1762 Commits

Author SHA1 Message Date
alc
256c63de28 Introduce exec_alloc_args(). The objective being to encapsulate the
details of the string buffer allocation in one place.

Eliminate the portion of the string buffer that was dedicated to storing
the interpreter name.  The pointer to the interpreter name can simply be
made to point to the appropriate argument string.

Reviewed by:	kib
2010-07-27 17:31:03 +00:00
kib
5d01c62502 Revert r210451, and the similar part of the r210431. The forward-declaration
for the enum tag when enum definition is not complete is not allowed by
C99, and is gcc extension.

Requested by:	stefanf
MFC after:	28 days
2010-07-26 12:52:44 +00:00
alc
02c0473d35 Change the order in which the file name, arguments, environment, and
shell command are stored in exec*()'s demand-paged string buffer.  For
a "buildworld" on an 8GB amd64 multiprocessor, the new order reduces
the number of global TLB shootdowns by 31%.  It also eliminates about
330k page faults on the kernel address space.

Change exec_shell_imgact() to use "args->begin_argv" consistently as
the start of the argument and environment strings.  Previously, it
would sometimes use "args->buf", which is the start of the overall
buffer, but no longer the start of the argument and environment
strings.  While I'm here, eliminate unnecessary passing of "&length"
to copystr(), where we don't actually care about the length of the
copied string.

Clean up the initialization of the exec map.  In particular, use the
correct size for an entry, and express that size in the same way that
is used when an entry is allocated.  The old size was one page too
large.  (This discrepancy originated in 2004 when I rewrote
exec_map_first_page() to use sf_buf_alloc() instead of the exec map
for mapping the first page of the executable.)

Reviewed by:	kib
2010-07-25 17:43:38 +00:00
kib
229b3b9c19 Remove the linux_exec_copyin_args(), freebsd32_exec_copyin_args() may
server as well. COMPAT_FREEBSD32 is a prerequisite for COMPAT_LINUX32.

Reviewed by:	alc
MFC after:	3 weeks
2010-07-23 21:30:33 +00:00
alc
0c709bf109 Eliminate a little bit of duplicated code. 2010-07-23 18:58:27 +00:00
trasz
e2cd3ad716 Remove proc locking, it's not needed after r210132. 2010-07-17 15:52:11 +00:00
trasz
e3a946ddad Make svr4(4) version of poll(2) use the same limit of file descriptors as the
usual poll(2) does, instead of checking resource limits.
2010-07-15 18:44:58 +00:00
kib
5f8b30cbbb Constify source argument for siginfo_to_siginfo32().
MFC after:	1 week
2010-07-04 11:43:53 +00:00
jhb
df7979cf76 Tweak the in-kernel API for sending signals to threads:
- Rename tdsignal() to tdsendsignal() and make it private to kern_sig.c.
- Add tdsignal() and tdksignal() routines that mirror psignal() and
  pksignal() except that they accept a thread as an argument instead of
  a process.  They send a signal to a specific thread rather than to an
  individual process.

Reviewed by:	kib
2010-06-29 20:41:52 +00:00
kib
180cca1c2d Regenerate 2010-06-28 18:17:21 +00:00
kib
b6d8416eac Count number of threads that enter and leave dynamically registered
syscalls. On the dynamic syscall deregistration, wait until all
threads leave the syscall code. This somewhat increases the safety
of the loadable modules unloading.

Reviewed by:	jhb
Tested by:	pho
MFC after:	1 month
2010-06-28 18:06:46 +00:00
jkim
f68d88b142 Let x86bios_alloc() pass contigmalloc(9) flags. Use it to set M_WAITOK
from VESA BIOS initialization.  All other malloc(9) uses in the function is
blocking any way.
2010-06-23 17:20:51 +00:00
ed
d7eaa4520b ANSIfy prototypes in subr_usbd.c.
Clang generates the following warnings when building subr_usbd.c:

| subr_usbd.c:598:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype
| subr_usbd.c:627:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype
| subr_usbd.c:649:13: warning: promoted type 'int' of K&R function
|   parameter is not compatible with the parameter type 'uint8_t' (aka
|   'unsigned char') declared in a previous prototype

Instead of just ANSIfying these three prototypes, do it for the entire
file.

Spotted by:	clang
2010-06-12 12:19:08 +00:00
jhb
9b74a62d73 Update several places that iterate over CPUs to use CPU_FOREACH(). 2010-06-11 18:46:34 +00:00
wkoszek
ab9f5dbe35 Bring USB fixes for linux(4).
Intention of this commit is to let us take a full advantage
of libusb(8) ported to Linux. This decreases a possibility of getting
any collisions within ioctl() "command" space, especially with
relation to  LINUX_SNDCTL_SEQ... stuff.

Basically, we provide commands, that will be mapped in the kernel
to correct ones and forward those to the USB layer. Port enabling
functionality brought with this patch is here:

	http://www.freebsd.org/cgi/query-pr.cgi?pr=146895

Bump __FreeBSD_version to catch, since which version installing a
port makes sense.

This patch should bring no regressions. So far, only i386 is tested.

