#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>
#include "socket-util.h"
#include "cgroup-util.h"
#include "list.h"
-#include "journal-rate-limit.h"
-#include "journal-internal.h"
-#include "conf-parser.h"
-#include "journald.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>
#endif
#define USER_JOURNALS_MAX 1024
-#define STDOUT_STREAMS_MAX 4096
#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
#define DEFAULT_RATE_LIMIT_BURST 200
#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
-#define N_IOVEC_META_FIELDS 17
-#define N_IOVEC_KERNEL_FIELDS 64
-
-#define ENTRY_SIZE_MAX (1024*1024*32)
-
-typedef enum StdoutStreamState {
- STDOUT_STREAM_IDENTIFIER,
- STDOUT_STREAM_UNIT_ID,
- STDOUT_STREAM_PRIORITY,
- STDOUT_STREAM_LEVEL_PREFIX,
- STDOUT_STREAM_FORWARD_TO_SYSLOG,
- STDOUT_STREAM_FORWARD_TO_KMSG,
- STDOUT_STREAM_FORWARD_TO_CONSOLE,
- STDOUT_STREAM_RUNNING
-} StdoutStreamState;
-
-struct StdoutStream {
- Server *server;
- StdoutStreamState state;
-
- int fd;
-
- struct ucred ucred;
-#ifdef HAVE_SELINUX
- security_context_t security_context;
-#endif
-
- char *identifier;
- char *unit_id;
- int priority;
- bool level_prefix:1;
- bool forward_to_syslog:1;
- bool forward_to_kmsg:1;
- bool forward_to_console:1;
-
- char buffer[LINE_MAX+1];
- size_t length;
-
- LIST_FIELDS(StdoutStream, stdout_stream);
-};
-
static const char* const storage_table[] = {
[STORAGE_AUTO] = "auto",
[STORAGE_VOLATILE] = "volatile",
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;
char *p;
int r;
JournalFile *f;
- char ids[33];
sd_id128_t machine;
assert(s);
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_reliably(p, O_RDWR|O_CREAT, 0640, &s->system_metrics, 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)
Iterator i;
int r;
- log_info("Rotating...");
+ log_debug("Rotating...");
if (s->runtime_journal) {
- r = journal_file_rotate(&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));
}
if (s->system_journal) {
- r = journal_file_rotate(&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));
}
HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
- r = journal_file_rotate(&f);
+ 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));
log_error("Failed to create user journal: %s", strerror(-r));
else {
hashmap_replace(s->user_journals, k, f);
- server_fix_perms(s, s->system_journal, PTR_TO_UINT32(k));
+ server_fix_perms(s, f, PTR_TO_UINT32(k));
}
}
}
sd_id128_t machine;
int r;
- log_info("Vacuuming...");
+ log_debug("Vacuuming...");
r = sd_id128_get_machine(&machine);
if (r < 0) {
sd_id128_to_string(machine, ids);
if (s->system_journal) {
- if (asprintf(&p, "/var/log/journal/%s", ids) < 0) {
+ p = strappend("/var/log/journal/", ids);
+ if (!p) {
log_oom();
return;
}
}
if (s->runtime_journal) {
- if (asprintf(&p, "/run/log/journal/%s", ids) < 0) {
+ p = strappend("/run/log/journal/", ids);
+ if (!p) {
log_oom();
return;
}
return;
if (journal_file_rotate_suggested(f)) {
- log_info("Journal header limits reached or header out-of-date, rotating.");
+ log_debug("Journal header limits reached or header out-of-date, rotating.");
server_rotate(s);
server_vacuum(s);
vacuumed = true;
}
if (r == -E2BIG || r == -EFBIG || r == EDQUOT || r == ENOSPC)
- log_info("Allocation limit reached, rotating.");
+ log_debug("Allocation limit reached, rotating.");
else if (r == -EHOSTDOWN)
log_info("Journal file from other machine, rotating.");
else if (r == -EBUSY)
- log_info("Unlcean shutdown, rotating.");
+ log_info("Unclean shutdown, rotating.");
else
log_warning("Journal file corrupted, rotating.");
if (!f)
return;
- log_info("Retrying write.");
+ log_debug("Retrying write.");
}
}
assert(n <= m);
- write_to_journal(s, realuid == 0 ? 0 : loginuid, iovec, n);
+ 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(selinux_context);
}
-static void driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
+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];
dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL);
}
-static void 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) {
+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;
/* Write a suppression message if we suppressed something */
if (rl > 1)
- driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, "Suppressed %u messages from %s", rl - 1, path);
+ server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED, "Suppressed %u messages from %s", rl - 1, path);
free(path);
dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id);
}
-static void forward_syslog_iovec(Server *s, const struct iovec *iovec, unsigned n_iovec, struct ucred *ucred, struct timeval *tv) {
- struct msghdr msghdr;
- struct cmsghdr *cmsg;
- union {
- struct cmsghdr cmsghdr;
- uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
- } control;
- union sockaddr_union sa;
- assert(s);
- assert(iovec);
- assert(n_iovec > 0);
+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;
- zero(msghdr);
- msghdr.msg_iov = (struct iovec*) iovec;
- msghdr.msg_iovlen = n_iovec;
+ sd_id128_to_string(machine, ids);
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/journal/syslog", sizeof(sa.un.sun_path));
- msghdr.msg_name = &sa;
- msghdr.msg_namelen = offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path);
+ if (!s->system_journal &&
+ (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
+ access("/run/systemd/journal/flushed", F_OK) >= 0) {
- if (ucred) {
- zero(control);
- msghdr.msg_control = &control;
- msghdr.msg_controllen = sizeof(control);
-
- cmsg = CMSG_FIRSTHDR(&msghdr);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_CREDENTIALS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
- memcpy(CMSG_DATA(cmsg), ucred, sizeof(struct ucred));
- msghdr.msg_controllen = cmsg->cmsg_len;
- }
+ /* 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 */
- /* Forward the syslog message we received via /dev/log to
- * /run/systemd/syslog. Unfortunately we currently can't set
- * the SO_TIMESTAMP auxiliary data, and hence we don't. */
+ if (s->storage == STORAGE_PERSISTENT)
+ (void) mkdir("/var/log/journal/", 0755);
- if (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0)
- return;
+ fn = strappend("/var/log/journal/", ids);
+ if (!fn)
+ return -ENOMEM;
- /* The socket is full? I guess the syslog implementation is
- * too slow, and we shouldn't wait for that... */
- if (errno == EAGAIN)
- return;
+ (void) mkdir(fn, 0755);
+ free(fn);
- if (ucred && errno == ESRCH) {
- struct ucred u;
+ fn = strjoin("/var/log/journal/", ids, "/system.journal", NULL);
+ if (!fn)
+ return -ENOMEM;
- /* Hmm, presumably the sender process vanished
- * by now, so let's fix it as good as we
- * can, and retry */
+ 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);
- u = *ucred;
- u.pid = getpid();
- memcpy(CMSG_DATA(cmsg), &u, sizeof(struct ucred));
+ if (r >= 0)
+ server_fix_perms(s, s->system_journal, 0);
+ else if (r < 0) {
- if (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0)
- return;
+ if (r != -ENOENT && r != -EROFS)
+ log_warning("Failed to open system journal: %s", strerror(-r));
- if (errno == EAGAIN)
- return;
+ r = 0;
+ }
}
- if (errno != ENOENT)
- log_debug("Failed to forward syslog message: %m");
-}
+ if (!s->runtime_journal &&
+ (s->storage != STORAGE_NONE)) {
-static void forward_syslog_raw(Server *s, int priority, const char *buffer, struct ucred *ucred, struct timeval *tv) {
- struct iovec iovec;
+ fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL);
+ if (!fn)
+ return -ENOMEM;
- assert(s);
- assert(buffer);
+ if (s->system_journal) {
- if (LOG_PRI(priority) > s->max_level_syslog)
- return;
+ /* Try to open the runtime journal, but only
+ * if it already exists, so that we can flush
+ * it into the system journal */
- IOVEC_SET_STRING(iovec, buffer);
- forward_syslog_iovec(s, &iovec, 1, ucred, tv);
-}
+ r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
+ free(fn);
-static void forward_syslog(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred, struct timeval *tv) {
- struct iovec iovec[5];
- char header_priority[6], header_time[64], header_pid[16];
- int n = 0;
- time_t t;
- struct tm *tm;
- char *ident_buf = NULL;
+ if (r < 0) {
+ if (r != -ENOENT)
+ log_warning("Failed to open runtime journal: %s", strerror(-r));
- assert(s);
- assert(priority >= 0);
- assert(priority <= 999);
- assert(message);
+ r = 0;
+ }
- if (LOG_PRI(priority) > s->max_level_syslog)
- return;
+ } else {
- /* First: priority field */
- snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
- char_array_0(header_priority);
- IOVEC_SET_STRING(iovec[n++], header_priority);
+ /* OK, we really need the runtime journal, so create
+ * it if necessary. */
- /* Second: timestamp */
- t = tv ? tv->tv_sec : ((time_t) (now(CLOCK_REALTIME) / USEC_PER_SEC));
- tm = localtime(&t);
- if (!tm)
- return;
- if (strftime(header_time, sizeof(header_time), "%h %e %T ", tm) <= 0)
- return;
- IOVEC_SET_STRING(iovec[n++], header_time);
+ (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);
- /* Third: identifier and PID */
- if (ucred) {
- if (!identifier) {
- get_process_comm(ucred->pid, &ident_buf);
- identifier = ident_buf;
+ if (r < 0) {
+ log_error("Failed to open runtime journal: %s", strerror(-r));
+ return r;
+ }
}
- snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
- char_array_0(header_pid);
-
- if (identifier)
- IOVEC_SET_STRING(iovec[n++], identifier);
-
- IOVEC_SET_STRING(iovec[n++], header_pid);
- } else if (identifier) {
- IOVEC_SET_STRING(iovec[n++], identifier);
- IOVEC_SET_STRING(iovec[n++], ": ");
+ if (s->runtime_journal)
+ server_fix_perms(s, s->runtime_journal, 0);
}
- /* Fourth: message */
- IOVEC_SET_STRING(iovec[n++], message);
-
- forward_syslog_iovec(s, iovec, n, ucred, tv);
-
- free(ident_buf);
-}
-
-static int fixup_priority(int priority) {
-
- if ((priority & LOG_FACMASK) == 0)
- return (priority & LOG_PRIMASK) | LOG_USER;
-
- return priority;
+ return r;
}
-static void forward_kmsg(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred) {
- struct iovec iovec[5];
- char header_priority[6], header_pid[16];
- int n = 0;
- char *ident_buf = NULL;
+static int server_flush_to_var(Server *s) {
+ Object *o = NULL;
+ int r;
+ sd_id128_t machine;
+ sd_journal *j;
assert(s);
- assert(priority >= 0);
- assert(priority <= 999);
- assert(message);
-
- if (_unlikely_(LOG_PRI(priority) > s->max_level_kmsg))
- return;
-
- if (_unlikely_(s->dev_kmsg_fd < 0))
- return;
- /* Never allow messages with kernel facility to be written to
- * kmsg, regardless where the data comes from. */
- priority = fixup_priority(priority);
+ if (s->storage != STORAGE_AUTO &&
+ s->storage != STORAGE_PERSISTENT)
+ return 0;
- /* First: priority field */
- snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
- char_array_0(header_priority);
- IOVEC_SET_STRING(iovec[n++], header_priority);
+ if (!s->runtime_journal)
+ return 0;
- /* Second: identifier and PID */
- if (ucred) {
- if (!identifier) {
- get_process_comm(ucred->pid, &ident_buf);
- identifier = ident_buf;
- }
+ system_journal_open(s);
- snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
- char_array_0(header_pid);
+ if (!s->system_journal)
+ return 0;
- if (identifier)
