2944 lines
91 KiB
C
2944 lines
91 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/epoll.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <sys/signalfd.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <sys/ioctl.h>
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#include <linux/sockios.h>
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#include <sys/statvfs.h>
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#include <systemd/sd-journal.h>
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#include <systemd/sd-messages.h>
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#include <systemd/sd-daemon.h>
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#ifdef HAVE_LOGIND
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#include <systemd/sd-login.h>
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#endif
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#include "mkdir.h"
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#include "hashmap.h"
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#include "journal-file.h"
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#include "socket-util.h"
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#include "cgroup-util.h"
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#include "list.h"
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#include "journal-rate-limit.h"
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#include "journal-internal.h"
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#include "conf-parser.h"
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#include "journald.h"
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#include "virt.h"
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#include "missing.h"
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#ifdef HAVE_ACL
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#include <sys/acl.h>
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#include <acl/libacl.h>
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#include "acl-util.h"
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#endif
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#ifdef HAVE_SELINUX
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#include <selinux/selinux.h>
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#endif
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#define USER_JOURNALS_MAX 1024
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#define STDOUT_STREAMS_MAX 4096
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#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
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#define DEFAULT_RATE_LIMIT_BURST 200
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#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
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#define N_IOVEC_META_FIELDS 17
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#define ENTRY_SIZE_MAX (1024*1024*32)
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typedef enum StdoutStreamState {
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STDOUT_STREAM_IDENTIFIER,
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STDOUT_STREAM_UNIT_ID,
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STDOUT_STREAM_PRIORITY,
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STDOUT_STREAM_LEVEL_PREFIX,
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STDOUT_STREAM_FORWARD_TO_SYSLOG,
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STDOUT_STREAM_FORWARD_TO_KMSG,
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STDOUT_STREAM_FORWARD_TO_CONSOLE,
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STDOUT_STREAM_RUNNING
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} StdoutStreamState;
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struct StdoutStream {
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Server *server;
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StdoutStreamState state;
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int fd;
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struct ucred ucred;
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#ifdef HAVE_SELINUX
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security_context_t security_context;
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#endif
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char *identifier;
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char *unit_id;
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int priority;
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bool level_prefix:1;
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bool forward_to_syslog:1;
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bool forward_to_kmsg:1;
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bool forward_to_console:1;
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char buffer[LINE_MAX+1];
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size_t length;
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LIST_FIELDS(StdoutStream, stdout_stream);
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};
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static const char* const storage_table[] = {
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[STORAGE_AUTO] = "auto",
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[STORAGE_VOLATILE] = "volatile",
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[STORAGE_PERSISTENT] = "persistent",
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[STORAGE_NONE] = "none"
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};
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DEFINE_STRING_TABLE_LOOKUP(storage, Storage);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
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static uint64_t available_space(Server *s) {
