Author: kib
Date: Mon May 29 13:18:20 2017
New Revision: 319134
URL: https://svnweb.freebsd.org/changeset/base/319134
Log:
MFC r318312:
Fix the AT_EXECFD functionality.
Modified:
stable/11/libexec/rtld-elf/map_object.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/libexec/rtld-elf/map_object.c
==============================================================================
--- stable/11/libexec/rtld-elf/map_object.c Mon May 29 13:17:00 2017
(r319133)
+++ stable/11/libexec/rtld-elf/map_object.c Mon May 29 13:18:20 2017
(r319134)
@@ -193,6 +193,8 @@ map_object(int fd, const char *path, con
base_flags = MAP_PRIVATE | MAP_ANON | MAP_NOCORE;
if (npagesizes > 1 && round_page(segs[0]->p_filesz) >= pagesizes[1])
base_flags |= MAP_ALIGNED_SUPER;
+ if (base_vaddr != 0)
+ base_flags |= MAP_FIXED | MAP_EXCL;
mapbase = mmap(base_addr, mapsize, PROT_NONE, base_flags, -1, 0);
if (mapbase == (caddr_t) -1) {
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