X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/f8949e7647748c5841babfd969ed837bed70fea6..4ecf3e067151e45dc7dead9862416722dcb4a20f:/flist.c

diff --git a/flist.c b/flist.c
index f8e809a6..0554b5d7 100644
--- a/flist.c
+++ b/flist.c
@@ -242,10 +242,10 @@ static inline int is_daemon_excluded(const char *fname, int is_dir)
 	return 0;
 }
 
-static inline int path_is_daemon_excluded(const char *path, int ignore_filename)
+static inline int path_is_daemon_excluded(char *path, int ignore_filename)
 {
 	if (daemon_filter_list.head) {
-		char *slash = (char*)path;
+		char *slash = path;
 
 		while ((slash = strchr(slash+1, '/')) != NULL) {
 			int ret;
@@ -293,7 +293,6 @@ static void send_directory(int f, struct file_list *flist,
 static const char *pathname, *orig_dir;
 static int pathname_len;
 
-
 /* Make sure flist can hold at least flist->used + extra entries. */
 static void flist_expand(struct file_list *flist, int extra)
 {
@@ -339,29 +338,51 @@ static void flist_done_allocating(struct file_list *flist)
 		flist->pool_boundary = ptr;
 }
 
-int push_pathname(const char *dir, int len)
+/* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
+ * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
+ * with dir == NULL taken to be the starting directory, and dirlen < 0
+ * indicating that strdup(dir) should be called and then the -dirlen length
+ * value checked to ensure that it is not daemon-excluded. */
+int change_pathname(struct file_struct *file, const char *dir, int dirlen)
 {
-	if (dir == pathname)
-		return 1;
+	if (dirlen < 0) {
+		char *cpy = strdup(dir);
+		if (*cpy != '/')
+			change_dir(orig_dir, CD_SKIP_CHDIR);
+		if (path_is_daemon_excluded(cpy, 0))
+			goto chdir_error;
+		dir = cpy;
+		dirlen = -dirlen;
+	} else {
+		if (file) {
+			if (pathname == F_PATHNAME(file))
+				return 1;
+			dir = F_PATHNAME(file);
+			if (dir)
+				dirlen = strlen(dir);
+		} else if (pathname == dir)
+			return 1;
+		if (dir && *dir != '/')
+			change_dir(orig_dir, CD_SKIP_CHDIR);
+	}
 
-	if (!orig_dir)
-		orig_dir = strdup(curr_dir);
+	pathname = dir;
+	pathname_len = dirlen;
 
-	if (pathname && !pop_dir(orig_dir)) {
-		rsyserr(FERROR, errno, "pop_dir %s failed",
-			full_fname(orig_dir));
-		exit_cleanup(RERR_FILESELECT);
-	}
+	if (!dir)
+		dir = orig_dir;
 
-	if (dir && (path_is_daemon_excluded(dir, 0) || !push_dir(dir, 0))) {
+	if (!change_dir(dir, CD_NORMAL)) {
+	  chdir_error:
 		io_error |= IOERR_GENERAL;
-		rsyserr(FERROR, errno, "push_dir %s failed", full_fname(dir));
+		rsyserr(FERROR, errno, "change_dir %s failed", full_fname(dir));
+		if (dir != orig_dir)
+			change_dir(orig_dir, CD_NORMAL);
+		pathname = NULL;
+		pathname_len = 0;
 		return 0;
 	}
 
-	pathname = dir;
-	pathname_len = len >= 0 ? len : dir ? (int)strlen(dir) : 0;
-
 	return 1;
 }
 
@@ -617,7 +638,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
 	int alloc_len, basename_len, linkname_len;
 	int extra_len = file_extra_cnt * EXTRA_LEN;
 	int first_hlink_ndx = -1;
-	OFF_T file_length;
+	int64 file_length;
 	const char *basename;
 	struct file_struct *file;
 	alloc_pool_t *pool;
@@ -816,8 +837,14 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
 	if (always_checksum && S_ISREG(mode))
 		extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
 
+#if SIZEOF_INT64 >= 8
 	if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
 		extra_len += EXTRA_LEN;
+#endif
+	if (file_length < 0) {
+		rprintf(FERROR, "Offset underflow: file-length is negative\n");
+		exit_cleanup(RERR_UNSUPPORTED);
+	}
 
 	if (inc_recurse && S_ISDIR(mode)) {
 		if (one_file_system) {
@@ -850,10 +877,17 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
 #endif
 	file->modtime = (time_t)modtime;
 	file->len32 = (uint32)file_length;
+#if SIZEOF_INT64 >= 8
 	if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
+#if SIZEOF_CAPITAL_OFF_T < 8
+		rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
+		exit_cleanup(RERR_UNSUPPORTED);
+#else
 		file->flags |= FLAG_LENGTH64;
 		OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
+#endif
 	}
+#endif
 	file->mode = mode;
 	if (preserve_uid)
 		F_OWNER(file) = uid;
@@ -1002,7 +1036,6 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 	const char *basename;
 	alloc_pool_t *pool;
 	STRUCT_STAT st;
-	int excl_ret;
 	char *bp;
 
 	if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
@@ -1057,7 +1090,6 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 		return NULL;
 	}
 
