1 files changed, 55 insertions, 0 deletions
diff --git a/src/pmdas/linux_proc/getinfo.c b/src/pmdas/linux_proc/getinfo.c
new file mode 100644
index 0000000..b4633a5
--- /dev/null
+++ b/src/pmdas/linux_proc/getinfo.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2010 Aconex.  All Rights Reserved.
+ * Copyright (c) 2000,2004 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ * 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.
+ */
+
+#include <sys/stat.h>
+#include <sys/dir.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include "pmapi.h"
+
+char *
+get_ttyname_info(int pid, dev_t dev, char *ttyname)
+{
+    DIR *dir;
+    struct dirent *dp;
+    struct stat sbuf;
+    int found=0;
+    char procpath[MAXPATHLEN];
+    char ttypath[MAXPATHLEN];
+
+    sprintf(procpath, "/proc/%d/fd", pid);
+    if ((dir = opendir(procpath)) != NULL) {
+	while ((dp = readdir(dir)) != NULL) {
+	    if (!isdigit((int)dp->d_name[0]))
+	    	continue;
+	    sprintf(procpath, "/proc/%d/fd/%s", pid, dp->d_name);
+	    if (realpath(procpath, ttypath) == NULL || stat(ttypath, &sbuf) < 0)
+	    	continue;
+	    if (S_ISCHR(sbuf.st_mode) && dev == sbuf.st_rdev) {
+		found=1;
+		break;
+	    }
+	}
+	closedir(dir);
+    }
+
+    if (!found)
+    	strcpy(ttyname, "?");
+    else
+	/* skip the "/dev/" prefix */
+    	strcpy(ttyname, &ttypath[5]);
+
+    return ttyname;
+}