X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/c284f34a498a4b7c85666df867024be63a511d55..9f27cd8ca6ccbf1ab4cd8b0b66445535e2573d59:/util.c

diff --git a/util.c b/util.c
index d0d1c2b1..5129c35b 100644
--- a/util.c
+++ b/util.c
@@ -28,6 +28,7 @@
 #include "rsync.h"
 
 extern int verbose;
+extern struct exclude_list_struct server_exclude_list;
 
 int sanitize_paths = 0;
 
@@ -252,20 +253,20 @@ int copy_file(char *source, char *dest, mode_t mode)
 	ifd = do_open(source, O_RDONLY, 0);
 	if (ifd == -1) {
 		rprintf(FERROR,"open %s: %s\n",
-			source,strerror(errno));
+			full_fname(source), strerror(errno));
 		return -1;
 	}
 
 	if (robust_unlink(dest) && errno != ENOENT) {
 		rprintf(FERROR,"unlink %s: %s\n",
-			dest,strerror(errno));
+			full_fname(dest), strerror(errno));
 		return -1;
 	}
 
 	ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode);
 	if (ofd == -1) {
 		rprintf(FERROR,"open %s: %s\n",
-			dest,strerror(errno));
+			full_fname(dest), strerror(errno));
 		close(ifd);
 		return -1;
 	}
@@ -273,19 +274,27 @@ int copy_file(char *source, char *dest, mode_t mode)
 	while ((len = safe_read(ifd, buf, sizeof buf)) > 0) {
 		if (full_write(ofd, buf, len) < 0) {
 			rprintf(FERROR,"write %s: %s\n",
-				dest,strerror(errno));
+				full_fname(dest), strerror(errno));
 			close(ifd);
 			close(ofd);
 			return -1;
 		}
 	}
 
-	close(ifd);
-	close(ofd);
+	if (close(ifd) < 0) {
+		rprintf(FINFO, "close failed on %s: %s\n",
+			full_fname(source), strerror(errno));
+	}
+
+	if (close(ofd) < 0) {
+		rprintf(FERROR, "close failed on %s: %s\n",
+			full_fname(dest), strerror(errno));
+		return -1;
+	}
 
 	if (len < 0) {
 		rprintf(FERROR,"read %s: %s\n",
-			source,strerror(errno));
+			full_fname(source), strerror(errno));
 		return -1;
 	}
 
@@ -353,18 +362,33 @@ int robust_unlink(char *fname)
 #endif
 }
 
-int robust_rename(char *from, char *to)
+/* Returns 0 on success, -1 on most errors, and -2 if we got an error
+ * trying to copy the file across file systems. */
+int robust_rename(char *from, char *to, int mode)
 {
-#ifndef ETXTBSY
-	return do_rename(from, to);
-#else
-	int rc = do_rename(from, to);
-	if (rc == 0 || errno != ETXTBSY)
-		return rc;
-	if (robust_unlink(to) != 0)
-		return -1;
-	return do_rename(from, to);
+	int tries = 4;
+
+	while (tries--) {
+		if (do_rename(from, to) == 0)
+			return 0;
+
+		switch (errno) {
+#ifdef ETXTBSY
+		case ETXTBSY:
+			if (robust_unlink(to) != 0)
+				return -1;
+			break;
 #endif
+		case EXDEV:
+			if (copy_file(from, to, mode) != 0)
+				return -2;
+			do_unlink(from);
+			return 0;
+		default:
+			return -1;
+		}
+	}
+	return -1;
 }
 
 
@@ -456,12 +480,11 @@ int lock_range(int fd, int offset, int len)
 static int exclude_server_path(char *arg)
 {
 	char *s;
-	extern struct exclude_struct **server_exclude_list;
 
-	if (server_exclude_list) {
+	if (server_exclude_list.head) {
 		for (s = arg; (s = strchr(s, '/')) != NULL; ) {
 			*s = '\0';
-			if (check_exclude(server_exclude_list, arg, 1)) {
+			if (check_exclude(&server_exclude_list, arg, 1) < 0) {
 				/* We must leave arg truncated! */
 				return 1;
 			}
@@ -558,8 +581,8 @@ void strlower(char *s)
 
 /* Join strings p1 & p2 into "dest" with a guaranteed '/' between them.  (If
  * p1 ends with a '/', no extra '/' is inserted.)  Returns the length of both
- * strings + 1 (if '/' was inserted), regardless of whether the whole thing
- * fits into destsize (including the terminating '\0'). */
+ * strings + 1 (if '/' was inserted), regardless of whether the null-terminated
+ * string fits into destsize. */
 size_t pathjoin(char *dest, size_t destsize, const char *p1, const char *p2)
 {
 	size_t len = strlcpy(dest, p1, destsize);
@@ -579,9 +602,9 @@ size_t pathjoin(char *dest, size_t destsize, const char *p1, const char *p2)
 }
 
 /* Join any number of strings together, putting them in "dest".  The return
- * value is the length of all the strings, regardless of whether they fit in
- * destsize (including the terminating '\0').  Your list of string pointers
- * should end with a NULL to indicate the end of the list. */
+ * value is the length of all the strings, regardless of whether the null-
+ * terminated whole fits in destsize.  Your list of string pointers must end
+ * with a NULL to indicate the end of the list. */
 size_t stringjoin(char *dest, size_t destsize, ...)
 {
 	va_list ap;
@@ -734,7 +757,7 @@ void sanitize_path(char *p, char *reldir)
 		while (1) {
 			/* copy one component through next slash */
 			*sanp++ = *p++;
-			if (*p == '\0' || p[1] == '/') {
+			if (*p == '\0' || p[-1] == '/') {
 				while (*p == '/') {
 					/* skip multiple slashes */
 					p++;
@@ -760,6 +783,39 @@ void sanitize_path(char *p, char *reldir)
 	*sanp = '\0';
 }
 
+/* Works much like sanitize_path(), with these differences:  (1) a new buffer
+ * is allocated for the sanitized path rather than modifying it in-place; (2)
+ * a leading slash gets transformed into the rootdir value (which can be empty
+ * or NULL if you just want the slash to get dropped); (3) no "reldir" can be
+ * specified. */
+char *alloc_sanitize_path(const char *path, const char *rootdir)
+{
+	char *buf;
+	int rlen, plen = strlen(path);
+
+	if (*path == '/' && rootdir) {
+		rlen = strlen(rootdir);
+		if (rlen == 1)
+			path++;
+	} else
+		rlen = 0;
+	if (!(buf = new_array(char, rlen + plen + 1)))
+		out_of_memory("alloc_sanitize_path");
+	if (rlen)
+		memcpy(buf, rootdir, rlen);
+	memcpy(buf + rlen, path, plen + 1);
+
+	if (rlen > 1)
+		rlen++;
+	sanitize_path(buf + rlen, NULL);
+	if (rlen && buf[rlen] == '.' && buf[rlen+1] == '\0') {
+		if (rlen > 1)
+			rlen--;
+		buf[rlen] = '\0';
+	}
+
+	return buf;
+}
 
 char curr_dir[MAXPATHLEN];
 unsigned int curr_dir_len;