From 600d9e0c87940da9b0fdeff492bf888df852d40c Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 4 Dec 2020 09:13:43 +0100 Subject: elf: Add glibc-hwcaps subdirectory support to ld.so cache processing This recognizes the DL_CACHE_HWCAP_EXTENSION flag in cache entries, and picks the supported cache entry with the highest priority. The elf/tst-glibc-hwcaps-prepend-cache test documents a non-desired aspect of the current cache implementation: If the cache selects a DSO that does not exist on disk, _dl_map_object falls back to open_path, which may or may not find an alternative implementation. This is an existing limitation that also applies to the legacy hwcaps processing for ld.so.cache. Reviewed-by: Adhemerval Zanella --- elf/tst-glibc-hwcaps-cache.root/etc/ld.so.conf | 2 ++ elf/tst-glibc-hwcaps-cache.root/postclean.req | 0 2 files changed, 2 insertions(+) create mode 100644 elf/tst-glibc-hwcaps-cache.root/etc/ld.so.conf create mode 100644 elf/tst-glibc-hwcaps-cache.root/postclean.req (limited to 'elf/tst-glibc-hwcaps-cache.root') diff --git a/elf/tst-glibc-hwcaps-cache.root/etc/ld.so.conf b/elf/tst-glibc-hwcaps-cache.root/etc/ld.so.conf new file mode 100644 index 0000000..e1e74db --- /dev/null +++ b/elf/tst-glibc-hwcaps-cache.root/etc/ld.so.conf @@ -0,0 +1,2 @@ +# This file was created to suppress a warning from ldconfig: +# /sbin/ldconfig: Warning: ignoring configuration file that cannot be opened: /etc/ld.so.conf: No such file or directory diff --git a/elf/tst-glibc-hwcaps-cache.root/postclean.req b/elf/tst-glibc-hwcaps-cache.root/postclean.req new file mode 100644 index 0000000..e69de29 -- cgit v1.1