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author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-07-07 10:49:11 +0100 |
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committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-07-08 17:32:56 +0100 |
commit | 17796419b5fd694348cceb65c3f77601faae082c (patch) | |
tree | 077996aa8d9b0151191a812928de0b8d10225c2d /sysdeps/unix/sysv | |
parent | 0c7b002fac12dcb2f53ba83ee56bb3b5d2439447 (diff) | |
download | glibc-17796419b5fd694348cceb65c3f77601faae082c.tar.gz glibc-17796419b5fd694348cceb65c3f77601faae082c.tar.xz glibc-17796419b5fd694348cceb65c3f77601faae082c.zip |
rtld: Account static TLS surplus for audit modules
The new static TLS surplus size computation is surplus_tls = 192 * (nns-1) + 144 * nns + 512 where nns is controlled via the rtld.nns tunable. This commit accounts audit modules too so nns = rtld.nns + audit modules. rtld.nns should only include the namespaces required by the application, namespaces for audit modules are accounted on top of that so audit modules don't use up the static TLS that is reserved for the application. This allows loading many audit modules without tuning rtld.nns or using up static TLS, and it fixes FAIL: elf/tst-auditmany Note that DL_NNS is currently a hard upper limit for nns, and if rtld.nns + audit modules go over the limit that's a fatal error. By default rtld.nns is 4 which allows 12 audit modules. Counting the audit modules is based on existing audit string parsing code, we cannot use GLRO(dl_naudit) before the modules are actually loaded.
Diffstat (limited to 'sysdeps/unix/sysv')
0 files changed, 0 insertions, 0 deletions