From 2f54c82dacba646139a773ab43fc2cdb47ee1f5b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 21 Jul 2000 04:12:25 +0000 Subject: Update. * elf/Makefile (tests): Add nodlopen. Add rules to generate nodlopen. * include/dlfcn.h: Define __RTLD_DLOPEN. * elf/dl-load.c (_dl_map_object_from_fd): If DF_1_NOOPEN is set and this is a dlopen() call, do not load the binary. * dlfcn/dlopen.c: Add __RTLD_DLOPEN to mode passed down to _dl_open. * dlfcn/dlopenold.c: Likewise. * configure.in: Add test for -z nodelete option. * config.make.in: Define have-z-nodelete with libc_cv_z_nodelete. 2000-07-20 Mark Kettenis Make Hesiod NSS module thread-safe. * hesiod/README.hesiod: Update. * hesiod/Versions [GLIBC_2.2]: Add _nss_hesiod_getservbyport_r, _nss_hesiod_setprotoent, _nss_hesiod_endprotoent, _nss_hesiod_getprotobyname_r, and _nss_hesiod_getprotobynumber_r. * hesiod/Makefile (libnss_hesiod-routines): Add hesiod-init and hesiod-proto. * hesiod/nss_hesiod/hesiod-init.c: New file. * hesiod/nss_hesiod/hesiod-pwd.c: Rewritten for thread-safeness. * hesiod/nss_hesiod/hesiod-grp.c: Likewise. * hesiod/nss_hesiod/nss_hesiod.h: New file. * hesiod/nss_hesiod/hesiod-service.c (_nss_hesiod_getservbyport_r): New function. Provide support for looking up services by port number. * hesiod/nss_hesiod/hesiod-proto.c: New file. * hesiod/hesiod.c: Update from BIND 8.2.3-T5B. * hesiod/hesiod.h: Likewise. * hesiod/hesiod_p.h: Likewise. 2000-07-20 Mark Kettenis Fix problems with `struct __res_state' getting too big. * resolv/resolv.h (struct __sockaddr_in): New definition. (struct __res_state): Use __sockaddr_in instead of sockaddr_in in the private parts of the structure to save some space. * resolv/res_send.c (res_nsend): Cast &EXT(statp).nsaddrs[ns] to (struct sockaddr_in *) in call to sock_eq. Use memcpy to copy statp->nsaddr_list[ns] to &EXT(statp).nsaddrs[ns]. 2000-07-20 Ulrich Drepper * sysdeps/mach/hurd/dl-sysdep.c: Likewise. --- elf/dl-load.c | 37 +++++++++++++++++++++++++++++++++---- 1 file changed, 33 insertions(+), 4 deletions(-) (limited to 'elf/dl-load.c') diff --git a/elf/dl-load.c b/elf/dl-load.c index fbf82e2068..1e5ad5073d 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -688,7 +688,7 @@ static #endif struct link_map * _dl_map_object_from_fd (const char *name, int fd, char *realname, - struct link_map *loader, int l_type, int noload) + struct link_map *loader, int l_type, int mode) { /* This is the expected ELF header. */ #define ELF32_CLASS ELFCLASS32 @@ -752,7 +752,7 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, return l; } - if (noload) + if (mode & RTLD_NOLOAD) /* We are not supposed to load the object unless it is already loaded. So return now. */ return NULL; @@ -1097,6 +1097,35 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, } elf_get_dynamic_info (l); + + /* Make sure we are dlopen()ing an object which has the DF_1_NOOPEN + flag set. */ + if (__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0) + && (mode & __RTLD_DLOPEN)) + { + /* Remove from the module list. */ + assert (l->l_next == NULL); +#ifdef SHARED + if (l->l_prev == NULL) + /* No other module loaded. */ + _dl_loaded = NULL; + else +#endif + l->l_prev->l_next = NULL; + + /* We are not supposed to load this object. Free all resources. */ + __munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start); + + free (l->l_libname); + + if (l->l_phdr_allocated) + free ((void *) l->l_phdr); + + free (l); + + _dl_signal_error (0, name, N_("shared object cannot be dlopen()ed")); + } + if (l->l_info[DT_HASH]) _dl_setup_hash (l); @@ -1306,7 +1335,7 @@ open_path (const char *name, size_t namelen, int preloaded, struct link_map * internal_function _dl_map_object (struct link_map *loader, const char *name, int preloaded, - int type, int trace_mode, int noload) + int type, int trace_mode, int mode) { int fd; char *realname; @@ -1506,5 +1535,5 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, _dl_signal_error (errno, name, N_("cannot open shared object file")); } - return _dl_map_object_from_fd (name, fd, realname, loader, type, noload); + return _dl_map_object_from_fd (name, fd, realname, loader, type, mode); } -- cgit 1.4.1