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
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ 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 <sys/signalfd.h>
#include <unistd.h>
#include <fcntl.h>
-#include <sys/acl.h>
-#include <acl/libacl.h>
#include <stddef.h>
#include <sys/ioctl.h>
#include <linux/sockios.h>
+#include <sys/statvfs.h>
+#include <sys/mman.h>
+
+#include <libudev.h>
+#include <systemd/sd-journal.h>
+#include <systemd/sd-messages.h>
+#include <systemd/sd-daemon.h>
+
+#ifdef HAVE_LOGIND
+#include <systemd/sd-login.h>
+#endif
+#include "mkdir.h"
#include "hashmap.h"
#include "journal-file.h"
-#include "sd-daemon.h"
#include "socket-util.h"
-#include "acl-util.h"
#include "cgroup-util.h"
+#include "list.h"
+#include "virt.h"
+#include "missing.h"
+#include "conf-parser.h"
+#include "journal-internal.h"
+#include "journal-vacuum.h"
+#include "journal-authenticate.h"
+#include "journald.h"
+#include "journald-rate-limit.h"
+#include "journald-kmsg.h"
+#include "journald-syslog.h"
+#include "journald-stream.h"
+#include "journald-console.h"
+#include "journald-native.h"
+
+#ifdef HAVE_ACL
+#include <sys/acl.h>
+#include <acl/libacl.h>
+#include "acl-util.h"
+#endif
+
+#ifdef HAVE_SELINUX
+#include <selinux/selinux.h>
+#endif
#define USER_JOURNALS_MAX 1024
-typedef struct Server {
- int epoll_fd;
- int signal_fd;
- int syslog_fd;
- int native_fd;
+#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
+#define DEFAULT_RATE_LIMIT_BURST 200
+
+#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
+
+static const char* const storage_table[] = {
+ [STORAGE_AUTO] = "auto",
+ [STORAGE_VOLATILE] = "volatile",
+ [STORAGE_PERSISTENT] = "persistent",
+ [STORAGE_NONE] = "none"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(storage, Storage);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
+
+static const char* const split_mode_table[] = {
+ [SPLIT_NONE] = "none",
+ [SPLIT_UID] = "uid",
+ [SPLIT_LOGIN] = "login"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting");
+
+static uint64_t available_space(Server *s) {
+ char ids[33], *p;
+ const char *f;
+ sd_id128_t machine;
+ struct statvfs ss;
+ uint64_t sum = 0, avail = 0, ss_avail = 0;
+ int r;
+ DIR *d;
+ usec_t ts;
+ JournalMetrics *m;
+
+ ts = now(CLOCK_MONOTONIC);
+
+ if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts)
+ return s->cached_available_space;
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0)
+ return 0;
+
+ if (s->system_journal) {
+ f = "/var/log/journal/";
+ m = &s->system_metrics;
+ } else {
+ f = "/run/log/journal/";
+ m = &s->runtime_metrics;
+ }
+
+ assert(m);
+
+ p = strappend(f, sd_id128_to_string(machine, ids));
+ if (!p)
+ return 0;
+
+ d = opendir(p);
+ free(p);
+
+ if (!d)
+ return 0;
+
+ if (fstatvfs(dirfd(d), &ss) < 0)
+ goto finish;
+
+ for (;;) {
+ struct stat st;
+ struct dirent buf, *de;
+
+ r = readdir_r(d, &buf, &de);
+ if (r != 0)
+ break;
+
+ if (!de)
+ break;
+
+ if (!endswith(de->d_name, ".journal") &&
+ !endswith(de->d_name, ".journal~"))
+ continue;
+
+ if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
+ continue;
+
+ if (!S_ISREG(st.st_mode))
+ continue;
- JournalFile *runtime_journal;
- JournalFile *system_journal;
- Hashmap *user_journals;
+ sum += (uint64_t) st.st_blocks * 512UL;
+ }
- uint64_t seqnum;
+ avail = sum >= m->max_use ? 0 : m->max_use - sum;
- char *buffer;
- size_t buffer_size;
-} Server;
+ ss_avail = ss.f_bsize * ss.f_bavail;
+
+ ss_avail = ss_avail < m->keep_free ? 0 : ss_avail - m->keep_free;
+
+ if (ss_avail < avail)
+ avail = ss_avail;
+
+ s->cached_available_space = avail;
+ s->cached_available_space_timestamp = ts;
+
+finish:
+ closedir(d);
+
+ return avail;
+}
+
+static void server_read_file_gid(Server *s) {
+ const char *adm = "adm";
+ int r;
+
+ assert(s);
+
+ if (s->file_gid_valid)
+ return;
+
+ r = get_group_creds(&adm, &s->file_gid);
+ if (r < 0)
+ log_warning("Failed to resolve 'adm' group: %s", strerror(-r));
-static void fix_perms(JournalFile *f, uid_t uid) {
+ /* if we couldn't read the gid, then it will be 0, but that's
+ * fine and we shouldn't try to resolve the group again, so
+ * let's just pretend it worked right-away. */
+ s->file_gid_valid = true;
+}
+
+static void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
+ int r;
+#ifdef HAVE_ACL
acl_t acl;
acl_entry_t entry;
acl_permset_t permset;
- int r;
+#endif
assert(f);
- r = fchmod_and_fchown(f->fd, 0640, 0, 0);
+ server_read_file_gid(s);
+
+ r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
if (r < 0)
log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
+#ifdef HAVE_ACL
if (uid <= 0)
return;
finish:
acl_free(acl);
+#endif
}
static JournalFile* find_journal(Server *s, uid_t uid) {