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char ids[33], *p;
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const char *f;
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sd_id128_t machine;
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struct statvfs ss;
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uint64_t sum = 0, avail = 0, ss_avail = 0;
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int r;
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DIR *d;
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usec_t ts;
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JournalMetrics *m;
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ts = now(CLOCK_MONOTONIC);
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if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts)
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return s->cached_available_space;
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r = sd_id128_get_machine(&machine);
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if (r < 0)
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return 0;
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if (s->system_journal) {
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f = "/var/log/journal/";
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m = &s->system_metrics;
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} else {
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f = "/run/log/journal/";
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m = &s->runtime_metrics;
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}
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assert(m);
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p = strappend(f, sd_id128_to_string(machine, ids));
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if (!p)
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return 0;
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d = opendir(p);
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free(p);
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if (!d)
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return 0;
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if (fstatvfs(dirfd(d), &ss) < 0)
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goto finish;
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for (;;) {
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struct stat st;
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struct dirent buf, *de;
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r = readdir_r(d, &buf, &de);
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if (r != 0)
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break;
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if (!de)
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break;
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if (!endswith(de->d_name, ".journal") &&
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!endswith(de->d_name, ".journal~"))
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continue;
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if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
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continue;
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if (!S_ISREG(st.st_mode))
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continue;
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sum += (uint64_t) st.st_blocks * 512UL;
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}
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avail = sum >= m->max_use ? 0 : m->max_use - sum;
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ss_avail = ss.f_bsize * ss.f_bavail;
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ss_avail = ss_avail < m->keep_free ? 0 : ss_avail - m->keep_free;
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if (ss_avail < avail)
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avail = ss_avail;
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s->cached_available_space = avail;
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s->cached_available_space_timestamp = ts;
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finish:
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closedir(d);
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return avail;
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}
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static void server_read_file_gid(Server *s) {
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const char *adm = "adm";
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int r;
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assert(s);
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if (s->file_gid_valid)
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return;
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r = get_group_creds(&adm, &s->file_gid);
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if (r < 0)
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log_warning("Failed to resolve 'adm' group: %s", strerror(-r));
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/* if we couldn't read the gid, then it will be 0, but that's
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* fine and we shouldn't try to resolve the group again, so
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* let's just pretend it worked right-away. */
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s->file_gid_valid = true;
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}
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static void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
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int r;
