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-rw-r--r--src/journal/coredump.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/src/journal/coredump.c b/src/journal/coredump.c
deleted file mode 100644
index a507fc65f8..0000000000
--- a/src/journal/coredump.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/prctl.h>
-
-#include <systemd/sd-journal.h>
-
-#ifdef HAVE_LOGIND
-#include <systemd/sd-login.h>
-#endif
-
-#include "log.h"
-#include "util.h"
-#include "mkdir.h"
-#include "special.h"
-#include "cgroup-util.h"
-
-#define COREDUMP_MAX (24*1024*1024)
-
-enum {
- ARG_PID = 1,
- ARG_UID,
- ARG_GID,
- ARG_SIGNAL,
- ARG_TIMESTAMP,
- ARG_COMM,
- _ARG_MAX
-};
-
-static int divert_coredump(void) {
- FILE *f;
- int r;
-
- log_info("Detected coredump of the journal daemon itself, diverting coredump to /var/lib/systemd/coredump/.");
-
- mkdir_p_label("/var/lib/systemd/coredump", 0755);
-
- f = fopen("/var/lib/systemd/coredump/core.systemd-journald", "we");
- if (!f) {
- log_error("Failed to create coredump file: %m");
- return -errno;
- }
-
- for (;;) {
- uint8_t buffer[4096];
- size_t l, q;
-
- l = fread(buffer, 1, sizeof(buffer), stdin);
- if (l <= 0) {
- if (ferror(f)) {
- log_error("Failed to read coredump: %m");
- r = -errno;
- goto finish;
- }
-
- r = 0;
- break;
- }
-
- q = fwrite(buffer, 1, l, f);
- if (q != l) {
- log_error("Failed to write coredump: %m");
- r = -errno;
- goto finish;
- }
- }
-
- fflush(f);
-
- if (ferror(f)) {
- log_error("Failed to write coredump: %m");
- r = -errno;
- }
-
-finish:
- fclose(f);
- return r;
-}
-
-int main(int argc, char* argv[]) {
- int r, j = 0;
- char *p = NULL;
- ssize_t n;
- pid_t pid;
- uid_t uid;
- gid_t gid;
- struct iovec iovec[14];
- char *core_pid = NULL, *core_uid = NULL, *core_gid = NULL, *core_signal = NULL,
- *core_timestamp = NULL, *core_comm = NULL, *core_exe = NULL, *core_unit = NULL,
- *core_session = NULL, *core_message = NULL, *core_cmdline = NULL, *t;
-
- prctl(PR_SET_DUMPABLE, 0);
-
- if (argc != _ARG_MAX) {
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
- log_open();
-
- log_error("Invalid number of arguments passed from kernel.");
- r = -EINVAL;
- goto finish;
- }
-
- r = parse_pid(argv[ARG_PID], &pid);
- if (r < 0) {
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
- log_open();
-
- log_error("Failed to parse PID.");
- goto finish;
- }
-
- if (cg_pid_get_unit(pid, &t) >= 0) {
-
- if (streq(t, SPECIAL_JOURNALD_SERVICE)) {
- /* Make sure we don't make use of the journal,
- * if it's the journal which is crashing */
- log_set_target(LOG_TARGET_KMSG);
- log_open();
-
- r = divert_coredump();
- goto finish;
- }
-
- core_unit = strappend("COREDUMP_UNIT=", t);
- free(t);
-
- if (core_unit)
- IOVEC_SET_STRING(iovec[j++], core_unit);
- }
-
- /* OK, now we know it's not the journal, hence make use of
- * it */
- log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
- log_open();
-
- r = parse_uid(argv[ARG_UID], &uid);
- if (r < 0) {
- log_error("Failed to parse UID.");
- goto finish;
- }
-
- r = parse_gid(argv[ARG_GID], &gid);
- if (r < 0) {
- log_error("Failed to parse GID.");
- goto finish;
- }
-
- core_pid = strappend("COREDUMP_PID=", argv[ARG_PID]);
- if (core_pid)
- IOVEC_SET_STRING(iovec[j++], core_pid);
-
- core_uid = strappend("COREDUMP_UID=", argv[ARG_UID]);
- if (core_uid)
- IOVEC_SET_STRING(iovec[j++], core_uid);
-
- core_gid = strappend("COREDUMP_GID=", argv[ARG_GID]);
- if (core_gid)
- IOVEC_SET_STRING(iovec[j++], core_gid);
-
- core_signal = strappend("COREDUMP_SIGNAL=", argv[ARG_SIGNAL]);
- if (core_signal)
- IOVEC_SET_STRING(iovec[j++], core_signal);
-
- core_comm = strappend("COREDUMP_COMM=", argv[ARG_COMM]);
- if (core_comm)
- IOVEC_SET_STRING(iovec[j++], core_comm);
-
-#ifdef HAVE_LOGIND
- if (sd_pid_get_session(pid, &t) >= 0) {
- core_session = strappend("COREDUMP_SESSION=", t);
- free(t);
-
- if (core_session)
- IOVEC_SET_STRING(iovec[j++], core_session);
- }
-
-#endif
-
- if (get_process_exe(pid, &t) >= 0) {
- core_exe = strappend("COREDUMP_EXE=", t);
- free(t);
-
- if (core_exe)
- IOVEC_SET_STRING(iovec[j++], core_exe);
- }
-
- if (get_process_cmdline(pid, LINE_MAX, false, &t) >= 0) {
- core_cmdline = strappend("COREDUMP_CMDLINE=", t);
- free(t);
-
- if (core_cmdline)
- IOVEC_SET_STRING(iovec[j++], core_cmdline);
- }
-
- core_timestamp = strjoin("COREDUMP_TIMESTAMP=", argv[ARG_TIMESTAMP], "000000", NULL);
- if (core_timestamp)
- IOVEC_SET_STRING(iovec[j++], core_timestamp);
-
- IOVEC_SET_STRING(iovec[j++], "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1");
- IOVEC_SET_STRING(iovec[j++], "PRIORITY=2");
-
- core_message = strjoin("MESSAGE=Process ", argv[ARG_PID], " (", argv[ARG_COMM], ") dumped core.", NULL);
- if (core_message)
- IOVEC_SET_STRING(iovec[j++], core_message);
-
- /* Now, let's drop privileges to become the user who owns the
- * segfaulted process and allocate the coredump memory under
- * his uid. This also ensures that the credentials journald
- * will see are the ones of the coredumping user, thus making
- * sure the user himself gets access to the core dump. */
-
- if (setresgid(gid, gid, gid) < 0 ||
- setresuid(uid, uid, uid) < 0) {
- log_error("Failed to drop privileges: %m");
- r = -errno;
- goto finish;
- }
-
- p = malloc(9 + COREDUMP_MAX);
- if (!p) {
- r = log_oom();
- goto finish;
- }
-
- memcpy(p, "COREDUMP=", 9);
-
- n = loop_read(STDIN_FILENO, p + 9, COREDUMP_MAX, false);
- if (n < 0) {
- log_error("Failed to read core dump data: %s", strerror(-n));
- r = (int) n;
- goto finish;
- }
-
- iovec[j].iov_base = p;
- iovec[j].iov_len = 9 + n;
- j++;
-
- r = sd_journal_sendv(iovec, j);
- if (r < 0)
- log_error("Failed to send coredump: %s", strerror(-r));
-
-finish:
- free(p);
- free(core_pid);
- free(core_uid);
- free(core_gid);
- free(core_signal);
- free(core_timestamp);
- free(core_comm);
- free(core_exe);
- free(core_cmdline);
- free(core_unit);
- free(core_session);
- free(core_message);
-
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
-}
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