Maxim Sobolev 7fd852f860 This seems like a very trivial bug that should have been squashed a long ... time ago, but for some reason it was not. Basically, without this change dlopen(3)'ing an empty .so file would just cause application to dump core with SIGSEGV. Make sure the file has enough data for at least the ELF header before mmap'ing it. Add a test case to check that dlopen an empty file return an error. There were a separate discussion as to whether it should be SIGBUS instead when you try to access region mapped from an empty file, but it's definitely SIGSEGV now, so if anyone want to check that please be my guest. Reviewed by: mjg, cem MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D5112		2016-01-30 04:16:05 +00:00
..
aarch64	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
amd64	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
arm	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
i386	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
mips	Create a generalized exec hook that different architectures can hook	2016-01-03 04:32:02 +00:00
powerpc	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
powerpc64	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
riscv	Follow r293066 adding a generalized exec hook for RISC-V as well.	2016-01-23 11:46:52 +00:00
sparc64	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
tests	Fix LDADD/DPADD that should be LIBADD.	2015-12-04 03:17:47 +00:00
debug.c	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
debug.h	Remove historical GNUC test	2015-05-06 15:29:11 +00:00
libmap.c	Rather than using the #define for path names, indirect through a char *	2015-10-31 04:39:55 +00:00
libmap.h	Make the directory mapping functionality, which was previously only	2013-09-21 21:03:52 +00:00
Makefile	Follow-on to r291666: use -ffreestanding instead of -fno-builtin.	2015-12-03 21:25:59 +00:00
Makefile.depend	new depends	2015-06-16 23:37:19 +00:00
malloc.c	Move all the paths into a new path.h to centralize them.	2015-10-31 04:39:28 +00:00
map_object.c	This seems like a very trivial bug that should have been squashed a long	2016-01-30 04:16:05 +00:00
paths.h	Restore ABI variants now that ldconfig groks -soft. In addition, as a	2016-01-18 21:40:20 +00:00
rtld_lock.c	Change compiler setting to make default visibility of the symbols for	2015-03-29 18:53:21 +00:00
rtld_lock.h	Change compiler setting to make default visibility of the symbols for	2015-03-29 18:53:21 +00:00
rtld_printf.c	Add the LD_LIBRARY_PATH_FDS environmental variable.	2014-06-20 17:08:32 +00:00
rtld_printf.h	Add the LD_LIBRARY_PATH_FDS environmental variable.	2014-06-20 17:08:32 +00:00
rtld_tls.h	Change compiler setting to make default visibility of the symbols for	2015-03-29 18:53:21 +00:00
rtld.1	mdoc: remove superfluous paragraph macros.	2014-06-23 18:40:21 +00:00
rtld.c	Do not unlock rtld_phdr_lock over callback invocations.	2016-01-27 20:20:37 +00:00
rtld.h	Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and	2016-01-20 07:21:33 +00:00
Symbol.map	Add rtld private interface for dso to detect dynamic loading	2015-01-03 18:09:53 +00:00
xmalloc.c	Increase alignment to size of pointer if the alignment is too small.	2014-02-22 11:06:48 +00:00