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#ifdef HAVE_ACL
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acl_t acl;
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acl_entry_t entry;
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acl_permset_t permset;
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#endif
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assert(f);
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server_read_file_gid(s);
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r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
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if (r < 0)
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log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
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#ifdef HAVE_ACL
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if (uid <= 0)
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return;
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acl = acl_get_fd(f->fd);
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if (!acl) {
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log_warning("Failed to read ACL on %s, ignoring: %m", f->path);
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return;
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}
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r = acl_find_uid(acl, uid, &entry);
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if (r <= 0) {
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if (acl_create_entry(&acl, &entry) < 0 ||
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acl_set_tag_type(entry, ACL_USER) < 0 ||
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acl_set_qualifier(entry, &uid) < 0) {
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log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
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goto finish;
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}
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}
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if (acl_get_permset(entry, &permset) < 0 ||
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acl_add_perm(permset, ACL_READ) < 0 ||
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acl_calc_mask(&acl) < 0) {
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log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
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goto finish;
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}
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if (acl_set_fd(f->fd, acl) < 0)
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log_warning("Failed to set ACL on %s, ignoring: %m", f->path);
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finish:
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acl_free(acl);
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#endif
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}
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static JournalFile* find_journal(Server *s, uid_t uid) {
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char *p;
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int r;
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JournalFile *f;
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char ids[33];
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sd_id128_t machine;
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assert(s);
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/* We split up user logs only on /var, not on /run. If the
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* runtime file is open, we write to it exclusively, in order
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* to guarantee proper order as soon as we flush /run to
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* /var and close the runtime file. */
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if (s->runtime_journal)
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return s->runtime_journal;
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if (uid <= 0)
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return s->system_journal;
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r = sd_id128_get_machine(&machine);
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if (r < 0)
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return s->system_journal;
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f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
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if (f)
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return f;
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if (asprintf(&p, "/var/log/journal/%s/user-%lu.journal", sd_id128_to_string(machine, ids), (unsigned long) uid) < 0)
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return s->system_journal;
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while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
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/* Too many open? Then let's close one */
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f = hashmap_steal_first(s->user_journals);
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assert(f);
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journal_file_close(f);
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}
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r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, &s->system_metrics, s->system_journal, &f);
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free(p);
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if (r < 0)
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return s->system_journal;
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server_fix_perms(s, f, uid);
