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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-11-10 23:35:19 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-11-11 02:36:22 +0100 |
| commit | 3d3316b1dee885153d44210b2e95dba68d00613a (patch) | |
| tree | 997c7734e51a76d2c11d0bfb5227f463c75df2e2 /sysdeps/mach/hurd/dl-sysdep.c | |
| parent | a40b18b2330026cedc07348481bf3219f668adca (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 'sysdeps/mach/hurd/dl-sysdep.c')
| -rw-r--r-- | sysdeps/mach/hurd/dl-sysdep.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c index 5c0bb3124d..6b32d41c76 100644 --- a/sysdeps/mach/hurd/dl-sysdep.c +++ b/sysdeps/mach/hurd/dl-sysdep.c @@ -641,7 +641,8 @@ __sbrk (intptr_t increment) return (void *) addr; } -check_no_hidden(__strtoul_internal); +/* This is only used by hurdlookup for the /dev/fd/nnn magic. + * We avoid pulling the whole libc implementation, and we can keep this hidden. */ unsigned long int weak_function __strtoul_internal (const char *nptr, char **endptr, int base, int group) { @@ -698,7 +699,6 @@ abort (void) /* We need this alias to satisfy references from libc_pic.a objects that were affected by the libc_hidden_proto declaration for abort. */ strong_alias (abort, __GI_abort) -strong_alias (abort, __GI___chk_fail) strong_alias (abort, __GI___fortify_fail) strong_alias (abort, __GI___assert_fail) strong_alias (abort, __GI___assert_perror_fail) |