| /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2011 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <locale.h> |
| #include <fcntl.h> |
| #include <fnmatch.h> |
| #include <errno.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <time.h> |
| #include <getopt.h> |
| #include <signal.h> |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| #include <linux/fs.h> |
| |
| #ifdef HAVE_ACL |
| #include <sys/acl.h> |
| #include "acl-util.h" |
| #endif |
| |
| #include <systemd/sd-journal.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 "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 "fsprg.h" |
| #include "unit-name.h" |
| #include "catalog.h" |
| |
| #define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE) |
| |
| static OutputMode arg_output = OUTPUT_SHORT; |
| static bool arg_pager_end = false; |
| static bool arg_follow = false; |
| static bool arg_full = true; |
| static bool arg_all = false; |
| static bool arg_no_pager = false; |
| static int arg_lines = -1; |
| 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 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_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 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, |
| } 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 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 int help(void) { |
| |
| pager_open_if_enabled(); |
| |
| printf("%s [OPTIONS...] [MATCHES...]\n\n" |
| "Query the journal.\n\n" |
| "Flags:\n" |
| " --system Show only the system journal\n" |
| " --user Show only 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 older 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" |
| " -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" |
| " -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" |
| " --new-id128 Generate a new 128-bit ID\n" |
| " --header Show journal header information\n" |
| " --disk-usage Show total disk usage of all journal files\n" |
| " -F --field=FIELD List all values that a specified field takes\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); |
| |
| 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_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, |
| }; |
| |
| 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 }, |
| { "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 }, |
| { "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' }, |
| {} |
| }; |
| |
| int c, r; |
| |
| assert(argc >= 0); |
| assert(argv); |
| |
| while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:u:F:xrM:", options, NULL)) >= 0) { |
| |
| switch (c) { |
| |
| case 'h': |
| return help(); |
| |
| case ARG_VERSION: |
| puts(PACKAGE_STRING); |
| puts(SYSTEMD_FEATURES); |
| return 0; |
| |
| case ARG_NO_PAGER: |
| arg_no_pager = true; |
| break; |
| |
| case 'e': |
| arg_pager_end = true; |
| |
| if (arg_lines < 0) |
| arg_lines = 1000; |
| |
| break; |
| |
| case 'f': |
| arg_follow = true; |
| break; |
| |
| case 'o': |
| arg_output = output_mode_from_string(optarg); |
| if (arg_output < 0) { |
| 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_all = true; |
| break; |
| |
| case 'n': |
| if (optarg) { |
| r = safe_atoi(optarg, &arg_lines); |
| if (r < 0 || arg_lines < 0) { |
| log_error("Failed to parse lines '%s'", optarg); |
| return -EINVAL; |
| } |
| } else { |
| int n; |
| |
| /* Hmm, no argument? Maybe the next |
| * word on the command line is |
| * supposed to be the argument? Let's |
| * see if there is one, and is |
| * parsable as a positive |
| * integer... */ |
| |
| if (optind < argc && |
| safe_atoi(argv[optind], &n) >= 0 && |
| n >= 0) { |
| |
| arg_lines = n; |
| optind++; |
| } else |
| arg_lines = 10; |
| } |
| |
| break; |
| |
| 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 '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) { |
| log_error("Failed to add paths: %s", strerror(-r)); |
| return r; |
| }; |
| 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; |
| |
| #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 '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 '?': |
| return -EINVAL; |
| |
| default: |
| assert_not_reached("Unhandled option"); |
| } |
| } |
| |
| if (arg_follow && !arg_no_tail && arg_lines < 0) |
| 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; |
| } |
| |
| static int generate_new_id128(void) { |
| sd_id128_t id; |
| int r; |
| unsigned i; |
| |
| r = sd_id128_randomize(&id); |
| if (r < 0) { |
| log_error("Failed to generate ID: %s", strerror(-r)); |
| return r; |
| } |
| |
| 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(", |
| 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); |
| |
| printf("As Python constant:\n" |
| ">>> import uuid\n" |
| ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n", |
| SD_ID128_FORMAT_VAL(id)); |
| |
| return 0; |
| } |
| |
| static int add_matches(sd_journal *j, char **args) { |
| char **i; |
| |
| assert(j); |
| |
| STRV_FOREACH(i, args) { |
| int r; |
| |
| if (streq(*i, "+")) |
| r = sd_journal_add_disjunction(j); |
| 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; |
