Commit Graph

2119 Commits

Author SHA1 Message Date
jhb
148355cbb6 Move the 32-bit compatible procfs types from freebsd32.h to <sys/procfs.h>
and export them to userland.
- Define __HAVE_REG32 on platforms that define a reg32 structure and check
  for this in <sys/procfs.h> to control when to export prstatus32, etc.
- Add prstatus32_t and prpsinfo32_t typedefs for the 32-bit structures.
  libbfd looks for these types, and having them fixes 'gcore' in gdb of a
  32-bit process on a 64-bit platform.
- Use the structure definitions from <sys/procfs.h> in gcore's elf32 core
  dump code instead of duplicating the definitions.

Differential Revision:	https://reviews.freebsd.org/D2142
Reviewed by:	kib, nathanw (powerpc bits)
MFC after:	1 week
2015-04-08 16:30:45 +00:00
trasz
48a3f6fc28 Remove unused code.
Differential Revision:	https://reviews.freebsd.org/D2195
Reviewed by:	kib@, imp@
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-04-02 10:19:24 +00:00
mjg
054f9cab59 cred: add proc_set_cred helper
The goal here is to provide one place altering process credentials.

This eases debugging and opens up posibilities to do additional work when such
an action is performed.
2015-03-16 00:10:03 +00:00
jilles
6ad32c1c79 Run make sysent. 2015-01-23 21:08:24 +00:00
jilles
67db24d0f2 Add futimens and utimensat system calls.
The core kernel part is patch file utimes.2008.4.diff from
pluknet@FreeBSD.org. I updated the code for API changes, added the manual
page and added compatibility code for old kernels. There is also audit and
Capsicum support.

A new UTIME_* constant might allow setting birthtimes in future.

Differential Revision:	https://reviews.freebsd.org/D1426
Submitted by:	pluknet (partially)
Reviewed by:	delphij, pluknet, rwatson
Relnotes:	yes
2015-01-23 21:07:08 +00:00
kib
aa0ac99391 Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger
attachment to the process.  Note that the command is not intended to
be a security measure, rather it is an obfuscation feature,
implemented for parity with other operating systems.

Discussed with:	jilles, rwatson
Man page fixes by:	rwatson
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-01-18 15:13:11 +00:00
kib
631f2ce1dd fcntl F_O{GET,SET}LK take pointer as the arg, handle them properly for
compat32.

Reported and tested by:	Alex Tutubalin <lexa@lexa.ru>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2015-01-15 10:43:58 +00:00
dchagin
6996603344 Regen for r276654 (__getcwd()). 2015-01-04 10:40:23 +00:00
dchagin
e777b160fa Indeed, instead of hiding the kern___getcwd() bug by bogus cast
in r276564, change path type to char * (pathnames are always char *).
And remove bogus casts of malloc().
kern___getcwd() internally doesn't actually use or support u_char *
paths, except to copy them to a normal char * path.

These changes are not visible to libc as libc/gen/getcwd.c misdeclares
__getcwd() as taking a plain char * path.

While here remove _SYS_SYSPROTO_H_ for __getcwd() syscall as
we always have sysproto.h.

Pointed out by:	bde

MFC after:	1 week
2015-01-04 10:34:02 +00:00
dchagin
09e6c22e46 Cast *path to silence clang -Wpointer-sign warning.
MFC after:	1 week
2015-01-02 19:29:32 +00:00
dchagin
49eaa137e5 Remove Giant from linux_getcwd() due to VFS is MPSAFE now.
Discussed with:	kib
MFC after:	1 week
2015-01-02 18:36:08 +00:00
dchagin
236e47c874 Fix Clang -Wpointer-sign warnings.
MFC after:	1 week
2015-01-01 20:53:38 +00:00
dchagin
2e64d69349 Fix Clang warning: passing 'unsigned int *' to parameter of type 'int *' converts between pointers to integer types with different sign.
MFC after:	1 week
2015-01-01 19:57:24 +00:00
gleb
5c99f46b3b Adjust printf format specifiers for dev_t and ino_t in kernel.
ino_t and dev_t are about to become uint64_t.

Reviewed by:	kib, mckusick
2014-12-17 07:27:19 +00:00
kib
c014fd46ec Add a facility for non-init process to declare itself the reaper of
the orphaned descendants.  Base of the API is modelled after the same
feature from the DragonFlyBSD.

Requested by:	bapt
Reviewed by:	jilles (previous version)
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
2014-12-15 12:01:42 +00:00
kib
11cee2ecf7 The process spin lock currently has the following distinct uses:
- Threads lifetime cycle, in particular, counting of the threads in
  the process, and interlocking with process mutex and thread lock.
  The main reason of this is that turnstile locks are after thread
  locks, so you e.g. cannot unlock blockable mutex (think process
  mutex) while owning thread lock.