char *p;
int r;
JournalFile *f;
- char ids[33];
sd_id128_t machine;
assert(s);
- /* We split up user logs only on /var, not on /run */
- if (!s->system_journal)
+ /* We split up user logs only on /var, not on /run. If the
+ * runtime file is open, we write to it exclusively, in order
+ * to guarantee proper order as soon as we flush /run to
+ * /var and close the runtime file. */
+
+ if (s->runtime_journal)
return s->runtime_journal;
if (uid <= 0)
if (f)
return f;
- if (asprintf(&p, "/var/log/journal/%s/user-%lu.journal", sd_id128_to_string(machine, ids), (unsigned long) uid) < 0)
+ if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-%lu.journal",
+ SD_ID128_FORMAT_VAL(machine), (unsigned long) uid) < 0)
return s->system_journal;
while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
journal_file_close(f);
}
- r = journal_file_open(p, O_RDWR|O_CREAT, 0640, s->system_journal, &f);
+ r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, s->system_journal, &f);
free(p);
if (r < 0)
return s->system_journal;
- fix_perms(f, uid);
+ server_fix_perms(s, f, uid);
r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
if (r < 0) {
return f;
}
-static void dispatch_message(Server *s, struct iovec *iovec, unsigned n, unsigned m, struct ucred *ucred, struct timeval *tv) {
+static void server_rotate(Server *s) {
+ JournalFile *f;
+ void *k;
+ Iterator i;
+ int r;
+
+ log_debug("Rotating...");
+
+ if (s->runtime_journal) {
+ r = journal_file_rotate(&s->runtime_journal, s->compress, false);
+ if (r < 0)
+ if (s->runtime_journal)
+ log_error("Failed to rotate %s: %s", s->runtime_journal->path, strerror(-r));
+ else
+ log_error("Failed to create new runtime journal: %s", strerror(-r));
+ else
+ server_fix_perms(s, s->runtime_journal, 0);
+ }
+
+ if (s->system_journal) {
+ r = journal_file_rotate(&s->system_journal, s->compress, s->seal);
+ if (r < 0)
+ if (s->system_journal)
+ log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
+ else
+ log_error("Failed to create new system journal: %s", strerror(-r));
+
+ else
+ server_fix_perms(s, s->system_journal, 0);
+ }
+
+ HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
+ r = journal_file_rotate(&f, s->compress, s->seal);
+ if (r < 0)
+ if (f->path)
+ log_error("Failed to rotate %s: %s", f->path, strerror(-r));
+ else
+ log_error("Failed to create user journal: %s", strerror(-r));
+ else {
+ hashmap_replace(s->user_journals, k, f);
+ server_fix_perms(s, f, PTR_TO_UINT32(k));
+ }
+ }
+}
+
+static void server_vacuum(Server *s) {
+ char *p;
+ char ids[33];
+ sd_id128_t machine;
+ int r;
+
+ log_debug("Vacuuming...");
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0) {
+ log_error("Failed to get machine ID: %s", strerror(-r));
+ return;
+ }
+
+ sd_id128_to_string(machine, ids);
+
+ if (s->system_journal) {
+ p = strappend("/var/log/journal/", ids);
+ if (!p) {
+ log_oom();
+ return;
+ }
+
+ r = journal_directory_vacuum(p, s->system_metrics.max_use, s->system_metrics.keep_free);
+ if (r < 0 && r != -ENOENT)
+ log_error("Failed to vacuum %s: %s", p, strerror(-r));
+ free(p);
+ }
+
+ if (s->runtime_journal) {
+ p = strappend("/run/log/journal/", ids);
+ if (!p) {
+ log_oom();
+ return;
+ }
+
+ r = journal_directory_vacuum(p, s->runtime_metrics.max_use, s->runtime_metrics.keep_free);
+ if (r < 0 && r != -ENOENT)
+ log_error("Failed to vacuum %s: %s", p, strerror(-r));
+ free(p);
+ }
+
+ s->cached_available_space_timestamp = 0;
+}
+
+static char *shortened_cgroup_path(pid_t pid) {
+ int r;
+ char *process_path, *init_path, *path;
+
+ assert(pid > 0);
+
+ r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &process_path);
+ if (r < 0)
+ return NULL;
+
+ r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &init_path);
+ if (r < 0) {
+ free(process_path);
+ return NULL;
+ }
+
+ if (endswith(init_path, "/system"))
+ init_path[strlen(init_path) - 7] = 0;
+ else if (streq(init_path, "/"))
+ init_path[0] = 0;
+
+ if (startswith(process_path, init_path)) {
+ char *p;
+
+ p = strdup(process_path + strlen(init_path));
+ if (!p) {
+ free(process_path);
+ free(init_path);
+ return NULL;
+ }
+ path = p;
+ } else {
+ path = process_path;
+ process_path = NULL;
+ }
+
+ free(process_path);
+ free(init_path);
+
+ return path;
+}
+
+static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n) {
+ JournalFile *f;
+ bool vacuumed = false;
+ int r;
+
+ assert(s);
+ assert(iovec);
+ assert(n > 0);
+
+ f = find_journal(s, uid);
+ if (!f)
+ return;
+
+ if (journal_file_rotate_suggested(f)) {
+ log_debug("Journal header limits reached or header out-of-date, rotating.");
+ server_rotate(s);
+ server_vacuum(s);
+ vacuumed = true;
+
+ f = find_journal(s, uid);
+ if (!f)
+ return;
+ }
+
+ for (;;) {
