Gentoo Archives: gentoo-hardened

From:	pageexec@××××××××.hu
To:	gentoo-hardened@l.g.o
Subject:	Re: [gentoo-hardened] mysql 4.1 requires shlib_t:file execmod?
Date:	Mon, 24 Oct 2005 13:51:32
Message-Id:	`435D021A.9571.AEB74AE1@pageexec.freemail.hu`
In Reply to:	Re: [gentoo-hardened] mysql 4.1 requires shlib_t:file execmod? by Antoine Martin

1	On 23 Oct 2005 at 21:42, Antoine Martin wrote:
2
3	ok, so this is the story of the textrelocs in libmysqlclient:
4
5	> open("/usr/lib/libmysqlclient.so.14", O_RDONLY) = 3
6	> mmap2(NULL, 2061732, PROT_READ\|PROT_EXEC, MAP_PRIVATE\|MAP_DENYWRITE, 3,
7	> 0) = 0xb7d24000
8	> mprotect(0xb7d24000, 1073152, PROT_READ\|PROT_WRITE) = 0
9	> mprotect(0xb7d24000, 1073152, PROT_READ\|PROT_EXEC) = -1 EACCES
10	> (Permission denied)
11
12	this is either PaX (if you have NOELFRELOCS on) or SELinux,
13	i think they call it execmem or something like that.
14
15	what do 'scanelf -T /usr/lib/libmysqlclient.so.14' or
16	'eu-findtextrel /usr/lib/libmysqlclient.so.14'
17	say (it can't be 'nothing' for sure ;-)? eu-findtexrel
18	is in dev-libs/elfutils.
19
20	--
21	gentoo-hardened@g.o mailing list

Subject	Author
Re: [gentoo-hardened] mysql 4.1 requires shlib_t:file execmod?	Antoine Martin <antoine@××××××××××.uk>