- IOVEC_SET_STRING(iovec[n++], identifier);
+ log_debug("Flushing to /var...");
- IOVEC_SET_STRING(iovec[n++], header_pid);
- } else if (identifier) {
- IOVEC_SET_STRING(iovec[n++], identifier);
- IOVEC_SET_STRING(iovec[n++], ": ");
+ r = sd_id128_get_machine(&machine);
+ if (r < 0) {
+ log_error("Failed to get machine id: %s", strerror(-r));
+ return r;
}
- /* Fourth: message */
- IOVEC_SET_STRING(iovec[n++], message);
- IOVEC_SET_STRING(iovec[n++], "\n");
-
- if (writev(s->dev_kmsg_fd, iovec, n) < 0)
- log_debug("Failed to write to /dev/kmsg for logging: %s", strerror(errno));
-
- free(ident_buf);
-}
-
-static void forward_console(Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred) {
- struct iovec iovec[4];
- char header_pid[16];
- int n = 0, fd;
- char *ident_buf = NULL;
- const char *tty;
+ r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
+ if (r < 0) {
+ log_error("Failed to read runtime journal: %s", strerror(-r));
+ return r;
+ }
- assert(s);
- assert(message);
+ SD_JOURNAL_FOREACH(j) {
+ JournalFile *f;
- if (LOG_PRI(priority) > s->max_level_console)
- return;
+ f = j->current_file;
+ assert(f && f->current_offset > 0);
- /* First: identifier and PID */
- if (ucred) {
- if (!identifier) {
- get_process_comm(ucred->pid, &ident_buf);
- identifier = ident_buf;
+ 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;
}
- snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
- char_array_0(header_pid);
-
- if (identifier)
- IOVEC_SET_STRING(iovec[n++], identifier);
-
- IOVEC_SET_STRING(iovec[n++], header_pid);
- } else if (identifier) {
- IOVEC_SET_STRING(iovec[n++], identifier);
- IOVEC_SET_STRING(iovec[n++], ": ");
- }
+ r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
+ if (r == -E2BIG) {
+ log_debug("Allocation limit reached.");
- /* Third: message */
- IOVEC_SET_STRING(iovec[n++], message);
- IOVEC_SET_STRING(iovec[n++], "\n");
+ journal_file_post_change(s->system_journal);
+ server_rotate(s);
+ server_vacuum(s);
- tty = s->tty_path ? s->tty_path : "/dev/console";
+ r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
+ }
- fd = open_terminal(tty, O_WRONLY|O_NOCTTY|O_CLOEXEC);
- if (fd < 0) {
- log_debug("Failed to open %s for logging: %s", tty, strerror(errno));
- goto finish;
+ if (r < 0) {
+ log_error("Can't write entry: %s", strerror(-r));
+ goto finish;
+ }
}
- if (writev(fd, iovec, n) < 0)
- log_debug("Failed to write to %s for logging: %s", tty, strerror(errno));
-
- close_nointr_nofail(fd);
-
finish:
- free(ident_buf);
-}
-
-static void read_identifier(const char **buf, char **identifier, char **pid) {
- const char *p;
- char *t;
- size_t l, e;
-
- assert(buf);
- assert(identifier);
- assert(pid);
-
- p = *buf;
-
- p += strspn(p, WHITESPACE);
- l = strcspn(p, WHITESPACE);
-
- if (l <= 0 ||
- p[l-1] != ':')
- return;
-
- e = l;
- l--;
-
- if (p[l-1] == ']') {
- size_t k = l-1;
-
- for (;;) {
-
- if (p[k] == '[') {
- t = strndup(p+k+1, l-k-2);
- if (t)
- *pid = t;
-
- l = k;
- break;
- }
-
- if (k == 0)
- break;
+ journal_file_post_change(s->system_journal);
- k--;
- }
- }
+ journal_file_close(s->runtime_journal);
+ s->runtime_journal = NULL;
- t = strndup(p, l);
- if (t)
- *identifier = t;
+ if (r >= 0)
+ rm_rf("/run/log/journal", false, true, false);
- *buf = p + e;
- *buf += strspn(*buf, WHITESPACE);
+ return r;
}
-static void process_syslog_message(Server *s, const char *buf, struct ucred *ucred, struct timeval *tv, const char *label, size_t label_len) {
- char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
- struct iovec iovec[N_IOVEC_META_FIELDS + 6];
- unsigned n = 0;
- int priority = LOG_USER | LOG_INFO;
- char *identifier = NULL, *pid = NULL;
- const char *orig;
-
+static int process_event(Server *s, struct epoll_event *ev) {
assert(s);
- assert(buf);
-
- orig = buf;
- parse_syslog_priority((char**) &buf, &priority);
-
- if (s->forward_to_syslog)
- forward_syslog_raw(s, priority, orig, ucred, tv);
-
- skip_syslog_date((char**) &buf);
- read_identifier(&buf, &identifier, &pid);
-
- if (s->forward_to_kmsg)
- forward_kmsg(s, priority, identifier, buf, ucred);
+ assert(ev);
- if (s->forward_to_console)
- forward_console(s, priority, identifier, buf, ucred);
+ if (ev->data.fd == s->signal_fd) {
+ struct signalfd_siginfo sfsi;
+ ssize_t n;
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
+ n = read(s->signal_fd, &sfsi, sizeof(sfsi));
+ if (n != sizeof(sfsi)) {
- if (priority & LOG_FACMASK)
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
+ if (n >= 0)
+ return -EIO;
- if (identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
- }
+ if (errno == EINTR || errno == EAGAIN)
+ return 1;
- if (pid) {
- syslog_pid = strappend("SYSLOG_PID=", pid);
- if (syslog_pid)
- IOVEC_SET_STRING(iovec[n++], syslog_pid);
- }
+ return -errno;
+ }
- message = strappend("MESSAGE=", buf);
- if (message)
- IOVEC_SET_STRING(iovec[n++], message);
+ log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
- dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, NULL, priority);
+ if (sfsi.ssi_signo == SIGUSR1) {
+ touch("/run/systemd/journal/flushed");
+ server_flush_to_var(s);
+ return 1;
+ }
- free(message);
- free(identifier);
- free(pid);
- free(syslog_priority);
- free(syslog_facility);
- free(syslog_identifier);
- free(syslog_pid);
-}
+ if (sfsi.ssi_signo == SIGUSR2) {
+ server_rotate(s);
+ server_vacuum(s);
+ return 1;
+ }
-static bool valid_user_field(const char *p, size_t l) {
- const char *a;
+ return 0;
- /* We kinda enforce POSIX syntax recommendations for
- environment variables here, but make a couple of additional
- requirements.
