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| author | Florian Weimer <fweimer@redhat.com> | 2019-06-28 10:12:50 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-06-28 10:15:38 +0200 |
| commit | f0b2132b35248c1f4a80f62a2c38cddcc802aa8c (patch) | |
| tree | 32e3b30bba3d07b48c40035d8a4011ed39a212ef /ChangeLog | |
| parent | 17432d7150bdab3bce2ea66c70ad6c920f54077a (diff) | |
| download | glibc-f0b2132b35248c1f4a80f62a2c38cddcc802aa8c.tar.gz glibc-f0b2132b35248c1f4a80f62a2c38cddcc802aa8c.tar.xz glibc-f0b2132b35248c1f4a80f62a2c38cddcc802aa8c.zip | |
ld.so: Support moving versioned symbols between sonames [BZ #24741]
This change should be fully backwards-compatible because the old code aborted the load if a soname mismatch was encountered (instead of searching further for a matching symbol). This means that no different symbols are found. The soname check was explicitly disabled for the skip_map != NULL case. However, this only happens with dl(v)sym and RTLD_NEXT, and those lookups do not come with a verneed entry that could be used for the check. The error check was already explicitly disabled for the skip_map != NULL case, that is, when dl(v)sym was called with RTLD_NEXT. But _dl_vsym always sets filename in the struct r_found_version argument to NULL, so the check was not active anyway. This means that symbol lookup results for the skip_map != NULL case do not change, either.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 07d1bd648b..2bb4d832a6 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,34 @@ 2019-06-28 Florian Weimer <fweimer@redhat.com> + [BZ #24741] + * elf/dl-lookup.c (do_lookup_x): Do not fail if there is a soname + mismatch in a versioned symbol reference. + (_dl_lookup_symbol_x): Do not report soname mismatch failures. + * elf/Makefile [$(build-shared)] (tests): Add tst-sonamemove-link, + tst-sonamemove-dlopen. + (module-names): Add tst-sonamemove-linkmod1, + tst-sonamemove-runmod1, tst-sonamemove-runmod2. + (LDFLAGS-tst-sonamemove-linkmod1.so): Set. + (LDFLAGS-tst-sonamemove-runmod1.so): Likewise. + (LDFLAGS-tst-sonamemove-runmod2.so): Likewise. + (tst-sonamemove-runmod1.so): Link against + tst-sonamemove-runmod2.so. + (tst-sonamemove-link): Link against tst-sonamemove-linkmod1.so. + (tst-sonamemove-link.out): Depend on tst-sonamemove-runmod1.so, + tst-sonamemove-runmod2.so. + (tst-sonamemove-dlopen): Link with -ldl. + (tst-sonamemove-dlopen.out): Likewise. + * elf/tst-sonamemove-link.c: New file. + * elf/tst-sonamemove-dlopen.c: Likewise. + * elf/tst-sonamemove-linkmod1.c: Likewise. + * elf/tst-sonamemove-linkmod1.map: Likewise. + * elf/tst-sonamemove-runmod1.c: Likewise. + * elf/tst-sonamemove-runmod1.map: Likewise. + * elf/tst-sonamemove-runmod2.c: Likewise. + * elf/tst-sonamemove-runmod2.map: Likewise. + +2019-06-28 Florian Weimer <fweimer@redhat.com> + * support/xdlfcn.h (xdlvsym): Declare function. * support/xdlfcn.c (xdlvsym): Define funciton. |