Update to match current code and add errors

docs/libssh2_sftp_read.3

@@ -1,29 +1,47 @@
-.\" $Id: libssh2_sftp_read.3,v 1.6 2007/06/13 12:51:11 jehousley Exp $
+.\" $Id: libssh2_sftp_read.3,v 1.7 2007/06/13 15:27:54 jehousley Exp $
 .\"
-.TH libssh2_sftp_read 3 "6 Feb 2007" "libssh2 0.15" "libssh2 manual"
+.TH libssh2_sftp_read 3 "1 June 2007" "libssh2 0.15" "libssh2 manual"
 .SH NAME
 libssh2_sftp_read - read data from an SFTP handle
 .SH SYNOPSIS
 #include <libssh2.h>
 #include <libssh2_sftp.h>
 
-ssize_t libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle,
-                          char *buffer, size_t buffer_maxlen);
-.SH DESCRIPTION
-Reads a block of data from an LIBSSH2_SFTP_HANDLE. This method is modelled
-after the POSIX \Iread(3)\fP function and uses the same calling
-semantics. \fIlibssh2_sftp_read(3)\fP will attempt to read as much as possible
-however it may not fill all of buffer if the file pointer reaches the end or
-if further reads would cause the socket to block.
+ssize_t 
+libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle, char *buffer, size_t buffer_maxlen);
 
-\fIhandle\fP is the SFTP File Handle as returned by \fIlibssh2_sftp_open(3)\fP.
+.SH DESCRIPTION
+\fIhandle\fP is the SFTP File Handle as returned by 
+.BR libssh2_sftp_open(3)
 
 \fIbuffer\fP is a pointer to a pre-allocated buffer of at least
+
 \fIbuffer_maxlen\fP bytes to read data into.
+
+Reads a block of data from an LIBSSH2_SFTP_HANDLE. This method is modelled
+after the POSIX 
+.BR read(2)
+function and uses the same calling semantics. 
+.BR libssh2_sftp_read(3)
+will attempt to read as much as possible however it may not fill all of 
+buffer if the file pointer reaches the end or
+if further reads would cause the socket to block.
+
 .SH RETURN VALUE
-Number of bytes actually populated into buffer, or -1 on failure.  It returns
-LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
+Number of bytes actually populated into buffer, 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_SOCKET_TIMEOUT\fP - 
+
+\fILIBSSH2_ERROR_SFTP_PROTOCOL\fP - An invalid SFTP protocol response was 
+received on the socket, or an SFTP operation caused an errorcode to be 
+returned by the server.
+
 .SH SEE ALSO
 .BR libssh2_sftp_open(3)
 .BR libssh2_sftp_readnb(3)