/*
* Routines that are exclusive to the generator process.
*
* Copyright (C) 1996-2000 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2002 Martin Pool <mbp@samba.org>
* Copyright (C) 2003-2020 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"
#include "ifuncs.h"
extern int dry_run;
extern int do_xfers;
extern int stdout_format_has_i;
extern int logfile_format_has_i;
extern int am_root;
extern int am_server;
extern int am_daemon;
extern int inc_recurse;
extern int relative_paths;
extern int implied_dirs;
extern int keep_dirlinks;
extern int preserve_acls;
extern int preserve_xattrs;
extern int preserve_hfs_compression;
extern int preserve_links;
extern int preserve_devices;
extern int copy_devices;
extern int write_devices;
extern int preserve_specials;
extern int preserve_hard_links;
extern int preserve_executability;
extern int preserve_fileflags;
extern int preserve_perms;
extern int preserve_times;
extern int force_change;
extern int delete_mode;
extern int delete_before;
extern int delete_during;
extern int delete_after;
extern int missing_args;
extern int msgdone_cnt;
extern int ignore_errors;
extern int checksum_files;
extern int remove_source_files;
extern int delay_updates;
extern int update_only;
extern int downdate_only;
extern int human_readable;
extern int ignore_existing;
extern int ignore_non_existing;
extern int want_xattr_optim;
extern int modify_window;
extern int inplace;
extern int use_db;
extern int append_mode;
extern int make_backups;
extern int csum_length;
extern int ignore_times;
extern int date_only;
extern int size_only;
extern OFF_T max_size;
extern OFF_T min_size;
extern int io_error;
extern int flist_eof;
extern int allowed_lull;
extern int sock_f_out;
extern int protocol_version;
extern int file_total;
extern int fuzzy_basis;
extern int always_checksum;
extern int flist_csum_len;
extern char *partial_dir;
extern int alt_dest_type;
extern int detect_renamed;
extern int whole_file;
extern int list_only;
extern int read_batch;
extern int write_batch;
extern int safe_symlinks;
extern int32 block_size;
extern int unsort_ndx;
extern int max_delete;
extern int force_delete;
extern int one_file_system;
extern int skipped_deletes;
extern dev_t filesystem_dev;
extern mode_t orig_umask;
extern uid_t our_uid;
extern char *tmpdir;
extern char *basis_dir[MAX_BASIS_DIRS+1];
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern filter_rule_list filter_list, daemon_filter_list;
extern struct file_list the_fattr_list;
int maybe_ATTRS_REPORT = 0;
int maybe_ATTRS_ACCURATE_TIME = 0;
static dev_t dev_zero;
static int unexplored_dirs = 1;
static int deldelay_size = 0, deldelay_cnt = 0;
static char *deldelay_buf = NULL;
static int deldelay_fd = -1;
static int loopchk_limit;
static int dir_tweaking;
static int symlink_timeset_failed_flags;
static int need_retouch_dir_times;
static int need_retouch_dir_perms;
static int started_whole_dir, upcoming_whole_dir;
static const char *solo_file = NULL;
enum nonregtype {
TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
};
/* Forward declarations. */
#ifdef SUPPORT_HARD_LINKS
static void handle_skipped_hlink(struct file_struct *file, int itemizing,
enum logcode code, int f_out);
#endif
#define EARLY_DELAY_DONE_MSG() (!delay_updates)
#define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
static int start_delete_delay_temp(void)
{
char fnametmp[MAXPATHLEN];
int save_dry_run = dry_run;
dry_run = 0;
if (!get_tmpname(fnametmp, "deldelay", False)
|| (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
inc_recurse ? "" : " -- switching to --delete-after");
delete_during = 0;
delete_after = !inc_recurse;
dry_run = save_dry_run;
return 0;
}
unlink(fnametmp);
dry_run = save_dry_run;
return 1;
}
static int flush_delete_delay(void)
{
if (deldelay_fd < 0 && !start_delete_delay_temp())
return 0;
if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
rsyserr(FERROR, errno, "flush of delete-delay buffer");
delete_during = 0;
delete_after = !inc_recurse;
close(deldelay_fd);
return 0;
}
deldelay_cnt = 0;
return 1;
}
static int remember_delete(struct file_struct *file, const char *fname, int flags)
{
int len;
if (deldelay_cnt == deldelay_size && !flush_delete_delay())
return 0;
if (flags & DEL_NO_UID_WRITE)
deldelay_buf[deldelay_cnt++] = '!';
while (1) {
len = snprintf(deldelay_buf + deldelay_cnt, deldelay_size - deldelay_cnt,
"%x %s%c", (int)file->mode, fname, '\0');
if ((deldelay_cnt += len) <= deldelay_size)
break;
deldelay_cnt -= len;
if (!flush_delete_delay())
return 0;
}
return 1;
}
static int read_delay_line(char *buf, int *flags_p)
{
static int read_pos = 0;
int j, len, mode;
char *bp, *past_space;
while (1) {
for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
if (j < deldelay_cnt)
break;
if (deldelay_fd < 0) {
if (j > read_pos)
goto invalid_data;
return -1;
}
deldelay_cnt -= read_pos;
if (deldelay_cnt == deldelay_size)
goto invalid_data;
if (deldelay_cnt && read_pos) {
memmove(deldelay_buf, deldelay_buf + read_pos,
deldelay_cnt);
}
len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
deldelay_size - deldelay_cnt);
if (len == 0) {
if (deldelay_cnt) {
rprintf(FERROR, "ERROR: unexpected EOF in delete-delay file.\n");
}
return -1;
}
if (len < 0) {
rsyserr(FERROR, errno,
"reading delete-delay file");
return -1;
}
deldelay_cnt += len;
read_pos = 0;
}
bp = deldelay_buf + read_pos;
if (*bp == '!') {
bp++;
*flags_p = DEL_NO_UID_WRITE;
} else
*flags_p = 0;
if (sscanf(bp, "%x ", &mode) != 1) {
invalid_data:
rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
return -1;
}
past_space = strchr(bp, ' ') + 1;
len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
read_pos = j + 1;
if (len > MAXPATHLEN) {
rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
return -1;
}
/* The caller needs the name in a MAXPATHLEN buffer, so we copy it
* instead of returning a pointer to our buffer. */
memcpy(buf, past_space, len);
return mode;
}
static void do_delayed_deletions(char *delbuf)
{
int mode, flags;
if (deldelay_fd >= 0) {
if (deldelay_cnt && !flush_delete_delay())
return;
lseek(deldelay_fd, 0, 0);
}
while ((mode = read_delay_line(delbuf, &flags)) >= 0)
delete_item(delbuf, mode, flags | DEL_RECURSE);
if (deldelay_fd >= 0)
close(deldelay_fd);
}
/* This function is used to implement per-directory deletion, and is used by
* all the --delete-WHEN options. Note that the fbuf pointer must point to a
* MAXPATHLEN buffer with the name of the directory in it (the functions we
* call will append names onto the end, but the old dir value will be restored
* on exit).
*
* Note: --detect-rename may use this routine with DEL_NO_DELETIONS set!
