execute: only reset those signals to the default we really need to reset to the default

[elogind.git] / src / sd-daemon.h

diff --git a/src/sd-daemon.h b/src/sd-daemon.h
index c7f5c1d6b885f07abe0227b3f407319609f073a5..e209af64896d12d6c027db6480502b5e579915e5 100644 (file)
--- a/src/sd-daemon.h
+++ b/src/sd-daemon.h
@@ -27,6 +27,8 @@
   SOFTWARE.
 ***/
 
+#include <inttypes.h>
+
 /* Reference implementation of a few systemd related interfaces for
  * writing daemons. These interfaces are trivial to implement, however
  * to simplify porting we provide this reference
@@ -55,7 +57,53 @@
 
 /* Returns how many file descriptors have been passed, or a negative
  * errno code on failure. Optionally removes the $LISTEN_FDS and
- * $LISTEN_PID file descriptors from the environment (recommended). */
+ * $LISTEN_PID file descriptors from the environment
+ * (recommended). You'll find the file descriptors passed as fds
+ * SD_LISTEN_FDS_START to SD_LISTEN_FDS_START+r-1 if r is the return
+ * value of this functioin. Returns a negative errno style error code
+ * on failure. */
 int sd_listen_fds(int unset_environment);
 
+/* Helper call for identifying a passed file descriptor. Returns 1 if
+ * the file descriptor is a FIFO in the file system stored under the
+ * specified path, 0 otherwise. If path is NULL a path name check will
+ * not be done and the call only verifies if the file descriptor
+ * refers to a FIFO. Returns a negative errno style error code on
+ * failure. */
+int sd_is_fifo(int fd, const char *path);
+
+/* Helper call for identifying a passed file descriptor. Returns 1 if
+ * the file descriptor is a socket of the specified family (AF_INET,
+ * ...) and type (SOCK_DGRAM, SOCK_STREAM, ...), 0 otherwise. If
+ * family is 0 a socket family check will not be done. If type is 0 a
+ * socket type check will not be done and the call only verifies if
+ * the file descriptor refers to a socket. If listening is > 0 it is
+ * verified that the socket is in listening mode. (i.e. listen() has
+ * been called) If listening is == 0 it is verified that the socket is
+ * not in listening mode. If listening is < 0 no listening mode check
+ * is done. Returns a negative errno style error code on failure. */
+int sd_is_socket(int fd, int family, int type, int listening);
+
+/* Helper call for identifying a passed file descriptor. Returns 1 if
+ * the file descriptor is an Internet socket, of the specified family
+ * (either AF_INET or AF_INET6) of the specified type (SOCK_DGRAM,
+ * SOCK_STREAM, ...), 0 otherwise. If version is 0 a protocol version
+ * check is not done. If type is 0 a socket type check will not be
+ * done. If port is 0 a socket port check will not be done. The
+ * listening flag is used the same way as in sd_is_socket(). Returns a
+ * negative errno style error code on failure. */
+int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port);
+
+/* Helper call for identifying a passed file descriptor. Returns 1 if
+ * the file descriptor is an AF_UNIX socket of the specified type
+ * (SOCK_DGRAM, SOCK_STREAM, ...) and path, 0 otherwise. If type is 0
+ * a socket type check will not be done. If path is NULL a socket path
+ * check will not be done. For normal AF_UNIX sockets set length to
+ * 0. For abstract namespace sockets set length to the length of the
+ * socket name (including the initial 0 byte), and pass the full
+ * socket path in path (including the initial 0 byte). The listening
+ * flag is used the same way as in sd_is_socket(). Returns a negative
+ * errno style error code on failure. */
+int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length);
+
 #endif