mirror of
https://github.com/libssh2/libssh2.git
synced 2025-11-03 22:13:11 +03:00
b889b39945
To render in Git webviews as-is, to make it easier to edit, verify,
and to sync up with curl.
- add options to not build the `.3` man pages:
- autotools: `--disable-docs`
- cmake: `LIBSSH2_BUILD_DOCS=OFF`
- building `.3` man pages requires Perl after this patch.
- drop `mansyntax` and the shell / `grep` / GNU `man` tool requirements with it.
- scripts and most logic were copied from curl.
- add `cd2nroff` from curl, with edits to relax curl-specific checks.
- used `nroff2cd` (from curl) to convert from `.3` to `.md`. Then
manually fixed copyrights, inline function references and a couple
of other things.
Credits-to: Daniel Stenberg
Ref: eefcc1bda4
Ref: https://github.com/curl/curl/pull/12730
Ref: https://github.com/libssh2/www/issues/25#issuecomment-3289431671
Closes #1660
60 lines
1.5 KiB
Markdown
60 lines
1.5 KiB
Markdown
---
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c: Copyright (C) The libssh2 project and its contributors.
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SPDX-License-Identifier: BSD-3-Clause
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Title: libssh2_sftp_read
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Section: 3
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Source: libssh2
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See-also:
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- libssh2_sftp_open_ex(3)
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- libssh2_sftp_read(3)
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- read(2)
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---
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# NAME
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libssh2_sftp_read - read data from an SFTP handle
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# SYNOPSIS
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~~~c
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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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~~~
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# DESCRIPTION
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*handle* is the SFTP File Handle as returned by libssh2_sftp_open_ex(3)
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*buffer* is a pointer to a pre-allocated buffer of at least
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*buffer_maxlen* 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 read(2)
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function and uses the same calling semantics. 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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# 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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# ERRORS
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*LIBSSH2_ERROR_ALLOC* - An internal memory allocation call failed.
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*LIBSSH2_ERROR_SOCKET_SEND* - Unable to send data on socket.
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*LIBSSH2_ERROR_SOCKET_TIMEOUT* -
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*LIBSSH2_ERROR_SFTP_PROTOCOL* - 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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