src/sys/compat/linux/linux_ipc.c, branch release/5.3.0_cvs

This commit was manufactured by cvs2svn to create tag

2004-11-04T19:12:42+00:00

'RELENG_5_3_0_RELEASE'.

This commit was manufactured to restore the state of the 5.3-RELEASE image.

Changes to MI Linux emulation code necessary to run 32-bit Linux binaries

2004-08-16T07:28:16+00:00

on AMD64, and the general case where the emulated platform has different
size pointers than we use natively:
- declare certain structure members as l_uintptr_t and use the new PTRIN
  and PTROUT macros to convert to and from native pointers.
- declare some structures __packed on amd64 when the layout would differ
  from that used on i386.
- include  instead of 
  if compiling with COMPAT_LINUX32. This will need to be revisited before
  32-bit and 64-bit Linux emulation support can coexist in the same kernel.
- other small scattered changes.

This should be a no-op on i386 and Alpha.

Back out the following revisions:

2003-11-05T01:53:10+00:00

1.36      +73 -60    src/sys/compat/linux/linux_ipc.c
1.83      +102 -48   src/sys/kern/sysv_shm.c
1.8       +4 -0      src/sys/sys/syscallsubr.h

That change was intended to support vmware3, but
wantrem parameter is useless because vmware3 uses SYSV shared memory
to talk with X server and X server is native application.
The patch worked because check for wantrem was not valid
(wantrem and SHMSEG_REMOVED was never checked for SHMSEG_ALLOCATED segments).

Add kern.ipc.shm_allow_removed (integer, rw) sysctl (default 0) which when set
to 1 allows to return removed segments in
shm_find_segment_by_shmid() and shm_find_segment_by_shmidx().

MFC after:	1 week

Use __FBSDID().

2003-06-10T21:29:12+00:00

Change the semantics of sysv shm emulation to take a additional

2003-05-05T09:22:58+00:00

argument to the functions shm{at,ctl}1 and shm_find_segment_by_shmid{x}.
The BSD semantics didn't allow the usage of shared segment after
being marked for removal through IPC_RMID.

The patch involves the following functions:
  - shmat
  - shmctl
  - shm_find_segment_by_shmid
  - shm_find_segment_by_shmidx
  - linux_shmat
  - linux_shmctl

Submitted by:	Orlando Bassotto 
Reviewed by:	marcel

Deprecate machine/limits.h in favor of new sys/limits.h.

2003-04-29T13:36:06+00:00

Change all in-tree consumers to include 

Discussed on:	standards@
Partially submitted by: Craig Rodrigues

Clean up whitespace and remove register keyword.

2003-03-03T09:17:12+00:00

More caddr_t removal, in conjunction with copy{in,out}(9) this time.

2003-03-03T09:14:26+00:00

Also clean up some egregious casts and incorrect use of sizeof.

Add function linux_msg() for regulating output from the linux emulation

2003-01-02T02:19:10+00:00

code, make the emulator use it.

Rename unsupported_msg() to unimplemented_syscall().  Rename some arguments
for clarity

Fixup grammar.

Requested by: bde

- Add support for IPC_64 extensions into shmctl(2), semctl(2) and msgctl(2);

2002-10-11T11:43:09+00:00

- 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