*/
static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev,
int del_flags)
{
static int already_warned = 0;
static struct hashtable *dev_tbl;
struct file_list *dirlist;
char *p, delbuf[MAXPATHLEN];
unsigned remainder;
int dlen, i, restore_dot = 0;
if (!fbuf) {
change_local_filter_dir(NULL, 0, 0);
return;
}
if (DEBUG_GTE(DEL, 2))
rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
if (allowed_lull)
maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
if (io_error & IOERR_GENERAL && !ignore_errors) {
if (!already_warned) {
rprintf(FINFO,
"IO error encountered -- skipping file deletion\n");
already_warned = 1;
}
if (!detect_renamed)
return;
del_flags |= DEL_NO_DELETIONS;
}
dlen = strlen(fbuf);
change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
if (detect_renamed)
unexplored_dirs--;
if (one_file_system) {
if (!dev_tbl)
dev_tbl = hashtable_create(16, HT_KEY64);
if (file->flags & FLAG_TOP_DIR) {
hashtable_find(dev_tbl, *fs_dev+1, "");
filesystem_dev = *fs_dev;
} else if (filesystem_dev != *fs_dev) {
if (!hashtable_find(dev_tbl, *fs_dev+1, NULL))
return;
filesystem_dev = *fs_dev; /* it's a prior top-dir dev */
}
}
dirlist = get_dirlist(fbuf, dlen, 0);
p = fbuf + dlen;
if (dlen == 1 && *fbuf == '.') {
restore_dot = 1;
p = fbuf;
} else if (dlen != 1 || *fbuf != '/')
*p++ = '/';
remainder = MAXPATHLEN - (p - fbuf);
/* If an item in dirlist is not found in flist, delete it
* from the filesystem. */
for (i = dirlist->used; i--; ) {
struct file_struct *fp = dirlist->files[i];
if (!F_IS_ACTIVE(fp))
continue;
if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
if (INFO_GTE(MOUNT, 1))
rprintf(FINFO, "cannot delete mount point: %s\n",
f_name(fp, NULL));
continue;
}
if (detect_renamed && S_ISREG(fp->mode)) {
strlcpy(p, fp->basename, remainder);
look_for_rename(fp, fbuf);
}
/* Here we want to match regardless of file type. Replacement
* of a file with one of another type is handled separately by
* a delete_item call with a DEL_MAKE_ROOM flag. */
if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
int flags = DEL_RECURSE;
if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
flags |= DEL_NO_UID_WRITE;
f_name(fp, delbuf);
if (delete_during == 2 && !(del_flags & DEL_NO_DELETIONS)) {
if (!remember_delete(fp, delbuf, del_flags | flags))
break;
} else
delete_item(delbuf, fp->mode, del_flags | flags);
} else if (detect_renamed && S_ISDIR(fp->mode))
unexplored_dirs++;
}
if (restore_dot)
fbuf[0] = '.';
fbuf[dlen] = '\0';
flist_free(dirlist);
}
/* This deletes any files on the receiving side that are not present on the
* sending side. This is used by --delete-before and --delete-after. */
static void do_delete_pass(void)
{
char fbuf[MAXPATHLEN];
STRUCT_STAT st;
int j;
/* dry_run is incremented when the destination doesn't exist yet. */
if (dry_run > 1 || list_only)
return;
for (j = 0; j < cur_flist->used; j++) {
struct file_struct *file = cur_flist->sorted[j];
if (!F_IS_ACTIVE(file))
continue;
f_name(file, fbuf);
if (!(file->flags & FLAG_CONTENT_DIR)) {
change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
continue;
}
if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
rprintf(FINFO, "deleting in %s\n", fbuf);
if (link_stat(fbuf, &st, keep_dirlinks) < 0
|| !S_ISDIR(st.st_mode))
continue;
delete_in_dir(fbuf, file, &st.st_dev, 0);
}
delete_in_dir(NULL, NULL, &dev_zero, 0);
if (INFO_GTE(FLIST, 2) && !am_server)
rprintf(FINFO, " \r");
}
/* Search for a regular file that matches either (1) the size & modified
* time (plus the basename, if possible) or (2) the size & checksum. If
* we find an exact match down to the dirname, return -1 because we found
* an up-to-date file in the transfer, not a renamed file. */
static int fattr_find(struct file_struct *f, char *fname)
{
int low = the_fattr_list.low, high = the_fattr_list.high;
int mid, ok_match = -1, good_match = -1;
struct file_struct *fmid;
int diff;
while (low <= high) {
mid = (low + high) / 2;
fmid = the_fattr_list.files[mid];
if (F_LENGTH(fmid) != F_LENGTH(f)) {
if (F_LENGTH(fmid) < F_LENGTH(f))
low = mid + 1;
else
high = mid - 1;
continue;
}
if (always_checksum) {
/* We use the FLAG_FILE_SENT flag to indicate when we
* have computed the checksum for an entry. */
if (!(f->flags & FLAG_FILE_SENT)) {
STRUCT_STAT st;
if (fmid->modtime == f->modtime
&& f_name_cmp(fmid, f) == 0)
return -1; /* assume we can't help */
st.st_size = F_LENGTH(f);
st.st_mtime = f->modtime;
file_checksum(fname, &st, F_SUM(f));
f->flags |= FLAG_FILE_SENT;
}
diff = u_memcmp(F_SUM(fmid), F_SUM(f), flist_csum_len);
if (diff) {
if (diff < 0)
low = mid + 1;
else
high = mid - 1;
continue;
}
} else {
if (fmid->modtime != f->modtime) {
if (fmid->modtime < f->modtime)
low = mid + 1;
else
high = mid - 1;
continue;
}
}
ok_match = mid;
diff = u_strcmp(fmid->basename, f->basename);
if (diff == 0) {
good_match = mid;
if (fmid->dirname == f->dirname)
return -1; /* file is up-to-date */
if (!fmid->dirname) {
low = mid + 1;
continue;
}
if (!f->dirname) {
high = mid - 1;
continue;
}
diff = u_strcmp(fmid->dirname, f->dirname);
if (diff == 0)
return -1; /* file is up-to-date */
}
if (diff < 0)
low = mid + 1;
else
high = mid - 1;
}
return good_match >= 0 ? good_match : ok_match;
}
void look_for_rename(struct file_struct *file, char *fname)
{
struct file_struct *fp;
char *partialptr, *fn;
STRUCT_STAT st;
int ndx;
if (!partial_dir || (ndx = fattr_find(file, fname)) < 0)
return;
fp = the_fattr_list.files[ndx];
fn = f_name(fp, NULL);
/* We don't provide an alternate-basis file if there is a basis file. */
if (link_stat(fn, &st, 0) == 0)
return;
if (!dry_run) {
if ((partialptr = partial_dir_fname(fn)) == NULL
|| !handle_partial_dir(partialptr, PDIR_CREATE))
return;
/* We only use the file if we can hard-link it into our tmp dir. */
if (link(fname, partialptr) != 0) {
if (errno != EEXIST)
handle_partial_dir(partialptr, PDIR_DELETE);
return;
}
}
/* I think this falls into the -vv category with "%s is uptodate", etc. */
if (INFO_GTE(MISC, 2))
rprintf(FINFO, "found renamed: %s => %s\n", fname, fn);
}
static inline int mtime_differs(STRUCT_STAT *stp, struct file_struct *file)
{
#ifdef ST_MTIME_NSEC
return !same_time(stp->st_mtime, stp->ST_MTIME_NSEC, file->modtime, F_MOD_NSEC_or_0(file));
#else
return !same_time(stp->st_mtime, 0, file->modtime, 0);
#endif
}
static inline int any_time_differs(stat_x *sxp, struct file_struct *file, UNUSED(const char *fname))
{
int differs = mtime_differs(&sxp->st, file);
#ifdef SUPPORT_CRTIMES
if (!differs && crtimes_ndx) {
if (sxp->crtime == 0)
sxp->crtime = get_create_time(fname);
differs = !same_time(sxp->crtime, 0, F_CRTIME(file), 0);
}
#endif
return differs;
}
static inline int perms_differ(struct file_struct *file, stat_x *sxp)
{
if (preserve_perms)
return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
if (preserve_executability)
return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
return 0;
}
static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
{
if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
return 1;
if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
return 1;
return 0;
}
#ifdef SUPPORT_ACLS
static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
{
if (preserve_acls) {
if (!ACL_READY(*sxp))
get_acl(fname, sxp);
if (set_acl(NULL, file, sxp, file->mode))
return 1;
}
return 0;
}
#endif
#ifdef SUPPORT_XATTRS
static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
{
if (preserve_xattrs) {
if (!XATTR_READY(*sxp))
get_xattr(fname, sxp);
if (xattr_diff(file, sxp, 0))
return 1;
}
return 0;
}
#endif
int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
{
if (S_ISLNK(file->mode)) {
#ifdef CAN_SET_SYMLINK_TIMES
if (preserve_times & PRESERVE_LINK_TIMES && any_time_differs(sxp, file, fname))
return 0;
#endif
#ifdef CAN_CHMOD_SYMLINK
if (perms_differ(file, sxp))
return 0;
#endif
#ifdef CAN_CHOWN_SYMLINK
if (ownership_differs(file, sxp))
return 0;
#endif
#if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
if (acls_differ(fname, file, sxp))
return 0;
#endif
#if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
if (xattrs_differ(fname, file, sxp))
return 0;
#endif
} else {
if (preserve_times && any_time_differs(sxp, file, fname))
return 0;
if (perms_differ(file, sxp))
return 0;
#ifdef SUPPORT_FILEFLAGS
if (preserve_fileflags && sxp->st.st_flags != F_FFLAGS(file))
return 0;
#endif
if (ownership_differs(file, sxp))
return 0;
#ifdef SUPPORT_ACLS
if (acls_differ(fname, file, sxp))
return 0;
#endif
#ifdef SUPPORT_XATTRS
if (xattrs_differ(fname, file, sxp))
return 0;
#endif
}
return 1;
}
void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
stat_x *sxp, int32 iflags, uchar fnamecmp_type,
const char *xname)
{
if (statret >= 0) { /* A from-dest-dir statret can == 1! */
int omit_changes = omit_dir_changes && S_ISDIR(sxp->st.st_mode);
int keep_time = !preserve_times ? 0
