diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-10-13 09:49:34 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-10-14 14:52:07 -0300 |
| commit | d6d89608ac8cf2b37c75debad1fff653f6939f90 (patch) | |
| tree | 963c9d77032467e0b4af4f274979de09bd5c054e /elf/dl-load.c | |
| parent | e59ced238482fd71f3e493717f14f6507346741e (diff) | |
| download | glibc-d6d89608ac8cf2b37c75debad1fff653f6939f90.zip glibc-d6d89608ac8cf2b37c75debad1fff653f6939f90.tar.gz glibc-d6d89608ac8cf2b37c75debad1fff653f6939f90.tar.bz2 | |
elf: Fix dynamic-link.h usage on rtld.c
The 4af6982e4c fix does not fully handle RTLD_BOOTSTRAP usage on
rtld.c due two issues:
1. RTLD_BOOTSTRAP is also used on dl-machine.h on various
architectures and it changes the semantics of various machine
relocation functions.
2. The elf_get_dynamic_info() change was done sideways, previously
to 490e6c62aa get-dynamic-info.h was included by the first
dynamic-link.h include *without* RTLD_BOOTSTRAP being defined.
It means that the code within elf_get_dynamic_info() that uses
RTLD_BOOTSTRAP is in fact unused.
To fix 1. this patch now includes dynamic-link.h only once with
RTLD_BOOTSTRAP defined. The ELF_DYNAMIC_RELOCATE call will now have
the relocation fnctions with the expected semantics for the loader.
And to fix 2. part of 4af6982e4c is reverted (the check argument
elf_get_dynamic_info() is not required) and the RTLD_BOOTSTRAP
pieces are removed.
To reorganize the includes the static TLS definition is moved to
its own header to avoid a circular dependency (it is defined on
dynamic-link.h and dl-machine.h requires it at same time other
dynamic-link.h definition requires dl-machine.h defitions).
Also ELF_MACHINE_NO_REL, ELF_MACHINE_NO_RELA, and ELF_MACHINE_PLT_REL
are moved to its own header. Only ancient ABIs need special values
(arm, i386, and mips), so a generic one is used as default.
The powerpc Elf64_FuncDesc is also moved to its own header, since
csu code required its definition (which would require either include
elf/ folder or add a full path with elf/).
Checked on x86_64, i686, aarch64, armhf, powerpc64, powerpc32,
and powerpc64le.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index 335c79f..18d3e8f 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1298,7 +1298,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, else l->l_ld = (ElfW(Dyn) *) ((ElfW(Addr)) l->l_ld + l->l_addr); - elf_get_dynamic_info (l, false); + elf_get_dynamic_info (l); /* Make sure we are not dlopen'ing an object that has the DF_1_NOOPEN flag set, or a PIE object. */ |