diff options
| -rw-r--r-- | man/systemd-coredumpctl.xml | 10 | ||||
| -rw-r--r-- | src/journal/coredumpctl.c | 53 |
2 files changed, 53 insertions, 10 deletions
diff --git a/man/systemd-coredumpctl.xml b/man/systemd-coredumpctl.xml index b80aac86c..4a6e83a75 100644 --- a/man/systemd-coredumpctl.xml +++ b/man/systemd-coredumpctl.xml @@ -83,6 +83,16 @@ </varlistentry> <varlistentry> + <term><option>--field=</option></term> + <term><option>-F</option></term> + + <listitem><para>Print all possible + data values the specified field + takes in matching coredump entries of the + journal.</para></listitem> + </varlistentry> + + <varlistentry> <term><option>--output=FILE</option></term> <term><option>-o FILE</option></term> diff --git a/src/journal/coredumpctl.c b/src/journal/coredumpctl.c index e1b5a1997..60bba7f0e 100644 --- a/src/journal/coredumpctl.c +++ b/src/journal/coredumpctl.c @@ -43,6 +43,7 @@ static enum { static Set *matches = NULL; static FILE* output = NULL; +static char* field = NULL; static int arg_no_pager = false; static int arg_no_legend = false; @@ -150,13 +151,14 @@ static int parse_argv(int argc, char *argv[]) { { "no-pager", no_argument, NULL, ARG_NO_PAGER }, { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, { "output", required_argument, NULL, 'o' }, + { "field", required_argument, NULL, 'F' }, { NULL, 0, NULL, 0 } }; assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "ho:", options, NULL)) >= 0) + while ((c = getopt_long(argc, argv, "ho:F:", options, NULL)) >= 0) switch(c) { case 'h': help(); @@ -192,6 +194,15 @@ static int parse_argv(int argc, char *argv[]) { break; + case 'F': + if (field) { + log_error("cannot use --field/-F more than once"); + return -EINVAL; + } + + field = optarg; + break; + case '?': return -EINVAL; @@ -214,6 +225,11 @@ static int parse_argv(int argc, char *argv[]) { } } + if (field && arg_action != ACTION_LIST) { + log_error("Option --field/-F only makes sense with list"); + return -EINVAL; + } + while (optind < argc) { r = add_match(matches, argv[optind]); if (r != 0) @@ -229,26 +245,39 @@ static int retrieve(const void *data, const char *name, const char **var) { - size_t field; + size_t ident; - field = strlen(name) + 1; /* name + "=" */ + ident = strlen(name) + 1; /* name + "=" */ - if (len < field) + if (len < ident) return 0; - if (memcmp(data, name, field - 1) != 0) + if (memcmp(data, name, ident - 1) != 0) return 0; - if (((const char*) data)[field - 1] != '=') + if (((const char*) data)[ident - 1] != '=') return 0; - *var = strndup((const char*)data + field, len - field); + *var = strndup((const char*)data + ident, len - ident); if (!var) return log_oom(); return 0; } +static void print_field(FILE* file, sd_journal *j) { + const char _cleanup_free_ *value = NULL; + const void *d; + size_t l; + + assert(field); + + SD_JOURNAL_FOREACH_DATA(j, d, l) + retrieve(d, l, field, &value); + if (value) + fprintf(file, "%s\n", value); +} + static int print_entry(FILE* file, sd_journal *j, int had_legend) { const char _cleanup_free_ *pid = NULL, *uid = NULL, *gid = NULL, @@ -310,10 +339,14 @@ static int dump_list(sd_journal *j) { assert(j); - SD_JOURNAL_FOREACH(j) - print_entry(stdout, j, found++); + SD_JOURNAL_FOREACH(j) { + if (field) + print_field(stdout, j); + else + print_entry(stdout, j, found++); + } - if (!found) { + if (!field && !found) { log_notice("No coredumps found"); return -ESRCH; } |