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Diffstat (limited to '')
| -rw-r--r-- | src/debug.c | 1467 |
1 files changed, 1467 insertions, 0 deletions
diff --git a/src/debug.c b/src/debug.c new file mode 100644 index 0000000..6d510e9 --- /dev/null +++ b/src/debug.c @@ -0,0 +1,1467 @@ +/* + * Process debugging functions. + * + * Copyright 2000-2019 Willy Tarreau <willy@haproxy.org>. + * + * 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. + * + */ + + +#include <errno.h> +#include <fcntl.h> +#include <signal.h> +#include <time.h> +#include <stdio.h> +#include <stdlib.h> +#include <syslog.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#ifdef USE_EPOLL +#include <sys/epoll.h> +#endif + +#include <haproxy/api.h> +#include <haproxy/applet.h> +#include <haproxy/buf.h> +#include <haproxy/cli.h> +#include <haproxy/clock.h> +#include <haproxy/debug.h> +#include <haproxy/fd.h> +#include <haproxy/global.h> +#include <haproxy/hlua.h> +#include <haproxy/http_ana.h> +#include <haproxy/log.h> +#include <haproxy/net_helper.h> +#include <haproxy/sc_strm.h> +#include <haproxy/stconn.h> +#include <haproxy/task.h> +#include <haproxy/thread.h> +#include <haproxy/time.h> +#include <haproxy/tools.h> +#include <import/ist.h> + + +/* mask of threads still having to dump, used to respect ordering. Only used + * when USE_THREAD_DUMP is set. + */ +volatile unsigned long threads_to_dump = 0; +unsigned int panic_started = 0; +unsigned int debug_commands_issued = 0; + +/* dumps a backtrace of the current thread that is appended to buffer <buf>. + * Lines are prefixed with the string <prefix> which may be empty (used for + * indenting). It is recommended to use this at a function's tail so that + * the function does not appear in the call stack. The <dump> argument + * indicates what dump state to start from, and should usually be zero. It + * may be among the following values: + * - 0: search usual callers before step 1, or directly jump to 2 + * - 1: skip usual callers before step 2 + * - 2: dump until polling loop, scheduler, or main() (excluded) + * - 3: end + * - 4-7: like 0 but stops *after* main. + */ +void ha_dump_backtrace(struct buffer *buf, const char *prefix, int dump) +{ + struct buffer bak; + char pfx2[100]; + void *callers[100]; + int j, nptrs; + const void *addr; + + nptrs = my_backtrace(callers, sizeof(callers)/sizeof(*callers)); + if (!nptrs) + return; + + if (snprintf(pfx2, sizeof(pfx2), "%s| ", prefix) > sizeof(pfx2)) + pfx2[0] = 0; + + /* The call backtrace_symbols_fd(callers, nptrs, STDOUT_FILENO would + * produce similar output to the following: + */ + chunk_appendf(buf, "%scall trace(%d):\n", prefix, nptrs); + for (j = 0; (j < nptrs || (dump & 3) < 2); j++) { + if (j == nptrs && !(dump & 3)) { + /* we failed to spot the starting point of the + * dump, let's start over dumping everything we + * have. + */ + dump += 2; + j = 0; + } + bak = *buf; + dump_addr_and_bytes(buf, pfx2, callers[j], 8); + addr = resolve_sym_name(buf, ": ", callers[j]); + if ((dump & 3) == 0) { + /* dump not started, will start *after* + * ha_thread_dump_all_to_trash, ha_panic and ha_backtrace_to_stderr + */ + if (addr == ha_thread_dump_all_to_trash || addr == ha_panic || + addr == ha_backtrace_to_stderr) + dump++; + *buf = bak; + continue; + } + + if ((dump & 3) == 1) { + /* starting */ + if (addr == ha_thread_dump_all_to_trash || addr == ha_panic || + addr == ha_backtrace_to_stderr) { + *buf = bak; + continue; + } + dump++; + } + + if ((dump & 3) == 2) { + /* still dumping */ + if (dump == 6) { + /* we only stop *after* main and we must send the LF */ + if (addr == main) { + j = nptrs; + dump++; + } + } + else if (addr == run_poll_loop || addr == main || addr == run_tasks_from_lists) { + dump++; + *buf = bak; + break; + } + } + /* OK, line dumped */ + chunk_appendf(buf, "\n"); + } +} + +/* dump a backtrace of current thread's stack to stderr. */ +void ha_backtrace_to_stderr(void) +{ + char area[2048]; + struct buffer b = b_make(area, sizeof(area), 0, 0); + + ha_dump_backtrace(&b, " ", 4); + if (b.data) + DISGUISE(write(2, b.area, b.data)); +} + +/* Dumps to the buffer some known information for the desired thread, and + * optionally extra info for the current thread. The dump will be appended to + * the buffer, so the caller is responsible for preliminary initializing it. + * The calling thread ID needs to be passed in <calling_tid> to display a star + * in front of the calling thread's line (usually it's tid). Any stuck thread + * is also prefixed with a '>'. + */ +void ha_thread_dump(struct buffer *buf, int thr, int calling_tid) +{ + unsigned long thr_bit = 1UL << thr; + unsigned long long p = ha_thread_ctx[thr].prev_cpu_time; + unsigned long long n = now_cpu_time_thread(thr); + int stuck = !!(ha_thread_ctx[thr].flags & TH_FL_STUCK); + + chunk_appendf(buf, + "%c%cThread %-2u: id=0x%llx act=%d glob=%d wq=%d rq=%d tl=%d tlsz=%d rqsz=%d\n" + " %2u/%-2u stuck=%d prof=%d", + (thr == calling_tid) ? '*' : ' ', stuck ? '>' : ' ', thr + 1, + ha_get_pthread_id(thr), + thread_has_tasks(), + !!(global_tasks_mask & thr_bit), + !eb_is_empty(&ha_thread_ctx[thr].timers), + !eb_is_empty(&ha_thread_ctx[thr].rqueue), + !