: S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
: S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
: 1;
if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
iflags |= ITEM_REPORT_SIZE;
if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
if (iflags & ITEM_LOCAL_CHANGE)
iflags |= symlink_timeset_failed_flags;
} else if (keep_time
? mtime_differs(&sxp->st, file)
: iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
&& (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
iflags |= ITEM_REPORT_TIME;
if (atimes_ndx && !S_ISDIR(file->mode) && !S_ISLNK(file->mode)
&& !same_time(F_ATIME(file), 0, sxp->st.st_atime, 0))
iflags |= ITEM_REPORT_ATIME;
#ifdef SUPPORT_CRTIMES
if (crtimes_ndx) {
if (sxp->crtime == 0)
sxp->crtime = get_create_time(fnamecmp);
if (!same_time(sxp->crtime, 0, F_CRTIME(file), 0))
iflags |= ITEM_REPORT_CRTIME;
}
#endif
#if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
if (S_ISLNK(file->mode)) {
;
} else
#endif
if (preserve_perms) {
if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
iflags |= ITEM_REPORT_PERMS;
} else if (preserve_executability
&& ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
iflags |= ITEM_REPORT_PERMS;
if (uid_ndx && am_root && !omit_changes && (uid_t)F_OWNER(file) != sxp->st.st_uid)
iflags |= ITEM_REPORT_OWNER;
if (gid_ndx && !omit_changes && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
iflags |= ITEM_REPORT_GROUP;
#ifdef SUPPORT_FILEFLAGS
if (preserve_fileflags && !S_ISLNK(file->mode)
&& sxp->st.st_flags != F_FFLAGS(file))
iflags |= ITEM_REPORT_FFLAGS;
#endif
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
if (!ACL_READY(*sxp))
get_acl(fnamecmp, sxp);
if (set_acl(NULL, file, sxp, file->mode))
iflags |= ITEM_REPORT_ACL;
}
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
if (!XATTR_READY(*sxp))
get_xattr(fnamecmp, sxp);
if (xattr_diff(file, sxp, 1))
iflags |= ITEM_REPORT_XATTR;
}
#endif
} else {
#ifdef SUPPORT_XATTRS
if (preserve_xattrs && xattr_diff(file, NULL, 1))
iflags |= ITEM_REPORT_XATTR;
#endif
iflags |= ITEM_IS_NEW;
}
iflags &= 0xffff;
if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
|| stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
if (protocol_version >= 29) {
if (ndx >= 0)
write_ndx(sock_f_out, ndx);
write_shortint(sock_f_out, iflags);
if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
write_byte(sock_f_out, fnamecmp_type);
if (iflags & ITEM_XNAME_FOLLOWS)
write_vstring(sock_f_out, xname, strlen(xname));
#ifdef SUPPORT_XATTRS
if (preserve_xattrs && do_xfers
&& iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
int fd = iflags & ITEM_REPORT_XATTR
&& !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
? sock_f_out : -1;
send_xattr_request(NULL, file, fd);
}
#endif
} else if (ndx >= 0) {
enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
log_item(code, file, iflags, xname);
}
}
}
/* Perform our quick-check heuristic for determining if a file is unchanged. */
int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st, int slot)
{
if (date_only)
return !mtime_differs(st, file);
if (st->st_size != F_LENGTH(file))
return 0;
/* if always checksum is set then we use the checksum instead
of the file time to determine whether to sync */
if (always_checksum > 0 && S_ISREG(st->st_mode)) {
char sum[MAX_DIGEST_LEN];
if (checksum_files && slot >= 0)
get_cached_checksum(slot, fn, file, -1, st, sum);
else
file_checksum(fn, st, sum);
return memcmp(sum, F_SUM(file), flist_csum_len) == 0;
}
if (size_only > 0)
return 1;
if (ignore_times)
return 0;
return !mtime_differs(st, file);
}
/*
* set (initialize) the size entries in the per-file sum_struct
* calculating dynamic block and checksum sizes.
*
* This is only called from generate_and_send_sums() but is a separate
* function to encapsulate the logic.
*
* The block size is a rounded square root of file length.
*
* The checksum size is determined according to:
* blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
* provided by Donovan Baarda which gives a probability of rsync
* algorithm corrupting data and falling back using the whole md4
* checksums.
*
* This might be made one of several selectable heuristics.
*/
static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
{
int32 blength;
int s2length;
int64 l;
if (len < 0) {
/* The file length overflowed our int64 var, so we can't process this file. */
sum->count = -1; /* indicate overflow error */
return;
}
if (block_size)
blength = block_size;
else if (len <= BLOCK_SIZE * BLOCK_SIZE)
blength = BLOCK_SIZE;
else {
int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
int32 c;
int cnt;
for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
if (c < 0 || c >= max_blength)
blength = max_blength;
else {
blength = 0;
do {
blength |= c;
if (len < (int64)blength * blength)
blength &= ~c;
c >>= 1;
} while (c >= 8); /* round to multiple of 8 */
blength = MAX(blength, BLOCK_SIZE);
}
}
if (protocol_version < 27) {
s2length = csum_length;
} else if (csum_length == SUM_LENGTH) {
s2length = SUM_LENGTH;
} else {
int32 c;
int b = BLOCKSUM_BIAS;
for (l = len; l >>= 1; b += 2) {}
for (c = blength; (c >>= 1) && b; b--) {}
/* add a bit, subtract rollsum, round up. */
s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
s2length = MAX(s2length, csum_length);
s2length = MIN(s2length, SUM_LENGTH);
}
sum->flength = len;
sum->blength = blength;
sum->s2length = s2length;
sum->remainder = (int32)(len % blength);
sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
if ((int64)sum->count != l)
sum->count = -1;
if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
rprintf(FINFO,
"count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
big_num(sum->count), (long)sum->remainder, (long)sum->blength,
sum->s2length, big_num(sum->flength));
}
}
/*
* Generate and send a stream of signatures/checksums that describe a buffer
*
* Generate approximately one checksum every block_len bytes.
*/
static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
{
int32 i;
struct map_struct *mapbuf;
struct sum_struct sum;
OFF_T offset = 0;
sum_sizes_sqroot(&sum, len);
if (sum.count < 0)
return -1;
write_sum_head(f_out, &sum);
if (append_mode > 0 && f_copy < 0)
return 0;
if (len > 0) {
mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
checksum2_enable_prefetch(mapbuf, len, sum.blength);
} else {
mapbuf = NULL;
}
for (i = 0; i < sum.count; i++) {
int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
char *map = map_ptr(mapbuf, offset, n1);
char sum2[SUM_LENGTH];
uint32 sum1;
len -= n1;
offset += n1;
if (f_copy >= 0) {
full_write(f_copy, map, n1);
if (append_mode > 0)
continue;
}
sum1 = get_checksum1(map, n1);
get_checksum2(map, n1, sum2, offset - n1);
if (DEBUG_GTE(DELTASUM, 3)) {
rprintf(FINFO,
"chunk[%s] offset=%s len=%ld sum1=%08lx\n",
big_num(i), big_num(offset - n1), (long)n1,
(unsigned long)sum1);
}
write_int(f_out, sum1);
write_buf(f_out, sum2, sum.s2length);
}
if (mapbuf) {
unmap_file(mapbuf);
checksum2_disable_prefetch();
}
return 0;
}
/* Try to find a filename in the same dir as "fname" with a similar name. */
static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
{
int fname_len, fname_suf_len;
const char *fname_suf, *fname = file->basename;
uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
int i, j;
struct file_struct *lowest_fp = NULL;
fname_len = strlen(fname);
fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
/* Try to find an exact size+mtime match first. */
for (i = 0; i < fuzzy_basis; i++) {
struct file_list *dirlist = dirlist_array[i];
if (!dirlist)
continue;
for (j = 0; j < dirlist->used; j++) {
struct file_struct *fp = dirlist->files[j];
if (!F_IS_ACTIVE(fp))
continue;
if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
continue;
if (F_LENGTH(fp) == F_LENGTH(file) && same_time(fp->modtime, 0, file->modtime, 0)) {
if (DEBUG_GTE(FUZZY, 2))
rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
*fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
return fp;
}
}
}
for (i = 0; i < fuzzy_basis; i++) {
struct file_list *dirlist = dirlist_array[i];
if (!dirlist)
continue;
for (j = 0; j < dirlist->used; j++) {
struct file_struct *fp = dirlist->files[j];
const char *suf, *name;
int len, suf_len;
uint32 dist;
if (!F_IS_ACTIVE(fp))
continue;
if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
continue;
name = fp->basename;
len = strlen(name);
suf = find_filename_suffix(name, len, &suf_len);
dist = fuzzy_distance(name, len, fname, fname_len);
/* Add some extra weight to how well the suffixes match. */
dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
if (DEBUG_GTE(FUZZY, 2)) {
rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
}
if (dist <= lowest_dist) {
lowest_dist = dist;
lowest_fp = fp;
*fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
}
}
}
return lowest_fp;
}
/* Copy a file found in our --copy-dest handling. */
static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
