DAOS-15747 test: Quote filenames when creating stack traces (#14246)

Support filenames with spaces when generating stack traces from core
files detected after running tests.

Signed-off-by: Phil Henderson <[email protected]>

src/tests/ftest/process_core_files.py

@@ -140,8 +140,8 @@ def process_core_files(self, directory, delete, test=None):
                         continue
                     if os.path.splitext(core_name)[-1] == ".bz2":
                         # Decompress the file
-                        command = ["lbzip2", "-d", "-v", os.path.join(core_dir, core_name)]
-                        run_local(self.log, " ".join(command))
+                        command = f"lbzip2 -d -v '{os.path.join(core_dir, core_name)}'"
+                        run_local(self.log, command)
                         core_name = os.path.splitext(core_name)[0]
                     exe_name = self._get_exe_name(os.path.join(core_dir, core_name))
                     self._create_stacktrace(core_dir, core_name, exe_name)
@@ -184,26 +184,16 @@ def _create_stacktrace(self, core_dir, core_name, exe_name):
         """
         host = os.path.split(core_dir)[-1].split(".")[-1]
         core_full = os.path.join(core_dir, core_name)
-        stack_trace_file = os.path.join(core_dir, f"{core_name}.stacktrace")
+        stack_trace_file = os.path.join(core_dir, f"'{core_name}.stacktrace'")
 
         self.log.debug("Generating a stacktrace from the %s core file from %s", core_full, host)
-        run_local(self.log, " ".join(['ls', '-l', core_full]))
+        run_local(self.log, f"ls -l '{core_full}'")
 
+        command = (
+            f"gdb -cd='{core_dir}' -ex 'set pagination off' -ex 'thread apply all bt full' -ex "
+            f"detach -ex quit '{exe_name}' '{core_name}'")
         try:
-            command = [
-                "gdb", f"-cd={core_dir}",
-                "-ex", "'set pagination off'",
-                "-ex", "'thread apply all bt full'",
-                "-ex", "detach",
-                "-ex", "quit",
-                exe_name, core_name
-            ]
-
-        except RunException as error:
-            raise RunException(f"Error obtaining the exe name from {core_name}") from error
-
-        try:
-            output = run_local(self.log, " ".join(command), check=False, verbose=False)
+            output = run_local(self.log, command, check=False, verbose=False)
             with open(stack_trace_file, "w", encoding="utf-8") as stack_trace:
                 stack_trace.writelines(output.stdout)
 
@@ -226,9 +216,9 @@ def _get_exe_name(self, core_file):
             str: the executable name
 
         """
-        self.log.debug("Extracting the executable name from %s", core_file)
-        command = ["gdb", "-c", core_file, "-ex", "'info proc exe'", "-ex", "quit"]
-        result = run_local(self.log, " ".join(command), verbose=False)
+        self.log.debug("Extracting the executable name from '%s'", core_file)
+        command = f"gdb -c '{core_file}' -ex 'info proc exe' -ex quit"
+        result = run_local(self.log, command, verbose=False)
         last_line = result.stdout.splitlines()[-1]
         self.log.debug("  last line:       %s", last_line)
         cmd = last_line[7:]