src/usr.bin/ipcs, branch releng/8.1

Change the ABI of some of the structures used by the SYSV IPC API:

2009-06-24T21:10:52Z

- The uid/cuid members of struct ipc_perm are now uid_t instead of unsigned short. - The gid/cgid members of struct ipc_perm are now gid_t instead of unsigned short. - The mode member of struct ipc_perm is now mode_t instead of unsigned short (this is merely a style bug). - The rather dubious padding fields for ABI compat with SV/I386 have been removed from struct msqid_ds and struct semid_ds. - The shm_segsz member of struct shmid_ds is now a size_t instead of an int. This removes the need for the shm_bsegsz member in struct shmid_kernel and should allow for complete support of SYSV SHM regions >= 2GB. - The shm_nattch member of struct shmid_ds is now an int instead of a short. - The shm_internal member of struct shmid_ds is now gone. The internal VM object pointer for SHM regions has been moved into struct shmid_kernel. - The existing __semctl(), msgctl(), and shmctl() system call entries are now marked COMPAT7 and new versions of those system calls which support the new ABI are now present. - The new system calls are assigned to the FBSD-1.1 version in libc. The FBSD-1.0 symbols in libc now refer to the old COMPAT7 system calls. - A simplistic framework for tagging system calls with compatibility symbol versions has been added to libc. Version tags are added to system calls by adding an appropriate __sym_compat() entry to src/lib/libc/incldue/compat.h. [1] PR: kern/16195 kern/113218 bin/129855 Reviewed by: arch@, rwatson Discussed with: kan, kib [1]

Correct types of variables used to track amount of allocated SysV shared

2009-03-02T18:53:30Z

memory from int to size_t. Implement a workaround for current ABI not allowing to properly save size for and report more then 2Gb sized segment of shared memory. This makes it possible to use > 2 Gb shared memory segments on 64bit architectures. Please note the new BUGS section in shmctl(2) and UPDATING note for limitations of this temporal solution. Reviewed by: csjp Tested by: Nikolay Dzham MFC after: 2 weeks

Fix printing of shared memory limits.

2008-12-16T09:17:05Z
MFC after: 3 days

Add the ability to clean up all shared memory segments which are

2007-12-25T00:52:24Z
unused in one go. From the original PR: I've observed that linux apps running under the linuxulator have a habit of leaving behind shared memory segments which are unused, but which eventually cause the system to run out of free segments and these apps will stop working. ipcrm(1) currently only allows removal of unused message queues, shared memory segments and semaphores on an individual basis, or those having a matching (non-zero) key. However it would often be convenient to just do a complete cleanup of everything, usually as root. PR: bin/118292 Submitted by: Callum Gibson Not reviewed by: grog@ Approved by: grog@

Stylify ipcs/ipcs.c and ipcrm/ipcrm in preparation of the upcoming

2007-12-18T09:39:47Z
changes as proposed in bin/118292. Feel free to mention any I have missed, there is much to learn with regarding to style(9). Approved by: grog@

o Fix typo in a comment.

2006-05-15T08:20:38Z
PR: bin/97292 Submitted by: clsung MFC after: 3 days

Change the data type of the upper shared memory limits from a signed

2005-08-06T07:20:18Z
integer to an unsigned long. This lifts variables like the maximum number of pages available for shared memory from 2^31 to 2^32 on 32 bit architectures, and from 2^31 to 2^64 on 64 bit architectures. It should be noted that this changes breaks ABI on 64 bit architectures because the size of the shmmax, shmmin, shmmni, shmseg and shmall members of the shminfo structure has changed. Silence on: current@

If sysctlbyname fails for kernel related reasons, tag the errno

2005-05-24T23:42:09Z
string to the end of the error message. I think we used errx() there when we really wanted an err(). MFC after: 1 week

Use 12 columns for (int) values, 20 columns for (long) and align

2005-03-08T13:14:46Z
headers properly (right justified for numbers, left justified for everything else). This fixes the alignment of the fields on i386, sparc64 and amd64 today but does not dynamically assign column widths or bear in mind that some of the values may be 64-bit in the future. Reviewed by: alfred

Turn K&R functions into prototypes.

2005-02-10T09:13:20Z