/**
* 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 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;
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;
int dflt_perms = (ACCESSPERMS & ~orig_umask);
#if 0 /* was SUPPORT_ACLS */
const char *parent_dirname = "";
#endif
int ndx, recv_ok;
if (verbose > 2)
rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
if (delay_updates)
delayed_bits = bitbag_create(cur_flist->used + 1);
while (1) {
struct sum_struct sum;
int numMatchTokens = -1, nextToken = 0;
char *nextData = NULL;
static char file_sum[MAX_DIGEST_LEN];
cleanup_disable();
/* This call also sets cur_flist. */
ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
xname, &xlen);
if (ndx == NDX_DONE) {
if (inc_recurse && first_flist) {
if (read_batch)
gen_wants_ndx(first_flist->used + first_flist->ndx_start);
flist_free(first_flist);
if (first_flist)
continue;
} else if (read_batch && first_flist)
gen_wants_ndx(first_flist->used);
if (++phase > max_phase)
break;
if (verbose > 2)
rprintf(FINFO, "recv_files phase=%d\n", phase);
if (phase == 2 && delay_updates)
handle_delayed_updates(local_name);
send_msg(MSG_DONE, "", 0, 0);
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 (verbose > 2)
rprintf(FINFO, "recv_files(%s)\n", fname);
#ifdef SUPPORT_XATTRS
if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers)
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
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 (!am_server && do_progress)
set_current_file_index(file, ndx);
stats.num_transferred_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);
}
read_sum_head(f_in, &sum);
if (read_batch) {
int wanted = redoing
? we_want_redo(ndx)
: gen_wants_ndx(ndx);
if (!wanted) {
rprintf(FINFO,
"(Skipping batched update for%s \"%s\")\n",
redoing ? " resend of" : "",
fname);
discard_receive_data(f_in, F_LENGTH(file),
&sum, numMatchTokens, nextToken, nextData, file_sum);
file->flags |= FLAG_FILE_SENT;
continue;
}
}
if (!do_xfers) { /* log the transfer */
log_item(FCLIENT, file, &stats, iflags, NULL);
if (read_batch)
discard_receive_data(f_in, F_LENGTH(file),
&sum, numMatchTokens, nextToken, nextData, file_sum);
continue;
}
if (write_batch < 0) {
log_item(FCLIENT, file, &stats, iflags, NULL);
if (!am_server)
discard_receive_data(f_in, F_LENGTH(file),
&sum, numMatchTokens, nextToken, nextData, file_sum);
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, MAXPATHLEN,
file->dirname, xname);
fnamecmp = fnamecmpbuf;
} else
fnamecmp = xname;
break;
default:
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);
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;
}
initial_stats = stats;
/*
* Opening/reading/writing files in BackupPC is quite expensive, given the
* compression. Before we open the file and call mkstemp, we peek ahead at
* the delta tokens to see if the file is unchanged. If so, we skip the file
* open, mkstemp and writing. The file is unchanged if the tokens
* are sequential matching block numbers, which are encoded as
* negative integers (ie: -1, -2, -3...), with no literal data
* tokens (which have positive numbers).
*
* If the file has changed, at some point a matching block token
* will be out of order, or we will encounter a literal data token.
* At that point, we stop reading ahead and proceed as normal.
* We pass the number of matching block tokens, and the first
* unexpected token, to receive_data(), so it can process all
* the tokens back (basically playing them back).
*
* Of course, this only applies if the file exists already,
* and protocol_version 30 is required since older protocols
* use MD4 for the full-file digest, not MD5.
*
* First we need to read the sum struct, then start reading the
* tokens.
*/
recv_ok = 0;
if ( protocol_version >= 30 ) {
numMatchTokens = 0;
while ( (nextToken = recv_token(f_in, &nextData)) != 0 ) {
if ( nextToken != -numMatchTokens - 1 ) break;
numMatchTokens++;
}
if ( nextToken == 0 ) {
OFF_T flength = (OFF_T)numMatchTokens * sum.blength;
if ( sum.remainder && numMatchTokens > 0 )
flength -= sum.blength - sum.remainder;
/*
* Likely exact match - read the final file digest and make
* sure the digest and file size match the existing file.
