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Add recvmmsg and sendmmsg to the generic glibc API.

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This commit is contained in:
Thomas Schwinge
2012-11-03 18:29:46 +01:00
parent cf9a5d1861
commit 123be9deda
13 changed files with 147 additions and 60 deletions
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31
socket/sys/socket.h
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@@ -97,6 +97,16 @@ typedef union { __SOCKADDR_ALLTYPES
# undef __SOCKADDR_ONETYPE
#endif
#ifdef __USE_GNU
/* For `recvmmsg' and `sendmmsg'. */
struct mmsghdr
{
struct msghdr msg_hdr; /* Actual message header. */
unsigned int msg_len; /* Number of received or sent bytes for the
entry. */
};
#endif
/* Create a new socket of type TYPE in domain DOMAIN, using
protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically.
@@ -175,6 +185,16 @@ extern ssize_t recvfrom (int __fd, void *__restrict __buf, size_t __n,
extern ssize_t sendmsg (int __fd, const struct msghdr *__message,
int __flags);
#ifdef __USE_GNU
/* Send a VLEN messages as described by VMESSAGES to socket FD.
Returns the number of datagrams successfully written or -1 for errors.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int sendmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags);
#endif
/* Receive a message as described by MESSAGE from socket FD.
Returns the number of bytes read or -1 for errors.
@@ -182,6 +202,17 @@ extern ssize_t sendmsg (int __fd, const struct msghdr *__message,
__THROW. */
extern ssize_t recvmsg (int __fd, struct msghdr *__message, int __flags);
#ifdef __USE_GNU
/* Receive up to VLEN messages as described by VMESSAGES from socket FD.
Returns the number of bytes read or -1 for errors.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int recvmmsg (int __fd, struct mmsghdr *__vmessages,
unsigned int __vlen, int __flags,
const struct timespec *__tmo);
#endif
/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL
into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's