Commit Graph

466 Commits

Author SHA1 Message Date
John Baldwin
0804ed5acc Regen. 2004-02-04 22:00:44 +00:00
John Baldwin
c3b612d935 The following compat syscalls are now mpsafe: linux_getrlimit(),
linux_setrlimit(), linux_old_getrlimit(), osf1_getrlimit(),
osf1_setrlimit(), svr4_sys_ulimit(), svr4_sys_setrlimit(),
svr4_sys_getrlimit(), svr4_sys_setrlimit64(), svr4_sys_getrlimit64(),
ibcs2_sysconf(), and ibcs2_ulimit().
2004-02-04 21:57:00 +00:00
John Baldwin
91d5354a2c Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
David Xu
9b778a1611 Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.
2004-01-03 23:31:29 +00:00
David Xu
a30ec4b99c Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.

Reviewed by: deischen, dfr
2004-01-03 02:02:26 +00:00
Bruce Evans
ff22c670d9 Sorted includes. Removed duplicates exposed by this. 2003-12-29 06:51:10 +00:00
Peter Wemm
bdbbbb1bb9 GC unused 'syshide' override to /dev/null. This was here to disable
the output of the namespc column.  Its functionality was removed some time
ago, but the overrides and the namespc column remained.
2003-12-24 00:32:07 +00:00
Peter Wemm
ff7a52b4b5 Regen (should be a NOP except for rcsid changes) 2003-12-23 03:55:06 +00:00
Peter Wemm
eca6e6472d GC unused third namespace column. 2003-12-23 03:54:40 +00:00
Peter Wemm
9b68618df0 Add an additional field to the elf brandinfo structure to support
quicker exec-time replacement of the elf interpreter on an emulation
environment where an entire /compat/* tree isn't really warranted.
2003-12-23 02:42:39 +00:00
Maxim Sobolev
d09c47acd9 Pull latest changes from OpenBSD:
- improve sysinfo(2) syscall;
- add dummy fadvise64(2) syscall;
- add dummy *xattr(2) family of syscalls;
- add protos for the syscalls 222-225, 238-249 and 253-267;
- add exit_group(2) syscall, which is currently just wired to exit(2).

Obtained from:  OpenBSD
MFC after:      2 weeks
2003-11-16 15:07:10 +00:00
John Baldwin
fab73bc221 Regen. 2003-11-07 21:36:35 +00:00
John Baldwin
572e11ac18 Sync up MP safe flags with global syscalls.master for the first time. This
includes read(), write(), close(), linux_setuid16(), linux_getuid16(),
linux_pause(), linux_nice(), linux_kill(), dup(), linux_pipe(),
linux_setgid16(), linux_getgid16(), linux_signal(), linux_geteuid16(),
linux_getegid16(), acct(), setpgid(), umask(), dup2(), getppid(),
getpgrp(), setsid(), linux_sigaction(), linux_sgetmask(), linux_ssetmask(),
linux_setreuid16(), linux_setregid16(), linux_sigsuspend(), getrusage(),
gettimeofday(), linux_getgroups16(), linux_setgroups16(), getpriority(),
setpriority(), linux_sigreturn(), linux_clone(), linux_sigprocmask(),
linux_getsid(), mlock(), munlock(), mlockall(), munlockall(),
sched_setparam(), sched_getparam(), linux_sched_setscheduler(),
linux_sched_getscheduler(), linux_sched_get_priority_max(),
linux_sched_get_priority_min(), sched_rr_get_interval(),
linux_setresuid16(), linux_getresuid16(), linux_setresgid16(),
linux_getresgid16(), linux_rt_sigaction(), linux_rt_sigprocmask(),
linux_rt_sigsuspend(), geteuid(), getegid(), setreuid(), setregid(),
linux_getgroups(), linux_setgroups(), setresuid(), getresuid(),
setresgid(), getresgid(), setuid(), and setgid().
2003-11-07 21:36:14 +00:00
Peter Wemm
c460ac3a00 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit
systems where the data/stack/etc limits are too big for a 32 bit process.

Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c.