+ } else if (ev->data.fd == s->dev_kmsg_fd) {
+ int r;
- http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html */
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
- /* No empty field names */
- if (l <= 0)
- return false;
+ r = server_read_dev_kmsg(s);
+ if (r < 0)
+ return r;
- /* Don't allow names longer than 64 chars */
- if (l > 64)
- return false;
+ return 1;
- /* Variables starting with an underscore are protected */
- if (p[0] == '_')
- return false;
+ } else if (ev->data.fd == s->native_fd ||
+ ev->data.fd == s->syslog_fd) {
- /* Don't allow digits as first character */
- if (p[0] >= '0' && p[0] <= '9')
- return false;
-
- /* Only allow A-Z0-9 and '_' */
- for (a = p; a < p + l; a++)
- if (!((*a >= 'A' && *a <= 'Z') ||
- (*a >= '0' && *a <= '9') ||
- *a == '_'))
- return false;
-
- return true;
-}
-
-static void process_native_message(
- Server *s,
- const void *buffer, size_t buffer_size,
- struct ucred *ucred,
- struct timeval *tv,
- const char *label, size_t label_len) {
-
- struct iovec *iovec = NULL;
- unsigned n = 0, m = 0, j, tn = (unsigned) -1;
- const char *p;
- size_t remaining;
- int priority = LOG_INFO;
- char *identifier = NULL, *message = NULL;
-
- assert(s);
- assert(buffer || buffer_size == 0);
-
- p = buffer;
- remaining = buffer_size;
-
- while (remaining > 0) {
- const char *e, *q;
-
- e = memchr(p, '\n', remaining);
-
- if (!e) {
- /* Trailing noise, let's ignore it, and flush what we collected */
- log_debug("Received message with trailing noise, ignoring.");
- break;
- }
-
- if (e == p) {
- /* Entry separator */
- dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority);
- n = 0;
- priority = LOG_INFO;
-
- p++;
- remaining--;
- continue;
- }
-
- if (*p == '.' || *p == '#') {
- /* Ignore control commands for now, and
- * comments too. */
- remaining -= (e - p) + 1;
- p = e + 1;
- continue;
- }
-
- /* A property follows */
-
- if (n+N_IOVEC_META_FIELDS >= m) {
- struct iovec *c;
- unsigned u;
-
- u = MAX((n+N_IOVEC_META_FIELDS+1) * 2U, 4U);
- c = realloc(iovec, u * sizeof(struct iovec));
- if (!c) {
- log_oom();
- break;
- }
-
- iovec = c;
- m = u;
- }
-
- q = memchr(p, '=', e - p);
- if (q) {
- if (valid_user_field(p, q - p)) {
- size_t l;
-
- l = e - p;
-
- /* 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 = l;
- n++;
-
- /* We need to determine the priority
- * of this entry for the rate limiting
- * logic */
- if (l == 10 &&
- memcmp(p, "PRIORITY=", 9) == 0 &&
- p[9] >= '0' && p[9] <= '9')
- priority = (priority & LOG_FACMASK) | (p[9] - '0');
-
- else if (l == 17 &&
- memcmp(p, "SYSLOG_FACILITY=", 16) == 0 &&
- p[16] >= '0' && p[16] <= '9')
- priority = (priority & LOG_PRIMASK) | ((p[16] - '0') << 3);
-
- else if (l == 18 &&
- memcmp(p, "SYSLOG_FACILITY=", 16) == 0 &&
- p[16] >= '0' && p[16] <= '9' &&
- p[17] >= '0' && p[17] <= '9')
- priority = (priority & LOG_PRIMASK) | (((p[16] - '0')*10 + (p[17] - '0')) << 3);
-
- else if (l >= 19 &&
- memcmp(p, "SYSLOG_IDENTIFIER=", 18) == 0) {
- char *t;
-
- t = strndup(p + 18, l - 18);
- if (t) {
- free(identifier);
- identifier = t;
- }
- } else if (l >= 8 &&
- memcmp(p, "MESSAGE=", 8) == 0) {
- char *t;
-
- t = strndup(p + 8, l - 8);
- if (t) {
- free(message);
- message = t;
- }
- }
- }
-
- remaining -= (e - p) + 1;
- p = e + 1;
- continue;
- } else {
- le64_t l_le;
- uint64_t l;
- char *k;
-
- if (remaining < e - p + 1 + sizeof(uint64_t) + 1) {
- log_debug("Failed to parse message, ignoring.");
- break;
- }
-
- memcpy(&l_le, e + 1, sizeof(uint64_t));
- l = le64toh(l_le);
-
- 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;
- }
-
- k = malloc((e - p) + 1 + l);
- if (!k) {
- log_oom();
- break;
- }
-
- memcpy(k, p, e - p);
- k[e - p] = '=';
- memcpy(k + (e - p) + 1, e + 1 + sizeof(uint64_t), l);
-
- if (valid_user_field(p, e - p)) {
- iovec[n].iov_base = k;
- iovec[n].iov_len = (e - p) + 1 + l;
- n++;
- } else
- free(k);
-
- remaining -= (e - p) + 1 + sizeof(uint64_t) + l + 1;
- p = e + 1 + sizeof(uint64_t) + l + 1;
- }
- }
-
- if (n <= 0)
- goto finish;
-
- tn = n++;
- IOVEC_SET_STRING(iovec[tn], "_TRANSPORT=journal");
-
- if (message) {
- if (s->forward_to_syslog)
- forward_syslog(s, priority, identifier, message, ucred, tv);
-
- if (s->forward_to_kmsg)
- forward_kmsg(s, priority, identifier, message, ucred);
-
- if (s->forward_to_console)
- forward_console(s, priority, identifier, message, ucred);
- }
-
- dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority);
-
-finish:
- for (j = 0; j < n; j++) {
- if (j == tn)
- continue;
-
- if (iovec[j].iov_base < buffer ||
- (const uint8_t*) iovec[j].iov_base >= (const uint8_t*) buffer + buffer_size)
- free(iovec[j].iov_base);
- }
-
- free(iovec);
- free(identifier);
- free(message);
-}
-
-static void process_native_file(
- Server *s,
- int fd,
- struct ucred *ucred,
- struct timeval *tv,
- const char *label, size_t label_len) {
-
- struct stat st;
- void *p;
- ssize_t n;
-
- assert(s);
- assert(fd >= 0);
-
- /* Data is in the passed file, since it didn't fit in a
