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 remove_source_files;
extern int append_mode;
extern int sparse_files;
+extern int preallocate_files;
extern int keep_partial;
extern int checksum_len;
extern int checksum_seed;
extern int inplace;
+extern int allowed_lull;
extern int delay_updates;
extern mode_t orig_umask;
extern struct stats stats;
extern char *basis_dir[MAX_BASIS_DIRS+1];
extern char sender_file_sum[MAX_DIGEST_LEN];
extern struct file_list *cur_flist, *first_flist, *dir_flist;
-extern struct filter_list_struct daemon_filter_list;
+extern filter_rule_list daemon_filter_list;
static struct bitbag *delayed_bits = NULL;
static int phase = 0, redoing = 0;
/* We're either updating the basis file or an identical copy: */
static int updating_basis_or_equiv;
-/*
- * get_tmpname() - create a tmp filename for a given filename
+#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!
+ * 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). Take care to not exceed
- * either the MAXPATHLEN or NAME_MAX, esp. the last, as
- * the basename basically becomes 8 chars longer. In that
- * case, the original name is shortened sufficiently to
- * make it all fit.
+ * 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.
*
- * Of course, there's no real reason for the tmp name to
- * look like the original, except to satisfy us humans.
- * As long as it's unique, rsync will work.
- */
-
-int get_tmpname(char *fnametmp, const char *fname)
+ * 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, added, length = 0;
+ int maxname, length = 0;
const char *f;
+ char *suf;
if (tmpdir) {
/* Note: this can't overflow, so the return value is safe */
}
} else
f = fname;
+ 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'.
- * (Note that NAME_MAX get -8 for the leading '.' above.) */
- maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
+ * NAME_MAX needs an extra -1 for the name's leading dot. */
+ maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
+ NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
- if (maxname < 1) {
+ if (maxname < 0) {
rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
fnametmp[0] = '\0';
return 0;
}
- added = strlcpy(fnametmp + length, f, maxname);
- if (added >= maxname)
- added = maxname - 1;
- memcpy(fnametmp + length + added, ".XXXXXX", 8);
+ 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;
}
int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
{
int fd;
+ mode_t added_perms;
- if (!get_tmpname(fnametmp, fname))
+ 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 & INITACCESSPERMS);
+ 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
- && create_directory_path(fnametmp) == 0) {
+ && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
/* Get back to name with XXXXXX in it. */
- get_tmpname(fnametmp, fname);
- fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
+ get_tmpname(fnametmp, fname, False);
+ fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
}
#endif
char *data;
int32 i;
char *map = NULL;
+#ifdef SUPPORT_PREALLOCATION
+#ifdef PREALLOCATE_NEEDS_TRUNCATE
+ OFF_T preallocated_len = 0;
+#endif
+
+ if (preallocate_files && fd != -1 && total_size > 0) {
+ /* Try to preallocate enough space for file's eventual length. Can
+ * reduce fragmentation on filesystems like ext4, xfs, and NTFS. */
+ if (do_fallocate(fd, 0, total_size) == 0) {
+#ifdef PREALLOCATE_NEEDS_TRUNCATE
+ preallocated_len = total_size;
+#endif
+ } else
+ rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname));
+ }
+#endif
read_sum_head(f_in, &sum);
sum.flength = (OFF_T)sum.count * sum.blength;
if (sum.remainder)
sum.flength -= sum.blength - sum.remainder;
- if (append_mode == 2) {
+ if (append_mode == 2 && mapbuf) {
for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
if (INFO_GTE(PROGRESS, 1))
show_progress(offset, total_size);
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",
if (DEBUG_GTE(DELTASUM, 3)) {
rprintf(FINFO,
- "chunk[%d] of size %ld at %s offset=%s\n",
- i, (long)len, big_num(offset2), big_num(offset));
+ "chunk[%d] of size %ld at %s offset=%s%s\n",
+ i, (long)len, big_num(offset2), big_num(offset),
+ updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
}
if (mapbuf) {
goto report_write_error;
#ifdef HAVE_FTRUNCATE
- if (inplace && fd != -1
- && ftruncate(fd, offset) < 0) {
+ /* inplace: New data could be shorter than old data.
+ * preallocate_files: total_size could have been an overestimate.
+ * Cut off any extra preallocated zeros from dest file. */
+ if ((inplace
+#ifdef PREALLOCATE_NEEDS_TRUNCATE
+ || preallocated_len > offset
+#endif
+ ) && fd != -1 && do_ftruncate(fd, offset) < 0) {
rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
full_fname(fname));
}
if (INFO_GTE(PROGRESS, 1))
end_progress(total_size);
- if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
+ if (fd != -1 && offset > 0 && sparse_end(fd, offset) != 0) {
report_write_error:
rsyserr(FERROR_XFER, errno, "write failed on %s",
full_fname(fname));
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;
* main routine for receiver process.
*
* Receiver process runs on the same host as the generator process. */
-int recv_files(int f_in, char *local_name)
+int recv_files(int f_in, int f_out, char *local_name)
{
int fd1,fd2;
STRUCT_STAT st;
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;
cleanup_disable();
/* This call also sets cur_flist. */
- ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
+ ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type,
xname, &xlen);
if (ndx == NDX_DONE) {
if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
rprintf(FINFO, "recv_files phase=%d\n", phase);
if (phase == 2 && delay_updates)
handle_delayed_updates(local_name);
- send_msg(MSG_DONE, "", 0, 0);
+ write_int(f_out, NDX_DONE);
continue;
}
rprintf(FINFO, "recv_files(%s)\n", fname);
#ifdef SUPPORT_XATTRS
- if (iflags & ITEM_REPORT_XATTR && !dry_run)
+ if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
+ && (protocol_version < 31 || !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 && !dry_run)
+ 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) {
}
}
+ if (!log_before_transfer)
+ remember_initial_stats();
+
if (!do_xfers) { /* log the transfer */
- log_item(FCLIENT, file, &stats, iflags, NULL);
+ log_item(FCLIENT, file, iflags, NULL);
if (read_batch)
discard_receive_data(f_in, F_LENGTH(file));
continue;
}
if (write_batch < 0) {
- log_item(FCLIENT, file, &stats, iflags, NULL);
+ log_item(FCLIENT, file, iflags, NULL);
if (!am_server)
discard_receive_data(f_in, F_LENGTH(file));
continue;
fnamecmp = fname;
}
- initial_stats = stats;
-
/* open the file */
fd1 = do_open(fnamecmp, O_RDONLY, 0);
/* log the transfer */
if (log_before_transfer)
- log_item(FCLIENT, file, &initial_stats, iflags, NULL);
+ log_item(FCLIENT, file, iflags, NULL);
else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
rprintf(FINFO, "%s\n", fname);
recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
fname, fd2, F_LENGTH(file));
- log_item(log_code, file, &initial_stats, iflags, NULL);
+ log_item(log_code, file, iflags, NULL);
if (fd1 != -1)
close(fd1);
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff