* Copyright (C) 1996 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2002-2008 Wayne Davison
+ * Copyright (C) 2002-2009 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
extern int filesfrom_fd;
extern int one_file_system;
extern int copy_dirlinks;
-extern int keep_dirlinks;
extern int preserve_uid;
extern int preserve_gid;
extern int preserve_acls;
extern int preserve_hard_links;
extern int preserve_devices;
extern int preserve_specials;
-extern int uid_ndx;
-extern int gid_ndx;
+extern int delete_during;
extern int eol_nulls;
extern int relative_paths;
extern int implied_dirs;
-extern int file_extra_cnt;
extern int ignore_perishable;
extern int non_perishable_cnt;
extern int prune_empty_dirs;
extern int protocol_version;
extern int sanitize_paths;
extern int munge_symlinks;
+extern int use_safe_inc_flist;
extern int need_unsorted_flist;
+extern int sender_symlink_iconv;
extern int unsort_ndx;
+extern uid_t our_uid;
extern struct stats stats;
extern char *filesfrom_host;
* will survive just long enough to be used by send_file_entry(). */
static dev_t tmp_rdev;
#ifdef SUPPORT_HARD_LINKS
-static int64 tmp_dev, tmp_ino;
+static int64 tmp_dev = -1, tmp_ino;
#endif
static char tmp_sum[MAX_DIGEST_LEN];
return 1;
}
-static void send_file_entry(int f, const char *fname, struct file_struct *file, int ndx, int first_ndx)
+static void send_file_entry(int f, const char *fname, struct file_struct *file,
+#ifdef SUPPORT_LINKS
+ const char *symlink_name, int symlink_len,
+#endif
+ int ndx, int first_ndx)
{
static time_t modtime;
static mode_t mode;
else
mode = file->mode;
- if ((preserve_devices && IS_DEVICE(mode))
- || (preserve_specials && IS_SPECIAL(mode))) {
+ if (preserve_devices && IS_DEVICE(mode)) {
if (protocol_version < 28) {
if (tmp_rdev == rdev)
xflags |= XMIT_SAME_RDEV_pre28;
if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
xflags |= XMIT_RDEV_MINOR_8_pre30;
}
+ } else if (preserve_specials && IS_SPECIAL(mode)) {
+ /* Special files don't need an rdev number, so just make
+ * the historical transmission of the value efficient. */
+ if (protocol_version < 28)
+ xflags |= XMIT_SAME_RDEV_pre28;
+ else {
+ rdev = MAKEDEV(major(rdev), 0);
+ xflags |= XMIT_SAME_RDEV_MAJOR;
+ if (protocol_version < 30)
+ xflags |= XMIT_RDEV_MINOR_8_pre30;
+ }
} else if (protocol_version < 28)
rdev = MAKEDEV(0, 0);
if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
modtime = file->modtime;
#ifdef SUPPORT_HARD_LINKS
- if (tmp_dev != 0) {
+ if (tmp_dev != -1) {
if (protocol_version >= 30) {
struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
first_hlink_ndx = (int32)(long)np->data - 1;
}
#ifdef SUPPORT_LINKS
- if (preserve_links && S_ISLNK(mode)) {
- const char *sl = F_SYMLINK(file);
- int len = strlen(sl);
- write_varint30(f, len);
- write_buf(f, sl, len);
+ if (symlink_len) {
+ write_varint30(f, symlink_len);
+ write_buf(f, symlink_name, symlink_len);
}
#endif
#ifdef SUPPORT_HARD_LINKS
- if (tmp_dev != 0 && protocol_version < 30) {
+ if (tmp_dev != -1 && protocol_version < 30) {
+ /* Older protocols expect the dev number to be transmitted
+ * 1-incremented so that it is never zero. */
if (protocol_version < 26) {
/* 32-bit dev_t and ino_t */
- write_int(f, (int32)dev);
+ write_int(f, (int32)(dev+1));
write_int(f, (int32)tmp_ino);
} else {
/* 64-bit dev_t and ino_t */
if (!(xflags & XMIT_SAME_DEV_pre30))
- write_longint(f, dev);
+ write_longint(f, dev+1);
write_longint(f, tmp_ino);
}
}
if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
io_error |= IOERR_GENERAL;
- rprintf(FERROR_XFER,
+ rprintf(FERROR_UTF8,
"[%s] cannot convert filename: %s (%s)\n",
who_am_i(), lastname, strerror(errno));
outbuf.len = 0;
}
- outbuf.buf[outbuf.len] = '\0';
+ thisname[outbuf.len] = '\0';
}
#endif
uid = F_OWNER(first);
if (preserve_gid)
gid = F_GROUP(first);
- if ((preserve_devices && IS_DEVICE(mode))
- || (preserve_specials && IS_SPECIAL(mode))) {
+ if (preserve_devices && IS_DEVICE(mode)) {
uint32 *devp = F_RDEV_P(first);
rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
rdev_minor = read_int(f);
rdev = MAKEDEV(rdev_major, rdev_minor);
}
- extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
+ if (IS_DEVICE(mode))
+ extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
file_length = 0;
} else if (protocol_version < 28)
rdev = MAKEDEV(0, 0);
linkname_len - 1);
overflow_exit("recv_file_entry");
}
+#ifdef ICONV_OPTION
+ /* We don't know how much extra room we need to convert
+ * the as-yet-unread symlink data, so let's hope that a
+ * double-size buffer is plenty. */
+ if (sender_symlink_iconv)
+ linkname_len *= 2;
+#endif
if (munge_symlinks)
linkname_len += SYMLINK_PREFIX_LEN;
}
}
}
- if ((preserve_devices && IS_DEVICE(mode))
- || (preserve_specials && IS_SPECIAL(mode))) {
+ if (preserve_devices && IS_DEVICE(mode)) {
uint32 *devp = F_RDEV_P(file);
DEV_MAJOR(devp) = major(rdev);
DEV_MINOR(devp) = minor(rdev);
if (first_hlink_ndx >= flist->ndx_start) {
struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
memcpy(bp, F_SYMLINK(first), linkname_len);
- } else if (munge_symlinks) {
- strlcpy(bp, SYMLINK_PREFIX, linkname_len);
- bp += SYMLINK_PREFIX_LEN;
- linkname_len -= SYMLINK_PREFIX_LEN;
- read_sbuf(f, bp, linkname_len - 1);
} else {
- read_sbuf(f, bp, linkname_len - 1);
- if (sanitize_paths)
+ if (munge_symlinks) {
+ strlcpy(bp, SYMLINK_PREFIX, linkname_len);
+ bp += SYMLINK_PREFIX_LEN;
+ linkname_len -= SYMLINK_PREFIX_LEN;
+ }
+#ifdef ICONV_OPTION
+ if (sender_symlink_iconv) {
+ xbuf outbuf, inbuf;
+
+ alloc_len = linkname_len;
+ linkname_len /= 2;
+
+ /* Read the symlink data into the end of our double-sized
+ * buffer and then convert it into the right spot. */
+ INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
+ linkname_len - 1, (size_t)-1);
+ read_sbuf(f, inbuf.buf, inbuf.len);
+ INIT_XBUF(outbuf, bp, 0, alloc_len);
+
+ if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
+ io_error |= IOERR_GENERAL;
+ rprintf(FERROR_XFER,
+ "[%s] cannot convert symlink data for: %s (%s)\n",
+ who_am_i(), full_fname(thisname), strerror(errno));
+ bp = (char*)file->basename;
+ *bp++ = '\0';
+ outbuf.len = 0;
+ }
+ bp[outbuf.len] = '\0';
+ } else
+#endif
+ read_sbuf(f, bp, linkname_len - 1);
+ if (sanitize_paths && !munge_symlinks && *bp)
sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
}
}
}
} else {
io_error |= IOERR_GENERAL;
- rsyserr(FERROR_XFER, save_errno, "readlink %s failed",
+ rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
full_fname(thisname));
}
return NULL;
if (protocol_version >= 28
? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
: S_ISREG(st.st_mode)) {
- tmp_dev = (int64)st.st_dev + 1;
+ tmp_dev = (int64)st.st_dev;
tmp_ino = (int64)st.st_ino;
} else
- tmp_dev = 0;
+ tmp_dev = -1;
}
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
- if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
+ if (IS_DEVICE(st.st_mode)) {
tmp_rdev = st.st_rdev;
st.st_size = 0;
- }
+ } else if (IS_SPECIAL(st.st_mode))
+ st.st_size = 0;
#endif
file->flags = flags;