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r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
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if (r < 0) {
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journal_file_close(f);
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return s->system_journal;
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}
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return f;
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}
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static void server_rotate(Server *s) {
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JournalFile *f;
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void *k;
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Iterator i;
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int r;
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log_info("Rotating...");
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if (s->runtime_journal) {
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r = journal_file_rotate(&s->runtime_journal);
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if (r < 0)
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if (s->runtime_journal)
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log_error("Failed to rotate %s: %s", s->runtime_journal->path, strerror(-r));
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else
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log_error("Failed to create new runtime journal: %s", strerror(-r));
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else
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server_fix_perms(s, s->runtime_journal, 0);
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}
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if (s->system_journal) {
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r = journal_file_rotate(&s->system_journal);
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if (r < 0)
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if (s->system_journal)
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log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
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else
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log_error("Failed to create new system journal: %s", strerror(-r));
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else
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server_fix_perms(s, s->system_journal, 0);
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}
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HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
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r = journal_file_rotate(&f);
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if (r < 0)
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if (f->path)
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log_error("Failed to rotate %s: %s", f->path, strerror(-r));
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else
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log_error("Failed to create user journal: %s", strerror(-r));
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else {
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hashmap_replace(s->user_journals, k, f);
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server_fix_perms(s, s->system_journal, PTR_TO_UINT32(k));
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}
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}
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}
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static void server_vacuum(Server *s) {
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char *p;
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char ids[33];
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sd_id128_t machine;
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int r;
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log_info("Vacuuming...");
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r = sd_id128_get_machine(&machine);
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if (r < 0) {
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log_error("Failed to get machine ID: %s", strerror(-r));
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return;
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}
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sd_id128_to_string(machine, ids);
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if (s->system_journal) {
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if (asprintf(&p, "/var/log/journal/%s", ids) < 0) {
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log_oom();
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return;
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}
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r = journal_directory_vacuum(p, s->system_metrics.max_use, s->system_metrics.keep_free);
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if (r < 0 && r != -ENOENT)
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log_error("Failed to vacuum %s: %s", p, strerror(-r));
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free(p);
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}
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if (s->runtime_journal) {
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if (asprintf(&p, "/run/log/journal/%s", ids) < 0) {
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log_oom();
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return;
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}
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r = journal_directory_vacuum(p, s->runtime_metrics.max_use, s->runtime_metrics.keep_free);
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if (r < 0 && r != -ENOENT)
