diff options
| -rw-r--r-- | extra/Configs/Config.in | 13 | ||||
| -rw-r--r-- | ldso/include/dl-elf.h | 2 | ||||
| -rw-r--r-- | ldso/ldso/dl-elf.c | 13 |
3 files changed, 24 insertions, 4 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index 606878897..743c3f554 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -264,6 +264,19 @@ config LDSO_BASE_FILENAME WARNING: Changing the default prefix could cause problems with binutils' ld ! +config LDSO_RUNPATH + bool "Enable ELF RUNPATH tag support" + depends on BUILD_UCLIBC_LDSO + default y + help + ELF's may have dynamic RPATH/RUNPATH tags. These tags list paths + which extend the library search paths. They are really only useful + if a package installs libraries in non standard locations and + ld.so.conf support is disabled. + + Usage of RUNPATH tags is not too common, so disabling this feature + should be safe for most people. + config DL_FINI_CRT_COMPAT bool "uClibc 0.9.27 compatibility" default n diff --git a/ldso/include/dl-elf.h b/ldso/include/dl-elf.h index 6ecdfddfb..a3e453f58 100644 --- a/ldso/include/dl-elf.h +++ b/ldso/include/dl-elf.h @@ -106,10 +106,12 @@ void __dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[], void dynamic_info[DT_BIND_NOW] = 1; if (dpnt->d_tag == DT_TEXTREL) dynamic_info[DT_TEXTREL] = 1; +#ifdef __LDSO_RUNPATH__ if (dpnt->d_tag == DT_RUNPATH) dynamic_info[DT_RPATH] = 0; if (dpnt->d_tag == DT_RPATH && dynamic_info[DT_RUNPATH]) dynamic_info[DT_RPATH] = 0; +#endif } else if (dpnt->d_tag < DT_LOPROC) { if (dpnt->d_tag == DT_RELOCCOUNT) dynamic_info[DT_RELCONT_IDX] = dpnt->d_un.d_val; diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c index d15621ea3..bf0e1bb03 100644 --- a/ldso/ldso/dl-elf.c +++ b/ldso/ldso/dl-elf.c @@ -255,7 +255,7 @@ unsigned long _dl_internal_error_number; struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, struct elf_resolve *tpnt, char *full_libname, int __attribute__((unused)) trace_loaded_objects) { - char *pnt, *pnt1; + char *pnt; struct elf_resolve *tpnt1; char *libname; @@ -269,9 +269,9 @@ struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, /* Skip over any initial initial './' and '/' stuff to * get the short form libname with no path garbage */ - pnt1 = _dl_strrchr(libname, '/'); - if (pnt1) { - libname = pnt1 + 1; + pnt = _dl_strrchr(libname, '/'); + if (pnt) { + libname = pnt + 1; } /* Critical step! Weed out duplicates early to avoid @@ -300,6 +300,7 @@ struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, * The ABI specifies that RPATH is searched before LD_LIBRARY_PATH or * the default path of /usr/lib. Check in rpath directories. */ +#ifdef __LDSO_RUNPATH__ pnt = (tpnt ? (char *) tpnt->dynamic_info[DT_RPATH] : NULL); if (pnt) { pnt += (unsigned long) tpnt->dynamic_info[DT_STRTAB]; @@ -307,6 +308,7 @@ struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, if ((tpnt1 = search_for_named_library(libname, secure, pnt, rpnt)) != NULL) return tpnt1; } +#endif /* Check in LD_{ELF_}LIBRARY_PATH, if specified and allowed */ if (_dl_library_path) { @@ -316,9 +318,11 @@ struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, return tpnt1; } } + /* * The ABI specifies that RUNPATH is searched after LD_LIBRARY_PATH. */ +#ifdef __LDSO_RUNPATH__ pnt = (tpnt ? (char *)tpnt->dynamic_info[DT_RUNPATH] : NULL); if (pnt) { pnt += (unsigned long) tpnt->dynamic_info[DT_STRTAB]; @@ -326,6 +330,7 @@ struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt, if ((tpnt1 = search_for_named_library(libname, secure, pnt, rpnt)) != NULL) return tpnt1; } +#endif /* * Where should the cache be searched? There is no such concept in the |