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sd-daemon: extend documentation a little

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This commit is contained in:
Lennart Poettering 2010-05-20 19:01:29 +02:00
parent 86700cf7ad
commit cd250a39da
2 changed files with 17 additions and 10 deletions
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11
src/sd-daemon.c
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@ -254,15 +254,16 @@ int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t
/* Unnamed socket */
return l == sizeof(sa_family_t);
if (l < sizeof(sa_family_t) + length + 1)
return 0;
if (path[0])
/* Normal path socket */
return memcmp(path, sockaddr.un.sun_path, length+1) == 0;
return
(l >= sizeof(sa_family_t) + length + 1) &&
memcmp(path, sockaddr.un.sun_path, length+1) == 0;
else
/* Abstract namespace socket */
return memcmp(path, sockaddr.un.sun_path+1, length) == 0;
return
(l == sizeof(sa_family_t) + length) &&
memcmp(path, sockaddr.un.sun_path, length) == 0;
}
return 1;

16
src/sd-daemon.h
View File

@ -76,16 +76,20 @@ int sd_is_fifo(int fd, const char *path);
* the file descriptor is a socket of the specified type (SOCK_DGRAM,
* SOCK_STREAM, ...), 0 otherwise. 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. Returns a negative errno style error code on
* failure. */
* 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 type, int listening);
/* Helper call for identifying a passed file descriptor. Returns 1 if
* the file descriptor is an Internet socket (either AF_INET or
* AF_INET6) of the specified type (SOCK_DGRAM, SOCK_STREAM, ...), 0
* otherwise. If type is 0 a socket type check will not be done. If
* port is 0 a socket port check will not be done. Returns a negative
* errno style error code on failure. */
* 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 type, int listening, uint16_t port);
/* Helper call for identifying a passed file descriptor. Returns 1 if
@ -94,7 +98,9 @@ int sd_is_socket_inet(int fd, int type, int listening, uint16_t port);
* 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 (excluding the initial 0 byte). Returns a negative
* 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);