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d8cc8daef9
need...but most of it remains.
954 lines
26 KiB
C
954 lines
26 KiB
C
/*
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* Routines only used by the receiving process.
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*
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* Copyright (C) 1996-2000 Andrew Tridgell
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* Copyright (C) 1996 Paul Mackerras
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* Copyright (C) 2003-2014 Wayne Davison
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, visit the http://fsf.org website.
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*/
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#include "rsync.h"
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#include "inums.h"
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extern int dry_run;
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extern int do_xfers;
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extern int am_root;
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extern int am_server;
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extern int inc_recurse;
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extern int log_before_transfer;
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extern int stdout_format_has_i;
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extern int logfile_format_has_i;
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extern int want_xattr_optim;
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extern int csum_length;
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extern int read_batch;
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extern int write_batch;
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extern int batch_gen_fd;
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extern int protocol_version;
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extern int relative_paths;
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extern int preserve_hard_links;
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extern int preserve_perms;
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extern int preserve_xattrs;
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extern int basis_dir_cnt;
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extern int make_backups;
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extern int cleanup_got_literal;
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extern int remove_source_files;
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extern int append_mode;
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extern int sparse_files;
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extern int preallocate_files;
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extern int keep_partial;
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extern int checksum_len;
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extern int checksum_seed;
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extern int inplace;
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extern int allowed_lull;
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extern int delay_updates;
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extern mode_t orig_umask;
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extern struct stats stats;
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extern char *tmpdir;
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extern char *partial_dir;
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extern char *basis_dir[MAX_BASIS_DIRS+1];
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extern char sender_file_sum[MAX_DIGEST_LEN];
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extern struct file_list *cur_flist, *first_flist, *dir_flist;
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extern filter_rule_list daemon_filter_list;
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static struct bitbag *delayed_bits = NULL;
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static int phase = 0, redoing = 0;
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static flist_ndx_list batch_redo_list;
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/* We're either updating the basis file or an identical copy: */
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static int updating_basis_or_equiv;
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#define TMPNAME_SUFFIX ".XXXXXX"
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#define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
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#define MAX_UNIQUE_NUMBER 999999
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#define MAX_UNIQUE_LOOP 100
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/* get_tmpname() - create a tmp filename for a given filename
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*
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* If a tmpdir is defined, use that as the directory to put it in. Otherwise,
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* the tmp filename is in the same directory as the given name. Note that
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* there may be no directory at all in the given name!
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*
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* The tmp filename is basically the given filename with a dot prepended, and
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* .XXXXXX appended (for mkstemp() to put its unique gunk in). We take care
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* to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
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* the basename basically becomes 8 characters longer. In such a case, the
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* original name is shortened sufficiently to make it all fit.
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*
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* If the make_unique arg is True, the XXXXXX string is replaced with a unique
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* string that doesn't exist at the time of the check. This is intended to be
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* used for creating hard links, symlinks, devices, and special files, since
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* normal files should be handled by mkstemp() for safety.
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*
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* Of course, the only reason the file is based on the original name is to
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* make it easier to figure out what purpose a temp file is serving when a
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* transfer is in progress. */
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int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique)
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{
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int maxname, length = 0;
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const char *f;
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char *suf;
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if (tmpdir) {
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/* Note: this can't overflow, so the return value is safe */
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length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
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fnametmp[length++] = '/';
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}
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if ((f = strrchr(fname, '/')) != NULL) {
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++f;
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if (!tmpdir) {
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length = f - fname;
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/* copy up to and including the slash */
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strlcpy(fnametmp, fname, length + 1);
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}
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} else
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f = fname;
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if (!tmpdir) { /* using a tmpdir avoids the leading dot on our temp names */
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if (*f == '.') /* avoid an extra leading dot for OS X's sake */
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f++;
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fnametmp[length++] = '.';
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}
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/* The maxname value is bufsize, and includes space for the '\0'.
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* NAME_MAX needs an extra -1 for the name's leading dot. */
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maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
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NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
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if (maxname < 0) {
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rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
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fnametmp[0] = '\0';
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return 0;
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}
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if (maxname) {
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int added = strlcpy(fnametmp + length, f, maxname);
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if (added >= maxname)
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added = maxname - 1;
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suf = fnametmp + length + added;
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/* Trim any dangling high-bit chars if the first-trimmed char (if any) is
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* also a high-bit char, just in case we cut into a multi-byte sequence.
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* We are guaranteed to stop because of the leading '.' we added. */
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if ((int)f[added] & 0x80) {
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while ((int)suf[-1] & 0x80)
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suf--;
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}
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/* trim one trailing dot before our suffix's dot */
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if (suf[-1] == '.')
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suf--;
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} else
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suf = fnametmp + length - 1; /* overwrite the leading dot with suffix's dot */
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if (make_unique) {
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static unsigned counter_limit;
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unsigned counter;
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if (!counter_limit) {
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counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP;
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if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP)
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counter_limit = MAX_UNIQUE_LOOP;
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}
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counter = counter_limit - MAX_UNIQUE_LOOP;
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/* This doesn't have to be very good because we don't need
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* to worry about someone trying to guess the values: all
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* a conflict will do is cause a device, special file, hard
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* link, or symlink to fail to be created. Also: avoid
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* using mktemp() due to gcc's annoying warning. */
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while (1) {
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snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter);
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if (access(fnametmp, 0) < 0)
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break;
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if (++counter >= counter_limit)
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return 0;
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}
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} else
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memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
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return 1;
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}
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/* Opens a temporary file for writing.
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* Success: Writes name into fnametmp, returns fd.
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* Failure: Clobbers fnametmp, returns -1.
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* Calling cleanup_set() is the caller's job. */
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int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
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{
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int fd;
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mode_t added_perms;
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if (!get_tmpname(fnametmp, fname, False))
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return -1;
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if (am_root < 0) {
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/* For --fake-super, the file must be useable by the copying
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* user, just like it would be for root. */
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added_perms = S_IRUSR|S_IWUSR;
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} else {
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/* For a normal copy, we need to be able to tweak things like xattrs. */
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added_perms = S_IWUSR;
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}
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/* We initially set the perms without the setuid/setgid bits or group
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* access to ensure that there is no race condition. They will be
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* correctly updated after the right owner and group info is set.
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* (Thanks to snabb@epipe.fi for pointing this out.) */
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fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
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#if 0
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/* In most cases parent directories will already exist because their
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* information should have been previously transferred, but that may
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* not be the case with -R */
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if (fd == -1 && relative_paths && errno == ENOENT
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&& make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
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/* Get back to name with XXXXXX in it. */
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get_tmpname(fnametmp, fname, False);
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fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
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}
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#endif
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if (fd == -1) {
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rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
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full_fname(fnametmp));
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return -1;
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}
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return fd;
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}
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static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
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const char *fname, int fd, OFF_T total_size)
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{
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static char file_sum1[MAX_DIGEST_LEN];
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struct map_struct *mapbuf;
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struct sum_struct sum;
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int32 len;
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OFF_T offset = 0;
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OFF_T offset2;
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char *data;
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int32 i;
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char *map = NULL;
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#ifdef SUPPORT_PREALLOCATION
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#ifdef PREALLOCATE_NEEDS_TRUNCATE