- * datagram. We can't map the file here, since clients might
- * then truncate it and trigger a SIGBUS for us. So let's
- * stupidly read it */
-
- if (fstat(fd, &st) < 0) {
- log_error("Failed to stat passed file, ignoring: %m");
- return;
- }
-
- if (!S_ISREG(st.st_mode)) {
- log_error("File passed is not regular. Ignoring.");
- return;
- }
-
- if (st.st_size <= 0)
- return;
-
- if (st.st_size > ENTRY_SIZE_MAX) {
- log_error("File passed too large. Ignoring.");
- return;
- }
-
- p = malloc(st.st_size);
- if (!p) {
- log_oom();
- return;
- }
-
- n = pread(fd, p, st.st_size, 0);
- if (n < 0)
- log_error("Failed to read file, ignoring: %s", strerror(-n));
- else if (n > 0)
- process_native_message(s, p, n, ucred, tv, label, label_len);
-
- free(p);
-}
-
-static int stdout_stream_log(StdoutStream *s, const char *p) {
- struct iovec iovec[N_IOVEC_META_FIELDS + 5];
- char *message = NULL, *syslog_priority = NULL, *syslog_facility = NULL, *syslog_identifier = NULL;
- unsigned n = 0;
- int priority;
- char *label = NULL;
- size_t label_len = 0;
-
- assert(s);
- assert(p);
-
- if (isempty(p))
- return 0;
-
- priority = s->priority;
-
- if (s->level_prefix)
- parse_syslog_priority((char**) &p, &priority);
-
- if (s->forward_to_syslog || s->server->forward_to_syslog)
- forward_syslog(s->server, fixup_priority(priority), s->identifier, p, &s->ucred, NULL);
-
- if (s->forward_to_kmsg || s->server->forward_to_kmsg)
- forward_kmsg(s->server, priority, s->identifier, p, &s->ucred);
-
- if (s->forward_to_console || s->server->forward_to_console)
- forward_console(s->server, priority, s->identifier, p, &s->ucred);
-
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=stdout");
-
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
-
- if (priority & LOG_FACMASK)
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
-
- if (s->identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", s->identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
- }
-
- message = strappend("MESSAGE=", p);
- if (message)
- IOVEC_SET_STRING(iovec[n++], message);
-
-#ifdef HAVE_SELINUX
- if (s->security_context) {
- label = (char*) s->security_context;
- label_len = strlen((char*) s->security_context);
- }
-#endif
-
- dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, s->unit_id, priority);
-
- free(message);
- free(syslog_priority);
- free(syslog_facility);
- free(syslog_identifier);
-
- return 0;
-}
-
-static int stdout_stream_line(StdoutStream *s, char *p) {
- int r;
-
- assert(s);
- assert(p);
-
- p = strstrip(p);
-
- switch (s->state) {
-
- case STDOUT_STREAM_IDENTIFIER:
- if (isempty(p))
- s->identifier = NULL;
- else {
- s->identifier = strdup(p);
- if (!s->identifier)
- return log_oom();
- }
-
- s->state = STDOUT_STREAM_UNIT_ID;
- return 0;
-
- case STDOUT_STREAM_UNIT_ID:
- if (s->ucred.uid == 0) {
- if (isempty(p))
- s->unit_id = NULL;
- else {
- s->unit_id = strdup(p);
- if (!s->unit_id)
- return log_oom();
- }
- }
-
- s->state = STDOUT_STREAM_PRIORITY;
- return 0;
-
- case STDOUT_STREAM_PRIORITY:
- r = safe_atoi(p, &s->priority);
- if (r < 0 || s->priority <= 0 || s->priority >= 999) {
- log_warning("Failed to parse log priority line.");
- return -EINVAL;
- }
-
- s->state = STDOUT_STREAM_LEVEL_PREFIX;
- return 0;
-
- case STDOUT_STREAM_LEVEL_PREFIX:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse level prefix line.");
- return -EINVAL;
- }
-
- s->level_prefix = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_SYSLOG;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_SYSLOG:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse forward to syslog line.");
- return -EINVAL;
- }
-
- s->forward_to_syslog = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_KMSG;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_KMSG:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse copy to kmsg line.");
- return -EINVAL;
- }
-
- s->forward_to_kmsg = !!r;
- s->state = STDOUT_STREAM_FORWARD_TO_CONSOLE;
- return 0;
-
- case STDOUT_STREAM_FORWARD_TO_CONSOLE:
- r = parse_boolean(p);
- if (r < 0) {
- log_warning("Failed to parse copy to console line.");
- return -EINVAL;
- }
-
- s->forward_to_console = !!r;
- s->state = STDOUT_STREAM_RUNNING;
- return 0;
-
- case STDOUT_STREAM_RUNNING:
- return stdout_stream_log(s, p);
- }
-
- assert_not_reached("Unknown stream state");
-}
-
-static int stdout_stream_scan(StdoutStream *s, bool force_flush) {
- char *p;
- size_t remaining;
- int r;
-
- assert(s);
-
- p = s->buffer;
- remaining = s->length;
- for (;;) {
- char *end;
- size_t skip;
-
- end = memchr(p, '\n', remaining);
- if (end)
- skip = end - p + 1;
- else if (remaining >= sizeof(s->buffer) - 1) {
- end = p + sizeof(s->buffer) - 1;
- skip = remaining;
- } else
- break;
-
- *end = 0;
-
- r = stdout_stream_line(s, p);
- if (r < 0)
- return r;
-
- remaining -= skip;
- p += skip;
- }
-
- if (force_flush && remaining > 0) {
- p[remaining] = 0;
- r = stdout_stream_line(s, p);
- if (r < 0)
- return r;
-