+ r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
+ if (r >= 0)
+ return;
+
+ if (vacuumed ||
+ (r != -E2BIG && /* hit limit */
+ r != -EFBIG && /* hit fs limit */
+ r != -EDQUOT && /* quota hit */
+ r != -ENOSPC && /* disk full */
+ r != -EBADMSG && /* corrupted */
+ r != -ENODATA && /* truncated */
+ r != -EHOSTDOWN && /* other machine */
+ r != -EPROTONOSUPPORT && /* unsupported feature */
+ r != -EBUSY && /* unclean shutdown */
+ r != -ESHUTDOWN /* already archived */)) {
+ log_error("Failed to write entry, ignoring: %s", strerror(-r));
+ return;
+ }
+
+ if (r == -E2BIG || r == -EFBIG || r == EDQUOT || r == ENOSPC)
+ log_debug("Allocation limit reached, rotating.");
+ else if (r == -EHOSTDOWN)
+ log_info("Journal file from other machine, rotating.");
+ else if (r == -EBUSY)
+ log_info("Unclean shutdown, rotating.");
+ else
+ log_warning("Journal file corrupted, rotating.");
+
+ server_rotate(s);
+ server_vacuum(s);
+ vacuumed = true;
+
+ f = find_journal(s, uid);
+ if (!f)
+ return;
+
+ log_debug("Retrying write.");
+ }
+}
+
+static void dispatch_message_real(
+ Server *s,
+ struct iovec *iovec, unsigned n, unsigned m,
+ struct ucred *ucred,
+ struct timeval *tv,
+ const char *label, size_t label_len,
+ const char *unit_id) {
+
char *pid = NULL, *uid = NULL, *gid = NULL,
*source_time = NULL, *boot_id = NULL, *machine_id = NULL,
*comm = NULL, *cmdline = NULL, *hostname = NULL,
*audit_session = NULL, *audit_loginuid = NULL,
- *exe = NULL, *cgroup = NULL;
+ *exe = NULL, *cgroup = NULL, *session = NULL,
+ *owner_uid = NULL, *unit = NULL, *selinux_context = NULL;
char idbuf[33];
sd_id128_t id;
int r;
char *t;
uid_t loginuid = 0, realuid = 0;
- JournalFile *f;
assert(s);
- assert(iovec || n == 0);
-
- if (n == 0)
- return;
-
- assert(n + 13 <= m);
+ assert(iovec);
+ assert(n > 0);
+ assert(n + N_IOVEC_META_FIELDS <= m);
if (ucred) {
- uint32_t session;
- char *path;
+ uint32_t audit;
+#ifdef HAVE_LOGIND
+ uid_t owner;
+#endif
realuid = ucred->uid;
r = get_process_comm(ucred->pid, &t);
if (r >= 0) {
comm = strappend("_COMM=", t);
+ free(t);
+
if (comm)
IOVEC_SET_STRING(iovec[n++], comm);
- free(t);
}
r = get_process_exe(ucred->pid, &t);
if (r >= 0) {
exe = strappend("_EXE=", t);
- if (comm)
- IOVEC_SET_STRING(iovec[n++], exe);
free(t);
+
+ if (exe)
+ IOVEC_SET_STRING(iovec[n++], exe);
}
r = get_process_cmdline(ucred->pid, LINE_MAX, false, &t);
if (r >= 0) {
cmdline = strappend("_CMDLINE=", t);
+ free(t);
+
if (cmdline)
IOVEC_SET_STRING(iovec[n++], cmdline);
- free(t);
}
- r = audit_session_from_pid(ucred->pid, &session);
+ r = audit_session_from_pid(ucred->pid, &audit);
if (r >= 0)
- if (asprintf(&audit_session, "_AUDIT_SESSION=%lu", (unsigned long) session) >= 0)
+ if (asprintf(&audit_session, "_AUDIT_SESSION=%lu", (unsigned long) audit) >= 0)
IOVEC_SET_STRING(iovec[n++], audit_session);
r = audit_loginuid_from_pid(ucred->pid, &loginuid);
if (asprintf(&audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid) >= 0)
IOVEC_SET_STRING(iovec[n++], audit_loginuid);
- r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, ucred->pid, &path);
- if (r >= 0) {
- cgroup = strappend("_SYSTEMD_CGROUP=", path);
+ t = shortened_cgroup_path(ucred->pid);
+ if (t) {
+ cgroup = strappend("_SYSTEMD_CGROUP=", t);
+ free(t);
+
if (cgroup)
IOVEC_SET_STRING(iovec[n++], cgroup);
- free(path);
}
+
+#ifdef HAVE_LOGIND
+ if (sd_pid_get_session(ucred->pid, &t) >= 0) {
+ session = strappend("_SYSTEMD_SESSION=", t);
+ free(t);
+
+ if (session)
+ IOVEC_SET_STRING(iovec[n++], session);
+ }
+
+ if (sd_pid_get_owner_uid(ucred->uid, &owner) >= 0)
+ if (asprintf(&owner_uid, "_SYSTEMD_OWNER_UID=%lu", (unsigned long) owner) >= 0)
+ IOVEC_SET_STRING(iovec[n++], owner_uid);
+#endif
+
+ if (cg_pid_get_unit(ucred->pid, &t) >= 0) {
+ unit = strappend("_SYSTEMD_UNIT=", t);
+ free(t);
+ } else if (unit_id)
+ unit = strappend("_SYSTEMD_UNIT=", unit_id);
+
+ if (unit)
+ IOVEC_SET_STRING(iovec[n++], unit);
+
+#ifdef HAVE_SELINUX
+ if (label) {
+ selinux_context = malloc(sizeof("_SELINUX_CONTEXT=") + label_len);
+ if (selinux_context) {
+ memcpy(selinux_context, "_SELINUX_CONTEXT=", sizeof("_SELINUX_CONTEXT=")-1);
+ memcpy(selinux_context+sizeof("_SELINUX_CONTEXT=")-1, label, label_len);
+ selinux_context[sizeof("_SELINUX_CONTEXT=")-1+label_len] = 0;
+ IOVEC_SET_STRING(iovec[n++], selinux_context);
+ }
+ } else {
+ security_context_t con;
+
+ if (getpidcon(ucred->pid, &con) >= 0) {
+ selinux_context = strappend("_SELINUX_CONTEXT=", con);
+ if (selinux_context)
+ IOVEC_SET_STRING(iovec[n++], selinux_context);
+
+ freecon(con);
+ }
+ }
+#endif
}
if (tv) {
t = gethostname_malloc();
if (t) {
hostname = strappend("_HOSTNAME=", t);
+ free(t);
if (hostname)
IOVEC_SET_STRING(iovec[n++], hostname);
