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authorLennart Poettering <lennart@poettering.net>2011-10-07 21:06:39 +0200
committerLennart Poettering <lennart@poettering.net>2011-10-07 22:02:05 +0200
commit87d2c1ff6a7375f03476767e6f59454bcc5cd04b (patch)
tree26824a2485942702b3472cc73191c01e78c622d1 /src/journal/journalctl.c
parent9a36607584bbd1d78775353e022a51794b4e27b1 (diff)
journal: add preliminary incomplete implementation
Diffstat (limited to 'src/journal/journalctl.c')
-rw-r--r--src/journal/journalctl.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
new file mode 100644
index 0000000000..838e8436e4
--- /dev/null
+++ b/src/journal/journalctl.c
@@ -0,0 +1,91 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd 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.
+
+ systemd 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 for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <fcntl.h>
+#include <errno.h>
+#include <stddef.h>
+
+#include "journal-private.h"
+
+int main(int argc, char *argv[]) {
+ int r;
+ JournalFile *f;
+ Object *o = NULL;
+
+ log_parse_environment();
+ log_open();
+
+ r = journal_file_open(NULL, "/var/log/journal/system.journal", O_RDONLY, 0644, &f);
+ if (r == -ENOENT)
+ r = journal_file_open(NULL, "/run/log/journal/system.journal", O_RDONLY, 0644, &f);
+
+ if (r < 0) {
+ log_error("Failed to open journal: %s", strerror(-r));
+ return EXIT_FAILURE;
+ }
+
+ for (;;) {
+ uint64_t offset;
+ uint64_t n, i;
+
+ r = journal_file_next_entry(f, o, &o, &offset);
+ if (r < 0) {
+ log_error("Failed to read journal: %s", strerror(-r));
+ goto finish;
+ }
+
+ if (r == 0)
+ break;
+
+ printf("entry: %llu\n", (unsigned long long) le64toh(o->entry.seqnum));
+
+ n = journal_file_entry_n_items(o);
+ for (i = 0; i < n; i++) {
+ uint64_t p, l;
+
+ p = le64toh(o->entry.items[i].object_offset);
+ r = journal_file_move_to_object(f, p, &o);
+ if (r < 0) {
+ log_error("Failed to move to data: %s", strerror(-r));
+ goto finish;
+ }
+
+ if (le64toh(o->object.type) != OBJECT_DATA) {
+ log_error("Invalid file");
+ goto finish;
+ }
+
+ l = o->object.size - offsetof(Object, data.payload);
+ printf("\t[%.*s]\n", (int) l, o->data.payload);
+
+ r = journal_file_move_to_object(f, offset, &o);
+ if (r < 0) {
+ log_error("Failed to move back to entry: %s", strerror(-r));
+ goto finish;
+ }
+ }
+ }
+
+finish:
+ journal_file_close(f);
+
+ return 0;
+}