diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/journal/journalctl.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/journal/journalctl.c | 2761 |
1 files changed, 2761 insertions, 0 deletions
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c new file mode 100644 index 0000000..d81d522 --- /dev/null +++ b/src/journal/journalctl.c @@ -0,0 +1,2761 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <fcntl.h> +#include <fnmatch.h> +#include <getopt.h> +#include <linux/fs.h> +#include <signal.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/inotify.h> +#include <sys/stat.h> +#include <unistd.h> + +#include "sd-bus.h" +#include "sd-device.h" +#include "sd-journal.h" + +#include "acl-util.h" +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-util.h" +#include "catalog.h" +#include "chase-symlinks.h" +#include "chattr-util.h" +#include "def.h" +#include "dissect-image.h" +#include "fd-util.h" +#include "fileio.h" +#include "format-table.h" +#include "format-util.h" +#include "fs-util.h" +#include "fsprg.h" +#include "glob-util.h" +#include "hostname-util.h" +#include "id128-print.h" +#include "io-util.h" +#include "journal-def.h" +#include "journal-internal.h" +#include "journal-util.h" +#include "journal-vacuum.h" +#include "journal-verify.h" +#include "locale-util.h" +#include "log.h" +#include "logs-show.h" +#include "memory-util.h" +#include "mkdir.h" +#include "mount-util.h" +#include "mountpoint-util.h" +#include "nulstr-util.h" +#include "pager.h" +#include "parse-argument.h" +#include "parse-util.h" +#include "path-util.h" +#include "pcre2-util.h" +#include "pretty-print.h" +#include "qrcode-util.h" +#include "random-util.h" +#include "rlimit-util.h" +#include "set.h" +#include "sigbus.h" +#include "static-destruct.h" +#include "stdio-util.h" +#include "string-table.h" +#include "strv.h" +#include "syslog-util.h" +#include "terminal-util.h" +#include "tmpfile-util.h" +#include "unit-name.h" +#include "user-util.h" +#include "varlink.h" + +#define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE) +#define PROCESS_INOTIFY_INTERVAL 1024 /* Every 1,024 messages processed */ + +enum { + /* Special values for arg_lines */ + ARG_LINES_DEFAULT = -2, + ARG_LINES_ALL = -1, +}; + +static OutputMode arg_output = OUTPUT_SHORT; +static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF; +static bool arg_utc = false; +static bool arg_follow = false; +static bool arg_full = true; +static bool arg_all = false; +static PagerFlags arg_pager_flags = 0; +static int arg_lines = ARG_LINES_DEFAULT; +static bool arg_no_tail = false; +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 bool arg_no_hostname = false; +static const char *arg_cursor = NULL; +static const char *arg_cursor_file = 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 bool arg_file_stdin = false; +static int arg_priorities = 0xFF; +static Set *arg_facilities = NULL; +static char *arg_verify_key = NULL; +#if HAVE_GCRYPT +static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC; +static bool arg_force = false; +#endif +static usec_t arg_since = 0, arg_until = 0; +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 int arg_namespace_flags = 0; +static char *arg_root = NULL; +static char *arg_image = NULL; +static const char *arg_machine = NULL; +static const char *arg_namespace = NULL; +static uint64_t arg_vacuum_size = 0; +static uint64_t arg_vacuum_n_files = 0; +static usec_t arg_vacuum_time = 0; +static char **arg_output_fields = NULL; +static const char *arg_pattern = NULL; +static pcre2_code *arg_compiled_pattern = NULL; +static PatternCompileCase arg_case = PATTERN_COMPILE_CASE_AUTO; + +STATIC_DESTRUCTOR_REGISTER(arg_file, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_facilities, set_freep); +STATIC_DESTRUCTOR_REGISTER(arg_verify_key, freep); +STATIC_DESTRUCTOR_REGISTER(arg_syslog_identifier, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_system_units, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_user_units, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_root, freep); +STATIC_DESTRUCTOR_REGISTER(arg_image, freep); +STATIC_DESTRUCTOR_REGISTER(arg_output_fields, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_compiled_pattern, pattern_freep); + +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_RELINQUISH_VAR, + ACTION_SYNC, + ACTION_ROTATE, + ACTION_VACUUM, + ACTION_ROTATE_AND_VACUUM, + ACTION_LIST_FIELDS, + ACTION_LIST_FIELD_NAMES, +} arg_action = ACTION_SHOW; + +typedef struct BootId { + sd_id128_t id; + uint64_t first; + uint64_t last; + LIST_FIELDS(struct BootId, boot_list); +} BootId; + +static int add_matches_for_device(sd_journal *j, const char *devpath) { + _cleanup_(sd_device_unrefp) sd_device *device = NULL; + sd_device *d = NULL; + struct stat st; + int r; + + assert(j); + assert(devpath); + + if (!path_startswith(devpath, "/dev/")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Devpath does not start with /dev/"); + + if (stat(devpath, &st) < 0) + return log_error_errno(errno, "Couldn't stat file: %m"); + + r = sd_device_new_from_stat_rdev(&device, &st); + if (r < 0) + return log_error_errno(r, "Failed to get device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev)); + + for (d = device; d; ) { + _cleanup_free_ char *match = NULL; + const char *subsys, *sysname, *devnode; + sd_device *parent; + + r = sd_device_get_subsystem(d, &subsys); + if (r < 0) + goto get_parent; + + r = sd_device_get_sysname(d, &sysname); + if (r < 0) + goto get_parent; + + match = strjoin("_KERNEL_DEVICE=+", subsys, ":", sysname); + if (!match) + return log_oom(); + + r = sd_journal_add_match(j, match, 0); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + + if (sd_device_get_devname(d, &devnode) >= 0) { + _cleanup_free_ char *match1 = NULL; + + r = stat(devnode, &st); + if (r < 0) + return log_error_errno(r, "Failed to stat() device node \"%s\": %m", devnode); + + r = asprintf(&match1, "_KERNEL_DEVICE=%c%u:%u", S_ISBLK(st.st_mode) ? 'b' : 'c', major(st.st_rdev), minor(st.st_rdev)); + if (r < 0) + return log_oom(); + + r = sd_journal_add_match(j, match1, 0); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + } + +get_parent: + if (sd_device_get_parent(d, &parent) < 0) + break; + + d = parent; + } + + r = add_match_this_boot(j, arg_machine); + if (r < 0) + return log_error_errno(r, "Failed to add match for the current boot: %m"); + + return 0; +} + +static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) { + + if (arg_utc) + return format_timestamp_style(buf, l, t, TIMESTAMP_UTC); + + 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 (streq(x, "all")) { + *boot_id = SD_ID128_NULL; + *offset = 0; + return 0; + } else if (strlen(x) >= SD_ID128_STRING_MAX - 1) { + char *t; + + t = strndupa_safe(x, SD_ID128_STRING_MAX - 1); + r = sd_id128_from_string(t, &id); + if (r >= 0) + x += SD_ID128_STRING_MAX - 1; + + if (!IN_SET(*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 1; +} + +static int help_facilities(void) { + if (!arg_quiet) + puts("Available facilities:"); + + for (int i = 0; i < LOG_NFACILITIES; i++) { + _cleanup_free_ char *t = NULL; + + if (log_facility_unshifted_to_string_alloc(i, &t)) + return log_oom(); + puts(t); + } + + return 0; +} + +static int help(void) { + _cleanup_free_ char *link = NULL; + int r; + + pager_open(arg_pager_flags); + + r = terminal_urlify_man("journalctl", "1", &link); + if (r < 0) + return log_oom(); + + printf("%1$s [OPTIONS...] [MATCHES...]