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freebsd-nq/lib/libc/sys
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Konstantin Belousov 19bd0d9c85 Implement address space guards. 
Guard, requested by the MAP_GUARD mmap(2) flag, prevents the reuse of
the allocated address space, but does not allow instantiation of the
pages in the range.  It is useful for more explicit support for usual
two-stage reserve then commit allocators, since it prevents accidental
instantiation of the mapping, e.g. by mprotect(2).

Use guards to reimplement stack grow code.  Explicitely track stack
grow area with the guard, including the stack guard page.  On stack
grow, trivial shift of the guard map entry and stack map entry limits
makes the stack expansion.  Move the code to detect stack grow and
call vm_map_growstack(), from vm_fault() into vm_map_lookup().

As result, it is impossible to get random mapping to occur in the
stack grow area, or to overlap the stack guard page.

Enable stack guard page by default.

Reviewed by:	alc, markj
Man page update reviewed by:	alc, bjk, emaste, markj, pho
Tested by:	pho, Qualys
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D11306 (man pages)
2017-06-24 17:01:11 +00:00
..
__error.c Add missing include to eliminate -Wmissing-prototypes warnings 2015-09-20 03:49:08 +00:00
__vdso_gettimeofday.c Implement userspace gettimeofday(2) with HPET timecounter. 2016-08-17 09:52:09 +00:00
_exit.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
_umtx_op.2 _umtx_op(2): fix minor manlint issues 2017-05-23 07:26:45 +00:00
abort2.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
accept4.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
accept.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
accept.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
access.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
acct.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
adjtime.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
aio_cancel.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
aio_error.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
aio_fsync.2 Fix various nits in the aio operation manpages. 2016-08-19 17:37:32 +00:00
aio_mlock.2 Fix various nits in the aio operation manpages. 2016-08-19 17:37:32 +00:00
aio_read.2 Fix various nits in the aio operation manpages. 2016-08-19 17:37:32 +00:00
aio_return.2 Fully handle size_t lengths in AIO requests. 2016-03-21 21:37:33 +00:00
aio_suspend.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
aio_suspend.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
aio_waitcomplete.2 Fully handle size_t lengths in AIO requests. 2016-03-21 21:37:33 +00:00
aio_write.2 Fix various nits in the aio operation manpages. 2016-08-19 17:37:32 +00:00
bind.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
bindat.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
brk.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
cap_enter.2 cap_enter(2): fix manlint issues 2017-05-23 07:31:03 +00:00
cap_fcntls_limit.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
cap_ioctls_limit.2 forgot to bump date, and replace contraction (igor)... 2015-03-07 03:48:32 +00:00
cap_rights_limit.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
chdir.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
chflags.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
chmod.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
chown.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
chroot.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
clock_gettime.2 clock_gettime.2: add some clock IDs 2017-03-22 00:50:36 +00:00
clock_gettime.c
clock_nanosleep.c Add clock_nanosleep() 2017-03-19 00:51:12 +00:00
close.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
close.c Add missing includes to eliminate -Wmissing-prototypes warnings 2015-09-20 03:45:57 +00:00
closefrom.2 Reassign copyright statements on several files from Advanced 2015-04-23 14:22:20 +00:00
compat-ino64.h Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
connect.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
connect.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
connectat.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
cpuset_getaffinity.2 Allow cpuset_{get,set}affinity in capabilities mode 2017-05-24 00:58:30 +00:00
cpuset.2 cpuset.2: Document new API options 2017-05-03 18:46:33 +00:00
dup.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
execve.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
extattr_get_file.2
fcntl.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
fcntl.c The lseek(2), mmap(2), truncate(2), ftruncate(2), pread(2), and 2015-04-18 21:50:13 +00:00
fdatasync.c The fdatasync(2) call must be cancellation point. 2016-08-16 08:27:03 +00:00
ffclock.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
fhopen.2
flock.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
fork.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
fork.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
fstat.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
fstatat.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
fstatfs.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
fsync.2 Update the "first appeared in" version in several manual pages. 2017-05-24 17:50:34 +00:00
fsync.c Add missing includes to eliminate -Wmissing-prototypes warnings 2015-09-20 03:45:57 +00:00
getdents.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
getdirentries.2 Mention that the basep argument to getdirentries(2) can be NULL. 2017-05-28 21:42:47 +00:00
getdirentries.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
getdtablesize.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getfh.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getfsstat.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getfsstat.c Be sure to free allocated statfs11 buffer. 2017-06-24 00:28:35 +00:00
