1 files changed, 93 insertions, 0 deletions
diff --git a/src/pmdas/linux/getinfo.c b/src/pmdas/linux/getinfo.c
new file mode 100644
index 0000000..d5f7f29
--- /dev/null
+++ b/src/pmdas/linux/getinfo.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2014 Red Hat.
+ * 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"
+#include "pmda.h"
+#include "indom.h"
+
+char *
+get_distro_info(void)
+{
+    /*
+     * Heuristic guesswork ... add code here as we learn
+     * more about how to identify each Linux distribution.
+     */
+    static char		*distro_name;
+    struct stat		sbuf;
+    int			r, sts, fd = -1, len = 0;
+    char		path[MAXPATHLEN];
+    char		prefix[16];
+    enum {	/* rfiles array offsets */
+	DEB_VERSION	= 0,
+	LSB_RELEASE	= 6,
+    };
+    char *rfiles[] = { "debian_version", "oracle-release", "fedora-release",
+	"redhat-release", "slackware-version", "SuSE-release", "lsb-release",
+	/* insert any new distribution release variants here */
+	NULL
+    };
+
+    if (distro_name)
+	return distro_name;
+
+    for (r = 0; rfiles[r] != NULL; r++) {
+	snprintf(path, sizeof(path), "%s/etc/%s", linux_statspath, rfiles[r]);
+	if (stat(path, &sbuf) == 0 && S_ISREG(sbuf.st_mode)) {
+	    fd = open(path, O_RDONLY);
+	    break;
+	}
+    }
+    if (fd != -1) {
+	if (r == DEB_VERSION) {	/* Debian, needs a prefix */
+	    strncpy(prefix, "Debian ", sizeof(prefix));
+	    len = 7;
+	}
+	/*
+	 * at this point, assume sbuf is good and file contains
+	 * the string we want, probably with a \n terminator
+	 */
+	distro_name = (char *)malloc(len + (int)sbuf.st_size + 1);
+	if (distro_name != NULL) {
+	    if (len)
+		strncpy(distro_name, prefix, len);
+	    sts = read(fd, distro_name + len, (int)sbuf.st_size);
+	    if (sts <= 0) {
+		free(distro_name);
+		distro_name = NULL;
+	    } else {
+		char *nl;
+
+		if (r == LSB_RELEASE) {	/* may be Ubuntu */
+		    if (!strncmp(distro_name, "DISTRIB_ID = ", 13))
+			distro_name += 13;	/* ick */
+		    if (!strncmp(distro_name, "DISTRIB_ID=", 11))
+			distro_name += 11;	/* more ick */
+		}
+		distro_name[sts + len] = '\0';
+		if ((nl = strchr(distro_name, '\n')) != NULL)
+		    *nl = '\0';
+	    }
+	}
+	close(fd);
+    }
+    if (distro_name == NULL) 
+	distro_name = "?";
+    return distro_name;
+}