- p += remaining;
- remaining = 0;
- }
-
- if (p > s->buffer) {
- memmove(s->buffer, p, remaining);
- s->length = remaining;
- }
-
- return 0;
-}
-
-static int stdout_stream_process(StdoutStream *s) {
- ssize_t l;
- int r;
-
- assert(s);
-
- l = read(s->fd, s->buffer+s->length, sizeof(s->buffer)-1-s->length);
- if (l < 0) {
-
- if (errno == EAGAIN)
- return 0;
-
- log_warning("Failed to read from stream: %m");
- return -errno;
- }
-
- if (l == 0) {
- r = stdout_stream_scan(s, true);
- if (r < 0)
- return r;
-
- return 0;
- }
-
- s->length += l;
- r = stdout_stream_scan(s, false);
- if (r < 0)
- return r;
-
- return 1;
-
-}
-
-static void stdout_stream_free(StdoutStream *s) {
- assert(s);
-
- if (s->server) {
- assert(s->server->n_stdout_streams > 0);
- s->server->n_stdout_streams --;
- LIST_REMOVE(StdoutStream, stdout_stream, s->server->stdout_streams, s);
- }
-
- if (s->fd >= 0) {
- if (s->server)
- epoll_ctl(s->server->epoll_fd, EPOLL_CTL_DEL, s->fd, NULL);
-
- close_nointr_nofail(s->fd);
- }
-
-#ifdef HAVE_SELINUX
- if (s->security_context)
- freecon(s->security_context);
-#endif
-
- free(s->identifier);
- free(s);
-}
-
-static int stdout_stream_new(Server *s) {
- StdoutStream *stream;
- int fd, r;
- socklen_t len;
- struct epoll_event ev;
-
- assert(s);
-
- fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
- if (fd < 0) {
- if (errno == EAGAIN)
- return 0;
-
- log_error("Failed to accept stdout connection: %m");
- return -errno;
- }
-
- if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
- log_warning("Too many stdout streams, refusing connection.");
- close_nointr_nofail(fd);
- return 0;
- }
-
- stream = new0(StdoutStream, 1);
- if (!stream) {
- close_nointr_nofail(fd);
- return log_oom();
- }
-
- stream->fd = fd;
-
- len = sizeof(stream->ucred);
- if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &stream->ucred, &len) < 0) {
- log_error("Failed to determine peer credentials: %m");
- r = -errno;
- goto fail;
- }
-
-#ifdef HAVE_SELINUX
- if (getpeercon(fd, &stream->security_context) < 0 && errno != ENOPROTOOPT)
- log_error("Failed to determine peer security context: %m");
-#endif
-
- if (shutdown(fd, SHUT_WR) < 0) {
- log_error("Failed to shutdown writing side of socket: %m");
- r = -errno;
- goto fail;
- }
-
- zero(ev);
- ev.data.ptr = stream;
- ev.events = EPOLLIN;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
- log_error("Failed to add stream to event loop: %m");
- r = -errno;
- goto fail;
- }
-
- stream->server = s;
- LIST_PREPEND(StdoutStream, stdout_stream, s->stdout_streams, stream);
- s->n_stdout_streams ++;
-
- return 0;
-
-fail:
- stdout_stream_free(stream);
- return r;
-}
-
-static bool is_us(const char *pid) {
- pid_t t;
-
- assert(pid);
-
- if (parse_pid(pid, &t) < 0)
- return false;
-
- return t == getpid();
-}
-
-static void dev_kmsg_record(Server *s, char *p, size_t l) {
- struct iovec iovec[N_IOVEC_META_FIELDS + 7 + N_IOVEC_KERNEL_FIELDS];
- char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL;
- int priority, r;
- unsigned n = 0, z = 0, j;
- usec_t usec;
- char *identifier = NULL, *pid = NULL, *e, *f, *k;
- uint64_t serial;
- size_t pl;
-
- assert(s);
- assert(p);
-
- if (l <= 0)
- return;
-
- e = memchr(p, ',', l);
- if (!e)
- return;
- *e = 0;
-
- r = safe_atoi(p, &priority);
- if (r < 0 || priority < 0 || priority > 999)
- return;
-
- if (s->forward_to_kmsg && (priority & LOG_FACMASK) != LOG_KERN)
- return;
-
- l -= (e - p) + 1;
- p = e + 1;
- e = memchr(p, ',', l);
- if (!e)
- return;
- *e = 0;
-
- r = safe_atou64(p, &serial);
- if (r < 0)
- return;
-
- l -= (e - p) + 1;
- p = e + 1;
- f = memchr(p, ';', l);
- if (!f)
- return;
- /* Kernel 3.6 has the flags field, kernel 3.5 lacks that */
- e = memchr(p, ',', l);
- if (!e || f < e)
- e = f;
- *e = 0;
-
- r = parse_usec(p, &usec);
- if (r < 0)
- return;
-
- l -= (f - p) + 1;
- p = f + 1;
- e = memchr(p, '\n', l);
- if (!e)
- return;
- *e = 0;
-
- pl = e - p;
- l -= (e - p) + 1;
- k = e + 1;
-
- for (j = 0; l > 0 && j < N_IOVEC_KERNEL_FIELDS; j++) {
- char *m;
- /* Meta data fields attached */
-
- if (*k != ' ')
- break;
-
- k ++, l --;
-
- e = memchr(k, '\n', l);
- if (!e)
- return;
-
- *e = 0;
-
- m = cunescape_length_with_prefix(k, e - k, "_KERNEL_");
- if (!m)
- break;
-
- IOVEC_SET_STRING(iovec[n++], m);
- z++;
-
- l -= (e - k) + 1;
- k = e + 1;
- }
-
- if (asprintf(&source_time, "_SOURCE_MONOTONIC_TIMESTAMP=%llu",
- (unsigned long long) usec) >= 0)
- IOVEC_SET_STRING(iovec[n++], source_time);
-
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=kernel");
-
- if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_priority);
-
- if ((priority & LOG_FACMASK) == LOG_KERN)
- IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
- else {
- read_identifier((const char**) &p, &identifier, &pid);
-
- /* Avoid any messages we generated ourselves via
- * log_info() and friends. */
- if (pid && is_us(pid))
- goto finish;
-
- if (identifier) {
- syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