Tested by:	thompsa@
Reviewed by:	thompsa@
OKed by:	netchild@
2010-05-24 07:04:00 +00:00
kib
4208ccbe79 Reorganize syscall entry and leave handling.
Extend struct sysvec with three new elements:
sv_fetch_syscall_args - the method to fetch syscall arguments from
  usermode into struct syscall_args. The structure is machine-depended
  (this might be reconsidered after all architectures are converted).
sv_set_syscall_retval - the method to set a return value for usermode
  from the syscall. It is a generalization of
  cpu_set_syscall_retval(9) to allow ABIs to override the way to set a
  return value.
sv_syscallnames - the table of syscall names.

Use sv_set_syscall_retval in kern_sigsuspend() instead of hardcoding
the call to cpu_set_syscall_retval().

The new functions syscallenter(9) and syscallret(9) are provided that
use sv_*syscall* pointers and contain the common repeated code from
the syscall() implementations for the architecture-specific syscall
trap handlers.

Syscallenter() fetches arguments, calls syscall implementation from
ABI sysent table, and set up return frame. The end of syscall
bookkeeping is done by syscallret().

Take advantage of single place for MI syscall handling code and
implement ptrace_lwpinfo pl_flags PL_FLAG_SCE, PL_FLAG_SCX and
PL_FLAG_EXEC. The SCE and SCX flags notify the debugger that the
thread is stopped at syscall entry or return point respectively.  The
EXEC flag augments SCX and notifies debugger that the process address
space was changed by one of exec(2)-family syscalls.

The i386, amd64, sparc64, sun4v, powerpc and ia64 syscall()s are
changed to use syscallenter()/syscallret(). MIPS and arm are not
converted and use the mostly unchanged syscall() implementation.

Reviewed by:	jhb, marcel, marius, nwhitehorn, stas
Tested by:	marcel (ia64), marius (sparc64), nwhitehorn (powerpc),
	stas (mips)
MFC after:	1 month
2010-05-23 18:32:02 +00:00
netchild
88731dce0c - #ifdef out the cliplist part, skype seems like using an uninitialized
variable and can cause problems, without the cliplist handling it works
  without problems
- improve the cliplist error handling
- fix VIDIOCGTUNER and VIDIOCSMICROCODE (still no hardware available to test)

Submitted by:	J.R. Oldroyd <jr@opal.com>
X-MFC after:	soon (together with all the v4l stuff)
2010-05-03 14:19:58 +00:00
jkim
428aff4f1c Reduce MD code further. At least, it compiles on ia64 now (but it is not
connected to build).  The idea/code was shamelessly taken from r207329.
2010-05-01 01:05:07 +00:00
jkim
b092dfff59 Do not initialize mutex and return error if it cannot map memory. 2010-05-01 00:36:40 +00:00
kib
1b4a81ab7e Provide compat32 shims for kinfo_proc sysctl. This allows 32bit ps(1) to
mostly work on 64bit host.

The work is based on an original patch submitted by emaste, obtained
from Sandvine's source tree.

Reviewed by:	jhb
MFC after:	1 week
2010-04-21 19:32:00 +00:00
kib
d4d906be00 Extract the code to copy-out struct rusage32 from struct rusage
into the new function.

Reviewed by:	jhb
MFC after:	1 week
2010-04-21 19:28:01 +00:00
emaste
c1468b9b67 Linux puts a blank line between each CPU. 2010-04-14 13:44:22 +00:00
bz
7fe3c0a85b Add a forward declaration to silence a warning when compiling ia32_genassym.c.
Reviewed by:	kib
MFC after:	3 days
2010-04-03 12:34:32 +00:00
netchild
1edbfe1bf0 Re-apply r205683 with some modifications:
Fix some bogus values in linprocfs.

  Submitted by:	Petr Salinger <Petr.Salinger@seznam.cz>
  Verified on:	GNU/kFreeBSD debian 8.0-1-686 (by submitter)
  PR:		144584

Reviewed by / discussed with:	kib, des, jhb, submitter
2010-04-02 06:50:28 +00:00
ed
4f08ecd7ed Rename st_*timespec fields to st_*tim for POSIX 2008 compliance.
A nice thing about POSIX 2008 is that it finally standardizes a way to
obtain file access/modification/change times in sub-second precision,
namely using struct timespec, which we already have for a very long
time. Unfortunately POSIX uses different names.

This commit adds compatibility macros, so existing code should still
build properly. Also change all source code in the kernel to work
without any of the compatibility macros. This makes it all a less
ambiguous.

I am also renaming st_birthtime to st_birthtim, even though it was a
local extension anyway. It seems Cygwin also has a st_birthtim.
2010-03-28 13:13:22 +00:00
netchild
d82aae616f Revert r205683 to resolve some code quality issues which do not affect the
build or use of linprocfs, before committing the reworked patch again.

