X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/7a2fd68b966a404a50de922053d6f0dd17151bee..9935066b704bcf2e6e48dac85cb1b4047d8f439d:/rsync.c

diff --git a/rsync.c b/rsync.c
index 36d7b8b1..78fedab6 100644
--- a/rsync.c
+++ b/rsync.c
@@ -26,6 +26,9 @@ extern int verbose;
 extern int dry_run;
 extern int preserve_times;
 extern int am_root;
+extern int am_server;
+extern int am_sender;
+extern int am_generator;
 extern int preserve_uid;
 extern int preserve_gid;
 extern int preserve_perms;
@@ -93,7 +96,7 @@ int delete_file(char *fname)
 		if (strcmp(dname,".") == 0
 		    || strcmp(dname,"..") == 0)
 			continue;
-		snprintf(buf, sizeof(buf), "%s/%s", fname, dname);
+		pathjoin(buf, sizeof buf, fname, dname);
 		if (verbose > 0)
 			rprintf(FINFO,"deleting %s\n", buf);
 		if (delete_file(buf) != 0) {
@@ -119,40 +122,6 @@ int delete_file(char *fname)
 	return 0;
 }
 
-static int is_in_group(gid_t gid)
-{
-#ifdef GETGROUPS_T
-	static gid_t last_in = (gid_t) -2, last_out;
-	static int ngroups = -2;
-	static GETGROUPS_T *gidset;
-	int n;
-
-	if (gid == last_in)
-		return last_out;
-	if (ngroups < -1) {
-		/* treat failure (-1) as if not member of any group */
-		ngroups = getgroups(0, 0);
-		if (ngroups > 0) {
-			gidset = (GETGROUPS_T *) malloc(ngroups * sizeof(GETGROUPS_T));
-			ngroups = getgroups(ngroups, gidset);
-		}
-	}
-
-	last_in = gid;
-	last_out = 0;
-	for (n = 0; n < ngroups; n++) {
-		if (gidset[n] == gid) {
-			last_out = 1;
-			break;
-		}
-	}
-	return last_out;
-
-#else
-	return 0;
-#endif
-}
-
 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 		int report)
 {
@@ -186,20 +155,28 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 	}
 
 	change_uid = am_root && preserve_uid && st->st_uid != file->uid;
-	change_gid = preserve_gid && file->gid != (gid_t) -1 && \
-				st->st_gid != file->gid;
-	if (change_gid && !am_root) {
-		/* enforce bsd-style group semantics: non-root can only
-		    change to groups that the user is a member of */
-		change_gid = is_in_group(file->gid);
-	}
+	change_gid = preserve_gid && file->gid != GID_NONE
+		&& st->st_gid != file->gid;
 	if (change_uid || change_gid) {
+		if (verbose > 2 && !dry_run) {
+			if (change_uid) {
+				rprintf(FINFO,
+				    "set uid of %s from %ld to %ld\n",
+				    fname, (long)st->st_uid, (long)file->uid);
+			}
+			if (change_gid) {
+				rprintf(FINFO,
+				    "set gid of %s from %ld to %ld\n",
+				    fname, (long)st->st_gid, (long)file->gid);
+			}
+		}
 		if (do_lchown(fname,
 			      change_uid?file->uid:st->st_uid,
 			      change_gid?file->gid:st->st_gid) != 0) {
 			/* shouldn't have attempted to change uid or gid
 			     unless have the privilege */
-			rprintf(FERROR, "chown %s failed: %s\n",
+			rprintf(FERROR, "%s %s failed: %s\n",
+				change_uid ? "chown" : "chgrp",
 				full_fname(fname), strerror(errno));
 			return 0;
 		}
@@ -237,6 +214,15 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 
 void sig_int(void)
 {
+	/* KLUGE: if the user hits Ctrl-C while ssh is prompting
+	 * for a password, then our cleanup's sending of a SIGUSR1
+	 * signal to all our children may kill ssh before it has a
+	 * chance to restore the tty settings (i.e. turn echo back
+	 * on).  By sleeping for a short time, ssh gets a bigger
+	 * chance to do the right thing.  If child processes are
+	 * not ssh waiting for a password, then this tiny delay
+	 * shouldn't hurt anything. */
+	msleep(400);
 	exit_cleanup(RERR_SIGNAL);
 }
 
@@ -269,3 +255,8 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
 		set_perms(fname,file,NULL,0);
 	}
 }
+
+const char *who_am_i(void)
+{
+    return am_sender ? "sender" : am_generator ? "generator" : "receiver";
+}