{
char buf[MAXPATHLEN];
const char *copy_to, *partialptr;
int save_preserve_xattrs = preserve_xattrs;
int ok, fd_w;
if (inplace) {
/* Let copy_file open the destination in place. */
fd_w = -1;
copy_to = dest;
} else {
fd_w = open_tmpfile(buf, dest, file);
if (fd_w < 0)
return -1;
copy_to = buf;
}
cleanup_set(copy_to, NULL, NULL, -1, -1);
if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
if (INFO_GTE(COPY, 1)) {
rsyserr(FINFO, errno, "copy_file %s => %s",
full_fname(src), copy_to);
}
/* Try to clean up. */
unlink(copy_to);
cleanup_disable();
return -1;
}
partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
preserve_xattrs = 0; /* xattrs were copied with file */
ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
preserve_xattrs = save_preserve_xattrs;
cleanup_disable();
return ok ? 0 : -1;
}
/* This is only called for regular files. We return -2 if we've finished
* handling the file, -1 if no dest-linking occurred, or a non-negative
* value if we found an alternate basis file. If we're called with the
* find_exact_for_existing flag, the destination file already exists, so
* we only try to find an exact alt-dest match. In this case, the returns
* are only -2 & -1 (both as above). */
static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
int itemizing, enum logcode code)
{
STRUCT_STAT real_st = sxp->st;
int best_match = -1;
int match_level = 0;
int j = 0;
do {
pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
continue;
if (match_level == 0) {
best_match = j;
match_level = 1;
}
if (!unchanged_file(cmpbuf, file, &sxp->st, j+1))
continue;
if (match_level == 1) {
best_match = j;
match_level = 2;
}
if (alt_dest_type == CLONE_DEST || unchanged_attrs(cmpbuf, file, sxp)) {
best_match = j;
match_level = 3;
break;
}
free_stat_x(sxp);
} while (basis_dir[++j] != NULL);
if (!match_level)
goto got_nothing_for_ya;
if (j != best_match) {
j = best_match;
pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
if (link_stat(cmpbuf, &sxp->st, 0) < 0)
goto got_nothing_for_ya;
}
if (match_level == 3 && alt_dest_type != COPY_DEST) {
if (find_exact_for_existing) {
if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
return -1;
if (do_unlink(fname) < 0 && errno != ENOENT)
goto got_nothing_for_ya;
}
#ifdef SUPPORT_HARD_LINKS
if (alt_dest_type == LINK_DEST) {
if (!hard_link_one(file, fname, cmpbuf, 1))
goto try_a_copy;
if (atimes_ndx)
set_file_attrs(fname, file, sxp, NULL, 0);
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
itemize(cmpbuf, file, ndx, 1, sxp,
ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
0, "");
}
} else
#endif
if (alt_dest_type == CLONE_DEST) {
if (do_clone(cmpbuf, fname, file->mode) < 0) {
rsyserr(FERROR_XFER, errno, "failed to clone %s to %s", cmpbuf, fname);
exit_cleanup(RERR_UNSUPPORTED);
}
} else {
if (itemizing)
itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
}
if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
rprintf(FCLIENT, "%s is uptodate\n", fname);
return -2;
}
if (find_exact_for_existing)
goto got_nothing_for_ya;
if (match_level >= 2) {
#ifdef SUPPORT_HARD_LINKS
try_a_copy: /* Copy the file locally. */
#endif
if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
if (find_exact_for_existing) /* Can get here via hard-link failure */
goto got_nothing_for_ya;
return -1;
}
if (itemizing)
itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
if (maybe_ATTRS_REPORT
&& ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
|| (INFO_GTE(NAME, 2) && match_level == 3))) {
code = match_level == 3 ? FCLIENT : FINFO;
rprintf(code, "%s%s\n", fname,
match_level == 3 ? " is uptodate" : "");
}
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
#endif
return -2;
}
return FNAMECMP_BASIS_DIR_LOW + j;
got_nothing_for_ya:
sxp->st = real_st;
return -1;
}
/* This is only called for non-regular files. We return -2 if we've finished
* handling the file, or -1 if no dest-linking occurred, or a non-negative
* value if we found an alternate basis file. */
static int try_dests_non(struct file_struct *file, char *fname, int ndx,
char *cmpbuf, stat_x *sxp, int itemizing,
enum logcode code)
{
int best_match = -1;
int match_level = 0;
enum nonregtype type;
uint32 *devp;
#ifdef SUPPORT_LINKS
char lnk[MAXPATHLEN];
int len;
#endif
int j = 0;
#ifndef SUPPORT_LINKS
if (S_ISLNK(file->mode))
return -1;
#endif
if (S_ISDIR(file->mode)) {
type = TYPE_DIR;
} else if (IS_SPECIAL(file->mode))
type = TYPE_SPECIAL;
else if (IS_DEVICE(file->mode))
type = TYPE_DEVICE;
#ifdef SUPPORT_LINKS
else if (S_ISLNK(file->mode))
type = TYPE_SYMLINK;
#endif
else {
rprintf(FERROR,
"internal: try_dests_non() called with invalid mode (%o)\n",
(int)file->mode);
exit_cleanup(RERR_UNSUPPORTED);
}
do {
pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
if (link_stat(cmpbuf, &sxp->st, 0) < 0)
continue;
switch (type) {
case TYPE_DIR:
if (!S_ISDIR(sxp->st.st_mode))
continue;
break;
case TYPE_SPECIAL:
if (!IS_SPECIAL(sxp->st.st_mode))
continue;
break;
case TYPE_DEVICE:
if (!IS_DEVICE(sxp->st.st_mode))
continue;
break;
case TYPE_SYMLINK:
#ifdef SUPPORT_LINKS
if (!S_ISLNK(sxp->st.st_mode))
continue;
break;
#else
return -1;
#endif
}
if (match_level < 1) {
match_level = 1;
best_match = j;
}
switch (type) {
case TYPE_DIR:
case TYPE_SPECIAL:
break;
case TYPE_DEVICE:
devp = F_RDEV_P(file);
if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
continue;
break;
case TYPE_SYMLINK:
#ifdef SUPPORT_LINKS
if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
continue;
lnk[len] = '\0';
if (strcmp(lnk, F_SYMLINK(file)) != 0)
continue;
break;
#else
return -1;
#endif
}
if (match_level < 2) {
match_level = 2;
best_match = j;
}
if (unchanged_attrs(cmpbuf, file, sxp)) {
match_level = 3;
best_match = j;
break;
}
} while (basis_dir[++j] != NULL);
if (!match_level)
return -1;
if (j != best_match) {
j = best_match;
pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
if (link_stat(cmpbuf, &sxp->st, 0) < 0)
return -1;
}
if (match_level == 3) {
#ifdef SUPPORT_HARD_LINKS
if ((alt_dest_type == LINK_DEST || alt_dest_type == CLONE_DEST)
#ifndef CAN_HARDLINK_SYMLINK
&& !S_ISLNK(file->mode)
#endif
#ifndef CAN_HARDLINK_SPECIAL
&& !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
#endif
&& !S_ISDIR(file->mode)) {
if (do_link(cmpbuf, fname) < 0) {
rsyserr(FERROR_XFER, errno,
"failed to hard-link %s with %s",
cmpbuf, fname);
return j;
}
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
} else
#endif
match_level = 2;
if (itemizing && stdout_format_has_i
&& (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
int chg = alt_dest_type == COMPARE_DEST && type != TYPE_DIR ? 0
: ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
char *lp = match_level == 3 ? "" : NULL;
itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
}
if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
rprintf(FCLIENT, "%s%s is uptodate\n",
fname, type == TYPE_DIR ? "/" : "");
}
return -2;
}
return j;
}
static void list_file_entry(struct file_struct *f)
{
char permbuf[PERMSTRING_SIZE];
const char *mtime_str = timestring(f->modtime);
int size_width = human_readable ? 14 : 11;
int mtime_width = 1 + strlen(mtime_str);
int atime_width = atimes_ndx ? mtime_width : 0;
int crtime_width = crtimes_ndx ? mtime_width : 0;
if (!F_IS_ACTIVE(f)) {
/* this can happen if duplicate names were removed */
return;
}
/* TODO: indicate '+' if the entry has an ACL. */
if (missing_args == 2 && f->mode == 0) {
rprintf(FINFO, "%-*s %s\n",
10 + 1 + size_width + mtime_width + atime_width + crtime_width, "*missing",
f_name(f, NULL));
} else {
const char *atime_str = atimes_ndx && !S_ISDIR(f->mode) ? timestring(F_ATIME(f)) : "";
const char *crtime_str = crtimes_ndx ? timestring(F_CRTIME(f)) : "";
const char *arrow, *lnk;
permstring(permbuf, f->mode);
#ifdef SUPPORT_LINKS
if (preserve_links && S_ISLNK(f->mode)) {
arrow = " -> ";
lnk = F_SYMLINK(f);
} else
#endif
arrow = lnk = "";
rprintf(FINFO, "%s %*s %s%*s%*s %s%s%s\n",
permbuf, size_width, human_num(F_LENGTH(f)),
timestring(f->modtime), atime_width, atime_str, crtime_width, crtime_str,
f_name(f, NULL), arrow, lnk);
}
}
static struct bitbag *delayed_bits = NULL;
static int phase = 0;
static int dflt_perms;
static int implied_dirs_are_missing;
/* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
{
return F_DEPTH(file) > F_DEPTH(subtree)
&& (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
}
/* Acts on the indicated item in cur_flist whose name is fname. If a dir,
* make sure it exists, and has the right permissions/timestamp info. For
* all other non-regular files (symlinks, etc.) we create them here. For
* regular files that have changed, we try to find a basis file and then
* start sending checksums. The ndx is the file's unique index value.
*
* The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
* passed to delete_item(), which can use it during a recursive delete.)