\n\n" + "%5$sQuery the journal.%6$s\n\n" + "%3$sSource Options:%4$s\n" + " --system Show the system journal\n" + " --user Show the user journal for the current user\n" + " -M --machine=CONTAINER Operate on local container\n" + " -m --merge Show entries from all available journals\n" + " -D --directory=PATH Show journal files from directory\n" + " --file=PATH Show journal file\n" + " --root=ROOT Operate on files below a root directory\n" + " --image=IMAGE Operate on files in filesystem image\n" + " --namespace=NAMESPACE Show journal data from specified journal namespace\n" + "\n%3$sFiltering Options:%4$s\n" + " -S --since=DATE Show entries not older than the specified date\n" + " -U --until=DATE Show entries not newer than the specified date\n" + " -c --cursor=CURSOR Show entries starting at the specified cursor\n" + " --after-cursor=CURSOR Show entries after the specified cursor\n" + " --cursor-file=FILE Show entries after cursor in FILE and update FILE\n" + " -b --boot[=ID] Show current boot or the specified boot\n" + " -u --unit=UNIT Show logs from the specified unit\n" + " --user-unit=UNIT Show logs from the specified user unit\n" + " -t --identifier=STRING Show entries with the specified syslog identifier\n" + " -p --priority=RANGE Show entries with the specified priority\n" + " --facility=FACILITY... Show entries with the specified facilities\n" + " -g --grep=PATTERN Show entries with MESSAGE matching PATTERN\n" + " --case-sensitive[=BOOL] Force case sensitive or insensitive matching\n" + " -k --dmesg Show kernel message log from the current boot\n" + "\n%3$sOutput Control Options:%4$s\n" + " -o --output=STRING Change journal output mode (short, short-precise,\n" + " short-iso, short-iso-precise, short-full,\n" + " short-monotonic, short-unix, verbose, export,\n" + " json, json-pretty, json-sse, json-seq, cat,\n" + " with-unit)\n" + " --output-fields=LIST Select fields to print in verbose/export/json modes\n" + " -n --lines[=INTEGER] Number of journal entries to show\n" + " -r --reverse Show the newest entries first\n" + " --show-cursor Print the cursor after all the entries\n" + " --utc Express time in Coordinated Universal Time (UTC)\n" + " -x --catalog Add message explanations where available\n" + " --no-hostname Suppress output of hostname field\n" + " --no-full Ellipsize fields\n" + " -a --all Show all fields, including long and unprintable\n" + " -f --follow Follow the journal\n" + " --no-tail Show all lines, even in follow mode\n" + " -q --quiet Do not show info messages and privilege warning\n" + "\n%3$sPager Control Options:%4$s\n" + " --no-pager Do not pipe output into a pager\n" + " -e --pager-end Immediately jump to the end in the pager\n" + "\n%3$sForward Secure Sealing (FSS) Options:%4$s\n" + " --interval=TIME Time interval for changing the FSS sealing key\n" + " --verify-key=KEY Specify FSS verification key\n" + " --force Override of the FSS key pair with --setup-keys\n" + "\n%3$sCommands:%4$s\n" + " -h --help Show this help text\n" + " --version Show package version\n" + " -N --fields List all field names currently used\n" + " -F --field=FIELD List all values that a specified field takes\n" + " --list-boots Show terse information about recorded boots\n" + " --disk-usage Show total disk usage of all journal files\n" + " --vacuum-size=BYTES Reduce disk usage below specified size\n" + " --vacuum-files=INT Leave only the specified number of journal files\n" + " --vacuum-time=TIME Remove journal files older than specified time\n" + " --verify Verify journal file consistency\n" + " --sync Synchronize unwritten journal messages to disk\n" + " --relinquish-var Stop logging to disk, log to temporary file system\n" + " --smart-relinquish-var Similar, but NOP if log directory is on root mount\n" + " --flush Flush all journal data from /run into /var\n" + " --rotate Request immediate rotation of the journal files\n" + " --header Show journal header information\n" + " --list-catalog Show all message IDs in the catalog\n" + " --dump-catalog Show entries in the message catalog\n" + " --update-catalog Update the message catalog database\n" + " --setup-keys Generate a new FSS key pair\n" + "\nSee the %2$s for details.\n", + program_invocation_short_name, + link, + ansi_underline(), + ansi_normal(), + ansi_highlight(), + ansi_normal()); + + return 0; +} + +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_THIS_BOOT, + ARG_LIST_BOOTS, + ARG_USER, + ARG_SYSTEM, + ARG_ROOT, + ARG_IMAGE, + ARG_HEADER, + ARG_FACILITY, + ARG_SETUP_KEYS, + ARG_FILE, + ARG_INTERVAL, + ARG_VERIFY, + ARG_VERIFY_KEY, + ARG_DISK_USAGE, + ARG_AFTER_CURSOR, + ARG_CURSOR_FILE, + ARG_SHOW_CURSOR, + ARG_USER_UNIT, + ARG_LIST_CATALOG, + ARG_DUMP_CATALOG, + ARG_UPDATE_CATALOG, + ARG_FORCE, + ARG_CASE_SENSITIVE, + ARG_UTC, + ARG_SYNC, + ARG_FLUSH, + ARG_RELINQUISH_VAR, + ARG_SMART_RELINQUISH_VAR, + ARG_ROTATE, + ARG_VACUUM_SIZE, + ARG_VACUUM_FILES, + ARG_VACUUM_TIME, + ARG_NO_HOSTNAME, + ARG_OUTPUT_FIELDS, + ARG_NAMESPACE, + }; + + static const struct option options[] = { + { "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 }, /* deprecated */ + { "quiet", no_argument, NULL, 'q' }, + { "merge", no_argument, NULL, 'm' }, + { "this-boot", no_argument, NULL, ARG_THIS_BOOT }, /* deprecated */ + { "boot", optional_argument, NULL, 'b' }, + { "list-boots", no_argument, NULL, ARG_LIST_BOOTS }, + { "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 }, + { "image", required_argument, NULL, ARG_IMAGE }, + { "header", no_argument, NULL, ARG_HEADER }, + { "identifier", required_argument, NULL, 't' }, + { "priority", required_argument, NULL, 'p' }, + { "facility", required_argument, NULL, ARG_FACILITY }, + { "grep", required_argument, NULL, 'g' }, + { "case-sensitive", optional_argument, NULL, ARG_CASE_SENSITIVE }, + { "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' }, + { "cursor-file", required_argument, NULL, ARG_CURSOR_FILE }, + { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR }, + { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR }, + { "since", required_argument, NULL, 'S' }, + { "until", required_argument, NULL, 'U' }, + { "unit", required_argument, NULL, 'u' }, + { "user-unit", required_argument, NULL, ARG_USER_UNIT }, + { "field", required_argument, NULL, 'F' }, + { "fields", no_argument, NULL, 'N' }, + { "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 }, + { "relinquish-var", no_argument, NULL, ARG_RELINQUISH_VAR }, + { "smart-relinquish-var", no_argument, NULL, ARG_SMART_RELINQUISH_VAR }, + { "sync", no_argument, NULL, ARG_SYNC }, + { "rotate", no_argument, NULL, ARG_ROTATE }, + { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE }, + { "vacuum-files", required_argument, NULL, ARG_VACUUM_FILES }, + { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME }, + { "no-hostname", no_argument, NULL, ARG_NO_HOSTNAME }, + { "output-fields", required_argument, NULL, ARG_OUTPUT_FIELDS }, + { "namespace", required_argument, NULL, ARG_NAMESPACE }, + {} + }; + + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:g:c:S:U:t:u:NF:xrM:", options, NULL)) >= 0) + + switch (c) { + + case 'h': + return help(); + + case ARG_VERSION: + return version(); + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case 'e': + arg_pager_flags |= PAGER_JUMP_TO_END; + + if (arg_lines == ARG_LINES_DEFAULT) + arg_lines = 1000; + + arg_boot = true; + + break; + + case 'f': + arg_follow = true; + break; + + case 