(LIST_ISEMPTY(&ha_thread_ctx[thr].tasklets[TL_URGENT]) && + LIST_ISEMPTY(&ha_thread_ctx[thr].tasklets[TL_NORMAL]) && + LIST_ISEMPTY(&ha_thread_ctx[thr].tasklets[TL_BULK]) && + MT_LIST_ISEMPTY(&ha_thread_ctx[thr].shared_tasklet_list)), + ha_thread_ctx[thr].tasks_in_list, + ha_thread_ctx[thr].rq_total, + ha_thread_info[thr].tg->tgid, ha_thread_info[thr].ltid + 1, + stuck, + !!(task_profiling_mask & thr_bit)); + + chunk_appendf(buf, + " harmless=%d wantrdv=%d", + !!(threads_harmless_mask & thr_bit), + !!(threads_want_rdv_mask & thr_bit)); + + chunk_appendf(buf, "\n"); + chunk_appendf(buf, " cpu_ns: poll=%llu now=%llu diff=%llu\n", p, n, n-p); + + /* this is the end of what we can dump from outside the current thread */ + + if (thr != tid) + return; + + chunk_appendf(buf, " curr_task="); + ha_task_dump(buf, th_ctx->current, " "); + + if (stuck) { + /* We only emit the backtrace for stuck threads in order not to + * waste precious output buffer space with non-interesting data. + * Please leave this as the last instruction in this function + * so that the compiler uses tail merging and the current + * function does not appear in the stack. + */ + ha_dump_backtrace(buf, " ", 0); + } +} + + +/* dumps into the buffer some information related to task <task> (which may + * either be a task or a tasklet, and prepend each line except the first one + * with <pfx>. The buffer is only appended and the first output starts by the + * pointer itself. The caller is responsible for making sure the task is not + * going to vanish during the dump. + */ +void ha_task_dump(struct buffer *buf, const struct task *task, const char *pfx) +{ + const struct stream *s = NULL; + const struct appctx __maybe_unused *appctx = NULL; + struct hlua __maybe_unused *hlua = NULL; + const struct stconn *sc; + + if (!task) { + chunk_appendf(buf, "0\n"); + return; + } + + if (TASK_IS_TASKLET(task)) + chunk_appendf(buf, + "%p (tasklet) calls=%u\n", + task, + task->calls); + else + chunk_appendf(buf, + "%p (task) calls=%u last=%llu%s\n", + task, + task->calls, + task->wake_date ? (unsigned long long)(now_mono_time() - task->wake_date) : 0, + task->wake_date ? " ns ago" : ""); + + chunk_appendf(buf, "%s fct=%p(", pfx, task->process); + resolve_sym_name(buf, NULL, task->process); + chunk_appendf(buf,") ctx=%p", task->context); + + if (task->process == task_run_applet && (appctx = task->context)) + chunk_appendf(buf, "(%s)\n", appctx->applet->name); + else + chunk_appendf(buf, "\n"); + + if (task->process == process_stream && task->context) + s = (struct stream *)task->context; + else if (task->process == task_run_applet && task->context && (sc = appctx_sc((struct appctx *)task->context))) + s = sc_strm(sc); + else if (task->process == sc_conn_io_cb && task->context) + s = sc_strm(((struct stconn *)task->context)); + + if (s) + stream_dump(buf, s, pfx, '\n'); + +#ifdef USE_LUA + hlua = NULL; + if (s && (hlua = s->hlua)) { + chunk_appendf(buf, "%sCurrent executing Lua from a stream analyser -- ", pfx); + } + else if (task->process == hlua_process_task && (hlua = task->context)) { + chunk_appendf(buf, "%sCurrent executing a Lua task -- ", pfx); + } + else if (task->process == task_run_applet && (appctx = task->context) && + (appctx->applet->fct == hlua_applet_tcp_fct)) { + chunk_appendf(buf, "%sCurrent executing a Lua TCP service -- ", pfx); + } + else if (task->process == task_run_applet && (appctx = task->context) && + (appctx->applet->fct == hlua_applet_http_fct)) { + chunk_appendf(buf, "%sCurrent executing a Lua HTTP service -- ", pfx); + } + + if (hlua && hlua->T) { + chunk_appendf(buf, "stack traceback:\n "); + append_prefixed_str(buf, hlua_traceback(hlua->T, "\n "), pfx, '\n', 0); + b_putchr(buf, '\n'); + } + else + b_putchr(buf, '\n'); +#endif +} + +/* This function dumps all profiling settings. It returns 0 if the output + * buffer is full and it needs to be called again, otherwise non-zero. + */ +static int cli_io_handler_show_threads(struct appctx *appctx) +{ + struct stconn *sc = appctx_sc(appctx); + int thr; + + if (unlikely(sc_ic(sc)->flags & (CF_WRITE_ERROR|CF_SHUTW))) + return 1; + + if (appctx->st0) + thr = appctx->st1; + else + thr = 0; + + chunk_reset(&trash); + ha_thread_dump_all_to_trash(); + + if (applet_putchk(appctx, &trash) == -1) { + /* failed, try again */ + appctx->st1 = thr; + return 0; + } + return 1; +} + +#if defined(HA_HAVE_DUMP_LIBS) +/* parse a "show libs" command. It returns 1 if it emits anything otherwise zero. */ +static int debug_parse_cli_show_libs(char **args, char *payload, struct appctx *appctx, void *private) +{ + if (!cli_has_level(appctx, ACCESS_LVL_OPER)) + return 1; + + chunk_reset(&trash); + if (dump_libs(&trash, 1)) + return cli_msg(appctx, LOG_INFO, trash.area); + else + return 0; +} +#endif + +/* dumps a state of all threads into the trash and on fd #2, then aborts. */ +void ha_panic() +{ + if (HA_ATOMIC_FETCH_ADD(&panic_started, 1) != 0) { + /* a panic dump is already in progress, let's not disturb it, + * we'll be called via signal DEBUGSIG. By returning we may be + * able to leave a current signal handler (e.g. WDT) so that + * this will ensure more reliable signal delivery. + */ + return; + } + chunk_reset(&trash); + chunk_appendf(&trash, "Thread %u is about to kill the process.\n", tid + 1); + ha_thread_dump_all_to_trash(); + DISGUISE(write(2, trash.area, trash.data)); + for (;;) + abort(); +} + +/* Complain with message <msg> on stderr. If <counter> is not NULL, it is + * atomically incremented, and the message is only printed when the counter + * was zero, so that the message is only printed once. <taint> is only checked + * on bit 1, and will taint the process either for a bug (2) or warn (0). + */ +void complain(int *counter, const char *msg, int taint) +{ + if (counter && _HA_ATOMIC_FETCH_ADD(counter, 1)) + return; + DISGUISE(write(2, msg, strlen(msg))); + if (taint & 2) + mark_tainted(TAINTED_BUG); + else + mark_tainted(TAINTED_WARN); +} + +/* parse a "debug dev exit" command. It always returns 1, though it should never return. */ +static int debug_parse_cli_exit(char **args, char *payload, struct appctx *appctx, void *private) +{ + int code = atoi(args[3]); + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + exit(code); + return 1; +} + +/* parse a "debug dev bug" command. It always returns 1, though it should never return. + * Note: we make sure not to make the function static so that it appears in the trace. + */ +int debug_parse_cli_bug(char **args, char *payload, struct appctx *appctx, void *private) +{ + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + BUG_ON(one > zero); + return 1; +} + +/* parse a "debug dev warn" command. It always returns 1. + * Note: we make sure not to make the function static so that it appears in the trace. + */ +int debug_parse_cli_warn(char **args, char *payload, struct appctx *appctx, void *private) +{ + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + WARN_ON(one > zero); + return 1; +} + +/* parse a "debug dev check" command. It always returns 1. + * Note: we make sure not to make the function static so that it appears in the trace. + */ +int debug_parse_cli_check(char **args, char *payload, struct appctx *appctx, void *private) +{ + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + CHECK_IF(one > zero); + return 1; +} + +/* parse a "debug dev close" command. It always returns 1. */ +static int debug_parse_cli_close(char **args, char *payload, struct appctx *appctx, void *private) +{ + int fd; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + if (!*args[3]) + return cli_err(appctx, "Missing file descriptor number.\n"); + + fd = atoi(args[3]); + if (fd < 0 || fd >= global.maxsock) + return cli_err(appctx, "File descriptor out of range.\n"); + + if (!fdtab[fd].owner) + return cli_msg(appctx, LOG_INFO, "File descriptor was already closed.\n"); + + _HA_ATOMIC_INC(&debug_commands_issued); + fd_delete(fd); + return 1; +} + +/* parse a "debug dev delay" command. It always returns 1. */ +static int debug_parse_cli_delay(char **args, char *payload, struct appctx *appctx, void *private) +{ + int delay = atoi(args[3]); + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + usleep((long)delay * 1000); + return 1; +} + +/* parse a "debug dev log" command. It always returns 1. */ +static int debug_parse_cli_log(char **args, char *payload, struct appctx *appctx, void *private) +{ + int arg; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + chunk_reset(&trash); + for (arg = 3; *args[arg]; arg++) { + if (arg > 3) + chunk_strcat(&trash, " "); + chunk_strcat(&trash, args[arg]); + } + + send_log(NULL, LOG_INFO, "%s\n", trash.area); + return 1; +} + +/* parse a "debug dev loop" command. It always returns 1. */ +static int debug_parse_cli_loop(char **args, char *payload, struct appctx *appctx, void *private) +{ + struct timeval deadline, curr; + int loop = atoi(args[3]); + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + gettimeofday(&curr, NULL); + tv_ms_add(&deadline, &curr, loop); + + while (tv_ms_cmp(&curr, &deadline) < 0) + gettimeofday(&curr, NULL); + + return 1; +} + +/* parse a "debug dev panic" command. It always returns 1, though it should never return. */ +static int debug_parse_cli_panic(char **args, char *payload, struct appctx *appctx, void *private) +{ + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + ha_panic(); + return 1; +} + +/* parse a "debug dev exec" command. It always returns 1. */ +#if defined(DEBUG_DEV) +static int debug_parse_cli_exec(char **args, char *payload, struct appctx *appctx, void *private) +{ + int pipefd[2]; + int arg; + int pid; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + _HA_ATOMIC_INC(&debug_commands_issued); + chunk_reset(&trash); + for (arg = 3; *args[arg]; arg++) { + if (arg > 3) + chunk_strcat(&trash, " "); + chunk_strcat(&trash, args[arg]); + } + + thread_isolate(); + if (pipe(pipefd) < 0) + goto fail_pipe; + + if (fd_set_cloexec(pipefd[0]) == -1) + goto fail_fcntl; + + if (fd_set_cloexec(pipefd[1]) == -1) + goto fail_fcntl; + + pid = fork(); + + if (pid < 0) + goto fail_fork; + else if (pid == 0) { + /* child */ + char *cmd[4] = { "/bin/sh", "-c", 0, 0 }; + + close(0); + dup2(pipefd[1], 1); + dup2(pipefd[1], 2); + + cmd[2] = trash.area; + execvp(cmd[0], cmd); + printf("execvp() failed\n"); + exit(1); + } + + /* parent */ + thread_release(); + close(pipefd[1]); + chunk_reset(&trash); + while (1) { + size_t ret = read(pipefd[0], trash.area + trash.data, trash.size - 20 - trash.data); + if (ret <= 0) + break; + trash.data += ret; + if (trash.data + 20 == trash.size) { + chunk_strcat(&trash, "\n[[[TRUNCATED]]]\n"); + break; + } + } + close(pipefd[0]); + waitpid(pid, NULL, WNOHANG); + trash.area[trash.data] = 0; + return cli_msg(appctx, LOG_INFO, trash.area); + + fail_fork: + fail_fcntl: + close(pipefd[0]); + close(pipefd[1]); + fail_pipe: + thread_release(); + return cli_err(appctx, "Failed to execute command.