X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fjournal%2Fjournalctl.c;h=0afeef932e54b89f615cf91570b0d0c239240894;hb=56f64d95763a799ba4475daf44d8e9f72a1bd474;hp=393601c7753938d018a8f7bdc084113badd9d569;hpb=39f7f5c108a55b8f6898154d4f7702a3443ac4d0;p=elogind.git diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c index 393601c77..317b662ca 100644 --- a/src/journal/journalctl.c +++ b/src/journal/journalctl.c @@ -6,84 +6,338 @@ Copyright 2011 Lennart Poettering systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see . ***/ +#include #include +#include #include #include #include #include #include #include -#include #include #include +#include +#include +#include +#include +#include +#include -#include +#ifdef HAVE_ACL +#include +#include "acl-util.h" +#endif + +#include "sd-journal.h" +#include "sd-bus.h" #include "log.h" +#include "logs-show.h" #include "util.h" +#include "path-util.h" +#include "fileio.h" #include "build.h" #include "pager.h" -#include "logs-show.h" +#include "strv.h" +#include "set.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" +#include "unit-name.h" +#include "catalog.h" +#include "mkdir.h" +#include "bus-util.h" +#include "bus-error.h" + +#define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE) + +enum { + /* Special values for arg_lines */ + ARG_LINES_DEFAULT = -2, + ARG_LINES_ALL = -1, +}; static OutputMode arg_output = OUTPUT_SHORT; +static bool arg_utc = false; +static bool arg_pager_end = false; static bool arg_follow = false; -static bool arg_show_all = false; +static bool arg_full = true; +static bool arg_all = false; static bool arg_no_pager = false; -static int arg_lines = -1; +static int arg_lines = ARG_LINES_DEFAULT; static bool arg_no_tail = false; -static bool arg_new_id128 = false; - -static int help(void) { - - printf("%s [OPTIONS...] {COMMAND} ...\n\n" - "Send control commands to or query the journal.\n\n" - " -h --help Show this help\n" - " --version Show package version\n" - " --no-pager Do not pipe output into a pager\n" - " -a --all Show all properties, including long and unprintable\n" - " -f --follow Follow journal\n" - " -n --lines=INTEGER Journal entries to show\n" - " --no-tail Show all lines, even in follow mode\n" - " -o --output=STRING Change journal output mode (short, verbose, export, json)\n" - " --new-id128 Generate a new 128 Bit id\n", - program_invocation_short_name); +static bool arg_quiet = false; +static bool arg_merge = false; +static bool arg_boot = false; +static sd_id128_t arg_boot_id = {}; +static int arg_boot_offset = 0; +static bool arg_dmesg = false; +static const char *arg_cursor = NULL; +static const char *arg_after_cursor = NULL; +static bool arg_show_cursor = false; +static const char *arg_directory = NULL; +static char **arg_file = NULL; +static int arg_priorities = 0xFF; +static const char *arg_verify_key = NULL; +#ifdef HAVE_GCRYPT +static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC; +static bool arg_force = false; +#endif +static usec_t arg_since, arg_until; +static bool arg_since_set = false, arg_until_set = false; +static char **arg_syslog_identifier = NULL; +static char **arg_system_units = NULL; +static char **arg_user_units = NULL; +static const char *arg_field = NULL; +static bool arg_catalog = false; +static bool arg_reverse = false; +static int arg_journal_type = 0; +static const char *arg_root = NULL; +static const char *arg_machine = NULL; +static off_t arg_vacuum_size = (off_t) -1; +static usec_t arg_vacuum_time = USEC_INFINITY; + +static enum { + ACTION_SHOW, + ACTION_NEW_ID128, + ACTION_PRINT_HEADER, + ACTION_SETUP_KEYS, + ACTION_VERIFY, + ACTION_DISK_USAGE, + ACTION_LIST_CATALOG, + ACTION_DUMP_CATALOG, + ACTION_UPDATE_CATALOG, + ACTION_LIST_BOOTS, + ACTION_FLUSH, + ACTION_VACUUM, +} arg_action = ACTION_SHOW; + +typedef struct boot_id_t { + sd_id128_t id; + uint64_t first; + uint64_t last; +} boot_id_t; + +static void pager_open_if_enabled(void) { + + if (arg_no_pager) + return; + + pager_open(arg_pager_end); +} + +static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) { + + if (arg_utc) + return format_timestamp_utc(buf, l, t); + + return format_timestamp(buf, l, t); +} + +static int parse_boot_descriptor(const char *x, sd_id128_t *boot_id, int *offset) { + sd_id128_t id = SD_ID128_NULL; + int off = 0, r; + + if (strlen(x) >= 32) { + char *t; + + t = strndupa(x, 32); + r = sd_id128_from_string(t, &id); + if (r >= 0) + x += 32; + + if (*x != '-' && *x != '+' && *x != 0) + return -EINVAL; + + if (*x != 0) { + r = safe_atoi(x, &off); + if (r < 0) + return r; + } + } else { + r = safe_atoi(x, &off); + if (r < 0) + return r; + } + + if (boot_id) + *boot_id = id; + + if (offset) + *offset = off; return 0; } +static void help(void) { + + pager_open_if_enabled(); + + printf("%s [OPTIONS...] [MATCHES...]\n\n" + "Query the journal.\n\n" + "Flags:\n" + " --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" + " --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" + " --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" + " -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" + " -r --reverse Show the newest entries first\n" + " -o --output=STRING Change journal output mode (short, short-iso,\n" + " short-precise, short-monotonic, verbose,\n" + " export, json, json-pretty, json-sse, cat)\n" + " --utc Express time in Coordinated Universal Time (UTC)\n" + " -x --catalog Add message explanations where available\n" + " --no-full Ellipsize fields\n" + " -a --all Show all fields, including long and unprintable\n" + " -q --quiet Do not show privilege warning\n" + " --no-pager Do not pipe output into a pager\n" + " -m --merge Show entries from all available journals\n" + " -D --directory=PATH Show journal files from directory\n" + " --file=PATH Show journal file\n" + " --root=ROOT Operate on catalog files underneath the root ROOT\n" +#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" +#endif + "\nCommands:\n" + " -h --help Show this help text\n" + " --version Show package