Commit Graph

344 Commits

Author SHA1 Message Date
Ed Schouten
733ba7f881 Merge pipes and socket pairs.
Now that CloudABI's sockets API has been changed to be addressless and
only connected socket instances are used (e.g., socket pairs), they have
become fairly similar to pipes. The only differences on CloudABI is that
socket pairs additionally support shutdown(), send() and recv().

To simplify the ABI, we've therefore decided to remove pipes as a
separate file descriptor type and just let pipe() return a socket pair
of type SOCK_STREAM. S_ISFIFO() and S_ISSOCK() are now defined
identically.
2017-09-05 07:46:45 +00:00
John Baldwin
39a3a4386a Decode pathconf() names, *at() flags, and sysarch() numbers in libsysdecode.
Move tables that were previously in truss over to libsysdecode.  truss
output is unchanged, but kdump has been updated to decode these fields.
In addition, sysdecode_sysarch_number() should support all platforms
whereas the old table in truss only supported x86.
2017-09-04 05:34:36 +00:00
John Baldwin
13e5e6b616 Decode signal information returned by system calls.
Specifically, decode the siginfo structure returned by sigtimedwait(),
sigwaitinfo(), and wait6().  While here, also decode the signal number
returned in the second argument to sigwait().
2017-08-30 15:45:23 +00:00
John Baldwin
3cc32ea655 Trim stale prototype for ioctlname(). 2017-08-30 15:32:47 +00:00
Ed Schouten
b53b978a6c Complete the CloudABI networking refactoring.
Now that all of the packaged software has been adjusted to either use
Flower (https://github.com/NuxiNL/flower) for making incoming/outgoing
network connections or can have connections injected, there is no longer
need to keep accept() around. It is now a lot easier to write networked
services that are address family independent, dual-stack, testable, etc.

Remove all of the bits related to accept(), but also to
getsockopt(SO_ACCEPTCONN).
2017-08-30 07:30:06 +00:00
John Baldwin
ff577cb645 Decode extra signal information for caught signals.
Decode fields from the siginfo_t stored in the PT_LWPINFO structure when a
signal is caught by a traced process.  This includes the signal code
(si_code) as well as additional members such as si_addr, si_pid, etc.
2017-08-28 02:42:20 +00:00
John Baldwin
d86cddf0f0 Decode arguments passed to thr_set_name().
MFC after:	1 month
2017-08-25 19:06:36 +00:00
Ed Schouten
8212ad9a99 Sync CloudABI compatibility against the latest upstream version (v0.13).
With Flower (CloudABI's network connection daemon) becoming more
complete, there is no longer any need for creating any unconnected
sockets. Socket pairs in combination with file descriptor passing is all
that is necessary, as that is what is used by Flower to pass network
connections from the public internet to listening processes.

Remove all of the kernel bits that were used to implement socket(),
listen(), bindat() and connectat(). In principle, accept() and
SO_ACCEPTCONN may also be removed, but there are still some consumers
left.

Obtained from:	https://github.com/NuxiNL/cloudabi
MFC after:	1 month
2017-08-25 11:01:39 +00:00
Ed Schouten
cea9310d4e Upgrade to the latest sources generated from the CloudABI specification.
The CloudABI specification has had some minor changes over the last half
year. No substantial features have been added, but some features that
are deemed unnecessary in retrospect have been removed:

- mlock()/munlock():

  These calls tend to be used for two different purposes: real-time
  support and handling of sensitive (cryptographic) material that
  shouldn't end up in swap. The former use case is out of scope for
  CloudABI. The latter may also be handled by encrypting swap.

  Removing this has the advantage that we no longer need to worry about
  having resource limits put in place.

- SOCK_SEQPACKET:

  Support for SOCK_SEQPACKET is rather inconsistent across various
  operating systems. Some operating systems supported by CloudABI (e.g.,
  macOS) don't support it at all. Considering that they are rarely used,
  remove support for the time being.

- getsockname(), getpeername(), etc.:

  A shortcoming of the sockets API is that it doesn't allow you to
  create socket(pair)s, having fake socket addresses associated with
  them. This makes it harder to test applications or transparently
  forward (proxy) connections to them.

  With CloudABI, we're slowly moving networking connectivity into a
  separate daemon called Flower. In addition to passing around socket
  file descriptors, this daemon provides address information in the form
  of arbitrary string labels. There is thus no longer any need for
  requesting socket address information from the kernel itself.

This change also updates consumers of the generated code accordingly.
Even though system calls end up getting renumbered, this won't cause any
problems in practice. CloudABI programs always call into the kernel
through a kernel-supplied vDSO that has the numbers updated as well.