- free(t);
}
assert(n <= m);
- f = find_journal(s, realuid == 0 ? 0 : loginuid);
- if (!f)
- log_warning("Dropping message, as we can't find a place to store the data.");
- else {
- r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
-
- if (r < 0)
- log_error("Failed to write entry, ignoring: %s", strerror(-r));
- }
+ write_to_journal(s,
+ s->split_mode == SPLIT_NONE ? 0 :
+ (s->split_mode == SPLIT_UID ? realuid :
+ (realuid == 0 ? 0 : loginuid)), iovec, n);
free(pid);
free(uid);
free(audit_session);
free(audit_loginuid);
free(cgroup);
-
+ free(session);
+ free(owner_uid);
+ free(unit);
+ free(selinux_context);
}
-static void process_syslog_message(Server *s, const char *buf, struct ucred *ucred, struct timeval *tv) {
- char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL;
- struct iovec iovec[16];
- unsigned n = 0;
- int priority = LOG_USER | LOG_INFO;
+void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
+ char mid[11 + 32 + 1];
+ char buffer[16 + LINE_MAX + 1];
+ struct iovec iovec[N_IOVEC_META_FIELDS + 4];
+ int n = 0;
+ va_list ap;
+ struct ucred ucred;
assert(s);
- assert(buf);
-
- parse_syslog_priority((char**) &buf, &priority);
- skip_syslog_date((char**) &buf);
+ assert(format);
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
+ IOVEC_SET_STRING(iovec[n++], "PRIORITY=6");
+ IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
+ memcpy(buffer, "MESSAGE=", 8);
+ va_start(ap, format);
+ vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap);
+ va_end(ap);
+ char_array_0(buffer);
+ IOVEC_SET_STRING(iovec[n++], buffer);
- message = strappend("MESSAGE=", buf);
- if (message)
- IOVEC_SET_STRING(iovec[n++], message);
+ snprintf(mid, sizeof(mid), "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(message_id));
+ char_array_0(mid);
+ IOVEC_SET_STRING(iovec[n++], mid);
- dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv);
+ zero(ucred);
+ ucred.pid = getpid();
+ ucred.uid = getuid();
+ ucred.gid = getgid();
- free(message);
- free(syslog_facility);
- free(syslog_priority);
+ dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL);
}
-static void process_native_message(Server *s, const void *buffer, size_t buffer_size, struct ucred *ucred, struct timeval *tv) {
- struct iovec *iovec = NULL;
- unsigned n = 0, m = 0, j;
- const char *p;
- size_t remaining;
+void server_dispatch_message(
+ Server *s,
+ struct iovec *iovec, unsigned n, unsigned m,
+ struct ucred *ucred,
+ struct timeval *tv,
+ const char *label, size_t label_len,
+ const char *unit_id,
+ int priority) {
+
+ int rl;
+ char *path = NULL, *c;
assert(s);
- assert(buffer || n == 0);
+ assert(iovec || n == 0);
- p = buffer;
- remaining = buffer_size;
+ if (n == 0)
+ return;
+
+ if (LOG_PRI(priority) > s->max_level_store)
+ return;
- while (remaining > 0) {
- const char *e, *q;
+ if (!ucred)
+ goto finish;
- e = memchr(p, '\n', remaining);
+ path = shortened_cgroup_path(ucred->pid);
+ if (!path)
+ goto finish;
- if (!e) {
- /* Trailing noise, let's ignore it, and flush what we collected */
- log_debug("Received message with trailing noise, ignoring.");
- break;
+ /* example: /user/lennart/3/foobar
+ * /system/dbus.service/foobar
+ *
+ * So let's cut of everything past the third /, since that is
+ * wher user directories start */
+
+ c = strchr(path, '/');
+ if (c) {
+ c = strchr(c+1, '/');
+ if (c) {
+ c = strchr(c+1, '/');
+ if (c)
+ *c = 0;
}
+ }
- if (e == p) {
- /* Entry separator */
- dispatch_message(s, iovec, n, m, ucred, tv);
- n = 0;
+ rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available_space(s));
- p++;
- remaining--;
- continue;
- }
+ if (rl == 0) {
+ free(path);
+ return;
+ }
- if (*p == '.') {
- /* Control command, ignore for now */
- remaining -= (e - p) + 1;
- p = e + 1;
- continue;
- }
+ /* Write a suppression message if we suppressed something */
+ if (rl > 1)
+ server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, "Suppressed %u messages from %s", rl - 1, path);
- /* A property follows */
+ free(path);
- if (n+13 >= m) {
- struct iovec *c;
- unsigned u;
+finish:
+ dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id);
+}
- u = MAX((n+13U) * 2U, 4U);
- c = realloc(iovec, u * sizeof(struct iovec));
- if (!c) {
- log_error("Out of memory");
- break;
- }
- iovec = c;
- m = u;
+static int system_journal_open(Server *s) {
+ int r;
+ char *fn;
+ sd_id128_t machine;
+ char ids[33];
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0)
+ return r;
+
+ sd_id128_to_string(machine, ids);
+
+ if (!s->system_journal &&
+ (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
+ access("/run/systemd/journal/flushed", F_OK) >= 0) {
+
+ /* If in auto mode: first try to create the machine
+ * path, but not the prefix.