\n"); +} +#endif + +/* parse a "debug dev hex" command. It always returns 1. */ +static int debug_parse_cli_hex(char **args, char *payload, struct appctx *appctx, void *private) +{ + unsigned long start, len; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + if (!*args[3]) + return cli_err(appctx, "Missing memory address to dump from.\n"); + + start = strtoul(args[3], NULL, 0); + if (!start) + return cli_err(appctx, "Will not dump from NULL address.\n"); + + _HA_ATOMIC_INC(&debug_commands_issued); + + /* by default, dump ~128 till next block of 16 */ + len = strtoul(args[4], NULL, 0); + if (!len) + len = ((start + 128) & -16) - start; + + chunk_reset(&trash); + dump_hex(&trash, " ", (const void *)start, len, 1); + trash.area[trash.data] = 0; + return cli_msg(appctx, LOG_INFO, trash.area); +} + +/* parse a "debug dev sym <addr>" command. It always returns 1. */ +static int debug_parse_cli_sym(char **args, char *payload, struct appctx *appctx, void *private) +{ + unsigned long addr; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + if (!*args[3]) + return cli_err(appctx, "Missing memory address to be resolved.\n"); + + _HA_ATOMIC_INC(&debug_commands_issued); + + addr = strtoul(args[3], NULL, 0); + chunk_printf(&trash, "%#lx resolves to ", addr); + resolve_sym_name(&trash, NULL, (const void *)addr); + chunk_appendf(&trash, "\n"); + + return cli_msg(appctx, LOG_INFO, trash.area); +} + +/* parse a "debug dev tkill" command. It always returns 1. */ +static int debug_parse_cli_tkill(char **args, char *payload, struct appctx *appctx, void *private) +{ + int thr = 0; + int sig = SIGABRT; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + if (*args[3]) + thr = atoi(args[3]); + + if (thr < 0 || thr > global.nbthread) + return cli_err(appctx, "Thread number out of range (use 0 for current).\n"); + + if (*args[4]) + sig = atoi(args[4]); + + _HA_ATOMIC_INC(&debug_commands_issued); + if (thr) + ha_tkill(thr - 1, sig); + else + raise(sig); + return 1; +} + +/* parse a "debug dev write" command. It always returns 1. */ +static int debug_parse_cli_write(char **args, char *payload, struct appctx *appctx, void *private) +{ + unsigned long len; + + if (!*args[3]) + return cli_err(appctx, "Missing output size.\n"); + + len = strtoul(args[3], NULL, 0); + if (len >= trash.size) + return cli_err(appctx, "Output too large, must be <tune.bufsize.\n"); + + _HA_ATOMIC_INC(&debug_commands_issued); + + chunk_reset(&trash); + trash.data = len; + memset(trash.area, '.', trash.data); + trash.area[trash.data] = 0; + for (len = 64; len < trash.data; len += 64) + trash.area[len] = '\n'; + return cli_msg(appctx, LOG_INFO, trash.area); +} + +/* parse a "debug dev stream" command */ +/* + * debug dev stream [strm=<ptr>] [strm.f[{+-=}<flags>]] [txn.f[{+-=}<flags>]] \ + * [req.f[{+-=}<flags>]] [res.f[{+-=}<flags>]] \ + * [sif.f[{+-=<flags>]] [sib.f[{+-=<flags>]] \ + * [sif.s[=<state>]] [sib.s[=<state>]] + */ +static int debug_parse_cli_stream(char **args, char *payload, struct appctx *appctx, void *private) +{ + struct stream *s = appctx_strm(appctx); + int arg; + void *ptr; + int size; + const char *word, *end; + struct ist name; + char *msg = NULL; + char *endarg; + unsigned long long old, new; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + ptr = NULL; size = 0; + + if (!*args[3]) { + return cli_err(appctx, + "Usage: debug dev stream { <obj> <op> <value> | wake }*\n" + " <obj> = {strm | strm.f | strm.x | scf.s | scb.s |\n" + " txn.f | req.f | req.r | req.w | res.f | res.r | res.w}\n" + " <op> = {'' (show) | '=' (assign) | '^' (xor) | '+' (or) | '-' (andnot)}\n" + " <value> = 'now' | 64-bit dec/hex integer (0x prefix supported)\n" + " 'wake' wakes the stream asssigned to 'strm' (default: current)\n" + ); + } + + _HA_ATOMIC_INC(&debug_commands_issued); + for (arg = 3; *args[arg]; arg++) { + old = 0; + end = word = args[arg]; + while (*end && *end != '=' && *end != '^' && *end != '+' && *end != '-') + end++; + name = ist2(word, end - word); + if (isteq(name, ist("strm"))) { + ptr = (!s || !may_access(s)) ? NULL : &s; size = sizeof(s); + } else if (isteq(name, ist("strm.f"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->flags; size = sizeof(s->flags); + } else if (isteq(name, ist("strm.x"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->conn_exp; size = sizeof(s->conn_exp); + } else if (isteq(name, ist("txn.f"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->txn->flags; size = sizeof(s->txn->flags); + } else if (isteq(name, ist("req.f"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->req.flags; size = sizeof(s->req.flags); + } else if (isteq(name, ist("res.f"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->res.flags; size = sizeof(s->res.flags); + } else if (isteq(name, ist("req.r"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->req.rex; size = sizeof(s->req.rex); + } else if (isteq(name, ist("res.r"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->res.rex; size = sizeof(s->res.rex); + } else if (isteq(name, ist("req.w"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->req.wex; size = sizeof(s->req.wex); + } else if (isteq(name, ist("res.w"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->res.wex; size = sizeof(s->res.wex); + } else if (isteq(name, ist("scf.s"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->scf->state; size = sizeof(s->scf->state); + } else if (isteq(name, ist("scb.s"))) { + ptr = (!s || !may_access(s)) ? NULL : &s->scf->state; size = sizeof(s->scb->state); + } else if (isteq(name, ist("wake"))) { + if (s && may_access(s) && may_access((void *)s + sizeof(*s) - 1)) + task_wakeup(s->task, TASK_WOKEN_TIMER|TASK_WOKEN_IO|TASK_WOKEN_MSG); + continue; + } else + return cli_dynerr(appctx, memprintf(&msg, "Unsupported field name: '%s'.