Supply an ia32_fixlimits function.  Export the clip/default values to
sysctl under the compat.ia32 heirarchy.

Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max
value rather than the sysctl tweakable variable.  This allows mmap to
place mappings at sensible locations when limits have been reduced.

Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same
method as mmap(0, ...) now does.

Note that we cannot remove all references to the sysctl tweakable
maxdsiz etc variables because /etc/login.conf specifies a datasize
of 'unlimited'.  And that causes exec etc to fail since it can no
longer find space to mmap things.
2003-09-25 01:10:26 +00:00
Bruce Evans
2cf50c62a6 Restored non-egregious casts so that this file compiles on i386's with
64-bit longs again.
2003-09-07 13:23:45 +00:00
David Xu
0e2a4d3aeb Rename P_THREADED to P_SA. P_SA means a process is using scheduler
activations.
2003-06-15 00:31:24 +00:00
David E. O'Brien
27e0099c4a Use __FBSDID(). 2003-06-02 16:56:40 +00:00
John Baldwin
90af4afacb - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
Matthew N. Dodd
598d45be84 Provide exec_linux_setregs() to override exec_setregs().
Linux initializes %gs to 0.  Mimic this behavior.

Submitted by:	 Christian Zander <zander@minion.de>
Reviewed by:	 jake
Approved by:	 re
2003-05-11 21:51:11 +00:00
John Baldwin
eeec6bab2e Prefer the proc lock to sched_lock when testing PS_INMEM now that it is
safe to do so.
2003-04-22 20:01:56 +00:00
John Baldwin
9eb78fcfd9 Synchronize the two linux_clone() implementations which includes a few
minor cleanups in both.
2003-04-18 20:54:41 +00:00
John Baldwin
e5567180fb Don't drop the proc lock just to reacquire it after a few simple assignment
statements.  Just hold the lock the entire time.
2003-04-17 22:18:07 +00:00
John Baldwin
f265002902 Sync up with changes to ptrace() and use P_SHOULDSTOP instead of
a duplicate P_TRACED check.

Submitted by:	marcel
2003-04-15 16:29:39 +00:00
Jeff Roberson
4093529dee - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
Jeff Roberson
1bf4700bff - Change trapsignal() to accept a thread and not a proc.
- Change all consumers to pass in a thread.

Right now this does not cause any functional changes but it will be important
later when signals can be delivered to specific threads.
2003-03-31 22:02:38 +00:00
John Baldwin
0f9d6538bb Add missing includes from previous commit.
Reported by:	des
2003-03-27 18:18:35 +00:00
John Baldwin
35eb8c5aa2 Add a cleanup function to destroy the osname_lock and call it on module
unload.

