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recv(),send(): Directly call interposing entry instead of going through PLT.

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recv() and send()'s calls to recvfrom() and sendto() are much like
waitpid()'s call to wait4(), and likewise need not allow PLT interposing on
the called function.
This commit is contained in:
jilles 2015-05-10 14:50:50 +00:00
parent ae16c5888f
commit 8ae6fa0eb6
2 changed files with 10 additions and 2 deletions
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6
lib/libc/net/recv.c
View File

@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/socket.h>
#include "libc_private.h"
#include <stddef.h>
@ -48,5 +49,8 @@ recv(s, buf, len, flags)
* POSIX says recv() shall be a cancellation point, so call the
* cancellation-enabled recvfrom() and not _recvfrom().
*/
return (recvfrom(s, buf, len, flags, NULL, 0));
return (((ssize_t (*)(int, void *, size_t, int,
struct sockaddr *, socklen_t *))
__libc_interposing[INTERPOS_recvfrom])(s, buf, len, flags,
NULL, NULL));
}

6
lib/libc/net/send.c
View File

@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/socket.h>
#include "libc_private.h"
#include <stddef.h>
@ -48,5 +49,8 @@ send(s, msg, len, flags)
* POSIX says send() shall be a cancellation point, so call the
* cancellation-enabled sendto() and not _sendto().
*/
return (sendto(s, msg, len, flags, NULL, 0));
return (((ssize_t (*)(int, const void *, size_t, int,
const struct sockaddr *, socklen_t))
__libc_interposing[INTERPOS_sendto])(s, msg, len, flags,
NULL, 0));
}