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Date: Tue, 07 Aug 2007 23:13:00 +0200 From: Michael Kerrisk <mtk-manpages@....net> To: Ollie Wild <aaw@...gle.com> CC: linux-kernel@...r.kernel.org Subject: Re: execve manpage changes Ollie Wild wrote: > Michael, > > Per our previous discussion, here are the updates to the execve(2) > manpage resulting from the variable length argument support patch in > linux-2.6.23-rc1. The execve API is unmodified. However, the > following should be noted in the "Notes" section. > > Prior to linux-2.6.23, the memory used to store the environment and > argument list strings was limited to 32 (MAX_ARG_PAGES) pages. On > most architectures, the page size is 4kB, leading to a maximum size of > 128kB. > > In linux-2.6.23 and later, most architectures support a size limit > derived from the current RLIMIT_STACK setting (see getrlimit(2)). For > these architectures, the total size is limited to 1/4 the allowed > stack size, the limit per string is 32 pages (MAX_ARG_STRLEN), and the > maximum number of strings is 0x7FFFFFFF. Architectures with no memory > management unit are excepted: they maintain the pre-2.6.23 limit. Hello Ollie, Thanks. I'll see that this material makes it into a man pages release closer to the 2.6.23 final release. Cheers, Michael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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