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log_error("Failed to vacuum %s: %s", p, strerror(-r));
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free(p);
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}
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s->cached_available_space_timestamp = 0;
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}
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static char *shortened_cgroup_path(pid_t pid) {
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int r;
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char *process_path, *init_path, *path;
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assert(pid > 0);
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r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &process_path);
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if (r < 0)
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return NULL;
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r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &init_path);
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if (r < 0) {
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free(process_path);
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return NULL;
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}
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if (endswith(init_path, "/system"))
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init_path[strlen(init_path) - 7] = 0;
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else if (streq(init_path, "/"))
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init_path[0] = 0;
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|
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if (startswith(process_path, init_path)) {
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char *p;
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p = strdup(process_path + strlen(init_path));
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if (!p) {
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free(process_path);
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free(init_path);
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return NULL;
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}
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path = p;
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} else {
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path = process_path;
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process_path = NULL;
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}
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|
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free(process_path);
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free(init_path);
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return path;
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}
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static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n) {
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JournalFile *f;
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bool vacuumed = false;
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int r;
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assert(s);
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assert(iovec);
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assert(n > 0);
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|
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f = find_journal(s, uid);
|
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if (!f)
|
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return;
|
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|
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if (journal_file_rotate_suggested(f)) {
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log_info("Journal header limits reached or header out-of-date, rotating.");
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server_rotate(s);
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server_vacuum(s);
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vacuumed = true;
|
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|
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f = find_journal(s, uid);
|
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if (!f)
|
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return;
|
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}
|
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|
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for (;;) {
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r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
|
|
if (r >= 0)
|
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return;
|
|
|
|
if (vacuumed ||
|
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(r != -E2BIG && /* hit limit */
|
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r != -EFBIG && /* hit fs limit */
|
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r != -EDQUOT && /* quota hit */
|
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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_info("Allocation limit reached, rotating.");
|
|
else if (r == -EHOSTDOWN)
|
|
log_info("Journal file from other machine, rotating.");
|
|
else if (r == -EBUSY)
|
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log_info("Unlcean shutdown, rotating.");
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else
|
|
log_warning("Journal file corrupted, rotating.");
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|
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server_rotate(s);
|
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server_vacuum(s);
|
|
vacuumed = true;
|
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|