| |
| p = canonicalize_file_name(*i); |
| path = p ? p : *i; |
| |
| if (stat(path, &st) < 0) { |
| log_error("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)) |
| asprintf(&t, "_KERNEL_DEVICE=c%u:%u", major(st.st_rdev), minor(st.st_rdev)); |
| else if (S_ISBLK(st.st_mode)) |
| asprintf(&t, "_KERNEL_DEVICE=b%u:%u", major(st.st_rdev), minor(st.st_rdev)); |
| 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); |
| } else |
| r = sd_journal_add_match(j, *i, 0); |
| |
| if (r < 0) { |
| log_error("Failed to add match '%s': %s", *i, strerror(-r)); |
| return r; |
| } |
| } |
| |
| 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 list_boots(sd_journal *j) { |
| int r; |
| const void *data; |
| unsigned int count = 0; |
| int w, i; |
| size_t length, allocated = 0; |
| boot_id_t *id; |
| _cleanup_free_ boot_id_t *all_ids = NULL; |
| |
| r = sd_journal_query_unique(j, "_BOOT_ID"); |
| if (r < 0) |
| return r; |
| |
| SD_JOURNAL_FOREACH_UNIQUE(j, data, length) { |
| if (length < strlen("_BOOT_ID=")) |
| continue; |
| |
| if (!GREEDY_REALLOC(all_ids, allocated, count + 1)) |
| return log_oom(); |
| |
| id = &all_ids[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_seek_head(j); |
| 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; |
| |
| r = sd_journal_seek_tail(j); |
| if (r < 0) |
| return r; |
| |
| r = sd_journal_previous(j); |
| if (r < 0) |
| return r; |
| else if (r == 0) |
| goto flush; |
| |
| r = sd_journal_get_realtime_usec(j, &id->last); |
| if (r < 0) |
| return r; |
| |
| count++; |
| flush: |
| sd_journal_flush_matches(j); |
| } |
| |
| qsort_safe(all_ids, count, sizeof(boot_id_t), boot_id_cmp); |
| |
| /* numbers are one less, but we need an extra char for the sign */ |
| w = DECIMAL_STR_WIDTH(count - 1) + 1; |
| |
| for (id = all_ids, i = 0; id < all_ids + count; id++, i++) { |
| char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX]; |
| |
| printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n", |
| w, i - count + 1, |
| SD_ID128_FORMAT_VAL(id->id), |
| format_timestamp(a, sizeof(a), id->first), |
| format_timestamp(b, sizeof(b), id->last)); |
| } |
| |
| return 0; |
| } |
| |
| static int get_relative_boot_id(sd_journal *j, sd_id128_t *boot_id, int relative) { |
| int r; |
| const void *data; |
| unsigned int count = 0; |
| size_t length, allocated = 0; |
| boot_id_t ref_boot_id = {SD_ID128_NULL}, *id; |
| _cleanup_free_ boot_id_t *all_ids = NULL; |
| |
| assert(j); |
| assert(boot_id); |
| |
| r = sd_journal_query_unique(j, "_BOOT_ID"); |
| if (r < 0) |
| return r; |
| |
| SD_JOURNAL_FOREACH_UNIQUE(j, data, length) { |
| if (length < strlen("_BOOT_ID=")) |
| continue; |
| |
| if (!GREEDY_REALLOC(all_ids, allocated, count + 1)) |
| return log_oom(); |
| |
| id = &all_ids[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_seek_head(j); |
| 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 (sd_id128_equal(id->id, *boot_id)) |
| ref_boot_id = *id; |
| |
| count++; |
| flush: |
| sd_journal_flush_matches(j); |
| } |
| |
| qsort_safe(all_ids, count, sizeof(boot_id_t), boot_id_cmp); |
| |
| if (sd_id128_equal(*boot_id, SD_ID128_NULL)) { |
| if (relative > (int) count || relative <= -(int)count) |
| return -EADDRNOTAVAIL; |
| |
| *boot_id = all_ids[(relative <= 0)*count + relative - 1].id; |
| } else { |
| id = bsearch(&ref_boot_id, all_ids, count, sizeof(boot_id_t), boot_id_cmp); |
| |
| if (!id || |
| relative <= 0 ? (id - all_ids) + relative < 0 : |
| (id - all_ids) + relative >= (int) count) |
| return -EADDRNOTAVAIL; |
| |
| *boot_id = (id + relative)->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_relative_boot_id(j, &arg_boot_id, arg_boot_offset); |
| if (r < 0) { |
| if (sd_id128_equal(arg_boot_id, SD_ID128_NULL)) |
| log_error("Failed to look up boot %+i: %s", arg_boot_offset, strerror(-r)); |
| 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) { |
| log_error("Failed to add match: %s", strerror(-r)); |
| return r; |
| } |
| |
| 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) { |
| log_error("Failed to add match: %s", strerror(-r)); |
| return r; |
| } |
| |
| 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_func, string_compare_func); |
| 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) { |
| log_error("Failed to add match: %s", strerror(-r)); |
| 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("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) { |
| log_error("Failed to get machine ID: %s", strerror(-r)); |
| return r; |
| } |
| |
| r = sd_id128_get_boot(&boot); |
| if (r < 0) { |
| log_error("Failed to get boot ID: %s", strerror(-r)); |
| return r; |
| } |
| |
| 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("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("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("Failed to read random seed: %s", strerror(EIO)); |
| 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; |
| |
| close_nointr_nofail(fd); |
| fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC); |
| if (fd < 0) { |
