Add libssh2_channel_setenv_ex.3 and libssh2_channel_x11_req_ex.3

docs/libssh2_channel_setenv_ex.3

@@ -0,0 +1,43 @@
+.\" $Id: libssh2_channel_setenv_ex.3,v 1.1 2007/06/13 21:30:15 jehousley Exp $
+.\"
+.TH libssh2_channel_setenv_ex 3 "1 Jun 2007" "libssh2 0.15" "libssh2 manual"
+.SH NAME
+libssh2_channel_setenv_ex - set an environment variable on the channel
+.SH SYNOPSIS
+#include <libssh2.h>
+
+int
+libssh2_channel_setenv_ex(LIBSSH2_CHANNEL *channel, char *varname, unsigned int varname_len, const char *value, unsigned int value_len);
+
+int
+libssh2_channel_setenv(LIBSSH2_CHANNEL *channel, char *varname, const char *value);
+
+.SH DESCRIPTION
+\fIchannel\fP - Previously opened channel instance such as returned by 
+.BR libssh2_channel_open_session(3)
+
+\fIvarname\fP - Name of environment variable to set on the remote 
+channel instance.
+
+\fIvarname_len\fP - Length of passed varname parameter.
+
+\fIvalue\fP - Value to set varname to.
+
+\fIvalue_len\fP - Length of value parameter.
+
+Set an environment variable in the remote channel's process space. Note that this does not make sense for all channel types and may be ignored by the server despite returning success.
+
+.SH RETURN VALUE
+Return 0 on success or negative on failure.  It returns
+LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
+LIBSSH2_ERROR_EAGAIN is a negative number, it isn't really a failure per se.
+
+.SH ERRORS
+\fILIBSSH2_ERROR_ALLOC\fP -  An internal memory allocation call failed.
+
+\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
+
+\fILIBSSH2_ERROR_CHANNEL_REQUEST_DENIED\fP - 
+
+.SH SEE ALSO
+.BR libssh2_channel_open_session(3)