src/usr.bin/fstat, branch releng/10.0

Similar to 233760 and 236717, export some more useful info about the

2013-05-03T21:11:57+00:00

kernel-based POSIX semaphore descriptors to userland via procstat(1) and
fstat(1):
- Change sem file descriptors to track the pathname they are associated
  with and add a ksem_info() method to copy the path out to a
  caller-supplied buffer.
- Use the fo_stat() method of shared memory objects and ksem_info() to
  export the path, mode, and value of a semaphore via struct kinfo_file.
- Add a struct semstat to the libprocstat(3) interface along with a
  procstat_get_sem_info() to export the mode and value of a semaphore.
- Teach fstat about semaphores and to display their path, mode, and value.

MFC after:	2 weeks

fuser(1) requires a filename.

2013-04-11T12:24:29+00:00

Reviewed by:	lstewart
Approved by:	bcr (mentor)
MFC after:	3 days

Bring DPADD in sync with LDADD.

2012-05-19T05:07:03+00:00

Don't cast inode number or file size down to long or unsigned.

2012-05-18T10:15:46+00:00

Since ino_t size is about to change to 64-bits, casts to long would
truncate 64-bit numbers on 32-bit archs.

Sponsored by:	Google Summer of Code 2011

Export some more useful info about shared memory objects to userland

2012-04-01T18:22:48+00:00

via procstat(1) and fstat(1):
- Change shm file descriptors to track the pathname they are associated
  with and add a shm_path() method to copy the path out to a caller-supplied
  buffer.
- Use the fo_stat() method of shared memory objects and shm_path() to
  export the path, mode, and size of a shared memory object via
  struct kinfo_file.
- Add a struct shmstat to the libprocstat(3) interface along with a
  procstat_get_shm_info() to export the mode and size of a shared memory
  object.
- Change procstat to always print out the path for a given object if it
  is valid.
- Teach fstat about shared memory objects and to display their path,
  mode, and size.

MFC after:	2 weeks

Remove trailing whitespace per mdoc lint warning

2012-03-29T05:02:12+00:00

Disussed with:	gavin
No objection from:	doc
Approved by:	joel
MFC after:	3 days

Backout r230934 which didn't work with unix sockets and

2012-02-27T17:39:34+00:00

several filesystem layers mounted at the specified path.

Pointy hat to:	pluknet

Print the owner process for unix domain sockets when restricted to the

2012-02-03T09:07:53+00:00

specified files.

PR:		bin/143962
MFC after:	2 weeks

Spelling fixes for usr.bin/

2011-12-30T11:02:40+00:00

Mark global functions and/or variables in fstat(1) static where possible.

2011-11-06T18:49:36+00:00

This allows compilers and static analyzers to more thorough analysis.