-	/* backup.c calls us with filter_level set to NO_FILTERS. */
 	if (filter_level == NO_FILTERS)
 		goto skip_filters;
 
@@ -1085,17 +1117,7 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 	} else
 		flags &= ~FLAG_CONTENT_DIR;
 
-	if (S_ISDIR(st.st_mode)) {
-		if (flags & FLAG_DOTDIR_NAME) {
-			/* A "." fname (or "/." fname in relative mode) is
-			 * never excluded.  No other trailing-dotdir names
-			 * are possible. */
-			excl_ret = 0;
-		} else
-			excl_ret = is_excluded(thisname, 1, filter_level);
-	} else
-		excl_ret = is_excluded(thisname, 0, filter_level);
-	if (excl_ret) {
+	if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
 		if (ignore_perishable)
 			non_perishable_cnt++;
 		return NULL;
@@ -1154,8 +1176,10 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 	linkname_len = 0;
 #endif
 
+#if SIZEOF_CAPITAL_OFF_T >= 8
 	if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
 		extra_len += EXTRA_LEN;
+#endif
 
 #if EXTRA_ROUNDING > 0
 	if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
@@ -1200,10 +1224,12 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
 	file->flags = flags;
 	file->modtime = st.st_mtime;
 	file->len32 = (uint32)st.st_size;
+#if SIZEOF_CAPITAL_OFF_T >= 8
 	if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
 		file->flags |= FLAG_LENGTH64;
 		OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
 	}
+#endif
 	file->mode = st.st_mode;
 	if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
 		F_OWNER(file) = st.st_uid;
@@ -1666,10 +1692,8 @@ static void send1extra(int f, struct file_struct *file, struct file_list *flist)
 	f_name(file, fbuf);
 	dlen = strlen(fbuf);
 
-	if (F_PATHNAME(file) != pathname) {
-		if (!push_pathname(F_PATHNAME(file), -1))
-			exit_cleanup(RERR_FILESELECT);
-	}
+	if (!change_pathname(file, NULL, 0))
+		exit_cleanup(RERR_FILESELECT);
 
 	change_local_filter_dir(fbuf, dlen, send_dir_depth);
 
@@ -1834,7 +1858,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 	int64 start_write;
 	int use_ff_fd = 0;
 	int disable_buffering;
-	int arg_flags, flags = recurse ? FLAG_CONTENT_DIR : 0;
+	int flags = recurse ? FLAG_CONTENT_DIR : 0;
 	int reading_remotely = filesfrom_host != NULL;
 	int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
 #ifdef ICONV_OPTION
@@ -1852,6 +1876,9 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 	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 */
 
@@ -1869,8 +1896,8 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 
 	disable_buffering = io_start_buffering_out(f);
 	if (filesfrom_fd >= 0) {
-		if (argv[0] && !push_dir(argv[0], 0)) {
-			rsyserr(FERROR_XFER, errno, "push_dir %s failed",
+		if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
+			rsyserr(FERROR_XFER, errno, "change_dir %s failed",
 				full_fname(argv[0]));
 			exit_cleanup(RERR_FILESELECT);
 		}
@@ -1994,11 +2021,11 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 
 		dirlen = dir ? strlen(dir) : 0;
 		if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
-			if (!push_pathname(dir ? strdup(dir) : NULL, dirlen))
+			if (!change_pathname(NULL, dir, -dirlen))
 				continue;
 			lastdir = pathname;
 			lastdir_len = pathname_len;
-		} else if (!push_pathname(lastdir, lastdir_len))
+		} else if (!change_pathname(NULL, lastdir, lastdir_len))
 			continue;
 
 		if (fn != fbuf)
@@ -2013,6 +2040,11 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 			continue;
 		}
 
+		/* A dot-dir should not be excluded! */
+		if (name_type != DOTDIR_NAME
+		 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
+			continue;
+
 		if (S_ISDIR(st.st_mode) && !xfer_dirs) {
 			rprintf(FINFO, "skipping directory %s\n", fbuf);
 			continue;
@@ -2038,13 +2070,11 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 		if (one_file_system)
 			filesystem_dev = st.st_dev;
 
-		arg_flags = name_type == DOTDIR_NAME ? FLAG_DOTDIR_NAME : 0;
-
 		if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
 			struct file_struct *file;
-			arg_flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
 			file = send_file_name(f, flist, fbuf, &st,
-					      arg_flags | flags, ALL_FILTERS);
+					      FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
+					      NO_FILTERS);
 			if (!file)
 				continue;
 			if (inc_recurse) {
@@ -2058,7 +2088,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 			} else
 				send_if_directory(f, flist, file, fbuf, len, flags);
 		} else
-			send_file_name(f, flist, fbuf, &st, arg_flags | flags, ALL_FILTERS);
+			send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
 	}
 
 	gettimeofday(&end_tv, NULL);