*
* Note that f_out is set to -1 when doing final directory-permission and
* modification-time repair. */
static void recv_generator(char *fname, struct file_struct *file, int ndx,
int itemizing, enum logcode code, int f_out)
{
static const char *parent_dirname = "";
static struct file_struct *prior_dir_file = NULL;
/* Missing dir not created due to --dry-run; will still be scanned. */
static struct file_struct *dry_missing_dir = NULL;
/* Missing dir whose contents are skipped altogether due to
* --ignore-non-existing, daemon exclude, or mkdir failure. */
static struct file_struct *skip_dir = NULL;
static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
static int need_new_dirscan = 0;
struct file_struct *fuzzy_file = NULL;
int fd = -1, f_copy = -1;
stat_x sx, real_sx;
STRUCT_STAT partial_st;
struct file_struct *back_file = NULL;
int statret, real_ret, stat_errno;
char *fnamecmp, *partialptr, *backupptr = NULL;
char fnamecmpbuf[MAXPATHLEN];
uchar fnamecmp_type;
int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
int is_dir = !S_ISDIR(file->mode) ? 0
: inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
: 1;
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
if (list_only) {
if (is_dir < 0
|| (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
return;
list_file_entry(file);
return;
}
maybe_ATTRS_ACCURATE_TIME = always_checksum ? ATTRS_ACCURATE_TIME : 0;
if (skip_dir) {
if (is_below(file, skip_dir)) {
if (is_dir)
file->flags |= FLAG_MISSING_DIR;
#ifdef SUPPORT_HARD_LINKS
else if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
return;
}
skip_dir = NULL;
}
init_stat_x(&sx);
if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
if (is_dir < 0)
return;
#ifdef SUPPORT_HARD_LINKS
if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
rprintf(FERROR_XFER,
"ERROR: daemon refused to receive %s \"%s\"\n",
is_dir ? "directory" : "file", fname);
if (is_dir)
goto skipping_dir_contents;
return;
}
}
sx.crtime = 0;
if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
int i;
parent_is_dry_missing:
for (i = 0; i < fuzzy_basis; i++) {
if (fuzzy_dirlist[i]) {
flist_free(fuzzy_dirlist[i]);
fuzzy_dirlist[i] = NULL;
}
}
parent_dirname = "";
statret = -1;
stat_errno = ENOENT;
} else {
const char *dn = file->dirname ? file->dirname : ".";
dry_missing_dir = NULL;
if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
/* Each parent dir must be in the file list or the flist data is bad.
* Optimization: most of the time the parent dir will be the last dir
* this function was asked to process in the file list. */
if (!inc_recurse
&& (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
&& (!prior_dir_file || strcmp(dn, f_name(prior_dir_file, NULL)) != 0)) {
int ok = 0, j = flist_find_name(cur_flist, dn, -1);
if (j >= 0) {
struct file_struct *f = cur_flist->sorted[j];
if (S_ISDIR(f->mode) || (missing_args == 2 && !file->mode && !f->mode))
ok = 1;
}
/* The --delete-missing-args option can actually put invalid entries into
* the file list, so if that option was specified, we'll just complain about
* it and allow it. */
if (!ok && missing_args == 2 && file->mode == 0 && j < 0)
rprintf(FERROR, "WARNING: parent dir is absent in the file list: %s\n", dn);
else if (!ok) {
rprintf(FERROR, "ABORTING due to invalid path from sender: %s/%s\n",
dn, file->basename);
exit_cleanup(RERR_PROTOCOL);
}
}
if (relative_paths && !implied_dirs && file->mode != 0
&& do_stat(dn, &sx.st) < 0) {
if (dry_run)
goto parent_is_dry_missing;
if (make_path(fname, ACCESSPERMS, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
rsyserr(FERROR_XFER, errno,
"recv_generator: mkdir %s failed",
full_fname(dn));
}
}
if (fuzzy_basis) {
int i;
for (i = 0; i < fuzzy_basis; i++) {
if (fuzzy_dirlist[i]) {
flist_free(fuzzy_dirlist[i]);
fuzzy_dirlist[i] = NULL;
}
}
need_new_dirscan = 1;
} else if (checksum_files)
need_new_dirscan = 1;
#ifdef SUPPORT_ACLS
if (!preserve_perms)
dflt_perms = default_perms_for_dir(dn);
#endif
}
parent_dirname = dn;
if (need_new_dirscan && S_ISREG(file->mode)) {
int i;
strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
for (i = 0; i < fuzzy_basis; i++) {
if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
continue;
fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES | GDL_PERHAPS_DIR);
if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
flist_free(fuzzy_dirlist[i]);
fuzzy_dirlist[i] = NULL;
}
}
if (checksum_files) {
reset_checksum_cache(started_whole_dir);
started_whole_dir = upcoming_whole_dir;
}
need_new_dirscan = 0;
}
statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
stat_errno = errno;
}
if (missing_args == 2 && file->mode == 0) {
if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
return;
if (statret == 0)
delete_item(fname, sx.st.st_mode, del_opts);
return;
}
if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
if (is_dir) {
if (is_dir < 0)
return;
skip_dir = file;
file->flags |= FLAG_MISSING_DIR;
}
#ifdef SUPPORT_HARD_LINKS
else if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
if (INFO_GTE(SKIP, 1)) {
rprintf(FINFO, "not creating new %s \"%s\"\n",
is_dir ? "directory" : "file", fname);
}
return;
}
if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
&& !am_root && sx.st.st_uid == our_uid)
del_opts |= DEL_NO_UID_WRITE;
if (ignore_existing > 0 && statret == 0
&& (!is_dir || !S_ISDIR(sx.st.st_mode))) {
if (INFO_GTE(SKIP, 1) && is_dir >= 0)
rprintf(FINFO, "%s exists\n", fname);
#ifdef SUPPORT_HARD_LINKS
if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
goto cleanup;
}
fnamecmp = fname;
if (is_dir) {
mode_t added_perms;
if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
goto cleanup;
if (am_root < 0) {
/* For --fake-super, the dir must be useable by the copying
* user, just like it would be for root. */
added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
} else
added_perms = 0;
if (is_dir < 0) {
if (!(preserve_times & PRESERVE_DIR_TIMES))
goto cleanup;
/* In inc_recurse mode we want to make sure any missing
* directories get created while we're still processing
* the parent dir (which allows us to touch the parent
* dir's mtime right away). We will handle the dir in
* full later (right before we handle its contents). */
if (statret == 0
&& (S_ISDIR(sx.st.st_mode)
|| delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
goto cleanup; /* Any errors get reported later. */
if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
file->flags |= FLAG_DIR_CREATED;
goto cleanup;
}
/* The file to be received is a directory, so we need
* to prepare appropriately. If there is already a
* file of that name and it is *not* a directory, then
* we need to delete it. If it doesn't exist, then
* (perhaps recursively) create it. */
if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
goto skipping_dir_contents;
statret = -1;
}
if (dry_run && statret != 0) {
if (!dry_missing_dir)
dry_missing_dir = file;
file->flags |= FLAG_MISSING_DIR;
}
init_stat_x(&real_sx);
real_sx.st = sx.st;
real_ret = statret;
if (file->flags & FLAG_DIR_CREATED)
statret = -1;
if (!preserve_perms || omit_dir_changes) { /* See comment in non-dir code below. */
file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, statret == 0);
}
#ifdef SUPPORT_FORCE_CHANGE
if (force_change && !preserve_fileflags)
F_FFLAGS(file) = sx.st.st_flags;
#endif
if (statret != 0 && basis_dir[0] != NULL) {
int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
if (j == -2) {
itemizing = 0;
code = FNONE;
statret = 1;
} else if (j >= 0) {
statret = 1;
fnamecmp = fnamecmpbuf;
}
}
if (itemizing && f_out != -1) {
itemize(fnamecmp, file, ndx, statret, &sx,
statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
}
if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
if (!relative_paths || errno != ENOENT
|| make_path(fname, ACCESSPERMS, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
|| (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
rsyserr(FERROR_XFER, errno,
"recv_generator: mkdir %s failed",
full_fname(fname));
skipping_dir_contents:
rprintf(FERROR, "*** Skipping any contents from this failed directory ***\n");
skip_dir = file;
file->flags |= FLAG_MISSING_DIR;
goto cleanup;
}
}
#ifdef SUPPORT_XATTRS
if (preserve_xattrs && statret == 1)
copy_xattrs(fnamecmpbuf, fname);
#endif
if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
&& INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
rprintf(code, "%s/\n", fname);
/* We need to ensure that the dirs in the transfer have both
