Date: Tue, 28 Aug 2012 11:14:55 +0200 From: Stefan Esser <se@freebsd.org> To: freebsd-ports@freebsd.org Cc: ohauer@gmx.de, bapt@FreeBSD.org Subject: Re: PKG_NG: pkg deinstall fails with "argument list too long" Message-ID: <503C8C0F.2010302@freebsd.org> In-Reply-To: <20120827212331.GD64447@ithaqua.etoilebsd.net> References: <503BB682.5070108@freebsd.org> <503BD703.2020001@gmx.de> <20120827212331.GD64447@ithaqua.etoilebsd.net>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Am 27.08.2012 23:23, schrieb Baptiste Daroussin: > On Mon, Aug 27, 2012 at 10:22:27PM +0200, olli hauer wrote: Please do not hijack this thread, even if you are also reporting a problem with PKG_NG. Threads are free and nobody bothered to reply to the more urgent problem of the failed deinstallation. >> On 2012-08-27 20:03, Stefan Esser wrote: >>> PKG_NG seems to have introduced a limit on the size of ports >>> that can be deinstalled: >>> >>> # cd /usr/ports/math/lapack # make deinstall ===> >>> Deinstalling for math/lapack ===> Deinstalling >>> lapack-3.4.0_2 The following packages will be deinstalled: >>> >>> lapack-3.4.0_2 >>> >>> The deinstallation will free 28 MB Deinstalling >>> lapack-3.4.0_2...lapack-3.4.0_2 is required by: qrupdate-1.1.1, >>> deleting anyway pkg: Cannot run script(DEINSTALL): Argument >>> list too long *** [deinstall] Error code 3 I have located the line that is causing this error. It is the posix_spawn on line 102 of libpkg/script.c. The argument length is limited to KERN_ARGMAX (sysctl kern.argmax) which seems to be a R/O value initialized to 256KB. AFAICT this is not even a loader tuneable. A new kernel must be built, or pkg must be modified to honor the argument length limit. The argument is the string argument of "sh -c <string>", which can not be split in the general case. In the specific case of math/lapack, the arguments to execve() (called by posix_spawn()) are: argv[0] = "sh" argv[1] = "-c" argv[2] = " set -- lapack-3.4.0_2 rm -f /usr/local/man/cat3/INSTALL_ilaver.f.3.gz ... /usr/local/man/cat3/zupmtr.f.3.gz.bz2" The argument list must be broken into pieces of less than 256KB, since rising KERN_ARGMAX to >330KB will lead to the same problem with the next port with even longer PLIST. Regards, STefan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlA8jA8ACgkQ69HRkrVjAEzuXgCfTP0gdtRa2CqWp3iWwKu90LO8 ThkAniYRTiGP870wrHwGKCg/F1UmWneF =UqHR -----END PGP SIGNATURE-----
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