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OFF_T preallocated_len = 0;
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#endif
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if (preallocate_files && fd != -1 && total_size > 0 && (!inplace || total_size > size_r)) {
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/* Try to preallocate enough space for file's eventual length. Can
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* reduce fragmentation on filesystems like ext4, xfs, and NTFS. */
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if (do_fallocate(fd, 0, total_size) == 0) {
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#ifdef PREALLOCATE_NEEDS_TRUNCATE
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preallocated_len = total_size;
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#endif
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} else
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rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname));
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}
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#endif
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read_sum_head(f_in, &sum);
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if (fd_r >= 0 && size_r > 0) {
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int32 read_size = MAX(sum.blength * 2, 16*1024);
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mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
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if (DEBUG_GTE(DELTASUM, 2)) {
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rprintf(FINFO, "recv mapped %s of size %s\n",
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fname_r, big_num(size_r));
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}
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} else
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mapbuf = NULL;
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sum_init(checksum_seed);
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if (append_mode > 0) {
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OFF_T j;
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sum.flength = (OFF_T)sum.count * sum.blength;
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if (sum.remainder)
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sum.flength -= sum.blength - sum.remainder;
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if (append_mode == 2 && mapbuf) {
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for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
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if (INFO_GTE(PROGRESS, 1))
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show_progress(offset, total_size);
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sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
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CHUNK_SIZE);
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offset = j;
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}
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if (offset < sum.flength) {
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int32 len = (int32)(sum.flength - offset);
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if (INFO_GTE(PROGRESS, 1))
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show_progress(offset, total_size);
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sum_update(map_ptr(mapbuf, offset, len), len);
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}
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}
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offset = sum.flength;
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if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
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rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
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full_fname(fname), big_num(j), big_num(offset));
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exit_cleanup(RERR_FILEIO);
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}
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}
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while ((i = recv_token(f_in, &data)) != 0) {
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if (INFO_GTE(PROGRESS, 1))
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show_progress(offset, total_size);
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if (allowed_lull)
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maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
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if (i > 0) {
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if (DEBUG_GTE(DELTASUM, 3)) {
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rprintf(FINFO,"data recv %d at %s\n",
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i, big_num(offset));
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}
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stats.literal_data += i;
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cleanup_got_literal = 1;
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sum_update(data, i);
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if (fd != -1 && write_file(fd,data,i) != i)
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goto report_write_error;
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offset += i;
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continue;
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}
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i = -(i+1);
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offset2 = i * (OFF_T)sum.blength;
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len = sum.blength;
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if (i == (int)sum.count-1 && sum.remainder != 0)
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len = sum.remainder;
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stats.matched_data += len;
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if (DEBUG_GTE(DELTASUM, 3)) {
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rprintf(FINFO,
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"chunk[%d] of size %ld at %s offset=%s%s\n",
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i, (long)len, big_num(offset2), big_num(offset),
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updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
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}
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if (mapbuf) {
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map = map_ptr(mapbuf,offset2,len);
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see_token(map, len);
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sum_update(map, len);
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}
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if (updating_basis_or_equiv) {
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if (offset == offset2 && fd != -1) {
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OFF_T pos;
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if (flush_write_file(fd) < 0)
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goto report_write_error;
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offset += len;
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if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
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rsyserr(FERROR_XFER, errno,
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"lseek of %s returned %s, not %s",
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full_fname(fname),
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big_num(pos), big_num(offset));
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exit_cleanup(RERR_FILEIO);
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}
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continue;
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}
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}
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if (fd != -1 && map && write_file(fd, map, len) != (int)len)
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goto report_write_error;
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offset += len;
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}
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if (flush_write_file(fd) < 0)
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goto report_write_error;
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#ifdef HAVE_FTRUNCATE
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/* inplace: New data could be shorter than old data.
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* preallocate_files: total_size could have been an overestimate.
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* Cut off any extra preallocated zeros from dest file. */
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if ((inplace
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#ifdef PREALLOCATE_NEEDS_TRUNCATE
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|| preallocated_len > offset
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#endif
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) && fd != -1 && do_ftruncate(fd, offset) < 0) {
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rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
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full_fname(fname));
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}
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#endif
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if (INFO_GTE(PROGRESS, 1))
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end_progress(total_size);
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if (fd != -1 && offset > 0 && sparse_end(fd, offset) != 0) {
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report_write_error:
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rsyserr(FERROR_XFER, errno, "write failed on %s",
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full_fname(fname));
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exit_cleanup(RERR_FILEIO);
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}
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if (sum_end(file_sum1) != checksum_len)
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overflow_exit("checksum_len"); /* Impossible... */
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if (mapbuf)
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unmap_file(mapbuf);
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read_buf(f_in, sender_file_sum, checksum_len);
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if (DEBUG_GTE(DELTASUM, 2))
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rprintf(FINFO,"got file_sum\n");
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if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
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return 0;
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return 1;
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}
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static void discard_receive_data(int f_in, OFF_T length)
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{
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receive_data(f_in, NULL, -1, 0, NULL, -1, length);
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}
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static void handle_delayed_updates(char *local_name)
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{
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char *fname, *partialptr;
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int ndx;
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for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
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struct file_struct *file = cur_flist->files[ndx];
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fname = local_name ? local_name : f_name(file, NULL);
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if ((partialptr = partial_dir_fname(fname)) != NULL) {
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if (make_backups > 0 && !make_backup(fname, False))
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continue;
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if (DEBUG_GTE(RECV, 1)) {
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rprintf(FINFO, "renaming %s to %s\n",
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partialptr, fname);
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}
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/* We don't use robust_rename() here because the
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* partial-dir must be on the same drive. */
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if (do_rename(partialptr, fname) < 0) {
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rsyserr(FERROR_XFER, errno,
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"rename failed for %s (from %s)",
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full_fname(fname), partialptr);
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} else {
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if (remove_source_files
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|| (preserve_hard_links && F_IS_HLINKED(file)))
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send_msg_int(MSG_SUCCESS, ndx);
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handle_partial_dir(partialptr, PDIR_DELETE);
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}
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}
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}
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}
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static void no_batched_update(int ndx, BOOL is_redo)
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{
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struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
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struct file_struct *file = flist->files[ndx - flist->ndx_start];
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rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
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is_redo ? " resend of" : "", f_name(file, NULL));
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if (inc_recurse && !dry_run)
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send_msg_int(MSG_NO_SEND, ndx);
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}
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static int we_want_redo(int desired_ndx)
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{
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static int redo_ndx = -1;
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while (redo_ndx < desired_ndx) {
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if (redo_ndx >= 0)
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no_batched_update(redo_ndx, True);
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if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
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return 0;
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}
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if (redo_ndx == desired_ndx) {
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redo_ndx = -1;
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return 1;
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}
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return 0;
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
if (next_ndx >= 0)
|
|
no_batched_update(next_ndx, False);
|
|
if ((next_ndx = read_int(batch_gen_fd)) < 0) {
|
|
if (inc_recurse) {
|
|
done_cnt++;
|
|
continue;
|
|
}
|
|
got_eof = True;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (next_ndx == desired_ndx) {
|
|
next_ndx = -1;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* main routine for receiver process.
|
|
*
|
|
* Receiver process runs on the same host as the generator process. */
|
|
int recv_files(int f_in, int f_out, char *local_name)
|
|
{
|
|
int fd1,fd2;
|
|
STRUCT_STAT st;
|
|
int iflags, xlen;
|
|
char *fname, fbuf[MAXPATHLEN];
|
|
char xname[MAXPATHLEN];
|
|
char fnametmp[MAXPATHLEN];
|
|
char *fnamecmp, *partialptr;
|
|
char fnamecmpbuf[MAXPATHLEN];
|
|
uchar fnamecmp_type;
|
|
struct file_struct *file;
|
|
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;
|
|
int dflt_perms = (ACCESSPERMS & ~orig_umask);
|
|
#ifdef SUPPORT_ACLS
|
|
const char *parent_dirname = "";
|
|
#endif
|
|
int ndx, recv_ok;
|
|
|
|
if (DEBUG_GTE(RECV, 1))
|
|
rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
|
|
|
|
if (delay_updates)
|
|
delayed_bits = bitbag_create(cur_flist->used + 1);
|
|
|
|
while (1) {
|
|
cleanup_disable();
|
|
|
|
/* This call also sets cur_flist. */
|
|
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) {
|
|
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) {
|
|
ndx = first_flist->used;
|
|
gen_wants_ndx(ndx, first_flist->flist_num);
|
|
}
|
|
if (++phase > max_phase)
|
|
break;
|
|
if (DEBUG_GTE(RECV, 1))
|
|
rprintf(FINFO, "recv_files phase=%d\n", phase);
|
|
if (phase == 2 && delay_updates)
|
|
handle_delayed_updates(local_name);
|
|
write_int(f_out, NDX_DONE);
|
|
continue;
|
|
}
|
|
|
|
if (ndx - cur_flist->ndx_start >= 0)
|
|
file = cur_flist->files[ndx - cur_flist->ndx_start];
|
|
else
|
|
file = dir_flist->files[cur_flist->parent_ndx];
|
|
fname = local_name ? local_name : f_name(file, fbuf);
|
|
|
|
if (DEBUG_GTE(RECV, 1))
|
|
rprintf(FINFO, "recv_files(%s)\n", fname);
|
|
|
|
#ifdef SUPPORT_XATTRS
|
|
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
|
|
|
|
if (!(iflags & ITEM_TRANSFER)) {
|
|
maybe_log_item(file, iflags, itemizing, xname);
|
|
#ifdef SUPPORT_XATTRS
|
|
if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
|
|
&& !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) {
|
|
rprintf(FERROR,
|
|
"got transfer request in phase 2 [%s]\n",
|
|
who_am_i());
|
|
exit_cleanup(RERR_PROTOCOL);
|
|
}
|
|
|
|
if (file->flags & FLAG_FILE_SENT) {
|
|
if (csum_length == SHORT_SUM_LENGTH) {
|
|
if (keep_partial && !partial_dir)
|
|
make_backups = -make_backups; /* prevents double backup */
|
|
if (append_mode)
|
|
sparse_files = -sparse_files;
|
|
append_mode = -append_mode;
|
|
csum_length = SUM_LENGTH;
|
|
redoing = 1;
|
|
}
|
|
} else {
|
|
if (csum_length != SHORT_SUM_LENGTH) {
|
|
if (keep_partial && !partial_dir)
|
|
make_backups = -make_backups;
|
|
if (append_mode)
|
|
sparse_files = -sparse_files;
|
|
append_mode = -append_mode;
|
|
csum_length = SHORT_SUM_LENGTH;
|
|
redoing = 0;
|
|
}
|
|
if (iflags & ITEM_IS_NEW)
|
|
stats.created_files++;
|
|
}
|
|
|
|
if (!am_server && INFO_GTE(PROGRESS, 1))
|
|
set_current_file_index(file, ndx);
|
|
stats.xferred_files++;
|
|
stats.total_transferred_size += F_LENGTH(file);
|
|
|
|
cleanup_got_literal = 0;
|
|
|
|
if (daemon_filter_list.head
|
|
&& check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
|
|
rprintf(FERROR, "attempt to hack rsync failed.\n");
|
|
exit_cleanup(RERR_PROTOCOL);
|
|
}
|
|
|
|
if (read_batch) {
|
|
int wanted = redoing
|
|
? we_want_redo(ndx)
|
|
: gen_wants_ndx(ndx, cur_flist->flist_num);
|
|
if (!wanted) {
|
|
rprintf(FINFO,
|
|
"(Skipping batched update for%s \"%s\")\n",
|
|
redoing ? " resend of" : "",
|
|
fname);
|
|
discard_receive_data(f_in, F_LENGTH(file));
|
|
file->flags |= FLAG_FILE_SENT;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (!log_before_transfer)
|
|
remember_initial_stats();
|
|
|
|
if (!do_xfers) { /* log the transfer */
|
|
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, iflags, NULL);
|
|
if (!am_server)
|
|
discard_receive_data(f_in, F_LENGTH(file));
|
|
if (inc_recurse)
|
|
send_msg_int(MSG_SUCCESS, ndx);
|
|
continue;
|
|
}
|
|
|
|
partialptr = partial_dir ? partial_dir_fname(fname) : fname;
|
|
|
|
if (protocol_version >= 29) {
|
|
switch (fnamecmp_type) {
|
|
case FNAMECMP_FNAME:
|
|
fnamecmp = fname;
|
|
break;
|
|
case FNAMECMP_PARTIAL_DIR:
|
|
fnamecmp = partialptr;
|
|
break;
|
|
case FNAMECMP_BACKUP:
|
|
fnamecmp = get_backup_name(fname);
|
|
break;
|
|
case FNAMECMP_FUZZY:
|
|
if (file->dirname) {
|
|
pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname);
|
|
fnamecmp = fnamecmpbuf;
|
|
} else
|
|
fnamecmp = xname;
|
|
break;
|
|
default:
|
|
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);
|
|
} else
|
|
pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], fname);
|
|
fnamecmp = fnamecmpbuf;
|
|
break;
|
|
}
|
|
if (!fnamecmp || (daemon_filter_list.head
|
|
&& check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
|
|
fnamecmp = fname;
|
|
fnamecmp_type = FNAMECMP_FNAME;
|
|
}
|
|
} else {
|
|
/* Reminder: --inplace && --partial-dir are never
|
|
* enabled at the same time. */
|
|
if (inplace && make_backups > 0) {
|
|
if (!(fnamecmp = get_backup_name(fname)))
|
|
fnamecmp = fname;
|
|
else
|
|
fnamecmp_type = FNAMECMP_BACKUP;
|
|
} else if (partial_dir && partialptr)
|
|
fnamecmp = partialptr;
|
|
else
|
|
fnamecmp = fname;
|
|
}
|
|
|
|
/* open the file */
|
|
fd1 = do_open(fnamecmp, O_RDONLY, 0);
|
|
|
|
if (fd1 == -1 && protocol_version < 29) {
|
|
if (fnamecmp != fname) {
|
|
fnamecmp = fname;
|
|
fd1 = do_open(fnamecmp, O_RDONLY, 0);
|
|
}
|
|
|
|
if (fd1 == -1 && basis_dir[0]) {
|
|
/* pre-29 allowed only one alternate basis */
|
|
pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
|
|
basis_dir[0], fname);
|
|
fnamecmp = fnamecmpbuf;
|
|
fd1 = do_open(fnamecmp, O_RDONLY, 0);
|
|
}
|
|
}
|
|
|
|
updating_basis_or_equiv = inplace
|
|
&& (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
|
|
|
|
if (fd1 == -1) {
|
|
st.st_mode = 0;
|
|
st.st_size = 0;
|
|
} else if (do_fstat(fd1,&st) != 0) {
|
|
rsyserr(FERROR_XFER, errno, "fstat %s failed",
|
|
full_fname(fnamecmp));
|
|
discard_receive_data(f_in, F_LENGTH(file));
|
|
close(fd1);
|
|
if (inc_recurse)
|
|
send_msg_int(MSG_NO_SEND, ndx);
|
|
continue;
|
|
}
|
|
|
|
if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
|
|
/* this special handling for directories
|
|
* wouldn't be necessary if robust_rename()
|
|
* and the underlying robust_unlink could cope
|
|
* with directories
|
|
*/
|
|
rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
|
|
full_fname(fnamecmp));
|
|
discard_receive_data(f_in, F_LENGTH(file));
|
|
close(fd1);
|
|
if (inc_recurse)
|
|
send_msg_int(MSG_NO_SEND, ndx);
|
|
continue;
|
|
}
|
|
|
|
if (fd1 != -1 && !S_ISREG(st.st_mode)) {
|
|
close(fd1);
|
|
fd1 = -1;
|
|
}
|
|
|
|
/* If we're not preserving permissions, change the file-list's
|
|
* mode based on the local permissions and some heuristics. */
|
|
if (!preserve_perms) {
|
|
int exists = fd1 != -1;
|
|
#ifdef SUPPORT_ACLS
|
|
const char *dn = file->dirname ? file->dirname : ".";
|
|
if (parent_dirname != dn
|
|
&& strcmp(parent_dirname, dn) != 0) {
|
|
dflt_perms = default_perms_for_dir(dn);
|
|
parent_dirname = dn;
|
|
}
|
|
#endif
|
|
file->mode = dest_mode(file->mode, st.st_mode,
|
|
dflt_perms, exists);
|
|
}
|
|
|
|
/* We now check to see if we are writing the file "inplace" */
|
|
if (inplace) {
|
|
fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
|
|
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)
|
|
cleanup_set(fnametmp, partialptr, file, fd1, fd2);
|
|
}
|
|
|
|
if (fd2 == -1) {
|
|
discard_receive_data(f_in, F_LENGTH(file));
|
|
if (fd1 != -1)
|
|
close(fd1);
|
|
if (inc_recurse)
|
|
send_msg_int(MSG_NO_SEND, ndx);
|
|
continue;
|
|
}
|
|
|
|
/* log the transfer */
|
|
if (log_before_transfer)
|
|
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, iflags, NULL);
|
|
|
|
if (fd1 != -1)
|
|
close(fd1);
|
|
if (close(fd2) < 0) {
|
|
rsyserr(FERROR, errno, "close failed on %s",
|
|
full_fname(fnametmp));
|
|
exit_cleanup(RERR_FILEIO);
|
|
}
|
|
|
|
if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
|
|
if (partialptr == fname)
|
|
partialptr = NULL;
|
|
if (!finish_transfer(fname, fnametmp, fnamecmp,
|
|
partialptr, file, recv_ok, 1))
|
|
recv_ok = -1;
|
|
else if (fnamecmp == partialptr) {
|
|
do_unlink(partialptr);
|
|
handle_partial_dir(partialptr, PDIR_DELETE);
|
|
}
|
|
} else if (keep_partial && partialptr) {
|
|
if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
|
|
rprintf(FERROR,
|
|
"Unable to create partial-dir for %s -- discarding %s.\n",
|
|
local_name ? local_name : f_name(file, NULL),
|
|
recv_ok ? "completed file" : "partial file");
|
|
do_unlink(fnametmp);
|
|
recv_ok = -1;
|
|
} else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
|
|
file, recv_ok, !partial_dir))
|
|
recv_ok = -1;
|
|
else if (delay_updates && recv_ok) {
|
|
bitbag_set_bit(delayed_bits, ndx);
|
|
recv_ok = 2;
|
|
} else
|
|
partialptr = NULL;
|
|
} else
|
|
do_unlink(fnametmp);
|
|
|
|
cleanup_disable();
|
|
|
|
if (read_batch)
|
|
file->flags |= FLAG_FILE_SENT;
|
|
|
|
switch (recv_ok) {
|
|
case 2:
|
|
break;
|
|
case 1:
|
|
if (remove_source_files || inc_recurse
|
|
|| (preserve_hard_links && F_IS_HLINKED(file)))
|
|
send_msg_int(MSG_SUCCESS, ndx);
|
|
break;
|
|
case 0: {
|
|
enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
|
|
if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
|
|
char *errstr, *redostr, *keptstr;
|
|
if (!(keep_partial && partialptr) && !inplace)
|
|
keptstr = "discarded";
|
|
else if (partial_dir)
|
|
keptstr = "put into partial-dir";
|
|
else
|
|
keptstr = "retained";
|
|
if (msgtype == FERROR_XFER) {
|
|
errstr = "ERROR";
|
|
redostr = "";
|
|
} else {
|
|
errstr = "WARNING";
|
|
redostr = read_batch ? " (may try again)"
|
|
: " (will try again)";
|
|
}
|
|
rprintf(msgtype,
|
|
"%s: %s failed verification -- update %s%s.\n",
|
|
errstr, local_name ? f_name(file, NULL) : fname,
|
|
keptstr, redostr);
|
|
}
|
|
if (!redoing) {
|
|
if (read_batch)
|
|
flist_ndx_push(&batch_redo_list, ndx);
|
|
send_msg_int(MSG_REDO, ndx);
|
|
file->flags |= FLAG_FILE_SENT;
|
|
} else if (inc_recurse)
|
|
send_msg_int(MSG_NO_SEND, ndx);
|
|
break;
|
|
}
|
|
case -1:
|
|
if (inc_recurse)
|
|
send_msg_int(MSG_NO_SEND, ndx);
|
|
break;
|
|
}
|
|
}
|
|
if (make_backups < 0)
|
|
make_backups = -make_backups;
|
|
|
|
if (phase == 2 && delay_updates) /* for protocol_version < 29 */
|
|
handle_delayed_updates(local_name);
|
|
|
|
if (DEBUG_GTE(RECV, 1))
|
|
rprintf(FINFO,"recv_files finished\n");
|
|
|
|
return 0;
|
|
}
|