data.hdr.ioc_len = sizeof(data);
data.hdr.ioc_version = 0;
data.subs = subs_mask;
data.debug = debug_mask;
dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
}
printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
subs_mask, debug_mask);
}
int jt_dbg_list(int argc, char **argv)
{
int i;
if (argc != 2) {
fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
return 0;
}
if (strcasecmp(argv[1], "subs") == 0) {
printf("Subsystems: all_subs");
for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
if (libcfs_debug_subsystems[i][0])
printf(", %s", libcfs_debug_subsystems[i]);
printf("\n");
} else if (strcasecmp(argv[1], "types") == 0) {
printf("Types: all_types");
for (i = 0; libcfs_debug_masks[i] != NULL; i++)
printf(", %s", libcfs_debug_masks[i]);
printf("\n");
} else if (strcasecmp(argv[1], "applymasks") == 0) {
applymask_all(subsystem_mask, debug_mask);
}
return 0;
}
/* all strings nul-terminated; only the struct and hdr need to be freed */
struct dbg_line {
struct ptldebug_header *hdr;
char *file;
char *fn;
char *text;
};
static int cmp_rec(const void *p1, const void *p2)
{
struct dbg_line *d1 = *(struct dbg_line **)p1;
struct dbg_line *d2 = *(struct dbg_line **)p2;
if (d1->hdr->ph_sec < d2->hdr->ph_sec)
return -1;
if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
d1->hdr->ph_usec < d2->hdr->ph_usec)
return -1;
if (d1->hdr->ph_sec == d2->hdr->ph_sec && d1->hdr->ph_usec == d2->hdr->ph_usec)
return 0;
return 1;
}
static void print_rec(struct dbg_line **linev, int used, FILE *out)
{
int i;
for (i = 0; i < used; i++) {
struct dbg_line *line = linev[i];
struct ptldebug_header *hdr = line->hdr;
fprintf(out, "%08x:%08x:%u:%u." LPU64 ":%u:%u:%u:(%s:%u:%s()) %s",
hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
hdr->ph_sec, (unsigned long long)hdr->ph_usec,
hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
line->file, hdr->ph_line_num, line->fn, line->text);
free(line->hdr);
free(line);
}
free(linev);
}
static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
int used)
{
struct dbg_line **linev = *linevp;
if (used == *lenp) {
int nlen = *lenp + 512;
int nsize = nlen * sizeof(struct dbg_line *);
linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
if (!linev)
return 0;
*linevp = linev;
*lenp = nlen;
}
linev[used] = line;
return 1;
}
static int parse_buffer(FILE *in, FILE *out)
{
struct dbg_line *line;
struct ptldebug_header *hdr;
char buf[4097], *p;
int rc;
unsigned long dropped = 0, kept = 0;
struct dbg_line **linev = NULL;
int linev_len = 0;
while (1) {
rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
if (rc <= 0)
break;
hdr = (void *)buf;
if (hdr->ph_len == 0)
break;
if (hdr->ph_len > 4094) {
fprintf(stderr, "unexpected large record: %d bytes. "
"aborting.\n",
hdr->ph_len);
break;
}
rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in); if (rc <= 0)
break;
if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
(hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
dropped++;
continue;
}
line = malloc(sizeof(*line));
if (line == NULL) {
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
line->hdr = malloc(hdr->ph_len + 1);
if (line->hdr == NULL) {
free(line);
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
p = (void *)line->hdr;
memcpy(line->hdr, buf, hdr->ph_len);
p[hdr->ph_len] = '\0';
p += sizeof(*hdr);
line->file = p;
p += strlen(line->file) + 1;
line->fn = p;
p += strlen(line->fn) + 1;
line->text = p;
if (!add_rec(line, &linev, &linev_len, kept)) {
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
kept++;
}
if (linev) {
qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
print_rec(linev, kept, out);
}
printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
dropped + kept, kept, dropped);
return 0;
}
int jt_dbg_debug_kernel(int argc, char **argv)
{
char filename[4096];
struct stat st;
int rc, raw = 0, fd;
FILE *in, *out = stdout;
if (argc > 3) {
fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
return 0;
}
if (argc > 2) {
raw = atoi(argv[2]);
} else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
raw = atoi(argv[1]);
argc--; }
/* If we are dumping raw (which means no conversion step to ASCII)