* If so, this call creates the temporary file so the
* attributes can be checked/set, and then renamed as
* before.
*/
read_buf(f_in, file_sum, MD5_DIGEST_LEN);
if ( !bpc_sysCall_checkFileMatch(fnamecmp, fnametmp, file, file_sum, flength) ) {
recv_ok = 1;
if ( log_before_transfer ) {
iflags &= ~ITEM_REPORT_CHANGE;
log_item(FCLIENT, file, &initial_stats, iflags, NULL);
}
}
}
}
if ( !recv_ok ) {
/*
* proceed as normal, remembering to replay the tokens we read ahead above:
* first, numMatchTokens: -1, -2, ..., -numMatchTokens,
* then (nextToken,nextData). After that we go back to reading the
* remaining tokens from f_in.
*/
/* open the file */
fd1 = do_open(fnamecmp, O_RDONLY, 0);
if ( fd1 < 0 && protocol_version >= 30 && always_checksum ) {
/*
* For protocol_version >= 30 and if always_checksum is set, we can use the
* MD5 whole-file digest to check for a potential match via the pool.
* Use that as the basis if the file is there. The generator does
* the same in recv_generator().
*/
if ( S_ISREG(file->mode) && !bpc_sysCall_poolFileCheck(fnamecmp, 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),
&sum, numMatchTokens, nextToken, nextData, file_sum);
bpc_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),
&sum, numMatchTokens, nextToken, nextData, file_sum);
bpc_close(fd1);
if (inc_recurse)
send_msg_int(MSG_NO_SEND, ndx);
continue;
}
if (fd1 != -1 && !S_ISREG(st.st_mode)) {
bpc_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;
#if 0 /* was 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 {
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),
&sum, numMatchTokens, nextToken, nextData, file_sum);
if (fd1 != -1)
bpc_close(fd1);
if (inc_recurse)
send_msg_int(MSG_NO_SEND, ndx);
continue;
}
/* log the transfer */
if (log_before_transfer)
log_item(FCLIENT, file, &initial_stats, iflags, NULL);
else if (!am_server && verbose && do_progress)
rprintf(FINFO, "%s\n", fname);
/* recv file data */
recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
fname, fd2, F_LENGTH(file),
&sum, numMatchTokens, nextToken, nextData, file_sum);
if (fd1 != -1)
bpc_close(fd1);
if (bpc_close(fd2) < 0) {
rsyserr(FERROR, errno, "close failed on %s",
full_fname(fnametmp));
exit_cleanup(RERR_FILEIO);
}
}
log_item(log_code, file, &initial_stats, iflags, NULL);
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 || verbose) {
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;
bpc_sysCall_printfileStatus(fname, "retry");
} else if (inc_recurse)
send_msg_int(MSG_NO_SEND, ndx);
bpc_sysCall_printfileStatus(fname, "fail");
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 (verbose > 2)
rprintf(FINFO,"recv_files finished\n");
return 0;
}
/**
* 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 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;
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;
int dflt_perms = (ACCESSPERMS & ~orig_umask);
#ifdef SUPPORT_ACLS
const char *parent_dirname = "";
#endif
int ndx, recv_ok;
if (verbose > 2)
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, &iflags, &fnamecmp_type,
xname, &xlen);
if (ndx == NDX_DONE) {
if (inc_recurse && first_flist) {
if (read_batch)
gen_wants_ndx(first_flist->used + first_flist->ndx_start);
flist_free(first_flist);
if (first_flist)
continue;
} else if (read_batch && first_flist)
gen_wants_ndx(first_flist->used);
if (++phase > max_phase)
break;
if (verbose > 2)
rprintf(FINFO, "recv_files phase=%d\n", phase);
if (phase == 2 && delay_updates)
handle_delayed_updates(local_name);
