NAME¶
libssh2_sftp_read - read data from an SFTP handle
SYNOPSIS¶
#include <libssh2.h> #include <libssh2_sftp.h>
ssize_t libssh2_sftp_read(LIBSSH2_SFTP_HANDLE *handle, char *buffer, size_t
buffer_maxlen);
DESCRIPTION¶
handle is the SFTP File Handle as returned by
libssh2_sftp_open_ex(3)
buffer is a pointer to a pre-allocated buffer of at least
buffer_maxlen bytes to read data into.
Reads a block of data from an LIBSSH2_SFTP_HANDLE. This method is modelled after
the POSIX
read(2) function and uses the same calling semantics.
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.
RETURN VALUE¶
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.
ERRORS¶
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
LIBSSH2_ERROR_SOCKET_TIMEOUT -
LIBSSH2_ERROR_SFTP_PROTOCOL - An invalid SFTP protocol response was
received on the socket, or an SFTP operation caused an errorcode to be
returned by the server.
SEE ALSO¶
libssh2_sftp_open_ex(3) libssh2_sftp_read(3)