chiark / gitweb /
remove unused includes
[elogind.git] / src / journal / journalctl.c
index 317b662ca626de4febfd382cd225d1a3d5f4f1db..56435ff7b4467455879ab41f7c08356fdc58d8b3 100644 (file)
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
-#include <time.h>
 #include <getopt.h>
 #include <signal.h>
 #include <poll.h>
 #include <sys/stat.h>
-#include <sys/ioctl.h>
 #include <sys/inotify.h>
 #include <linux/fs.h>
 
-#ifdef HAVE_ACL
-#include <sys/acl.h>
-#include "acl-util.h"
-#endif
-
 #include "sd-journal.h"
 #include "sd-bus.h"
 
 #include "log.h"
 #include "logs-show.h"
 #include "util.h"
+#include "acl-util.h"
 #include "path-util.h"
 #include "fileio.h"
 #include "build.h"
 #include "pager.h"
 #include "strv.h"
 #include "set.h"
+#include "sigbus.h"
 #include "journal-internal.h"
 #include "journal-def.h"
 #include "journal-verify.h"
-#include "journal-authenticate.h"
 #include "journal-qrcode.h"
 #include "journal-vacuum.h"
 #include "fsprg.h"
@@ -197,19 +191,19 @@ static void help(void) {
                "     --system              Show the system journal\n"
                "     --user                Show the user journal for the current user\n"
                "  -M --machine=CONTAINER   Operate on local container\n"
-               "     --since=DATE          Start showing entries on or newer than the specified date\n"
-               "     --until=DATE          Stop showing entries on or newer than the specified date\n"
-               "  -c --cursor=CURSOR       Start showing entries from the specified cursor\n"
-               "     --after-cursor=CURSOR Start showing entries from after the specified cursor\n"
+               "     --since=DATE          Show entries not older than the specified date\n"
+               "     --until=DATE          Show entries not newer than the specified date\n"
+               "  -c --cursor=CURSOR       Show entries starting at the specified cursor\n"
+               "     --after-cursor=CURSOR Show entries after the specified cursor\n"
                "     --show-cursor         Print the cursor after all the entries\n"
-               "  -b --boot[=ID]           Show data only from ID or, if unspecified, the current boot\n"
+               "  -b --boot[=ID]           Show current boot or the specified boot\n"
                "     --list-boots          Show terse information about recorded boots\n"
                "  -k --dmesg               Show kernel message log from the current boot\n"
-               "  -u --unit=UNIT           Show data only from the specified unit\n"
-               "     --user-unit=UNIT      Show data only from the specified user session unit\n"
-               "  -t --identifier=STRING   Show only messages with the specified syslog identifier\n"
-               "  -p --priority=RANGE      Show only messages within the specified priority range\n"
-               "  -e --pager-end           Immediately jump to end of the journal in the pager\n"
+               "  -u --unit=UNIT           Show logs from the specified unit\n"
+               "     --user-unit=UNIT      Show logs from the specified user unit\n"
+               "  -t --identifier=STRING   Show entries with the specified syslog identifier\n"
+               "  -p --priority=RANGE      Show entries with the specified priority\n"
+               "  -e --pager-end           Immediately jump to the end in the pager\n"
                "  -f --follow              Follow the journal\n"
                "  -n --lines[=INTEGER]     Number of journal entries to show\n"
                "     --no-tail             Show all lines, even in follow mode\n"
@@ -230,7 +224,7 @@ static void help(void) {
 #ifdef HAVE_GCRYPT
                "     --interval=TIME       Time interval for changing the FSS sealing key\n"
                "     --verify-key=KEY      Specify FSS verification key\n"
-               "     --force               Force overriding of the FSS key pair with --setup-keys\n"
+               "     --force               Override of the FSS key pair with --setup-keys\n"
 #endif
                "\nCommands:\n"
                "  -h --help                Show this help text\n"
@@ -238,11 +232,11 @@ static void help(void) {
                "  -F --field=FIELD         List all values that a specified field takes\n"
                "     --new-id128           Generate a new 128-bit ID\n"
                "     --disk-usage          Show total disk usage of all journal files\n"
-               "     --vacuum-size=BYTES   Remove old journals until disk space drops below size\n"
-               "     --vacuum-time=TIME    Remove old journals until none left older than\n"
+               "     --vacuum-size=BYTES   Reduce disk usage below specified size\n"
+               "     --vacuum-time=TIME    Remove journal files older than specified date\n"
                "     --flush               Flush all journal data from /run into /var\n"
                "     --header              Show journal header information\n"
-               "     --list-catalog        Show message IDs of all entries in the message catalog\n"
+               "     --list-catalog        Show all message IDs in the catalog\n"
                "     --dump-catalog        Show entries in the message catalog\n"
                "     --update-catalog      Update the message catalog database\n"
 #ifdef HAVE_GCRYPT
@@ -794,10 +788,8 @@ static int add_matches(sd_journal *j, char **args) {
                         p = canonicalize_file_name(*i);
                         path = p ? p : *i;
 
-                        if (stat(path, &st) < 0)  {
-                                log_error_errno(errno, "Couldn't stat file: %m");
-                                return -errno;
-                        }
+                        if (stat(path, &st) < 0)
+                                return log_error_errno(errno, "Couldn't stat file: %m");
 
                         if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
                                 if (executable_is_script(path, &interpreter) > 0) {
@@ -1274,7 +1266,7 @@ static int add_syslog_identifier(sd_journal *j) {
         STRV_FOREACH(i, arg_syslog_identifier) {
                 char *u;
 