}
#endif
file->mode = st.st_mode;
- if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
+ if (preserve_uid)
F_OWNER(file) = st.st_uid;
- if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
+ if (preserve_gid)
F_GROUP(file) = st.st_gid;
+ if (am_generator && st.st_uid == our_uid)
+ file->flags |= FLAG_OWNED_BY_US;
if (basename != thisname)
file->dirname = lastdir;
else if (!pool)
F_DEPTH(file) = extra_len / EXTRA_LEN;
- /* This code is only used by the receiver when it is building
- * a list of files for a delete pass. */
- if (keep_dirlinks && linkname_len && flist) {
- STRUCT_STAT st2;
- int save_mode = file->mode;
- file->mode = S_IFDIR; /* Find a directory with our name. */
- if (flist_find(dir_flist, file) >= 0
- && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
- file->modtime = st2.st_mtime;
- file->len32 = 0;
- file->mode = st2.st_mode;
- if (uid_ndx)
- F_OWNER(file) = st2.st_uid;
- if (gid_ndx)
- F_GROUP(file) = st2.st_gid;
- } else
- file->mode = save_mode;
- }
-
if (basename_len == 0+1) {
if (!pool)
unmake_file(file);
if (f >= 0) {
char fbuf[MAXPATHLEN];
+#ifdef SUPPORT_LINKS
+ const char *symlink_name;
+ int symlink_len;
+#ifdef ICONV_OPTION
+ char symlink_buf[MAXPATHLEN];
+#endif
+#endif
#if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
stat_x sx;
#endif
+#ifdef SUPPORT_LINKS
+ if (preserve_links && S_ISLNK(file->mode)) {
+ symlink_name = F_SYMLINK(file);
+ symlink_len = strlen(symlink_name);
+ if (symlink_len == 0) {
+ io_error |= IOERR_GENERAL;
+ f_name(file, fbuf);
+ rprintf(FERROR_XFER,
+ "skipping symlink with 0-length value: %s\n",
+ full_fname(fbuf));
+ return NULL;
+ }
+ } else {
+ symlink_name = NULL;
+ symlink_len = 0;
+ }
+#endif
+
#ifdef ICONV_OPTION
if (ic_send != (iconv_t)-1) {
xbuf outbuf, inbuf;
if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
goto convert_error;
outbuf.size += 2;
- outbuf.buf[outbuf.len++] = '/';
+ fbuf[outbuf.len++] = '/';
}
INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
who_am_i(), f_name(file, fbuf), strerror(errno));
return NULL;
}
- outbuf.buf[outbuf.len] = '\0';
+ fbuf[outbuf.len] = '\0';
+
+#ifdef SUPPORT_LINKS
+ if (symlink_len && sender_symlink_iconv) {
+ INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
+ INIT_CONST_XBUF(outbuf, symlink_buf);
+ if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
+ io_error |= IOERR_GENERAL;
+ f_name(file, fbuf);
+ rprintf(FERROR_XFER,
+ "[%s] cannot convert symlink data for: %s (%s)\n",
+ who_am_i(), full_fname(fbuf), strerror(errno));
+ return NULL;
+ }
+ symlink_buf[outbuf.len] = '\0';
+
+ symlink_name = symlink_buf;
+ symlink_len = outbuf.len;
+ }
+#endif
} else
#endif
f_name(file, fbuf);
#endif
#ifdef SUPPORT_XATTRS
if (preserve_xattrs) {
+ sx.st.st_mode = file->mode;
sx.xattr = NULL;
if (get_xattr(fname, &sx) < 0) {
io_error |= IOERR_GENERAL;
}
#endif
- send_file_entry(f, fbuf, file, flist->used, flist->ndx_start);
+ send_file_entry(f, fbuf, file,
+#ifdef SUPPORT_LINKS
+ symlink_name, symlink_len,
+#endif
+ flist->used, flist->ndx_start);
#ifdef SUPPORT_ACLS
if (preserve_acls && !S_ISLNK(file->mode)) {
unsigned int len = strlen(fbuf);
if (len > 1 && fbuf[len-1] == '/')
fbuf[--len] = '\0';
- if (len >= MAXPATHLEN - 1) {
- io_error |= IOERR_GENERAL;
- rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
- full_fname(fbuf));
- return;
- }
save_filters = push_local_filters(fbuf, len);
send_directory(f, flist, fbuf, len, flags);
pop_local_filters(save_filters);
DIR_NEXT_SIBLING(dp) = -1;
}
