Improved write check on tmpfsdir in bldpkg script

bldpkg

@@ -26,8 +26,6 @@
 #    directory if tmpfs directory validation fails
 # -> Uncomment entirety of the code where compilers are to be hard-validated and improve C code
 #    in the test files and also add suitable bldpkg.conf switches for it
-# -> Remove faulty "write" check on tmpfsdir, replace it with the touch command similar to what 
-#    we are doing for testing parenttmp
 
 # Begin subshell
 (
@@ -230,7 +228,7 @@ if ! touch "$parenttmp"/.smlinuxwritetest ; then
 fi
 
 # Discard the test file
-rm -f "$parenttmp"/.smlinuxwritetest
+[ -e "$parenttmp"/.smlinuxwritetest ] && rm -f "$parenttmp"/.smlinuxwritetest
 
 # Determine if $tmpfsdir is listed inside $protecteddirectories array
 if inarray "${parenttmp}" "${protecteddirectories[@]}" ; then
@@ -294,11 +292,13 @@ fi
 # Validate the TMPFS directory. If usetmpfs is set to 1 and tmpfsdir variable is set, then check for 
 # genuineness of the TMPFS directory. If it fails, declare a variable for the build summary.
 if [ "$usetmpfs" = "1" ] && [ -n "$tmpfsdir" ]; then
-  if [ ! -d "$tmpfsdir" ] || [ ! -w "$tmpfsdir" ] \
+  if [ ! -d "$tmpfsdir" ] ||  ! touch "$tmpfsdir"/.smlinuxtmpwritetest  \
   || [ "$(findmnt -no TARGET $tmpfsdir)" != "$tmpfsdir" ] \
   || [ "$(findmnt -no FSTYPE $tmpfsdir)" != "tmpfs" ]; then
      tmpfscheckfailed=1
   fi
+  
+  [ -e "$tmpfsdir"/.smlinuxtmpwritetest ] && rm -f "$tmpfsdir"/.smlinuxtmpwritetest
 fi
   
 # Validate system swap if swapcheck is defined and set to 1
@@ -597,7 +597,7 @@ if [ "$globalsccache" = "1" ]; then
     #  exit 1
     #fi
     
-    # Useful for rust-specific builds. Rust does not listen to MAKEFLAGS
+    # Useful for rust-specific builds. 
     RUSTC_WRAPPER="$sccachebinpath"
     export RUSTC_WRAPPER