Messages in this thread |  | | Date | Sat, 13 Oct 2001 15:50:05 -0700 | From | Aaron Lehmann <> | Subject | Re: Security question: "Text file busy" overwriting executables but not shared libraries? |
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On Sat, Oct 13, 2001 at 04:27:48PM -0600, Eric W. Biederman wrote: > > But it does have the advantage of allowing the sharing of memory, does > > it not? > > Only if you are going to write to the data.
Why? If gcc and another application read the source file with an mmap() with the right parameters (read-only), it would only be shared between them, as I understand it. If they both read() the file into private buffers those can not be shared. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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