chiark / gitweb /
Merge branch 'python-systemd-reader'
[elogind.git] / src / journal / journalctl.c
index 5185b4b398286f2589e90059b3b967ca14d37437..90845097049b183098417325c74239118b6e1697 100644 (file)
@@ -19,6 +19,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <locale.h>
 #include <fcntl.h>
 #include <errno.h>
 #include <stddef.h>
@@ -33,8 +34,6 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <linux/fs.h>
-#include <locale.h>
-#include <langinfo.h>
 
 #include <systemd/sd-journal.h>
 
 #include "journal-qrcode.h"
 #include "fsprg.h"
 #include "unit-name.h"
+#include "catalog.h"
 
 #define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
 
 static OutputMode arg_output = OUTPUT_SHORT;
 static bool arg_follow = false;
+static bool arg_full = false;
 static bool arg_all = false;
 static bool arg_no_pager = false;
-static unsigned arg_lines = 0;
+static int arg_lines = -1;
 static bool arg_no_tail = false;
 static bool arg_quiet = false;
 static bool arg_merge = false;
@@ -75,6 +76,7 @@ static usec_t arg_since, arg_until;
 static bool arg_since_set = false, arg_until_set = false;
 static const char *arg_unit = NULL;
 static const char *arg_field = NULL;
+static bool arg_catalog = false;
 
 static enum {
         ACTION_SHOW,
@@ -83,6 +85,8 @@ static enum {
         ACTION_SETUP_KEYS,
         ACTION_VERIFY,
         ACTION_DISK_USAGE,
+        ACTION_LIST_CATALOG,
+        ACTION_UPDATE_CATALOG
 } arg_action = ACTION_SHOW;
 
 static int help(void) {
@@ -101,6 +105,8 @@ static int help(void) {
                "     --no-tail           Show all lines, even in follow mode\n"
                "  -o --output=STRING     Change journal output mode (short, short-monotonic,\n"
                "                         verbose, export, json, json-pretty, json-sse, cat)\n"
+               "  -x --catalog           Add message explanations where available\n"
+               "     --full              Do not ellipsize fields\n"
                "  -a --all               Show all fields, including long and unprintable\n"
                "  -q --quiet             Don't show privilege warning\n"
                "     --no-pager          Do not pipe output into a pager\n"
@@ -117,6 +123,8 @@ static int help(void) {
                "     --header            Show journal header information\n"
                "     --disk-usage        Show total disk usage\n"
                "  -F --field=FIELD       List all values a certain field takes\n"
+               "     --list-catalog      Show message IDs of all entries in the message catalog\n"
+               "     --update-catalog    Update the message catalog database\n"
 #ifdef HAVE_GCRYPT
                "     --setup-keys        Generate new FSS key pair\n"
                "     --verify            Verify journal file consistency\n"
@@ -134,13 +142,16 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_NO_TAIL,
                 ARG_NEW_ID128,
                 ARG_HEADER,
+                ARG_FULL,
                 ARG_SETUP_KEYS,
                 ARG_INTERVAL,
                 ARG_VERIFY,
                 ARG_VERIFY_KEY,
                 ARG_DISK_USAGE,
                 ARG_SINCE,
-                ARG_UNTIL
+                ARG_UNTIL,
+                ARG_LIST_CATALOG,
+                ARG_UPDATE_CATALOG
         };
 
         static const struct option options[] = {
@@ -150,6 +161,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "follow",       no_argument,       NULL, 'f'              },
                 { "output",       required_argument, NULL, 'o'              },
                 { "all",          no_argument,       NULL, 'a'              },
+                { "full",         no_argument,       NULL, ARG_FULL         },
                 { "lines",        optional_argument, NULL, 'n'              },
                 { "no-tail",      no_argument,       NULL, ARG_NO_TAIL      },
                 { "new-id128",    no_argument,       NULL, ARG_NEW_ID128    },
@@ -158,7 +170,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "this-boot",    no_argument,       NULL, 'b'              },
                 { "directory",    required_argument, NULL, 'D'              },
                 { "header",       no_argument,       NULL, ARG_HEADER       },
-                { "priority",     no_argument,       NULL, 'p'              },
+                { "priority",     required_argument, NULL, 'p'              },
                 { "setup-keys",   no_argument,       NULL, ARG_SETUP_KEYS   },
                 { "interval",     required_argument, NULL, ARG_INTERVAL     },
                 { "verify",       no_argument,       NULL, ARG_VERIFY       },
@@ -169,6 +181,9 @@ static int parse_argv(int argc, char *argv[]) {
                 { "until",        required_argument, NULL, ARG_UNTIL        },
                 { "unit",         required_argument, NULL, 'u'              },
                 { "field",        required_argument, NULL, 'F'              },
+                { "catalog",      no_argument,       NULL, 'x'              },
+                { "list-catalog", no_argument,       NULL, ARG_LIST_CATALOG },
+                { "update-catalog",no_argument,      NULL, ARG_UPDATE_CATALOG },
                 { NULL,           0,                 NULL, 0                }
         };
 
