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Re: [PATCH] Support gzip compressed exec and core files in gdb

On 03/12/15 10:11, Jan Kratochvil wrote:
On Thu, 12 Mar 2015 17:58:02 +0100, Michael Eager wrote:
I misspoke/misremembered.  It isn't exec_close() which closes the
file, it is bfd_cache_close_all().  The bfd is not closed, only
the file.

This is problematic, I have already posted a pending patch for it:
	[patch] Do not close BFDs, breaking deleted inferior shlibs

Thanks.  I'll see if this eliminates the need for the BFD patch.

Allowing an opened fd to be passed into BFD makes
doing the decompression in BFD problematic, since BFD doesn't
know where the opened file was found, and the decompress libraries
(at least gzopen()) expects a path, not an opened fd.

One can readlink(/proc/self/fd/%d) although I haven't checked now how exactly
to use it.

This won't tell what flags were used to open the file,
so that the same flags can be used on the decompressed file.

Michael Eager
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

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