X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fjournal%2Fjournald.c;h=4b0ff53125a0148bedbc5b79b2e50a3cd0f89413;hb=35e2e347d38cc2f8bd7c38a0d8a5129f5fbb0ab9;hp=8c41d9bab1e6b057b88c4cfa451c76275733139c;hpb=7560fffcd2531786b9c1ca657667a43e90331326;p=elogind.git diff --git a/src/journal/journald.c b/src/journal/journald.c index 8c41d9bab..4b0ff5312 100644 --- a/src/journal/journald.c +++ b/src/journal/journald.c @@ -31,6 +31,7 @@ #include #include +#include #include #include #include @@ -45,12 +46,16 @@ #include "socket-util.h" #include "cgroup-util.h" #include "list.h" +#include "virt.h" +#include "missing.h" +#include "conf-parser.h" #include "journal-rate-limit.h" #include "journal-internal.h" -#include "conf-parser.h" +#include "journal-vacuum.h" +#include "journal-authenticate.h" #include "journald.h" -#include "virt.h" -#include "missing.h" +#include "journald-kmsg.h" +#include "journald-syslog.h" #ifdef HAVE_ACL #include @@ -70,9 +75,6 @@ #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 { @@ -315,7 +317,7 @@ static JournalFile* find_journal(Server *s, uid_t uid) { journal_file_close(f); } - r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, false, &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) @@ -352,7 +354,7 @@ static void server_rotate(Server *s) { } if (s->system_journal) { - r = journal_file_rotate(&s->system_journal, s->compress, true); + 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)); @@ -364,7 +366,7 @@ static void server_rotate(Server *s) { } HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) { - r = journal_file_rotate(&f, s->compress, false); + 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)); @@ -712,7 +714,7 @@ static void dispatch_message_real( 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]; @@ -745,13 +747,15 @@ static void driver_message(Server *s, sd_id128_t message_id, const char *format, 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; @@ -796,7 +800,7 @@ static void dispatch_message(Server *s, /* 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); @@ -804,210 +808,7 @@ finish: 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); - - zero(msghdr); - msghdr.msg_iov = (struct iovec*) iovec; - msghdr.msg_iovlen = n_iovec; - - 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 (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; - } - - /* 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 (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0) - return; - - /* The socket is full? I guess the syslog implementation is - * too slow, and we shouldn't wait for that... */ - if (errno == EAGAIN) - return; - - if (ucred && errno == ESRCH) { - struct ucred u; - - /* Hmm, presumably the sender process vanished - * by now, so let's fix it as good as we - * can, and retry */ - - u = *ucred; - u.pid = getpid(); - memcpy(CMSG_DATA(cmsg), &u, sizeof(struct ucred)); - - if (sendmsg(s->syslog_fd, &msghdr, MSG_NOSIGNAL) >= 0) - return; - - if (errno == EAGAIN) - return; - } - - if (errno != ENOENT) - log_debug("Failed to forward syslog message: %m"); -} - -static void forward_syslog_raw(Server *s, int priority, const char *buffer, struct ucred *ucred, struct timeval *tv) { - struct iovec iovec; - - assert(s); - assert(buffer); - - if (LOG_PRI(priority) > s->max_level_syslog) - return; - - IOVEC_SET_STRING(iovec, buffer); - forward_syslog_iovec(s, &iovec, 1, ucred, tv); -} - -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; - - assert(s); - assert(priority >= 0); - assert(priority <= 999); - assert(message); - - if (LOG_PRI(priority) > s->max_level_syslog) - return; - - /* First: priority field */ - snprintf(header_priority, sizeof(header_priority), "<%i>", priority); - char_array_0(header_priority); - IOVEC_SET_STRING(iovec[n++], header_priority); - - /* 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); - - /* Third: identifier and PID */ - if (ucred) { - if (!identifier) { - get_process_comm(ucred->pid, &ident_buf); - identifier = ident_buf; - } - - 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++], ": "); - } - - /* 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; -} - -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; - - 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); - - /* First: priority field */ - snprintf(header_priority, sizeof(header_priority), "<%i>", priority); - char_array_0(header_priority); - IOVEC_SET_STRING(iovec[n++], header_priority); - - /* Second: identifier and PID */ - if (ucred) { - if (!identifier) { - get_process_comm(ucred->pid, &ident_buf); - identifier = ident_buf; - } - - 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++], ": "); - } - - /* 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) { +void server_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; @@ -1060,117 +861,7 @@ 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; - - k--; - } - } - - t = strndup(p, l); - if (t) - *identifier = t; - - *buf = p + e; - *buf += strspn(*buf, WHITESPACE); -} - -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; - - 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); - - if (s->forward_to_console) - forward_console(s, priority, identifier, buf, ucred); - - IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog"); - - 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 (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); - } - - message = strappend("MESSAGE=", buf); - if (message) - IOVEC_SET_STRING(iovec[n++], message); - - dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, NULL, priority); - - free(message); - free(identifier); - free(pid); - free(syslog_priority); - free(syslog_facility); - free(syslog_identifier); - free(syslog_pid); -} static bool valid_user_field(const char *p, size_t l) { const char *a; @@ -1240,7 +931,7 @@ static void process_native_message( if (e == p) { /* Entry separator */ - dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority); + server_dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority); n = 0; priority = LOG_INFO; @@ -1381,16 +1072,16 @@ static void process_native_message( if (message) { if (s->forward_to_syslog) - forward_syslog(s, priority, identifier, message, ucred, tv); + server_forward_syslog(s, priority, identifier, message, ucred, tv); if (s->forward_to_kmsg) - forward_kmsg(s, priority, identifier, message, ucred); + server_forward_kmsg(s, priority, identifier, message, ucred); if (s->forward_to_console) - forward_console(s, priority, identifier, message, ucred); + server_forward_console(s, priority, identifier, message, ucred); } - dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority); + server_dispatch_message(s, iovec, n, m, ucred, tv, label, label_len, NULL, priority); finish: for (j = 0; j < n; j++) { @@ -1476,16 +1167,16 @@ static int stdout_stream_log(StdoutStream *s, const char *p) { priority = s->priority; if (s->level_prefix) - parse_syslog_priority((char**) &p, &priority); + syslog_parse_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); + server_forward_syslog(s->server, syslog_fixup_facility(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); + server_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); + server_forward_console(s->server, priority, s->identifier, p, &s->ucred); IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=stdout"); @@ -1513,7 +1204,7 @@ static int stdout_stream_log(StdoutStream *s, const char *p) { } #endif - dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, s->unit_id, priority); + server_dispatch_message(s->server, iovec, n, ELEMENTSOF(iovec), &s->ucred, NULL, label, label_len, s->unit_id, priority); free(message); free(syslog_priority); @@ -1797,179 +1488,6 @@ fail: 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; - - if (s->kernel_seqnum) { - /* We already read this one? */ - if (serial < *s->kernel_seqnum) - return; - - /* Did we lose any? */ - if (serial > *s->kernel_seqnum) - driver_message(s, SD_MESSAGE_JOURNAL_MISSED, "Missed %llu kernel messages", (unsigned long long) serial - *s->kernel_seqnum - 1); - - /* Make sure we never read this one again. Note that - * we always store the next message serial we expect - * here, simply because this makes handling the first - * message with serial 0 easy. */ - *s->kernel_seqnum = serial + 1; - } - - 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; @@ -2006,7 +1524,7 @@ static int system_journal_open(Server *s) { if (!fn) return -ENOMEM; - r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, true, &s->system_metrics, NULL, &s->system_journal); + 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) @@ -2033,7 +1551,7 @@ static int system_journal_open(Server *s) { * 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, NULL, &s->runtime_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) { @@ -2049,7 +1567,7 @@ static int system_journal_open(Server *s) { * it if necessary. */ (void) mkdir_parents(fn, 0755); - r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, NULL, &s->runtime_journal); + 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 (r < 0) { @@ -2140,61 +1658,6 @@ finish: 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); @@ -2361,7 +1824,7 @@ static int process_event(Server *s, struct epoll_event *ev) { 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."); @@ -2416,68 +1879,6 @@ static int process_event(Server *s, struct epoll_event *ev) { 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; @@ -2589,71 +1990,6 @@ static int open_stdout_socket(Server *s) { 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_kernel_seqnum(Server *s) { - int fd; - uint64_t *p; - - assert(s); - - /* We store the seqnum we last read in an mmaped file. That - * way we can just use it like a variable, but it is - * persistant and automatically flushed at reboot. */ - - fd = open("/run/systemd/journal/kernel-seqnum", O_RDWR|O_CREAT|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0644); - if (fd < 0) { - log_error("Failed to open /run/systemd/journal/kernel-seqnum, ignoring: %m"); - return 0; - } - - if (posix_fallocate(fd, 0, sizeof(uint64_t)) < 0) { - log_error("Failed to allocate sequential number file, ignoring: %m"); - close_nointr_nofail(fd); - return 0; - } - - p = mmap(NULL, sizeof(uint64_t), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); - if (p == MAP_FAILED) { - log_error("Failed to map sequential number file, ignoring: %m"); - close_nointr_nofail(fd); - return 0; - } - - close_nointr_nofail(fd); - s->kernel_seqnum = p; - - return 0; -} - static int open_signalfd(Server *s) { sigset_t mask; struct epoll_event ev; @@ -2770,6 +2106,7 @@ static int server_init(Server *s) { 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; @@ -2793,6 +2130,10 @@ static int server_init(Server *s) { 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"); @@ -2840,7 +2181,7 @@ static int server_init(Server *s) { } } - r = open_syslog_socket(s); + r = server_open_syslog_socket(s); if (r < 0) return r; @@ -2852,11 +2193,11 @@ static int server_init(Server *s) { if (r < 0) return r; - r = open_dev_kmsg(s); + r = server_open_dev_kmsg(s); if (r < 0) return r; - r = open_kernel_seqnum(s); + r = server_open_kernel_seqnum(s); if (r < 0) return r; @@ -2864,6 +2205,10 @@ static int server_init(Server *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; @@ -2875,6 +2220,22 @@ static int server_init(Server *s) { return 0; } +static void 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); @@ -2919,6 +2280,12 @@ static void server_done(Server *s) { 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[]) { @@ -2937,6 +2304,7 @@ int main(int argc, char *argv[]) { log_set_target(LOG_TARGET_SAFE); log_set_facility(LOG_SYSLOG); + log_set_max_level(LOG_DEBUG); log_parse_environment(); log_open(); @@ -2951,7 +2319,7 @@ 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" @@ -2959,8 +2327,26 @@ int main(int argc, char *argv[]) { 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; + + n = now(CLOCK_REALTIME); - r = epoll_wait(server.epoll_fd, &event, 1, -1); + 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) @@ -2969,18 +2355,21 @@ int main(int argc, char *argv[]) { 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; + } + + maybe_append_tags(&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,