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@ -119,6 +119,15 @@
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--debugger=</option><replaceable>DEBUGGER</replaceable></term>
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<listitem><para>Use the given debugger for the <command>debug</command>
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command. If not given and <varname>$SYSTEMD_DEBUGGER</varname> is unset, then
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<citerefentry><refentrytitle>gdb</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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will be used. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-D</option> <replaceable>DIR</replaceable></term>
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<term><option>--directory=</option><replaceable>DIR</replaceable></term>
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@ -228,10 +237,14 @@
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</varlistentry>
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<varlistentry>
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<term><command>gdb</command></term>
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<term><command>debug</command></term>
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<listitem><para>Invoke the GNU debugger on the last core dump
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matching specified characteristics. </para></listitem>
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<listitem><para>Invoke a debugger on the last core dump
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matching specified characteristics. By default,
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<citerefentry><refentrytitle>gdb</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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will be used. This may be changed using the <option>--debugger=</option>
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option or the <varname>$SYSTEMD_DEBUGGER</varname> environment
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variable.</para></listitem>
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</varlistentry>
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</variablelist>
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@ -298,7 +311,7 @@
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<example>
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<title>Invoke gdb on the last core dump</title>
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<programlisting># coredumpctl gdb</programlisting>
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<programlisting># coredumpctl debug</programlisting>
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</example>
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<example>
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@ -44,6 +44,7 @@
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static usec_t arg_since = USEC_INFINITY, arg_until = USEC_INFINITY;
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static const char* arg_field = NULL;
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static const char *arg_debugger = NULL;
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static const char *arg_directory = NULL;
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static bool arg_no_pager = false;
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static int arg_no_legend = false;
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@ -142,23 +143,24 @@ static int help(void) {
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printf("%s [OPTIONS...]\n\n"
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"List or retrieve coredumps from the journal.\n\n"
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"Flags:\n"
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" -h --help Show this help\n"
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" --version Print version string\n"
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" --no-pager Do not pipe output into a pager\n"
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" --no-legend Do not print the column headers.\n"
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" -1 Show information about most recent entry only\n"
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" -S --since=DATE Only print coredumps since the date\n"
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" -U --until=DATE Only print coredumps until the date\n"
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" -r --reverse Show the newest entries first\n"
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" -F --field=FIELD List all values a certain field takes\n"
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" -o --output=FILE Write output to FILE\n"
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" -D --directory=DIR Use journal files from directory\n\n"
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" -q --quiet Do not show info messages and privilege warning\n"
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" -h --help Show this help\n"
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" --version Print version string\n"
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" --no-pager Do not pipe output into a pager\n"
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" --no-legend Do not print the column headers\n"
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" --debugger=DEBUGGER Use the given debugger\n"
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" -1 Show information about most recent entry only\n"
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" -S --since=DATE Only print coredumps since the date\n"
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" -U --until=DATE Only print coredumps until the date\n"
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" -r --reverse Show the newest entries first\n"
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" -F --field=FIELD List all values a certain field takes\n"
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" -o --output=FILE Write output to FILE\n"
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" -D --directory=DIR Use journal files from directory\n\n"
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" -q --quiet Do not show info messages and privilege warning\n"
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"Commands:\n"
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" list [MATCHES...] List available coredumps (default)\n"
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" info [MATCHES...] Show detailed information about one or more coredumps\n"
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" dump [MATCHES...] Print first matching coredump to stdout\n"
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" gdb [MATCHES...] Start gdb for the first matching coredump\n"
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" debug [MATCHES...] Start a debugger for the first matching coredump\n"
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, program_invocation_short_name);
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return 0;
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@ -169,6 +171,7 @@ static int parse_argv(int argc, char *argv[]) {
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ARG_VERSION = 0x100,
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ARG_NO_PAGER,
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ARG_NO_LEGEND,
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ARG_DEBUGGER,
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};
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int c, r;
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@ -178,6 +181,7 @@ static int parse_argv(int argc, char *argv[]) {
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{ "version" , no_argument, NULL, ARG_VERSION },
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{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
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{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
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{ "debugger", required_argument, NULL, ARG_DEBUGGER },
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{ "output", required_argument, NULL, 'o' },
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{ "field", required_argument, NULL, 'F' },
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{ "directory", required_argument, NULL, 'D' },
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@ -207,6 +211,10 @@ static int parse_argv(int argc, char *argv[]) {
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arg_no_legend = true;
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break;
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case ARG_DEBUGGER:
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arg_debugger = optarg;
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break;
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case 'o':
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if (arg_output) {
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log_error("cannot set output more than once");
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@ -883,15 +891,25 @@ static int dump_core(int argc, char **argv, void *userdata) {
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return 0;
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}
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static int run_gdb(int argc, char **argv, void *userdata) {
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static int run_debug(int argc, char **argv, void *userdata) {
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_cleanup_(sd_journal_closep) sd_journal *j = NULL;
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_cleanup_free_ char *exe = NULL, *path = NULL;
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bool unlink_path = false;
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const char *data;
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const char *data, *fork_name;
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size_t len;
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pid_t pid;
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int r;
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if (!arg_debugger) {
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char *env_debugger;
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env_debugger = getenv("SYSTEMD_DEBUGGER");
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if (env_debugger)
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arg_debugger = env_debugger;
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else
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arg_debugger = "gdb";
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}
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if (arg_field) {
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log_error("Option --field/-F only makes sense with list");
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return -EINVAL;
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@ -937,17 +955,19 @@ static int run_gdb(int argc, char **argv, void *userdata) {
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/* Don't interfere with gdb and its handling of SIGINT. */
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(void) ignore_signals(SIGINT, -1);
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r = safe_fork("(gdb)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_CLOSE_ALL_FDS|FORK_LOG, &pid);
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fork_name = strjoina("(", arg_debugger, ")");
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r = safe_fork(fork_name, FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_CLOSE_ALL_FDS|FORK_LOG, &pid);
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if (r < 0)
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goto finish;
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if (r == 0) {
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execlp("gdb", "gdb", exe, path, NULL);
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execlp(arg_debugger, arg_debugger, exe, "-c", path, NULL);
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log_open();
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log_error_errno(errno, "Failed to invoke gdb: %m");
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log_error_errno(errno, "Failed to invoke %s: %m", arg_debugger);
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_exit(EXIT_FAILURE);
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}
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r = wait_for_terminate_and_check("gdb", pid, WAIT_LOG_ABNORMAL);
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r = wait_for_terminate_and_check(arg_debugger, pid, WAIT_LOG_ABNORMAL);
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finish:
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(void) default_signals(SIGINT, -1);
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@ -1023,10 +1043,11 @@ static int check_units_active(void) {
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static int coredumpctl_main(int argc, char *argv[]) {
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static const Verb verbs[] = {
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{ "list", VERB_ANY, VERB_ANY, VERB_DEFAULT, dump_list },
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{ "info", VERB_ANY, VERB_ANY, 0, dump_list },
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{ "dump", VERB_ANY, VERB_ANY, 0, dump_core },
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{ "gdb", VERB_ANY, VERB_ANY, 0, run_gdb },
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{ "list", VERB_ANY, VERB_ANY, VERB_DEFAULT, dump_list },
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{ "info", VERB_ANY, VERB_ANY, 0, dump_list },
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{ "dump", VERB_ANY, VERB_ANY, 0, dump_core },
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{ "debug", VERB_ANY, VERB_ANY, 0, run_debug },
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{ "gdb", VERB_ANY, VERB_ANY, 0, run_debug },
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{}
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};
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