From b93b98daf0dd45ac52f99fc4d906e5926cdd5239 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Timo=20Ter=C3=A4s?= Date: Thu, 22 Apr 2010 08:28:10 +0000 Subject: ldso: support RTLD_NODELETE and DF_1_NODELETE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Honor the nodelete flags so we don't delete shared library if it's sticky. This is useful for libpthread if it gets pulled in by a dlopen'ed library. Signed-off-by: Timo Teräs Signed-off-by: Austin Foxley --- ldso/include/dl-elf.h | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'ldso/include/dl-elf.h') diff --git a/ldso/include/dl-elf.h b/ldso/include/dl-elf.h index 076678cfc..9c2888f5b 100644 --- a/ldso/include/dl-elf.h +++ b/ldso/include/dl-elf.h @@ -104,13 +104,15 @@ extern void _dl_protect_relro (struct elf_resolve *l); # define DT_GNU_HASH_IDX (DT_RELCONT_IDX + 1) #endif -extern void _dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], - void *debug_addr, DL_LOADADDR_TYPE load_off); +extern unsigned int _dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], + void *debug_addr, DL_LOADADDR_TYPE load_off); static __always_inline -void __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], - void *debug_addr, DL_LOADADDR_TYPE load_off) +unsigned int __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], + void *debug_addr, DL_LOADADDR_TYPE load_off) { + unsigned int rtld_flags = 0; + for (; dpnt->d_tag; dpnt++) { if (dpnt->d_tag < DT_NUM) { dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val; @@ -138,9 +140,12 @@ void __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], } else if (dpnt->d_tag < DT_LOPROC) { if (dpnt->d_tag == DT_RELOCCOUNT) dynamic_info[DT_RELCONT_IDX] = dpnt->d_un.d_val; - if (dpnt->d_tag == DT_FLAGS_1 && - (dpnt->d_un.d_val & DF_1_NOW)) - dynamic_info[DT_BIND_NOW] = 1; + if (dpnt->d_tag == DT_FLAGS_1) { + if (dpnt->d_un.d_val & DF_1_NOW) + dynamic_info[DT_BIND_NOW] = 1; + if (dpnt->d_un.d_val & DF_1_NODELETE) + rtld_flags |= RTLD_NODELETE; + } #ifdef __LDSO_GNU_HASH_SUPPORT__ if (dpnt->d_tag == DT_GNU_HASH) dynamic_info[DT_GNU_HASH_IDX] = dpnt->d_un.d_ptr; @@ -167,6 +172,7 @@ void __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], ADJUST_DYN_INFO(DT_GNU_HASH_IDX, load_off); #endif #undef ADJUST_DYN_INFO + return rtld_flags; } /* Reloc type classes as returned by elf_machine_type_class(). -- cgit v1.2.3