+static void interpret_stat_error(const char *fname, int is_dir)
+{
+ if (errno == ENOENT) {
+ io_error |= IOERR_VANISHED;
+ rprintf(FWARNING, "%s has vanished: %s\n",
+ is_dir ? "directory" : "file", full_fname(fname));
+ } else {
+ io_error |= IOERR_GENERAL;
+ rsyserr(FERROR_XFER, errno, "link_stat %s failed",
+ full_fname(fname));
+ }
+}
+
/* This function is normally called by the sender, but the receiving side also
* calls it from get_dirlist() with f set to -1 so that we just construct the
* file list in memory without sending it over the wire. Also, get_dirlist()
assert(flist != NULL);
if (!(d = opendir(fbuf))) {
+ if (errno == ENOENT) {
+ if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
+ interpret_stat_error(fbuf, True);
+ return;
+ }
io_error |= IOERR_GENERAL;
rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
return;
}
p = fbuf + len;
- if (len != 1 || *fbuf != '/')
+ if (len == 1 && *fbuf == '/')
+ remainder = MAXPATHLEN - 1;
+ else if (len < MAXPATHLEN-1) {
*p++ = '/';
- *p = '\0';
- remainder = MAXPATHLEN - (p - fbuf);
+ *p = '\0';
+ remainder = MAXPATHLEN - (len + 1);
+ } else
+ remainder = 0;
for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
char *dname = d_name(di);
if (dname[0] == '.' && (dname[1] == '\0'
|| (dname[1] == '.' && dname[2] == '\0')))
continue;
- if (strlcpy(p, dname, remainder) >= remainder) {
+ unsigned name_len = strlcpy(p, dname, remainder);
+ if (name_len >= remainder) {
+ char save = fbuf[len];
+ fbuf[len] = '\0';
io_error |= IOERR_GENERAL;
rprintf(FERROR_XFER,
- "cannot send long-named file %s\n",
- full_fname(fbuf));
+ "filename overflows max-path len by %u: %s/%s\n",
+ name_len - remainder + 1, fbuf, dname);
+ fbuf[len] = save;
continue;
}
if (dname[0] == '\0') {
filter_list = save_filter_list;
}
+static NORETURN void fatal_unsafe_io_error(void)
+{
+ /* This (sadly) can only happen when pushing data because
+ * the sender does not know about what kind of delete
+ * is in effect on the receiving side when pulling. */
+ rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
+ exit_cleanup(RERR_UNSUPPORTED);
+}
+
static void send1extra(int f, struct file_struct *file, struct file_list *flist)
{
char fbuf[MAXPATHLEN];
if (one_file_system) {
STRUCT_STAT st;
if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
- io_error |= IOERR_GENERAL;
- rsyserr(FERROR_XFER, errno, "link_stat %s failed",
- full_fname(fbuf));
+ interpret_stat_error(fbuf, True);
return;
}
filesystem_dev = st.st_dev;
if (name_type != NORMAL_NAME) {
STRUCT_STAT st;
if (link_stat(fbuf, &st, 1) != 0) {
- io_error |= IOERR_GENERAL;
- rsyserr(FERROR_XFER, errno, "link_stat %s failed",
- full_fname(fbuf));
+ interpret_stat_error(fbuf, True);
continue;
}
send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
dp = F_DIR_NODE_P(file);
}
- write_byte(f, 0);
+ if (io_error == save_io_error || ignore_errors)
+ write_byte(f, 0);
+ else if (use_safe_inc_flist) {
+ write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
+ write_varint(f, io_error);
+ } else {
+ if (delete_during)
+ fatal_unsafe_io_error();
+ write_byte(f, 0);
+ }
if (need_unsorted_flist) {
if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
start_write = stats.total_written;
gettimeofday(&start_tv, NULL);
- if (!orig_dir)
- orig_dir = strdup(curr_dir);
-
if (relative_paths && protocol_version >= 30)
implied_dirs = 1; /* We send flagged implied dirs */
use_ff_fd = 1;
}
+ if (!orig_dir)
+ orig_dir = strdup(curr_dir);
+
while (1) {
char fbuf[MAXPATHLEN], *fn, name_type;