send_msg(MSG_DONE, "", 0, 0);
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 (verbose > 2)
rprintf(FINFO, "recv_files(%s)\n", fname);
#ifdef SUPPORT_XATTRS
if (iflags & ITEM_REPORT_XATTR && !dry_run)
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 && !dry_run)
set_file_attrs(fname, file, NULL, fname, 0);
#endif
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 (!am_server && do_progress)
set_current_file_index(file, ndx);
stats.num_transferred_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 (!do_xfers) { /* log the transfer */
log_item(FCLIENT, file, &stats, 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);
if (!am_server)
discard_receive_data(f_in, F_LENGTH(file));
continue;
}
if (read_batch) {
if (!(redoing ? we_want_redo(ndx) : gen_wants_ndx(ndx))) {
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;
}
}
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, MAXPATHLEN,
file->dirname, xname);
fnamecmp = fnamecmpbuf;
} else
fnamecmp = xname;
break;
default:
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);
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;
}
initial_stats = stats;
/* 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 {
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, &initial_stats, iflags, NULL);
else if (!am_server && verbose && do_progress)
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);
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 || verbose) {
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 (verbose > 2)
rprintf(FINFO,"recv_files finished\n");
return 0;
}
/****************************************************************************
Create a directory given an absolute path, perms based upon another directory
path
****************************************************************************/
int make_bak_dir(const char *fullpath)
{
char fbuf[MAXPATHLEN], *rel, *end, *p;
struct file_struct *file;
int len = backup_dir_len;
stat_x sx;
while (*fullpath == '.' && fullpath[1] == '/') {
fullpath += 2;
len -= 2;
}
if (strlcpy(fbuf, fullpath, sizeof fbuf) >= sizeof fbuf)
return -1;
rel = fbuf + len;
end = p = rel + strlen(rel);
/* Try to find an existing dir, starting from the deepest dir. */
while (1) {
if (--p == fbuf)
return -1;
if (*p == '/') {
*p = '\0';
if (mkdir_defmode(fbuf) == 0)
break;
if (errno != ENOENT) {
rsyserr(FERROR, errno,
"make_bak_dir mkdir %s failed",
full_fname(fbuf));
return -1;
}
}
}
/* Make all the dirs that we didn't find on the way here. */
while (1) {
if (p >= rel) {
/* Try to transfer the directory settings of the
* actual dir that the files are coming from. */
if (x_stat(rel, &sx.st, NULL) < 0) {
rsyserr(FERROR, errno,
"make_bak_dir stat %s failed",
full_fname(rel));
} else {
#ifdef SUPPORT_ACLS
sx.acc_acl = sx.def_acl = NULL;
#endif
#ifdef SUPPORT_XATTRS
sx.xattr = NULL;
#endif
if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS)))
continue;
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
get_acl(rel, &sx);
cache_tmp_acl(file, &sx);
free_acl(&sx);
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
get_xattr(rel, &sx);
cache_tmp_xattr(file, &sx);
free_xattr(&sx);
}
#endif
set_file_attrs(fbuf, file, NULL, NULL, 0);
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
}
}
*p = '/';
p += strlen(p);
if (p == end)
break;
if (mkdir_defmode(fbuf) < 0) {
rsyserr(FERROR, errno, "make_bak_dir mkdir %s failed",
full_fname(fbuf));
return -1;
}
}
return 0;
}
/* If we have a --backup-dir, then we get here from make_backup().
