ps: display interpreted script name in comm column

When an interpreted script is being run the comm column in ps
should display the name of the script not the name of the
interpreter.

Use a fake applet pathname to indicate which argument contains
the script.

This also allows pidof to obtain the pid of a script.

1 files changed, 17 insertions, 1 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index b3a144aee..3ff2b5dc6 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -1067,6 +1067,7 @@ int busybox_main(int argc UNUSED_PARAM, char **argv)
 # if NUM_APPLETS > 0
 
 #  if ENABLE_PLATFORM_MINGW32
+static int interp = 0;
 char bb_comm[COMM_LEN];
 char bb_command_line[128];
 #  endif
@@ -1086,7 +1087,9 @@ void FAST_FUNC run_applet_no_and_exit(int applet_no, const char *name, char **ar
          */
         applet_name = name;
 #  if ENABLE_PLATFORM_MINGW32
-        safe_strncpy(bb_comm, applet_name, sizeof(bb_comm));
+        safe_strncpy(bb_comm,
+                                        interp ? bb_basename(argv[interp]) : applet_name,
+                                        sizeof(bb_comm));
 
         safe_strncpy(bb_command_line, applet_name, sizeof(bb_command_line));
         for (i=1; i < argc && argv[i] &&
@@ -1206,6 +1209,19 @@ int main(int argc UNUSED_PARAM, char **argv)
                 argv[0][0] &= 0x7f;
         }
 #endif
+#if ENABLE_PLATFORM_MINGW32
+        /* detect if we're running an interpreted script */
+        if (argv[0][1] == ':' && argv[0][2] == '/') {
+                switch (argv[0][0]) {
+                case '1':
+                        interp = 1;
+                        break;
+                case'2':
+                        interp = 2;
+                        break;
+                }
+        }
+#endif
 
 #if defined(__MINGW64_VERSION_MAJOR)
         if ( stdin ) {