'o': + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(output_mode, OutputMode, _OUTPUT_MODE_MAX); + return 0; + } + + arg_output = output_mode_from_string(optarg); + if (arg_output < 0) + return log_error_errno(arg_output, "Unknown output format '%s'.", optarg); + + if (IN_SET(arg_output, OUTPUT_EXPORT, OUTPUT_JSON, OUTPUT_JSON_PRETTY, OUTPUT_JSON_SSE, OUTPUT_JSON_SEQ, OUTPUT_CAT)) + arg_quiet = true; + + if (OUTPUT_MODE_IS_JSON(arg_output)) + arg_json_format_flags = output_mode_to_json_format_flags(arg_output) | JSON_FORMAT_COLOR_AUTO; + else + arg_json_format_flags = JSON_FORMAT_OFF; + + break; + + case 'l': + arg_full = true; + break; + + case ARG_NO_FULL: + arg_full = false; + break; + + case 'a': + arg_all = true; + break; + + case 'n': + if (optarg) { + if (streq(optarg, "all")) + arg_lines = ARG_LINES_ALL; + else { + r = safe_atoi(optarg, &arg_lines); + if (r < 0 || arg_lines < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse lines '%s'", optarg); + } + } 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: + arg_no_tail = true; + break; + + case ARG_NEW_ID128: + arg_action = ACTION_NEW_ID128; + break; + + case 'q': + arg_quiet = true; + break; + + case 'm': + arg_merge = true; + break; + + case ARG_THIS_BOOT: + arg_boot = true; + arg_boot_id = SD_ID128_NULL; + arg_boot_offset = 0; + break; + + case 'b': + arg_boot = true; + arg_boot_id = SD_ID128_NULL; + arg_boot_offset = 0; + + if (optarg) { + r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset); + if (r < 0) + return log_error_errno(r, "Failed to parse boot descriptor '%s'", optarg); + + arg_boot = r; + + /* 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... */ + } else if (optind < argc) { + r = parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset); + if (r >= 0) { + arg_boot = r; + 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 ARG_NAMESPACE: + if (streq(optarg, "*")) { + arg_namespace_flags = SD_JOURNAL_ALL_NAMESPACES; + arg_namespace = NULL; + } else if (startswith(optarg, "+")) { + arg_namespace_flags = SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE; + arg_namespace = optarg + 1; + } else if (isempty(optarg)) { + arg_namespace_flags = 0; + arg_namespace = NULL; + } else { + arg_namespace_flags = 0; + arg_namespace = optarg; + } + + break; + + case 'D': + arg_directory = optarg; + break; + + case ARG_FILE: + if (streq(optarg, "-")) + /* An undocumented feature: we can read journal files from STDIN. We don't document + * this though, since after all we only support this for mmap-able, seekable files, and + * not for example pipes which are probably the primary usecase for reading things from + * STDIN. To avoid confusion we hence don't document this feature. */ + arg_file_stdin = true; + else { + r = glob_extend(&arg_file, optarg, GLOB_NOCHECK); + if (r < 0) + return log_error_errno(r, "Failed to add paths: %m"); + } + break; + + case ARG_ROOT: + r = parse_path_argument(optarg, /* suppress_root= */ true, &arg_root); + if (r < 0) + return r; + break; + + case ARG_IMAGE: + r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); + if (r < 0) + return r; + break; + + case 'c': + arg_cursor = optarg; + break; + + case ARG_CURSOR_FILE: + arg_cursor_file = 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) + return log_error_errno(r, "Failed to parse vacuum size: %s", optarg); + + arg_action = arg_action == ACTION_ROTATE ? ACTION_ROTATE_AND_VACUUM : ACTION_VACUUM; + break; + + case ARG_VACUUM_FILES: + r = safe_atou64(optarg, &arg_vacuum_n_files); + if (r < 0) + return log_error_errno(r, "Failed to parse vacuum files: %s", optarg); + + arg_action = arg_action == ACTION_ROTATE ? ACTION_ROTATE_AND_VACUUM : ACTION_VACUUM; + break; + + case ARG_VACUUM_TIME: + r = parse_sec(optarg, &arg_vacuum_time); + if (r < 0) + return log_error_errno(r, "Failed to parse vacuum time: %s", optarg); + + arg_action = arg_action == ACTION_ROTATE ? ACTION_ROTATE_AND_VACUUM : ACTION_VACUUM; + break; + +#if HAVE_GCRYPT + case ARG_FORCE: + arg_force = true; + break; + + case ARG_SETUP_KEYS: + arg_action = ACTION_SETUP_KEYS; + break; + + case ARG_VERIFY_KEY: + r = free_and_strdup(&arg_verify_key, optarg); + if (r < 0) + return r; + /* Use memset not explicit_bzero() or similar so this doesn't look confusing + * in ps or htop output. */ + memset(optarg, 'x', strlen(optarg)); + + arg_action = ACTION_VERIFY; + arg_merge = false; + break; + + case ARG_INTERVAL: + r = parse_sec(optarg, &arg_interval); + if (r < 0 || arg_interval <= 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse sealing key change interval: %s", optarg); + break; +#else + case ARG_SETUP_KEYS: + case ARG_VERIFY_KEY: + case ARG_INTERVAL: + case ARG_FORCE: + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Compiled without forward-secure sealing support."); +#endif + + case 'p': { + const char *dots; + + dots = strstr(optarg, ".."); + if (dots) { + _cleanup_free_ char *a = NULL; + 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); + + if (from < 0 || to < 0) + return log_error_errno(from < 0 ? from : to, + "Failed to parse log level range %s", optarg); + + 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) + return log_error_errno(p, "Unknown log level %s", optarg); + + arg_priorities = 0; + + for (i = 0; i <= p; i++) + arg_priorities |= 1 << i; + } + + break; + } + + case ARG_FACILITY: { + const char *p; + + for (p = optarg;;) { + _cleanup_free_ char *fac = NULL; + int num; + + r = extract_first_word(&p, &fac, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse facilities: %s", optarg); + if (r == 0) + break; + + if (streq(fac, "help")) { + help_facilities(); + return 0; + } + + num = log_facility_unshifted_from_string(fac); + if (num < 0) + return log_error_errno(num, "Bad --facility= argument \"%s\".", fac); + + if (set_ensure_put(&arg_facilities, NULL, INT_TO_PTR(num)) < 0) + return log_oom(); + } + + break; + } + + case 'g': + arg_pattern = optarg; + break; + + case ARG_CASE_SENSITIVE: + if (optarg) { + r = parse_boolean(optarg); + if (r < 0) + return log_error_errno(r, "Bad --case-sensitive= argument \"%s\": %m", optarg); + arg_case = r ? PATTERN_COMPILE_CASE_SENSITIVE : PATTERN_COMPILE_CASE_INSENSITIVE; + } else + arg_case = PATTERN_COMPILE_CASE_SENSITIVE; + + break; + + case 'S': + r = parse_timestamp(optarg, &arg_since); + if (r < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse timestamp: %s", optarg); + arg_since_set = true; + break; + + case 'U': + r = parse_timestamp(optarg, &arg_until); + if (r < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse timestamp: %s", optarg); + 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_action = ACTION_LIST_FIELDS; + arg_field = optarg; + break; + + case 'N': + arg_action = ACTION_LIST_FIELD_NAMES; + break; + + case ARG_NO_HOSTNAME: + arg_no_hostname = true; + 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 ARG_SMART_RELINQUISH_VAR: { + int root_mnt_id, log_mnt_id; + + /* Try to be smart about relinquishing access to /var/log/journal/ during shutdown: + * if it's on the same mount as the root file system there's no point in + * relinquishing access and we can leave journald write to it until the very last + * moment. */ + + r = path_get_mnt_id("/", &root_mnt_id); + if (r < 0) + log_debug_errno(r, "Failed to get root mount ID, ignoring: %m"); + else { + r = path_get_mnt_id("/var/log/journal/", &log_mnt_id); + if (r < 0) + log_debug_errno(r, "Failed to get journal directory mount ID, ignoring: %m"); + else if (root_mnt_id == log_mnt_id) { + log_debug("/var/log/journal/ is on root file system, not relinquishing access to /var."); + return 0; + } else + log_debug("/var/log/journal/ is not on the root file system, relinquishing access to it."); + } + + _fallthrough_; + } + + case ARG_RELINQUISH_VAR: + arg_action = ACTION_RELINQUISH_VAR; + break; + + case ARG_ROTATE: + arg_action = arg_action == ACTION_VACUUM ? ACTION_ROTATE_AND_VACUUM : ACTION_ROTATE; + break; + + case ARG_SYNC: + arg_action = ACTION_SYNC; + break; + + case ARG_OUTPUT_FIELDS: { + _cleanup_strv_free_ char **v = NULL; + + v = strv_split(optarg, ","); + if (!v) + return log_oom(); + + if (!arg_output_fields) + arg_output_fields = TAKE_PTR(v); + else { + r = strv_extend_strv(&arg_output_fields, v, true); + if (r < 0) + return log_oom(); + } + break; + } + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + if (arg_no_tail) + arg_lines = ARG_LINES_ALL; + + if (arg_follow && !arg_since_set && arg_lines == ARG_LINES_DEFAULT) + arg_lines = 10; + + if (arg_follow && !arg_merge && !arg_boot) { + arg_boot = true; + arg_boot_id = SD_ID128_NULL; + arg_boot_offset = 0; + } + + if (!!arg_directory + !!arg_file + !!arg_machine + !!arg_root + !!arg_image > 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Please specify at most one of -D/--directory=, --file=, -M/--machine=, --root=, --image=."); + + if (arg_since_set && arg_until_set && arg_since > arg_until) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--since= must be before --until=."); + + if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Please specify only one of --since=, --cursor=, and --after-cursor=."); + + if (arg_follow && arg_reverse) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Please specify either --reverse= or --follow=, not both."); + + if (!IN_SET(arg_action, ACTION_SHOW, ACTION_DUMP_CATALOG, ACTION_LIST_CATALOG) && optind < argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Extraneous arguments starting with '%s'", + argv[optind]); + + if ((arg_boot || arg_action == ACTION_LIST_BOOTS) && arg_merge) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Using --boot or --list-boots with --merge is not supported."); + + if (!strv_isempty(arg_system_units) && arg_journal_type == SD_JOURNAL_CURRENT_USER) { + /* Specifying --user and --unit= at the same time makes no sense (as the former excludes the user + * journal, but the latter excludes the system journal, thus resulting in empty output). Let's be nice + * to users, and automatically turn --unit= into --user-unit= if combined with --user. */ + r = strv_extend_strv(&arg_user_units, arg_system_units, true); + if (r < 0) + return r; + + arg_system_units = strv_free(arg_system_units); + } + + if (arg_pattern) { + r = pattern_compile_and_log(arg_pattern, arg_case, &arg_compiled_pattern); + if (r < 0) + return r; + + /* When --grep is used along with --lines, we don't know how many lines we can print. + * So we search backwards and count until enough lines have been printed or we hit the head. + * An exception is that --follow might set arg_lines, so let's not imply --reverse + * if that is specified. */ + if (arg_lines >= 0 && !arg_follow) + arg_reverse = true; + } + + return 1; +} + +static int add_matches(sd_journal *j, char **args) { + bool have_term = false; + + assert(j); + + STRV_FOREACH(i, args) { + int r; + + if (streq(*i, "+")) { + if (!have_term) + break; + r = sd_journal_add_disjunction(j); + have_term = false; + + } else if (path_is_absolute(*i)) { + _cleanup_free_ char *p = NULL, *t = NULL, *t2 = NULL, *interpreter = NULL; + struct stat st; + + r = chase_symlinks(*i, NULL, CHASE_TRAIL_SLASH, &p, NULL); + if (r < 0) + return log_error_errno(r, "Couldn't canonicalize path: %m"); + + if (lstat(p, &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(p, &interpreter) > 0) { + _cleanup_free_ char *comm = NULL; + + comm = strndup(basename(p), 15); + if (!comm) + return log_oom(); + + t = strjoin("_COMM=", comm); + if (!t) + return log_oom(); + + /* 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 = strjoin("_EXE=", interpreter); + if (!t2) + return log_oom(); + } + } else { + t = strjoin("_EXE=", p); + if (!t) + return log_oom(); + } + + r = sd_journal_add_match(j, t, 0); + + if (r >=0 && t2) + r = sd_journal_add_match(j, t2, 0); + + } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) { + r = add_matches_for_device(j, p); + if (r < 0) + return r; + } else + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "File is neither a device node, nor regular file, nor executable: %s", + *i); + + 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); + } + + if (!strv_isempty(args) && !have_term) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "\"+\" can only be used between terms"); + + return 0; +} + +static void boot_id_free_all(BootId *l) { + + while (l) { + BootId *i = l; + LIST_REMOVE(boot_list, l, i); + free(i); + } +} + +static int discover_next_boot(sd_journal *j, + sd_id128_t previous_boot_id, + bool advance_older, + BootId **ret) { + + _cleanup_free_ BootId *next_boot = NULL; + char match[STRLEN("_BOOT_ID=") + SD_ID128_STRING_MAX] = "_BOOT_ID="; + sd_id128_t boot_id; + int r; + + assert(j); + assert(ret); + + /* We expect the journal to be on the last position of a boot + * (in relation to the direction we are going), so that the next + * invocation of sd_journal_next/previous will be from a different + * boot. We then collect any information we desire and then jump + * to the last location of the new boot by using a _BOOT_ID match + * coming from the other journal direction. */ + + /* Make sure we aren't restricted by any _BOOT_ID matches, so that + * we can actually advance to a *different* boot. */ + sd_journal_flush_matches(j); + + do { + if (advance_older) + r = sd_journal_previous(j); + else + r = sd_journal_next(j); + if (r < 0) + return r; + else if (r == 0) + return 0; /* End of journal, yay. */ + + r = sd_journal_get_monotonic_usec(j, NULL, &boot_id); + if (r < 0) + return r; + + /* We iterate through this in a loop, until the boot ID differs from the previous one. Note that + * normally, this will only require a single iteration, as we seeked to the last entry of the previous + * boot entry already. However, it might happen that the per-journal-field entry arrays are less + * complete than the main entry array, and hence might reference an entry that's not actually the last + * one of the boot ID as last one. Let's hence use the per-field array is initial seek position to + * speed things up, but let's not trust that it is complete, and hence, manually advance as + * necessary. */ + + } while (sd_id128_equal(boot_id, previous_boot_id)); + + next_boot = new0(BootId, 1); + if (!next_boot) + return -ENOMEM; + + next_boot->id = boot_id; + + r = sd_journal_get_realtime_usec(j, &next_boot->first); + if (r < 0) + return r; + + /* Now seek to the last occurrence of this boot ID. */ + sd_id128_to_string(next_boot->id, match + STRLEN("_BOOT_ID=")); + r = sd_journal_add_match(j, match, sizeof(match) - 1); + if (r < 0) + return r; + + if (advance_older) + r = sd_journal_seek_head(j); + else + r = sd_journal_seek_tail(j); + if (r < 0) + return r; + + if (advance_older) + r = sd_journal_next(j); + else + r = sd_journal_previous(j); + if (r < 0) + return r; + else if (r == 0) + return log_debug_errno(SYNTHETIC_ERRNO(ENODATA), + "Whoopsie! We found a boot ID but can't read its last entry."); /* This shouldn't happen. We just came from