- Virtual and profiling itimers, since the timers activation is done
  from the clock interrupt context.  Replace the p_slock by p_itimmtx
  and PROC_ITIMLOCK().

- Profiling code (profil(2)), for similar reason.  Replace the p_slock
  by p_profmtx and PROC_PROFLOCK().

- Resource usage accounting.  Need for the spinlock there is subtle,
  my understanding is that spinlock blocks context switching for the
  current thread, which prevents td_runtime and similar fields from
  changing (updates are done at the mi_switch()).  Replace the p_slock
  by p_statmtx and PROC_STATLOCK().

The split is done mostly for code clarity, and should not affect
scalability.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-26 14:10:00 +00:00
jhb
1671ac9155 Improve support for XSAVE with debuggers.
- Dump an NT_X86_XSTATE note if XSAVE is in use. This note is designed
  to match what Linux does in that 1) it dumps the entire XSAVE area
  including the fxsave state, and 2) it stashes a copy of the current
  xsave mask in the unused padding between the fxsave state and the
  xstate header at the same location used by Linux.
- Teach readelf() to recognize NT_X86_XSTATE notes.
- Change PT_GET/SETXSTATE to take the entire XSAVE state instead of
  only the extra portion. This avoids having to always make two
  ptrace() calls to get or set the full XSAVE state.
- Add a PT_GET_XSTATE_INFO which returns the length of the current
  XSTATE save area (so the size of the buffer needed for PT_GETXSTATE)
  and the current XSAVE mask (%xcr0).

Differential Revision:	https://reviews.freebsd.org/D1193
Reviewed by:	kib
MFC after:	2 weeks
2014-11-21 20:53:17 +00:00
kib
b4ef709604 Remove the no-at variants of the kern_xx() syscall helpers. E.g., we
have both kern_open() and kern_openat(); change the callers to use
kern_openat().

This removes one (sometimes two) levels of indirection and
consolidates arguments checks.

Reviewed by:	mckusick
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-11-13 18:01:51 +00:00
dchagin
c0a51053a4 Regen for r274462. 2014-11-13 05:28:06 +00:00
dchagin
162012051b Add the ppoll() system call.
Export kern_poll() needed by an upcoming Linuxulator change.

Differential Revision:	https://reviews.freebsd.org/D1133
Reviewed by:	kib, wblock
MFC after:	1 month
2014-11-13 05:26:14 +00:00
glebius
b8af75c693 Fix build. 2014-11-11 22:08:18 +00:00
glebius
53273c84d0 Remove SF_KQUEUE code. This code was developed at Netflix, but was not
ever used.  It didn't go into stable/10, neither was documented.
It might be useful, but we collectively decided to remove it, rather
leave it abandoned and unmaintained.  It is removed in one single
commit, so restoring it should be easy, if anyone wants to reopen
this idea.

Sponsored by:	Netflix
2014-11-11 20:32:46 +00:00
imp
162751703e These don't belong in the modules directory. 2014-11-06 16:52:51 +00:00
kib
ad7bf17db7 Replace some calls to fuword() by fueword() with proper error checking.
Sponsored by:	The FreeBSD Foundation
Tested by:	pho
MFC after:	3 weeks
2014-10-28 15:28:20 +00:00
mjg
a9faac8f4b Avoid dynamic syscall overhead for statically compiled modules.
The kernel tracks syscall users so that modules can safely unregister them.

But if the module is not unloadable or was compiled into the kernel, there is
no need to do this.

Achieve this by adding SY_THR_STATIC_KLD macro which expands to SY_THR_STATIC
during kernel build and 0 otherwise.

Reviewed by:	kib (previous version)
MFC after:	2 weeks
2014-10-26 19:42:44 +00:00
hselasky
49c137f7be Fix multiple incorrect SYSCTL arguments in the kernel:
- Wrong integer type was specified.

- Wrong or missing "access" specifier. The "access" specifier
sometimes included the SYSCTL type, which it should not, except for
procedural SYSCTL nodes.

- Logical OR where binary OR was expected.

- Properly assert the "access" argument passed to all SYSCTL macros,
using the CTASSERT macro. This applies to both static- and dynamically
created SYSCTLs.

- Properly assert the the data type for both static and dynamic
SYSCTLs. In the case of static SYSCTLs we only assert that the data
pointed to by the SYSCTL data pointer has the correct size, hence
there is no easy way to assert types in the C language outside a
C-function.

