libssh2_sftp_realpath

#include <libssh2.h>
#include <libssh2_sftp.h>
#define libssh2_sftp_realpath(sftp, path, target, maxlen) \
    libssh2_sftp_symlink_ex((sftp), (path), strlen(path), \
                            (target), (maxlen), \
                            LIBSSH2_SFTP_REALPATH)

This is a macro defined in a public libssh2 header file that is using the underlying function libssh2_sftp_symlink_ex(3).

See libssh2_sftp_symlink_ex(3)

See libssh2_sftp_symlink_ex(3)

libssh2_sftp_symlink_ex(3)