stats.flist_buildtime = 1;
start_tv = end_tv;
- write_byte(f, 0); /* Indicate end of file list */
+ /* Indicate end of file list */
+ if (io_error == 0 || ignore_errors)
+ write_byte(f, 0);
+ else if (use_safe_inc_flist) {
+ write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
+ write_varint(f, io_error);
+ } else {
+ if (delete_during && inc_recurse)
+ fatal_unsafe_io_error();
+ write_byte(f, 0);
+ }
#ifdef SUPPORT_HARD_LINKS
if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
if (numeric_ids <= 0 && !inc_recurse)
send_id_list(f);
+ set_msg_fd_in(-1);
+
/* send the io_error flag */
if (protocol_version < 30)
write_int(f, ignore_errors ? 0 : io_error);
- else if (io_error && !ignore_errors)
+ else if (!use_safe_inc_flist && io_error && !ignore_errors)
send_msg_int(MSG_IO_ERROR, io_error);
if (disable_buffering)
struct file_list *flist;
int dstart, flags;
int64 start_read;
+ int save_verbose = verbose;
if (!first_flist)
rprintf(FLOG, "receiving file list\n");
dstart = 0;
}
+ if (am_server && verbose > 2)
+ verbose = 2;
while ((flags = read_byte(f)) != 0) {
struct file_struct *file;
- flist_expand(flist, 1);
-
if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
flags |= read_byte(f) << 8;
+
+ if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
+ int err;
+ if (!use_safe_inc_flist) {
+ rprintf(FERROR, "Invalid flist flag: %x\n", flags);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ err = read_varint(f);
+ if (!ignore_errors)
+ io_error |= err;
+ break;
+ }
+
+ flist_expand(flist, 1);
file = recv_file_entry(flist, flags, f);
if (inc_recurse && S_ISDIR(file->mode)) {
maybe_emit_filelist_progress(flist->used);
if (verbose > 2) {
- rprintf(FINFO, "recv_file_name(%s)\n",
- f_name(file, NULL));
+ char *name = f_name(file, NULL);
+ rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
}
}
file_total += flist->used;
+ verbose = save_verbose;
if (verbose > 2)
rprintf(FINFO, "received %d names\n", flist->used);
return -1;
}
+/* Search for an identically-named item in the file list. Differs from
+ * flist_find in that an item that agrees with "f" in directory-ness is
+ * preferred but one that does not is still found. */
+int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
+{
+ mode_t save_mode;
+ int ndx;
+
+ /* First look for an item that agrees in directory-ness. */
+ ndx = flist_find(flist, f);
+ if (ndx >= 0)
+ return ndx;
+
+ /* Temporarily flip f->mode to look for an item of opposite
+ * directory-ness. */
+ save_mode = f->mode;
+ f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
+ ndx = flist_find(flist, f);
+ f->mode = save_mode;
+ return ndx;
+}
+
/*
* Free up any resources a file_struct has allocated
* and clear the file.
* of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
* buffer (the functions we call will append names onto the end, but the old
* dir value will be restored on exit). */
-struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
+struct file_list *get_dirlist(char *dirname, int dlen, int flags)
{
struct file_list *dirlist;
char dirbuf[MAXPATHLEN];
int save_recurse = recurse;
int save_xfer_dirs = xfer_dirs;
int save_prune_empty_dirs = prune_empty_dirs;
+ int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
if (dlen < 0) {
dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
recurse = 0;
xfer_dirs = 1;
- send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
+ send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
xfer_dirs = save_xfer_dirs;
recurse = save_recurse;
if (do_progress)