getgid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getgroups.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getitimer.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getlogin.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getloginclass.2 Add some .Xrs to getloginclass(2). 2016-07-12 06:00:57 +00:00
getpeername.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getpgrp.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getpid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getpriority.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getrlimit.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getrusage.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getsid.2
getsockname.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
getsockopt.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
gettimeofday.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
gettimeofday.c
getuid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
interposing_table.c Add clock_nanosleep() 2017-03-19 00:51:12 +00:00
intro.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
ioctl.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
issetugid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
jail.2 Mark jail(2), and the sysctls that it (and only it) uses as deprecated. 2016-05-30 05:21:24 +00:00
kenv.2 Make several improvements and corrections in the kenv(2) man page 2017-02-21 19:51:41 +00:00
kevent.c Make kevent(2) a cancellation point. 2015-03-29 19:14:41 +00:00
kill.2 kill(2): add missing section for sysctl(9) 2017-05-23 07:46:10 +00:00
kldfind.2
kldfirstmod.2
kldload.2
kldnext.2
kldstat.2
kldsym.2 Use 'cmd' rather than 'command' to match the function prototype. 2016-10-17 22:36:37 +00:00
kldunload.2
kqueue.2 Clarify usage of aio(4) with kqueue(2) 2017-06-23 00:40:09 +00:00
ktrace.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
link.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
lio_listio.2 Add documentation for the sigevent structure. 2016-07-15 15:12:56 +00:00
listen.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
lseek.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
lstat.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
madvise.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
Makefile.inc Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
mincore.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
minherit.2 Implement INHERIT_ZERO for minherit(2). 2017-03-14 17:10:42 +00:00
mkdir.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mkfifo.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mknod.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mknod.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
mlock.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mlockall.2
mmap.2 Implement address space guards. 2017-06-24 17:01:11 +00:00
modfind.2 Use the right argumant name 2016-03-18 08:47:17 +00:00
modnext.2
modstat.2
mount.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mprotect.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
mq_close.2
mq_getattr.2 Match the correct variable to the variable description. 2014-02-21 13:53:41 +00:00
mq_notify.2 Add documentation for the sigevent structure. 2016-07-15 15:12:56 +00:00
mq_open.2 document mqueuefs is required for mq_open... 2014-09-15 22:32:35 +00:00
mq_receive.2
mq_send.2
mq_setattr.2
msgctl.2
msgget.2
msgrcv.2 Change the return type of msgrcv() to ssize_t as required by POSIX. 2016-07-28 12:22:01 +00:00
msgsnd.2
msync.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
msync.c Add missing includes to eliminate -Wmissing-prototypes warnings 2015-09-20 03:45:57 +00:00
munmap.2 Implement address space guards. 2017-06-24 17:01:11 +00:00
nanosleep.2 Add clock_nanosleep() 2017-03-19 00:51:12 +00:00
nanosleep.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
nfssvc.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
ntp_adjtime.2
numa_getaffinity.2 Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
open.2 open(2): fix manlint warnings 2017-05-23 07:44:43 +00:00
open.c Reduce the size of the interposing table and amount of 2015-01-11 22:16:31 +00:00
openat.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
pathconf.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pdfork.2 pdwait4(2): Remove documentation of vaporware 2017-06-17 17:32:40 +00:00
pipe.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pipe.c Replace use of the pipe(2) system call with pipe2(2) with a zero flags 2016-06-22 21:11:27 +00:00
poll.2 Various mdoc fixes and a few EOL whitespace removals. 2014-12-21 12:36:36 +00:00
poll.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
posix_fadvise.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
posix_fallocate.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
posix_openpt.2 posix_openpt.2: Sort includes per style(9) 2016-09-21 17:51:27 +00:00
ppoll.c Make wait6(2), waitid(3) and ppoll(2) cancellation points. The 2015-04-18 21:35:41 +00:00
procctl.2 More trap_enotcap spelling fixes. 2017-03-16 13:19:38 +00:00
profil.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
pselect.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
pselect.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
ptrace.2 Add ptrace(PT_GET_SC_ARGS) command to return debuggee' current syscall 2017-06-12 21:15:43 +00:00
ptrace.c Rewrite ptrace(2) wrappers in C. 2016-08-29 18:47:51 +00:00
quotactl.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
rctl_add_rule.2 rctl_add_rule(2): fix manlint warnings 2017-05-23 07:32:57 +00:00
read.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
read.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
readlink.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
readv.c Add missing includes to eliminate -Wmissing-prototypes warnings 2015-09-20 03:45:57 +00:00
reboot.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
recv.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