this very boot ID. */ + + r = sd_journal_get_realtime_usec(j, &next_boot->last); + if (r < 0) + return r; + + *ret = TAKE_PTR(next_boot); + + return 0; +} + +static int get_boots( + sd_journal *j, + BootId **boots, + sd_id128_t *boot_id, + int offset) { + + bool skip_once; + int r, count = 0; + BootId *head = NULL, *tail = NULL; + const bool advance_older = boot_id && offset <= 0; + sd_id128_t previous_boot_id; + + assert(j); + + /* Adjust for the asymmetry that offset 0 is + * the last (and current) boot, while 1 is considered the + * (chronological) first boot in the journal. */ + skip_once = boot_id && sd_id128_is_null(*boot_id) && offset <= 0; + + /* Advance to the earliest/latest occurrence of our reference + * boot ID (taking our lookup direction into account), so that + * discover_next_boot() can do its job. + * If no reference is given, the journal head/tail will do, + * they're "virtual" boots after all. */ + if (boot_id && !sd_id128_is_null(*boot_id)) { + char match[STRLEN("_BOOT_ID=") + SD_ID128_STRING_MAX] = "_BOOT_ID="; + + sd_journal_flush_matches(j); + + sd_id128_to_string(*boot_id, match + STRLEN("_BOOT_ID=")); + r = sd_journal_add_match(j, match, sizeof(match) - 1); + if (r < 0) + return r; + + if (advance_older) + r = sd_journal_seek_head(j); /* seek to oldest */ + else + r = sd_journal_seek_tail(j); /* seek to newest */ + if (r < 0) + return r; + + if (advance_older) + r = sd_journal_next(j); /* read the oldest entry */ + else + r = sd_journal_previous(j); /* read the most recently added entry */ + if (r < 0) + return r; + else if (r == 0) + goto finish; + else if (offset == 0) { + count = 1; + goto finish; + } + + /* At this point the read pointer is positioned at the oldest/newest occurrence of the reference boot + * ID. After flushing the matches, one more invocation of _previous()/_next() will hence place us at + * the following entry, which must then have an older/newer boot ID */ + } else { + + if (advance_older) + r = sd_journal_seek_tail(j); /* seek to newest */ + else + r = sd_journal_seek_head(j); /* seek to oldest */ + if (r < 0) + return r; + + /* No sd_journal_next()/_previous() here. + * + * At this point the read pointer is positioned after the newest/before the oldest entry in the whole + * journal. The next invocation of _previous()/_next() will hence position us at the newest/oldest + * entry we have. */ + } + + previous_boot_id = SD_ID128_NULL; + for (;;) { + _cleanup_free_ BootId *current = NULL; + + r = discover_next_boot(j, previous_boot_id, advance_older, ¤t); + if (r < 0) { + boot_id_free_all(head); + return r; + } + + if (!current) + break; + + previous_boot_id = current->id; + + if (boot_id) { + if (!skip_once) + offset += advance_older ? 1 : -1; + skip_once = false; + + if (offset == 0) { + count = 1; + *boot_id = current->id; + break; + } + } else { + LIST_FOREACH(boot_list, id, head) { + if (sd_id128_equal(id->id, current->id)) { + /* boot id already stored, something wrong with the journal files */ + /* exiting as otherwise this problem would cause forever loop */ + goto finish; + } + } + LIST_INSERT_AFTER(boot_list, head, tail, current); + tail = TAKE_PTR(current); + count++; + } + } + +finish: + if (boots) + *boots = head; + + sd_journal_flush_matches(j); + + return count; +} + +static int list_boots(sd_journal *j) { + _cleanup_(table_unrefp) Table *table = NULL; + BootId *all_ids; + int count, i, r; + + assert(j); + + count = get_boots(j, &all_ids, NULL, 0); + if (count < 0) + return log_error_errno(count, "Failed to determine boots: %m"); + if (count == 0) + return count; + + table = table_new("idx", "boot id", "first entry", "last entry"); + if (!table) + return log_oom(); + + if (arg_full) + table_set_width(table, 0); + + r = table_set_json_field_name(table, 0, "index"); + if (r < 0) + return log_error_errno(r, "Failed to set JSON field name of column 0: %m"); + + (void) table_set_sort(table, (size_t) 0); + (void) table_set_reverse(table, 0, arg_reverse); + + i = 0; + LIST_FOREACH(boot_list, id, all_ids) { + r = table_add_many(table, + TABLE_INT, i - count + 1, + TABLE_SET_ALIGN_PERCENT, 100, + TABLE_ID128, id->id, + TABLE_TIMESTAMP, id->first, + TABLE_TIMESTAMP, id->last); + if (r < 0) + return table_log_add_error(r); + i++; + } + + r = table_print_with_pager(table, arg_json_format_flags, arg_pager_flags, !arg_quiet); + if (r < 0) + return table_log_print_error(r); + + boot_id_free_all(all_ids); + + return 0; +} + +static int add_boot(sd_journal *j) { + char match[STRLEN("_BOOT_ID=") + SD_ID128_STRING_MAX] = "_BOOT_ID="; + sd_id128_t boot_id; + int r; + + assert(j); + + if (!arg_boot) + return 0; + + /* Take a shortcut and use the current boot_id, which we can do very quickly. + * We can do this only when we logs are coming from the current machine, + * so take the slow path if log location is specified. */ + if (arg_boot_offset == 0 && sd_id128_is_null(arg_boot_id) && + !arg_directory && !arg_file && !arg_root) + return add_match_this_boot(j, arg_machine); + + boot_id = arg_boot_id; + r = get_boots(j, NULL, &boot_id, arg_boot_offset); + assert(r <= 1); + if (r <= 0) { + const char *reason = (r == 0) ? "No such boot ID in journal" : STRERROR(r); + + if (sd_id128_is_null(arg_boot_id)) + log_error("Data from the specified boot (%+i) is not available: %s", + arg_boot_offset, reason); + else + log_error("Data from the specified boot ("SD_ID128_FORMAT_STR") is not available: %s", + SD_ID128_FORMAT_VAL(arg_boot_id), reason); + + return r == 0 ? -ENODATA : r; + } + + sd_id128_to_string(boot_id, match + STRLEN("_BOOT_ID=")); + + 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 log_error_errno(r, "Failed to add conjunction: %m"); + + 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 log_error_errno(r, "Failed to add conjunction: %m"); + + return 0; +} + +static int get_possible_units( + sd_journal *j, + const char *fields, + char **patterns, + Set **units) { + + _cleanup_set_free_free_ Set *found = NULL; + const char *field; + int r; + + found = set_new(&string_hash_ops); + if (!found) + return -ENOMEM; + + 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 *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 -ENOMEM; + + 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 = TAKE_PTR(found); + + 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" \ + "_SYSTEMD_USER_SLICE\0" + +static int add_units(sd_journal *j) { + _cleanup_strv_free_ char **patterns = NULL; + int r, count = 0; + + assert(j); + + STRV_FOREACH(i, arg_system_units) { + _cleanup_free_ char *u = NULL; + + r = unit_name_mangle(*i, UNIT_NAME_MANGLE_GLOB | (arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN), &u); + if (r < 0) + return r; + + 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; + char *u; + + r = get_possible_units(j, SYSTEM_UNITS, patterns, &units); + if (r < 0) + return r; + + SET_FOREACH(u, units) { + r = add_matches_for_unit(j, u); + if (r < 0) + return r; + r = sd_journal_add_disjunction(j); + if (r < 0) + return r; + count++; + } + } + + patterns = strv_free(patterns); + + STRV_FOREACH(i, arg_user_units) { + _cleanup_free_ char *u = NULL; + + r = unit_name_mangle(*i, UNIT_NAME_MANGLE_GLOB | (arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN), &u); + if (r < 0) + return r; + + 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; + char *u; + + r = get_possible_units(j, USER_UNITS, patterns, &units); + if (r < 0) + return r; + + SET_FOREACH(u, units) { + 