X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/7b6fa00ff8abf063dae4a974fc824d430d228d14..ff2e2ccfc13d8c5a1066c09229e93d4b44b64dbf:/rsync.c

diff --git a/rsync.c b/rsync.c
index 9964c67e..6d1ee8f9 100644
--- a/rsync.c
+++ b/rsync.c
@@ -25,8 +25,11 @@
 extern int verbose;
 extern int dry_run;
 extern int daemon_log_format_has_i;
+extern int preserve_perms;
+extern int preserve_executability;
 extern int preserve_times;
 extern int omit_dir_times;
+extern int orig_umask;
 extern int am_root;
 extern int am_server;
 extern int am_sender;
@@ -49,9 +52,29 @@ void free_sums(struct sum_struct *s)
 	free(s);
 }
 
+/* This is only called when we aren't preserving permissions.  Figure out what
+ * the permissions should be and return them merged back into the mode. */
+mode_t dest_mode(mode_t flist_mode, mode_t dest_mode, int exists)
+{
+	/* If the file already exists, we'll return the local permissions,
+	 * possibly tweaked by the --executability option. */
+	if (exists) {
+		if (preserve_executability && S_ISREG(flist_mode)) {
+			/* If the source file is executable, grant execute
+			 * rights to everyone who can read, but ONLY if the
+			 * file isn't already executable. */
+			if (!(flist_mode & 0111))
+				dest_mode &= ~0111;
+			else if (!(dest_mode & 0111))
+				dest_mode |= (dest_mode & 0444) >> 2;
+		}
+	} else
+		dest_mode = flist_mode & ACCESSPERMS & ~orig_umask;
+	return (flist_mode & ~CHMOD_BITS) | (dest_mode & CHMOD_BITS);
+}
 
-int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
-	      int flags)
+int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st,
+		   int flags)
 {
 	int updated = 0;
 	STRUCT_STAT st2;
@@ -66,11 +89,17 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 			return 0;
 		}
 		st = &st2;
+		if (!preserve_perms && S_ISDIR(file->mode)
+		 && st->st_mode & S_ISGID) {
+			/* We just created this directory and its setgid
+			 * bit is on, so make sure it stays on. */
+			file->mode |= S_ISGID;
+		}
 	}
 
 	if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
-		flags |= PERMS_SKIP_MTIME;
-	if (!(flags & PERMS_SKIP_MTIME)
+		flags |= ATTRS_SKIP_MTIME;
+	if (!(flags & ATTRS_SKIP_MTIME)
 	    && cmp_modtime(st->st_mtime, file->modtime) != 0) {
 		int ret = set_modtime(fname, file->modtime, st->st_mode);
 		if (ret < 0) {
@@ -139,7 +168,7 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 	}
 #endif
 
-	if (verbose > 1 && flags & PERMS_REPORT) {
+	if (verbose > 1 && flags & ATTRS_REPORT) {
 		enum logcode code = daemon_log_format_has_i || dry_run
 				  ? FCLIENT : FINFO;
 		if (updated)
@@ -150,8 +179,7 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 	return updated;
 }
 
-
-void sig_int(void)
+RETSIGTYPE sig_int(UNUSED(int val))
 {
 	/* KLUGE: if the user hits Ctrl-C while ssh is prompting
 	 * for a password, then our cleanup's sending of a SIGUSR1
@@ -165,30 +193,35 @@ void sig_int(void)
 	exit_cleanup(RERR_SIGNAL);
 }
 
-
-/* finish off a file transfer, renaming the file and setting the permissions
-   and ownership */
-void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
-		     int ok_to_set_time, int overwriting_basis)
+/* Finish off a file transfer: renaming the file and setting the file's
+ * attributes (e.g. permissions, ownership, etc.).  If partialptr is not
+ * NULL and the robust_rename() call is forced to copy the temp file, we
+ * stage the file into the partial-dir and then rename it into place. */
+void finish_transfer(char *fname, char *fnametmp, char *partialptr,
+		     struct file_struct *file, int ok_to_set_time,
+		     int overwriting_basis)
 {
 	int ret;
 
 	if (inplace) {
 		if (verbose > 2)
 			rprintf(FINFO, "finishing %s\n", fname);
-		goto do_set_perms;
+		fnametmp = fname;
+		goto do_set_file_attrs;
 	}
 
 	if (make_backups && overwriting_basis && !make_backup(fname))
 		return;
 
 	/* Change permissions before putting the file into place. */
-	set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
+	set_file_attrs(fnametmp, file, NULL,
+		       ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
 
 	/* move tmp file over real file */
 	if (verbose > 2)
 		rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
-	ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
+	ret = robust_rename(fnametmp, fname, partialptr,
+			    file->mode & INITACCESSPERMS);
 	if (ret < 0) {
 		rsyserr(FERROR, errno, "%s %s -> \"%s\"",
 			ret == -2 ? "copy" : "rename",
@@ -200,8 +233,21 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
 		/* The file was moved into place (not copied), so it's done. */
 		return;
 	}
-    do_set_perms:
-	set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
+	/* The file was copied, so tweak the perms of the copied file.  If it
+	 * was copied to partialptr, move it into its final destination. */
+	fnametmp = partialptr ? partialptr : fname;
+
+  do_set_file_attrs:
+	set_file_attrs(fnametmp, file, NULL,
+		       ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
+
+	if (partialptr) {
+		if (do_rename(fnametmp, fname) < 0) {
+			rsyserr(FERROR, errno, "rename %s -> \"%s\"",
+				full_fname(fnametmp), fname);
+		} else
+			handle_partial_dir(partialptr, PDIR_DELETE);
+	}
 }
 
 const char *who_am_i(void)