@@ -177,7 +192,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "hfo:an::qmbD:p:c:u:F:", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "hfo:an::qmbD:p:c:u:F:x", options, NULL)) >= 0) {
 
                 switch (c) {
 
@@ -187,7 +202,6 @@ static int parse_argv(int argc, char *argv[]) {
 
                 case ARG_VERSION:
                         puts(PACKAGE_STRING);
-                        puts(DISTRIBUTION);
                         puts(SYSTEMD_FEATURES);
                         return 0;
 
@@ -197,7 +211,6 @@ static int parse_argv(int argc, char *argv[]) {
 
                 case 'f':
                         arg_follow = true;
-                        signal(SIGWINCH, columns_cache_reset);
                         break;
 
                 case 'o':
@@ -216,19 +229,40 @@ static int parse_argv(int argc, char *argv[]) {
 
                         break;
 
+                case ARG_FULL:
+                        arg_full = true;
+                        break;
+
                 case 'a':
                         arg_all = true;
                         break;
 
                 case 'n':
                         if (optarg) {
-                                r = safe_atou(optarg, &arg_lines);
-                                if (r < 0 || arg_lines <= 0) {
+                                r = safe_atoi(optarg, &arg_lines);
+                                if (r < 0 || arg_lines < 0) {
                                         log_error("Failed to parse lines '%s'", optarg);
                                         return -EINVAL;
                                 }
-                        } else
-                                arg_lines = 10;
+                        } else {
+                                int n;
+
+                                /* Hmm, no argument? Maybe the next
+                                 * word on the command line is
+                                 * supposed to be the argument? Let's
+                                 * see if there is one, and is
+                                 * parsable as a positive
+                                 * integer... */
+
+                                if (optind < argc &&
+                                    safe_atoi(argv[optind], &n) >= 0 &&
+                                    n >= 0) {
+
+                                        arg_lines = n;
+                                        optind++;
+                                } else
+                                        arg_lines = 10;
+                        }
 
                         break;
 
@@ -378,16 +412,28 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_field = optarg;
                         break;
 
+                case 'x':
+                        arg_catalog = true;
+                        break;
+
+                case ARG_LIST_CATALOG:
+                        arg_action = ACTION_LIST_CATALOG;
+                        break;
+
+                case ARG_UPDATE_CATALOG:
+                        arg_action = ACTION_UPDATE_CATALOG;
+                        break;
+
                 default:
                         log_error("Unknown option code %c", c);
                         return -EINVAL;
                 }
         }
 
-        if (arg_follow && !arg_no_tail && arg_lines <= 0)
+        if (arg_follow && !arg_no_tail && arg_lines < 0)
                 arg_lines = 10;
 
-        if (arg_since_set && arg_until_set && arg_since_set > arg_until_set) {
+        if (arg_since_set && arg_until_set && arg_since > arg_until) {
                 log_error("--since= must be before --until=.");
                 return -EINVAL;
         }
@@ -400,21 +446,6 @@ static int parse_argv(int argc, char *argv[]) {
         return 1;
 }
 
-static bool on_tty(void) {
-        static int t = -1;
-
-        /* Note that this is invoked relatively early, before we start
-         * the pager. That means the value we return reflects whether
-         * we originally were started on a tty, not if we currently
-         * are. But this is intended, since we want colour and so on
-         * when run in our own pager. */
-
-        if (_unlikely_(t < 0))
-                t = isatty(STDOUT_FILENO) > 0;
-
-        return t;
-}
-
 static int generate_new_id128(void) {
         sd_id128_t id;
         int r;
@@ -431,14 +462,17 @@ static int generate_new_id128(void) {
                "As UUID:\n"
                "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
                "As macro:\n"
-              "#define MESSAGE_XYZ SD_ID128_MAKE(",
+               "#define MESSAGE_XYZ SD_ID128_MAKE(",
                SD_ID128_FORMAT_VAL(id),
                SD_ID128_FORMAT_VAL(id));
-
         for (i = 0; i < 16; i++)
                 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
+        fputs(")\n\n", stdout);
 
-        fputs(")\n", stdout);
+        printf("As Python constant:\n"
+               ">>> import uuid\n"
+               ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
+               SD_ID128_FORMAT_VAL(id));
 
         return 0;
 }
@@ -563,8 +597,6 @@ static int add_priorities(sd_journal *j) {
                 if (arg_priorities & (1 << i)) {
                         match[sizeof(match)-2] = '0' + i;
 
-                        log_info("adding match %s", match);
-
                         r = sd_journal_add_match(j, match, strlen(match));
                         if (r < 0) {
                                 log_error("Failed to add match: %s", strerror(-r));
@@ -697,7 +729,7 @@ static int setup_keys(void) {
                 goto finish;
         }
 
-        if (isatty(STDOUT_FILENO)) {
+        if (on_tty()) {
                 fprintf(stderr,
                         "\n"
                         "The new key pair has been generated. The " ANSI_HIGHLIGHT_ON "secret sealing key" ANSI_HIGHLIGHT_OFF " has been written to\n"
@@ -719,7 +751,7 @@ static int setup_keys(void) {
 
         printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval);
 