\n", word)); + + /* read previous value */ + if ((s || ptr == &s) && ptr && may_access(ptr) && may_access(ptr + size - 1)) { + if (size == 8) + old = read_u64(ptr); + else if (size == 4) + old = read_u32(ptr); + else if (size == 2) + old = read_u16(ptr); + else + old = *(const uint8_t *)ptr; + } else { + memprintf(&msg, + "%sSkipping inaccessible pointer %p for field '%.*s'.\n", + msg ? msg : "", ptr, (int)(end - word), word); + continue; + } + + /* parse the new value . */ + new = strtoll(end + 1, &endarg, 0); + if (end[1] && *endarg) { + if (strcmp(end + 1, "now") == 0) + new = now_ms; + else { + memprintf(&msg, + "%sIgnoring unparsable value '%s' for field '%.*s'.\n", + msg ? msg : "", end + 1, (int)(end - word), word); + continue; + } + } + + switch (*end) { + case '\0': /* show */ + memprintf(&msg, "%s%.*s=%#llx ", msg ? msg : "", (int)(end - word), word, old); + new = old; // do not change the value + break; + + case '=': /* set */ + break; + + case '^': /* XOR */ + new = old ^ new; + break; + + case '+': /* OR */ + new = old | new; + break; + + case '-': /* AND NOT */ + new = old & ~new; + break; + + default: + break; + } + + /* write the new value */ + if (new != old) { + if (size == 8) + write_u64(ptr, new); + else if (size == 4) + write_u32(ptr, new); + else if (size == 2) + write_u16(ptr, new); + else + *(uint8_t *)ptr = new; + } + } + + if (msg && *msg) + return cli_dynmsg(appctx, LOG_INFO, msg); + return 1; +} + +static struct task *debug_task_handler(struct task *t, void *ctx, unsigned int state) +{ + unsigned long *tctx = ctx; // [0] = #tasks, [1] = inter, [2+] = { tl | (tsk+1) } + unsigned long inter = tctx[1]; + unsigned long rnd; + + t->expire = tick_add(now_ms, inter); + + /* half of the calls will wake up another entry */ + rnd = statistical_prng(); + if (rnd & 1) { + rnd >>= 1; + rnd %= tctx[0]; + rnd = tctx[rnd + 2]; + + if (rnd & 1) + task_wakeup((struct task *)(rnd - 1), TASK_WOKEN_MSG); + else + tasklet_wakeup((struct tasklet *)rnd); + } + return t; +} + +static struct task *debug_tasklet_handler(struct task *t, void *ctx, unsigned int state) +{ + unsigned long *tctx = ctx; // [0] = #tasks, [1] = inter, [2+] = { tl | (tsk+1) } + unsigned long rnd; + int i; + + /* wake up two random entries */ + for (i = 0; i < 2; i++) { + rnd = statistical_prng() % tctx[0]; + rnd = tctx[rnd + 2]; + + if (rnd & 1) + task_wakeup((struct task *)(rnd - 1), TASK_WOKEN_MSG); + else + tasklet_wakeup((struct tasklet *)rnd); + } + return t; +} + +/* parse a "debug dev sched" command + * debug dev sched {task|tasklet} [count=<count>] [mask=<mask>] [single=<single>] [inter=<inter>] + */ +static int debug_parse_cli_sched(char **args, char *payload, struct appctx *appctx, void *private) +{ + int arg; + void *ptr; + int size; + const char *word, *end; + struct ist name; + char *msg = NULL; + char *endarg; + unsigned long long new; + unsigned long count = 0; + unsigned long thrid = 0; + unsigned int inter = 0; + unsigned long mask, tmask; + unsigned long i; + int mode = 0; // 0 = tasklet; 1 = task + int single = 0; + unsigned long *tctx; // [0] = #tasks, [1] = inter, [2+] = { tl | (tsk+1) } + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + ptr = NULL; size = 0; + mask = all_threads_mask; + + if (strcmp(args[3], "task") != 0 && strcmp(args[3], "tasklet") != 0) { + return cli_err(appctx, + "Usage: debug dev sched {task|tasklet} { <obj> = <value> }*\n" + " <obj> = {count | mask | inter | single }\n" + " <value> = 64-bit dec/hex integer (0x prefix supported)\n" + ); + } + + mode = strcmp(args[3], "task") == 0; + + _HA_ATOMIC_INC(&debug_commands_issued); + for (arg = 4; *args[arg]; arg++) { + end = word = args[arg]; + while (*end && *end != '=' && *end != '^' && *end != '+' && *end != '-') + end++; + name = ist2(word, end - word); + if (isteq(name, ist("count"))) { + ptr = &count; size = sizeof(count); + } else if (isteq(name, ist("mask"))) { + ptr = &mask; size = sizeof(mask); + } else if (isteq(name, ist("tid"))) { + ptr = &thrid; size = sizeof(thrid); + } else if (isteq(name, ist("inter"))) { + ptr = &inter; size = sizeof(inter); + } else if (isteq(name, ist("single"))) { + ptr = &single; size = sizeof(single); + } else + return cli_dynerr(appctx, memprintf(&msg, "Unsupported setting: '%s'.\n", word)); + + /* parse the new value . */ + new = strtoll(end + 1, &endarg, 0); + if (end[1] && *endarg) { + memprintf(&msg, + "%sIgnoring unparsable value '%s' for field '%.*s'.\n", + msg ? msg : "", end + 1, (int)(end - word), word); + continue; + } + + /* write the new value */ + if (size == 8) + write_u64(ptr, new); + else if (size == 4) + write_u32(ptr, new); + else if (size == 2) + write_u16(ptr, new); + else + *(uint8_t *)ptr = new; + } + + tctx = calloc(sizeof(*tctx), count + 2); + if (!tctx) + goto fail; + + tctx[0] = (unsigned long)count; + tctx[1] = (unsigned long)inter; + + mask &= all_threads_mask; + if (!mask) + mask = tid_bit; + + tmask = 0; + for (i = 0; i < count; i++) { + if (single || mode == 0) { + /* look for next bit matching a bit in mask or loop back to zero */ + for (tmask <<= 1; !