add tabfs-wrapper for all things shell scripting

2 files changed, 29 insertions, 39 deletions

diff --git a/fs/tabfs-wrapper b/fs/tabfs-wrapper
new file mode 100755
index 0000000..9116a52
--- /dev/null
+++ b/fs/tabfs-wrapper
@@ -0,0 +1,28 @@
+#! /bin/sh
+set -efu
+
+# allow wrapper to find tabfs executable
+PATH=$(dirname "$0")${PATH:+:$PATH}
+
+pgrep tabfs | grep -v ^$$\$ | xargs kill -9 2>/dev/null || :
+
+OS=$(uname -s)
+case $OS in
+  Darwin)
+    diskutil umount force mnt >/dev/null || :
+    extraArgs=
+    ;;
+  FreeBSD)
+    umount -f mnt 2>/dev/null || :
+    extraArgs=
+    ;;
+  Linux)
+    fusermount -u mnt 2>/dev/null || :
+    extraArgs=-oauto_unmount
+    ;;
+  *)
+    echo "tabfs-wrapper: error: unknown OS: $OS" >&2
+    exit 2
+esac
+
+exec tabfs -f $extraArgs -odirect_io mnt
diff --git a/fs/tabfs.c b/fs/tabfs.c
index fd1a15d..f734109 100644
--- a/fs/tabfs.c
+++ b/fs/tabfs.c
@@ -460,28 +460,6 @@ static const struct fuse_operations tabfs_oper = {
 };
 
 int main(int argc, char **argv) {
-    (void)argc;
-    if (NULL == getenv("TABFS_MOUNT_DIR")) {
-        setenv("TABFS_MOUNT_DIR", "mnt", 1);
-    }
-
-    freopen("log.txt", "a", stderr);
-    setvbuf(stderr, NULL, _IONBF, 0);
-
-    char killcmd[128];
-    sprintf(killcmd, "pgrep tabfs | grep -v %d | xargs kill -9 2>/dev/null", getpid());
-    system(killcmd);
-
-#if defined(__APPLE__)
-    system("diskutil umount force \"$TABFS_MOUNT_DIR\" >/dev/null");
-#elif defined(__FreeBSD__)
-    system("umount -f \"$TABFS_MOUNT_DIR\" 2>/dev/null");
-#else
-    system("fusermount -u \"$TABFS_MOUNT_DIR\" 2>/dev/null");
-#endif
-
-    system("mkdir -p \"$TABFS_MOUNT_DIR\"");
-
     pthread_t thread;
     int err = pthread_create(&thread, NULL, reader_main, NULL);
     if (err != 0) {
@@ -491,21 +469,5 @@ int main(int argc, char **argv) {
 
     pthread_detach(thread);
 
-    char *fuse_argv[] = {
-        argv[0],
-        "-f",
-#if !defined(__APPLE__)
-#if !defined(__FreeBSD__)
-        "-oauto_unmount",
-#endif
-#endif
-        "-odirect_io",
-        getenv("TABFS_MOUNT_DIR"),
-        NULL,
-    };
-    return fuse_main(
-        (sizeof(fuse_argv)/sizeof(*fuse_argv))-1,
-        (char **)&fuse_argv,
-        &tabfs_oper,
-        NULL);
+    return fuse_main(argc, argv, &tabfs_oper, NULL);
 }