Requested by:	des
2010-03-26 14:36:16 +00:00
netchild
8cb631a42d Fix some bogus values in linprocfs.
Submitted by:	Petr Salinger <Petr.Salinger@seznam.cz>
Verified on:	GNU/kFreeBSD debian 8.0-1-686 (by submitter)
PR:		144584
2010-03-26 11:43:15 +00:00
netchild
db8514f06a Fix some problems which may lead to a panic:
- right order of src and dst in memcpy
 - NULL out the clips after freeing to prevent an accident

Noticed by:	hselasky
2010-03-26 08:42:11 +00:00
jkim
3ce45e9870 Revert accidentally committed initial real mode %sp change of r205347.
Note I am keeping %ds change because X.org int10 handler does it and
it seems reasonable.
2010-03-25 17:14:47 +00:00
jkim
7725810bd9 Optimize real mode page table lookup. 2010-03-25 17:03:52 +00:00
jkim
49ca5d49ba Fix stupid typos. Some VESA BIOSes directly call BIOS interrupt handlers
within the VBE interrupt handler.  Unfortunately it was causing real mode
page faults because we were fetching instructions from bogus addresses.
Pass me the pointyhat, please.

PR:		kern/144654
MFC after:	3 days
2010-03-25 15:56:04 +00:00
nwhitehorn
d63c82a6ac Change the arguments of exec_setregs() so that it receives a pointer
to the image_params struct instead of several members of that struct
individually. This makes it easier to expand its arguments in the future
without touching all platforms.

Reviewed by:	jhb
2010-03-25 14:24:00 +00:00
jhb
72e71a3c3d Add missing Giant locking for the vfsconf list.
Submitted by:	kib
2010-03-24 14:20:37 +00:00
jhb
878de09a93 Implement /proc/filesystems.
Submitted by:	Fernando Apesteguia fernando.apesteguia (gmail)
2010-03-23 21:49:33 +00:00
jkim
a40c3ddf5a Support memory wraparound instead of high memory as VM86 mode does.
Suggested by:	delphij
2010-03-22 18:43:36 +00:00
jkim
c581c7d82f Fix i386 PAE kernel build.
Reported by:	tinderbox
2010-03-22 17:30:34 +00:00
ed
6156503467 Actually make O_DIRECTORY work.
According to POSIX open() must return ENOTDIR when the path name does
not refer to a path name. Change vn_open() to respect this flag. This
also simplifies the Linuxolator a bit.
2010-03-21 20:43:23 +00:00
jkim
a0f967165a - Map EBDA if available and add 64KB above 1MB (high memory), just in case.
- Print the initial memory map when bootverbose is set.
- Change the page fault address format from linear to %cs:%ip style.
- Move duplicate code into a newly added function.
- Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
kib
169d74536d Regen 2010-03-19 11:14:37 +00:00
kib
b0ac73182e Remove empty line.
MFC after:	2 weeks
2010-03-19 11:13:42 +00:00
kib
06319cba03 Implement compat32 shims for mqueuefs.
Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:10:24 +00:00
kib
34d2655cb1 Implement compat32 shims for ksem syscalls.
Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:08:43 +00:00
kib
b27fa06f97 Move SysV IPC freebsd32 compat shims from freebsd32_misc.c to corresponding
sysv_{msg,sem,shm}.c files.

Mark SysV IPC freebsd32 syscalls as NOSTD and add required
SYSCALL_INIT_HELPER/SYSCALL32_INIT_HELPERs to provide auto
register/unregister on module load.

This makes COMPAT_FREEBSD32 functional with SysV IPC compiled and loaded
as modules.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:04:42 +00:00
kib
610214ed4c Move SysV IPC freebsd32 compat shims helpers from freebsd32_misc.c to
sysv_ipc.c.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 11:01:51 +00:00
kib
d19a162142 Introduce SYSCALL_INIT_HELPER and SYSCALL32_INIT_HELPER macros and
neccessary support functions to allow registering dynamically loaded
syscalls from the MOD_LOAD handlers. Helpers handle registration
failures semi-automatically.

Reviewed by:	jhb
MFC after:	2 weeks
2010-03-19 10:56:30 +00:00
kib
7932a1f757 FOr SYSCALL_MODULE_HELPER, use "sys/<syscallname>" module name.
FOr SYSCALL32_MODULE_HELPER, use "sys32/<syscallname>" module name.
This avoids modules name conflict when compat32 syscall does not
need shims.

Note that SYSCALL_MODULE_HELPER is going to be unused in the tree by
several next commits.

Suggested by:	jhb
MFC after:	2 weeks
2010-03-19 10:52:54 +00:00
kib
e28b3013f9 Make freebsd32_copyiniov() available outside of freebsd32_misc.
MFC after:	2 weeks
2010-03-19 10:49:03 +00:00
jkim
de04cb233d Detect illegal access to unmapped memory within real mode emulator to aid
debugging.  Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
nwhitehorn
8cbb7143ab Regen after big endian compatibility import. 2010-03-11 14:56:59 +00:00
nwhitehorn
142a4d2993 Provide groundwork for 32-bit binary compatibility on non-x86 platforms,
for upcoming 64-bit PowerPC and MIPS support. This renames the COMPAT_IA32
option to COMPAT_FREEBSD32, removes some IA32-specific code from MI parts
of the kernel and enhances the freebsd32 compatibility code to support
big-endian platforms.

Reviewed by:	kib, jhb
2010-03-11 14:49:06 +00:00