--- /dev/null
+/*
+ * pslog.c - print process log paths.
+ *
+ * Copyright (C) 2015 Vito Mule'
+ *
+ * This program 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
+ * (at your option) any later version.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include <dirent.h>
+#include <errno.h>
+#include <limits.h>
+#include <regex.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "i18n.h"
+
+
+static int
+usage ()
+{
+ fprintf(stderr,
+ "Usage: pslog PID...\n"
+ " pslog -V, --version\n\n"
+
+ " -V,--version display version information\n\n");
+ exit(255);
+}
+
+void
+print_version()
+{
+ fprintf(stderr, "pslog (PSmisc) %s\n", VERSION);
+ fprintf(stderr,
+ "Copyright (C) 2015-2016 Vito Mule'.\n\n");
+ fprintf(stderr,
+ "PSmisc comes with ABSOLUTELY NO WARRANTY.\n"
+ "This is free software, and you are welcome to redistribute it under\n"
+ "the terms of the GNU General Public License.\n"
+ "For more information about these matters, see the files named COPYING.\n");
+}
+
+int
+main(int argc, char const *argv[])
+{
+ regex_t re_log;
+ regex_t re_pid;
+
+ if (argc < 2) {
+ usage();
+ }
+
+ /*
+ * Allowed on the command line:
+ * --version
+ * -V
+ * /proc/nnnn
+ * nnnn
+ * where nnnn is any number that doesn't begin with 0.
+ * If --version or -V are present, further arguments are ignored
+ * completely.
+ */
+
+ regcomp(&re_pid, "^((/proc/+)?[1-9][0-9]*|-V|--version)$",
+ REG_EXTENDED|REG_NOSUB);
+
+ if (regexec(&re_pid, argv[1], 0, NULL, 0) != 0) {
+ fprintf(stderr, "pslog: invalid process id: %s\n\n", argv[1]);
+ usage();
+ }
+ else if (!strcmp("-V", argv[1]) || !strcmp("--version", argv[1])) {
+ print_version();
+ return 0;
+ }
+
+ regfree(&re_pid);
+ regcomp(&re_log, "^(.*log)$",REG_EXTENDED|REG_NOSUB);
+
+ /*
+ * At this point, all arguments are in the form /proc/nnnn
+ * or nnnn, so a simple check based on the first char is
+ * possible.
+ */
+
+ struct dirent *namelist;
+
+ char* fullpath = (char*) malloc(PATH_MAX+1);
+ if (!fullpath) {
+ perror ("malloc");
+ return 1;
+ }
+
+ char* linkpath = (char*) malloc(PATH_MAX+1);
+ if (!linkpath) {
+ perror ("malloc");
+ return 1;
+ }
+
+ char buf[PATH_MAX+1];
+ DIR *pid_dir;
+
+ if (argv[1][0] != '/') {
+ strncpy(fullpath, "/proc/", PATH_MAX);
+ strncat(fullpath, argv[1], PATH_MAX - strlen(fullpath));
+ strncat(fullpath, "/fd/", PATH_MAX - strlen(fullpath));
+ } else {
+ strncpy(fullpath, argv[1], PATH_MAX);
+ strncat(fullpath, "/fd/", PATH_MAX - strlen(fullpath));
+ }
+
+ pid_dir = opendir(fullpath);
+ if (!pid_dir) {
+ perror("opendir");
+ return 1;
+ }
+
+ fprintf(stdout, "Pid no %s:\n", argv[1]);
+
+ while((namelist = readdir(pid_dir))) {
+ strncpy(linkpath, fullpath, PATH_MAX);
+ strncat(linkpath, namelist->d_name, PATH_MAX - strlen(linkpath));
+ readlink(linkpath, buf, PATH_MAX -1);
+
+ if (regexec(&re_log, buf, 0, NULL, 0) == 0) {
+ fprintf(stdout, "Log path: %s\n", buf);
+ }
+ memset(&linkpath[0], 0, sizeof(*linkpath));
+ memset(&buf[0], 0, sizeof(buf));
+ }
+
+ free(linkpath);
+ free(fullpath);
+ regfree(&re_log);
+ return 0;
+}
projects / psmisc / commitdiff