- if (syslog_identifier)
- IOVEC_SET_STRING(iovec[n++], syslog_identifier);
- }
-
- if (pid) {
- syslog_pid = strappend("SYSLOG_PID=", pid);
- if (syslog_pid)
- IOVEC_SET_STRING(iovec[n++], syslog_pid);
- }
-
- if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
- IOVEC_SET_STRING(iovec[n++], syslog_facility);
- }
-
- message = cunescape_length_with_prefix(p, pl, "MESSAGE=");
- if (message)
- IOVEC_SET_STRING(iovec[n++], message);
-
- dispatch_message(s, iovec, n, ELEMENTSOF(iovec), NULL, NULL, NULL, 0, NULL, priority);
-
-finish:
- for (j = 0; j < z; j++)
- free(iovec[j].iov_base);
-
- free(message);
- free(syslog_priority);
- free(syslog_identifier);
- free(syslog_pid);
- free(syslog_facility);
- free(source_time);
- free(identifier);
- free(pid);
-}
-
-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->system_metrics, NULL, &s->system_journal);
- free(fn);
-
- if (r >= 0) {
- s->system_journal->compress = s->compress;
-
- 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->runtime_metrics, NULL, &s->runtime_journal);
- free(fn);
-
- if (r < 0) {
- if (r != -ENOENT)
- log_warning("Failed to open runtime journal: %s", strerror(-r));
-
- r = 0;
- }
-
- } else {
-
- /* OK, we really need the runtime journal, so create
- * it if necessary. */
-
- (void) mkdir_parents(fn, 0755);
- r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, &s->runtime_metrics, NULL, &s->runtime_journal);
- free(fn);
-
- if (r < 0) {
- log_error("Failed to open runtime journal: %s", strerror(-r));
- return r;
- }
- }
-
- if (s->runtime_journal) {
- s->runtime_journal->compress = s->compress;
-
- 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_info("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;
- }
-
- r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
- if (r == -E2BIG) {
- log_info("Allocation limit reached.");
-
- 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);
- }
-
- if (r < 0) {
- log_error("Can't write entry: %s", strerror(-r));
- goto finish;
- }
- }
-
-finish:
- journal_file_post_change(s->system_journal);
-
- journal_file_close(s->runtime_journal);
- s->runtime_journal = NULL;
-
- if (r >= 0)
- rm_rf("/run/log/journal", false, true, false);
-
- return r;
-}
-
-static int server_read_dev_kmsg(Server *s) {
- char buffer[8192+1]; /* the kernel-side limit per record is 8K currently */
- ssize_t l;
-
- assert(s);
- assert(s->dev_kmsg_fd >= 0);
-
- l = read(s->dev_kmsg_fd, buffer, sizeof(buffer) - 1);
- if (l == 0)
- return 0;
- if (l < 0) {
- /* Old kernels who don't allow reading from /dev/kmsg
- * return EINVAL when we try. So handle this cleanly,
- * but don' try to ever read from it again. */
- if (errno == EINVAL) {
- epoll_ctl(s->epoll_fd, EPOLL_CTL_DEL, s->dev_kmsg_fd, NULL);
- return 0;
- }
-
- if (errno == EAGAIN || errno == EINTR)
- return 0;
-
- log_error("Failed to read from kernel: %m");
- return -errno;
- }
-
- dev_kmsg_record(s, buffer, l);
- return 1;
-}
-
-static int server_flush_dev_kmsg(Server *s) {
- int r;
-
- assert(s);
-
- if (s->dev_kmsg_fd < 0)
- return 0;
-
- if (!s->dev_kmsg_readable)
- return 0;
-
- log_info("Flushing /dev/kmsg...");
-
- for (;;) {
- r = server_read_dev_kmsg(s);
- if (r < 0)
- return r;
-
- if (r == 0)
- break;
- }
-
- return 0;
-}
-
-static int process_event(Server *s, struct epoll_event *ev) {
- assert(s);
- assert(ev);
-
- if (ev->data.fd == s->signal_fd) {
- struct signalfd_siginfo sfsi;
- ssize_t n;
-
- if (ev->events != EPOLLIN) {
- log_info("Got invalid event from epoll.");
- return -EIO;
- }
-
- n = read(s->signal_fd, &sfsi, sizeof(sfsi));
- if (n != sizeof(sfsi)) {
-
- if (n >= 0)
- return -EIO;
-
- if (errno == EINTR || errno == EAGAIN)
- return 1;
-
- return -errno;
- }
-
- 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_info("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_info("Got invalid event from epoll.");
- return -EIO;
- }
+ if (ev->events != EPOLLIN) {
+ log_error("Got invalid event from epoll.");
+ return -EIO;
+ }
for (;;) {
struct msghdr msghdr;
else
s->buffer[n] = 0;
- process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
+ 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)
- process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
+ server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
else if (n == 0 && n_fds == 1)
- process_native_file(s, fds[0], ucred, tv, label, label_len);
+ 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.");
}
} else if (ev->data.fd == s->stdout_fd) {
if (ev->events != EPOLLIN) {
- log_info("Got invalid event from epoll.");
+ log_error("Got invalid event from epoll.");
return -EIO;
}
StdoutStream *stream;
if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
- log_info("Got invalid event from epoll.");
+ log_error("Got invalid event from epoll.");
return -EIO;
}
return 0;
}
-static int open_syslog_socket(Server *s) {
- union sockaddr_union sa;
- int one, r;
- struct epoll_event ev;
-
- assert(s);
-
- if (s->syslog_fd < 0) {
-