Obtained from:	https://github.com/NuxiNL/cloudabi
2017-07-26 06:57:15 +00:00
Edward Tomasz Napierala
8fb164a64e Make truss(1) cross-reference dtrace(1) and bump .Dd.
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-07-21 13:58:51 +00:00
Edward Tomasz Napierala
279e48d5be Use more usual formatting for the EXAMPLES section of truss(1).
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-07-21 13:50:59 +00:00
Mark Johnston
75a14d2220 Decode FreeBSD11 fstatat calls. 2017-07-19 23:34:28 +00:00
Warner Losh
1b224b09e9 Sort the compat11.* syscalls I added. Remove duplicate compat11.stat.
Submitted by: jhb@
2017-06-26 22:48:04 +00:00
Warner Losh
8207f12d6a Decode FreeBSD 11 compat stat, fstat and lstat calls. 2017-06-23 18:06:46 +00:00
Konstantin Belousov
2b34e84335 Add abstime kqueue(2) timers and expand struct kevent members.
This change implements NOTE_ABSTIME flag for EVFILT_TIMER, which
specifies that the data field contains absolute time to fire the
event.

To make this useful, data member of the struct kevent must be extended
to 64bit.  Using the opportunity, I also added ext members.  This
changes struct kevent almost to Apple struct kevent64, except I did
not changed type of ident and udata, the later would cause serious API
incompatibilities.

The type of ident was kept uintptr_t since EVFILT_AIO returns a
pointer in this field, and e.g. CHERI is sensitive to the type
(discussed with brooks, jhb).

Unlike Apple kevent64, symbol versioning allows us to claim ABI
compatibility and still name the new syscall kevent(2).  Compat shims
are provided for both host native and compat32.

Requested by:	bapt
Reviewed by:	bapt, brooks, ngie (previous version)
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D11025
2017-06-17 00:57:26 +00:00
John Baldwin
a4110f9ffa Decode arguments to sched_* family of system calls.
This includes decoding both scheduler policy constants and the sched_param
structure for sched_get_priority_max(), sched_get_priority_min(),
sched_getparam(), sched_getscheduler(), sched_rr_get_interval(),
sched_setparam(), and sched_setscheduler().
2017-06-16 20:03:09 +00:00
John Baldwin
3cd40bc360 Decode arguments to rtprio() and rtprio_thread(). 2017-06-10 01:32:35 +00:00
John Baldwin
4152441f44 Decode the 'howto' argument to reboot(). 2017-06-10 01:22:40 +00:00
John Baldwin
dd0c462cf5 Decode the arguments to quotactl(). 2017-06-10 00:53:00 +00:00
John Baldwin
5ac1c7ac34 Decode the arguments to ptrace().
This does not decode structures returned by ptrace().
2017-06-10 00:45:07 +00:00
John Baldwin
ad419d3377 Decode arguments to getpriority() and setpriority(). 2017-06-10 00:37:02 +00:00
John Baldwin
114aeee03b Decode arguments passed to msync(). 2017-06-08 08:10:57 +00:00
John Baldwin
8acc8e78ea Decode flags passed to mount(), nmount(), and unmount(). 2017-06-08 08:07:51 +00:00
John Baldwin
94bde7556c Decode arguments to mlock(), mlockall(), and munlock(). 2017-06-08 04:50:50 +00:00
John Baldwin
2d9c998859 Decode arguments to minherit(). 2017-06-08 04:45:13 +00:00
John Baldwin
26606dcaa7 Decode arguments passed to extended attribute related system calls.
The cmd argument passed to extattrctl() is not decoded as a string constant
but is just printed in hex.  The value is filesystem-specific but in
practice is only used with UFS1 filesystems.
2017-06-08 04:31:15 +00:00
John Baldwin
7ce44f08f5 Decode arguments to ACL related system calls.
This only decodes the raw arguments but not the contents of the struct acl
objects.
2017-06-08 03:51:17 +00:00
John Baldwin
b60a095b93 Decode arguments to dup, dup2, getdirentries, pread, and pwrite.
- dup and dup2 print fd arguments in decimal.
- pread and pwrite are similar to read and write with the addition of the
  file offset.
- getdirentries displays the output entries as a string for now and also
  prints the value returned in *basep.  Eventually the buffer for
  getdirentries should perhaps be decoded as an array of dirent
  structures.

PR:		214885
Submitted by:	Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM>
2017-06-05 05:25:50 +00:00
John Baldwin
ee8aa41dca Decode the 'who' argument passed to getrusage().
Add a new sysdecode_getrusage_who() which decodes the RUSAGE_* constant
passed as the first argument to getrusage().  Use this function in both
kdump and truss to decode the first argument to getrusage().

PR:		215448
Submitted by:	Anton Yuzhaninov <citrin+pr@citrin.ru>
MFC after:	1 month
2017-06-03 14:22:15 +00:00
John Baldwin
ebb2cc40d1 Decode the argument passed to cap_getmode().
The returned integer value is output.
2017-06-02 22:35:18 +00:00
John Baldwin
7136a1d97a Decode the arguments passed to __cap_rights_get() and cap_rights_limit().
Submitted by:	tobik
2017-06-02 13:33:50 +00:00
Michael Tuexen
738a93a461 Improve the decoding of the third argument of the socket() call.
Decoding of the third argument depends on the first one. For doing this,
add a corresponding function to libsysdecode.

