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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2020-11-10 23:35:19 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2020-11-11 02:36:22 +0100
commit3d3316b1dee885153d44210b2e95dba68d00613a (patch)
tree997c7734e51a76d2c11d0bfb5227f463c75df2e2 /include/sys
parenta40b18b2330026cedc07348481bf3219f668adca (diff)
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hurd: keep only required PLTs in ld.so
We need NO_RTLD_HIDDEN because of the need for PLT calls in ld.so. See Roland's comment in https://sourceware.org/bugzilla/show_bug.cgi?id=15605 "in the Hurd it's crucial that calls like __mmap be the libc ones instead of the rtld-local ones after the bootstrap phase, when the dynamic linker is being used for dlopen and the like." We used to just avoid all hidden use in the rtld ; this commit switches to keeping only those that should use PLT calls, i.e. essentially those defined in sysdeps/mach/hurd/dl-sysdep.c: __assert_fail __assert_perror_fail __*stat64 _exit This fixes a few startup issues, notably the call to __tunable_get_val that is made before PLTs are set up.
Diffstat (limited to 'include/sys')
-rw-r--r--include/sys/utsname.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sys/utsname.h b/include/sys/utsname.h
index 9ed5fa2565..14f4247dd4 100644
--- a/include/sys/utsname.h
+++ b/include/sys/utsname.h
@@ -7,7 +7,7 @@ extern int __uname (struct utsname *__name);
libc_hidden_proto (uname)
libc_hidden_proto (__uname)
-# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN
+# if IS_IN (rtld)
extern __typeof (__uname) __uname attribute_hidden;
# endif
#endif