(mask & tmask); ) { + if (!(mask & -tmask)) + tmask = 1; + else + tmask <<= 1; + } + } else { + /* multi-threaded task */ + tmask = mask; + } + + /* now, if poly or mask was set, tmask corresponds to the + * valid thread mask to use, otherwise it remains zero. + */ + //printf("%lu: mode=%d mask=%#lx\n", i, mode, tmask); + if (mode == 0) { + struct tasklet *tl = tasklet_new(); + + if (!tl) + goto fail; + + if (tmask) + tl->tid = my_ffsl(tmask) - 1; + tl->process = debug_tasklet_handler; + tl->context = tctx; + tctx[i + 2] = (unsigned long)tl; + } else { + struct task *task = task_new(tmask ? tmask : tid_bit); + + if (!task) + goto fail; + + task->process = debug_task_handler; + task->context = tctx; + tctx[i + 2] = (unsigned long)task + 1; + } + } + + /* start the tasks and tasklets */ + for (i = 0; i < count; i++) { + unsigned long ctx = tctx[i + 2]; + + if (ctx & 1) + task_wakeup((struct task *)(ctx - 1), TASK_WOKEN_INIT); + else + tasklet_wakeup((struct tasklet *)ctx); + } + + if (msg && *msg) + return cli_dynmsg(appctx, LOG_INFO, msg); + return 1; + + fail: + /* free partially allocated entries */ + for (i = 0; tctx && i < count; i++) { + unsigned long ctx = tctx[i + 2]; + + if (!ctx) + break; + + if (ctx & 1) + task_destroy((struct task *)(ctx - 1)); + else + tasklet_free((struct tasklet *)ctx); + } + + free(tctx); + return cli_err(appctx, "Not enough memory"); +} + +/* CLI state for "debug dev fd" */ +struct dev_fd_ctx { + int start_fd; +}; + +/* CLI parser for the "debug dev fd" command. The current FD to restart from is + * stored in a struct dev_fd_ctx pointed to by svcctx. + */ +static int debug_parse_cli_fd(char **args, char *payload, struct appctx *appctx, void *private) +{ + struct dev_fd_ctx *ctx = applet_reserve_svcctx(appctx, sizeof(*ctx)); + + if (!cli_has_level(appctx, ACCESS_LVL_OPER)) + return 1; + + /* start at fd #0 */ + ctx->start_fd = 0; + return 0; +} + +/* CLI I/O handler for the "debug dev fd" command. Dumps all FDs that are + * accessible from the process but not known from fdtab. The FD number to + * restart from is stored in a struct dev_fd_ctx pointed to by svcctx. + */ +static int debug_iohandler_fd(struct appctx *appctx) +{ + struct dev_fd_ctx *ctx = appctx->svcctx; + struct stconn *sc = appctx_sc(appctx); + struct sockaddr_storage sa; + struct stat statbuf; + socklen_t salen, vlen; + int ret1, ret2, port; + char *addrstr; + int ret = 1; + int i, fd; + + if (unlikely(sc_ic(sc)->flags & (CF_WRITE_ERROR|CF_SHUTW))) + goto end; + + chunk_reset(&trash); + + thread_isolate(); + + /* we have two inner loops here, one for the proxy, the other one for + * the buffer. + */ + for (fd = ctx->start_fd; fd < global.maxsock; fd++) { + /* check for FD's existence */ + ret1 = fcntl(fd, F_GETFD, 0); + if (ret1 == -1) + continue; // not known to the process + if (fdtab[fd].owner) + continue; // well-known + + /* OK we're seeing an orphan let's try to retrieve as much + * information as possible about it. + */ + chunk_printf(&trash, "%5d", fd); + + if (fstat(fd, &statbuf) != -1) { + chunk_appendf(&trash, " type=%s mod=%04o dev=%#llx siz=%#llx uid=%lld gid=%lld fs=%#llx ino=%#llx", + isatty(fd) ? "tty.": + S_ISREG(statbuf.st_mode) ? "file": + S_ISDIR(statbuf.st_mode) ? "dir.": + S_ISCHR(statbuf.st_mode) ? "chr.": + S_ISBLK(statbuf.st_mode) ? "blk.": + S_ISFIFO(statbuf.st_mode) ? "pipe": + S_ISLNK(statbuf.st_mode) ? "link": + S_ISSOCK(statbuf.st_mode) ? "sock": +#ifdef USE_EPOLL + epoll_wait(fd, NULL, 0, 0) != -1 || errno != EBADF ? "epol": +#endif + "????", + (uint)statbuf.st_mode & 07777, + + (ullong)statbuf.st_rdev, + (ullong)statbuf.st_size, + (ullong)statbuf.st_uid, + (ullong)statbuf.st_gid, + + (ullong)statbuf.st_dev, + (ullong)statbuf.st_ino); + } + + chunk_appendf(&trash, " getfd=%s+%#x", + (ret1 & FD_CLOEXEC) ? "cloex" : "", + ret1 &~ FD_CLOEXEC); + + /* FD options */ + ret2 = fcntl(fd, F_GETFL, 0); + if (ret2) { + chunk_appendf(&trash, " getfl=%s", + (ret1 & 3) >= 2 ? "O_RDWR" : + (ret1 & 1) ? "O_WRONLY" : "O_RDONLY"); + + for (i = 2; i < 32; i++) { + if (!(ret2 & (1UL << i))) + continue; + switch (1UL << i) { + case O_CREAT: chunk_appendf(&trash, ",O_CREAT"); break; + case O_EXCL: chunk_appendf(&trash, ",O_EXCL"); break; + case O_NOCTTY: chunk_appendf(&trash, ",O_NOCTTY"); break; + case O_TRUNC: chunk_appendf(&trash, ",O_TRUNC"); break; + case O_APPEND: chunk_appendf(&trash, ",O_APPEND"); break; +#ifdef O_ASYNC + case O_ASYNC: chunk_appendf(&trash, ",O_ASYNC"); break; +#endif +#ifdef O_DIRECT + case O_DIRECT: chunk_appendf(&trash, ",O_DIRECT"); break; +#endif +#ifdef O_NOATIME + case O_NOATIME: chunk_appendf(&trash, ",O_NOATIME"); break; +#endif + } + } + } + + vlen = sizeof(ret2); + ret1 = getsockopt(fd, SOL_SOCKET, SO_TYPE, &ret2, &vlen); + if (ret1 != -1) + chunk_appendf(&trash, " so_type=%d", ret2); + + vlen = sizeof(ret2); + ret1 = getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &ret2, &vlen); + if (ret1 != -1) + chunk_appendf(&trash, " so_accept=%d", ret2); + + vlen = sizeof(ret2); + ret1 = getsockopt(fd, SOL_SOCKET, SO_ERROR, &ret2, &vlen); + if (ret1 != -1) + chunk_appendf(&trash, " so_error=%d", ret2); + + salen = sizeof(sa); + if (getsockname(fd, (struct sockaddr *)&sa, &salen) != -1) { + if (sa.ss_family == AF_INET) + port = ntohs(((const struct sockaddr_in *)&sa)->sin_port); + else if (sa.ss_family == AF_INET6) + port = ntohs(((const struct sockaddr_in6 *)&sa)->sin6_port); + else + port = 0; + addrstr = sa2str(&sa, port, 0); + chunk_appendf(&trash, " laddr=%s", addrstr); + free(addrstr); + } + + salen = sizeof(sa); + if (getpeername(fd, (struct sockaddr *)&sa, &salen) != -1) { + if (sa.ss_family == AF_INET) + port = ntohs(((const struct sockaddr_in *)&sa)->sin_port); + else if (sa.ss_family == AF_INET6) + port = ntohs(((const struct sockaddr_in6 *)&sa)->sin6_port); + else + port = 0; + addrstr = sa2str(&sa, port, 0); + chunk_appendf(&trash, " raddr=%s", addrstr); + free(addrstr); + } + + chunk_appendf(&trash, "\n"); + + if (applet_putchk(appctx, &trash) == -1) { + ctx->start_fd = fd; + ret = 0; + break; + } + } + + thread_release(); + end: + return ret; +} + +#if defined(DEBUG_MEM_STATS) + +/* CLI state for "debug dev memstats" */ +struct dev_mem_ctx { + struct mem_stats *start, *stop; /* begin/end of dump */ + int show_all; /* show all entries if non-null */ +}; + +/* CLI parser for the "debug dev memstats" command. Sets a dev_mem_ctx shown above. */ +static int debug_parse_cli_memstats(char **args, char *payload, struct appctx *appctx, void *private) +{ + struct dev_mem_ctx *ctx = applet_reserve_svcctx(appctx, sizeof(*ctx)); + + extern __attribute__((__weak__)) struct mem_stats __start_mem_stats; + extern __attribute__((__weak__)) struct mem_stats __stop_mem_stats; + + if (!cli_has_level(appctx, ACCESS_LVL_OPER)) + return 1; + + if (strcmp(args[3], "reset") == 0) { + struct mem_stats *ptr; + + if (!cli_has_level(appctx, ACCESS_LVL_ADMIN)) + return 1; + + for (ptr = &__start_mem_stats; ptr < &__stop_mem_stats; ptr++) { + _HA_ATOMIC_STORE(&ptr->calls, 0); + _HA_ATOMIC_STORE(&ptr->size, 0); + } + return 1; + } + + if (strcmp(args[3], "all") == 0) + ctx->show_all = 1; + + /* otherwise proceed with the dump from p0 to p1 */ + ctx->start = &__start_mem_stats; + ctx->stop = &__stop_mem_stats; + return 0; +} + +/* CLI I/O handler for the "debug dev memstats" command using a dev_mem_ctx + * found in appctx->svcctx. Dumps all mem_stats structs referenced by pointers + * located between ->start and ->stop. Dumps all entries if ->show_all != 0, + * otherwise only non-zero calls. + */ +static int debug_iohandler_memstats(struct appctx *appctx) +{ + struct dev_mem_ctx *ctx = appctx->svcctx; + struct stconn *sc = appctx_sc(appctx); + struct mem_stats *ptr = ctx->start; + int ret = 1; + + if (unlikely(sc_ic(sc)->flags & (CF_WRITE_ERROR|CF_SHUTW))) + goto end; + + chunk_reset(&trash); + + /* we have two inner loops here, one for the proxy, the other one for + * the buffer. + */ + for (; ptr != ctx->stop; ptr++) { + const char *type; + const char *name; + const char *p; + + if (!ptr->size && !ptr->calls && !ctx->show_all) + continue; + + /* basename only */ + for (p = name = ptr->file; *p; p++) { + if (*p == '/') + name = p + 1; + } + + switch (ptr->type) { + case MEM_STATS_TYPE_CALLOC: type = "CALLOC"; break; + case MEM_STATS_TYPE_FREE: type = "FREE"; break; + case MEM_STATS_TYPE_MALLOC: type = "MALLOC"; break; + case MEM_STATS_TYPE_REALLOC: type = "REALLOC"; break; + case MEM_STATS_TYPE_STRDUP: type = "STRDUP"; break; + default: type = "UNSET"; break; + } + + //chunk_printf(&trash, + // "%20s:%-5d %7s size: %12lu calls: %9lu size/call: %6lu\n", + // name, ptr->line, type, + // (unsigned long)ptr->size, (unsigned long)ptr->calls, + // (unsigned long)(ptr->calls ? (ptr->size / ptr->calls) : 0)); + + chunk_printf(&trash, "%s:%d", name, ptr->line); + while (trash.data < 25) + trash.area[trash.data++] = ' '; + chunk_appendf(&trash, "%7s size: %12lu calls: %9lu size/call: %6lu\n", + type, + (unsigned long)ptr->size, (unsigned long)ptr->calls, + (unsigned long)(ptr->calls ? (ptr->size / ptr->calls) : 0)); + + if (applet_putchk(appctx, &trash) == -1) { + ctx->start = ptr; + ret = 0; + break; + } + } + + end: + return ret; +} + +#endif + +#ifndef USE_THREAD_DUMP + +/* This function dumps all threads' state to the trash. This version is the + * most basic one, which doesn't inspect other threads. + */ +void ha_thread_dump_all_to_trash() +{ + unsigned int thr; + + for (thr = 0; thr < global.nbthread; thr++) + ha_thread_dump(&trash, thr, tid); +} + +#else /* below USE_THREAD_DUMP is set */ + +/* ID of the thread requesting the dump */ +static unsigned int thread_dump_tid; + +/* points to the buffer where the dump functions should write. It must + * have already been initialized by the requester. Nothing is done if + * it's NULL. + */ +struct buffer *thread_dump_buffer = NULL; + +void ha_thread_dump_all_to_trash() +{ + unsigned long old; + + while (1) { + old = 0; + if (HA_ATOMIC_CAS(&threads_to_dump, &old, all_threads_mask)) + break; + ha_thread_relax(); + } + + thread_dump_buffer = &trash; + thread_dump_tid = tid; + ha_tkillall(DEBUGSIG); +} + +/* handles DEBUGSIG to dump the state of the thread it's working on */ +void debug_handler(int sig, siginfo_t *si, void *arg) +{ + /* first, let's check it's really for us and that we didn't just get + * a spurious DEBUGSIG. + */ + if (!