* We will move the file to be deleted into a parallel directory tree. */
static int keep_backup(const char *fname)
{
stat_x sx;
struct file_struct *file;
char *buf;
int save_preserve_xattrs = preserve_xattrs;
int kept = 0;
int ret_code;
/* return if no file to keep */
if (x_lstat(fname, &sx.st, NULL) < 0)
return 1;
#ifdef SUPPORT_ACLS
sx.acc_acl = sx.def_acl = NULL;
#endif
#ifdef SUPPORT_XATTRS
sx.xattr = NULL;
#endif
if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
return 1; /* the file could have disappeared */
if (!(buf = get_backup_name(fname))) {
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
return 0;
}
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
get_acl(fname, &sx);
cache_tmp_acl(file, &sx);
free_acl(&sx);
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
get_xattr(fname, &sx);
cache_tmp_xattr(file, &sx);
free_xattr(&sx);
}
#endif
/* Check to see if this is a device file, or link */
if ((am_root && preserve_devices && IS_DEVICE(file->mode))
|| (preserve_specials && IS_SPECIAL(file->mode))) {
int save_errno;
do_unlink(buf);
if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0) {
save_errno = errno ? errno : EINVAL; /* 0 paranoia */
if (errno == ENOENT && make_bak_dir(buf) == 0) {
if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0)
save_errno = errno ? errno : save_errno;
else
save_errno = 0;
}
if (save_errno) {
rsyserr(FERROR, save_errno, "mknod %s failed",
full_fname(buf));
}
} else
save_errno = 0;
if (verbose > 2 && save_errno == 0) {
rprintf(FINFO, "make_backup: DEVICE %s successful.\n",
fname);
}
kept = 1;
do_unlink(fname);
}
if (!kept && S_ISDIR(file->mode)) {
/* make an empty directory */
if (do_mkdir(buf, file->mode) < 0) {
int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
if (errno == ENOENT && make_bak_dir(buf) == 0) {
if (do_mkdir(buf, file->mode) < 0)
save_errno = errno ? errno : save_errno;
else
save_errno = 0;
}
if (save_errno) {
rsyserr(FINFO, save_errno, "mkdir %s failed",
full_fname(buf));
}
}
ret_code = do_rmdir(fname);
if (verbose > 2) {
rprintf(FINFO, "make_backup: RMDIR %s returns %i\n",
full_fname(fname), ret_code);
}
kept = 1;
}
#ifdef SUPPORT_LINKS
if (!kept && preserve_links && S_ISLNK(file->mode)) {
const char *sl = F_SYMLINK(file);
if (safe_symlinks && unsafe_symlink(sl, fname)) {
if (verbose) {
rprintf(FINFO, "ignoring unsafe symlink %s -> %s\n",
full_fname(buf), sl);
}
kept = 1;
} else {
do_unlink(buf);
if (do_symlink(sl, buf) < 0) {
int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
if (errno == ENOENT && make_bak_dir(buf) == 0) {
if (do_symlink(sl, buf) < 0)
save_errno = errno ? errno : save_errno;
else
save_errno = 0;
}
if (save_errno) {
rsyserr(FERROR, save_errno, "link %s -> \"%s\"",
full_fname(buf), sl);
}
}
do_unlink(fname);
kept = 1;
}
}
#endif
if (!kept && !S_ISREG(file->mode)) {
rprintf(FINFO, "make_bak: skipping non-regular file %s\n",
fname);
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
return 1;
}
/* move to keep tree if a file */
if (!kept) {
if (robust_move(fname, buf) != 0) {
rsyserr(FERROR, errno, "keep_backup failed: %s -> \"%s\"",
full_fname(fname), buf);
} else if (sx.st.st_nlink > 1) {
/* If someone has hard-linked the file into the backup
* dir, rename() might return success but do nothing! */
robust_unlink(fname); /* Just in case... */
}
}
preserve_xattrs = 0;
set_file_attrs(buf, file, NULL, fname, 0);
preserve_xattrs = save_preserve_xattrs;
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
if (verbose > 1) {
rprintf(FINFO, "backed up %s to %s\n",
fname, buf);
}
return 1;
}
/* Create a backup path from the given fname, putting the result into
* backup_dir_buf. Any new directories (compared to the prior backup
* path) are ensured to exist as directories, replacing anything else
* that may be in the way (e.g. a symlink). */
static BOOL copy_valid_path(const char *fname)
{
const char *f;
int val;
BOOL ret = True;
stat_x sx;
char *b, *rel = backup_dir_buf + backup_dir_len, *name = rel;
for (f = fname, b = rel; *f && *f == *b; f++, b++) {
if (*b == '/')
name = b + 1;
}
if (stringjoin(rel, backup_dir_remainder, fname, backup_suffix, NULL) >= backup_dir_remainder) {
rprintf(FERROR, "backup filename too long\n");
*name = '\0';
return False;
}
for ( ; ; name = b + 1) {
if ((b = strchr(name, '/')) == NULL)
return True;
*b = '\0';
val = validate_backup_dir();
if (val == 0)
break;
if (val < 0) {