-                u = strappenda("SYSLOG_IDENTIFIER=", *i);
+                u = strjoina("SYSLOG_IDENTIFIER=", *i);
                 r = sd_journal_add_match(j, u, 0);
                 if (r < 0)
                         return r;
@@ -1295,7 +1287,7 @@ static int setup_keys(void) {
         size_t mpk_size, seed_size, state_size, i;
         uint8_t *mpk, *seed, *state;
         ssize_t l;
-        int fd = -1, r, attr = 0;
+        int fd = -1, r;
         sd_id128_t machine, boot;
         char *p = NULL, *k = NULL;
         struct FSSHeader h;
@@ -1303,10 +1295,8 @@ static int setup_keys(void) {
         struct stat st;
 
         r = stat("/var/log/journal", &st);
-        if (r < 0 && errno != ENOENT && errno != ENOTDIR) {
-                log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
-                return -errno;
-        }
+        if (r < 0 && errno != ENOENT && errno != ENOTDIR)
+                return log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
 
         if (r < 0 || !S_ISDIR(st.st_mode)) {
                 log_error("%s is not a directory, must be using persistent logging for FSS.",
@@ -1392,13 +1382,9 @@ static int setup_keys(void) {
 
         /* Enable secure remove, exclusion from dump, synchronous
          * writing and in-place updating */
-        if (ioctl(fd, FS_IOC_GETFLAGS, &attr) < 0)
-                log_warning_errno(errno, "FS_IOC_GETFLAGS failed: %m");
-
-        attr |= FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL;
-
-        if (ioctl(fd, FS_IOC_SETFLAGS, &attr) < 0)
-                log_warning_errno(errno, "FS_IOC_SETFLAGS failed: %m");
+        r = chattr_fd(fd, true, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL);
+        if (r < 0)
+                log_warning_errno(errno, "Failed to set file attributes: %m");
 
         zero(h);
         memcpy(h.signature, "KSHHRHLP", 8);
@@ -1410,17 +1396,15 @@ static int setup_keys(void) {
         h.fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR);
         h.fsprg_state_size = htole64(state_size);
 
-        l = loop_write(fd, &h, sizeof(h), false);
-        if (l < 0 || (size_t) l != sizeof(h)) {
-                log_error_errno(EIO, "Failed to write header: %m");
-                r = -EIO;
+        r = loop_write(fd, &h, sizeof(h), false);
+        if (r < 0) {
+                log_error_errno(r, "Failed to write header: %m");
                 goto finish;
         }
 
-        l = loop_write(fd, state, state_size, false);
-        if (l < 0 || (size_t) l != state_size) {
-                log_error_errno(EIO, "Failed to write state: %m");
-                r = -EIO;
+        r = loop_write(fd, state, state_size, false);
+        if (r < 0) {
+                log_error_errno(r, "Failed to write state: %m");
                 goto finish;
         }
 
@@ -1685,25 +1669,19 @@ static int flush_to_var(void) {
         mkdir_p("/run/systemd/journal", 0755);
 
         watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
-        if (watch_fd < 0) {
-                log_error_errno(errno, "Failed to create inotify watch: %m");
-                return -errno;
-        }
+        if (watch_fd < 0)
+                return log_error_errno(errno, "Failed to create inotify watch: %m");
 
         r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_CREATE|IN_DONT_FOLLOW|IN_ONLYDIR);
-        if (r < 0) {
-                log_error_errno(errno, "Failed to watch journal directory: %m");
-                return -errno;
-        }
+        if (r < 0)
+                return log_error_errno(errno, "Failed to watch journal directory: %m");
 
         for (;;) {
                 if (access("/run/systemd/journal/flushed", F_OK) >= 0)
                         break;
 
-                if (errno != ENOENT) {
-                        log_error_errno(errno, "Failed to check for existance of /run/systemd/journal/flushed: %m");
-                        return -errno;
-                }
+                if (errno != ENOENT)
+                        return log_error_errno(errno, "Failed to check for existence of /run/systemd/journal/flushed: %m");
 
                 r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
                 if (r < 0)
@@ -1735,6 +1713,12 @@ int main(int argc, char *argv[]) {
                 goto finish;
 
         signal(SIGWINCH, columns_lines_cache_reset);
+        sigbus_install();
+
+        /* Increase max number of open files to 16K if we can, we
+         * might needs this when browsing journal files, which might
+         * be split up into many files. */
+        setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
 
         if (arg_action == ACTION_NEW_ID128) {
                 r = generate_new_id128();
@@ -1885,7 +1869,7 @@ int main(int argc, char *argv[]) {
                 return EXIT_FAILURE;
         }
 
-        if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) {
+        if (_unlikely_(log_get_max_level() >= LOG_DEBUG)) {
                 _cleanup_free_ char *filter;
 
                 filter = journal_make_match_string(j);
@@ -1944,9 +1928,13 @@ int main(int argc, char *argv[]) {
                 else
                         r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor);
 
-                if (arg_after_cursor && r < 2 && !arg_follow)
+                if (arg_after_cursor && r < 2) {
                         /* We couldn't find the next entry after the cursor. */
-                        arg_lines = 0;
+                        if (arg_follow)
+                                need_seek = true;
+                        else
+                                arg_lines = 0;
+                }
 
         } else if (arg_since_set && !arg_reverse) {
                 r = sd_journal_seek_realtime_usec(j, arg_since);