X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/6902ed178ba54c8e1c410519f7ee576ddb42554c..cfeed4da95fd8c38eadab32c9d897302e73d5a91:/rsync.c

diff --git a/rsync.c b/rsync.c
index 890d6a89..78fedab6 100644
--- a/rsync.c
+++ b/rsync.c
@@ -1,17 +1,17 @@
-/* 
+/*
    Copyright (C) Andrew Tridgell 1996
    Copyright (C) Paul Mackerras 1996
-   
+
    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
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
-   
+
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-   
+
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
@@ -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;
@@ -43,8 +46,8 @@ void free_sums(struct sum_struct *s)
 
 
 /*
- * delete a file or directory. If force_delete is set then delete 
- * recursively 
+ * delete a file or directory. If force_delete is set then delete
+ * recursively
  */
 int delete_file(char *fname)
 {
@@ -67,85 +70,60 @@ int delete_file(char *fname)
 
 	if (!S_ISDIR(st.st_mode)) {
 		if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
-		rprintf(FERROR,"delete_file: unlink(%s) : %s\n", fname, strerror(errno));
+		rprintf(FERROR, "delete_file: unlink %s failed: %s\n",
+			full_fname(fname), strerror(errno));
 		return -1;
 	}
 
 	if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
-	if (!force_delete || !recurse || 
+	if (!force_delete || !recurse ||
 	    (errno != ENOTEMPTY && errno != EEXIST)) {
-		rprintf(FERROR,"delete_file: rmdir(%s) : %s\n", fname, strerror(errno));
+		rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
+			full_fname(fname), strerror(errno));
 		return -1;
 	}
 
 	/* now we do a recsursive delete on the directory ... */
 	d = opendir(fname);
 	if (!d) {
-		rprintf(FERROR,"delete_file: opendir(%s): %s\n",
-			fname,strerror(errno));
+		rprintf(FERROR, "delete_file: opendir %s failed: %s\n",
+			full_fname(fname), strerror(errno));
 		return -1;
 	}
 
-	for (di=readdir(d); di; di=readdir(d)) {
+	for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
 		char *dname = d_name(di);
-		if (strcmp(dname,".")==0 ||
-		    strcmp(dname,"..")==0)
+		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) {
 			closedir(d);
 			return -1;
 		}
-	}	
-
-	closedir(d);
-	
-	if (do_rmdir(fname) != 0) {
-		rprintf(FERROR,"delete_file: rmdir(%s) : %s\n", fname, strerror(errno));
+	}
+	if (errno) {
+		rprintf(FERROR, "delete_file: readdir %s failed: %s\n",
+			full_fname(fname), strerror(errno));
+		closedir(d);
 		return -1;
 	}
 
-	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);
-		}
-	}
+	closedir(d);
 
-	last_in = gid;
-	last_out = 0;
-	for (n = 0; n < ngroups; n++) {
-		if (gidset[n] == gid) {
-			last_out = 1;
-			break;
-		}
+	if (do_rmdir(fname) != 0) {
+		rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
+			full_fname(fname), strerror(errno));
+		return -1;
 	}
-	return last_out;
 
-#else
 	return 0;
-#endif
 }
 
 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
-	      int report)
+		int report)
 {
 	int updated = 0;
 	STRUCT_STAT st2;
@@ -155,7 +133,8 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 
 	if (!st) {
 		if (link_stat(fname,&st2) != 0) {
-			rprintf(FERROR,"stat %s : %s\n",fname,strerror(errno));
+			rprintf(FERROR, "stat %s failed: %s\n",
+				full_fname(fname), strerror(errno));
 			return 0;
 		}
 		st = &st2;
@@ -167,8 +146,8 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 		   because some filesystems can't do it */
 		if (set_modtime(fname,file->modtime) != 0 &&
 		    !S_ISDIR(st->st_mode)) {
-			rprintf(FERROR,"failed to set times on %s : %s\n",
-				fname,strerror(errno));
+			rprintf(FERROR, "failed to set times on %s: %s\n",
+				full_fname(fname), strerror(errno));
 			return 0;
 		} else {
 			updated = 1;
@@ -176,20 +155,29 @@ 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 : %s\n", fname,strerror(errno));
+			rprintf(FERROR, "%s %s failed: %s\n",
+				change_uid ? "chown" : "chgrp",
+				full_fname(fname), strerror(errno));
 			return 0;
 		}
 		/* a lchown had been done - we have to re-stat if the
@@ -203,17 +191,17 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 
 #ifdef HAVE_CHMOD
 	if (!S_ISLNK(st->st_mode)) {
-		if (st->st_mode != file->mode) {
+		if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
 			updated = 1;
-			if (do_chmod(fname,file->mode) != 0) {
-				rprintf(FERROR,"failed to set permissions on %s : %s\n",
-					fname,strerror(errno));
+			if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
+				rprintf(FERROR, "failed to set permissions on %s: %s\n",
+					full_fname(fname), strerror(errno));
 				return 0;
 			}
 		}
 	}
 #endif
-    
+
 	if (verbose > 1 && report) {
 		if (updated)
 			rprintf(FINFO,"%s\n",fname);
@@ -226,7 +214,15 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
 
 void sig_int(void)
 {
-	rprintf(FINFO,"\nrsync.c:sig_int() called.\n");
+	/* 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);
 }
 
@@ -241,20 +237,26 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
 	/* move tmp file over real file */
 	if (robust_rename(fnametmp,fname) != 0) {
 		if (errno == EXDEV) {
-			/* rename failed on cross-filesystem link.  
+			/* rename failed on cross-filesystem link.
 			   Copy the file instead. */
 			if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
-				rprintf(FERROR,"copy %s -> %s : %s\n",
-					fnametmp,fname,strerror(errno));
+				rprintf(FERROR, "copy %s -> \"%s\": %s\n",
+					full_fname(fnametmp), fname,
+					strerror(errno));
 			} else {
 				set_perms(fname,file,NULL,0);
 			}
 		} else {
-			rprintf(FERROR,"rename %s -> %s : %s\n",
-				fnametmp,fname,strerror(errno));
+			rprintf(FERROR,"rename %s -> \"%s\": %s\n",
+				full_fname(fnametmp), fname, strerror(errno));
 		}
 		do_unlink(fnametmp);
 	} else {
 		set_perms(fname,file,NULL,0);
 	}
 }
+
+const char *who_am_i(void)
+{
+    return am_sender ? "sender" : am_generator ? "generator" : "receiver";
+}