* readable and writable permissions during the time we are
* putting files within them. This is then restored to the
* former permissions after the transfer is done. */
#ifdef SUPPORT_FORCE_CHANGE
if (force_change && F_FFLAGS(file) & force_change
&& make_mutable(fname, file->mode, F_FFLAGS(file), force_change))
need_retouch_dir_perms = 1;
#endif
#ifdef HAVE_CHMOD
if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
mode_t mode = file->mode | S_IRWXU;
if (do_chmod(fname, mode, 0) < 0) {
rsyserr(FERROR_XFER, errno,
"failed to modify permissions on %s",
full_fname(fname));
}
need_retouch_dir_perms = 1;
}
#endif
if (real_ret != 0 && one_file_system)
real_sx.st.st_dev = filesystem_dev;
if (inc_recurse) {
if (one_file_system) {
uint32 *devp = F_DIR_DEV_P(file);
DEV_MAJOR(devp) = major(real_sx.st.st_dev);
DEV_MINOR(devp) = minor(real_sx.st.st_dev);
}
}
else if (delete_during && f_out != -1 && !phase
&& !(file->flags & FLAG_MISSING_DIR)) {
if (file->flags & FLAG_CONTENT_DIR) {
if (detect_renamed && real_ret != 0)
unexplored_dirs++;
delete_in_dir(fname, file, &real_sx.st.st_dev,
delete_during < 0 ? DEL_NO_DELETIONS : 0);
} else
change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
}
upcoming_whole_dir = file->flags & FLAG_CONTENT_DIR && f_out != -1 ? 1 : 0;
prior_dir_file = file;
goto cleanup;
}
/* 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 = statret == 0 && !S_ISDIR(sx.st.st_mode);
file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, exists);
}
#ifdef SUPPORT_FORCE_CHANGE
if (force_change && !preserve_fileflags)
F_FFLAGS(file) = sx.st.st_flags;
#endif
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
&& hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
goto cleanup;
#endif
if (preserve_links && S_ISLNK(file->mode)) {
#ifdef SUPPORT_LINKS
const char *sl = F_SYMLINK(file);
if (safe_symlinks && unsafe_symlink(sl, fname)) {
if (INFO_GTE(NAME, 1)) {
if (solo_file) {
/* fname contains the destination path, but we
* want to report the source path. */
fname = f_name(file, NULL);
}
rprintf(FINFO,
"ignoring unsafe symlink \"%s\" -> \"%s\"\n",
fname, sl);
}
goto cleanup;
}
if (statret == 0) {
char lnk[MAXPATHLEN];
int len;
if (S_ISLNK(sx.st.st_mode)
&& (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
&& strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
/* The link is pointing to the right place. */
set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
if (itemizing)
itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
#endif
if (remove_source_files == 1)
goto return_with_success;
goto cleanup;
}
} else if (basis_dir[0] != NULL) {
int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
if (j == -2) {
#ifndef CAN_HARDLINK_SYMLINK
if (alt_dest_type == LINK_DEST) {
/* Resort to --copy-dest behavior. */
} else
#endif
if (alt_dest_type != COPY_DEST)
goto cleanup;
itemizing = 0;
code = FNONE;
} else if (j >= 0) {
statret = 1;
fnamecmp = fnamecmpbuf;
}
}
if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
set_file_attrs(fname, file, NULL, NULL, 0);
if (itemizing) {
if (statret == 0 && !S_ISLNK(sx.st.st_mode))
statret = -1;
itemize(fnamecmp, file, ndx, statret, &sx,
ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
}
if (code != FNONE && INFO_GTE(NAME, 1))
rprintf(code, "%s -> %s\n", fname, sl);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
#endif
/* This does not check remove_source_files == 1
* because this is one of the items that the old
* --remove-sent-files option would remove. */
if (remove_source_files)
goto return_with_success;
}
#endif
goto cleanup;
}
if ((am_root && preserve_devices && IS_DEVICE(file->mode))
|| (preserve_specials && IS_SPECIAL(file->mode))) {
dev_t rdev;
int del_for_flag = 0;
if (IS_DEVICE(file->mode)) {
uint32 *devp = F_RDEV_P(file);
rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
} else
rdev = 0;
if (statret == 0) {
if (IS_DEVICE(file->mode)) {
if (!IS_DEVICE(sx.st.st_mode))
statret = -1;
del_for_flag = DEL_FOR_DEVICE;
} else {
if (!IS_SPECIAL(sx.st.st_mode))
statret = -1;
del_for_flag = DEL_FOR_SPECIAL;
}
if (statret == 0
&& BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
&& (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
/* The device or special file is identical. */
set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
if (itemizing)
itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
#endif
if (remove_source_files == 1)
goto return_with_success;
goto cleanup;
}
} else if (basis_dir[0] != NULL) {
int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
if (j == -2) {
#ifndef CAN_HARDLINK_SPECIAL
if (alt_dest_type == LINK_DEST) {
/* Resort to --copy-dest behavior. */
} else
#endif
if (alt_dest_type != COPY_DEST)
goto cleanup;
itemizing = 0;
code = FNONE;
} else if (j >= 0) {
statret = 1;
fnamecmp = fnamecmpbuf;
}
}
if (DEBUG_GTE(GENR, 1)) {
rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
fname, (int)file->mode,
(long)major(rdev), (long)minor(rdev));
}
if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
set_file_attrs(fname, file, NULL, NULL, 0);
if (itemizing) {
itemize(fnamecmp, file, ndx, statret, &sx,
ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
}
if (code != FNONE && INFO_GTE(NAME, 1))
rprintf(code, "%s\n", fname);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
#endif
if (remove_source_files == 1)
goto return_with_success;
}
goto cleanup;
}
if (!(S_ISREG(file->mode) || (copy_devices && IS_DEVICE(file->mode)))) {
if (solo_file)
fname = f_name(file, NULL);
rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
goto cleanup;
}
if (max_size >= 0 && F_LENGTH(file) > max_size) {
if (INFO_GTE(SKIP, 1)) {
if (solo_file)
fname = f_name(file, NULL);
rprintf(FINFO, "%s is over max-size\n", fname);
}
goto cleanup;
}
if (min_size >= 0 && F_LENGTH(file) < min_size) {
if (INFO_GTE(SKIP, 1)) {
if (solo_file)
fname = f_name(file, NULL);
rprintf(FINFO, "%s is under min-size\n", fname);
}
goto cleanup;
}
if (update_only > 0 && statret == 0 && file->modtime - sx.st.st_mtime <= modify_window) {
if (INFO_GTE(SKIP, 1))
rprintf(FINFO, "%s is newer\n", fname);
#ifdef SUPPORT_HARD_LINKS
if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
goto cleanup;
}
if (downdate_only > 0 && statret == 0 && file->modtime - sx.st.st_mtime >= modify_window) {
if (INFO_GTE(SKIP, 1))
rprintf(FINFO, "%s is older\n", fname);
return;
}
fnamecmp_type = FNAMECMP_FNAME;
if (statret == 0 && !(S_ISREG(sx.st.st_mode) || (write_devices && IS_DEVICE(sx.st.st_mode)))) {
if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
goto cleanup;
statret = -1;
stat_errno = ENOENT;
}
if (basis_dir[0] != NULL && (statret != 0 || alt_dest_type != COPY_DEST)) {
int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx, statret == 0, itemizing, code);
if (j == -2) {
if (remove_source_files == 1)
goto return_with_success;
goto cleanup;
}
if (j >= 0) {
fnamecmp = fnamecmpbuf;
fnamecmp_type = j;
statret = 0;
}
}
init_stat_x(&real_sx);
real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
real_ret = statret;
if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
&& link_stat(partialptr, &partial_st, 0) == 0
&& S_ISREG(partial_st.st_mode)) {
if (statret != 0)
goto prepare_to_open;
} else
partialptr = NULL;
if (statret != 0 && fuzzy_basis) {
/* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
if (fuzzy_file) {
f_name(fuzzy_file, fnamecmpbuf);
if (DEBUG_GTE(FUZZY, 1)) {
rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
fname, fnamecmpbuf);
}
sx.st.st_size = F_LENGTH(fuzzy_file);
#ifdef SUPPORT_HFS_COMPRESSION
if (sx.st.st_flags & UF_COMPRESSED) {
if (preserve_hfs_compression)
sx.st.st_size = 0;
else
sx.st.st_flags &= ~UF_COMPRESSED;
}
#endif
statret = 0;
fnamecmp = fnamecmpbuf;
}
}
if (statret != 0) {
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
cur_flist->in_progress++;
goto cleanup;
}
#endif
if (stat_errno == ENOENT) {
if (detect_renamed && unexplored_dirs > 0
&& F_LENGTH(file)) {
bitbag_set_bit(delayed_bits, ndx);
return;
}
goto notify_others;
}
rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
full_fname(fname));
goto cleanup;
}
if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
;
else if (fnamecmp_type >= FNAMECMP_FUZZY)
;
else if (unchanged_file(fnamecmp, file, &sx.st, fnamecmp_type == FNAMECMP_FNAME ? 0 : -1)) {
if (partialptr) {
do_unlink(partialptr);
handle_partial_dir(partialptr, PDIR_DELETE);
}
set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
if (checksum_files & CSF_UPDATE)
set_cached_checksum(cur_flist, file);
