chiark / gitweb /
tmpfiles: add 'a' type to set ACLs
[elogind.git] / src / journal / journald-server.c
index 19cd6fe77c2a2cd94967dc21393cdc6a158c2417..87b459b3cace465ae627131b98f787b29aaac1f9 100644 (file)
 #include "journald-native.h"
 #include "journald-audit.h"
 #include "journald-server.h"
-
-#ifdef HAVE_ACL
-#include <sys/acl.h>
-#include <acl/libacl.h>
 #include "acl-util.h"
-#endif
 
 #ifdef HAVE_SELINUX
 #include <selinux/selinux.h>
@@ -204,7 +199,7 @@ void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
 
         r = fchmod(f->fd, 0640);
         if (r < 0)
-                log_warning("Failed to fix access mode on %s, ignoring: %s", f->path, strerror(-r));
+                log_warning_errno(r, "Failed to fix access mode on %s, ignoring: %m", f->path);
 
 #ifdef HAVE_ACL
         if (uid <= SYSTEM_UID_MAX)
@@ -212,7 +207,7 @@ void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
 
         acl = acl_get_fd(f->fd);
         if (!acl) {
-                log_warning("Failed to read ACL on %s, ignoring: %m", f->path);
+                log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path);
                 return;
         }
 
@@ -222,7 +217,7 @@ void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
                 if (acl_create_entry(&acl, &entry) < 0 ||
                     acl_set_tag_type(entry, ACL_USER) < 0 ||
                     acl_set_qualifier(entry, &uid) < 0) {
-                        log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
+                        log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
                         goto finish;
                 }
         }
@@ -232,12 +227,12 @@ void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
         if (acl_get_permset(entry, &permset) < 0 ||
             acl_add_perm(permset, ACL_READ) < 0 ||
             calc_acl_mask_if_needed(&acl) < 0) {
-                log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
+                log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
                 goto finish;
         }
 
         if (acl_set_fd(f->fd, acl) < 0)
-                log_warning("Failed to set ACL on %s, ignoring: %m", f->path);
+                log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path);
 
 finish:
         acl_free(acl);
@@ -297,8 +292,13 @@ static JournalFile* find_journal(Server *s, uid_t uid) {
         return f;
 }
 
-static int do_rotate(Server *s, JournalFile **f, const char* name,
-                     bool seal, uint32_t uid) {
+static int do_rotate(
+                Server *s,
+                JournalFile **f,
+                const char* name,
+                bool seal,
+                uint32_t uid) {
+
         int r;
         assert(s);
 
@@ -308,13 +308,12 @@ static int do_rotate(Server *s, JournalFile **f, const char* name,
         r = journal_file_rotate(f, s->compress, seal);
         if (r < 0)
                 if (*f)
-                        log_error("Failed to rotate %s: %s",
-                                  (*f)->path, strerror(-r));
+                        log_error_errno(r, "Failed to rotate %s: %m", (*f)->path);
                 else
-                        log_error("Failed to create new %s journal: %s",
-                                  name, strerror(-r));
+                        log_error_errno(r, "Failed to create new %s journal: %m", name);
         else
                 server_fix_perms(s, *f, uid);
+
         return r;
 }
 
@@ -348,36 +347,41 @@ void server_sync(Server *s) {
         if (s->system_journal) {
                 r = journal_file_set_offline(s->system_journal);
                 if (r < 0)
-                        log_error("Failed to sync system journal: %s", strerror(-r));
+                        log_error_errno(r, "Failed to sync system journal: %m");
         }
 
         ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
                 r = journal_file_set_offline(f);
                 if (r < 0)
-                        log_error("Failed to sync user journal: %s", strerror(-r));
+                        log_error_errno(r, "Failed to sync user journal: %m");
         }
 
         if (s->sync_event_source) {
                 r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF);
                 if (r < 0)
-                        log_error("Failed to disable sync timer source: %s", strerror(-r));
+                        log_error_errno(r, "Failed to disable sync timer source: %m");
         }
 
         s->sync_scheduled = false;
 }
 
-static void do_vacuum(Server *s, char *ids, JournalFile *f, const char* path,
-                      JournalMetrics *metrics) {
-        char *p;
+static void do_vacuum(
+                Server *s,
+                const char *id,
+                JournalFile *f,
+                const char* path,
+                JournalMetrics *metrics) {
+
+        const char *p;
         int r;
 
         if (!f)
                 return;
 
-        p = strappenda(path, ids);
+        p = strappenda(path, id);
         r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec, false);
         if (r < 0 && r != -ENOENT)
-                log_error("Failed to vacuum %s: %s", p, strerror(-r));
+                log_error_errno(r, "Failed to vacuum %s: %m", p);
 }
 
 void server_vacuum(Server *s) {
@@ -391,7 +395,7 @@ void server_vacuum(Server *s) {
 
         r = sd_id128_get_machine(&machine);
         if (r < 0) {
-                log_error("Failed to get machine ID: %s", strerror(-r));
+                log_error_errno(r, "Failed to get machine ID: %m");
                 return;
         }
         sd_id128_to_string(machine, ids);
@@ -446,18 +450,20 @@ static void server_cache_hostname(Server *s) {
         s->hostname_field = x;
 }
 
