X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fjournal%2Fjournalctl.c;h=65114b2ff8a219711c56d5d1adc4ba9bf41f5d7e;hb=7199aa96ce19468d9ce4cb21a13e32a3792fde41;hp=90845097049b183098417325c74239118b6e1697;hpb=37d3ab1b7e114f0fb6dfb2e7273569b42794b76a;p=elogind.git diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c index 908450970..65114b2ff 100644 --- a/src/journal/journalctl.c +++ b/src/journal/journalctl.c @@ -38,6 +38,7 @@ #include #include "log.h" +#include "logs-show.h" #include "util.h" #include "path-util.h" #include "build.h" @@ -56,6 +57,7 @@ #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 = false; static bool arg_all = false; @@ -75,8 +77,10 @@ static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC; static usec_t arg_since, arg_until; static bool arg_since_set = false, arg_until_set = false; static const char *arg_unit = NULL; +static bool arg_unit_system; static const char *arg_field = NULL; static bool arg_catalog = false; +static bool arg_reverse = false; static enum { ACTION_SHOW, @@ -99,10 +103,13 @@ static int help(void) { " -c --cursor=CURSOR Start showing entries from specified cursor\n" " -b --this-boot Show data only from 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 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-monotonic,\n" " verbose, export, json, json-pretty, json-sse, cat)\n" " -x --catalog Add message explanations where available\n" @@ -150,6 +157,7 @@ static int parse_argv(int argc, char *argv[]) { ARG_DISK_USAGE, ARG_SINCE, ARG_UNTIL, + ARG_USER_UNIT, ARG_LIST_CATALOG, ARG_UPDATE_CATALOG }; @@ -158,6 +166,7 @@ static int parse_argv(int argc, char *argv[]) { { "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' }, { "output", required_argument, NULL, 'o' }, { "all", no_argument, NULL, 'a' }, @@ -180,10 +189,12 @@ static int parse_argv(int argc, char *argv[]) { { "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 }, { "update-catalog",no_argument, NULL, ARG_UPDATE_CATALOG }, + { "reverse", no_argument, NULL, 'r' }, { NULL, 0, NULL, 0 } }; @@ -192,7 +203,7 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hfo:an::qmbD:p:c:u:F:x", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "hefo:an::qmbD:p:c:u:F:xr", options, NULL)) >= 0) { switch (c) { @@ -209,6 +220,14 @@ static int parse_argv(int argc, char *argv[]) { 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; @@ -403,6 +422,12 @@ static int parse_argv(int argc, char *argv[]) { case 'u': arg_unit = optarg; + arg_unit_system = true; + break; + + case ARG_USER_UNIT: + arg_unit = optarg; + arg_unit_system = false; break; case '?': @@ -424,6 +449,10 @@ static int parse_argv(int argc, char *argv[]) { arg_action = ACTION_UPDATE_CATALOG; break; + case 'r': + arg_reverse = true; + break; + default: log_error("Unknown option code %c", c); return -EINVAL; @@ -443,6 +472,11 @@ static int parse_argv(int argc, char *argv[]) { return -EINVAL; } + if (arg_follow && arg_reverse) { + log_error("Please specify either --reverse= or --follow=, not both."); + return -EINVAL; + } + return 1; } @@ -571,15 +605,12 @@ static int add_unit(sd_journal *j) { if (!u) return log_oom(); - m = strappend("_SYSTEMD_UNIT=", u); - if (!m) - return log_oom(); - - r = sd_journal_add_match(j, m, strlen(m)); - if (r < 0) { - log_error("Failed to add match: %s", strerror(-r)); + if (arg_unit_system) + r = add_matches_for_unit(j, u); + else + r = add_matches_for_user_unit(j, u, getuid()); + if (r < 0) return r; - } return 0; } @@ -847,16 +878,16 @@ static int verify(sd_journal *j) { static int access_check(void) { #ifdef HAVE_ACL - if (access("/var/log/journal", F_OK) < 0 && geteuid() != 0 && in_group("adm") <= 0) { - log_error("Unprivileged users can't see messages unless persistent log storage is enabled. Users in the group 'adm' can always see messages."); + if (access("/var/log/journal", F_OK) < 0 && geteuid() != 0 && in_group("systemd-journal") <= 0) { + log_error("Unprivileged users can't see messages unless persistent log storage is enabled. Users in the group 'systemd-journal' can always see messages."); return -EACCES; } - if (!arg_quiet && geteuid() != 0 && in_group("adm") <= 0) - log_warning("Showing user generated messages only. Users in the group 'adm' can see all messages. Pass -q to turn this notice off."); + if (!arg_quiet && geteuid() != 0 && in_group("systemd-journal") <= 0) + log_warning("Showing user generated messages only. Users in the group 'systemd-journal' can see all messages. Pass -q to turn this notice off."); #else - if (geteuid() != 0 && in_group("adm") <= 0) { - log_error("No access to messages. Only users in the group 'adm' can see messages."); + if (geteuid() != 0 && in_group("systemd-journal") <= 0) { + log_error("No access to messages. Only users in the group 'systemd-journal' can see messages."); return -EACCES; } #endif @@ -997,10 +1028,12 @@ int main(int argc, char *argv[]) { log_error("Failed to seek to cursor: %s", strerror(-r)); goto finish; } + if (!arg_reverse) + r = sd_journal_next(j); + else + r = sd_journal_previous(j); - r = sd_journal_next(j); - - } else if (arg_since_set) { + } 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)); @@ -1008,6 +1041,14 @@ int main(int argc, char *argv[]) { } 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)); + goto finish; + } + r = sd_journal_previous(j); + } else if (arg_lines >= 0) { r = sd_journal_seek_tail(j); if (r < 0) { @@ -1017,6 +1058,15 @@ int main(int argc, char *argv[]) { 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)); + goto finish; + } + + r = sd_journal_previous(j); + } else { r = sd_journal_seek_head(j); if (r < 0) { @@ -1033,7 +1083,7 @@ int main(int argc, char *argv[]) { } if (!arg_no_pager && !arg_follow) - pager_open(); + pager_open(arg_pager_end); if (!arg_quiet) { usec_t start, end; @@ -1061,7 +1111,10 @@ int main(int argc, char *argv[]) { int flags; if (need_seek) { - r = sd_journal_next(j); + 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; @@ -1071,7 +1124,7 @@ int main(int argc, char *argv[]) { if (r == 0) break; - if (arg_until_set) { + if (arg_until_set && !arg_reverse) { usec_t usec; r = sd_journal_get_realtime_usec(j, &usec); @@ -1083,6 +1136,18 @@ int main(int argc, char *argv[]) { 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;