* then dump directly to any supplied filename, otherwise this is
* just a temp file and we dump to the real file at convert time. */
if (argc > 1 && raw)
strcpy(filename, argv[1]);
else
sprintf(filename, "%s"CFS_TIME_T".%u",
DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
unlink(filename);
fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
if (fd < 0) {
fprintf(stderr, "open(dump_kernel) failed: %s\n",
strerror(errno));
return 1;
}
rc = dbg_write_cmd(fd, filename, strlen(filename));
if (rc != 0) {
fprintf(stderr, "write(%s) failed: %s\n", filename,
strerror(errno));
dbg_close_ctlhandle(fd);
return 1;
}
dbg_close_ctlhandle(fd);
if (raw)
return 0;
in = fopen(filename, "r");
if (in == NULL) {
if (errno == ENOENT) /* no dump file created */
return 0;
fprintf(stderr, "fopen(%s) failed: %s\n", filename,
strerror(errno));
return 1;
}
if (argc > 1) {
out = fopen(argv[1], "w");
if (out == NULL) {
fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
strerror(errno));
fclose(in);
return 1;
}
}
rc = parse_buffer(in, out);
fclose(in);
if (argc > 1)
fclose(out);
if (rc) {
fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
"behind.\n", filename);
} else {
rc = unlink(filename);
if (rc)
fprintf(stderr, "dumped successfully, but couldn't "
"unlink tmp file %s: %s\n", filename,
strerror(errno));
}
return rc;
}
int jt_dbg_debug_file(int argc, char **argv){
int fdin;
int fdout;
FILE *in;
FILE *out = stdout;
int rc;
if (argc > 3 || argc < 2) {
fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
return 0;
}
fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
if (fdin == -1) {
fprintf(stderr, "open(%s) failed: %s\n", argv[1],
strerror(errno));
return 1;
}
in = fdopen(fdin, "r");
if (in == NULL) {
fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
strerror(errno));
close(fdin);
return 1;
}
if (argc > 2) {
fdout = open(argv[2],
O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
0600);
if (fdout == -1) {
fprintf(stderr, "open(%s) failed: %s\n", argv[2],
strerror(errno));
fclose(in);
return 1;
}
out = fdopen(fdout, "w");
if (out == NULL) {
fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
strerror(errno));
fclose(in);
close(fdout);
return 1;
}
}
rc = parse_buffer(in, out);
fclose(in);
if (out != stdout)
fclose(out);
return rc;
}
const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
int jt_dbg_debug_daemon(int argc, char **argv)
{
int rc;
int fd;
if (argc <= 1) {
fprintf(stderr, debug_daemon_usage, argv[0]);
return 1;
}
fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
if (fd < 0)
return -1;
rc = -1;
if (strcasecmp(argv[1], "start") == 0) {
if (argc < 3 || argc > 4 ||
(argc == 4 && strlen(argv[3]) > 5)) {
fprintf(stderr, debug_daemon_usage, argv[0]);
goto out;
}
if (argc == 4) {
char buf[12];
const long min_size = 10;
const long max_size = 20480;
long size;
char *end;
size = strtoul(argv[3], &end, 0);
if (size < min_size ||
size > max_size ||
*end != 0) {
fprintf(stderr, "size %s invalid, must be in "
"the range %ld-%ld MB\n", argv[3],
min_size, max_size);
goto out;
}
snprintf(buf, sizeof(buf), "size=%ld", size);
rc = dbg_write_cmd(fd, buf, strlen(buf));
if (rc != 0) {
fprintf(stderr, "set %s failed: %s\n",
buf, strerror(errno));
goto out;
}
}
rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
if (rc != 0) {
fprintf(stderr, "start debug_daemon on %s failed: %s\n",
argv[2], strerror(errno));
goto out;
}
rc = 0;
goto out;
}
if (strcasecmp(argv[1], "stop") == 0) {
rc = dbg_write_cmd(fd, "stop", 4);
if (rc != 0) {
fprintf(stderr, "stopping debug_daemon failed: %s\n",
strerror(errno));
goto out;
}
rc = 0;
goto out;
}
fprintf(stderr, debug_daemon_usage, argv[0]);
rc = -1;
out:
dbg_close_ctlhandle(fd);
return rc;
}
int jt_dbg_clear_debug_buf(int argc, char **argv)
{
int rc;
struct libcfs_ioctl_data data;
if (argc != 1) {
fprintf(stderr, "usage: %s\n", argv[0]);
return 0;
}
memset(&data, 0, sizeof(data));
if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
fprintf(stderr, "libcfs_ioctl_pack failed.\n");
return -1;
}
rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
if (rc) {
fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