version\n" + " -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" + " --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" + " --dump-catalog Show entries in the message catalog\n" + " --update-catalog Update the message catalog database\n" +#ifdef HAVE_GCRYPT + " --setup-keys Generate a new FSS key pair\n" + " --verify Verify journal file consistency\n" +#endif + , program_invocation_short_name); +} + static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_NO_PAGER, + ARG_NO_FULL, ARG_NO_TAIL, - ARG_NEW_ID128 + ARG_NEW_ID128, + ARG_LIST_BOOTS, + ARG_USER, + ARG_SYSTEM, + ARG_ROOT, + ARG_HEADER, + ARG_SETUP_KEYS, + ARG_FILE, + ARG_INTERVAL, + ARG_VERIFY, + ARG_VERIFY_KEY, + ARG_DISK_USAGE, + ARG_SINCE, + ARG_UNTIL, + ARG_AFTER_CURSOR, + ARG_SHOW_CURSOR, + ARG_USER_UNIT, + ARG_LIST_CATALOG, + ARG_DUMP_CATALOG, + ARG_UPDATE_CATALOG, + ARG_FORCE, + ARG_UTC, + ARG_FLUSH, + ARG_VACUUM_SIZE, + ARG_VACUUM_TIME, }; static const struct option options[] = { - { "help", no_argument, NULL, 'h' }, - { "version" , no_argument, NULL, ARG_VERSION }, - { "no-pager", no_argument, NULL, ARG_NO_PAGER }, - { "follow", no_argument, NULL, 'f' }, - { "output", required_argument, NULL, 'o' }, - { "all", no_argument, NULL, 'a' }, - { "lines", required_argument, NULL, 'n' }, - { "no-tail", no_argument, NULL, ARG_NO_TAIL }, - { "new-id128", no_argument, NULL, ARG_NEW_ID128 }, - { NULL, 0, NULL, 0 } + { "help", no_argument, NULL, 'h' }, + { "version" , no_argument, NULL, ARG_VERSION }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "pager-end", no_argument, NULL, 'e' }, + { "follow", no_argument, NULL, 'f' }, + { "force", no_argument, NULL, ARG_FORCE }, + { "output", required_argument, NULL, 'o' }, + { "all", no_argument, NULL, 'a' }, + { "full", no_argument, NULL, 'l' }, + { "no-full", no_argument, NULL, ARG_NO_FULL }, + { "lines", optional_argument, NULL, 'n' }, + { "no-tail", no_argument, NULL, ARG_NO_TAIL }, + { "new-id128", no_argument, NULL, ARG_NEW_ID128 }, + { "quiet", no_argument, NULL, 'q' }, + { "merge", no_argument, NULL, 'm' }, + { "boot", optional_argument, NULL, 'b' }, + { "list-boots", no_argument, NULL, ARG_LIST_BOOTS }, + { "this-boot", optional_argument, NULL, 'b' }, /* deprecated */ + { "dmesg", no_argument, NULL, 'k' }, + { "system", no_argument, NULL, ARG_SYSTEM }, + { "user", no_argument, NULL, ARG_USER }, + { "directory", required_argument, NULL, 'D' }, + { "file", required_argument, NULL, ARG_FILE }, + { "root", required_argument, NULL, ARG_ROOT }, + { "header", no_argument, NULL, ARG_HEADER }, + { "identifier", required_argument, NULL, 't' }, + { "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 }, + { "verify-key", required_argument, NULL, ARG_VERIFY_KEY }, + { "disk-usage", no_argument, NULL, ARG_DISK_USAGE }, + { "cursor", required_argument, NULL, 'c' }, + { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR }, + { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR }, + { "since", required_argument, NULL, ARG_SINCE }, + { "until", required_argument, NULL, ARG_UNTIL }, + { "unit", required_argument, NULL, 'u' }, + { "user-unit", required_argument, NULL, ARG_USER_UNIT }, + { "field", required_argument, NULL, 'F' }, + { "catalog", no_argument, NULL, 'x' }, + { "list-catalog", no_argument, NULL, ARG_LIST_CATALOG }, + { "dump-catalog", no_argument, NULL, ARG_DUMP_CATALOG }, + { "update-catalog", no_argument, NULL, ARG_UPDATE_CATALOG }, + { "reverse", no_argument, NULL, 'r' }, + { "machine", required_argument, NULL, 'M' }, + { "utc", no_argument, NULL, ARG_UTC }, + { "flush", no_argument, NULL, ARG_FLUSH }, + { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE }, + { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME }, + {} }; int c, r; @@ -91,7 +345,7 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hfo:an:", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:t:u:F:xrM:", options, NULL)) >= 0) switch (c) { @@ -101,7 +355,6 @@ static int parse_argv(int argc, char *argv[]) { case ARG_VERSION: puts(PACKAGE_STRING); - puts(DISTRIBUTION); puts(SYSTEMD_FEATURES); return 0; @@ -109,29 +362,77 @@ static int parse_argv(int argc, char *argv[]) { arg_no_pager = true; break; + case 'e': + arg_pager_end = true; + + if (arg_lines == ARG_LINES_DEFAULT) + arg_lines = 1000; + + break; + case 'f': arg_follow = true; break; case 'o': - arg_output = output_mode_from_string(optarg); + arg_output = output_mode_from_string(optarg); if (arg_output < 0) { - log_error("Unknown output '%s'.", optarg); + log_error("Unknown output format '%s'.", optarg); return -EINVAL; } + if (arg_output == OUTPUT_EXPORT || + arg_output == OUTPUT_JSON || + arg_output == OUTPUT_JSON_PRETTY || + arg_output == OUTPUT_JSON_SSE || + arg_output == OUTPUT_CAT) + arg_quiet = true; + + break; + + case 'l': + arg_full = true; + break; + + case ARG_NO_FULL: + arg_full = false; break; case 'a': - arg_show_all = true; + arg_all = true; break; case 'n': - r = safe_atoi(optarg, &arg_lines); - if (r < 0 || arg_lines < 0) { - log_error("Failed to parse lines '%s'", optarg); - return -EINVAL; + if (optarg) { + if (streq(optarg, "all")) + arg_lines = ARG_LINES_ALL; + else { + 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; + + /* 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. */ + if (optind < argc) { + int n; + if (streq(argv[optind], "all")) { + arg_lines = ARG_LINES_ALL; + optind++; + } else if (safe_atoi(argv[optind], &n) >= 0 && n >= 0) { + arg_lines = n; + optind++; + } + } } + break; case ARG_NO_TAIL: @@ -139,21 +440,304 @@ static int parse_argv(int argc, char *argv[]) { break; case ARG_NEW_ID128: - arg_new_id128 = true; + arg_action = ACTION_NEW_ID128; + break; + + case 'q': + arg_quiet = true; + break; + + case 'm': + arg_merge = true; + break; + + case 'b': + arg_boot = true; + + if (optarg) { + r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset); + if (r < 0) { + log_error("Failed to parse boot descriptor '%s'", optarg); + return -EINVAL; + } + } else { + + /* 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 boot descriptor... */ + + if (optind < argc && + parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset) >= 0) + optind++; + } + + break; + + case ARG_LIST_BOOTS: + arg_action = ACTION_LIST_BOOTS; + break; + + case 'k': + arg_boot = arg_dmesg = true; + break; + + case ARG_SYSTEM: + arg_journal_type |= SD_JOURNAL_SYSTEM; + break; + + case ARG_USER: + arg_journal_type |= SD_JOURNAL_CURRENT_USER; + break; + + case 'M': + arg_machine = optarg; + break; + + case 'D': + arg_directory = optarg; + break; + + case ARG_FILE: + r = glob_extend(&arg_file, optarg); + if (r < 0) + return log_error_errno(r, "Failed to add paths: %m"); + break; + + case ARG_ROOT: + arg_root = optarg; + break; + + case 'c': + arg_cursor = optarg; + break; + + case ARG_AFTER_CURSOR: + arg_after_cursor = optarg; + break; + + case ARG_SHOW_CURSOR: + arg_show_cursor = true; + break; + + case ARG_HEADER: + arg_action = ACTION_PRINT_HEADER; + break; + + case ARG_VERIFY: + arg_action = ACTION_VERIFY; + break; + + case ARG_DISK_USAGE: + arg_action = ACTION_DISK_USAGE; + break; + + case ARG_VACUUM_SIZE: + r = parse_size(optarg, 1024, &arg_vacuum_size); + if (r < 0) { + log_error("Failed to parse vacuum size: %s", optarg); + return r; + } + + arg_action = ACTION_VACUUM; + break; + + case ARG_VACUUM_TIME: + r = parse_sec(optarg, &arg_vacuum_time); + if (r < 0) { + log_error("Failed to parse vacuum time: %s", optarg); + return r; + } + + arg_action = ACTION_VACUUM; + break; + +#ifdef HAVE_GCRYPT + case ARG_FORCE: + arg_force = true; + break; + + case ARG_SETUP_KEYS: + arg_action = ACTION_SETUP_KEYS; + break; + + + case ARG_VERIFY_KEY: + arg_action = ACTION_VERIFY; + arg_verify_key = optarg; + arg_merge = false; + break; + + case ARG_INTERVAL: + r = parse_sec(optarg, &arg_interval); + if (r < 0 || arg_interval <= 0) { + log_error("Failed to parse sealing key change interval: %s", optarg); + return -EINVAL; + } + break; +#else + case ARG_SETUP_KEYS: + case ARG_VERIFY_KEY: + case ARG_INTERVAL: + case ARG_FORCE: + log_error("Forward-secure sealing not available."); + return -ENOTSUP; +#endif + + case 'p': { + const char *dots; + + dots = strstr(optarg, ".."); + if (dots) { + char *a; + int from, to, i; + + /* a range */ + a = strndup(optarg, dots - optarg); + if (!a) + return log_oom(); + + from = log_level_from_string(a); + to = log_level_from_string(dots + 2); + free(a); + + if (from < 0 || to < 0) { + log_error("Failed to parse log level range %s", optarg); + return -EINVAL; + } + + arg_priorities = 0; + + if (from < to) { + for (i = from; i <= to; i++) + arg_priorities |= 1 << i; + } else { + for (i = to; i <= from; i++) + arg_priorities |= 1 << i; + } + + } else { + int p, i; + + p = log_level_from_string(optarg); + if (p < 0) { + log_error("Unknown log level %s", optarg); + return -EINVAL; + } + + arg_priorities = 0; + + for (i = 0; i <= p; i++) + arg_priorities |= 1 << i; + } + + break; + } + + case ARG_SINCE: + r = parse_timestamp(optarg, &arg_since); + if (r < 0) { + log_error("Failed to parse timestamp: %s", optarg); + return -EINVAL; + } + arg_since_set = true; + break; + + case ARG_UNTIL: + r = parse_timestamp(optarg, &arg_until); + if (r < 0) { + log_error("Failed to parse timestamp: %s", optarg); + return -EINVAL; + } + arg_until_set = true; + break; + + case 't': + r = strv_extend(&arg_syslog_identifier, optarg); + if (r < 0) + return log_oom(); + break; + + case 'u': + r = strv_extend(&arg_system_units, optarg); + if (r < 0) + return log_oom(); + break; + + case ARG_USER_UNIT: + r = strv_extend(&arg_user_units, optarg); + if (r < 0) + return log_oom(); + break; + + case 'F': + arg_field = optarg; + break; + + case 'x': + arg_catalog = true; + break; + + case ARG_LIST_CATALOG: + arg_action = ACTION_LIST_CATALOG; + break; + + case ARG_DUMP_CATALOG: + arg_action = ACTION_DUMP_CATALOG; + break; + + case ARG_UPDATE_CATALOG: + arg_action = ACTION_UPDATE_CATALOG; + break; + + case 'r': + arg_reverse = true; + break; + + case ARG_UTC: + arg_utc = true; + break; + + case ARG_FLUSH: + arg_action = ACTION_FLUSH; break; case '?': return -EINVAL; default: - log_error("Unknown option code %c", c); - return -EINVAL; + assert_not_reached("Unhandled option"); } - } - if (arg_follow && !arg_no_tail) + if (arg_follow && !arg_no_tail && !arg_since && arg_lines == ARG_LINES_DEFAULT) arg_lines = 10; + if (!!arg_directory + !!arg_file + !!arg_machine > 1) { + log_error("Please specify either -D/--directory= or --file= or -M/--machine=, not more than one."); + return -EINVAL; + } + + if (arg_since_set && arg_until_set && arg_since > arg_until) { + log_error("--since= must be before --until=."); + return -EINVAL; + } + + if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) { + log_error("Please specify only one of --since=, --cursor=, and --after-cursor."); + return -EINVAL; + } + + if (arg_follow && arg_reverse) { + log_error("Please specify either --reverse= or --follow=, not both."); + return -EINVAL; + } + + if (arg_action != ACTION_SHOW && optind < argc) { + log_error("Extraneous arguments starting with '%s'", argv[optind]); + return -EINVAL; + } + return 1; } @@ -163,145 +747,1380 @@ static int generate_new_id128(void) { unsigned i; r = sd_id128_randomize(&id); - if (r < 0) { - log_error("Failed to generate ID: %s", strerror(-r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to generate ID: %m"); printf("As string:\n" SD_ID128_FORMAT_STR "\n\n" "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; } -int main(int argc, char *argv[]) { - int r, i, fd; - sd_journal *j = NULL; - unsigned line = 0; - bool need_seek = false; +static int add_matches(sd_journal *j, char **args) { + char **i; + bool have_term = false; - log_parse_environment(); - log_open(); + assert(j); - r = parse_argv(argc, argv); - if (r <= 0) - goto finish; + STRV_FOREACH(i, args) { + int r; - if (arg_new_id128) { - r = generate_new_id128(); - goto finish; - } + if (streq(*i, "+")) { + if (!have_term) + break; + r = sd_journal_add_disjunction(j); + have_term = false; - r = sd_journal_open(&j, 0); - if (r < 0) { - log_error("Failed to open journal: %s", strerror(-r)); - goto finish; - } + } else if (path_is_absolute(*i)) { + _cleanup_free_ char *p, *t = NULL, *t2 = NULL; + const char *path; + _cleanup_free_ char *interpreter = NULL; + struct stat st; - for (i = optind; i < argc; i++) { - r = sd_journal_add_match(j, argv[i], strlen(argv[i])); - if (r < 0) { - log_error("Failed to add match: %s", strerror(-r)); - goto finish; + 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 (S_ISREG(st.st_mode) && (0111 & st.st_mode)) { + if (executable_is_script(path, &interpreter) > 0) { + _cleanup_free_ char *comm; + + comm = strndup(basename(path), 15); + if (!comm) + return log_oom(); + + t = strappend("_COMM=", comm); + + /* Append _EXE only if the interpreter is not a link. + Otherwise, it might be outdated often. */ + if (lstat(interpreter, &st) == 0 && + !S_ISLNK(st.st_mode)) { + t2 = strappend("_EXE=", interpreter); + if (!t2) + return log_oom(); + } + } else + t = strappend("_EXE=", path); + } else if (S_ISCHR(st.st_mode)) { + if (asprintf(&t, "_KERNEL_DEVICE=c%u:%u", + major(st.st_rdev), + minor(st.st_rdev)) < 0) + return -ENOMEM; + } else if (S_ISBLK(st.st_mode)) { + if (asprintf(&t, "_KERNEL_DEVICE=b%u:%u", + major(st.st_rdev), + minor(st.st_rdev)) < 0) + return -ENOMEM; + } else { + log_error("File is neither a device node, nor regular file, nor executable: %s", *i); + return -EINVAL; + } + + if (!t) + return log_oom(); + + r = sd_journal_add_match(j, t, 0); + if (t2) + r = sd_journal_add_match(j, t2, 0); + have_term = true; + + } else { + r = sd_journal_add_match(j, *i, 0); + have_term = true; } + + if (r < 0) + return log_error_errno(r, "Failed to add match '%s': %m", *i); } - fd = sd_journal_get_fd(j); - if (fd < 0) { - log_error("Failed to get wakeup fd: %s", strerror(-fd)); - goto finish; + if (!strv_isempty(args) && !have_term) { + log_error("\"+\" can only be used between terms"); + return -EINVAL; } - if (arg_lines >= 0) { - r = sd_journal_seek_tail(j); - if (r < 0) { - log_error("Failed to seek to tail: %s", strerror(-r)); - goto finish; - } + return 0; +} + +static int boot_id_cmp(const void *a, const void *b) { + uint64_t _a, _b; + + _a = ((const boot_id_t *)a)->first; + _b = ((const boot_id_t *)b)->first; + + return _a < _b ? -1 : (_a > _b ? 1 : 0); +} + +static int get_boots(sd_journal *j, + boot_id_t **boots, + unsigned int *count, + boot_id_t *query_ref_boot) { + int r; + const void *data; + size_t length, allocated = 0; + + assert(j); + assert(boots); + assert(count); + + r = sd_journal_query_unique(j, "_BOOT_ID"); + if (r < 0) + return r; + + *count = 0; + SD_JOURNAL_FOREACH_UNIQUE(j, data, length) { + boot_id_t *id; + + assert(startswith(data, "_BOOT_ID=")); + + if (!GREEDY_REALLOC(*boots, allocated, *count + 1)) + return log_oom(); + + id = *boots + *count; + + r = sd_id128_from_string(((const char *)data) + strlen("_BOOT_ID="), &id->id); + if (r < 0) + continue; + + r = sd_journal_add_match(j, data, length); + if (r < 0) + return r; - r = sd_journal_previous_skip(j, arg_lines); - } else { r = sd_journal_seek_head(j); - if (r < 0) { - log_error("Failed to seek to head: %s", strerror(-r)); - goto finish; - } + if (r < 0) + return r; r = sd_journal_next(j); - } + if (r < 0) + return r; + else if (r == 0) + goto flush; + + r = sd_journal_get_realtime_usec(j, &id->first); + if (r < 0) + return r; + + if (query_ref_boot) { + id->last = 0; + if (sd_id128_equal(id->id, query_ref_boot->id)) + *query_ref_boot = *id; + } else { + r = sd_journal_seek_tail(j); + if (r < 0) + return r; - if (r < 0) { - log_error("Failed to iterate through journal: %s", strerror(-r)); - goto finish; - } + r = sd_journal_previous(j); + if (r < 0) + return r; + else if (r == 0) + goto flush; - if (!arg_no_pager && !arg_follow) { - columns(); - pager_open(); - } + r = sd_journal_get_realtime_usec(j, &id->last); + if (r < 0) + return r; + } - if (arg_output == OUTPUT_JSON) { - fputc('[', stdout); - fflush(stdout); + (*count)++; + flush: + sd_journal_flush_matches(j); } - for (;;) { - for (;;) { - if (need_seek) { - r = sd_journal_next(j); - if (r < 0) { - log_error("Failed to iterate through journal: %s", strerror(-r)); - goto finish; - } - } + qsort_safe(*boots, *count, sizeof(boot_id_t), boot_id_cmp); + return 0; +} - if (r == 0) - break; +static int list_boots(sd_journal *j) { + int r, w, i; + unsigned int count; + boot_id_t *id; + _cleanup_free_ boot_id_t *all_ids = NULL; - line ++; + assert(j); - r = output_journal(j, arg_output, line, arg_show_all); - if (r < 0) - goto finish; + r = get_boots(j, &all_ids, &count, NULL); + if (r < 0) + return r; - need_seek = true; - } + pager_open_if_enabled(); - if (!arg_follow) - break; + /* numbers are one less, but we need an extra char for the sign */ + w = DECIMAL_STR_WIDTH(count - 1) + 1; - r = fd_wait_for_event(fd, POLLIN); - if (r < 0) { - log_error("Couldn't wait for event: %s", strerror(-r)); - goto finish; - } + for (id = all_ids, i = 0; id < all_ids + count; id++, i++) { + char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; - r = sd_journal_process(j); - if (r < 0) { - log_error("Failed to process: %s", strerror(-r)); - goto finish; - } + printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n", + w, i - count + 1, + SD_ID128_FORMAT_VAL(id->id), + format_timestamp_maybe_utc(a, sizeof(a), id->first), + format_timestamp_maybe_utc(b, sizeof(b), id->last)); } - if (arg_output == OUTPUT_JSON) - fputs("\n]\n", stdout); + return 0; +} + +static int get_boot_id_by_offset(sd_journal *j, sd_id128_t *boot_id, int offset) { + int r; + unsigned int count; + boot_id_t ref_boot_id = {}, *id; + _cleanup_free_ boot_id_t *all_ids = NULL; -finish: - if (j) - sd_journal_close(j); + assert(j); + assert(boot_id); - pager_close(); + ref_boot_id.id = *boot_id; + r = get_boots(j, &all_ids, &count, &ref_boot_id); + if (r < 0) + return r; + + if (sd_id128_equal(*boot_id, SD_ID128_NULL)) { + if (offset > (int) count || offset <= -(int)count) + return -EADDRNOTAVAIL; + + *boot_id = all_ids[(offset <= 0)*count + offset - 1].id; + } else { + id = bsearch(&ref_boot_id, all_ids, count, sizeof(boot_id_t), boot_id_cmp); + + if (!id || + offset <= 0 ? (id - all_ids) + offset < 0 : + (id - all_ids) + offset >= (int) count) + return -EADDRNOTAVAIL; + + *boot_id = (id + offset)->id; + } + + return 0; +} + +static int add_boot(sd_journal *j) { + char match[9+32+1] = "_BOOT_ID="; + int r; + + assert(j); + + if (!arg_boot) + return 0; + + if (arg_boot_offset == 0 && sd_id128_equal(arg_boot_id, SD_ID128_NULL)) + return add_match_this_boot(j, arg_machine); + + r = get_boot_id_by_offset(j, &arg_boot_id, arg_boot_offset); + if (r < 0) { + if (sd_id128_equal(arg_boot_id, SD_ID128_NULL)) + log_error_errno(r, "Failed to look up boot %+i: %m", arg_boot_offset); + else + log_error("Failed to look up boot ID "SD_ID128_FORMAT_STR"%+i: %s", + SD_ID128_FORMAT_VAL(arg_boot_id), arg_boot_offset, strerror(-r)); + return r; + } + + sd_id128_to_string(arg_boot_id, match + 9); + + r = sd_journal_add_match(j, match, sizeof(match) - 1); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + + r = sd_journal_add_conjunction(j); + if (r < 0) + return r; + + return 0; +} + +static int add_dmesg(sd_journal *j) { + int r; + assert(j); + + if (!arg_dmesg) + return 0; + + r = sd_journal_add_match(j, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel")); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + + r = sd_journal_add_conjunction(j); + if (r < 0) + return r; + + return 0; +} + +static int get_possible_units(sd_journal *j, + const char *fields, + char **patterns, + Set **units) { + _cleanup_set_free_free_ Set *found; + const char *field; + int r; + + found = set_new(&string_hash_ops); + if (!found) + return log_oom(); + + NULSTR_FOREACH(field, fields) { + const void *data; + size_t size; + + r = sd_journal_query_unique(j, field); + if (r < 0) + return r; + + SD_JOURNAL_FOREACH_UNIQUE(j, data, size) { + char **pattern, *eq; + size_t prefix; + _cleanup_free_ char *u = NULL; + + eq = memchr(data, '=', size); + if (eq) + prefix = eq - (char*) data + 1; + else + prefix = 0; + + u = strndup((char*) data + prefix, size - prefix); + if (!u) + return log_oom(); + + STRV_FOREACH(pattern, patterns) + if (fnmatch(*pattern, u, FNM_NOESCAPE) == 0) { + log_debug("Matched %s with pattern %s=%s", u, field, *pattern); + + r = set_consume(found, u); + u = NULL; + if (r < 0 && r != -EEXIST) + return r; + + break; + } + } + } + + *units = found; + found = NULL; + return 0; +} + +/* This list is supposed to return the superset of unit names + * possibly matched by rules added with add_matches_for_unit... */ +#define SYSTEM_UNITS \ + "_SYSTEMD_UNIT\0" \ + "COREDUMP_UNIT\0" \ + "UNIT\0" \ + "OBJECT_SYSTEMD_UNIT\0" \ + "_SYSTEMD_SLICE\0" + +/* ... and add_matches_for_user_unit */ +#define USER_UNITS \ + "_SYSTEMD_USER_UNIT\0" \ + "USER_UNIT\0" \ + "COREDUMP_USER_UNIT\0" \ + "OBJECT_SYSTEMD_USER_UNIT\0" + +static int add_units(sd_journal *j) { + _cleanup_strv_free_ char **patterns = NULL; + int r, count = 0; + char **i; + + assert(j); + + STRV_FOREACH(i, arg_system_units) { + _cleanup_free_ char *u = NULL; + + u = unit_name_mangle(*i, MANGLE_GLOB); + if (!u) + return log_oom(); + + if (string_is_glob(u)) { + r = strv_push(&patterns, u); + if (r < 0) + return r; + u = NULL; + } else { + r = add_matches_for_unit(j, u); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + count ++; + } + } + + if (!strv_isempty(patterns)) { + _cleanup_set_free_free_ Set *units = NULL; + Iterator it; + char *u; + + r = get_possible_units(j, SYSTEM_UNITS, patterns, &units); + if (r < 0) + return r; + + SET_FOREACH(u, units, it) { + r = add_matches_for_unit(j, u); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + count ++; + } + } + + strv_free(patterns); + patterns = NULL; + + STRV_FOREACH(i, arg_user_units) { + _cleanup_free_ char *u = NULL; + + u = unit_name_mangle(*i, MANGLE_GLOB); + if (!u) + return log_oom(); + + if (string_is_glob(u)) { + r = strv_push(&patterns, u); + if (r < 0) + return r; + u = NULL; + } else { + r = add_matches_for_user_unit(j, u, getuid()); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + count ++; + } + } + + if (!strv_isempty(patterns)) { + _cleanup_set_free_free_ Set *units = NULL; + Iterator it; + char *u; + + r = get_possible_units(j, USER_UNITS, patterns, &units); + if (r < 0) + return r; + + SET_FOREACH(u, units, it) { + r = add_matches_for_user_unit(j, u, getuid()); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + count ++; + } + } + + /* Complain if the user request matches but nothing whatsoever was + * found, since otherwise everything would be matched. */ + if (!(strv_isempty(arg_system_units) && strv_isempty(arg_user_units)) && count == 0) + return -ENODATA; + + r = sd_journal_add_conjunction(j); + if (r < 0) + return r; + + return 0; +} + +static int add_priorities(sd_journal *j) { + char match[] = "PRIORITY=0"; + int i, r; + assert(j); + + if (arg_priorities == 0xFF) + return 0; + + for (i = LOG_EMERG; i <= LOG_DEBUG; i++) + if (arg_priorities & (1 << i)) { + match[sizeof(match)-2] = '0' + i; + + r = sd_journal_add_match(j, match, strlen(match)); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + } + + r = sd_journal_add_conjunction(j); + if (r < 0) + return r; + + return 0; +} + + +static int add_syslog_identifier(sd_journal *j) { + int r; + char **i; + + assert(j); + + STRV_FOREACH(i, arg_syslog_identifier) { + char *u; + + u = strappenda("SYSLOG_IDENTIFIER=", *i); + r = sd_journal_add_match(j, u, 0); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + } + + r = sd_journal_add_conjunction(j); + if (r < 0) + return r; + + return 0; +} + +static int setup_keys(void) { +#ifdef HAVE_GCRYPT + size_t mpk_size, seed_size, state_size, i; + uint8_t *mpk, *seed, *state; + ssize_t l; + int fd = -1, r, attr = 0; + sd_id128_t machine, boot; + char *p = NULL, *k = NULL; + struct FSSHeader h; + uint64_t n; + 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 || !S_ISDIR(st.st_mode)) { + log_error("%s is not a directory, must be using persistent logging for FSS.", + "/var/log/journal"); + return r < 0 ? -errno : -ENOTDIR; + } + + r = sd_id128_get_machine(&machine); + if (r < 0) + return