X-Git-Url: https://ruderich.org/simon/gitweb/?p=safcm%2Fsafcm.git;a=blobdiff_plain;f=cmd%2Fsafcm-remote%2Fsync%2Ffiles.go;h=e0a2221009deda9824aa38419fec6ffc1decc0f0;hp=3e3c7ec18357e8a01e21e22906e6a5e79cb8257f;hb=6a40d84afc959f404f243b1c00ab95dc9dd9c721;hpb=ddd21f01f764a4ff61204d8e9d0ef8421ebf685c

diff --git a/cmd/safcm-remote/sync/files.go b/cmd/safcm-remote/sync/files.go
index 3e3c7ec..e0a2221 100644
--- a/cmd/safcm-remote/sync/files.go
+++ b/cmd/safcm-remote/sync/files.go
@@ -15,6 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+// +build !windows
+
 package sync
 
 import (
@@ -113,7 +115,7 @@ reopen:
 	oldFh, err := OpenFileNoFollow(file.Path)
 	if err != nil {
 		err := err.(*fs.PathError)
-		if err.Err == syscall.ELOOP {
+		if err.Err == syscall.ELOOP || err.Err == syscall.EMLINK {
 			// Check if ELOOP was caused not by O_NOFOLLOW but by
 			// too many nested symlinks before the final path
 			// component.
@@ -149,6 +151,15 @@ reopen:
 	if !change.Created {
 		// Compare permissions
 		change.Old.Mode = oldStat.Mode()
+		if change.Old.Mode.Type() == fs.ModeSymlink {
+			// Some BSD systems permit changing permissions of
+			// symlinks but ignore them on traversal. To keep it
+			// simple we don't support that and always use 0777
+			// for symlink permissions (the value on GNU/Linux).
+			//
+			// TODO: Add proper support for symlinks on BSD
+			change.Old.Mode |= 0777
+		}
 		if change.Old.Mode != file.Mode {
 			if change.Old.Mode.Type() != file.Mode.Type() {
 				changeType = true
@@ -258,7 +269,7 @@ reopen:
 		}
 	}
 
-	// Directory: create new directory (also type change to directory)
+	// Directory: create new directory, also type change to directory
 	if file.Mode.IsDir() && (change.Created || changeType) {
 		debugf("creating directory")
 		err := os.Mkdir(file.Path, 0700)
@@ -364,7 +375,7 @@ reopen:
 			os.Remove(tmpPath)
 			return err
 		}
-		// Permissions are irrelevant for symlinks
+		// Permissions are irrelevant for symlinks (on most systems)
 
 	default:
 		panic(fmt.Sprintf("invalid file type %s", file.Mode))
@@ -443,13 +454,16 @@ func diffData(oldData []byte, newData []byte) (string, error) {
 	oldBin := !strings.HasPrefix(http.DetectContentType(oldData), "text/")
 	newBin := !strings.HasPrefix(http.DetectContentType(newData), "text/")
 	if oldBin && newBin {
-		return "Binary files differ, cannot show diff", nil
+		return fmt.Sprintf("Binary files differ (%d -> %d bytes), "+
+			"cannot show diff", len(oldData), len(newData)), nil
 	}
 	if oldBin {
-		oldData = []byte("<binary content>\n")
+		oldData = []byte(fmt.Sprintf("<binary content, %d bytes>\n",
+			len(oldData)))
 	}
 	if newBin {
-		newData = []byte("<binary content>\n")
+		newData = []byte(fmt.Sprintf("<binary content, %d bytes>\n",
+			len(newData)))
 	}
 
 	// TODO: difflib shows empty context lines at the end of the file