+ *
+ * If in persistent mode: create /var/log/journal and
+ * the machine path */
+
+ if (s->storage == STORAGE_PERSISTENT)
+ (void) mkdir("/var/log/journal/", 0755);
+
+ fn = strappend("/var/log/journal/", ids);
+ if (!fn)
+ return -ENOMEM;
+
+ (void) mkdir(fn, 0755);
+ free(fn);
+
+ fn = strjoin("/var/log/journal/", ids, "/system.journal", NULL);
+ if (!fn)
+ return -ENOMEM;
+
+ r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
+ free(fn);
+
+ if (r >= 0)
+ server_fix_perms(s, s->system_journal, 0);
+ else if (r < 0) {
+
+ if (r != -ENOENT && r != -EROFS)
+ log_warning("Failed to open system journal: %s", strerror(-r));
+
+ r = 0;
}
+ }
+
+ if (!s->runtime_journal &&
+ (s->storage != STORAGE_NONE)) {
+
+ fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL);
+ if (!fn)
+ return -ENOMEM;
+
+ if (s->system_journal) {
+
+ /* Try to open the runtime journal, but only
+ * if it already exists, so that we can flush
+ * it into the system journal */
+
+ r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
+ free(fn);
+
+ if (r < 0) {
+ if (r != -ENOENT)
+ log_warning("Failed to open runtime journal: %s", strerror(-r));
- q = memchr(p, '=', e - p);
- if (q) {
- if (p[0] != '_') {
- /* If the field name starts with an
- * underscore, skip the variable,
- * since that indidates a trusted
- * field */
- iovec[n].iov_base = (char*) p;
- iovec[n].iov_len = e - p;
- n++;
+ r = 0;
}
- remaining -= (e - p) + 1;
- p = e + 1;
- continue;
} else {
- uint64_t l;
- char *k;
- if (remaining < e - p + 1 + sizeof(uint64_t) + 1) {
- log_debug("Failed to parse message, ignoring.");
- break;
- }
+ /* OK, we really need the runtime journal, so create
+ * it if necessary. */
- memcpy(&l, e + 1, sizeof(uint64_t));
- l = le64toh(l);
+ (void) mkdir_parents(fn, 0755);
+ r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
+ free(fn);
- if (remaining < e - p + 1 + sizeof(uint64_t) + l + 1 ||
- e[1+sizeof(uint64_t)+l] != '\n') {
- log_debug("Failed to parse message, ignoring.");
- break;
+ if (r < 0) {
+ log_error("Failed to open runtime journal: %s", strerror(-r));
+ return r;
}
+ }
- k = malloc((e - p) + 1 + l);
- if (!k) {
- log_error("Out of memory");
- break;
- }
+ if (s->runtime_journal)
+ server_fix_perms(s, s->runtime_journal, 0);
+ }
+
+ return r;
+}
+
+static int server_flush_to_var(Server *s) {
+ Object *o = NULL;
+ int r;
+ sd_id128_t machine;
+ sd_journal *j;
+
+ assert(s);
+
+ if (s->storage != STORAGE_AUTO &&
+ s->storage != STORAGE_PERSISTENT)
+ return 0;
+
+ if (!s->runtime_journal)
+ return 0;
+
+ system_journal_open(s);
+
+ if (!s->system_journal)
+ return 0;
+
+ log_debug("Flushing to /var...");
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0) {
+ log_error("Failed to get machine id: %s", strerror(-r));
+ return r;
+ }
+
+ r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
+ if (r < 0) {
+ log_error("Failed to read runtime journal: %s", strerror(-r));
+ return r;
+ }
+
+ SD_JOURNAL_FOREACH(j) {
+ JournalFile *f;
+
+ f = j->current_file;
+ assert(f && f->current_offset > 0);
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
+ if (r < 0) {
+ log_error("Can't read entry: %s", strerror(-r));
+ goto finish;
+ }
- memcpy(k, p, e - p);
- k[e - p] = '=';
- memcpy(k + (e - p) + 1, e + 1 + sizeof(uint64_t), l);
+ r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
+ if (r == -E2BIG) {
+ log_debug("Allocation limit reached.");
- if (k[0] != '_') {
- iovec[n].iov_base = k;
- iovec[n].iov_len = (e - p) + 1 + l;
- n++;
- } else
- free(k);
+ journal_file_post_change(s->system_journal);
+ server_rotate(s);
+ server_vacuum(s);
+
+ r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
+ }
- remaining -= (e - p) + 1 + sizeof(uint64_t) + l + 1;
- p = e + 1 + sizeof(uint64_t) + l + 1;
+ if (r < 0) {
+ log_error("Can't write entry: %s", strerror(-r));
+ goto finish;
}
}
- dispatch_message(s, iovec, n, m, ucred, tv);
+finish:
+ journal_file_post_change(s->system_journal);
+
+ journal_file_close(s->runtime_journal);
+ s->runtime_journal = NULL;
- for (j = 0; j < n; j++)
- if (iovec[j].iov_base < buffer ||
- (const uint8_t*) iovec[j].iov_base >= (const uint8_t*) buffer + buffer_size)
- free(iovec[j].iov_base);
+ if (r >= 0)
+ rm_rf("/run/log/journal", false, true, false);
+
+ return r;
}
static int process_event(Server *s, struct epoll_event *ev) {
assert(s);
-
- if (ev->events != EPOLLIN) {
- log_info("Got invalid event from epoll.");
- return -EIO;
- }
+ assert(ev);
if (ev->data.fd == s->signal_fd) {
struct signalfd_siginfo sfsi;
ssize_t n;
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
+
n = read(s->signal_fd, &sfsi, sizeof(sfsi));
if (n != sizeof(sfsi)) {
return -EIO;
if (errno == EINTR || errno == EAGAIN)
- return 0;
+ return 1;
return -errno;
}
- log_debug("Received SIG%s", signal_to_string(sfsi.ssi_signo));
+ log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
+
+ if (sfsi.ssi_signo == SIGUSR1) {
+ touch("/run/systemd/journal/flushed");
+ server_flush_to_var(s);
+ return 1;
+ }
+
+ if (sfsi.ssi_signo == SIGUSR2) {
+ server_rotate(s);
+ server_vacuum(s);
+ return 1;
+ }
+
return 0;
- }
+ } else if (ev->data.fd == s->dev_kmsg_fd) {
+ int r;
+
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
+
+ r = server_read_dev_kmsg(s);
+ if (r < 0)
+ return r;
+
+ return 1;
+
+ } else if (ev->data.fd == s->native_fd ||
+ ev->data.fd == s->syslog_fd) {
+
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
- if (ev->data.fd == s->native_fd ||
- ev->data.fd == s->syslog_fd) {
for (;;) {
struct msghdr msghdr;
struct iovec iovec;
struct ucred *ucred = NULL;
struct timeval *tv = NULL;
struct cmsghdr *cmsg;
+ char *label = NULL;
+ size_t label_len = 0;
union {
struct cmsghdr cmsghdr;
+
+ /* We use NAME_MAX space for the
+ * SELinux label here. The kernel
+ * currently enforces no limit, but
+ * according to suggestions from the
+ * SELinux people this will change and
+ * it will probably be identical to
+ * NAME_MAX. For now we use that, but
+ * this should be updated one day when
+ * the final limit is known.*/
uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
- CMSG_SPACE(sizeof(struct timeval))];
+ CMSG_SPACE(sizeof(struct timeval)) +
+ CMSG_SPACE(sizeof(int)) + /* fd */
+ CMSG_SPACE(NAME_MAX)]; /* selinux label */
} control;
ssize_t n;
int v;
+ int *fds = NULL;
+ unsigned n_fds = 0;
if (ioctl(ev->data.fd, SIOCINQ, &v) < 0) {
log_error("SIOCINQ failed: %m");
return -errno;
}
- if (v <= 0)
- return 1;
-
if (s->buffer_size < (size_t) v) {
void *b;
size_t l;
msghdr.msg_control = &control;
msghdr.msg_controllen = sizeof(control);
- n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT);
+ n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
if (n < 0) {
if (errno == EINTR || errno == EAGAIN)
cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
ucred = (struct ucred*) CMSG_DATA(cmsg);
else if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_SECURITY) {
+ label = (char*) CMSG_DATA(cmsg);
+ label_len = cmsg->cmsg_len - CMSG_LEN(0);
+ } else if (cmsg->cmsg_level == SOL_SOCKET &&
cmsg->cmsg_type == SO_TIMESTAMP &&
cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval)))
tv = (struct timeval*) CMSG_DATA(cmsg);
+ else if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_RIGHTS) {
+ fds = (int*) CMSG_DATA(cmsg);
+ n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+ }
}
if (ev->data.fd == s->syslog_fd) {
char *e;
- e = memchr(s->buffer, '\n', n);
- if (e)
- *e = 0;
- else
- s->buffer[n] = 0;
+ if (n > 0 && n_fds == 0) {
+ e = memchr(s->buffer, '\n', n);
+ if (e)
+ *e = 0;
+ else
+ s->buffer[n] = 0;
+
+ server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
+ } else if (n_fds > 0)
+ log_warning("Got file descriptors via syslog socket. Ignoring.");
+
+ } else {
+ if (n > 0 && n_fds == 0)
+ server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
+ else if (n == 0 && n_fds == 1)
+ server_process_native_file(s, fds[0], ucred, tv, label, label_len);
+ else if (n_fds > 0)
+ log_warning("Got too many file descriptors via native socket. Ignoring.");
+ }
- process_syslog_message(s, strstrip(s->buffer), ucred, tv);
- } else
- process_native_message(s, s->buffer, n, ucred, tv);
+ close_many(fds, n_fds);
}
return 1;
- }
-
- log_error("Unknown event.");
- return 0;
-}
-static int system_journal_open(Server *s) {
- int r;
- char *fn;
- sd_id128_t machine;
- char ids[33];
+ } else if (ev->data.fd == s->stdout_fd) {
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return r;
-
- /* First try to create the machine path, but not the prefix */
- fn = strappend("/var/log/journal/", sd_id128_to_string(machine, ids));
- if (!fn)
- return -ENOMEM;
- (void) mkdir(fn, 0755);
- free(fn);
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
- /* The create the system journal file */
- fn = join("/var/log/journal/", ids, "/system.journal", NULL);
- if (!fn)
- return -ENOMEM;
+ stdout_stream_new(s);
+ return 1;
- r = journal_file_open(fn, O_RDWR|O_CREAT, 0640, NULL, &s->system_journal);
- free(fn);
+ } else {
+ StdoutStream *stream;
- if (r >= 0) {
- fix_perms(s->system_journal, 0);
- return r;
- }
+ if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
- if (r < 0 && r != -ENOENT) {
- log_error("Failed to open system journal: %s", strerror(-r));
- return r;
- }
+ /* If it is none of the well-known fds, it must be an
+ * stdout stream fd. Note that this is a bit ugly here
+ * (since we rely that none of the well-known fds
+ * could be interpreted as pointer), but nonetheless
+ * safe, since the well-known fds would never get an
+ * fd > 4096, i.e. beyond the first memory page */
- /* /var didn't work, so try /run, but this time we
- * create the prefix too */
- fn = join("/run/log/journal/", ids, "/system.journal", NULL);
- if (!fn)
- return -ENOMEM;
+ stream = ev->data.ptr;
- (void) mkdir_parents(fn, 0755);
- r = journal_file_open(fn, O_RDWR|O_CREAT, 0640, NULL, &s->runtime_journal);
- free(fn);
+ if (stdout_stream_process(stream) <= 0)
+ stdout_stream_free(stream);
- if (r < 0) {
- log_error("Failed to open runtime journal: %s", strerror(-r));
- return r;
+ return 1;
}
- fix_perms(s->runtime_journal, 0);
- return r;
+ log_error("Unknown event.");
+ return 0;
}
-static int open_syslog_socket(Server *s) {
- union sockaddr_union sa;
- int one, r;
+static int open_signalfd(Server *s) {
+ sigset_t mask;
+ struct epoll_event ev;
assert(s);
- if (s->syslog_fd < 0) {
-
- s->syslog_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
- if (s->syslog_fd < 0) {
- log_error("socket() failed: %m");
- return -errno;
- }
-
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/syslog", sizeof(sa.un.sun_path));
-
- unlink(sa.un.sun_path);
-
- r = bind(s->syslog_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
- if (r < 0) {
- log_error("bind() failed: %m");
- return -errno;
- }
-
- chmod(sa.un.sun_path, 0666);
- }
+ assert_se(sigemptyset(&mask) == 0);
+ sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
+ assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_PASSCRED failed: %m");
+ s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
+ if (s->signal_fd < 0) {
+ log_error("signalfd(): %m");
return -errno;
}
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_TIMESTAMP failed: %m");
+ zero(ev);
+ ev.events = EPOLLIN;
+ ev.data.fd = s->signal_fd;
+
+ if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->signal_fd, &ev) < 0) {
+ log_error("epoll_ctl(): %m");
return -errno;
}
return 0;
}
-static int open_native_socket(Server*s) {
- union sockaddr_union sa;
- int one, r;
+static int server_parse_proc_cmdline(Server *s) {
+ char *line, *w, *state;
+ int r;
+ size_t l;
- assert(s);
+ if (detect_container(NULL) > 0)
+ return 0;
- if (s->native_fd < 0) {
+ r = read_one_line_file("/proc/cmdline", &line);
+ if (r < 0) {
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ return 0;
+ }
- s->native_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
- if (s->native_fd < 0) {
- log_error("socket() failed: %m");
- return -errno;
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+ char *word;
+
+ word = strndup(w, l);
+ if (!word) {
+ r = -ENOMEM;
+ goto finish;
}
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/journal", sizeof(sa.un.sun_path));
+ if (startswith(word, "systemd.journald.forward_to_syslog=")) {
+ r = parse_boolean(word + 35);
+ if (r < 0)
+ log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35);
+ else
+ s->forward_to_syslog = r;
+ } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) {
+ r = parse_boolean(word + 33);
+ if (r < 0)
+ log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
+ else
+ s->forward_to_kmsg = r;
+ } else if (startswith(word, "systemd.journald.forward_to_console=")) {
+ r = parse_boolean(word + 36);
+ if (r < 0)
+ log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
+ else
+ s->forward_to_console = r;
+ } else if (startswith(word, "systemd.journald"))
+ log_warning("Invalid systemd.journald parameter. Ignoring.");
+
+ free(word);
+ }
- unlink(sa.un.sun_path);
+ r = 0;
- r = bind(s->native_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
- if (r < 0) {
- log_error("bind() failed: %m");
- return -errno;
- }
+finish:
+ free(line);
+ return r;
+}
- chmod(sa.un.sun_path, 0666);
- }
+static int server_parse_config_file(Server *s) {
+ FILE *f;
+ const char *fn;
+ int r;
- one = 1;
- r = setsockopt(s->native_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_PASSCRED failed: %m");
- return -errno;
- }
+ assert(s);
- one = 1;
- r = setsockopt(s->native_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_TIMESTAMP failed: %m");
+ fn = "/etc/systemd/journald.conf";
+ f = fopen(fn, "re");
+ if (!f) {
+ if (errno == ENOENT)
+ return 0;
+
+ log_warning("Failed to open configuration file %s: %m", fn);
return -errno;
}
- return 0;
+ r = config_parse(fn, f, "Journal\0", config_item_perf_lookup, (void*) journald_gperf_lookup, false, s);
+ if (r < 0)
+ log_warning("Failed to parse configuration file: %s", strerror(-r));
+
+ fclose(f);
+
+ return r;
}
static int server_init(Server *s) {
int n, r, fd;
- struct epoll_event ev;
- sigset_t mask;
assert(s);
zero(*s);
- s->syslog_fd = s->native_fd = s->signal_fd = -1;
+ s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
+ s->compress = true;
+ s->seal = true;
+
+ s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
+ s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
+
+ s->forward_to_syslog = true;
+
+ s->max_level_store = LOG_DEBUG;
+ s->max_level_syslog = LOG_DEBUG;
+ s->max_level_kmsg = LOG_NOTICE;
+ s->max_level_console = LOG_INFO;
+
+ memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics));
+ memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics));
+
+ server_parse_config_file(s);
+ server_parse_proc_cmdline(s);
+
+ mkdir_p("/run/systemd/journal", 0755);
+
+ s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
+ if (!s->user_journals)
+ return log_oom();
+
+ s->mmap = mmap_cache_new();
+ if (!s->mmap)
+ return log_oom();
s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
if (s->epoll_fd < 0) {
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
- if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0) {