log_error_errno(r, "Failed to get machine ID: %m"); + + r = sd_id128_get_boot(&boot); + if (r < 0) + return log_error_errno(r, "Failed to get boot ID: %m"); + + if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss", + SD_ID128_FORMAT_VAL(machine)) < 0) + return log_oom(); + + if (access(p, F_OK) >= 0) { + if (arg_force) { + r = unlink(p); + if (r < 0) { + log_error_errno(errno, "unlink(\"%s\") failed: %m", p); + r = -errno; + goto finish; + } + } else { + log_error("Sealing key file %s exists already. (--force to recreate)", p); + r = -EEXIST; + goto finish; + } + } + + if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX", + SD_ID128_FORMAT_VAL(machine)) < 0) { + r = log_oom(); + goto finish; + } + + mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR); + mpk = alloca(mpk_size); + + seed_size = FSPRG_RECOMMENDED_SEEDLEN; + seed = alloca(seed_size); + + state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR); + state = alloca(state_size); + + fd = open("/dev/random", O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (fd < 0) { + log_error_errno(errno, "Failed to open /dev/random: %m"); + r = -errno; + goto finish; + } + + log_info("Generating seed..."); + l = loop_read(fd, seed, seed_size, true); + if (l < 0 || (size_t) l != seed_size) { + log_error_errno(EIO, "Failed to read random seed: %m"); + r = -EIO; + goto finish; + } + + log_info("Generating key pair..."); + FSPRG_GenMK(NULL, mpk, seed, seed_size, FSPRG_RECOMMENDED_SECPAR); + + log_info("Generating sealing key..."); + FSPRG_GenState0(state, mpk, seed, seed_size); + + assert(arg_interval > 0); + + n = now(CLOCK_REALTIME); + n /= arg_interval; + + safe_close(fd); + fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC); + if (fd < 0) { + log_error_errno(errno, "Failed to open %s: %m", k); + r = -errno; + goto finish; + } + + /* 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"); + + zero(h); + memcpy(h.signature, "KSHHRHLP", 8); + h.machine_id = machine; + h.boot_id = boot; + h.header_size = htole64(sizeof(h)); + h.start_usec = htole64(n * arg_interval); + h.interval_usec = htole64(arg_interval); + 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; + 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; + goto finish; + } + + if (link(k, p) < 0) { + log_error_errno(errno, "Failed to link file: %m"); + r = -errno; + goto finish; + } + + 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" + "the following local file. This key file is automatically updated when the\n" + "sealing key is advanced. It should not be used on multiple hosts.\n" + "\n" + "\t%s\n" + "\n" + "Please write down the following " ANSI_HIGHLIGHT_ON "secret verification key" ANSI_HIGHLIGHT_OFF ". It should be stored\n" + "at a safe location and should not be saved locally on disk.\n" + "\n\t" ANSI_HIGHLIGHT_RED_ON, p); + fflush(stderr); + } + for (i = 0; i < seed_size; i++) { + if (i > 0 && i % 3 == 0) + putchar('-'); + printf("%02x", ((uint8_t*) seed)[i]); + } + + printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval); + + if (on_tty()) { + char tsb[FORMAT_TIMESPAN_MAX], *hn; + + fprintf(stderr, + ANSI_HIGHLIGHT_OFF "\n" + "The sealing key is automatically changed every %s.\n", + format_timespan(tsb, sizeof(tsb), arg_interval, 0)); + + hn = gethostname_malloc(); + + if (hn) { + hostname_cleanup(hn, false); + fprintf(stderr, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR ".\n", hn, SD_ID128_FORMAT_VAL(machine)); + } else + fprintf(stderr, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(machine)); + +#ifdef HAVE_QRENCODE + /* If this is not an UTF-8 system don't print any QR codes */ + 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); + } +#endif + free(hn); + } + + r = 0; + +finish: + safe_close(fd); + + if (k) { + unlink(k); + free(k); + } + + free(p); + + return r; +#else + log_error("Forward-secure sealing not available."); + return -ENOTSUP; +#endif +} + +static int verify(sd_journal *j) { + int r = 0; + Iterator i; + JournalFile *f; + + assert(j); + + log_show_color(true); + + ORDERED_HASHMAP_FOREACH(f, j->files, i) { + int k; + usec_t first, validated, last; + +#ifdef HAVE_GCRYPT + if (!arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) + log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f->path); +#endif + + k = journal_file_verify(f, arg_verify_key, &first, &validated, &last, true); + if (k == -EINVAL) { + /* If the key was invalid give up right-away. */ + return k; + } else if (k < 0) { + log_warning("FAIL: %s (%s)", f->path, strerror(-k)); + r = k; + } else { + char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX], c[FORMAT_TIMESPAN_MAX]; + log_info("PASS: %s", f->path); + + if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) { + if (validated > 0) { + log_info("=> Validated from %s to %s, final %s entries not sealed.", + format_timestamp_maybe_utc(a, sizeof(a), first), + format_timestamp_maybe_utc(b, sizeof(b), validated), + format_timespan(c, sizeof(c), last > validated ? last - validated : 0, 0)); + } else if (last > 0) + log_info("=> No sealing yet, %s of entries not sealed.", + format_timespan(c, sizeof(c), last - first, 0)); + else + log_info("=> No sealing yet, no entries in file."); + } + } + } + + return r; +} + +#ifdef HAVE_ACL +static int access_check_var_log_journal(sd_journal *j) { + _cleanup_strv_free_ char **g = NULL; + bool have_access; + int r; + + assert(j); + + have_access = in_group("systemd-journal") > 0; + + if (!have_access) { + /* Let's enumerate all groups from the default ACL of + * the directory, which generally should allow access + * to most journal files too */ + r = search_acl_groups(&g, "/var/log/journal/", &have_access); + if (r < 0) + return r; + } + + if (!have_access) { + + if (strv_isempty(g)) + log_notice("Hint: You are currently not seeing messages from other users and the system.\n" + " Users in the 'systemd-journal' group can see all messages. Pass -q to\n" + " turn off this notice."); + else { + _cleanup_free_ char *s = NULL; + + r = strv_extend(&g, "systemd-journal"); + if (r < 0) + return log_oom(); + + strv_sort(g); + strv_uniq(g); + + s = strv_join(g, "', '"); + if (!s) + return log_oom(); + + log_notice("Hint: You are currently not seeing messages from other users and the system.