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Subject: [patch] #! doubles first character of argument
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From: Kalle Olavi Niemitalo <[EMAIL PROTECTED]>
Date: 17 Apr 2000 17:56:25 +0300
Message-ID: <[EMAIL PROTECTED]>
Lines: 48
Package: hurd
Version: CVS 2000-04-16
Severity: important
If the #! line of a script contains an argument for the
interpreter, the argument gets its first character doubled. This
prevents installation of packages which use #!/bin/sh -e in their
maintainer scripts.
kalle@PC486:/tmp$ ls -l abc
-rwxrwxr-x 1 kalle root 16 Apr 17 17:16 abc
kalle@PC486:/tmp$ cat abc
#!/bin/echo def
kalle@PC486:/tmp$ ./abc
ddef ./abc
Here's the fix. INTERP_LEN will still include the null because P
points to the character after the null.
--- hurd/exec/hashexec.c.orig Mon Mar 20 08:57:44 2000
+++ hurd/exec/hashexec.c Mon Apr 17 17:13:10 2000
@@ -178,7 +178,7 @@
arg = p + strspn (p, " \t");
arg_len = interp_len - 1 - (arg - interp_buf); /* without null here */
- interp_len = p + 1 - interp; /* This one includes the null. */
+ interp_len = p - interp; /* This one includes the null. */
if (arg_len == 0)
arg = NULL;
After installing the patched version and rebooting:
kalle@PC486:/tmp$ ls -l abc
-rwxrwxr-x 1 kalle root 16 Apr 17 17:24 abc
kalle@PC486:/tmp$ cat abc
#!/bin/echo def
kalle@PC486:/tmp$ ./abc
def ./abc
When I noticed the problem, I initially tried attaching gdb to
the exec server and setting breakpoints. But when I told gdb to
continue, it said it was unable to wait for the process and soon
after that the exec server seemed to crash -- or perhaps it
stopped at the breakpoint but didn't tell gdb.
Is it possible to debug the primary exec server with gdb?
Or is it possible to run another exec server and debug that?
---------------------------------------
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Date: Thu, 20 Jul 2000 23:56:37 +0200
From: Marcus Brinkmann <[EMAIL PROTECTED]>
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