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 log_error_errno(r, "Failed to add conjunction: %m"); + + return 0; +} + +static int add_facilities(sd_journal *j) { + void *p; + int r; + + SET_FOREACH(p, arg_facilities) { + char match[STRLEN("SYSLOG_FACILITY=") + DECIMAL_STR_MAX(int)]; + + xsprintf(match, "SYSLOG_FACILITY=%d", PTR_TO_INT(p)); + + r = sd_journal_add_match(j, match, strlen(match)); + if (r < 0) + return log_error_errno(r, "Failed to add match: %m"); + } + + return 0; +} + +static int add_syslog_identifier(sd_journal *j) { + int r; + + assert(j); + + STRV_FOREACH(i, arg_syslog_identifier) { + _cleanup_free_ char *u = NULL; + + u = strjoin("SYSLOG_IDENTIFIER=", *i); + if (!u) + return -ENOMEM; + 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; +} + +#if HAVE_GCRYPT +static int format_journal_url( + const void *seed, + size_t seed_size, + uint64_t start, + uint64_t interval, + const char *hn, + sd_id128_t machine, + bool full, + char **ret_url) { + _cleanup_free_ char *url = NULL; + _cleanup_fclose_ FILE *f = NULL; + size_t url_size = 0; + int r; + + assert(seed); + assert(seed_size > 0); + + f = open_memstream_unlocked(&url, &url_size); + if (!f) + return -ENOMEM; + + if (full) + fputs("fss://", f); + + for (size_t i = 0; i < seed_size; i++) { + if (i > 0 && i % 3 == 0) + fputc('-', f); + fprintf(f, "%02x", ((uint8_t*) seed)[i]); + } + + fprintf(f, "/%"PRIx64"-%"PRIx64, start, interval); + + if (full) { + fprintf(f, "?machine=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(machine)); + if (hn) + fprintf(f, ";hostname=%s", hn); + } + + r = fflush_and_check(f); + if (r < 0) + return r; + + f = safe_fclose(f); + *ret_url = TAKE_PTR(url); + return 0; +} +#endif + +static int setup_keys(void) { +#if HAVE_GCRYPT + size_t mpk_size, seed_size, state_size; + _cleanup_(unlink_and_freep) char *k = NULL; + _cleanup_free_ char *p = NULL; + uint8_t *mpk, *seed, *state; + _cleanup_close_ int fd = -1; + sd_id128_t machine, boot; + struct stat st; + uint64_t n; + int r; + + r = stat("/var/log/journal", &st); + if (r < 0 && !IN_SET(errno, ENOENT, 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.", + "/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 (arg_force) { + r = unlink(p); + if (r < 0 && errno != ENOENT) + return log_error_errno(errno, "unlink(\"%s\") failed: %m", p); + } else if (access(p, F_OK) >= 0) + return log_error_errno(SYNTHETIC_ERRNO(EEXIST), + "Sealing key file %s exists already. Use --force to recreate.", p); + + if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX", + SD_ID128_FORMAT_VAL(machine)) < 0) + return log_oom(); + + mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR); + mpk = alloca_safe(mpk_size); + + seed_size = FSPRG_RECOMMENDED_SEEDLEN; + seed = alloca_safe(seed_size); + + state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR); + state = alloca_safe(state_size); + + log_info("Generating seed..."); + r = crypto_random_bytes(seed, seed_size); + if (r < 0) + return log_error_errno(r, "Failed to acquire random seed: %m"); + + 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); + if (fd < 0) + return log_error_errno(fd, "Failed to open %s: %m", k); + + r = chattr_secret(fd, CHATTR_WARN_UNSUPPORTED_FLAGS); + if (r < 0) + log_full_errno(ERRNO_IS_NOT_SUPPORTED(r) ? LOG_DEBUG : LOG_WARNING, + r, "Failed to set file attributes on '%s', ignoring: %m", k); + + struct FSSHeader h = { + .signature = { 'K', 'S', 'H', 'H', 'R', 'H', 'L', 'P' }, + .machine_id = machine, + .boot_id = boot, + .header_size = htole64(sizeof(h)), + .start_usec = htole64(n * arg_interval), + .interval_usec = htole64(arg_interval), + .fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR), + .fsprg_state_size = htole64(state_size), + }; + + r = loop_write(fd, &h, sizeof(h), false); + if (r < 0) + return log_error_errno(r, "Failed to write header: %m"); + + r = loop_write(fd, state, state_size, false); + if (r < 0) + return log_error_errno(r, "Failed to write state: %m"); + + if (rename(k, p) < 0) + return log_error_errno(errno, "Failed to link file: %m"); + + k = mfree(k); + + _cleanup_free_ char *hn = NULL, *key = NULL; + + r = format_journal_url(seed, seed_size, n, arg_interval, hn, machine, false, &key); + if (r < 0) + return r; + + if (on_tty()) { + hn = gethostname_malloc(); + if (hn) + hostname_cleanup(hn); + + fprintf(stderr, + "\nNew keys have been generated for host %s%s" SD_ID128_FORMAT_STR ".\n" + "\n" + "The %ssecret sealing key%s has been written to the following local file.\n" + "This key file is automatically updated when the sealing key is advanced.\n" + "It should not be used on multiple hosts.\n" + "\n" + "\t%s\n" + "\n" + "The sealing key is automatically changed every %s.\n" + "\n" + "Please write down the following %ssecret verification key%s. It should be stored\n" + "in a safe location and should not be saved locally on disk.\n" + "\n\t%s", + strempty(hn), hn ? "/" : "", + SD_ID128_FORMAT_VAL(machine), + ansi_highlight(), ansi_normal(), + p, + FORMAT_TIMESPAN(arg_interval, 0), + ansi_highlight(), ansi_normal(), + ansi_highlight_red()); + fflush(stderr); + } + + puts(key); + + if (on_tty()) { + fprintf(stderr, "%s", ansi_normal()); +#if HAVE_QRENCODE + _cleanup_free_ char *url = NULL; + r = format_journal_url(seed, seed_size, n, arg_interval, hn, machine, true, &url); + if (r < 0) + return r; + + (void) print_qrcode(stderr, + "To transfer the verification key to your phone scan the QR code below", + url); +#endif + } + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Forward-secure sealing not available."); +#endif +} + +static int verify(sd_journal *j, bool verbose) { + int r = 0; + JournalFile *f; + + assert(j); + + log_show_color(true); + + ORDERED_HASHMAP_FOREACH(f, j->files) { + int k; + usec_t first = 0, validated = 0, last = 0; + +#if 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, verbose); + if (k == -EINVAL) + /* If the key was invalid give up right-away. */ + return k; + else if (k < 0) + r = log_warning_errno(k, "FAIL: %s (%m)", f->path); + else { + char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; + log_full(verbose ? LOG_INFO : LOG_DEBUG, "PASS: %s", f->path); + + if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) { + if (validated > 0) { + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "=> 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(last > validated ? last - validated : 0, 0)); + } else if (last > 0) + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "=> No sealing yet, %s of entries not sealed.", + FORMAT_TIMESPAN(last - first, 0)); + else + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "=> No sealing yet, no entries in file."); + } + } + } + + return r; +} + +static int simple_varlink_call(const char *option, const char *method) { + _cleanup_(varlink_flush_close_unrefp) Varlink *link = NULL; + const char *error, *fn; + int r; + + if (arg_machine) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "%s is not supported in conjunction with --machine=.", option); + + fn = arg_namespace ? + strjoina("/run/systemd/journal.", arg_namespace, "/io.systemd.journal") : + "/run/systemd/journal/io.systemd.journal"; + + r = varlink_connect_address(&link, fn); + if (r < 0) + return log_error_errno(r, "Failed to connect to %s: %m", fn); + + (void) varlink_set_description(link, "journal"); + (void) varlink_set_relative_timeout(link, USEC_INFINITY); + + r = varlink_call(link, method, NULL, NULL, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to