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7fd852f860
freebsd/libexec
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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
..
atf Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and 2015-10-12 08:16:03 +00:00
atrun Call /etc/crontab the "system crontab", not "root's crontab". While 2015-06-22 20:24:59 +00:00
bootpd META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
casper META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
comsat Add META_MODE support. 2015-06-13 19:20:56 +00:00
dma META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
fingerd Add META_MODE support. 2015-06-13 19:20:56 +00:00
ftpd Upgrade libxo to 0.4.5. 2015-08-24 16:26:20 +00:00
getty Add META_MODE support. 2015-06-13 19:20:56 +00:00
hyperv META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
mail.local META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
mknetid Add META_MODE support. 2015-06-13 19:20:56 +00:00
pppoed Add META_MODE support. 2015-06-13 19:20:56 +00:00
rbootd Add META_MODE support. 2015-06-13 19:20:56 +00:00
revnetgroup Add META_MODE support. 2015-06-13 19:20:56 +00:00
rlogind Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpc.rquotad Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpc.rstatd Update dependencies after r291406 added libelf to libkvm. 2015-12-01 05:18:48 +00:00
rpc.rusersd Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpc.rwalld Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpc.sprayd Add META_MODE support. 2015-06-13 19:20:56 +00:00
rshd Add META_MODE support. 2015-06-13 19:20:56 +00:00
rtld-aout More -Wmissing-variable-declarations fixes. 2012-10-19 14:49:42 +00:00
rtld-elf This seems like a very trivial bug that should have been squashed a long 2016-01-30 04:16:05 +00:00
save-entropy Add META_MODE support. 2015-06-13 19:20:56 +00:00
smrsh META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
talkd Don't assign 'ptr' without using it. 2015-08-30 08:38:59 +00:00
tcpd Use LIBEXECDIR for /usr/libexec. 2015-11-26 01:14:40 +00:00
telnetd Add META_MODE support. 2015-06-13 19:20:56 +00:00
tests Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and 2015-10-12 08:16:03 +00:00
tftp-proxy Add META_MODE support. 2015-06-13 19:20:56 +00:00
tftpd Add META_MODE support. 2015-06-13 19:20:56 +00:00
ulog-helper Add META_MODE support. 2015-06-13 19:20:56 +00:00
ypxfr Staticfy and constify some variables and clean up the code a bit to make it 2015-07-28 02:32:40 +00:00
Makefile Move all the dma(8) components into one single directory 2015-10-09 22:09:44 +00:00
Makefile.amd64 HYPERV isn't available on all architectures, but just on by default 2014-10-16 00:33:06 +00:00
Makefile.i386 HYPERV isn't available on all architectures, but just on by default 2014-10-16 00:33:06 +00:00
Makefile.inc
Makefile.pc98 Add an "empty" Makefile.pc98 because it doesn't need/want HYPERV. It 2014-10-16 14:08:59 +00:00