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Correct check for DNS request send success

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This predates the sendmmsg use.  The two requests can use different
request sizes but the check for successful transfer always only used
buflen.
This commit is contained in:
Ulrich Drepper
2012-03-30 08:27:11 -04:00
parent c030f70c87
commit 8e6d108343
2 changed files with 2 additions and 2 deletions
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2
ChangeLog
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@ -1,7 +1,7 @@
2012-03-30 Ulrich Drepper <drepper@gmail.com> 2012-03-30 Ulrich Drepper <drepper@gmail.com>
* resolv/res_send.c (send_dg): Use sendmmsg if we have to write two * resolv/res_send.c (send_dg): Use sendmmsg if we have to write two
requests to save a system call. requests to save a system call. Fix check that all bytes are sent.
* sysdeps/unix/sysv/linux/bits/socket.h (struct mmsghdr): Fix up * sysdeps/unix/sysv/linux/bits/socket.h (struct mmsghdr): Fix up
comments for sendmmsg. comments for sendmmsg.

2
resolv/res_send.c
View File

@ -1171,7 +1171,7 @@ send_dg(res_state statp,
else else
sr = send (pfd[0].fd, buf, buflen, MSG_NOSIGNAL); sr = send (pfd[0].fd, buf, buflen, MSG_NOSIGNAL);
if (sr != buflen) { if (sr != (nwritten != 0 ? buflen2 : buflen)) {
if (errno == EINTR || errno == EAGAIN) if (errno == EINTR || errno == EAGAIN)
goto recompute_resend; goto recompute_resend;
Perror(statp, stderr, "send", errno); Perror(statp, stderr, "send", errno);