execute varlink call: %m"); + if (error) + return log_error_errno(SYNTHETIC_ERRNO(ENOANO), + "Failed to execute varlink call: %s", error); + + return 0; +} + +static int flush_to_var(void) { + if (access("/run/systemd/journal/flushed", F_OK) >= 0) + return 0; /* Already flushed, no need to contact journald */ + if (errno != ENOENT) + return log_error_errno(errno, "Unable to check for existence of /run/systemd/journal/flushed: %m"); + + return simple_varlink_call("--flush", "io.systemd.Journal.FlushToVar"); +} + +static int relinquish_var(void) { + return simple_varlink_call("--relinquish-var/--smart-relinquish-var", "io.systemd.Journal.RelinquishVar"); +} + +static int rotate(void) { + return simple_varlink_call("--rotate", "io.systemd.Journal.Rotate"); +} + +static int sync_journal(void) { + return simple_varlink_call("--sync", "io.systemd.Journal.Synchronize"); +} + +static int wait_for_change(sd_journal *j, int poll_fd) { + struct pollfd pollfds[] = { + { .fd = poll_fd, .events = POLLIN }, + { .fd = STDOUT_FILENO }, + }; + usec_t timeout; + int r; + + assert(j); + assert(poll_fd >= 0); + + /* Much like sd_journal_wait() but also keeps an eye on STDOUT, and exits as soon as we see a POLLHUP on that, + * i.e. when it is closed. */ + + r = sd_journal_get_timeout(j, &timeout); + if (r < 0) + return log_error_errno(r, "Failed to determine journal waiting time: %m"); + + r = ppoll_usec(pollfds, ELEMENTSOF(pollfds), timeout); + if (r == -EINTR) + return 0; + if (r < 0) + return log_error_errno(r, "Couldn't wait for journal event: %m"); + + if (pollfds[1].revents & (POLLHUP|POLLERR)) /* STDOUT has been closed? */ + return log_debug_errno(SYNTHETIC_ERRNO(ECANCELED), + "Standard output has been closed."); + + r = sd_journal_process(j); + if (r < 0) + return log_error_errno(r, "Failed to process journal events: %m"); + + return 0; +} + +int main(int argc, char *argv[]) { + _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; + _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; + bool previous_boot_id_valid = false, first_line = true, ellipsized = false, need_seek = false; + bool use_cursor = false, after_cursor = false; + _cleanup_(sd_journal_closep) sd_journal *j = NULL; + sd_id128_t previous_boot_id = SD_ID128_NULL, previous_boot_id_output = SD_ID128_NULL; + dual_timestamp previous_ts_output = DUAL_TIMESTAMP_NULL; + int n_shown = 0, r, poll_fd = -1; + + setlocale(LC_ALL, ""); + log_setup(); + + /* Increase max number of open files if we can, we might needs this when browsing journal files, which might be + * split up into many files. */ + (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + if (arg_image) { + assert(!arg_root); + + r = mount_image_privately_interactively( + arg_image, + DISSECT_IMAGE_GENERIC_ROOT | + DISSECT_IMAGE_REQUIRE_ROOT | + DISSECT_IMAGE_VALIDATE_OS | + DISSECT_IMAGE_RELAX_VAR_CHECK | + (arg_action == ACTION_UPDATE_CATALOG ? DISSECT_IMAGE_FSCK|DISSECT_IMAGE_GROWFS : DISSECT_IMAGE_READ_ONLY), + &unlink_dir, + &loop_device); + if (r < 0) + return r; + + arg_root = strdup(unlink_dir); + if (!arg_root) + return log_oom(); + } + + signal(SIGWINCH, columns_lines_cache_reset); + sigbus_install(); + + switch (arg_action) { + + case ACTION_NEW_ID128: + r = id128_print_new(ID128_PRINT_PRETTY); + goto finish; + + case ACTION_SETUP_KEYS: + r = setup_keys(); + goto finish; + + case ACTION_LIST_CATALOG: + case ACTION_DUMP_CATALOG: + case ACTION_UPDATE_CATALOG: { + _cleanup_free_ char *database = NULL; + + database = path_join(arg_root, CATALOG_DATABASE); + 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; + + pager_open(arg_pager_flags); + + 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; + } + + case ACTION_FLUSH: + r = flush_to_var(); + goto finish; + + case ACTION_RELINQUISH_VAR: + r = relinquish_var(); + goto finish; + + case ACTION_SYNC: + r = sync_journal(); + goto finish; + + case ACTION_ROTATE: + r = rotate(); + goto finish; + + case ACTION_SHOW: + case ACTION_PRINT_HEADER: + case ACTION_VERIFY: + case ACTION_DISK_USAGE: + case ACTION_LIST_BOOTS: + case ACTION_VACUUM: + case ACTION_ROTATE_AND_VACUUM: + case ACTION_LIST_FIELDS: + case ACTION_LIST_FIELD_NAMES: + /* These ones require access to the journal files, continue below. */ + break; + + default: + assert_not_reached(); + } + + if (arg_directory) + r = sd_journal_open_directory(&j, arg_directory, arg_journal_type); + else if (arg_root) + r = sd_journal_open_directory(&j, arg_root, arg_journal_type | SD_JOURNAL_OS_ROOT); + else if (arg_file_stdin) + r = sd_journal_open_files_fd(&j, (int[]) { STDIN_FILENO }, 1, 0); + else if (arg_file) + r = sd_journal_open_files(&j, (const char**) arg_file, 0); + else if (arg_machine) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int fd; + + if (geteuid() != 0) { + /* The file descriptor returned by OpenMachineRootDirectory() will be owned by users/groups of + * the container, thus we need root privileges to override them. */ + r = log_error_errno(SYNTHETIC_ERRNO(EPERM), "Using the --machine= switch requires root privileges."); + goto finish; + } + + r = sd_bus_open_system(&bus); + if (r < 0) { + log_error_errno(r, "Failed to open system bus: %m"); + goto finish; + } + + r = sd_bus_call_method( + bus, + "org.freedesktop.machine1", + "/org/freedesktop/machine1", + "org.freedesktop.machine1.Manager", + "OpenMachineRootDirectory", + &error, + &reply, + "s", arg_machine); + if (r < 0) { + log_error_errno(r, "Failed to open root directory: %s", bus_error_message(&error, r)); + goto finish; + } + + r = sd_bus_message_read(reply, "h", &fd); + if (r < 0) { + bus_log_parse_error(r); + goto finish; + } + + fd = fcntl(fd, F_DUPFD_CLOEXEC, 3); + if (fd < 0) { + r = log_error_errno(errno, "Failed to duplicate file descriptor: %m"); + goto finish; + } + + r = sd_journal_open_directory_fd(&j, fd, SD_JOURNAL_OS_ROOT); + if (r < 0) + safe_close(fd); + } else + r = sd_journal_open_namespace( + &j, + arg_namespace, + (arg_merge ? 0 : SD_JOURNAL_LOCAL_ONLY) | + arg_namespace_flags | arg_journal_type); + if (r < 0) { + log_error_errno(r, "Failed to open %s: %m", arg_directory ?: arg_file ? "files" : "journal"); + goto finish; + } + + r = journal_access_check_and_warn(j, arg_quiet, + !(arg_journal_type == SD_JOURNAL_CURRENT_USER || arg_user_units)); + if (r < 0) + goto finish; + + switch (arg_action) { + + case ACTION_NEW_ID128: + case ACTION_SETUP_KEYS: + case ACTION_LIST_CATALOG: + case ACTION_DUMP_CATALOG: + case ACTION_UPDATE_CATALOG: + case ACTION_FLUSH: + case ACTION_SYNC: + case ACTION_ROTATE: + assert_not_reached(); + + case ACTION_PRINT_HEADER: + journal_print_header(j); + r = 0; + goto finish; + + case ACTION_VERIFY: + r = verify(j, !arg_quiet); + goto finish; + + case ACTION_DISK_USAGE: { + uint64_t bytes = 0; + + r = sd_journal_get_usage(j, &bytes); + if (r < 0) + goto finish; + + printf("Archived and active journals take up %s in the file system.