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f = find_journal(s, uid);
|
|
if (!f)
|
|
return;
|
|
|
|
log_info("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, *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;
|
|
|
|
assert(s);
|
|
assert(iovec);
|
|
assert(n > 0);
|
|
assert(n + N_IOVEC_META_FIELDS <= m);
|
|
|
|
if (ucred) {
|
|
uint32_t audit;
|
|
#ifdef HAVE_LOGIND
|
|
uid_t owner;
|
|
#endif
|
|
|
|
realuid = ucred->uid;
|
|
|
|
if (asprintf(&pid, "_PID=%lu", (unsigned long) ucred->pid) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], pid);
|
|
|
|
if (asprintf(&uid, "_UID=%lu", (unsigned long) ucred->uid) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], uid);
|
|
|
|
if (asprintf(&gid, "_GID=%lu", (unsigned long) ucred->gid) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], gid);
|
|
|
|
r = get_process_comm(ucred->pid, &t);
|
|
if (r >= 0) {
|
|
comm = strappend("_COMM=", t);
|
|
free(t);
|
|
|
|
if (comm)
|
|
IOVEC_SET_STRING(iovec[n++], comm);
|
|
}
|
|
|
|
r = get_process_exe(ucred->pid, &t);
|
|
if (r >= 0) {
|
|
exe = strappend("_EXE=", t);
|
|
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);
|
|
}
|
|
|
|
r = audit_session_from_pid(ucred->pid, &audit);
|
|
if (r >= 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 (r >= 0)
|
|
if (asprintf(&audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], audit_loginuid);
|
|
|
|
t = shortened_cgroup_path(ucred->pid);
|
|
if (t) {
|
|
cgroup = strappend("_SYSTEMD_CGROUP=", t);
|
|
free(t);
|
|
|
|
if (cgroup)
|
|
IOVEC_SET_STRING(iovec[n++], cgroup);
|
|
}
|
|
|
|
#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) {
|
|
if (asprintf(&source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu",
|
|
(unsigned long long) timeval_load(tv)) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], source_time);
|
|
}
|
|
|
|
/* Note that strictly speaking storing the boot id here is
|
|
* redundant since the entry includes this in-line
|
|
* anyway. However, we need this indexed, too. */
|
|
r = sd_id128_get_boot(&id);
|
|
if (r >= 0)
|
|
if (asprintf(&boot_id, "_BOOT_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], boot_id);
|
|
|
|
r = sd_id128_get_machine(&id);
|
|
if (r >= 0)
|
|
if (asprintf(&machine_id, "_MACHINE_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
|
|
IOVEC_SET_STRING(iovec[n++], machine_id);
|
|
|
|
t = gethostname_malloc();
|
|
if (t) {
|
|
hostname = strappend("_HOSTNAME=", t);
|
|
free(t);
|
|
if (hostname)
|
|
IOVEC_SET_STRING(iovec[n++], hostname);
|
|
}
|
|
|
|
assert(n <= m);
|
|
|
|
write_to_journal(s, realuid == 0 ? 0 : loginuid, iovec, n);
|
|
|
|
free(pid);
|
|
free(uid);
|
|
free(gid);
|
|
free(comm);
|
|
free(exe);
|
|
free(cmdline);
|
|
free(source_time);
|
|
free(boot_id);
|
|
free(machine_id);
|
|
free(hostname);
|
|
free(audit_session);
|
|
free(audit_loginuid);
|
|
free(cgroup);
|
|
free(session);
|
|
free(owner_uid);
|
|
free(unit);
|
|
free(selinux_context);
|
|
}
|
|
|
|
static void 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(format);
|
|
|
|
IOVEC_SET_STRING(iovec[n++], "PRIORITY=5");
|
|
IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
|
|
|
|
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);
|
|
|
|
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);
|
|
|
|
zero(ucred);
|
|
ucred.pid = getpid();
|
|
ucred.uid = getuid();
|
|
ucred.gid = getgid();
|
|
|
|
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) {
|
|
int rl;
|
|
char *path = NULL, *c;
|
|
|
|
assert(s);
|
|
assert(iovec || n == 0);
|
|
|
|
if (n == 0)
|
|
return;
|
|
|
|
if (LOG_PRI(priority) > s->max_level_store)
|
|
return;
|
|
|
|
if (!ucred)
|
|
goto finish;
|
|
|
|
path = shortened_cgroup_path(ucred->pid);
|
|
if (!path)
|
|
goto finish;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available_space(s));
|
|
|
|
if (rl == 0) {
|
|
free(path);
|
|
return;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
free(path);
|
|
|
|
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;
|
|
int fd;
|
|
|
|
assert(s);
|
|
assert(priority >= 0);
|
|
assert(priority <= 999);
|
|
assert(message);
|
|
|
|
if (LOG_PRI(priority) > s->max_level_kmsg)
|
|
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");
|
|
|
|
fd = open("/dev/kmsg", O_WRONLY|O_NOCTTY|O_CLOEXEC);
|
|
if (fd < 0) {
|
|
log_debug("Failed to open /dev/kmsg for logging: %s", strerror(errno));
|
|
goto finish;
|
|
}
|
|
|
|
if (writev(fd, iovec, n) < 0)
|
|
log_debug("Failed to write to /dev/kmsg for logging: %s", strerror(errno));
|
|
|
|
close_nointr_nofail(fd);
|
|
|
|
finish:
|
|
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;
|
|
|
|
assert(s);
|
|
assert(message);
|
|
|
|
if (LOG_PRI(priority) > s->max_level_console)
|
|
return;
|
|
|
|
/* First: 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++], ": ");
|
|
}
|
|
|
|
/* Third: message */
|
|
IOVEC_SET_STRING(iovec[n++], message);
|
|
IOVEC_SET_STRING(iovec[n++], "\n");
|
|
|
|
tty = s->tty_path ? s->tty_path : "/dev/console";
|
|
|
|
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 (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;
|
|
|
|
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);
|
|
}
|
|
|
|
static bool valid_user_field(const char *p, size_t l) {
|
|
const char *a;
|
|
|
|
/* We kinda enforce POSIX syntax recommendations for
|
|
environment variables here, but make a couple of additional
|
|
requirements.
|
|
|
|
http://pubs.opengroup.org/onlinepubs/000095399/basedefs/xbd_chap08.html */
|
|
|
|
/* No empty field names */
|
|
if (l <= 0)
|
|
return false;
|
|
|
|
/* Don't allow names longer than 64 chars */
|
|
if (l > 64)
|
|
return false;
|
|
|
|
/* Variables starting with an underscore are protected */
|
|
if (p[0] == '_')
|
|
return false;
|
|
|
|
/* 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 int parse_kernel_timestamp(char **_p, usec_t *t) {
