X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fdaemon%2Fcommon.h;h=9a9ae0d3fd30cc019af7da63eedefaa379f1cdd3;hb=afb38f31abd27d5b4ce08023f8bbbaeeb353c55f;hp=6981d21d7aad6371fafda10f2ae7a68616ccaa7d;hpb=290741f2e6de9e9b467463c1f0c6f031c4036428;p=collectd.git

diff --git a/src/daemon/common.h b/src/daemon/common.h
index 6981d21d..9a9ae0d3 100644
--- a/src/daemon/common.h
+++ b/src/daemon/common.h
@@ -29,6 +29,7 @@
 #define COMMON_H
 
 #include "collectd.h"
+
 #include "plugin.h"
 
 #if HAVE_PWD_H
@@ -146,10 +147,12 @@ int strsplit (char *string, char **fields, size_t size);
  *   is equivalent to the Perl built-in `join'.
  *
  * PARAMETERS
- *   `dst'         Buffer where the result is stored.
+ *   `dst'         Buffer where the result is stored. Can be NULL if you need to
+ *                 determine the required buffer size only.
  *   `dst_len'     Length of the destination buffer. No more than this many
  *                 bytes will be written to the memory pointed to by `dst',
- *                 including the trailing null-byte.
+ *                 including the trailing null-byte. Must be zero if dst is
+ *                 NULL.
  *   `fields'      Array of strings to be joined.
  *   `fields_num'  Number of elements in the `fields' array.
  *   `sep'         String to be inserted between any two elements of `fields'.
@@ -157,9 +160,10 @@ int strsplit (char *string, char **fields, size_t size);
  *                 Instead of passing "" (empty string) one can pass NULL.
  *
  * RETURN VALUE
- *   Returns the number of characters in `dst', NOT including the trailing
- *   null-byte. If an error occurred (empty array or `dst' too small) a value
- *   smaller than zero will be returned.
+ *   Returns the number of characters in the resulting string, excluding a
+ *   tailing null byte. If this value is greater than or equal to "dst_len", the
+ *   result in "dst" is truncated (but still null terminated). On error a
+ *   negative value is returned.
  */
 int strjoin (char *dst, size_t dst_len, char **fields, size_t fields_num, const char *sep);
 
@@ -360,6 +364,9 @@ int value_to_rate (gauge_t *ret_rate, value_t value, int ds_type, cdtime_t t,
  * (in the range [1-65535]). Returns less than zero on error. */
 int service_name_to_port_number (const char *service_name);
 
+/* Sets various, non-default, socket options */
+void set_sock_opts (int sockfd);
+
 /** Parse a string to a derive_t value. Returns zero on success or non-zero on
  * failure. If failure is returned, ret_value is not touched. */
 int strtoderive (const char *string, derive_t *ret_value);
@@ -371,4 +378,12 @@ int strtogauge (const char *string, gauge_t *ret_value);
 int strarray_add (char ***ret_array, size_t *ret_array_len, char const *str);
 void strarray_free (char **array, size_t array_len);
 
+#ifdef HAVE_SYS_CAPABILITY_H
+/** Check if the current process benefits from the capability passed in
+ * argument. Returns zero if it does, less than zero if it doesn't or on error.
+ * See capabilities(7) for the list of possible capabilities.
+ * */
+int check_capability (int capability);
+#endif /* HAVE_SYS_CAPABILITY_H */
+
 #endif /* COMMON_H */