+/**
+ * collectd - contrib/docker/rootfs_prefix/rootfs_prefix.c
+ * Copyright (C) 2016-2018 Marc Fournier
+ * Copyright (C) 2016-2018 Ruben Kerkhof
+ *
+ * MIT License:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Marc Fournier <marc.fournier at camptocamp.com>
+ * Ruben Kerkhof <ruben at rubenkerkhof.com>
+ **/
+
#define _GNU_SOURCE
#include <dirent.h>
#define BUFSIZE 256
const char *add_prefix(const char *orig, char *prefixed) {
- int status;
- int errno;
-
- if ((strncmp(orig, "/proc", 5) == 0) || (strncmp(orig, "/sys", 4) == 0)) {
-
- status = snprintf(prefixed, BUFSIZE, "%s%s", PREFIX, orig);
- if ((unsigned int)status >= BUFSIZE) {
- error(status, ENAMETOOLONG,
- "'%s' got truncated when adding '%s' prefix: '%s'", orig, PREFIX,
- prefixed);
- return orig;
- } else if (status < 1) {
- error(status, errno,
- "adding '%s' prefix to file path failed: '%s' -> '%s'", PREFIX,
- orig, prefixed);
- return orig;
- } else {
- return (const char *)prefixed;
- }
+ if ((strncmp(orig, "/proc", strlen("/proc")) != 0) &&
+ (strncmp(orig, "/sys", strlen("/sys")) != 0))
+ return orig;
- } else {
+ int status = snprintf(prefixed, BUFSIZE, "%s%s", PREFIX, orig);
+ if (status < 1) {
+ error(status, errno, "adding '%s' prefix to file path failed: '%s' -> '%s'",
+ PREFIX, orig, prefixed);
+ return orig;
+ } else if ((unsigned int)status >= BUFSIZE) {
+ error(status, ENAMETOOLONG,
+ "'%s' got truncated when adding '%s' prefix: '%s'", orig, PREFIX,
+ prefixed);
return orig;
+ } else {
+ return (const char *)prefixed;
}
}