*name = '\0';
return False;
}
*b = '/';
}
init_stat_x(&sx);
for ( ; b; name = b + 1, b = strchr(name, '/')) {
*b = '\0';
while (do_mkdir(backup_dir_buf, ACCESSPERMS) < 0) {
if (errno == EEXIST) {
val = validate_backup_dir();
if (val > 0)
break;
if (val == 0)
continue;
} else
rsyserr(FERROR, errno, "backup mkdir %s failed", backup_dir_buf);
*name = '\0';
ret = False;
goto cleanup;
}
/* Try to transfer the directory settings of the actual dir
* that the files are coming from. */
if (x_stat(rel, &sx.st, NULL) < 0)
rsyserr(FERROR, errno, "backup stat %s failed", full_fname(rel));
else {
struct file_struct *file;
if (!(file = make_file(rel, NULL, NULL, 0, NO_FILTERS)))
continue;
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
get_acl(rel, &sx);
cache_tmp_acl(file, &sx);
free_acl(&sx);
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
get_xattr(rel, &sx);
cache_tmp_xattr(file, &sx);
free_xattr(&sx);
}
#endif
set_file_attrs(backup_dir_buf, file, NULL, NULL, 0);
unmake_file(file);
}
*b = '/';
}
cleanup:
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
return ret;
}
/* Hard-link, rename, or copy an item to the backup name. Returns 0 for
* failure, 1 if item was moved, 2 if item was duplicated or hard linked
* into backup area, or 3 if item doesn't exist or isn't a regular file. */
int make_backup(const char *fname, BOOL prefer_rename)
{
stat_x sx;
struct file_struct *file;
int save_preserve_xattrs;
char *buf;
int ret = 0;
init_stat_x(&sx);
/* Return success if no file to keep. */
if (x_lstat(fname, &sx.st, NULL) < 0)
return 3;
if (!(buf = get_backup_name(fname)))
return 0;
/* Try a hard-link or a rename first. Using rename is not atomic, but
* is more efficient than forcing a copy for larger files when no hard-
* linking is possible. */
if ((ret = link_or_rename(fname, buf, prefer_rename, &sx.st)) != 0)
goto success;
if (errno == EEXIST || errno == EISDIR) {
STRUCT_STAT bakst;
if (do_lstat(buf, &bakst) == 0) {
int flags = get_del_for_flag(bakst.st_mode) | DEL_FOR_BACKUP | DEL_RECURSE;
if (delete_item(buf, bakst.st_mode, flags) != 0)
return 0;
}
if ((ret = link_or_rename(fname, buf, prefer_rename, &sx.st)) != 0)
goto success;
}
/* Fall back to making a copy. */
if (!(file = make_file(fname, NULL, &sx.st, 0, NO_FILTERS)))
return 3; /* the file could have disappeared */
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
get_acl(fname, &sx);
cache_tmp_acl(file, &sx);
free_acl(&sx);
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
get_xattr(fname, &sx);
cache_tmp_xattr(file, &sx);
free_xattr(&sx);
}
#endif
/* Check to see if this is a device file, or link */
if ((am_root && preserve_devices && IS_DEVICE(file->mode))
|| (preserve_specials && IS_SPECIAL(file->mode))) {
if (do_mknod(buf, file->mode, sx.st.st_rdev) < 0)
rsyserr(FERROR, errno, "mknod %s failed", full_fname(buf));
else if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: DEVICE %s successful.\n", fname);
ret = 2;
}
#ifdef SUPPORT_LINKS
if (!ret && preserve_links && S_ISLNK(file->mode)) {
const char *sl = F_SYMLINK(file);
if (safe_symlinks && unsafe_symlink(sl, fname)) {
if (INFO_GTE(SYMSAFE, 1)) {
rprintf(FINFO, "not backing up unsafe symlink \"%s\" -> \"%s\"\n",
fname, sl);
}
ret = 2;
} else {
if (do_symlink(sl, buf) < 0)
rsyserr(FERROR, errno, "link %s -> \"%s\"", full_fname(buf), sl);
else if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: SYMLINK %s successful.\n", fname);
ret = 2;
}
}
#endif
if (!ret && !S_ISREG(file->mode)) {
rprintf(FINFO, "make_bak: skipping non-regular file %s\n", fname);
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
return 3;
}
/* Copy to backup tree if a file. */
if (!ret) {
if (copy_file(fname, buf, -1, file->mode) < 0) {
rsyserr(FERROR, errno, "keep_backup failed: %s -> \"%s\"",
full_fname(fname), buf);
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
return 0;
}
if (DEBUG_GTE(BACKUP, 1))
rprintf(FINFO, "make_backup: COPY %s successful.\n", fname);
ret = 2;
}
save_preserve_xattrs = preserve_xattrs;
preserve_xattrs = 0;
set_file_attrs(buf, file, NULL, fname, ATTRS_SET_NANO);
preserve_xattrs = save_preserve_xattrs;
unmake_file(file);
#ifdef SUPPORT_ACLS
uncache_tmp_acls();
#endif
#ifdef SUPPORT_XATTRS
uncache_tmp_xattrs();
#endif
success:
if (INFO_GTE(BACKUP, 1))
rprintf(FINFO, "backed up %s to %s\n", fname, buf);
return ret;
}
/* If we have a --backup-dir, then we get here from make_backup().