\n" + " Users in the groups '%s' can see all messages.\n" + " Pass -q to turn off this notice.", s); + } + } + + return 0; +} +#endif + +static int access_check(sd_journal *j) { + Iterator it; + void *code; + int r = 0; + + assert(j); + + if (set_isempty(j->errors)) { + if (ordered_hashmap_isempty(j->files)) + log_notice("No journal files were found."); + return 0; + } + + if (set_contains(j->errors, INT_TO_PTR(-EACCES))) { +#ifdef HAVE_ACL + /* If /var/log/journal doesn't even exist, + * unprivileged users have no access at all */ + if (access("/var/log/journal", F_OK) < 0 && + geteuid() != 0 && + in_group("systemd-journal") <= 0) { + log_error("Unprivileged users cannot access messages, unless persistent log storage is\n" + "enabled. Users in the 'systemd-journal' group may always access messages."); + return -EACCES; + } + + /* If /var/log/journal exists, try to pring a nice + notice if the user lacks access to it */ + if (!arg_quiet && geteuid() != 0) { + r = access_check_var_log_journal(j); + if (r < 0) + return r; + } +#else + if (geteuid() != 0 && in_group("systemd-journal") <= 0) { + log_error("Unprivileged users cannot access messages. Users in the 'systemd-journal' group\n" + "group may access messages."); + return -EACCES; + } +#endif + + if (ordered_hashmap_isempty(j->files)) { + log_error("No journal files were opened due to insufficient permissions."); + r = -EACCES; + } + } + + SET_FOREACH(code, j->errors, it) { + int err; + + err = -PTR_TO_INT(code); + assert(err > 0); + + if (err != EACCES) + log_warning_errno(err, "Error was encountered while opening journal files: %m"); + } + + return r; +} + +static int flush_to_var(void) { + _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_bus_close_unref_ sd_bus *bus = NULL; + _cleanup_close_ int watch_fd = -1; + int r; + + /* Quick exit */ + if (access("/run/systemd/journal/flushed", F_OK) >= 0) + return 0; + + /* OK, let's actually do the full logic, send SIGUSR1 to the + * daemon and set up inotify to wait for the flushed file to appear */ + r = bus_open_system_systemd(&bus); + if (r < 0) + return log_error_errno(r, "Failed to get D-Bus connection: %m"); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "KillUnit", + &error, + NULL, + "ssi", "systemd-journald.service", "main", SIGUSR1); + if (r < 0) { + log_error("Failed to kill journal service: %s", bus_error_message(&error, r)); + return r; + } + + 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; + } + + 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; + } + + 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; + } + + r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY); + if (r < 0) + return log_error_errno(r, "Failed to wait for event: %m"); + + r = flush_fd(watch_fd); + if (r < 0) + return log_error_errno(r, "Failed to flush inotify events: %m"); + } + + return 0; +} + +int main(int argc, char *argv[]) { + int r; + _cleanup_journal_close_ sd_journal *j = NULL; + bool need_seek = false; + sd_id128_t previous_boot_id; + bool previous_boot_id_valid = false, first_line = true; + int n_shown = 0; + bool ellipsized = false; + + setlocale(LC_ALL, ""); + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + signal(SIGWINCH, columns_lines_cache_reset); + + if (arg_action == ACTION_NEW_ID128) { + r = generate_new_id128(); + goto finish; + } + + if (arg_action == ACTION_FLUSH) { + r = flush_to_var(); + goto finish; + } + + if (arg_action == ACTION_SETUP_KEYS) { + r = setup_keys(); + goto finish; + } + + if (arg_action == ACTION_UPDATE_CATALOG || + arg_action == ACTION_LIST_CATALOG || + arg_action == ACTION_DUMP_CATALOG) { + + _cleanup_free_ char *database; + + database = path_join(arg_root, CATALOG_DATABASE, NULL); + if (!database) { + r = log_oom(); + goto finish; + } + + if (arg_action == ACTION_UPDATE_CATALOG) { + r = catalog_update(database, arg_root, catalog_file_dirs); + if (r < 0) + log_error_errno(r, "Failed to list catalog: %m"); + } else { + bool oneline = arg_action == ACTION_LIST_CATALOG; + + if (optind < argc) + r = catalog_list_items(stdout, database, + oneline, argv + optind); + else + r = catalog_list(stdout, database, oneline); + if (r < 0) + log_error_errno(r, "Failed to list catalog: %m"); + } + + goto finish; + } + + if (arg_directory) + r = sd_journal_open_directory(&j, arg_directory, arg_journal_type); + else if (arg_file) + r = sd_journal_open_files(&j, (const char**) arg_file, 0); + else if (arg_machine) + r = sd_journal_open_container(&j, arg_machine, 0); + else + r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type); + if (r < 0) { + log_error_errno(r, "Failed to open %s: %m", + arg_directory ? arg_directory : arg_file ? "files" : "journal"); + return EXIT_FAILURE; + } + + r = access_check(j); + if (r < 0) + return EXIT_FAILURE; + + if (arg_action == ACTION_VERIFY) { + r = verify(j); + goto finish; + } + + if (arg_action == ACTION_PRINT_HEADER) { + journal_print_header(j); + return EXIT_SUCCESS; + } + + if (arg_action == ACTION_DISK_USAGE) { + uint64_t bytes = 0; + char sbytes[FORMAT_BYTES_MAX]; + + r = sd_journal_get_usage(j, &bytes); + if (r < 0) + return EXIT_FAILURE; + + printf("Archived and active journals take up %s on disk.\n", + format_bytes(sbytes, sizeof(sbytes), bytes)); + return EXIT_SUCCESS; + } + + if (arg_action == ACTION_VACUUM) { + Directory *d; + Iterator i; + + HASHMAP_FOREACH(d, j->directories_by_path, i) { + int q; + + if (d->is_root) + continue; + + q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_time, NULL, true); + if (q < 0) { + log_error_errno(q, "Failed to vacuum: %m"); + r = q; + } + } + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; + } + + if (arg_action == ACTION_LIST_BOOTS) { + r = list_boots(j); + goto finish; + } + + /* add_boot() must be called first! + * It may need to seek the journal to find parent boot IDs. */ + r = add_boot(j); + if (r < 0) + return EXIT_FAILURE; + + r = add_dmesg(j); + if (r < 0) + return EXIT_FAILURE; + + r = add_units(j); + strv_free(arg_system_units); + strv_free(arg_user_units); + + if (r < 0) { + log_error_errno(r, "Failed to add filter for units: %m"); + return EXIT_FAILURE; + } + + r = add_syslog_identifier(j); + if (r < 0) { + log_error_errno(r, "Failed to add filter for syslog identifiers: %m"); + return EXIT_FAILURE; + } + + r = add_priorities(j); + if (r < 0) { + log_error_errno(r, "Failed to add filter for priorities: %m"); + return EXIT_FAILURE; + } + + r = add_matches(j, argv + optind); + if (r < 0) { + log_error_errno(r, "Failed to add filters: %m"); + return EXIT_FAILURE; + } + + if (_unlikely_(log_get_max_level() >= LOG_PRI(LOG_DEBUG))) { + _cleanup_free_ char *filter; + + filter = journal_make_match_string(j); + log_debug("Journal filter: %s", filter); + } + + if (arg_field) { + const void *data; + size_t size; + + r = sd_journal_set_data_threshold(j, 0); + if (r < 0) { + log_error("Failed to unset data size threshold"); + return EXIT_FAILURE; + } + + r = sd_journal_query_unique(j, arg_field); + if (r < 0) { + log_error_errno(r, "Failed to query unique data objects: %m"); + return EXIT_FAILURE; + } + + SD_JOURNAL_FOREACH_UNIQUE(j, data, size) { + const void *eq; + + if (arg_lines >= 0 && n_shown >= arg_lines) + break; + + eq = memchr(data, '=', size); + if (eq) + printf("%.*s\n", (int) (size - ((const uint8_t*) eq - (const uint8_t*) data + 1)), (const char*) eq + 1); + else + printf("%.*s\n", (int) size, (const char*) data); + + n_shown ++; + } + + return EXIT_SUCCESS; + } + + /* Opening the fd now means the first sd_journal_wait() will actually wait */ + if (arg_follow) { + r = sd_journal_get_fd(j); + if (r < 0) + return EXIT_FAILURE; + } + + if (arg_cursor || arg_after_cursor) { + r = sd_journal_seek_cursor(j, arg_cursor ?: arg_after_cursor); + if (r < 0) { + log_error_errno(r, "Failed to seek to cursor: %m"); + return EXIT_FAILURE; + } + if (!arg_reverse) + r = sd_journal_next_skip(j, 1 + !!arg_after_cursor); + else + r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor); + + if (arg_after_cursor && r < 2 && !arg_follow) + /* We couldn't find the next entry after the cursor. */ + arg_lines = 0; + + } else if (arg_since_set && !arg_reverse) { + r = sd_journal_seek_realtime_usec(j, arg_since); + if (r < 0) { + log_error_errno(r, "Failed to seek to date: %m"); + return EXIT_FAILURE; + } + r = sd_journal_next(j); + + } else if (arg_until_set && arg_reverse) { + r = sd_journal_seek_realtime_usec(j, arg_until); + if (r < 0) { + log_error_errno(r, "Failed to seek to date: %m"); + return EXIT_FAILURE; + } + r = sd_journal_previous(j); + + } else if (arg_lines >= 0) { + r = sd_journal_seek_tail(j); + if (r < 0) { + log_error_errno(r, "Failed to seek to tail: %m"); + return EXIT_FAILURE; + } + + r = sd_journal_previous_skip(j, arg_lines); + + } else if (arg_reverse) { + r = sd_journal_seek_tail(j); + if (r < 0) { + log_error_errno(r, "Failed to seek to tail: %m"); + return EXIT_FAILURE; + } + + r = sd_journal_previous(j); + + } else { + r = sd_journal_seek_head(j); + if (r < 0) { + log_error_errno(r, "Failed to seek to head: %m"); + return EXIT_FAILURE; + } + + r = sd_journal_next(j); + } + + if (r < 0) { + log_error_errno(r, "Failed to iterate through journal: %m"); + return EXIT_FAILURE; + } + + if (!arg_follow) + pager_open_if_enabled(); + + if (!arg_quiet) { + usec_t start, end; + char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX]; + + r = sd_journal_get_cutoff_realtime_usec(j, &start, &end); + if (r < 0) { + log_error_errno(r, "Failed to get cutoff: %m"); + goto finish; + } + + if (r > 0) { + if (arg_follow) + printf("-- Logs begin at %s. --\n", + format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start)); + else + printf("-- Logs begin at %s, end at %s. --\n", + format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start), + format_timestamp_maybe_utc(end_buf, sizeof(end_buf), end)); + } + } + + for (;;) { + while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) { + int flags; + + if (need_seek) { + if (!arg_reverse) + r = sd_journal_next(j); + else + r = sd_journal_previous(j); + if (r < 0) { + log_error_errno(r, "Failed to iterate through journal: %m"); + goto finish; + } + if (r == 0) + break; + } + + if (arg_until_set && !arg_reverse) { + usec_t usec; + + r = sd_journal_get_realtime_usec(j, &usec); + if (r < 0) { + log_error_errno(r, "Failed to determine timestamp: %m"); + goto finish; + } + if (usec > arg_until) + goto finish; + } + + if (arg_since_set && arg_reverse) { + usec_t usec; + + r = sd_journal_get_realtime_usec(j, &usec); + if (r < 0) { + log_error_errno(r, "Failed to determine timestamp: %m"); + goto finish; + } + if (usec < arg_since) + goto finish; + } + + if (!arg_merge && !arg_quiet) { + sd_id128_t boot_id; + + r = sd_journal_get_monotonic_usec(j, NULL, &boot_id); + if (r >= 0) { + if (previous_boot_id_valid && + !sd_id128_equal(boot_id, previous_boot_id)) + printf("%s-- Reboot --%s\n", + ansi_highlight(), ansi_highlight_off()); + + previous_boot_id = boot_id; + previous_boot_id_valid = true; + } + } + + flags = + arg_all * OUTPUT_SHOW_ALL | + arg_full * OUTPUT_FULL_WIDTH | + on_tty() * OUTPUT_COLOR | + arg_catalog * OUTPUT_CATALOG | + arg_utc * OUTPUT_UTC; + + r = output_journal(stdout, j, arg_output, 0, flags, &ellipsized); + need_seek = true; + if (r == -EADDRNOTAVAIL) + break; + else if (r < 0 || ferror(stdout)) + goto finish; + + n_shown++; + } + + if (!arg_follow) { + if (arg_show_cursor) { + _cleanup_free_ char *cursor = NULL; + + r = sd_journal_get_cursor(j, &cursor); + if (r < 0 && r != -EADDRNOTAVAIL) + log_error_errno(r, "Failed to get cursor: %m"); + else if (r >= 0) + printf("-- cursor: %s\n", cursor); + } + + break; + } + + r = sd_journal_wait(j, (uint64_t) -1); + if (r < 0) { + log_error_errno(r, "Couldn't wait for journal event: %m"); + goto finish; + } + + first_line = false; + } + +finish: + pager_close(); + + strv_free(arg_file); return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }