29 строки
1.2 KiB
Groff
29 строки
1.2 KiB
Groff
.\" $Id: libssh2_sftp_readnb.3,v 1.1 2007/02/23 10:20:56 bagder Exp $
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.\"
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.TH libssh2_sftp_read 3 "6 Feb 2007" "libssh2 0.15" "libssh2 manual"
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.SH NAME
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libssh2_sftp_readnb - read data from an SFTP handle non-blocking
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.SH SYNOPSIS
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#include <libssh2.h>
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ssize_t libssh2_sftp_readnb(LIBSSH2_SFTP_HANDLE *handle,
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char *buffer, size_t buffer_maxlen);
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.SH DESCRIPTION
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Reads a block of data from an LIBSSH2_SFTP_HANDLE non-blocking. This method is
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modeled after the POSIX \Iread(3)\fP function and uses the same calling
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semantics. \fIlibssh2_sftp_read(3)\fP will attempt to read as much as possible
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however it may not fill all of buffer if the file pointer reaches the end or
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if further reads would cause the socket to block.
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\fIhandle\fP is the SFTP File Handle as returned by \fIlibssh2_sftp_open(3)\fP.
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\fIbuffer\fP is a pointer to a pre-allocated buffer of at least
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\fIbuffer_maxlen\fP bytes to read data into.
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.SH RETURN VALUE
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Number of bytes actually populated into buffer, or negative on failure. It
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returns LIBSSH2CHANNEL_EAGAIN when it would otherwise block. While
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LIBSSH2CHANNEL_EAGAIN is a negative number, it isn't really a failure per se.
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.SH "SEE ALSO"
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.BR libssh2_sftp_read(3)
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.BR libssh2_sftp_open(3)
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