-bool shall_try_append_again(JournalFile *f, int r) {
+static bool shall_try_append_again(JournalFile *f, int r) {
 
         /* -E2BIG            Hit configured limit
            -EFBIG            Hit fs limit
            -EDQUOT           Quota limit hit
            -ENOSPC           Disk full
+           -EIO              I/O error of some kind (mmap)
            -EHOSTDOWN        Other machine
            -EBUSY            Unclean shutdown
            -EPROTONOSUPPORT  Unsupported feature
            -EBADMSG          Corrupted
            -ENODATA          Truncated
-           -ESHUTDOWN        Already archived */
+           -ESHUTDOWN        Already archived
+           -EIDRM            Journal file has been deleted */
 
         if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC)
                 log_debug("%s: Allocation limit reached, rotating.", f->path);
@@ -469,6 +475,10 @@ bool shall_try_append_again(JournalFile *f, int r) {
                 log_info("%s: Unsupported feature, rotating.", f->path);
         else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN)
                 log_warning("%s: Journal file corrupted, rotating.", f->path);
+        else if (r == -EIO)
+                log_warning("%s: IO error, rotating.", f->path);
+        else if (r == -EIDRM)
+                log_warning("%s: Journal file has been deleted, rotating.", f->path);
         else
                 return false;
 
@@ -506,12 +516,7 @@ static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned
         }
 
         if (vacuumed || !shall_try_append_again(f, r)) {
-                size_t size = 0;
-                unsigned i;
-                for (i = 0; i < n; i++)
-                        size += iovec[i].iov_len;
-
-                log_error("Failed to write entry (%d items, %zu bytes), ignoring: %s", n, size, strerror(-r));
+                log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
                 return;
         }
 
@@ -524,14 +529,9 @@ static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned
 
         log_debug("Retrying write.");
         r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
-        if (r < 0) {
-                size_t size = 0;
-                unsigned i;
-                for (i = 0; i < n; i++)
-                        size += iovec[i].iov_len;
-
-                log_error("Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %s", n, size, strerror(-r));
-        } else
+        if (r < 0)
+                log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
+        else
                 server_schedule_sync(s, priority);
 }
 
@@ -811,7 +811,7 @@ static void dispatch_message_real(
                  * realuid is not root, in order not to accidentally
                  * leak privileged information to the user that is
                  * logged by a privileged process that is part of an
-                 * unprivileged session.*/
+                 * unprivileged session. */
                 journal_uid = owner;
         else
                 journal_uid = 0;
@@ -841,7 +841,7 @@ void server_driver_message(Server *s, sd_id128_t message_id, const char *format,
         IOVEC_SET_STRING(iovec[n++], buffer);
 
         if (!sd_id128_equal(message_id, SD_ID128_NULL)) {
-                snprintf(mid, sizeof(mid), MESSAGE_ID(message_id));
+                snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id));
                 char_array_0(mid);
                 IOVEC_SET_STRING(iovec[n++], mid);
         }
@@ -927,10 +927,8 @@ static int system_journal_open(Server *s, bool flush_requested) {
         char ids[33];
 
         r = sd_id128_get_machine(&machine);
-        if (r < 0) {
-                log_error("Failed to get machine id: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to get machine id: %m");
 
         sd_id128_to_string(machine, ids);
 
@@ -958,7 +956,7 @@ static int system_journal_open(Server *s, bool flush_requested) {
                         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));
+                                log_warning_errno(r, "Failed to open system journal: %m");
 
                         r = 0;
                 }
@@ -982,7 +980,7 @@ static int system_journal_open(Server *s, bool flush_requested) {
 
                         if (r < 0) {
                                 if (r != -ENOENT)
-                                        log_warning("Failed to open runtime journal: %s", strerror(-r));
+                                        log_warning_errno(r, "Failed to open runtime journal: %m");
 
                                 r = 0;
                         }
@@ -999,10 +997,8 @@ static int system_journal_open(Server *s, bool flush_requested) {
                         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) {
-                                log_error("Failed to open runtime journal: %s", strerror(-r));
-                                return r;
-                        }
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to open runtime journal: %m");
                 }
 
                 if (s->runtime_journal)
@@ -1045,10 +1041,8 @@ int server_flush_to_var(Server *s) {
                 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;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to read runtime journal: %m");
 
         sd_journal_set_data_threshold(j, 0);
 
@@ -1063,7 +1057,7 @@ int server_flush_to_var(Server *s) {
 
                 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));
+                        log_error_errno(r, "Can't read entry: %m");
                         goto finish;
                 }
 
@@ -1072,7 +1066,7 @@ int server_flush_to_var(Server *s) {
                         continue;
 
                 if (!shall_try_append_again(s->system_journal, r)) {
-                        log_error("Can't write entry: %s", strerror(-r));
+                        log_error_errno(r, "Can't write entry: %m");
                         goto finish;
                 }
 