Submitted by:	gallatin
Reported by:	Martin Karlsson <mk-freebsd@bredband.net>
2003-03-26 18:29:44 +00:00
Matthew N. Dodd
91d631e536 Print the return value from mmap() in the DEBUG case. 2003-03-25 20:02:55 +00:00
John Baldwin
43cf129c99 Sync up linux and svr compat elf fixup functions for exec(). These
functions are now all basically identical except that alpha linux uses
Elf64 arguments and svr4 and i386 linux use Elf32.  The fixups include
changing the first argument to be a register_t ** to match the prototype
for fixup functions, asserting that the process in the image_params struct
is always curproc and removing unnecessary locking to read credentials as a
result, and a few style fixes.
2003-03-21 19:49:34 +00:00
Poul-Henning Kamp
b4b138c27f Including <sys/stdint.h> is (almost?) universally only to be able to use
%j in printfs, so put a newsted include in <sys/systm.h> where the printf
prototype lives and save everybody else the trouble.
2003-03-18 08:45:25 +00:00
Dag-Erling Smørgrav
1d062e2be8 Clean up whitespace and remove register keyword. 2003-03-03 09:17:12 +00:00
Dag-Erling Smørgrav
4b7ef73d71 More caddr_t removal, in conjunction with copy{in,out}(9) this time.
Also clean up some egregious casts and incorrect use of sizeof.
2003-03-03 09:14:26 +00:00
Alexander Kabaev
ba873f4c18 Correctly map SIGSYS signal to/from Linux.
Submitted by:   "Georg-W. Koltermann" <g.w.k@web.de>
2003-02-24 16:16:45 +00:00
Tim J. Robbins
8fcac23f33 Regen from syscalls.master 1.50. 2003-02-20 13:34:15 +00:00
Tim J. Robbins
c7edd68c94 Mark linux_getpid(), linux_getuid() and linux_getgid() as MPSAFE. 2003-02-20 13:32:48 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Tim J. Robbins
d97ccc7e54 Mark linux_sigpending() as MPSAFE. 2003-02-16 02:31:05 +00:00
Tim J. Robbins
a5ea48d458 Regen from syscalls.master 1.49. 2003-02-16 02:28:35 +00:00
Hajimu UMEMOTO
ca26842e2a Add IPv6 support for Linuxlator.
Reviewed by:	dwmalone
MFC after:	10 days
2003-02-03 17:43:20 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Marcel Moolenaar
99d45c5f9d bzero() the sigframe before we fill it. This was not done at all in
linux_rt_sendsig() and only done for the fpstate in linux_sendsig().
2002-11-02 07:41:04 +00:00
Mark Murray
b07cd97ea8 Style(9). Make some function declarations consistent with the rest,
and remove some nearby extraneous {}'s.
2002-10-19 11:57:38 +00:00
Bruce Evans
b45bbfc36c Fixed syntax errors and printf format errors. 2002-10-12 13:48:21 +00:00
Maxim Sobolev
3ad9c842d2 - Add support for IPC_64 extensions into shmctl(2), semctl(2) and msgctl(2);
- add wrappers for mmap2(2) and ftruncate64(2) system calls;
- don't spam console with printf's when VFAT_READDIR_BOTH ioctl(2) is invoked;
- add support for SOUND_MIXER_READ_STEREODEVS ioctl(2);
- make msgctl(IPC_STAT) and IPC_SET actually working by converting from
  BSD msqid_ds to Linux and vice versa;
- properly return EINVAL if semget(2) is called with nsems being negative.

Reviewed by:	marcel
Approved by:	marcel
Tested with:	LSB runtime test
2002-10-11 11:43:09 +00:00
Scott Long
316ec49abd Some kernel threads try to do significant work, and the default KSTACK_PAGES
doesn't give them enough stack to do much before blowing away the pcb.
This adds MI and MD code to allow the allocation of an alternate kstack
who's size can be speficied when calling kthread_create.  Passing the
value 0 prevents the alternate kstack from being created.  Note that the
ia64 MD code is missing for now, and PowerPC was only partially written
due to the pmap.c being incomplete there.
Though this patch does not modify anything to make use of the alternate
kstack, acpi and usb are good candidates.

Reviewed by:	jake, peter, jhb
2002-10-02 07:44:29 +00:00
Jonathan Mini
044af7c357 Back out last commit. Linux uses the old 4.3BSD sockaddr format. 2002-09-24 07:03:01 +00:00
Jonathan Mini
d7f94a7a0e Don't use compatability syscall wrappers in emulation code.
This is needed for the COMPAT_FREEBSD3 option split.

Reviewed by:	alfred, jake
2002-09-23 06:17:54 +00:00
Jake Burkholder
05ba50f522 Use the fields in the sysentvec and in the vm map header in place of the
constants VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS, USRSTACK and PS_STRINGS.
This is mainly so that they can be variable even for the native abi, based
on different machine types.  Get stack protections from the sysentvec too.
This makes it trivial to map the stack non-executable for certain abis, on
machines that support it.
2002-09-21 22:07:17 +00:00
Bruce Evans
e9a6d3b44c Removed unused includes. Sorted includes. This is part of removing
includes of <sys/user.h> for its pollution only.  <sys/user.h> wasn't
even used for its pollution here.
2002-09-15 17:45:10 +00:00
Julian Elischer
71fad9fdee Completely redo thread states.
Reviewed by:	davidxu@freebsd.org
2002-09-11 08:13:56 +00:00