- s->syslog_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 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, "/dev/log", 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);
- } else
- fd_nonblock(s->syslog_fd, 1);
-
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_PASSCRED failed: %m");
- return -errno;
- }
-
-#ifdef HAVE_SELINUX
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
- if (r < 0)
- log_warning("SO_PASSSEC failed: %m");
-#endif
-
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_TIMESTAMP failed: %m");
- return -errno;
- }
-
- 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;
- }
-
- return 0;
-}
-
-static int open_native_socket(Server*s) {
- union sockaddr_union sa;
- int one, r;
- struct epoll_event ev;
-
- assert(s);
-
- if (s->native_fd < 0) {
-
- s->native_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
- if (s->native_fd < 0) {
- log_error("socket() failed: %m");
- return -errno;
- }
-
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/journal/socket", sizeof(sa.un.sun_path));
-
- unlink(sa.un.sun_path);
-
- 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;
- }
-
- chmod(sa.un.sun_path, 0666);
- } else
- fd_nonblock(s->native_fd, 1);
-
- 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;
- }
-
-#ifdef HAVE_SELINUX
- one = 1;
- r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
- if (r < 0)
- log_warning("SO_PASSSEC failed: %m");
-#endif
-
- one = 1;
- r = setsockopt(s->native_fd, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one));
- if (r < 0) {
- log_error("SO_TIMESTAMP failed: %m");
- return -errno;
- }
-
- 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;
- }
-
- return 0;
-}
-
-static int open_stdout_socket(Server *s) {
- union sockaddr_union sa;
- int r;
- struct epoll_event ev;
-
- assert(s);
-
- if (s->stdout_fd < 0) {
-
- s->stdout_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
- if (s->stdout_fd < 0) {
- log_error("socket() failed: %m");
- return -errno;
- }
-
- zero(sa);
- sa.un.sun_family = AF_UNIX;
- strncpy(sa.un.sun_path, "/run/systemd/journal/stdout", sizeof(sa.un.sun_path));
-
- unlink(sa.un.sun_path);
-
- r = bind(s->stdout_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);
-
- if (listen(s->stdout_fd, SOMAXCONN) < 0) {
- log_error("liste() failed: %m");
- return -errno;
- }
- } else
- fd_nonblock(s->stdout_fd, 1);
-
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.fd = s->stdout_fd;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->stdout_fd, &ev) < 0) {
- log_error("Failed to add stdout server fd to epoll object: %m");
- return -errno;
- }
-
- return 0;
-}
-
-static int open_dev_kmsg(Server *s) {
- struct epoll_event ev;
-
- assert(s);
-
- s->dev_kmsg_fd = open("/dev/kmsg", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
- if (s->dev_kmsg_fd < 0) {
- log_warning("Failed to open /dev/kmsg, ignoring: %m");
- return 0;
- }
-
- zero(ev);
- ev.events = EPOLLIN;
- ev.data.fd = s->dev_kmsg_fd;
- if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->dev_kmsg_fd, &ev) < 0) {
-
- /* This will fail with EPERM on older kernels where
- * /dev/kmsg is not readable. */
- if (errno == EPERM)
- return 0;
-
- log_error("Failed to add /dev/kmsg fd to epoll object: %m");
- return -errno;
- }
-
- s->dev_kmsg_readable = true;
-
- return 0;
-}
-
static int open_signalfd(Server *s) {
sigset_t mask;
struct epoll_event ev;
zero(*s);
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;
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) {
log_error("Failed to create epoll object: %m");
}
}
- r = open_syslog_socket(s);
+ r = server_open_syslog_socket(s);
+ if (r < 0)
+ return r;
+
+ 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;
- r = open_stdout_socket(s);
+ r = server_open_dev_kmsg(s);
if (r < 0)
return r;
- r = open_dev_kmsg(s);
+ r = server_open_kernel_seqnum(s);
if (r < 0)
return r;
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;
return 0;
}
+static void server_maybe_append_tags(Server *s) {
+#ifdef HAVE_GCRYPT
+ JournalFile *f;
+ Iterator i;
+ usec_t n;
+
+ n = now(CLOCK_REALTIME);
+
+ if (s->system_journal)
+ journal_file_maybe_append_tag(s->system_journal, n);
+
+ 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);
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[]) {
server_flush_dev_kmsg(&server);
log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
- driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
+ server_driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
sd_notify(false,
"READY=1\n"
for (;;) {
struct epoll_event event;
+ int t;
- r = epoll_wait(server.epoll_fd, &event, 1, -1);
+#ifdef HAVE_GCRYPT
+ usec_t u;
+
+ if (server.system_journal &&
+ journal_file_next_evolve_usec(server.system_journal, &u)) {
+ usec_t n;
+
+ 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());
- driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
+ server_driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
finish:
sd_notify(false,
~ianmdlvl / elogind.git / blobdiff