|
|
usec_t r;
|
|
int k, i;
|
|
char *p;
|
|
|
|
assert(_p);
|
|
assert(*_p);
|
|
assert(t);
|
|
|
|
p = *_p;
|
|
|
|
if (strlen(p) < 14 || p[0] != '[' || p[13] != ']' || p[6] != '.')
|
|
return 0;
|
|
|
|
r = 0;
|
|
|
|
for (i = 1; i <= 5; i++) {
|
|
r *= 10;
|
|
|
|
if (p[i] == ' ')
|
|
continue;
|
|
|
|
k = undecchar(p[i]);
|
|
if (k < 0)
|
|
return 0;
|
|
|
|
r += k;
|
|
}
|
|
|
|
for (i = 7; i <= 12; i++) {
|
|
r *= 10;
|
|
|
|
k = undecchar(p[i]);
|
|
if (k < 0)
|
|
return 0;
|
|
|
|
r += k;
|
|
}
|
|
|
|
*t = r;
|
|
*_p += 14;
|
|
*_p += strspn(*_p, WHITESPACE);
|
|
|
|
return 1;
|
|
}
|
|
|
|
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 proc_kmsg_line(Server *s, const char *p) {
|
|
struct iovec iovec[N_IOVEC_META_FIELDS + 7];
|
|
char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL;
|
|
int priority = LOG_KERN | LOG_INFO;
|
|
unsigned n = 0;
|
|
usec_t usec;
|
|
char *identifier = NULL, *pid = NULL;
|
|
|
|
assert(s);
|
|
assert(p);
|
|
|
|
if (isempty(p))
|
|
return;
|
|
|
|
parse_syslog_priority((char **) &p, &priority);
|
|
|
|
if (s->forward_to_kmsg && (priority & LOG_FACMASK) != LOG_KERN)
|
|
return;
|
|
|
|
if (parse_kernel_timestamp((char **) &p, &usec) > 0) {
|
|
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) {
|
|
|
|
if (s->forward_to_syslog)
|
|
forward_syslog(s, priority, "kernel", p, NULL, NULL);
|
|
|
|
IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
|
|
} else {
|
|
read_identifier(&p, &identifier, &pid);
|
|
|
|
/* Avoid any messages we generated ourselves via
|
|
* log_info() and friends. */
|
|
if (pid && is_us(pid))
|
|
goto finish;
|
|
|
|
if (s->forward_to_syslog)
|
|
forward_syslog(s, priority, identifier, p, NULL, NULL);
|
|
|
|
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 = strappend("MESSAGE=", p);
|
|
if (message)
|
|
IOVEC_SET_STRING(iovec[n++], message);
|
|
|
|
dispatch_message(s, iovec, n, ELEMENTSOF(iovec), NULL, NULL, NULL, 0, NULL, priority);
|
|
|
|
finish:
|
|
free(message);
|
|
free(syslog_priority);
|
|
free(syslog_identifier);
|
|
free(syslog_pid);
|
|
free(syslog_facility);
|
|
free(source_time);
|
|
free(identifier);
|
|
free(pid);
|
|
}
|
|
|
|
static void proc_kmsg_scan(Server *s) {
|
|
char *p;
|
|
size_t remaining;
|
|
|
|
assert(s);
|
|
|
|
p = s->proc_kmsg_buffer;
|
|
remaining = s->proc_kmsg_length;
|
|
for (;;) {
|
|
char *end;
|
|
size_t skip;
|
|
|
|
end = memchr(p, '\n', remaining);
|
|
if (end)
|
|
skip = end - p + 1;
|
|
else if (remaining >= sizeof(s->proc_kmsg_buffer) - 1) {
|
|
end = p + sizeof(s->proc_kmsg_buffer) - 1;
|
|
skip = remaining;
|
|
} else
|
|
break;
|
|
|
|
*end = 0;
|
|
|
|
proc_kmsg_line(s, p);
|
|
|
|
remaining -= skip;
|
|
p += skip;
|
|
}
|
|
|
|
if (p > s->proc_kmsg_buffer) {
|
|
memmove(s->proc_kmsg_buffer, p, remaining);
|
|
s->proc_kmsg_length = remaining;
|
|
}
|
|
}
|
|
|
|
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_proc_kmsg(Server *s) {
|
|
ssize_t l;
|
|
assert(s);
|
|
assert(s->proc_kmsg_fd >= 0);
|
|
|
|
l = read(s->proc_kmsg_fd, s->proc_kmsg_buffer + s->proc_kmsg_length, sizeof(s->proc_kmsg_buffer) - 1 - s->proc_kmsg_length);
|
|
if (l == 0) /* the kernel is stupid and in some race
|
|
* conditions returns 0 in the middle of the
|
|
* stream. */
|
|
return 0;
|
|
if (l < 0) {
|
|
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
return 0;
|
|
|
|
log_error("Failed to read from kernel: %m");
|
|
return -errno;
|
|
}
|
|
|
|
s->proc_kmsg_length += l;
|
|
|
|
proc_kmsg_scan(s);
|
|
return 1;
|
|
}
|
|
|
|
static int server_flush_proc_kmsg(Server *s) {
|
|
int r;
|
|
|
|
assert(s);
|
|
|
|
if (s->proc_kmsg_fd < 0)
|
|
return 0;
|
|
|
|
log_info("Flushing /proc/kmsg...");
|
|
|
|
for (;;) {
|
|
r = server_read_proc_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->proc_kmsg_fd) {
|
|
int r;
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
log_info("Got invalid event from epoll.");
|
|
return -EIO;
|
|
}
|
|
|
|
r = server_read_proc_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;
|
|
}
|
|
|
|
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(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 (s->buffer_size < (size_t) v) {
|
|
void *b;
|
|
size_t l;
|
|
|
|
l = MAX(LINE_MAX + (size_t) v, s->buffer_size * 2);
|
|
b = realloc(s->buffer, l+1);
|
|
|
|
if (!b) {
|
|
log_error("Couldn't increase buffer.");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
s->buffer_size = l;
|
|
s->buffer = b;
|
|
}
|
|
|
|
zero(iovec);
|
|
iovec.iov_base = s->buffer;
|
|
iovec.iov_len = s->buffer_size;
|
|
|
|
zero(control);
|
|
zero(msghdr);
|
|
msghdr.msg_iov = &iovec;
|
|
msghdr.msg_iovlen = 1;
|
|
msghdr.msg_control = &control;
|
|
msghdr.msg_controllen = sizeof(control);
|
|
|
|
n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
|
|
if (n < 0) {
|
|
|
|
if (errno == EINTR || errno == EAGAIN)
|
|
return 1;
|
|
|
|
log_error("recvmsg() failed: %m");
|
|
return -errno;
|
|
}
|
|
|
|
for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
|
|
|
|
if (cmsg->cmsg_level == SOL_SOCKET &&
|
|
cmsg->cmsg_type == SCM_CREDENTIALS &&
|
|
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;
|
|
|
|
if (n > 0 && n_fds == 0) {
|
|
e = memchr(s->buffer, '\n', n);
|
|
if (e)
|
|
*e = 0;
|
|
else
|
|
s->buffer[n] = 0;
|
|
|
|
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);
|
|
else if (n == 0 && n_fds == 1)
|
|
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.");
|
|
}
|
|
|
|
close_many(fds, n_fds);
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (ev->data.fd == s->stdout_fd) {
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
log_info("Got invalid event from epoll.");
|
|
return -EIO;
|
|
}
|
|
|
|
stdout_stream_new(s);
|
|
return 1;
|
|
|
|
} else {
|
|
StdoutStream *stream;
|
|
|
|
if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
|
|
log_info("Got invalid event from epoll.");
|
|
return -EIO;
|
|