Thanks to jhb@ for suggesting this.
2017-05-25 14:27:54 +00:00
Michael Tuexen
c0b72375d8 Add support for sctp_generic_sendmsg() and sctp_generic_recvmsg(). 2017-05-03 16:03:33 +00:00
Michael Tuexen
fca08fe6a2 Add support for sendmsg() and recvmsg(). 2017-05-03 12:26:16 +00:00
Michael Tuexen
8b429b6569 Decode the fourth argument of sendto and recvfrom call. 2017-05-03 12:23:58 +00:00
Michael Tuexen
832af45715 Add support for [gs]etsockopt(). 2017-05-03 12:18:09 +00:00
Michael Tuexen
ecac235bb0 Decode the third argument of socket(). 2017-05-03 09:23:13 +00:00
Michael Tuexen
58227c6061 Add Socklent for handling args of type socklen_t. 2017-05-03 09:20:36 +00:00
Michael Tuexen
e8d2c81d5b Add support for listen() call. 2017-05-03 09:09:34 +00:00
John Baldwin
a776eeafdc Improve decoding of last arguments to ioctl() and sendto().
Decode the last argument to ioctl() as a pointer rather than an int.
Eventually this could use 'int' for the _IOWINT() case and pointers for
all others.

The last argument to sendto() is a socklen_t value, not a pointer.
2017-03-19 00:36:29 +00:00
John Baldwin
98fdbeec47 Decode arguments to madvise(). 2017-03-19 00:31:21 +00:00
John Baldwin
e261fb2a5b Add a Sizet type for 'size_t' values and use it instead of Int.
Various size_t arguments were previously decoded as Int values instead
which would have truncated values above 2^31 on 64-bit systems.
2017-03-19 00:27:07 +00:00
John Baldwin
94e854c517 Decode arguments passed to kldsym() and kldunloadf().
This does not currently decode the kld_sym_lookup structure passed to
kldsym().
2017-03-18 19:59:21 +00:00
John Baldwin
ab43bedcce Decode arguments passed to getfsstat().
Note that this does not yet decode the statfs structures returned by
getfsstat().
2017-03-18 18:31:45 +00:00
John Baldwin
dd92181f60 Decode flock() operation. 2017-03-18 18:26:56 +00:00
John Baldwin
27459358ed Decode file flags passed to *chflags*().
While here, decode arguments passed to fchflags() and chflagsat().
2017-03-18 18:21:41 +00:00
John Baldwin
d2a9748593 Decode arguments passed to posix_fadvise(). 2017-03-18 18:12:09 +00:00
John Baldwin
bed418c8bd Decode the arguments passed to cap_fcntls_get() and cap_fcntls_limit(). 2017-03-18 18:10:02 +00:00
John Baldwin
c05cc0d6c8 Automate the handling of QUAD_ALIGN and QUAD_SLOTS.
Previously, the offset in a system call description specified the
array index of the start of a system call argument.  For most system
call arguments this was the same as the index of the argument in the
function signature.  64-bit arguments (off_t and id_t values) passed
on 32-bit platforms use two slots in the array however.  This was
handled by adding (QUAD_SLOTS - 1) to the slot indicies of any
subsequent arguments after a 64-bit argument (though written as ("{
Quad, 1 }, { Int, 1 + QUAD_SLOTS }" rather than "{ Quad, 1 }, { Int, 2
+ QUAD_SLOTS - 1 }").  If a system call contained multiple 64-bit
arguments (such as posix_fadvise()), then additional arguments would
need to use 'QUAD_SLOTS * 2' but remember to subtract 2 from the
initial number, etc.  In addition, 32-bit powerpc requires 64-bit
arguments to be 64-bit aligned, so if the effective index in the array
of a 64-bit argument is odd, it needs QUAD_ALIGN added to the current
and any subsequent slots.  However, if the effective index in the
array of a 64-bit argument was even, QUAD_ALIGN was omitted.

This approach was messy and error prone.  This commit replaces it with
automated pre-processing of the system call table to do fixups for
64-bit argument offsets.  The offset in a system call description now
indicates the index of an argument in the associated function call's
signature.  A fixup function is run against each decoded system call
description during startup on 32-bit platforms.  The fixup function
maintains an 'offset' value which holds an offset to be added to each
remaining system call argument's index.  Initially offset is 0.  When
a 64-bit system call argument is encountered, the offset is first
aligned to a 64-bit boundary (only on powerpc) and then incremented to
account for the second argument slot used by the argument.  This
modified 'offset' is then applied to any remaining arguments.  This
approach does require a few things that were not previously required:

1) Each system call description must now list arguments in ascending
   order (existing ones all do) without using duplicate slots in the
   register array.  A new assert() should catch any future
   descriptions which violate this rule.

2) A system call description is still permitted to omit arguments
   (though none currently do), but if the call accepts 64-bit
   arguments those cannot be omitted or incorrect results will be
   displated on 32-bit systems.

Tested on:	amd64 and i386
2017-03-15 23:08:11 +00:00
John Baldwin
64f4703b9b Remove duplicate argument from linux_stat64() decoding. 2017-03-15 22:39:15 +00:00