From eec8b6cae586451deadf30c371f7b5e4c9d573d1 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 27 Mar 2004 03:40:33 +0000 Subject: Update. 2004-03-26 Ulrich Drepper * elf/dl-caller.c: New file. * include/caller.h: New file. * Makefile (distribute): Add include/caller.h. * elf/Makefile (dl-routines): Add dl-caller. * elf/dl-load.c (_dl_map_object_from_fd): Record l_text_end. * elf/dl-open.c (check_libc_caller): Removed. (dl_open_worker): Use __check_caller instead. * elf/rtld.c (_rtld_global_ro): Initialize _dl_check_caller. (_dl_start_final): Record l_text_end for ld.so map. (dl_main): Record l_text_end for main object and vdso. * include/link.h (struct link_map): Add l_text_end field. * sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Add _dl_check_caller field. Define enum allowmask. Add declaration of _dl_check_caller. * sysdeps/unix/sysv/linux/dl-execstack.c: Also use __check_caller test. --- elf/dl-load.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'elf/dl-load.c') diff --git a/elf/dl-load.c b/elf/dl-load.c index 1a3c9c5ed9..162fb30af3 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1110,7 +1110,7 @@ cannot allocate TLS data structures for initial thread"); unallocated. Then jump into the normal segment-mapping loop to handle the portion of the segment past the end of the file mapping. */ - __mprotect ((caddr_t) (l->l_addr + c->mapend), + __mprotect ((caddr_t) l->l_text_end, loadcmds[nloadcmds - 1].allocend - c->mapend, PROT_NONE); @@ -1146,6 +1146,9 @@ cannot allocate TLS data structures for initial thread"); goto map_error; postmap: + if (c->prot & PROT_EXEC) + l->l_text_end = l->l_addr + c->mapend; + if (l->l_phdr == 0 && (ElfW(Off)) c->mapoff <= header->e_phoff && ((size_t) (c->mapend - c->mapstart + c->mapoff) -- cgit v1.2.3