X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fjournal%2Fcoredumpctl.c;h=97d967db3c1b40ee66cea052272237117d23edc1;hp=03f063fe5fcd714c4aa32df756c42d48bf604383;hb=dfb33a9737e62ab872d3937b7690b252d2892fe8;hpb=2fb7a5ce67fd6196416919535fa6a6065e0ea815
diff --git a/src/journal/coredumpctl.c b/src/journal/coredumpctl.c
index 03f063fe5..97d967db3 100644
--- a/src/journal/coredumpctl.c
+++ b/src/journal/coredumpctl.c
@@ -19,6 +19,7 @@
along with systemd; If not, see .
***/
+#include
#include
#include
#include
@@ -33,6 +34,8 @@
#include "log.h"
#include "path-util.h"
#include "pager.h"
+#include "macro.h"
+#include "journal-internal.h"
static enum {
ACTION_NONE,
@@ -41,10 +44,11 @@ static enum {
ACTION_GDB,
} arg_action = ACTION_LIST;
-static Set *matches = NULL;
static FILE* output = NULL;
+static char* field = NULL;
static int arg_no_pager = false;
+static int arg_no_legend = false;
static Set *new_matches(void) {
Set *set;
@@ -85,6 +89,8 @@ static int help(void) {
"Commands:\n"
" -h --help Show this help\n"
" --version Print version string\n"
+ " -F --field=FIELD List all values a certain field takes\n"
+ " gdb Start gdb for the first matching coredump\n"
" list List available coredumps\n"
" dump PID Print coredump to stdout\n"
" dump PATH Print coredump to stdout\n"
@@ -134,10 +140,11 @@ fail:
return r;
}
-static int parse_argv(int argc, char *argv[]) {
+static int parse_argv(int argc, char *argv[], Set *matches) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
+ ARG_NO_LEGEND,
};
int r, c;
@@ -146,14 +153,16 @@ static int parse_argv(int argc, char *argv[]) {
{ "help", no_argument, NULL, 'h' },
{ "version" , no_argument, NULL, ARG_VERSION },
{ "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();
@@ -162,7 +171,6 @@ static int parse_argv(int argc, char *argv[]) {
case ARG_VERSION:
puts(PACKAGE_STRING);
- puts(DISTRIBUTION);
puts(SYSTEMD_FEATURES);
arg_action = ACTION_NONE;
return 0;
@@ -171,6 +179,10 @@ static int parse_argv(int argc, char *argv[]) {
arg_no_pager = true;
break;
+ case ARG_NO_LEGEND:
+ arg_no_legend = true;
+ break;
+
case 'o':
if (output) {
log_error("cannot set output more than once");
@@ -185,6 +197,15 @@ 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;
@@ -207,6 +228,11 @@ 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)
@@ -222,27 +248,40 @@ 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);
- if (!var)
+ *var = strndup((const char*)data + ident, len - ident);
+ if (!*var)
return log_oom();
return 0;
}
-static int print_entry(FILE* file, sd_journal *j, int had_header) {
+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,
*sgnl = NULL, *exe = NULL;
@@ -278,7 +317,7 @@ static int print_entry(FILE* file, sd_journal *j, int had_header) {
format_timestamp(buf, sizeof(buf), t);
- if (!had_header)
+ if (!had_legend && !arg_no_legend)
fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
FORMAT_TIMESTAMP_MAX-1, "TIME",
6, "PID",
@@ -303,10 +342,19 @@ static int dump_list(sd_journal *j) {
assert(j);
- SD_JOURNAL_FOREACH(j)
- print_entry(stdout, j, found++);
+ /* The coredumps are likely to compressed, and for just
+ * listing them we don#t need to decompress them, so let's
+ * pick a fairly low data threshold here */
+ sd_journal_set_data_threshold(j, 4096);
- if (!found) {
+ SD_JOURNAL_FOREACH(j) {
+ if (field)
+ print_field(stdout, j);
+ else
+ print_entry(stdout, j, found++);
+ }
+
+ if (!field && !found) {
log_notice("No coredumps found");
return -ESRCH;
}
@@ -338,6 +386,9 @@ static int dump_core(sd_journal* j) {
assert(j);
+ /* We want full data, nothing truncated. */
+ sd_journal_set_data_threshold(j, 0);
+
r = focus(j);
if (r < 0)
return r;
@@ -385,6 +436,8 @@ static int run_gdb(sd_journal *j) {
assert(j);
+ sd_journal_set_data_threshold(j, 0);
+
r = focus(j);
if (r < 0)
return r;
@@ -467,11 +520,13 @@ finish:
}
int main(int argc, char *argv[]) {
- sd_journal *j = NULL;
+ sd_journal _cleanup_journal_close_ *j = NULL;
const char* match;
Iterator it;
int r = 0;
+ Set _cleanup_set_free_free_ *matches = NULL;
+ setlocale(LC_ALL, "");
log_parse_environment();
log_open();
@@ -481,7 +536,7 @@ int main(int argc, char *argv[]) {
goto end;
}
- r = parse_argv(argc, argv);
+ r = parse_argv(argc, argv, matches);
if (r < 0)
goto end;
@@ -507,7 +562,7 @@ int main(int argc, char *argv[]) {
case ACTION_LIST:
if (!arg_no_pager)
- pager_open();
+ pager_open(false);
r = dump_list(j);
break;
@@ -525,11 +580,6 @@ int main(int argc, char *argv[]) {
}
end:
- if (j)
- sd_journal_close(j);
-
- set_free_free(matches);
-
pager_close();
if (output)