strerror(errno));
return -1;
}
return 0;
}
int jt_dbg_mark_debug_buf(int argc, char **argv)
{
static char scratch[MAX_MARK_SIZE] = { '\0' };
int rc, max_size = MAX_MARK_SIZE-1;
struct libcfs_ioctl_data data = { 0 };
char *text;
time_t now = time(NULL);
if (argc > 1) {
int count;
text = scratch;
strncpy(text, argv[1], max_size);
max_size-=strlen(argv[1]);
for (count = 2; (count < argc) && (max_size > 0); count++){
strncat(text, " ", max_size);
max_size -= 1;
strncat(text, argv[count], max_size);
max_size -= strlen(argv[count]);
}
} else {
text = ctime(&now);
}
data.ioc_inllen1 = strlen(text) + 1;
data.ioc_inlbuf1 = text;
if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
fprintf(stderr, "libcfs_ioctl_pack failed.\n");
return -1;
}
rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
if (rc) {
fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
strerror(errno));
return -1;
}
return 0;
}
static struct mod_paths {
char *name, *path;
} mod_paths[] = {
{"libcfs", "libcfs/libcfs"},
{"lnet", "lnet/lnet"},
{"kciblnd", "lnet/klnds/ciblnd"},
{"kgmlnd", "lnet/klnds/gmlnd"},
{"kmxlnd", "lnet/klnds/mxlnd"},
{"kiiblnd", "lnet/klnds/iiblnd"},
{"ko2iblnd", "lnet/klnds/o2iblnd"},
{"kopeniblnd", "lnet/klnds/openiblnd"},
{"kptllnd", "lnet/klnds/ptllnd"},
{"kqswlnd", "lnet/klnds/qswlnd"},
{"kralnd", "lnet/klnds/ralnd"},
{"ksocklnd", "lnet/klnds/socklnd"}, {"ktdilnd", "lnet/klnds/tdilnd"},
{"kviblnd", "lnet/klnds/viblnd"},
{"lvfs", "lustre/lvfs"},
{"obdclass", "lustre/obdclass"},
{"llog_test", "lustre/obdclass"},
{"ptlrpc_gss", "lustre/ptlrpc/gss"},
{"ptlrpc", "lustre/ptlrpc"},
{"gks", "lustre/sec/gks"},
{"gkc", "lustre/sec/gks"},
{"ost", "lustre/ost"},
{"osc", "lustre/osc"},
{"mds", "lustre/mds"},
{"mdc", "lustre/mdc"},
{"llite", "lustre/llite"},
{"lustre", "lustre/llite"},
{"llite_lloop", "lustre/llite"},
{"ldiskfs", "ldiskfs/ldiskfs"},
{"smfs", "lustre/smfs"},
{"obdecho", "lustre/obdecho"},
{"ldlm", "lustre/ldlm"},
{"obdfilter", "lustre/obdfilter"},
{"lov", "lustre/lov"},
{"lmv", "lustre/lmv"},
{"fsfilt_ext3", "lustre/lvfs"},
{"fsfilt_reiserfs", "lustre/lvfs"},
{"fsfilt_smfs", "lustre/lvfs"},
{"fsfilt_ldiskfs", "lustre/lvfs"},
{"mds_ext3", "lustre/mds"},
{"cobd", "lustre/cobd"},
{"cmobd", "lustre/cmobd"},
{"lquota", "lustre/quota"},
{"mgs", "lustre/mgs"},
{"mgc", "lustre/mgc"},
{"mdt", "lustre/mdt"},
{"mdd", "lustre/mdd"},
{"osd", "lustre/osd"},
{"cmm", "lustre/cmm"},
{"fid", "lustre/fid"},
{"fld", "lustre/fld"},
{NULL, NULL}
};
static int jt_dbg_modules_2_4(int argc, char **argv)
{
return -EINVAL;
}
static int jt_dbg_modules_2_5(int argc, char **argv)
{
struct mod_paths *mp;
char *path = "";
char *kernel = "linux";
const char *proc = "/proc/modules";
char modname[128], buf[4096];
long modaddr;
FILE *file;
if (argc >= 2)
path = argv[1];
if (argc == 3)
kernel = argv[2];
if (argc > 3) {
printf("%s [path] [kernel]\n", argv[0]);
return 0;
}
file = fopen(proc, "r");
if (!file) {
printf("failed open %s: %s\n", proc, strerror(errno));
return 0; }
while (fgets(buf, sizeof(buf), file) != NULL) {
if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
for (mp = mod_paths; mp->name != NULL; mp++) {
if (!strcmp(mp->name, modname))
break;
}
if (mp->name) {
printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
path, path[0] ? "/" : "",
mp->path, mp->name, modaddr);
}
}
}
fclose(file);
return 0;
}
int jt_dbg_modules(int argc, char **argv)
{
int rc = 0;
struct utsname sysinfo;
rc = uname(&sysinfo);
if (rc) {
printf("uname() failed: %s\n", strerror(errno));
return 0;
}
if (sysinfo.release[2] > '4') {
return jt_dbg_modules_2_5(argc, argv);
} else {
return jt_dbg_modules_2_4(argc, argv);
}
return 0;
}
int jt_dbg_panic(int argc, char **argv)
{
int rc;
struct libcfs_ioctl_data data;
if (argc != 1) {
fprintf(stderr, "usage: %s\n", argv[0]);
return 0;
}
memset(&data, 0, sizeof(data));
if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
fprintf(stderr, "libcfs_ioctl_pack failed.\n");
return -1;
}
rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
if (rc) {
fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
strerror(errno));
return -1;
}
return 0;
}