diff --git a/src/cache.c b/src/cache.c
index 7e73db5..fc6d674 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -1090,7 +1090,7 @@ dav_open(int *fd, dav_node *node, int flags, pid_t pid, pid_t pgid, uid_t uid,
         if (create_dir_cache_file(node) != 0)
             return EIO;
         node->atime = time(NULL);
-        return open_file(fd, node, O_RDWR, pid, pgid, uid);
+        return open_file(fd, node, O_RDONLY, pid, pgid, uid);
     }
 
     int ret = 0;
diff --git a/src/dav_coda.c b/src/dav_coda.c
index 38fcb51..36d02c3 100644
--- a/src/dav_coda.c
+++ b/src/dav_coda.c
@@ -219,7 +219,7 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
         case CODA_OPEN:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_OPEN:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_CLOSE:
@@ -229,7 +229,7 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
         case CODA_IOCTL:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_IOCTL:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_GETATTR:
@@ -261,7 +261,7 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
         case CODA_LINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_LINK:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_RENAME: {
@@ -296,13 +296,13 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
         case CODA_SYMLINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_SYMLINK:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_READLINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_READLINK:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_FSYNC: {
@@ -318,14 +318,14 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
         case CODA_VGET:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "CODA_VGET:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_OPEN_BY_PATH:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG),
                        "CODA_OPEN_BY_PATH:");
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         case CODA_STATFS:
@@ -350,7 +350,7 @@ dav_coda_loop(int device, size_t bufsize, time_t idle_time,
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG),
                        "UNKNOWN CODA CALL %u", ih->opcode);
-            oh->result = ENOTSUP;
+            oh->result = ENOSYS;
             len = sizeof(struct coda_out_hdr);
             break;
         }
diff --git a/src/dav_fuse.c b/src/dav_fuse.c
index 4ffe5c6..4295581 100644
--- a/src/dav_fuse.c
+++ b/src/dav_fuse.c
@@ -235,13 +235,13 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
         case FUSE_READLINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_READLINK:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_SYMLINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_SYMLINK:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_MKNOD:
@@ -284,7 +284,7 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
         case FUSE_LINK:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_LINK:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_OPEN:
@@ -317,7 +317,7 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
         case FUSE_SETXATTR:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_GETXATTR:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_GETXATTR:
@@ -329,7 +329,7 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
         case FUSE_REMOVEXATTR:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_REMOVEXATTR:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_FLUSH:
@@ -354,7 +354,7 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
         case FUSE_FSYNCDIR:
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG), "FUSE_FSYNCDIR:");
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         case FUSE_ACCESS:
@@ -367,7 +367,7 @@ dav_fuse_loop(int device, size_t bufsize, time_t idle_time,
             if (debug)
                 syslog(LOG_MAKEPRI(LOG_DAEMON, LOG_DEBUG),
                        "UNKNOWN FUSE CALL %i", ih->opcode);
-            oh->error = -ENOTSUP;
+            oh->error = -ENOSYS;
             oh->len = sizeof(struct fuse_out_header);
             break;
         }