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48 lines
1.6 KiB
Groff
48 lines
1.6 KiB
Groff
.\" Copyright (C) The libssh2 project and its contributors.
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.\" SPDX-License-Identifier: BSD-3-Clause
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.TH libssh2_sftp_read 3 "1 Jun 2007" "libssh2 0.15" "libssh2"
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.SH NAME
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libssh2_sftp_read - read data from an SFTP handle
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.SH SYNOPSIS
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.nf
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#include <libssh2.h>
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#include <libssh2_sftp.h>
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ssize_t
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libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle,
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char *buffer, size_t buffer_maxlen);
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.fi
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.SH DESCRIPTION
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\fIhandle\fP is the SFTP File Handle as returned by
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.BR libssh2_sftp_open_ex(3)
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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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Reads a block of data from an LIBSSH2_SFTP_HANDLE. This method is modelled
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after the POSIX
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.BR read(2)
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function and uses the same calling semantics.
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.BR libssh2_sftp_read(3)
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will attempt to read as much as possible however it may not fill all of buffer
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if the file pointer reaches the end or if further reads would cause the socket
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to block.
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.SH RETURN VALUE
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Number of bytes actually populated into buffer, or negative on failure.
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It returns LIBSSH2_ERROR_EAGAIN when it would otherwise block. While
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LIBSSH2_ERROR_EAGAIN is a negative number, it is not really a failure per se.
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.SH ERRORS
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\fILIBSSH2_ERROR_ALLOC\fP - An internal memory allocation call failed.
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\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
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\fILIBSSH2_ERROR_SOCKET_TIMEOUT\fP -
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\fILIBSSH2_ERROR_SFTP_PROTOCOL\fP - An invalid SFTP protocol response was
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received on the socket, or an SFTP operation caused an errorcode to be
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returned by the server.
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.SH SEE ALSO
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.BR libssh2_sftp_open_ex(3)
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.BR libssh2_sftp_read(3)
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