| log_error("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("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("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("Failed to write header: %s", strerror(EIO)); |
| r = -EIO; |
| goto finish; |
| } |
| |
| l = loop_write(fd, state, state_size, false); |
| if (l < 0 || (size_t) l != state_size) { |
| log_error("Failed to write state: %s", strerror(EIO)); |
| r = -EIO; |
| goto finish; |
| } |
| |
| if (link(k, p) < 0) { |
| log_error("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: |
| if (fd >= 0) |
| close_nointr_nofail(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); |
| |
| 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(a, sizeof(a), first), |
| format_timestamp(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 (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 (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("Error was encountered while opening journal files: %s", |
| strerror(err)); |
| } |
| |
| return r; |
| } |
| |
| 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_SETUP_KEYS) { |
| r = setup_keys(); |
| goto finish; |
| } |
| |
| if (arg_action == ACTION_UPDATE_CATALOG || |
| arg_action == ACTION_LIST_CATALOG || |
| arg_action == ACTION_DUMP_CATALOG) { |
| |
| const char* database = CATALOG_DATABASE; |
| _cleanup_free_ char *copy = NULL; |
| if (arg_root) { |
| copy = strjoin(arg_root, "/", CATALOG_DATABASE, NULL); |
| if (!copy) { |
| r = log_oom(); |
| goto finish; |
| } |
| path_kill_slashes(copy); |
| database = copy; |
| } |
| |
| if (arg_action == ACTION_UPDATE_CATALOG) { |
| r = catalog_update(database, arg_root, catalog_file_dirs); |
| if (r < 0) |
| log_error("Failed to list catalog: %s", strerror(-r)); |
| } 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("Failed to list catalog: %s", strerror(-r)); |
| } |
| |
| 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("Failed to open %s: %s", |
| arg_directory ? arg_directory : arg_file ? "files" : "journal", |
| strerror(-r)); |
| 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("Journals take up %s on disk.\n", |
| format_bytes(sbytes, sizeof(sbytes), bytes)); |
| return 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("Failed to add filter for units: %s", strerror(-r)); |
| return EXIT_FAILURE; |
| } |
| |
| r = add_priorities(j); |
| if (r < 0) { |
| log_error("Failed to add filter for priorities: %s", strerror(-r)); |
| return EXIT_FAILURE; |
| } |
| |
| r = add_matches(j, argv + optind); |
| if (r < 0) { |
| log_error("Failed to add filters: %s", strerror(-r)); |
| 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("Failed to query unique data objects: %s", strerror(-r)); |
| 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_cursor : arg_after_cursor); |
| if (r < 0) { |
| log_error("Failed to seek to cursor: %s", strerror(-r)); |
| 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("Failed to seek to date: %s", strerror(-r)); |
| 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("Failed to seek to date: %s", strerror(-r)); |
| return EXIT_FAILURE; |
| } |
| r = sd_journal_previous(j); |
| |
| } else if (arg_lines >= 0) { |
| r = sd_journal_seek_tail(j); |
| if (r < 0) { |
| log_error("Failed to seek to tail: %s", strerror(-r)); |
| 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("Failed to seek to tail: %s", strerror(-r)); |
| return EXIT_FAILURE; |
| } |
| |
| r = sd_journal_previous(j); |
| |
| } else { |
| r = sd_journal_seek_head(j); |
| if (r < 0) { |
| log_error("Failed to seek to head: %s", strerror(-r)); |
| return EXIT_FAILURE; |
| } |
| |
| r = sd_journal_next(j); |
| } |
| |
| if (r < 0) { |
| log_error("Failed to iterate through journal: %s", strerror(-r)); |
| 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("Failed to get cutoff: %s", strerror(-r)); |
| goto finish; |
| } |
| |
| if (r > 0) { |
| if (arg_follow) |
| printf("-- Logs begin at %s. --\n", |
| format_timestamp(start_buf, sizeof(start_buf), start)); |
| else |
| printf("-- Logs begin at %s, end at %s. --\n", |
| format_timestamp(start_buf, sizeof(start_buf), start), |
| format_timestamp(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("Failed to iterate through journal: %s", strerror(-r)); |
| 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("Failed to determine timestamp: %s", strerror(-r)); |
| 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("Failed to determine timestamp: %s", strerror(-r)); |
| goto finish; |
| } |
| if (usec < arg_since) |
| goto finish; |
| } |
| |
| if (!arg_merge) { |
| 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; |
| |
| 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("Failed to get cursor: %s", strerror(-r)); |
| else if (r >= 0) |
| printf("-- cursor: %s\n", cursor); |
| } |
| |
| break; |
| } |
| |
| r = sd_journal_wait(j, (uint64_t) -1); |
| if (r < 0) { |
| log_error("Couldn't wait for journal event: %s", strerror(-r)); |
| goto finish; |
| } |
| |
| first_line = false; |
| } |
| |
| finish: |
| pager_close(); |
| |
| return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |