Mercurial > dropbear
diff common-channel.c @ 331:d6b8815a9b5e
progress towards exiting on writefd closure rather than
on process exit - dbclient hangs with scp, so requires work.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sun, 11 Jun 2006 16:19:32 +0000 |
parents | 5488db2e9e4e |
children | 6f90e5fd42cc e7c1a77d2921 |
line wrap: on
line diff
--- a/common-channel.c Sat Jun 10 16:39:40 2006 +0000 +++ b/common-channel.c Sun Jun 11 16:19:32 2006 +0000 @@ -181,6 +181,7 @@ struct Channel *channel; unsigned int i; + int ret; /* iterate through all the possible channels */ for (i = 0; i < ses.chansize; i++) { @@ -204,7 +205,8 @@ /* if we can read from the writefd, it might be closed, so we try to * see if it has errors */ - if (channel->writefd >= 0 && channel->writefd != channel->readfd + if (IS_DROPBEAR_SERVER && channel->writefd >= 0 + && channel->writefd != channel->readfd && FD_ISSET(channel->writefd, readfds)) { if (channel->initconn) { /* Handling for "in progress" connection - this is needed @@ -259,27 +261,27 @@ channel->writebuf, channel->writebuf ? 0 : cbuf_getused(channel->extrabuf))) - if (!channel->sentclosed) { - - /* check for exited - currently only used for server sessions, - * if the shell has exited etc */ - if (channel->type->checkclose) { - if (channel->type->checkclose(channel)) { - closewritefd(channel); - } + /* server chansession channels are special, since readfd mightn't + * close in the case of "sleep 4 & echo blah" until the sleep is up */ + if (channel->type->checkclose) { + if (channel->type->checkclose(channel)) { + closewritefd(channel); + closereadfd(channel, channel->readfd); + closereadfd(channel, channel->errfd); } + } - if (!channel->senteof - && channel->readfd == FD_CLOSED - && (channel->extrabuf != NULL || channel->errfd == FD_CLOSED)) { - send_msg_channel_eof(channel); - } + if (!channel->senteof + && channel->readfd == FD_CLOSED + && (channel->extrabuf == NULL || channel->errfd == FD_CLOSED)) { + send_msg_channel_eof(channel); + } - if (channel->writefd == FD_CLOSED - && channel->readfd == FD_CLOSED - && (channel->extrabuf != NULL || channel->errfd == FD_CLOSED)) { - send_msg_channel_close(channel); - } + if (!channel->sentclosed + && channel->writefd == FD_CLOSED + && channel->readfd == FD_CLOSED + && (channel->extrabuf == NULL || channel->errfd == FD_CLOSED)) { + send_msg_channel_close(channel); } /* When either party wishes to terminate the channel, it sends @@ -444,20 +446,22 @@ } } - /* For checking FD status (ie closure etc) - we don't actually - * read data from writefd */ TRACE(("writefd = %d, readfd %d, errfd %d, bufused %d", channel->writefd, channel->readfd, channel->errfd, cbuf_getused(channel->writebuf) )) - if (channel->writefd >= 0 && channel->writefd != channel->readfd) { + + /* For checking FD status (ie closure etc) - we don't actually + * read data from writefd. We don't want to do this for the client, + * since redirection to /dev/null will make it spin in the select */ + if (IS_DROPBEAR_SERVER && channel->writefd >= 0 + && channel->writefd != channel->readfd) { FD_SET(channel->writefd, readfds); } - /* Stuff from the wire, to local program/shell/user etc */ + /* Stuff from the wire */ if ((channel->writefd >= 0 && cbuf_getused(channel->writebuf) > 0 ) || channel->initconn) { - FD_SET(channel->writefd, writefds); }