-        if (isatty(STDOUT_FILENO)) {
+        if (on_tty()) {
                 char tsb[FORMAT_TIMESPAN_MAX], *hn;
 
                 fprintf(stderr,
@@ -737,9 +769,7 @@ static int setup_keys(void) {
 
 #ifdef HAVE_QRENCODE
                 /* If this is not an UTF-8 system don't print any QR codes */
-                setlocale(LC_CTYPE, "");
-
-                if (streq_ptr(nl_langinfo(CODESET), "UTF-8")) {
+                if (is_locale_utf8()) {
                         fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr);
                         print_qr_code(stderr, seed, seed_size, n, arg_interval, hn, machine);
                 }
@@ -839,10 +869,10 @@ int main(int argc, char *argv[]) {
         sd_journal *j = NULL;
         bool need_seek = false;
         sd_id128_t previous_boot_id;
-        bool previous_boot_id_valid = false;
-        bool have_pager;
-        unsigned n_shown = 0;
+        bool previous_boot_id_valid = false, first_line = true;
+        int n_shown = 0;
 
+        setlocale(LC_ALL, "");
         log_parse_environment();
         log_open();
 
@@ -850,6 +880,8 @@ int main(int argc, char *argv[]) {
         if (r <= 0)
                 goto finish;
 
+        signal(SIGWINCH, columns_lines_cache_reset);
+
         if (arg_action == ACTION_NEW_ID128) {
                 r = generate_new_id128();
                 goto finish;
@@ -860,6 +892,18 @@ int main(int argc, char *argv[]) {
                 goto finish;
         }
 
+        if (arg_action == ACTION_LIST_CATALOG)  {
+                r = catalog_list(stdout);
+                if (r < 0)
+                        log_error("Failed to list catalog: %s", strerror(-r));
+                goto finish;
+        }
+
+        if (arg_action == ACTION_UPDATE_CATALOG)  {
+                r = catalog_update();
+                goto finish;
+        }
+
         r = access_check();
         if (r < 0)
                 goto finish;
@@ -913,6 +957,11 @@ int main(int argc, char *argv[]) {
         if (r < 0)
                 goto finish;
 
+        /* Opening the fd now means the first sd_journal_wait() will actually wait */
+        r = sd_journal_get_fd(j);
+        if (r < 0)
+                goto finish;
+
         if (arg_field) {
                 const void *data;
                 size_t size;
@@ -926,7 +975,7 @@ int main(int argc, char *argv[]) {
                 SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
                         const void *eq;
 
-                        if (arg_lines > 0 && n_shown >= arg_lines)
+                        if (arg_lines >= 0 && n_shown >= arg_lines)
                                 break;
 
                         eq = memchr(data, '=', size);
@@ -959,7 +1008,7 @@ int main(int argc, char *argv[]) {
                 }
                 r = sd_journal_next(j);
 
-        } else if (arg_lines > 0) {
+        } else if (arg_lines >= 0) {
                 r = sd_journal_seek_tail(j);
                 if (r < 0) {
                         log_error("Failed to seek to tail: %s", strerror(-r));
@@ -983,8 +1032,8 @@ int main(int argc, char *argv[]) {
                 goto finish;
         }
 
-        on_tty();
-        have_pager = !arg_no_pager && !arg_follow && pager_open();
+        if (!arg_no_pager && !arg_follow)
+                pager_open();
 
         if (!arg_quiet) {
                 usec_t start, end;
@@ -1008,7 +1057,7 @@ int main(int argc, char *argv[]) {
         }
 
         for (;;) {
-                while (arg_lines == 0 || arg_follow || n_shown < arg_lines) {
+                while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) {
                         int flags;
 
                         if (need_seek) {
@@ -1030,6 +1079,8 @@ int main(int argc, char *argv[]) {
                                         log_error("Failed to determine timestamp: %s", strerror(-r));
                                         goto finish;
                                 }
+                                if (usec > arg_until)
+                                        goto finish;
                         }
 
                         if (!arg_merge) {
@@ -1048,11 +1099,12 @@ int main(int argc, char *argv[]) {
 
                         flags =
                                 arg_all * OUTPUT_SHOW_ALL |
-                                (!on_tty() || have_pager) * OUTPUT_FULL_WIDTH |
-                                on_tty() * OUTPUT_COLOR;
+                                (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
+                                on_tty() * OUTPUT_COLOR |
+                                arg_catalog * OUTPUT_CATALOG;
 
                         r = output_journal(stdout, j, arg_output, 0, flags);
-                        if (r < 0)
+                        if (r < 0 || ferror(stdout))
                                 goto finish;
 
                         need_seek = true;
@@ -1067,6 +1119,8 @@ int main(int argc, char *argv[]) {
                         log_error("Couldn't wait for journal event: %s", strerror(-r));
                         goto finish;
                 }
+
+                first_line = false;
         }
 
 finish: