journalctl: support /usr/bin/nginx, etc

[elogind.git] / src / journal / journalctl.c

diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index 01dceca237d7fd20db8884350642b089c822b61a..daf428106518a55632d0297e282aafd419250b19 100644 (file)
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -6,16 +6,16 @@
   Copyright 2011 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
   (at your option) any later version.
 
   systemd is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  You should have received a copy of the GNU Lesser General Public License
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
@@ -29,6 +29,7 @@
 #include <sys/poll.h>
 #include <time.h>
 #include <getopt.h>
+#include <sys/stat.h>
 
 #include <systemd/sd-journal.h>
 
@@ -38,6 +39,8 @@
 #include "pager.h"
 #include "logs-show.h"
 
+#define SD_JOURNALCTL_EXE "_EXE="
+
 static OutputMode arg_output = OUTPUT_SHORT;
 static bool arg_follow = false;
 static bool arg_show_all = false;
@@ -50,7 +53,7 @@ static bool arg_local = false;
 
 static int help(void) {
 
-        printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+        printf("%s [OPTIONS...] [MATCH]\n\n"
                "Send control commands to or query the journal.\n\n"
                "  -h --help           Show this help\n"
                "     --version        Show package version\n"
@@ -205,6 +208,8 @@ int main(int argc, char *argv[]) {
         sd_journal *j = NULL;
         unsigned line = 0;
         bool need_seek = false;
+        struct stat st;
+        char* journal_exe_buff;
 
         log_parse_environment();
         log_open();
@@ -230,7 +235,25 @@ int main(int argc, char *argv[]) {
         }
 
         for (i = optind; i < argc; i++) {
-                r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
+                if (strchr(argv[i], '=')) {
+                        r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
+                } else {
+                        if (stat(argv[i], &st) < 0) {
+                                log_error("Failed to add match: %s", strerror(-r));
+                                goto finish; /* maybe try sd_journal_add_match() when stat() fails,
+                                              * even thought we know there is no '=' ? */
+                        } else if (S_ISREG(st.st_mode) &&
+                                   S_IXUSR & st.st_mode) {
+                                journal_exe_buff = malloc(strlen(SD_JOURNALCTL_EXE) + strlen(argv[i]) + 1);
+                                journal_exe_buff = strcpy(journal_exe_buff, SD_JOURNALCTL_EXE);
+                                strncat(journal_exe_buff, argv[i], strlen(argv[i]));
+                                r = sd_journal_add_match(j, journal_exe_buff, strlen(journal_exe_buff));
+                                free(journal_exe_buff);
+                        } else {
+                                log_error("File is not a regular file or is not executable: %s", argv[i]);
+                                goto finish;
+                        }
+                }
                 if (r < 0) {
                         log_error("Failed to add match: %s", strerror(-r));
                         goto finish;