- Rewrote some code which doesn't pass a constant "access" specifier
when creating dynamic SYSCTL nodes, which is now a requirement.

- Updated "EXAMPLES" section in SYSCTL manual page.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
2014-10-21 07:31:21 +00:00
adrian
9b44fe556b Update the ULE scheduler + thread and kinfo structs to use int for cpuid
rather than u_char.

To try and play nice with the ABI, the u_char CPU ID values are clamped
at 254.  The new fields now contain the full CPU ID, or -1 for no cpu.

Differential Revision:	D955
Reviewed by:	jhb, kib
Sponsored by:	Norse Corp, Inc.
2014-10-18 19:36:11 +00:00
marcel
005c9e3ebe Regenerate after r272823:
Move the SCTP syscalls to netinet with the rest of the SCTP code.

Submitted by:	Steve Kiernan <stevek@juniper.net>
Reviewed by:	tuexen, rrs
Obtained from:	Juniper Networks, Inc.
2014-10-09 15:19:35 +00:00
marcel
42d9d5479e Move the SCTP syscalls to netinet with the rest of the SCTP code. The
syscalls themselves are tightly coupled with the network stack and
therefore should not be in the generic socket code.

The following four syscalls have been marked as NOSTD so they can be
dynamically registered in sctp_syscalls_init() function:
  sys_sctp_peeloff
  sys_sctp_generic_sendmsg
  sys_sctp_generic_sendmsg_iov
  sys_sctp_generic_recvmsg

The syscalls are also set up to be dynamically registered when COMPAT32
option is configured.

As a side effect of moving the SCTP syscalls, getsock_cap needs to be
made available outside of the uipc_syscalls.c source file.  A proper
prototype has been added to the sys/socketvar.h header file.

API tests from the SCTP reference implementation have been run to ensure
compatibility. (http://code.google.com/p/sctp-refimpl/source/checkout)

Submitted by:	Steve Kiernan <stevek@juniper.net>
Reviewed by:	tuexen, rrs
Obtained from:	Juniper Networks, Inc.
2014-10-09 15:16:52 +00:00
kib
d972eee1e7 Fix fcntl(2) compat32 after r270691. The copyin and copyout of the
struct flock are done in the sys_fcntl(), which mean that compat32 used
direct access to userland pointers.

Move code from sys_fcntl() to new wrapper, kern_fcntl_freebsd(), which
performs neccessary userland memory accesses, and use it from both
native and compat32 fcntl syscalls.

Reported by:	jhibbits
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
2014-09-25 21:07:19 +00:00
mav
1d2330e15a Remake Linux' SOUND_MIXER_INFO IOCTL as a wrapper around new FreeBSD's one.
Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	3 days
2014-09-24 08:18:11 +00:00
sbruno
c738e0d253 Bump minimum linux compat version to support Centos6 ports updates for linux.
Update linux compat minimum revision to match linux-c6 now in ports.  This
is a candidate for 10.1 R as it matches the current state of supported
linux compat packages in the ports tree.

PR:		187786
Reviewed by:	xmj
MFC after:	2 days
Relnotes:	yes
2014-09-22 17:26:07 +00:00
glebius
94b048a2d0 Fix build on 32-bit machines.
Pointy hat to:	glebius
2014-09-18 20:29:17 +00:00
glebius
42586cabb8 - Use if_get_counter() to fetch ifnet statistics.
- Report IFCOUNTER_OQDROPS to linprocfs. Wasn't there before.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-09-18 16:44:28 +00:00
bz
122003e2ff Implement most of timer_{create,settime,gettime,getoverrun,delete}
for amd64/linux32.  Fix the entirely bogus (untested) version from
r161310 for i386/linux using the same shared code in compat/linux.

It is unclear to me if we could support more clock mappings but
the current set allows me to successfully run commercial
32bit linux software under linuxolator on amd64.

Reviewed by:		jhb
Differential Revision:	D784
MFC after:		3 days
Sponsored by:		DARPA, AFRL
2014-09-18 08:36:45 +00:00
mjg
4cf719a9ee Add missing proctree locking to fill_kinfo_proc consumers.
This fixes r270444.

Pointy hat:	mjg
Reported by:	many
MFC after:	1 week
2014-08-30 03:10:55 +00:00
mjg
ec92f2e61c Return real parent pid in kinfo (used by e.g. ps)
Add a separate field which exports tracer pid and add a new keyword
("tracer") for ps to display it.

This is a follow up to r270444.

Reviewed by:	kib
MFC after:	1 week
Relnotes:	yes
2014-08-28 08:41:11 +00:00
kib
1e11271b7e Regen. 2014-08-27 01:02:19 +00:00
kib
75f74b437b Fix handling of the third argument for fcntl(2). The native syscall
uses long for arg, which needs translation.

Discussed with and tested by:	mjg
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2014-08-27 01:02:02 +00:00
glebius
0236597739 All mbuf external free functions never fail, so let them be void.
Sponsored by:	Nginx, Inc.
2014-07-11 13:58:48 +00:00
marcel
9f28abd980 Remove ia64.
This includes:
o   All directories named *ia64*
o   All files named *ia64*
o   All ia64-specific code guarded by __ia64__
o   All ia64-specific makefile logic
o   Mention of ia64 in comments and documentation

This excludes:
o   Everything under contrib/
o   Everything under crypto/
o   sys/xen/interface
o   sys/sys/elf_common.h

Discussed at: BSDcan
2014-07-07 00:27:09 +00:00
hselasky
35b126e324 Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
gjb
fc21f40567 Revert r267961, r267973:
These changes prevent sysctl(8) from returning proper output,
such as:

 1) no output from sysctl(8)
 2) erroneously returning ENOMEM with tools like truss(1)
    or uname(1)
 truss: can not get etype: Cannot allocate memory
2014-06-27 22:05:21 +00:00
hselasky
bd1ed65f0f Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
2014-06-27 16:33:43 +00:00
mav
797781309b - Add support for SG_GET_SG_TABLESIZE IOCTL to report that we don't support
scatter/gather lists.
- Return error for still unsupported SG 3.x API read/write calls.

MFC after:	1 month
2014-06-04 12:05:47 +00:00
mav
cb97f6171b Overhaul CAM SG driver IOCTL interfaces.
Make it really work for native FreeBSD programs.  Before this it was broken
for years due to different number of pointer dereferences in Linux and
FreeBSD IOCTL paths, permanently returning errors to FreeBSD programs.
This change breaks the driver FreeBSD IOCTL ABI, making it more strict,
but since it was not working any way -- who bother.

Add shims for 32-bit programs on 64-bit host, translating the argument
of the SG_IO IOCTL for both FreeBSD and Linux ABIs.

With this change I was able to run 32-bit Linux sg3_utils tools and simple
32 and 64-bit FreeBSD test tools on both 32 and 64-bit FreeBSD systems.

MFC after:	1 month
2014-06-02 19:53:53 +00:00
dchagin
f38753151f Glibc was switched to the FUTEX_WAIT_BITSET op and CLOCK_REALTIME
flag has been added instead of FUTEX_WAIT to replace the FUTEX_WAIT
logic which needs to do gettimeofday() calls before the futex syscall
to convert the absolute timeout to a relative timeout.
Before this the CLOCK_MONOTONIC used by the FUTEX_WAIT_BITSET op.

When the FUTEX_CLOCK_REALTIME is specified the timeout is an absolute
time, not a relative time. Rework futex_wait to handle this.
On the side fix the futex leak in error case and remove useless
parentheses.

Properly calculate the timeout for the CLOCK_MONOTONIC case.

MFC after:	3 days
2014-05-31 14:58:53 +00:00
dchagin
1e378c6cc6 In r218101 I have not changed properly the futex syscall definition.
Some Linux futex ops atomically verifies that the futex address uaddr
(uval) contains the value val. Comparing signed uval and unsigned val
may lead to an unexpected result, mostly to a deadlock.

So copyin uaddr to an unsigned int to compare the parameters correctly.

While here change ktr records to print parameters in more readable format.

Tested by	eadler@

MFC after:	3 days
2014-05-28 05:57:35 +00:00
marcel
60f16a83d9 In freebsd32_sendmsg(), replace the call to sockargs() followed by a
call to freebsd32_convert_msg_in() with freebsd32_copyin_control() to
readin and convert in a single step. This makes it simpler to put all
the control messages in a single mbuf or mbuf cluster as per the
limitations imposed upon us by ip6_setpktopts().

The logic is as follows:
1.  Go over the array of control messages to determine overall size
    and include extra padding for proper alignment as we go.
2.  Get a mbuf or mbuf cluster as needed or fail if the overall
    (adjusted) size is larger than a cluster.
3.  Go over the array of control messages again, but now copy them
    into kernel space and into aligned offsets.
4.  Update the length of the control message to take padding between
    the header and the data into account (but not for padding added
    between one control message and the next).

Obtained from:	Juniper Networks, Inc.
MFC after:	1 week
2014-04-05 18:56:01 +00:00
imp
eebc91c3f0 Remove instances of variables that were set, but never used. gcc 4.9
warns about these by default.
2014-03-30 23:43:36 +00:00