(threads_to_dump & tid_bit)) + return; + + /* There are 4 phases in the dump process: + * 1- wait for our turn, i.e. when all lower bits are gone. + * 2- perform the action if our bit is set + * 3- remove our bit to let the next one go, unless we're + * the last one and have to put them all as a signal + * 4- wait out bit to re-appear, then clear it and quit. + */ + + /* wait for all previous threads to finish first */ + while (threads_to_dump & (tid_bit - 1)) + ha_thread_relax(); + + /* dump if needed */ + if (threads_to_dump & tid_bit) { + if (thread_dump_buffer) + ha_thread_dump(thread_dump_buffer, tid, thread_dump_tid); + if ((threads_to_dump & all_threads_mask) == tid_bit) { + /* last one */ + HA_ATOMIC_STORE(&threads_to_dump, all_threads_mask); + thread_dump_buffer = NULL; + } + else + HA_ATOMIC_AND(&threads_to_dump, ~tid_bit); + } + + /* now wait for all others to finish dumping. The last one will set all + * bits again to broadcast the leaving condition so we'll see ourselves + * present again. This way the threads_to_dump variable never passes to + * zero until all visitors have stopped waiting. + */ + while (!(threads_to_dump & tid_bit)) + ha_thread_relax(); + HA_ATOMIC_AND(&threads_to_dump, ~tid_bit); + + /* mark the current thread as stuck to detect it upon next invocation + * if it didn't move. + */ + if (!((threads_harmless_mask|sleeping_thread_mask) & tid_bit)) + th_ctx->flags |= TH_FL_STUCK; +} + +static int init_debug_per_thread() +{ + sigset_t set; + + /* unblock the DEBUGSIG signal we intend to use */ + sigemptyset(&set); + sigaddset(&set, DEBUGSIG); + ha_sigmask(SIG_UNBLOCK, &set, NULL); + return 1; +} + +static int init_debug() +{ + struct sigaction sa; + void *callers[1]; + + /* calling backtrace() will access libgcc at runtime. We don't want to + * do it after the chroot, so let's perform a first call to have it + * ready in memory for later use. + */ + my_backtrace(callers, sizeof(callers)/sizeof(*callers)); + sa.sa_handler = NULL; + sa.sa_sigaction = debug_handler; + sigemptyset(&sa.sa_mask); + sa.sa_flags = SA_SIGINFO; + sigaction(DEBUGSIG, &sa, NULL); + return ERR_NONE; +} + +REGISTER_POST_CHECK(init_debug); +REGISTER_PER_THREAD_INIT(init_debug_per_thread); + +#endif /* USE_THREAD_DUMP */ + +/* register cli keywords */ +static struct cli_kw_list cli_kws = {{ },{ + {{ "debug", "dev", "bug", NULL }, "debug dev bug : call BUG_ON() and crash", debug_parse_cli_bug, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "check", NULL }, "debug dev check : call CHECK_IF() and possibly crash", debug_parse_cli_check, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "close", NULL }, "debug dev close <fd> : close this file descriptor", debug_parse_cli_close, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "delay", NULL }, "debug dev delay [ms] : sleep this long", debug_parse_cli_delay, NULL, NULL, NULL, ACCESS_EXPERT }, +#if defined(DEBUG_DEV) + {{ "debug", "dev", "exec", NULL }, "debug dev exec [cmd] ... : show this command's output", debug_parse_cli_exec, NULL, NULL, NULL, ACCESS_EXPERT }, +#endif + {{ "debug", "dev", "fd", NULL }, "debug dev fd : scan for rogue/unhandled FDs", debug_parse_cli_fd, debug_iohandler_fd, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "exit", NULL }, "debug dev exit [code] : immediately exit the process", debug_parse_cli_exit, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "hex", NULL }, "debug dev hex <addr> [len] : dump a memory area", debug_parse_cli_hex, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "log", NULL }, "debug dev log [msg] ... : send this msg to global logs", debug_parse_cli_log, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "loop", NULL }, "debug dev loop [ms] : loop this long", debug_parse_cli_loop, NULL, NULL, NULL, ACCESS_EXPERT }, +#if defined(DEBUG_MEM_STATS) + {{ "debug", "dev", "memstats", NULL }, "debug dev memstats [reset|all] : dump/reset memory statistics", debug_parse_cli_memstats, debug_iohandler_memstats, NULL, NULL, ACCESS_EXPERT }, +#endif + {{ "debug", "dev", "panic", NULL }, "debug dev panic : immediately trigger a panic", debug_parse_cli_panic, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "sched", NULL }, "debug dev sched {task|tasklet} [k=v]* : stress the scheduler", debug_parse_cli_sched, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "stream",NULL }, "debug dev stream [k=v]* : show/manipulate stream flags", debug_parse_cli_stream,NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "sym", NULL }, "debug dev sym <addr> : resolve symbol address", debug_parse_cli_sym, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "tkill", NULL }, "debug dev tkill [thr] [sig] : send signal to thread", debug_parse_cli_tkill, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "warn", NULL }, "debug dev warn : call WARN_ON() and possibly crash", debug_parse_cli_warn, NULL, NULL, NULL, ACCESS_EXPERT }, + {{ "debug", "dev", "write", NULL }, "debug dev write [size] : write that many bytes in return", debug_parse_cli_write, NULL, NULL, NULL, ACCESS_EXPERT }, +#if defined(HA_HAVE_DUMP_LIBS) + {{ "show", "libs", NULL, NULL }, "show libs : show loaded object files and libraries", debug_parse_cli_show_libs, NULL, NULL }, +#endif + {{ "show", "threads", NULL, NULL }, "show threads : show some threads debugging information", NULL, cli_io_handler_show_threads, NULL }, + {{},} +}}; + +INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws); |