if (itemizing)
itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
#endif
if (remove_source_files != 1)
goto cleanup;
return_with_success:
if (!dry_run)
send_msg_int(MSG_SUCCESS, ndx);
goto cleanup;
}
if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
#ifdef SUPPORT_HARD_LINKS
if (F_IS_HLINKED(file))
handle_skipped_hlink(file, itemizing, code, f_out);
#endif
goto cleanup;
}
prepare_to_open:
if (partialptr) {
sx.st = partial_st;
fnamecmp = partialptr;
fnamecmp_type = FNAMECMP_PARTIAL_DIR;
statret = 0;
if (detect_renamed > 1 && unchanged_file(fnamecmp, file, &sx.st)) {
/* Adopt the partial file. */
finish_transfer(fname, fnamecmp, NULL, NULL, file, 1, 1);
handle_partial_dir(partialptr, PDIR_DELETE);
if (itemizing)
itemize(fnamecmp, file, ndx, -1, &sx,
ITEM_LOCAL_CHANGE, fnamecmp_type, NULL);
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
#endif
if (remove_source_files == 1)
goto return_with_success;
goto cleanup;
}
}
if (!do_xfers)
goto notify_others;
if (read_batch || whole_file) {
if (inplace && make_backups > 1 && fnamecmp_type == FNAMECMP_FNAME) {
if (!(backupptr = get_backup_name(fname)))
goto cleanup;
if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
goto pretend_missing;
if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
unmake_file(back_file);
back_file = NULL;
goto cleanup;
}
}
goto notify_others;
}
if (fuzzy_dirlist[0]) {
int j = flist_find(fuzzy_dirlist[0], file);
if (j >= 0) /* don't use changing file as future fuzzy basis */
fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
}
/* open the file */
if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
rsyserr(FERROR, errno, "failed to open %s, continuing",
full_fname(fnamecmp));
pretend_missing:
/* pretend the file didn't exist */
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
cur_flist->in_progress++;
goto cleanup;
}
#endif
statret = real_ret = -1;
goto notify_others;
}
if (inplace && make_backups > 1 && fnamecmp_type == FNAMECMP_FNAME) {
if (!(backupptr = get_backup_name(fname))) {
close(fd);
goto cleanup;
}
if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
close(fd);
goto pretend_missing;
}
if (robust_unlink(backupptr) && errno != ENOENT) {
rsyserr(FERROR_XFER, errno, "unlink %s",
full_fname(backupptr));
unmake_file(back_file);
back_file = NULL;
close(fd);
goto cleanup;
}
if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
unmake_file(back_file);
back_file = NULL;
close(fd);
goto cleanup;
}
fnamecmp_type = FNAMECMP_BACKUP;
}
if (IS_DEVICE(sx.st.st_mode) && sx.st.st_size == 0)
sx.st.st_size = get_device_size(fd, fnamecmp);
if (DEBUG_GTE(DELTASUM, 3)) {
rprintf(FINFO, "gen mapped %s of size %s\n",
fnamecmp, big_num(sx.st.st_size));
}
if (DEBUG_GTE(DELTASUM, 2))
rprintf(FINFO, "generating and sending sums for %d\n", ndx);
notify_others:
if (remove_source_files && !delay_updates && !phase && !dry_run)
increment_active_files(ndx, itemizing, code);
if (inc_recurse && (!dry_run || write_batch < 0))
cur_flist->in_progress++;
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
file->flags |= FLAG_FILE_SENT;
#endif
write_ndx(f_out, ndx);
if (itemizing) {
int iflags = ITEM_TRANSFER;
if (always_checksum > 0)
iflags |= ITEM_REPORT_CHANGE;
if (fnamecmp_type != FNAMECMP_FNAME)
iflags |= ITEM_BASIS_TYPE_FOLLOWS;
if (fnamecmp_type >= FNAMECMP_FUZZY)
iflags |= ITEM_XNAME_FOLLOWS;
itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
fuzzy_file ? fuzzy_file->basename : NULL);
free_stat_x(&real_sx);
}
if (!do_xfers) {
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && F_IS_HLINKED(file))
finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
#endif
goto cleanup;
}
if (read_batch)
goto cleanup;
#ifdef SUPPORT_HFS_COMPRESSION
if (F_FFLAGS(file) & UF_COMPRESSED) {
/* At this point the attrs have already been copied, we don't need to transfer a data fork
* If my filesystem doesn't support HFS compression, the existing file's content
* will not be automatically truncated, so we'll do that manually here */
if (preserve_hfs_compression && sx.st.st_size > 0) {
if (ftruncate(fd, 0) == 0)
sx.st.st_size = 0;
}
}
#endif
if (statret != 0 || whole_file)
write_sum_head(f_out, NULL);
else if (sx.st.st_size <= 0) {
write_sum_head(f_out, NULL);
close(fd);
} else {
if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
rprintf(FWARNING,
"WARNING: file is too large for checksum sending: %s\n",
fnamecmp);
write_sum_head(f_out, NULL);
}
close(fd);
}
cleanup:
if (back_file) {
int save_preserve_xattrs = preserve_xattrs;
if (f_copy >= 0)
close(f_copy);
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
copy_xattrs(fname, backupptr);
preserve_xattrs = 0;
}
#endif
set_file_attrs(backupptr, back_file, NULL, NULL, 0);
preserve_xattrs = save_preserve_xattrs;
if (INFO_GTE(BACKUP, 1)) {
rprintf(FINFO, "backed up %s to %s\n",
fname, backupptr);
}
unmake_file(back_file);
}
free_stat_x(&sx);
}
/* If we are replacing an existing hard link, symlink, device, or special file,
* create a temp-name item and rename it into place. A symlimk specifies slnk,
* a hard link specifies hlnk, otherwise we create a device based on rdev.
* Specify 0 for the del_for_flag if there is not a file to replace. This
* returns 1 on success and 0 on failure. */
int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
dev_t rdev, stat_x *sxp, int del_for_flag)
{
char tmpname[MAXPATHLEN];
const char *create_name;
int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
skip_atomic = 1;
else
skip_atomic = 0;
if (del_for_flag) {
if (make_backups > 1 && !dir_in_the_way) {
if (!make_backup(fname, skip_atomic))
return 0;
} else if (skip_atomic) {
int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
return 0;
}
}
create_name = skip_atomic ? fname : tmpname;
if (slnk) {
#ifdef SUPPORT_LINKS
if (do_symlink(slnk, create_name) < 0) {
rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
full_fname(create_name), slnk);
return 0;
}
#else
return 0;
#endif
} else if (hlnk) {
#ifdef SUPPORT_HARD_LINKS
if (!hard_link_one(file, create_name, hlnk, 0))
return 0;
#else
return 0;
#endif
} else {
if (do_mknod(create_name, file->mode, rdev) < 0) {
rsyserr(FERROR_XFER, errno, "mknod %s failed",
full_fname(create_name));
return 0;
}
}
if (!skip_atomic) {
if (do_rename(tmpname, fname) < 0) {
rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
full_fname(tmpname), full_fname(fname));
do_unlink(tmpname);
return 0;
}
}
return 1;
}
#ifdef SUPPORT_HARD_LINKS
static void handle_skipped_hlink(struct file_struct *file, int itemizing,
enum logcode code, int f_out)
{
char fbuf[MAXPATHLEN];
int new_last_ndx;
struct file_list *save_flist = cur_flist;
/* If we skip the last item in a chain of links and there was a
* prior non-skipped hard-link waiting to finish, finish it now. */
if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
return;
file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
cur_flist->in_progress--; /* undo prior increment */
f_name(file, fbuf);
recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
cur_flist = save_flist;
}
#endif
static void touch_up_dirs(struct file_list *flist, int ndx)
{
static int counter = 0;
struct file_struct *file;
char *fname;
BOOL fix_dir_perms;
int i, start, end;
if (ndx < 0) {
start = 0;
end = flist->used - 1;
} else
start = end = ndx;
/* Fix any directory permissions that were modified during the
* transfer and/or re-set any tweaked modified-time values. */
for (i = start; i <= end; i++, counter++) {
file = flist->files[i];
if (!F_IS_ACTIVE(file))
continue;
if (!S_ISDIR(file->mode)
|| (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
continue;
if (DEBUG_GTE(TIME, 2)) {
fname = f_name(file, NULL);
rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
NS(fname), i);
}
/* Be sure not to retouch permissions with --fake-super. */
fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
continue;
fname = f_name(file, NULL);
if (fix_dir_perms)
do_chmod(fname, file->mode, 0);
if (need_retouch_dir_times) {
STRUCT_STAT st;
if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
st.st_mtime = file->modtime;
#ifdef ST_MTIME_NSEC
st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
#endif
#ifdef SUPPORT_FORCE_CHANGE
st.st_mode = file->mode;
st.st_flags = 0;
#endif
set_times(fname, &st);
}
}
#ifdef SUPPORT_FORCE_CHANGE
if (force_change && F_FFLAGS(file) & force_change)
undo_make_mutable(fname, F_FFLAGS(file));
#endif
if (counter >= loopchk_limit) {
if (allowed_lull)
maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
else
