--- embedaddon/rsync/receiver.c 2012/02/17 15:09:30 1.1 +++ embedaddon/rsync/receiver.c 2016/11/01 09:54:32 1.1.1.3 @@ -3,7 +3,7 @@ * * Copyright (C) 1996-2000 Andrew Tridgell * Copyright (C) 1996 Paul Mackerras - * Copyright (C) 2003-2009 Wayne Davison + * Copyright (C) 2003-2015 Wayne Davison * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -20,17 +20,17 @@ */ #include "rsync.h" +#include "inums.h" -extern int verbose; extern int dry_run; extern int do_xfers; extern int am_root; extern int am_server; -extern int do_progress; extern int inc_recurse; extern int log_before_transfer; extern int stdout_format_has_i; extern int logfile_format_has_i; +extern int want_xattr_optim; extern int csum_length; extern int read_batch; extern int write_batch; @@ -46,18 +46,24 @@ extern int cleanup_got_literal; extern int remove_source_files; extern int append_mode; extern int sparse_files; +extern int preallocate_files; extern int keep_partial; +extern int checksum_len; extern int checksum_seed; extern int inplace; +extern int allowed_lull; extern int delay_updates; extern mode_t orig_umask; extern struct stats stats; extern char *tmpdir; extern char *partial_dir; extern char *basis_dir[MAX_BASIS_DIRS+1]; +extern char sender_file_sum[MAX_DIGEST_LEN]; extern struct file_list *cur_flist, *first_flist, *dir_flist; -extern struct filter_list_struct daemon_filter_list; +extern filter_rule_list daemon_filter_list; +BOOL want_progress_now; + static struct bitbag *delayed_bits = NULL; static int phase = 0, redoing = 0; static flist_ndx_list batch_redo_list; @@ -66,6 +72,8 @@ static int updating_basis_or_equiv; #define TMPNAME_SUFFIX ".XXXXXX" #define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1) +#define MAX_UNIQUE_NUMBER 999999 +#define MAX_UNIQUE_LOOP 100 /* get_tmpname() - create a tmp filename for a given filename * @@ -79,12 +87,17 @@ static int updating_basis_or_equiv; * the basename basically becomes 8 characters longer. In such a case, the * original name is shortened sufficiently to make it all fit. * + * If the make_unique arg is True, the XXXXXX string is replaced with a unique + * string that doesn't exist at the time of the check. This is intended to be + * used for creating hard links, symlinks, devices, and special files, since + * normal files should be handled by mkstemp() for safety. + * * Of course, the only reason the file is based on the original name is to * make it easier to figure out what purpose a temp file is serving when a * transfer is in progress. */ -int get_tmpname(char *fnametmp, const char *fname) +int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique) { - int maxname, added, length = 0; + int maxname, length = 0; const char *f; char *suf; @@ -103,34 +116,69 @@ int get_tmpname(char *fnametmp, const char *fname) } } else f = fname; - fnametmp[length++] = '.'; + if (!tmpdir) { /* using a tmpdir avoids the leading dot on our temp names */ + if (*f == '.') /* avoid an extra leading dot for OS X's sake */ + f++; + fnametmp[length++] = '.'; + } + /* The maxname value is bufsize, and includes space for the '\0'. * NAME_MAX needs an extra -1 for the name's leading dot. */ maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN, NAME_MAX - 1 - TMPNAME_SUFFIX_LEN); - if (maxname < 1) { + if (maxname < 0) { rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname); fnametmp[0] = '\0'; return 0; } - added = strlcpy(fnametmp + length, f, maxname); - if (added >= maxname) - added = maxname - 1; - suf = fnametmp + length + added; + if (maxname) { + int added = strlcpy(fnametmp + length, f, maxname); + if (added >= maxname) + added = maxname - 1; + suf = fnametmp + length + added; - /* Trim any dangling high-bit chars if the first-trimmed char (if any) is - * also a high-bit char, just in case we cut into a multi-byte sequence. - * We are guaranteed to stop because of the leading '.' we added. */ - if ((int)f[added] & 0x80) { - while ((int)suf[-1] & 0x80) + /* Trim any dangling high-bit chars if the first-trimmed char (if any) is + * also a high-bit char, just in case we cut into a multi-byte sequence. + * We are guaranteed to stop because of the leading '.' we added. */ + if ((int)f[added] & 0x80) { + while ((int)suf[-1] & 0x80) + suf--; + } + /* trim one trailing dot before our suffix's dot */ + if (suf[-1] == '.') suf--; - } + } else + suf = fnametmp + length - 1; /* overwrite the leading dot with suffix's dot */ - memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1); + if (make_unique) { + static unsigned counter_limit; + unsigned counter; + if (!counter_limit) { + counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP; + if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP) + counter_limit = MAX_UNIQUE_LOOP; + } + counter = counter_limit - MAX_UNIQUE_LOOP; + + /* This doesn't have to be very good because we don't need + * to worry about someone trying to guess the values: all + * a conflict will do is cause a device, special file, hard + * link, or symlink to fail to be created. Also: avoid + * using mktemp() due to gcc's annoying warning. */ + while (1) { + snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter); + if (access(fnametmp, 0) < 0) + break; + if (++counter >= counter_limit) + return 0; + } + } else + memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1); + return 1; } @@ -143,7 +191,7 @@ int open_tmpfile(char *fnametmp, const char *fname, st int fd; mode_t added_perms; - if (!get_tmpname(fnametmp, fname)) + if (!get_tmpname(fnametmp, fname, False)) return -1; if (am_root < 0) { @@ -166,9 +214,9 @@ int open_tmpfile(char *fnametmp, const char *fname, st * information should have been previously transferred, but that may * not be the case with -R */ if (fd == -1 && relative_paths && errno == ENOENT - && create_directory_path(fnametmp) == 0) { + && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) { /* Get back to name with XXXXXX in it. */ - get_tmpname(fnametmp, fname); + get_tmpname(fnametmp, fname, False); fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS); } #endif @@ -186,24 +234,39 @@ static int receive_data(int f_in, char *fname_r, int f const char *fname, int fd, OFF_T total_size) { static char file_sum1[MAX_DIGEST_LEN]; - static char file_sum2[MAX_DIGEST_LEN]; struct map_struct *mapbuf; struct sum_struct sum; - int32 len, sum_len; + int32 len; OFF_T offset = 0; OFF_T offset2; char *data; int32 i; char *map = NULL; +#ifdef SUPPORT_PREALLOCATION +#ifdef PREALLOCATE_NEEDS_TRUNCATE + OFF_T preallocated_len = 0; +#endif + if (preallocate_files && fd != -1 && total_size > 0 && (!inplace || total_size > size_r)) { + /* Try to preallocate enough space for file's eventual length. Can + * reduce fragmentation on filesystems like ext4, xfs, and NTFS. */ + if (do_fallocate(fd, 0, total_size) == 0) { +#ifdef PREALLOCATE_NEEDS_TRUNCATE + preallocated_len = total_size; +#endif + } else + rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname)); + } +#endif + read_sum_head(f_in, &sum); if (fd_r >= 0 && size_r > 0) { int32 read_size = MAX(sum.blength * 2, 16*1024); mapbuf = map_file(fd_r, size_r, read_size, sum.blength); - if (verbose > 2) { - rprintf(FINFO, "recv mapped %s of size %.0f\n", - fname_r, (double)size_r); + if (DEBUG_GTE(DELTASUM, 2)) { + rprintf(FINFO, "recv mapped %s of size %s\n", + fname_r, big_num(size_r)); } } else mapbuf = NULL; @@ -215,9 +278,9 @@ static int receive_data(int f_in, char *fname_r, int f sum.flength = (OFF_T)sum.count * sum.blength; if (sum.remainder) sum.flength -= sum.blength - sum.remainder; - if (append_mode == 2) { + if (append_mode == 2 && mapbuf) { for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) { - if (do_progress) + if (INFO_GTE(PROGRESS, 1)) show_progress(offset, total_size); sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE), CHUNK_SIZE); @@ -225,27 +288,35 @@ static int receive_data(int f_in, char *fname_r, int f } if (offset < sum.flength) { int32 len = (int32)(sum.flength - offset); - if (do_progress) + if (INFO_GTE(PROGRESS, 1)) show_progress(offset, total_size); sum_update(map_ptr(mapbuf, offset, len), len); } } offset = sum.flength; if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) { - rsyserr(FERROR_XFER, errno, "lseek of %s returned %.0f, not %.0f", - full_fname(fname), (double)j, (double)offset); + rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s", + full_fname(fname), big_num(j), big_num(offset)); exit_cleanup(RERR_FILEIO); } } while ((i = recv_token(f_in, &data)) != 0) { - if (do_progress) + if (INFO_GTE(PROGRESS, 1)) show_progress(offset, total_size); + else if (want_progress_now) { + rprintf(FINFO, "%s\n", fname); + end_progress(offset); + } + want_progress_now = False; + if (allowed_lull) + maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER); + if (i > 0) { - if (verbose > 3) { - rprintf(FINFO,"data recv %d at %.0f\n", - i,(double)offset); + if (DEBUG_GTE(DELTASUM, 3)) { + rprintf(FINFO,"data recv %d at %s\n", + i, big_num(offset)); } stats.literal_data += i; @@ -267,10 +338,10 @@ static int receive_data(int f_in, char *fname_r, int f stats.matched_data += len; - if (verbose > 3) { + if (DEBUG_GTE(DELTASUM, 3)) { rprintf(FINFO, - "chunk[%d] of size %ld at %.0f offset=%.0f%s\n", - i, (long)len, (double)offset2, (double)offset, + "chunk[%d] of size %ld at %s offset=%s%s\n", + i, (long)len, big_num(offset2), big_num(offset), updating_basis_or_equiv && offset == offset2 ? " (seek)" : ""); } @@ -289,9 +360,9 @@ static int receive_data(int f_in, char *fname_r, int f offset += len; if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) { rsyserr(FERROR_XFER, errno, - "lseek of %s returned %.0f, not %.0f", + "lseek of %s returned %s, not %s", full_fname(fname), - (double)pos, (double)offset); + big_num(pos), big_num(offset)); exit_cleanup(RERR_FILEIO); } continue; @@ -306,13 +377,20 @@ static int receive_data(int f_in, char *fname_r, int f goto report_write_error; #ifdef HAVE_FTRUNCATE - if (inplace && fd != -1 && do_ftruncate(fd, offset) < 0) { + /* inplace: New data could be shorter than old data. + * preallocate_files: total_size could have been an overestimate. + * Cut off any extra preallocated zeros from dest file. */ + if ((inplace +#ifdef PREALLOCATE_NEEDS_TRUNCATE + || preallocated_len > offset +#endif + ) && fd != -1 && do_ftruncate(fd, offset) < 0) { rsyserr(FERROR_XFER, errno, "ftruncate failed on %s", full_fname(fname)); } #endif - if (do_progress) + if (INFO_GTE(PROGRESS, 1)) end_progress(total_size); if (fd != -1 && offset > 0 && sparse_end(fd, offset) != 0) { @@ -322,15 +400,16 @@ static int receive_data(int f_in, char *fname_r, int f exit_cleanup(RERR_FILEIO); } - sum_len = sum_end(file_sum1); + if (sum_end(file_sum1) != checksum_len) + overflow_exit("checksum_len"); /* Impossible... */ if (mapbuf) unmap_file(mapbuf); - read_buf(f_in, file_sum2, sum_len); - if (verbose > 2) + read_buf(f_in, sender_file_sum, checksum_len); + if (DEBUG_GTE(DELTASUM, 2)) rprintf(FINFO,"got file_sum\n"); - if (fd != -1 && memcmp(file_sum1, file_sum2, sum_len) != 0) + if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0) return 0; return 1; } @@ -350,9 +429,9 @@ static void handle_delayed_updates(char *local_name) struct file_struct *file = cur_flist->files[ndx]; fname = local_name ? local_name : f_name(file, NULL); if ((partialptr = partial_dir_fname(fname)) != NULL) { - if (make_backups > 0 && !make_backup(fname)) + if (make_backups > 0 && !make_backup(fname, False)) continue; - if (verbose > 2) { + if (DEBUG_GTE(RECV, 1)) { rprintf(FINFO, "renaming %s to %s\n", partialptr, fname); } @@ -403,16 +482,18 @@ static int we_want_redo(int desired_ndx) return 0; } -static int gen_wants_ndx(int desired_ndx) +static int gen_wants_ndx(int desired_ndx, int flist_num) { static int next_ndx = -1; static int done_cnt = 0; static BOOL got_eof = False; - int flist_num = first_flist->flist_num; if (got_eof) return 0; + /* TODO: integrate gen-reading I/O into perform_io() so this is not needed? */ + io_flush(FULL_FLUSH); + while (next_ndx < desired_ndx) { if (inc_recurse && flist_num <= done_cnt) return 0; @@ -440,7 +521,7 @@ static int gen_wants_ndx(int desired_ndx) * main routine for receiver process. * * Receiver process runs on the same host as the generator process. */ -int recv_files(int f_in, char *local_name) +int recv_files(int f_in, int f_out, char *local_name) { int fd1,fd2; STRUCT_STAT st; @@ -452,7 +533,6 @@ int recv_files(int f_in, char *local_name) char fnamecmpbuf[MAXPATHLEN]; uchar fnamecmp_type; struct file_struct *file; - struct stats initial_stats; int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i; enum logcode log_code = log_before_transfer ? FLOG : FINFO; int max_phase = protocol_version >= 29 ? 2 : 1; @@ -462,7 +542,7 @@ int recv_files(int f_in, char *local_name) #endif int ndx, recv_ok; - if (verbose > 2) + if (DEBUG_GTE(RECV, 1)) rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used); if (delay_updates) @@ -472,24 +552,32 @@ int recv_files(int f_in, char *local_name) cleanup_disable(); /* This call also sets cur_flist. */ - ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type, + ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type, xname, &xlen); if (ndx == NDX_DONE) { + if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) { + set_current_file_index(NULL, 0); + end_progress(0); + } if (inc_recurse && first_flist) { - if (read_batch) - gen_wants_ndx(first_flist->used + first_flist->ndx_start); + if (read_batch) { + ndx = first_flist->used + first_flist->ndx_start; + gen_wants_ndx(ndx, first_flist->flist_num); + } flist_free(first_flist); if (first_flist) continue; - } else if (read_batch && first_flist) - gen_wants_ndx(first_flist->used); + } else if (read_batch && first_flist) { + ndx = first_flist->used; + gen_wants_ndx(ndx, first_flist->flist_num); + } if (++phase > max_phase) break; - if (verbose > 2) + if (DEBUG_GTE(RECV, 1)) rprintf(FINFO, "recv_files phase=%d\n", phase); if (phase == 2 && delay_updates) handle_delayed_updates(local_name); - send_msg(MSG_DONE, "", 0, 0); + write_int(f_out, NDX_DONE); continue; } @@ -499,11 +587,12 @@ int recv_files(int f_in, char *local_name) file = dir_flist->files[cur_flist->parent_ndx]; fname = local_name ? local_name : f_name(file, fbuf); - if (verbose > 2) + if (DEBUG_GTE(RECV, 1)) rprintf(FINFO, "recv_files(%s)\n", fname); #ifdef SUPPORT_XATTRS - if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers) + if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers + && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))) recv_xattr_request(file, f_in); #endif @@ -514,6 +603,21 @@ int recv_files(int f_in, char *local_name) && !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE)) set_file_attrs(fname, file, NULL, fname, 0); #endif + if (iflags & ITEM_IS_NEW) { + stats.created_files++; + if (S_ISREG(file->mode)) { + /* Nothing further to count. */ + } else if (S_ISDIR(file->mode)) + stats.created_dirs++; +#ifdef SUPPORT_LINKS + else if (S_ISLNK(file->mode)) + stats.created_symlinks++; +#endif + else if (IS_DEVICE(file->mode)) + stats.created_devices++; + else + stats.created_specials++; + } continue; } if (phase == 2) { @@ -543,11 +647,13 @@ int recv_files(int f_in, char *local_name) csum_length = SHORT_SUM_LENGTH; redoing = 0; } + if (iflags & ITEM_IS_NEW) + stats.created_files++; } - if (!am_server && do_progress) + if (!am_server && INFO_GTE(PROGRESS, 1)) set_current_file_index(file, ndx); - stats.num_transferred_files++; + stats.xferred_files++; stats.total_transferred_size += F_LENGTH(file); cleanup_got_literal = 0; @@ -561,7 +667,7 @@ int recv_files(int f_in, char *local_name) if (read_batch) { int wanted = redoing ? we_want_redo(ndx) - : gen_wants_ndx(ndx); + : gen_wants_ndx(ndx, cur_flist->flist_num); if (!wanted) { rprintf(FINFO, "(Skipping batched update for%s \"%s\")\n", @@ -573,16 +679,20 @@ int recv_files(int f_in, char *local_name) } } + remember_initial_stats(); + if (!do_xfers) { /* log the transfer */ - log_item(FCLIENT, file, &stats, iflags, NULL); + log_item(FCLIENT, file, iflags, NULL); if (read_batch) discard_receive_data(f_in, F_LENGTH(file)); continue; } if (write_batch < 0) { - log_item(FCLIENT, file, &stats, iflags, NULL); + log_item(FCLIENT, file, iflags, NULL); if (!am_server) discard_receive_data(f_in, F_LENGTH(file)); + if (inc_recurse) + send_msg_int(MSG_SUCCESS, ndx); continue; } @@ -601,21 +711,26 @@ int recv_files(int f_in, char *local_name) break; case FNAMECMP_FUZZY: if (file->dirname) { - pathjoin(fnamecmpbuf, MAXPATHLEN, - file->dirname, xname); + pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname); fnamecmp = fnamecmpbuf; } else fnamecmp = xname; break; default: - if (fnamecmp_type >= basis_dir_cnt) { + if (fnamecmp_type > FNAMECMP_FUZZY && fnamecmp_type-FNAMECMP_FUZZY <= basis_dir_cnt) { + fnamecmp_type -= FNAMECMP_FUZZY + 1; + if (file->dirname) { + stringjoin(fnamecmpbuf, sizeof fnamecmpbuf, + basis_dir[fnamecmp_type], "/", file->dirname, "/", xname, NULL); + } else + pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], xname); + } else if (fnamecmp_type >= basis_dir_cnt) { rprintf(FERROR, "invalid basis_dir index: %d.\n", fnamecmp_type); exit_cleanup(RERR_PROTOCOL); - } - pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, - basis_dir[fnamecmp_type], fname); + } else + pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], fname); fnamecmp = fnamecmpbuf; break; } @@ -638,8 +753,6 @@ int recv_files(int f_in, char *local_name) fnamecmp = fname; } - initial_stats = stats; - /* open the file */ fd1 = do_open(fnamecmp, O_RDONLY, 0); @@ -716,7 +829,8 @@ int recv_files(int f_in, char *local_name) if (fd2 == -1) { rsyserr(FERROR_XFER, errno, "open %s failed", full_fname(fname)); - } + } else if (updating_basis_or_equiv) + cleanup_set(NULL, NULL, file, fd1, fd2); } else { fd2 = open_tmpfile(fnametmp, fname, file); if (fd2 != -1) @@ -734,15 +848,15 @@ int recv_files(int f_in, char *local_name) /* log the transfer */ if (log_before_transfer) - log_item(FCLIENT, file, &initial_stats, iflags, NULL); - else if (!am_server && verbose && do_progress) + log_item(FCLIENT, file, iflags, NULL); + else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1)) rprintf(FINFO, "%s\n", fname); /* recv file data */ recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size, fname, fd2, F_LENGTH(file)); - log_item(log_code, file, &initial_stats, iflags, NULL); + log_item(log_code, file, iflags, NULL); if (fd1 != -1) close(fd1); @@ -796,7 +910,7 @@ int recv_files(int f_in, char *local_name) break; case 0: { enum logcode msgtype = redoing ? FERROR_XFER : FWARNING; - if (msgtype == FERROR_XFER || verbose) { + if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) { char *errstr, *redostr, *keptstr; if (!(keep_partial && partialptr) && !inplace) keptstr = "discarded"; @@ -838,7 +952,7 @@ int recv_files(int f_in, char *local_name) if (phase == 2 && delay_updates) /* for protocol_version < 29 */ handle_delayed_updates(local_name); - if (verbose > 2) + if (DEBUG_GTE(RECV, 1)) rprintf(FINFO,"recv_files finished\n"); return 0;