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Mail Archives: cygwin-developers/1998/09/16/14:29:35

From: corinna DOT vinschen AT cityweb DOT de (Corinna Vinschen)
Subject: Forgotten change
16 Sep 1998 14:29:35 -0700 :
Message-ID: <36002924.C74CF718.cygnus.cygwin32.developers@cityweb.de>
Mime-Version: 1.0
To: cygwin32-developers AT cygnus DOT com

I have forgotten the following patch to
fhandler_disk_file::check_execable(),
which is sure a point of discussion, but
if working with tcsh, it's easier, to
remove all .exe suffixes from the
files.
IMHO, the following patch, which checks
the suffix '.sh' and moreover the first
bytes in a file, slows down 'ls -l' only
a little bit, but gives more info.

Corinna

---------- snip ------------
*** fhandler.cc.orig   Wed Sep 16 23:02:54 1998
--- fhandler.cc Wed Sep 16 23:02:57 1998
*************** fhandler_disk_file::check_execable_p (co
*** 1277,1284 ****
--- 1277,1303 ----
    if (strcasematch (".bat", ch)
        || strcasematch (".exe", ch)
        || strcasematch (".com", ch)
+       || strcasecmp (".sh", ch + 1) == 0
        || strcasematch (".shc", ch)) /* file associate sh -c ==
ShellScript */
      return 1;
+
+ #if 1
+   /* We also can test the first bytes in the file. */
+   { HANDLE fh;
+     char buf[4];
+
+     if ((fh = CreateFileA(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
+                           0, 0)) != INVALID_HANDLE_VALUE) {
+        DWORD bytes_read;
+        ReadFile(fh, buf, 4, &bytes_read, 0);
+        CloseHandle(fh);
+        if (! memcmp(buf, "\x4d\x5a\x90\0", 4) ||
+            ! memcmp(buf, "#!", 2))
+          return 1;
+     }
+   }
+ #endif
+
    return 0;
  }

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