Bug#44706: marked as done (apt: Dpkg-Prexec broken)
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Darren Benham
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From: Joey Hess <joey@varesearch.com>
Subject: apt: Dpkg-Prexec broken
To: submit@bugs.debian.org
X-Mailer: bug 3.2.2
Message-Id: <[🔎] E11PAME-0008Gw-00@gumdrop.su.varesearch.com>
Date: Thu, 09 Sep 1999 12:59:46 -0700
Package: apt
Version: 0.3.12
Severity: normal
root@gumdrop:/home/joey>apt-get install acct
Reading Package Lists... Done
Building Dependency Tree... Done
The following NEW packages will be installed:
acct
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
1 packages not fully installed or removed.
Need to get 0B/89.2kB of archives. After unpacking 197kB will be used.
/bin/sh: /bin/sh: cannot execute binary file
E: Write error - write (32 Broken pipe)
root@gumdrop:/home/joey>cat /etc/apt/apt.conf
// Pre-configure all packages before they are installed.
DPkg::Pre-Install-Pkgs {"/tmp/foo";};
joey@gumdrop:~>cat /tmp/foo
#!/usr/bin/perl
while (<>) {
print STDERR "got: $_\n";
}
Strace shows /bin/sh trying to open an ELF executable. Here's a patch, you
aren't supposed to call execv with a dupliacted first argument, like you do
with some exec's.
--- dpkgpm.cc~ Fri Sep 3 09:03:48 1999
+++ dpkgpm.cc Thu Sep 9 12:37:00 1999
@@ -178,10 +178,9 @@
const char *Args[5];
Args[0] = "/bin/sh";
- Args[1] = "/bin/sh";
- Args[2] = "-c";
- Args[3] = Opts->Value.c_str();
- Args[4] = 0;
+ Args[1] = "-c";
+ Args[2] = Opts->Value.c_str();
+ Args[3] = 0;
execv(Args[0],(char **)Args);
_exit(100);
The next problem is that your the for loop in the same function as the above
code doesn't increment, so it loops endlessly, feeding the same package name
in over and over. Line 199 of dpkgmm.cc needs to be:
for (vector<Item>::iterator I = List.begin(); I != List.end(); I++)
Looks like the new feature works ok with these two patches.
-- System Information
Debian Release: potato
Kernel Version: Linux gumdrop 2.2.10 #1 SMP Thu Jun 24 12:25:56 PDT 1999 i686 unknown
Versions of the packages apt depends on:
ii libc6 2.1.2-1 GNU C Library: Shared libraries and timezone
ii libstdc++2.10 2.95.1-2 The GNU stdc++ library
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Date: Fri, 24 Sep 1999 19:52:10 -0600 (MDT)
From: Jason Gunthorpe <jgg@ualberta.ca>
X-Sender: jgg@localhost
To: 44996-done@bugs.debian.org, 45392-done@bugs.debian.org,
45389-done@bugs.debian.org, 44706-done@bugs.debian.org,
45050-done@bugs.debian.org, 45176-done@bugs.debian.org
Subject: Closed
Message-ID: <Pine.LNX.3.96.990924194530.2349J-100000@localhost>
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These bugs are all fixed in the latest 0.3.13 release.
Jason
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