/*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*- * * librsync -- the library for network deltas * $Id$ * * Copyright (C) 2000, 2001 by Martin Pool <mbp@samba.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* | Is it possible that software is not | like anything else, that it is meant | to be discarded: that the whole point | is to always see it as a soap bubble? | -- Alan Perlis */ #include <config_rsync.h> #include <assert.h> #include <stdlib.h> #include <unistd.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <rsync.h> #include "trace.h" #include "fileutil.h" #include "sumset.h" #include "job.h" #include "buf.h" #include "whole.h" #include "util.h" /** * Run a job continuously, with input to/from the two specified files. * The job should already be set up, and must be free by the caller * after return. * * Buffers of ::rs_inbuflen and ::rs_outbuflen are allocated for * temporary storage. * * \param in_file Source of input bytes, or NULL if the input buffer * should not be filled. * * \return RS_DONE if the job completed, or otherwise an error result. */ rs_result rs_whole_run(rs_job_t *job, FILE *in_file, FILE *out_file) { rs_buffers_t buf; rs_result result; rs_filebuf_t *in_fb = NULL, *out_fb = NULL; if (in_file) in_fb = rs_filebuf_new(in_file, rs_inbuflen); if (out_file) out_fb = rs_filebuf_new(out_file, rs_outbuflen); result = rs_job_drive(job, &buf, in_fb ? rs_infilebuf_fill : NULL, in_fb, out_fb ? rs_outfilebuf_drain : NULL, out_fb); if (in_fb) rs_filebuf_free(in_fb); if (out_fb) rs_filebuf_free(out_fb); return result; } /** * Generate the signature of a basis file, and write it out to * another. * * \param new_block_len block size for signature generation, in bytes * * \param strong_len truncated length of strong checksums, in bytes * * \sa rs_sig_begin() */ rs_result rs_sig_file(FILE *old_file, FILE *sig_file, size_t new_block_len, size_t strong_len, rs_stats_t *stats) { rs_job_t *job; rs_result r; job = rs_sig_begin(new_block_len, strong_len); r = rs_whole_run(job, old_file, sig_file); if (stats) memcpy(stats, &job->stats, sizeof *stats); rs_job_free(job); return r; } /** * Load signatures from a signature file into memory. Return a * pointer to the newly allocated structure in SUMSET. * * \sa rs_readsig_begin() */ rs_result rs_loadsig_file(FILE *sig_file, rs_signature_t **sumset, rs_stats_t *stats) { rs_job_t *job; rs_result r; job = rs_loadsig_begin(sumset); r = rs_whole_run(job, sig_file, NULL); if (stats) memcpy(stats, &job->stats, sizeof *stats); rs_job_free(job); return r; } rs_result rs_delta_file(rs_signature_t *sig, FILE *new_file, FILE *delta_file, rs_stats_t *stats) { rs_job_t *job; rs_result r; job = rs_delta_begin(sig); r = rs_whole_run(job, new_file, delta_file); if (stats) memcpy(stats, &job->stats, sizeof *stats); rs_job_free(job); return r; } rs_result rs_patch_file(FILE *basis_file, FILE *delta_file, FILE *new_file, rs_stats_t *stats) { rs_job_t *job; rs_result r; job = rs_patch_begin(rs_file_copy_cb, basis_file); r = rs_whole_run(job, delta_file, new_file); if (stats) memcpy(stats, &job->stats, sizeof *stats); rs_job_free(job); return r; }