}
|
|
|
|
/* 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 */
|
|
|
|
stream = ev->data.ptr;
|
|
|
|
if (stdout_stream_process(stream) <= 0)
|
|
stdout_stream_free(stream);
|
|
|
|
return 1;
|
|
}
|
|
|
|
log_error("Unknown event.");
|
|
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_proc_kmsg(Server *s) {
|
|
struct epoll_event ev;
|
|
|
|
assert(s);
|
|
|
|
if (!s->import_proc_kmsg)
|
|
return 0;
|
|
|
|
s->proc_kmsg_fd = open("/proc/kmsg", O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
|
|
if (s->proc_kmsg_fd < 0) {
|
|
log_warning("Failed to open /proc/kmsg, ignoring: %m");
|
|
return 0;
|
|
}
|
|
|
|
zero(ev);
|
|
ev.events = EPOLLIN;
|
|
ev.data.fd = s->proc_kmsg_fd;
|
|
if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->proc_kmsg_fd, &ev) < 0) {
|
|
log_error("Failed to add /proc/kmsg fd to epoll object: %m");
|
|
return -errno;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int open_signalfd(Server *s) {
|
|
sigset_t mask;
|
|
struct epoll_event ev;
|
|
|
|
assert(s);
|
|
|
|
assert_se(sigemptyset(&mask) == 0);
|
|
sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
|
|
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
|
|
|
|
s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
|
|
if (s->signal_fd < 0) {
|
|
log_error("signalfd(): %m");
|
|
return -errno;
|
|
}
|
|
|
|
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 server_parse_proc_cmdline(Server *s) {
|
|
char *line, *w, *state;
|
|
int r;
|
|
size_t l;
|
|
|
|
if (detect_container(NULL) > 0)
|
|
return 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;
|
|
}
|
|
|
|
FOREACH_WORD_QUOTED(w, l, line, state) {
|
|
char *word;
|
|
|
|
word = strndup(w, l);
|
|
if (!word) {
|
|
r = -ENOMEM;
|
|
goto finish;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
free(line);
|
|
return r;
|
|
}
|
|
|
|
static int server_parse_config_file(Server *s) {
|
|
FILE *f;
|
|
const char *fn;
|
|
int r;
|
|
|
|
assert(s);
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
|
|
assert(s);
|
|
|
|
zero(*s);
|
|
s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->proc_kmsg_fd = -1;
|
|
s->compress = 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);
|
|
|
|
s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
|
|
if (!s->user_journals)
|
|
return log_oom();
|
|
|
|
s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
|
|
if (s->epoll_fd < 0) {
|
|
log_error("Failed to create epoll object: %m");
|
|
return -errno;
|
|
}
|
|
|
|
n = sd_listen_fds(true);
|
|
if (n < 0) {
|
|
log_error("Failed to read listening file descriptors from environment: %s", strerror(-n));
|
|
return n;
|
|
}
|
|
|
|
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
|
|
|
|
if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
|
|
|
|
if (s->native_fd >= 0) {
|
|
log_error("Too many native sockets passed.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
s->native_fd = fd;
|
|
|
|
} else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
|
|
|
|
if (s->stdout_fd >= 0) {
|
|
log_error("Too many stdout sockets passed.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
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);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = open_native_socket(s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = open_stdout_socket(s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = open_proc_kmsg(s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = open_signalfd(s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
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;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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->runtime_journal)
|
|
journal_file_close(s->runtime_journal);
|
|
|
|
while ((f = hashmap_steal_first(s->user_journals)))
|
|
journal_file_close(f);
|
|
|
|
hashmap_free(s->user_journals);
|
|
|
|
if (s->epoll_fd >= 0)
|
|
close_nointr_nofail(s->epoll_fd);
|
|
|
|
if (s->signal_fd >= 0)
|
|
close_nointr_nofail(s->signal_fd);
|
|
|
|
if (s->syslog_fd >= 0)
|
|
close_nointr_nofail(s->syslog_fd);
|
|
|
|
if (s->native_fd >= 0)
|
|
close_nointr_nofail(s->native_fd);
|
|
|
|
if (s->stdout_fd >= 0)
|
|
close_nointr_nofail(s->stdout_fd);
|
|
|
|
if (s->proc_kmsg_fd >= 0)
|
|
close_nointr_nofail(s->proc_kmsg_fd);
|
|
|
|
if (s->rate_limit)
|
|
journal_rate_limit_free(s->rate_limit);
|
|
|
|
free(s->buffer);
|
|
free(s->tty_path);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
Server server;
|
|
int r;
|
|
|
|
/* if (getppid() != 1) { */
|
|
/* log_error("This program should be invoked by init only."); */
|
|
/* return EXIT_FAILURE; */
|
|
/* } */
|
|
|
|
if (argc > 1) {
|
|
log_error("This program does not take arguments.");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
log_set_target(LOG_TARGET_SAFE);
|
|
log_set_facility(LOG_SYSLOG);
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
umask(0022);
|
|
|
|
r = server_init(&server);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
server_vacuum(&server);
|
|
server_flush_to_var(&server);
|
|
server_flush_proc_kmsg(&server);
|
|
|
|
log_debug("systemd-journald running as pid %lu", (unsigned long) getpid());
|
|
driver_message(&server, SD_MESSAGE_JOURNAL_START, "Journal started");
|
|
|
|
sd_notify(false,
|
|
"READY=1\n"
|
|
"STATUS=Processing requests...");
|
|
|
|
for (;;) {
|
|
struct epoll_event event;
|
|
|
|
r = epoll_wait(server.epoll_fd, &event, 1, -1);
|
|
if (r < 0) {
|
|
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
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;
|
|
}
|
|
|
|
log_debug("systemd-journald stopped as pid %lu", (unsigned long) getpid());
|
|
driver_message(&server, SD_MESSAGE_JOURNAL_STOP, "Journal stopped");
|
|
|
|
finish:
|
|
sd_notify(false,
|
|
"STATUS=Shutting down...");
|
|
|
|
server_done(&server);
|
|
|
|
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
|
|
}
|