@@ -1088,7 +1082,7 @@ int server_flush_to_var(Server *s) {
                 log_debug("Retrying write.");
                 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));
+                        log_error_errno(r, "Can't write entry: %m");
                         goto finish;
                 }
         }
@@ -1109,7 +1103,7 @@ finish:
         return r;
 }
 
-int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
+int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
         Server *s = userdata;
 
         assert(s);
@@ -1137,7 +1131,7 @@ int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userda
                          * 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.*/
+                         * 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 */
@@ -1164,7 +1158,7 @@ int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userda
                  * don't rely on it. */
                 (void) ioctl(fd, SIOCINQ, &v);
 
-                /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful!*/
+                /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */
                 m = PAGE_ALIGN(MAX3((size_t) v + 1,
                                     (size_t) LINE_MAX,
                                     ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1);
@@ -1180,7 +1174,7 @@ int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userda
                         if (errno == EINTR || errno == EAGAIN)
                                 return 0;
 
-                        log_error("recvmsg() failed: %m");
+                        log_error_errno(errno, "recvmsg() failed: %m");
                         return -errno;
                 }
 
@@ -1226,7 +1220,7 @@ int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userda
                         assert(fd == s->audit_fd);
 
                         if (n > 0 && n_fds == 0)
-                                server_process_audit_message(s, s->buffer, n, ucred, tv, &sa, msghdr.msg_namelen);
+                                server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen);
                         else if (n_fds > 0)
                                 log_warning("Got file descriptors via audit socket. Ignoring.");
                 }
@@ -1310,10 +1304,10 @@ static int server_parse_proc_cmdline(Server *s) {
         int r;
 
         r = proc_cmdline(&line);
-        if (r < 0)
-                log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
-        if (r <= 0)
+        if (r < 0) {
+                log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");
                 return 0;
+        }
 
         FOREACH_WORD_QUOTED(w, l, line, state) {
                 _cleanup_free_ char *word;
@@ -1357,10 +1351,11 @@ static int server_parse_proc_cmdline(Server *s) {
 static int server_parse_config_file(Server *s) {
         assert(s);
 
-        return config_parse(NULL, "/etc/systemd/journald.conf", NULL,
-                            "Journal\0",
-                            config_item_perf_lookup, journald_gperf_lookup,
-                            false, false, true, s);
+        return config_parse_many("/etc/systemd/journald.conf",
+                                 CONF_DIRS_NULSTR("systemd/journald.conf"),
+                                 "Journal\0",
+                                 config_item_perf_lookup, journald_gperf_lookup,
+                                 false, s);
 }
 
 static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) {
@@ -1437,10 +1432,8 @@ static int server_open_hostname(Server *s) {
         assert(s);
 
         s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);
-        if (s->hostname_fd < 0) {
-                log_error("Failed to open /proc/sys/kernel/hostname: %m");
-                return -errno;
-        }
+        if (s->hostname_fd < 0)
+                return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m");
 
         r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s);
         if (r < 0) {
@@ -1453,20 +1446,18 @@ static int server_open_hostname(Server *s) {
                         return 0;
                 }
 
-                log_error("Failed to register hostname fd in event loop: %s", strerror(-r));
-                return r;
+                return log_error_errno(r, "Failed to register hostname fd in event loop: %m");
         }
 
         r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10);
-        if (r < 0) {
-                log_error("Failed to adjust priority of host name event source: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to adjust priority of host name event source: %m");
 
         return 0;
 }
 
 int server_init(Server *s) {
+        _cleanup_fdset_free_ FDSet *fds = NULL;
         int n, r, fd;
 
         assert(s);
@@ -1514,18 +1505,14 @@ int server_init(Server *s) {
                 return log_oom();
 
         r = sd_event_default(&s->event);
-        if (r < 0) {
-                log_error("Failed to create event loop: %s", strerror(-r));
-                return r;
-        }
+        if (r < 0)
+                return log_error_errno(r, "Failed to create event loop: %m");
 
         sd_event_set_watchdog(s->event, true);
 
         n = sd_listen_fds(true);
-        if (n < 0) {
-                log_error("Failed to read listening file descriptors from environment: %s", strerror(-n));
-                return n;
-        }
+        if (n < 0)
+                return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
 
         for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
 
@@ -1567,20 +1554,33 @@ int server_init(Server *s) {
                         s->audit_fd = fd;
 
                 } else {
-                        log_error("Unknown socket passed.");
-                        return -EINVAL;
+
+                        if (!fds) {
+                                fds = fdset_new();
+                                if (!fds)
+                                        return log_oom();
+                        }
+
+                        r = fdset_put(fds, fd);
+                        if (r < 0)
+                                return log_oom();
                 }
         }
 
-        r = server_open_syslog_socket(s);
+        r = server_open_stdout_socket(s, fds);
         if (r < 0)
                 return r;
 
-        r = server_open_native_socket(s);
+        if (fdset_size(fds) > 0) {
+                log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds));
+                fds = fdset_free(fds);
+        }
+
+        r = server_open_syslog_socket(s);
         if (r < 0)
                 return r;
 
-        r = server_open_stdout_socket(s);
+        r = server_open_native_socket(s);
         if (r < 0)
                 return r;