recvfrom.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
recvmsg.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
rename.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
revoke.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
rfork.2
rmdir.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
rtprio.2 use .Mt to mark up email addresses consistently (part4) 2014-06-23 08:25:03 +00:00
sched_get_priority_max.2
sched_setparam.2
sched_setscheduler.2 Various mdoc fixes and a few EOL whitespace removals. 2014-12-21 12:36:36 +00:00
sched_yield.2
sctp_generic_recvmsg.2
sctp_generic_sendmsg.2
sctp_peeloff.2
select.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
select.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
semctl.2
semget.2 semget(2): Add missing [EINVAL] conditions. 2016-02-07 21:25:08 +00:00
semop.2
send.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sendfile.2 Add flag SF_USER_READAHEAD to sendfile(2). When specified, the syscall won't 2016-11-17 21:36:18 +00:00
sendmsg.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
sendto.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
setcontext.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
setfib.2 Don't end up manpage titles with a full stop. 2017-05-24 21:02:53 +00:00
setgroups.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setpgid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setregid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setresuid.2 Remove useless comment. 2015-02-07 13:11:45 +00:00
setreuid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setsid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
setuid.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
shm_open.2 Mention sendfile(2) by popular demand. 2017-01-20 17:29:59 +00:00
shmat.2
shmctl.2 Change the default setting of kern.ipc.shm_allow_removed from 0 to 1. 2015-10-10 09:29:47 +00:00
shmget.2
shutdown.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigaction.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigaction.c Switch libc from using _sig{procmask,action,suspend} symbols, which 2015-08-29 14:25:01 +00:00
sigaltstack.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigpending.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigprocmask.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigprocmask.c Switch libc from using _sig{procmask,action,suspend} symbols, which 2015-08-29 14:25:01 +00:00
sigqueue.2 Provide a freebsd32 implementation of sigqueue() 2017-05-05 18:49:39 +00:00
sigreturn.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigstack.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigsuspend.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sigsuspend.c Switch libc from using _sig{procmask,action,suspend} symbols, which 2015-08-29 14:25:01 +00:00
sigtimedwait.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
sigwait.2 Update some signal man pages for multithreading. 2013-09-06 09:08:40 +00:00
sigwait.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
sigwaitinfo.2 Various mdoc fixes and a few EOL whitespace removals. 2014-12-21 12:36:36 +00:00
sigwaitinfo.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
socket.2 Remove an inaccuracy from socket.2. 2017-06-10 21:07:55 +00:00
socketpair.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
stat.2 Remove redundant wording, minor edits for clarity. 2017-06-23 18:38:27 +00:00
stat.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
statfs.2 Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
statfs.c Forward compatibility for ino64. 2017-06-23 18:06:20 +00:00
swapcontext.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
swapon.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
Symbol.map Add abstime kqueue(2) timers and expand struct kevent members. 2017-06-17 00:57:26 +00:00
symlink.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sync.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sysarch.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
syscall.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
thr_exit.2 thr_*(2): Add xrefs to what libthr implements using each syscall. 2016-06-01 21:58:13 +00:00
thr_kill.2 thr_*(2): Add xrefs to what libthr implements using each syscall. 2016-06-01 21:58:13 +00:00
thr_new.2 Improve errno documentation in pthread_create(3) and thr_new(2) 2016-06-03 14:30:32 +00:00
thr_self.2 thr_*(2): Add xrefs to what libthr implements using each syscall. 2016-06-01 21:58:13 +00:00
thr_set_name.2 thr_set_name(): silently truncate the given name as needed 2016-12-03 01:14:21 +00:00
thr_suspend.2 Reword the statement. 2016-09-30 16:02:25 +00:00
thr_wake.2 Document thr_suspend(2) and thr_wake(2). 2016-09-26 08:18:34 +00:00
timer_create.2 Add documentation for the sigevent structure. 2016-07-15 15:12:56 +00:00
timer_delete.2
timer_settime.2
trivial-vdso_tc.c Implement userspace gettimeofday(2) with HPET timecounter. 2016-08-17 09:52:09 +00:00
truncate.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
umask.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
undelete.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
unlink.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
utimensat.2 libc: Remove futimens() and utimensat() compat stubs. 2017-06-07 21:21:14 +00:00
utimes.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
utrace.2 mdoc: sort Xr 2016-01-18 20:21:38 +00:00
uuidgen.2
vfork.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
wait4.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
wait6.c Make wait6(2), waitid(3) and ppoll(2) cancellation points. The 2015-04-18 21:35:41 +00:00
wait.2 pdwait4(2): Remove documentation of vaporware 2017-06-17 17:32:40 +00:00
write.2 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
write.c Fix known issues which blow up the process after dlopen("libthr.so") 2015-01-03 18:38:46 +00:00
writev.c Add missing includes to eliminate -Wmissing-prototypes warnings 2015-09-20 03:45:57 +00:00