* We will move the file to be deleted into a parallel directory tree. */
static int keep_backup(const char *fname)
{
STRUCT_STAT st;
struct file_struct *file;
char *buf;
int kept = 0;
int ret_code;
/* return if no file to keep */
if (do_lstat(fname, &st) < 0)
return 1;
if (!(file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
return 1; /* the file could have disappeared */
if (!(buf = get_backup_name(fname))) {
unmake_file(file);
return 0;
}
/* Check to see if this is a device file, or link */
if ((am_root && preserve_devices && IS_DEVICE(file->mode))
|| (preserve_specials && IS_SPECIAL(file->mode))) {
uint32 *devp = F_RDEV_P(file);
dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
do_unlink(buf);
if (do_mknod(buf, file->mode, rdev) < 0
&& (errno != ENOENT || make_bak_dir(buf) < 0
|| do_mknod(buf, file->mode, rdev) < 0)) {
rsyserr(FERROR, errno, "mknod %s failed",
full_fname(buf));
} else if (verbose > 2) {
rprintf(FINFO, "make_backup: DEVICE %s successful.\n",
fname);
}
kept = 1;
do_unlink(fname);
}
if (!kept && S_ISDIR(file->mode)) {
/* make an empty directory */
if (do_mkdir(buf, file->mode) < 0
&& (errno != ENOENT || make_bak_dir(buf) < 0
|| do_mkdir(buf, file->mode) < 0)) {
rsyserr(FINFO, errno, "mkdir %s failed",
full_fname(buf));
}
ret_code = do_rmdir(fname);
if (verbose > 2) {
rprintf(FINFO, "make_backup: RMDIR %s returns %i\n",
full_fname(fname), ret_code);
}
kept = 1;
}
#ifdef SUPPORT_LINKS
if (!kept && preserve_links && S_ISLNK(file->mode)) {
const char *sl = F_SYMLINK(file);
if (safe_symlinks && unsafe_symlink(sl, buf)) {
if (verbose) {
rprintf(FINFO, "ignoring unsafe symlink %s -> %s\n",
full_fname(buf), sl);
}
kept = 1;
} else {
do_unlink(buf);
if (do_symlink(sl, buf) < 0
&& (errno != ENOENT || make_bak_dir(buf) < 0
|| do_symlink(sl, buf) < 0)) {
rsyserr(FERROR, errno, "link %s -> \"%s\"",
full_fname(buf), sl);
}
do_unlink(fname);
kept = 1;
}
}
#endif
if (!kept && !S_ISREG(file->mode)) {
rprintf(FINFO, "make_bak: skipping non-regular file %s\n",
fname);
unmake_file(file);
return 1;
}
/* move to keep tree if a file */
if (!kept) {
if (robust_move(fname, buf) != 0) {
rsyserr(FERROR, errno, "keep_backup failed: %s -> \"%s\"",
full_fname(fname), buf);
} else if (st.st_nlink > 1) {
/* If someone has hard-linked the file into the backup
* dir, rename() might return success but do nothing! */
robust_unlink(fname); /* Just in case... */
}
}
set_file_attrs(buf, file, NULL, 0);
unmake_file(file);
if (verbose > 1) {
rprintf(FINFO, "backed up %s to %s\n",
fname, buf);
}
return 1;
}
