Convenience macro for libssh2_sftp_open_ex(3) calls
#include <libssh2.h>
LIBSSH2_SFTP_HANDLE * libssh2_sftp_open(LIBSSH2_SFTP *sftp, const char *path, unsigned long flags, long mode);
This is a macro defined in a public libssh2 header file that is using the underlying function libssh2_sftp_open_ex(3).