\n", + FORMAT_BYTES(bytes)); + goto finish; + } + + case ACTION_LIST_BOOTS: + r = list_boots(j); + goto finish; + + case ACTION_ROTATE_AND_VACUUM: + + r = rotate(); + if (r < 0) + goto finish; + + _fallthrough_; + + case ACTION_VACUUM: { + Directory *d; + + HASHMAP_FOREACH(d, j->directories_by_path) { + int q; + + q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_n_files, arg_vacuum_time, NULL, !arg_quiet); + if (q < 0) + r = log_error_errno(q, "Failed to vacuum %s: %m", d->path); + } + + goto finish; + } + + case ACTION_LIST_FIELD_NAMES: { + const char *field; + + SD_JOURNAL_FOREACH_FIELD(j, field) { + printf("%s\n", field); + n_shown++; + } + + r = 0; + goto finish; + } + + case ACTION_SHOW: + case ACTION_LIST_FIELDS: + break; + + default: + assert_not_reached(); + } + + if (arg_boot_offset != 0 && + sd_journal_has_runtime_files(j) > 0 && + sd_journal_has_persistent_files(j) == 0) { + log_info("Specifying boot ID or boot offset has no effect, no persistent journal was found."); + r = 0; + 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) + goto finish; + + r = add_dmesg(j); + if (r < 0) + goto finish; + + r = add_units(j); + if (r < 0) { + log_error_errno(r, "Failed to add filter for units: %m"); + goto finish; + } + + r = add_syslog_identifier(j); + if (r < 0) { + log_error_errno(r, "Failed to add filter for syslog identifiers: %m"); + goto finish; + } + + r = add_priorities(j); + if (r < 0) + goto finish; + + r = add_facilities(j); + if (r < 0) + goto finish; + + r = add_matches(j, argv + optind); + if (r < 0) + goto finish; + + if (DEBUG_LOGGING) { + _cleanup_free_ char *filter = NULL; + + filter = journal_make_match_string(j); + if (!filter) + return log_oom(); + + log_debug("Journal filter: %s", filter); + } + + if (arg_action == ACTION_LIST_FIELDS) { + const void *data; + size_t size; + + assert(arg_field); + + r = sd_journal_set_data_threshold(j, 0); + if (r < 0) { + log_error_errno(r, "Failed to unset data size threshold: %m"); + goto finish; + } + + r = sd_journal_query_unique(j, arg_field); + if (r < 0) { + log_error_errno(r, "Failed to query unique data objects: %m"); + goto finish; + } + + 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++; + } + + r = 0; + goto finish; + } + + /* Opening the fd now means the first sd_journal_wait() will actually wait */ + if (arg_follow) { + poll_fd = sd_journal_get_fd(j); + if (poll_fd == -EMFILE) { + log_warning_errno(poll_fd, "Insufficient watch descriptors available. Reverting to -n."); + arg_follow = false; + } else if (poll_fd == -EMEDIUMTYPE) { + log_error_errno(poll_fd, "The --follow switch is not supported in conjunction with reading from STDIN."); + goto finish; + } else if (poll_fd < 0) { + log_error_errno(poll_fd, "Failed to get journal fd: %m"); + goto finish; + } + } + + if (arg_cursor || arg_after_cursor || arg_cursor_file) { + _cleanup_free_ char *cursor_from_file = NULL; + const char *cursor = arg_cursor ?: arg_after_cursor; + + if (arg_cursor_file) { + r = read_one_line_file(arg_cursor_file, &cursor_from_file); + if (r < 0 && r != -ENOENT) { + log_error_errno(r, "Failed to read cursor file %s: %m", arg_cursor_file); + goto finish; + } + + if (r > 0) { + cursor = cursor_from_file; + after_cursor = true; + } + } else + after_cursor = arg_after_cursor; + + if (cursor) { + r = sd_journal_seek_cursor(j, cursor); + if (r < 0) { + log_error_errno(r, "Failed to seek to cursor: %m"); + goto finish; + } + use_cursor = true; + } + } + + if (use_cursor) { + if (!arg_reverse) + r = sd_journal_next_skip(j, 1 + after_cursor); + else + r = sd_journal_previous_skip(j, 1 + after_cursor); + + if (after_cursor && r < 2) { + /* We couldn't find the next entry after the cursor. */ + 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); + if (r < 0) { + log_error_errno(r, "Failed to seek to date: %m"); + goto finish; + } + 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"); + goto finish; + } + r = sd_journal_previous(j); + + } else if (arg_reverse) { + r = sd_journal_seek_tail(j); + if (r < 0) { + log_error_errno(r, "Failed to seek to tail: %m"); + goto finish; + } + + 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"); + goto finish; + } + + r = sd_journal_previous_skip(j, arg_lines); + + } else { + r = sd_journal_seek_head(j); + if (r < 0) { + log_error_errno(r, "Failed to seek to head: %m"); + goto finish; + } + + r = sd_journal_next(j); + } + + if (r < 0) { + log_error_errno(r, "Failed to iterate through journal: %m"); + goto finish; + } + if (r == 0) + need_seek = true; + + if (!arg_follow) + pager_open(arg_pager_flags); + + if (!arg_quiet && (arg_lines != 0 || arg_follow) && DEBUG_LOGGING) { + 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("-- Journal begins at %s. --\n", + format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start)); + else + printf("-- Journal begins at %s, ends 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; + size_t highlight[2] = {}; + + 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) + break; + } + + 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) + break; + } + + 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-- Boot "SD_ID128_FORMAT_STR" --%s\n", + ansi_highlight(), SD_ID128_FORMAT_VAL(boot_id), ansi_normal()); + + previous_boot_id = boot_id; + previous_boot_id_valid = true; + } + } + + if (arg_compiled_pattern) { + const void *message; + size_t len; + + r = sd_journal_get_data(j, "MESSAGE", &message, &len); + if (r < 0) { + if (r == -ENOENT) { + need_seek = true; + continue; + } + + log_error_errno(r, "Failed to get MESSAGE field: %m"); + goto finish; + } + + assert_se(message = startswith(message, "MESSAGE=")); + + r = pattern_matches_and_log(arg_compiled_pattern, message, + len - strlen("MESSAGE="), highlight); + if (r < 0) + goto finish; + if (r == 0) { + need_seek = true; + continue; + } + } + + flags = + arg_all * OUTPUT_SHOW_ALL | + arg_full * OUTPUT_FULL_WIDTH | + colors_enabled() * OUTPUT_COLOR | + arg_catalog * OUTPUT_CATALOG | + arg_utc * OUTPUT_UTC | + arg_no_hostname * OUTPUT_NO_HOSTNAME; + + r = show_journal_entry(stdout, j, arg_output, 0, flags, + arg_output_fields, highlight, &ellipsized, + &previous_ts_output, &previous_boot_id_output); + need_seek = true; + if (r == -EADDRNOTAVAIL) + break; + else if (r < 0) + goto finish; + + n_shown++; + + /* If journalctl take a long time to process messages, and during that time journal file + * rotation occurs, a journalctl client will keep those rotated files open until it calls + * sd_journal_process(), which typically happens as a result of calling sd_journal_wait() below + * in the "following" case. By periodically calling sd_journal_process() during the processing + * loop we shrink the window of time a client instance has open file descriptors for rotated + * (deleted) journal files. */ + if ((n_shown % PROCESS_INOTIFY_INTERVAL) == 0) { + r = sd_journal_process(j); + if (r < 0) { + log_error_errno(r, "Failed to process inotify events: %m"); + goto finish; + } + } + } + + if (!arg_follow) { + if (n_shown == 0 && !arg_quiet) + printf("-- No entries --\n"); + break; + } + + fflush(stdout); + + r = wait_for_change(j, poll_fd); + if (r < 0) + goto finish; + + first_line = false; + } + + if (arg_show_cursor || arg_cursor_file) { + _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) { + if (arg_show_cursor) + printf("-- cursor: %s\n", cursor); + + if (arg_cursor_file) { + r = write_string_file(arg_cursor_file, cursor, + WRITE_STRING_FILE_CREATE | + WRITE_STRING_FILE_ATOMIC); + if (r < 0) + log_error_errno(r, + "Failed to write new cursor to %s: %m", + arg_cursor_file); + } + } + } + +finish: + pager_close(); + + if (arg_compiled_pattern && r == 0 && n_shown == 0) + /* --grep was used, no error was thrown, but the pattern didn't + * match anything. Let's mimic grep's behavior here and return + * a non-zero exit code, so journalctl --grep can be used + * in scripts and such */ + r = -ENOENT; + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |