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-rw-r--r--receiver.c980
1 files changed, 980 insertions, 0 deletions
diff --git a/receiver.c b/receiver.c
new file mode 100644
index 0000000..c9d7e01
--- /dev/null
+++ b/receiver.c
@@ -0,0 +1,980 @@
+/*
+ * Routines only used by the receiving process.
+ *
+ * Copyright (C) 1996-2000 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003-2022 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
+ * the Free Software Foundation; either version 3 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, visit the http://fsf.org website.
+ */
+
+#include "rsync.h"
+#include "inums.h"
+
+extern int dry_run;
+extern int do_xfers;
+extern int am_root;
+extern int am_server;
+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;
+extern int batch_gen_fd;
+extern int protocol_version;
+extern int relative_paths;
+extern int preserve_hard_links;
+extern int preserve_perms;
+extern int write_devices;
+extern int preserve_xattrs;
+extern int do_fsync;
+extern int basis_dir_cnt;
+extern int make_backups;
+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_seed;
+extern int whole_file;
+extern int inplace;
+extern int inplace_partial;
+extern int allowed_lull;
+extern int delay_updates;
+extern BOOL want_progress_now;
+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 filter_rule_list daemon_filter_list;
+extern OFF_T preallocated_len;
+
+extern struct name_num_item *xfer_sum_nni;
+extern int xfer_sum_len;
+
+static struct bitbag *delayed_bits = NULL;
+static int phase = 0, redoing = 0;
+static flist_ndx_list batch_redo_list;
+/* This is non-0 when we are updating the basis file or an identical copy: */
+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
+ *
+ * If a tmpdir is defined, use that as the directory to put it in. Otherwise,
+ * the tmp filename is in the same directory as the given name. Note that
+ * there may be no directory at all in the given name!
+ *
+ * The tmp filename is basically the given filename with a dot prepended, and
+ * .XXXXXX appended (for mkstemp() to put its unique gunk in). We take care
+ * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
+ * 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, BOOL make_unique)
+{
+ int maxname, length = 0;
+ const char *f;
+ char *suf;
+
+ if (tmpdir) {
+ /* Note: this can't overflow, so the return value is safe */
+ length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
+ fnametmp[length++] = '/';
+ }
+
+ if ((f = strrchr(fname, '/')) != NULL) {
+ ++f;
+ if (!tmpdir) {
+ length = f - fname;
+ /* copy up to and including the slash */
+ strlcpy(fnametmp, fname, length + 1);
+ }
+ } else
+ f = fname;
+
+ 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 < 0) {
+ rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
+ fnametmp[0] = '\0';
+ return 0;
+ }
+
+ 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)
+ 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 */
+
+ 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;
+}
+
+/* Opens a temporary file for writing.
+ * Success: Writes name into fnametmp, returns fd.
+ * Failure: Clobbers fnametmp, returns -1.
+ * Calling cleanup_set() is the caller's job. */
+int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
+{
+ int fd;
+ mode_t added_perms;
+
+ if (!get_tmpname(fnametmp, fname, False))
+ return -1;
+
+ if (am_root < 0) {
+ /* For --fake-super, the file must be useable by the copying
+ * user, just like it would be for root. */
+ added_perms = S_IRUSR|S_IWUSR;
+ } else {
+ /* For a normal copy, we need to be able to tweak things like xattrs. */
+ added_perms = S_IWUSR;
+ }
+
+ /* We initially set the perms without the setuid/setgid bits or group
+ * access to ensure that there is no race condition. They will be
+ * correctly updated after the right owner and group info is set.
+ * (Thanks to snabb@epipe.fi for pointing this out.) */
+ fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
+
+#if 0
+ /* In most cases parent directories will already exist because their
+ * information should have been previously transferred, but that may
+ * not be the case with -R */
+ if (fd == -1 && relative_paths && errno == ENOENT
+ && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
+ /* Get back to name with XXXXXX in it. */
+ get_tmpname(fnametmp, fname, False);
+ fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
+ }
+#endif
+
+ if (fd == -1) {
+ rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
+ full_fname(fnametmp));
+ return -1;
+ }
+
+ return fd;
+}
+
+static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
+ const char *fname, int fd, struct file_struct *file, int inplace_sizing)
+{
+ static char file_sum1[MAX_DIGEST_LEN];
+ struct map_struct *mapbuf;
+ struct sum_struct sum;
+ int32 len;
+ OFF_T total_size = F_LENGTH(file);
+ OFF_T offset = 0;
+ OFF_T offset2;
+ char *data;
+ int32 i;
+ char *map = NULL;
+
+#ifdef SUPPORT_PREALLOCATION
+ if (preallocate_files && fd != -1 && total_size > 0 && (!inplace_sizing || 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 ((preallocated_len = do_fallocate(fd, 0, total_size)) < 0)
+ rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname));
+ } else
+#endif
+ if (inplace_sizing) {
+#ifdef HAVE_FTRUNCATE
+ /* The most compatible way to create a sparse file is to start with no length. */
+ if (sparse_files > 0 && whole_file && fd >= 0 && do_ftruncate(fd, 0) == 0)
+ preallocated_len = 0;
+ else
+#endif
+ preallocated_len = size_r;
+ } else
+ preallocated_len = 0;
+
+ 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 (DEBUG_GTE(DELTASUM, 2)) {
+ rprintf(FINFO, "recv mapped %s of size %s\n",
+ fname_r, big_num(size_r));
+ }
+ } else
+ mapbuf = NULL;
+
+ sum_init(xfer_sum_nni, checksum_seed);
+
+ if (append_mode > 0) {
+ OFF_T j;
+ sum.flength = (OFF_T)sum.count * sum.blength;
+ if (sum.remainder)
+ sum.flength -= sum.blength - sum.remainder;
+ if (append_mode == 2 && mapbuf) {
+ for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
+ if (INFO_GTE(PROGRESS, 1))
+ show_progress(offset, total_size);
+ sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
+ CHUNK_SIZE);
+ offset = j;
+ }
+ if (offset < sum.flength) {
+ int32 len = (int32)(sum.flength - offset);
+ 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 %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 (INFO_GTE(PROGRESS, 1))
+ show_progress(offset, total_size);
+
+ if (allowed_lull)
+ maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
+
+ if (i > 0) {
+ if (DEBUG_GTE(DELTASUM, 3)) {
+ rprintf(FINFO,"data recv %d at %s\n",
+ i, big_num(offset));
+ }
+
+ stats.literal_data += i;
+ cleanup_got_literal = 1;
+
+ sum_update(data, i);
+
+ if (fd != -1 && write_file(fd, 0, offset, data, i) != i)
+ goto report_write_error;
+ offset += i;
+ continue;
+ }
+
+ i = -(i+1);
+ offset2 = i * (OFF_T)sum.blength;
+ len = sum.blength;
+ if (i == (int)sum.count-1 && sum.remainder != 0)
+ len = sum.remainder;
+
+ stats.matched_data += len;
+
+ if (DEBUG_GTE(DELTASUM, 3)) {
+ rprintf(FINFO,
+ "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)" : "");
+ }
+
+ if (mapbuf) {
+ map = map_ptr(mapbuf,offset2,len);
+
+ see_token(map, len);
+ sum_update(map, len);
+ }
+
+ if (updating_basis_or_equiv) {
+ if (offset == offset2 && fd != -1) {
+ if (skip_matched(fd, offset, map, len) < 0)
+ goto report_write_error;
+ offset += len;
+ continue;
+ }
+ }
+ if (fd != -1 && map && write_file(fd, 0, offset, map, len) != (int)len)
+ goto report_write_error;
+ offset += len;
+ }
+
+ if (fd != -1 && offset > 0) {
+ if (sparse_files > 0) {
+ if (sparse_end(fd, offset) != 0)
+ goto report_write_error;
+ } else if (flush_write_file(fd) < 0) {
+ report_write_error:
+ rsyserr(FERROR_XFER, errno, "write failed on %s", full_fname(fname));
+ exit_cleanup(RERR_FILEIO);
+ }
+ }
+
+#ifdef HAVE_FTRUNCATE
+ /* 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_sizing || preallocated_len > offset) && fd != -1 && !IS_DEVICE(file->mode)) {
+ if (do_ftruncate(fd, offset) < 0)
+ rsyserr(FERROR_XFER, errno, "ftruncate failed on %s", full_fname(fname));
+ }
+#endif
+
+ if (INFO_GTE(PROGRESS, 1))
+ end_progress(total_size);
+
+ sum_end(file_sum1);
+
+ if (do_fsync && fd != -1 && fsync(fd) != 0) {
+ rsyserr(FERROR, errno, "fsync failed on %s", full_fname(fname));
+ exit_cleanup(RERR_FILEIO);
+ }
+
+ if (mapbuf)
+ unmap_file(mapbuf);
+
+ read_buf(f_in, sender_file_sum, xfer_sum_len);
+ if (DEBUG_GTE(DELTASUM, 2))
+ rprintf(FINFO,"got file_sum\n");
+ if (fd != -1 && memcmp(file_sum1, sender_file_sum, xfer_sum_len) != 0)
+ return 0;
+ return 1;
+}
+
+
+static void discard_receive_data(int f_in, struct file_struct *file)
+{
+ receive_data(f_in, NULL, -1, 0, NULL, -1, file, 0);
+}
+
+static void handle_delayed_updates(char *local_name)
+{
+ char *fname, *partialptr;
+ int ndx;
+
+ for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
+ 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, False))
+ continue;
+ if (DEBUG_GTE(RECV, 1)) {
+ rprintf(FINFO, "renaming %s to %s\n",
+ partialptr, fname);
+ }
+ /* We don't use robust_rename() here because the
+ * partial-dir must be on the same drive. */
+ if (do_rename(partialptr, fname) < 0) {
+ rsyserr(FERROR_XFER, errno,
+ "rename failed for %s (from %s)",
+ full_fname(fname), partialptr);
+ } else {
+ if (remove_source_files || (preserve_hard_links && F_IS_HLINKED(file)))
+ send_msg_success(fname, ndx);
+ handle_partial_dir(partialptr, PDIR_DELETE);
+ }
+ }
+ }
+}
+
+static void no_batched_update(int ndx, BOOL is_redo)
+{
+ struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
+ struct file_struct *file = flist->files[ndx - flist->ndx_start];
+
+ rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
+ is_redo ? " resend of" : "", f_name(file, NULL));
+
+ if (inc_recurse && !dry_run)
+ send_msg_int(MSG_NO_SEND, ndx);
+}
+
+static int we_want_redo(int desired_ndx)
+{
+ static int redo_ndx = -1;
+
+ while (redo_ndx < desired_ndx) {
+ if (redo_ndx >= 0)
+ no_batched_update(redo_ndx, True);
+ if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
+ return 0;
+ }
+
+ if (redo_ndx == desired_ndx) {
+ redo_ndx = -1;
+ return 1;
+ }
+
+ 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, fnametmpbuf[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, one_inplace;
+
+ 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);
+
+ if (whole_file < 0)
+ whole_file = 0;
+
+ progress_init();
+
+ 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 && cur_flist) {
+ set_current_file_index(NULL, 0);
+ if (INFO_GTE(PROGRESS, 2))
+ 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);
+
+ if (daemon_filter_list.head && (*fname != '.' || fname[1] != '\0')) {
+ int filt_flags = S_ISDIR(file->mode) ? NAME_IS_DIR : NAME_IS_FILE;
+ if (check_filter(&daemon_filter_list, FLOG, fname, filt_flags) < 0) {
+ rprintf(FERROR, "ERROR: rejecting file transfer request for daemon excluded file: %s\n",
+ fname);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ }
+
+#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)
+ set_current_file_index(file, ndx);
+ stats.xferred_files++;
+ stats.total_transferred_size += F_LENGTH(file);
+
+ cleanup_got_literal = 0;
+
+ 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, file);
+ file->flags |= FLAG_FILE_SENT;
+ continue;
+ }
+ }
+
+ remember_initial_stats();
+
+ if (!do_xfers) { /* log the transfer */
+ log_item(FCLIENT, file, iflags, NULL);
+ if (read_batch)
+ discard_receive_data(f_in, file);
+ continue;
+ }
+ if (write_batch < 0) {
+ log_item(FCLIENT, file, iflags, NULL);
+ if (!am_server)
+ discard_receive_data(f_in, file);
+ if (inc_recurse)
+ send_msg_success(fname, 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, fnamecmp, 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;
+ fnamecmp_type = 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;
+ fnamecmp_type = FNAMECMP_BASIS_DIR_LOW;
+ fd1 = do_open(fnamecmp, O_RDONLY, 0);
+ }
+ }
+
+ one_inplace = inplace_partial && fnamecmp_type == FNAMECMP_PARTIAL_DIR;
+ updating_basis_or_equiv = one_inplace
+ || (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, 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, file);
+ close(fd1);
+ if (inc_recurse)
+ send_msg_int(MSG_NO_SEND, ndx);
+ continue;
+ }
+
+ if (write_devices && IS_DEVICE(st.st_mode)) {
+ if (fd1 != -1 && st.st_size == 0)
+ st.st_size = get_device_size(fd1, fname);
+ /* Mark the file entry as a device so that we don't try to truncate it later on. */
+ file->mode = S_IFBLK | (file->mode & ACCESSPERMS);
+ } else 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 || one_inplace) {
+ fnametmp = one_inplace ? partialptr : fname;
+ fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
+#ifdef linux
+ if (fd2 == -1 && errno == EACCES) {
+ /* Maybe the error was due to protected_regular setting? */
+ fd2 = do_open(fname, O_WRONLY, 0600);
+ }
+#endif
+ if (fd2 == -1) {
+ rsyserr(FERROR_XFER, errno, "open %s failed",
+ full_fname(fnametmp));
+ } else if (updating_basis_or_equiv)
+ cleanup_set(NULL, NULL, file, fd1, fd2);
+ } else {
+ fnametmp = fnametmpbuf;
+ fd2 = open_tmpfile(fnametmp, fname, file);
+ if (fd2 != -1)
+ cleanup_set(fnametmp, partialptr, file, fd1, fd2);
+ }
+
+ if (fd2 == -1) {
+ discard_receive_data(f_in, 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, file, inplace || one_inplace);
+
+ log_item(log_code, file, iflags, NULL);
+ if (want_progress_now)
+ instant_progress(fname);
+
+ 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) {
+ if (!one_inplace)
+ do_unlink(partialptr);
+ handle_partial_dir(partialptr, PDIR_DELETE);
+ }
+ } else if (keep_partial && partialptr && (!one_inplace || delay_updates)) {
+ 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 if (!one_inplace)
+ 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_success(fname, ndx);
+ break;
+ case 0: {
+ enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
+ if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1) || stdout_format_has_i) {
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-17 04:31:50 +0000