maybe_flush_socket(0);
counter = 0;
}
}
}
void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
{
struct file_struct *file;
struct file_list *flist;
char fbuf[MAXPATHLEN];
int ndx;
while (1) {
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
int send_failed = (ndx == -2);
if (send_failed)
ndx = get_hlink_num();
flist = flist_for_ndx(ndx, "check_for_finished_files.1");
file = flist->files[ndx - flist->ndx_start];
assert(file->flags & FLAG_HLINKED);
if (send_failed)
handle_skipped_hlink(file, itemizing, code, sock_f_out);
else
finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
flist->in_progress--;
continue;
}
#endif
if (check_redo && (ndx = get_redo_num()) != -1) {
OFF_T save_max_size = max_size;
OFF_T save_min_size = min_size;
csum_length = SUM_LENGTH;
max_size = -1;
min_size = -1;
ignore_existing = -ignore_existing;
ignore_non_existing = -ignore_non_existing;
update_only = -update_only;
downdate_only = -downdate_only;
downdate_only = -downdate_only;
always_checksum = -always_checksum;
size_only = -size_only;
append_mode = -append_mode;
make_backups = -make_backups; /* avoid dup backup w/inplace */
ignore_times++;
flist = cur_flist;
cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
file = cur_flist->files[ndx - cur_flist->ndx_start];
if (solo_file)
strlcpy(fbuf, solo_file, sizeof fbuf);
else
f_name(file, fbuf);
recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
cur_flist->to_redo--;
cur_flist = flist;
csum_length = SHORT_SUM_LENGTH;
max_size = save_max_size;
min_size = save_min_size;
ignore_existing = -ignore_existing;
ignore_non_existing = -ignore_non_existing;
update_only = -update_only;
always_checksum = -always_checksum;
size_only = -size_only;
append_mode = -append_mode;
make_backups = -make_backups;
ignore_times--;
continue;
}
if (cur_flist == first_flist)
break;
/* We only get here if inc_recurse is enabled. */
if (first_flist->in_progress || first_flist->to_redo)
break;
write_ndx(sock_f_out, NDX_DONE);
if (!read_batch && !flist_eof) {
int old_total = 0;
for (flist = first_flist; flist != cur_flist; flist = flist->next)
old_total += flist->used;
maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
}
if (delete_during == 2 || !dir_tweaking) {
/* Skip directory touch-up. */
} else if (first_flist->parent_ndx >= 0)
touch_up_dirs(dir_flist, first_flist->parent_ndx);
flist_free(first_flist); /* updates first_flist */
}
}
void generate_files(int f_out, const char *local_name)
{
int i, ndx, next_loopchk = 0;
char fbuf[MAXPATHLEN];
int itemizing;
enum logcode code;
int save_info_flist = info_levels[INFO_FLIST];
int save_info_progress = info_levels[INFO_PROGRESS];
if (protocol_version >= 29) {
itemizing = 1;
maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
code = logfile_format_has_i ? FNONE : FLOG;
} else if (am_daemon) {
itemizing = logfile_format_has_i && do_xfers;
maybe_ATTRS_REPORT = ATTRS_REPORT;
code = itemizing || !do_xfers ? FCLIENT : FINFO;
} else if (!am_server) {
itemizing = stdout_format_has_i;
maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
code = itemizing ? FNONE : FINFO;
} else {
itemizing = 0;
maybe_ATTRS_REPORT = ATTRS_REPORT;
code = FINFO;
}
solo_file = local_name;
dir_tweaking = !(list_only || solo_file || dry_run);
need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
symlink_timeset_failed_flags = ITEM_REPORT_TIME
| (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
if (detect_renamed) {
delayed_bits = bitbag_create(cur_flist->used);
if (!delete_before && !delete_during)
delete_during = -1;
}
if (delete_before && !solo_file && cur_flist->used > 0)
do_delete_pass();
if (delete_during == 2) {
deldelay_size = BIGPATHBUFLEN * 4;
deldelay_buf = new_array(char, deldelay_size);
}
info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
if (append_mode > 0 || detect_renamed || whole_file < 0)
whole_file = 0;
if (DEBUG_GTE(FLIST, 1)) {
rprintf(FINFO, "delta-transmission %s\n",
whole_file
? "disabled for local transfer or --whole-file"
: "enabled");
}
if (use_db) {
if (always_checksum || (append_mode != 1 && protocol_version >= 30))
db_connect(0); /* Will reset use_db on error. */
else
use_db = 0;
}
dflt_perms = (ACCESSPERMS & ~orig_umask);
do {
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && inc_recurse) {
while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
wait_for_receiver();
}
#endif
if (inc_recurse && cur_flist->parent_ndx >= 0) {
struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
if (solo_file)
strlcpy(fbuf, solo_file, sizeof fbuf);
else
f_name(fp, fbuf);
ndx = cur_flist->ndx_start - 1;
recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
if (delete_during && dry_run < 2 && !list_only
&& !(fp->flags & FLAG_MISSING_DIR)) {
if (fp->flags & FLAG_CONTENT_DIR) {
dev_t dirdev;
if (one_file_system) {
uint32 *devp = F_DIR_DEV_P(fp);
dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
} else
dirdev = MAKEDEV(0, 0);
delete_in_dir(fbuf, fp, &dirdev, 0);
} else
change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
}
upcoming_whole_dir = fp->flags & FLAG_CONTENT_DIR ? 1 : 0;
}
for (i = cur_flist->low; i <= cur_flist->high; i++) {
struct file_struct *file = cur_flist->sorted[i];
if (!F_IS_ACTIVE(file))
continue;
if (unsort_ndx)
ndx = F_NDX(file);
else
ndx = i + cur_flist->ndx_start;
if (solo_file)
strlcpy(fbuf, solo_file, sizeof fbuf);
else
f_name(file, fbuf);
recv_generator(fbuf, file, ndx, itemizing, code, f_out);
check_for_finished_files(itemizing, code, 0);
if (i + cur_flist->ndx_start >= next_loopchk) {
if (allowed_lull)
maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
else
maybe_flush_socket(0);
next_loopchk += loopchk_limit;
}
}
if (!inc_recurse) {
write_ndx(f_out, NDX_DONE);
break;
}
while (1) {
check_for_finished_files(itemizing, code, 1);
if (cur_flist->next || flist_eof)
break;
wait_for_receiver();
}
} while ((cur_flist = cur_flist->next) != NULL);
if (delete_during)
delete_in_dir(NULL, NULL, &dev_zero, 0);
if (detect_renamed) {
if (delete_during < 0)
delete_during = 0;
detect_renamed = 0;
for (i = -1; (i = bitbag_next_bit(delayed_bits, i)) >= 0; ) {
struct file_struct *file = cur_flist->files[i];
if (local_name)
strlcpy(fbuf, local_name, sizeof fbuf);
else
f_name(file, fbuf);
recv_generator(fbuf, file, i, itemizing, code, f_out);
}
}
phase++;
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "generate_files phase=%d\n", phase);
while (1) {
check_for_finished_files(itemizing, code, 1);
if (msgdone_cnt)
break;
wait_for_receiver();
}
phase++;
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "generate_files phase=%d\n", phase);
write_ndx(f_out, NDX_DONE);
/* Reduce round-trip lag-time for a useless delay-updates phase. */
if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
write_ndx(f_out, NDX_DONE);
if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
write_del_stats(f_out);
if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
write_ndx(f_out, NDX_DONE);
}
/* Read MSG_DONE for the redo phase (and any prior messages). */
while (1) {
check_for_finished_files(itemizing, code, 0);
if (msgdone_cnt > 1)
break;
wait_for_receiver();
}
if (protocol_version >= 29) {
phase++;
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "generate_files phase=%d\n", phase);
if (!EARLY_DELAY_DONE_MSG()) {
write_ndx(f_out, NDX_DONE);
if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
write_ndx(f_out, NDX_DONE);
}
/* Read MSG_DONE for delay-updates phase & prior messages. */
while (msgdone_cnt == 2)
wait_for_receiver();
}
if (checksum_files)
reset_checksum_cache(started_whole_dir);
if (use_db)
db_disconnect(True);
info_levels[INFO_FLIST] = save_info_flist;
info_levels[INFO_PROGRESS] = save_info_progress;
if (delete_during == 2)
do_delayed_deletions(fbuf);
if (delete_after && !solo_file && file_total > 0)
do_delete_pass();
if (max_delete >= 0 && skipped_deletes) {
rprintf(FWARNING,
"Deletions stopped due to --max-delete limit (%d skipped)\n",
skipped_deletes);
io_error |= IOERR_DEL_LIMIT;
}
if (protocol_version >= 31) {
if (!EARLY_DELETE_DONE_MSG()) {
if (INFO_GTE(STATS, 2) || read_batch)
write_del_stats(f_out);
write_ndx(f_out, NDX_DONE);
}
/* Read MSG_DONE for late-delete phase & prior messages. */
while (msgdone_cnt == 3)
wait_for_receiver();
}
if ((need_retouch_dir_perms || need_retouch_dir_times)
&& dir_tweaking && (!inc_recurse || delete_during == 2))
touch_up_dirs(dir_flist, -1);
if (DEBUG_GTE(GENR, 1))
rprintf(FINFO, "generate_files finished\n");
}
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