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author | alfred <alfred@FreeBSD.org> | 2004-10-17 07:13:34 +0000 |
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committer | alfred <alfred@FreeBSD.org> | 2004-10-17 07:13:34 +0000 |
commit | 6102082486186990a57ad1b2b789a762edad85f3 (patch) | |
tree | 70d37449b51d86361fb191087354b6371520c1e6 /lib | |
parent | 3d89cd8c71a1b9301aba63eab3d9fd6775b9863f (diff) | |
download | FreeBSD-src-6102082486186990a57ad1b2b789a762edad85f3.zip FreeBSD-src-6102082486186990a57ad1b2b789a762edad85f3.tar.gz |
Document EMSGSIZE return from recvmsg due to insufficient free files
when transfering rights (file descriptors.)
Diffstat (limited to 'lib')
-rw-r--r-- | lib/libc/sys/recv.2 | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/libc/sys/recv.2 b/lib/libc/sys/recv.2 index 1131824..51d8d61 100644 --- a/lib/libc/sys/recv.2 +++ b/lib/libc/sys/recv.2 @@ -207,7 +207,9 @@ struct cmsghdr { .Ed As an example, one could use this to learn of changes in the data-stream in XNS/SPP, or in ISO, to obtain user-connection-request data by requesting -a recvmsg with no data buffer provided immediately after an +a +.Fn recvmsg +with no data buffer provided immediately after an .Fn accept system call. .Pp @@ -287,6 +289,13 @@ and The argument .Fa s does not refer to a socket. +.It Bq Er EMSGSIZE +.Fn recvmsg +was used to receive rights (file descriptors) that were in flight on the +connection. However, the receiving program did not have enough free file +descriptor slots to accept the them. In this case the descriptors are +closed, any pending data can be returned by another call to +.Fn recvmsg . .It Bq Er EAGAIN The socket is marked non-blocking, and the receive operation would block, or |