+ if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
- if (s->syslog_fd >= 0) {
- log_error("Too many /dev/log sockets passed.");
+ if (s->native_fd >= 0) {
+ log_error("Too many native sockets passed.");
return -EINVAL;
}
- s->syslog_fd = fd;
+ s->native_fd = fd;
- } else if (sd_is_socket(fd, AF_UNIX, SOCK_DGRAM, -1) > 0) {
+ } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
- if (s->native_fd >= 0) {
- log_error("Too many native sockets passed.");
+ if (s->stdout_fd >= 0) {
+ log_error("Too many stdout sockets passed.");
return -EINVAL;
}
- s->native_fd = fd;
+ s->stdout_fd = fd;
+
+ } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0) {
+
+ if (s->syslog_fd >= 0) {
+ log_error("Too many /dev/log sockets passed.");
+ return -EINVAL;
+ }
+
+ s->syslog_fd = fd;
+
} else {
log_error("Unknown socket passed.");
return -EINVAL;
}
}
- r = open_syslog_socket(s);
+ r = server_open_syslog_socket(s);
if (r < 0)
return r;
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.fd = s->syslog_fd;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->syslog_fd, &ev) < 0) {
- log_error("Failed to add syslog server fd to epoll object: %m");
- return -errno;
- }
+ r = server_open_native_socket(s);
+ if (r < 0)
+ return r;
- r = open_native_socket(s);
+ r = server_open_stdout_socket(s);
if (r < 0)
return r;
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.fd = s->native_fd;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->native_fd, &ev) < 0) {
- log_error("Failed to add native server fd to epoll object: %m");
- return -errno;
- }
+ r = server_open_dev_kmsg(s);
+ if (r < 0)
+ return r;
- s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
- if (!s->user_journals) {
- log_error("Out of memory.");
+ r = server_open_kernel_seqnum(s);
+ if (r < 0)
+ return r;
+
+ r = open_signalfd(s);
+ if (r < 0)
+ return r;
+
+ s->udev = udev_new();
+ if (!s->udev)
+ return -ENOMEM;
+
+ s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst);
+ if (!s->rate_limit)
return -ENOMEM;
- }
r = system_journal_open(s);
if (r < 0)
return r;
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
+ return 0;
+}
- s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
- if (s->signal_fd < 0) {
- log_error("signalfd(): %m");
- return -errno;
- }
+static void server_maybe_append_tags(Server *s) {
+#ifdef HAVE_GCRYPT
+ JournalFile *f;
+ Iterator i;
+ usec_t n;
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.fd = s->signal_fd;
+ n = now(CLOCK_REALTIME);
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->signal_fd, &ev) < 0) {
- log_error("epoll_ctl(): %m");
- return -errno;
- }
+ if (s->system_journal)
+ journal_file_maybe_append_tag(s->system_journal, n);
- return 0;
+ HASHMAP_FOREACH(f, s->user_journals, i)
+ journal_file_maybe_append_tag(f, n);
+#endif
}
static void server_done(Server *s) {
JournalFile *f;
assert(s);
+ while (s->stdout_streams)
+ stdout_stream_free(s->stdout_streams);
+
if (s->system_journal)
journal_file_close(s->system_journal);
if (s->native_fd >= 0)
close_nointr_nofail(s->native_fd);
+
+ if (s->stdout_fd >= 0)
+ close_nointr_nofail(s->stdout_fd);
+
+ if (s->dev_kmsg_fd >= 0)
+ close_nointr_nofail(s->dev_kmsg_fd);
+
+ if (s->rate_limit)
+ journal_rate_limit_free(s->rate_limit);
+
+ if (s->kernel_seqnum)
+ munmap(s->kernel_seqnum, sizeof(uint64_t));
+
+ free(s->buffer);
+ free(s->tty_path);
+
+ if (s->mmap)
+ mmap_cache_unref(s->mmap);
+
+ if (s->udev)
+ udev_unref(s->udev);
}
int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
- log_set_target(LOG_TARGET_CONSOLE);
+ log_set_target(LOG_TARGET_SAFE);
+ log_set_facility(LOG_SYSLOG);
log_parse_environment();
log_open();
if (r < 0)
goto finish;
+ server_vacuum(&server);
+ server_flush_to_var(&server);
+ server_flush_dev_kmsg(&server);
+
log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
+ server_driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
sd_notify(false,
"READY=1\n"
- "STATUS=Processing messages...");
-#
+ "STATUS=Processing requests...");
+
for (;;) {
struct epoll_event event;
+ int t;
+
+#ifdef HAVE_GCRYPT
+ usec_t u;
+
+ if (server.system_journal &&
+ journal_file_next_evolve_usec(server.system_journal, &u)) {
+ usec_t n;
- r = epoll_wait(server.epoll_fd, &event, 1, -1);
+ n = now(CLOCK_REALTIME);
+
+ if (n >= u)
+ t = 0;
+ else
+ t = (int) ((u - n + USEC_PER_MSEC - 1) / USEC_PER_MSEC);
+ } else
+#endif
+ t = -1;
+
+ r = epoll_wait(server.epoll_fd, &event, 1, t);
if (r < 0) {
if (errno == EINTR)
log_error("epoll_wait() failed: %m");
r = -errno;
goto finish;
- } else if (r == 0)
- break;
+ }
- r = process_event(&server, &event);
- if (r < 0)
- goto finish;
- else if (r == 0)
- break;
+ if (r > 0) {
+ r = process_event(&server, &event);
+ if (r < 0)
+ goto finish;
+ else if (r == 0)
+ break;
+ }
+
+ server_maybe_append_tags(&server);
+ server_maybe_warn_forward_syslog_missed(&server);
}
+ log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());
+ server_driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
+
finish:
sd_notify(false,
"STATUS=Shutting down...");
~ianmdlvl / elogind.git / blobdiff