FreeBSD source tree https://cgit-dev.freebsd.org/src-test/atom?h=stable%2F7 2012-10-10T21:20:34Z 2012-10-10T21:20:34Z Eitan Adler eadler@FreeBSD.org 2012-10-10T21:20:34Z urn:sha1:b3e2afbd247c8837975ca5b705fcf09a7623cfa1 add SG state type PR: bin/171664 Approved by: cperciva (implicit) 2009-09-14T17:34:49Z John Baldwin jhb@FreeBSD.org 2009-09-14T17:34:49Z urn:sha1:73ba9b1230cd8bcd9506e1794d484039e029c508 Add a new type of VM object: OBJT_SG. An OBJT_SG object is very similar to a device pager (OBJT_DEVICE) object in that it uses fictitious pages to provide aliases to other memory addresses. The primary difference is that it uses an sglist(9) to determine the physical addresses for a given offset into the object instead of invoking the d_mmap() method in a device driver. 2009-02-17T19:57:52Z John Baldwin jhb@FreeBSD.org 2009-02-17T19:57:52Z urn:sha1:790767dcd5e563c726e419ff426ad7e01c516262 semaphores. Specifically, semaphores are now represented as new file descriptor type that is set to close on exec. This removes the need for all of the manual process reference counting (and fork, exec, and exit event handlers) as the normal file descriptor operations handle all of that for us nicely. It is also suggested as one possible implementation in the spec and at least one other OS (OS X) uses this approach. Refer to the original commit for more details on specific bug fixes, etc. A notable difference in this MFC relative to the original commit to HEAD is that the MAC entry points are unchanged to preserve the ABI for MAC policy modules. fstat() on a POSIX semaphore in 7 uses the mac_check_posix_sem_getvalue() hook to determine access as that is the closest match to stat() of the available hooks. Discussed with: rwatson (MAC bits (or lack thereof)) 2008-12-19T20:20:50Z Joe Marcus Clarke marcus@FreeBSD.org 2008-12-19T20:20:50Z urn:sha1:c09e04ecc41259eb2e8026ae9eed7893b773402f Do not segfault when procstat -f or procstat -v is called on a process not owned by the current user. If kinfo_getfile() or kinfo_getvmmap() return NULL, simply exit, and do not try and derefernce the memory. Approved by: re (kib) 2008-12-06T19:54:50Z Peter Wemm peter@FreeBSD.org 2008-12-06T19:54:50Z urn:sha1:c20d140b2317d1562242ffe5c249427f0259d279 Add new KERN_PROC_* handlers with 32/64 bit stable interfaces. Pack records from sysctl to reduce copyout size. Add helper to unpack and provide a more stable interface. Approved by: re (kensmith) 2008-07-31T08:50:07Z Ed Schouten ed@FreeBSD.org 2008-07-31T08:50:07Z urn:sha1:dbbca1974e0c0bd38223af5d0a478e63fab61a4c Fix a small typo in the procstat(1) manpage: messsage queue. 2008-04-27T14:17:32Z Robert Watson rwatson@FreeBSD.org 2008-04-27T14:17:32Z urn:sha1:c317eeab20aa9ddcf81b10640600dae357d47b66 Provide more detailed information about each procstat(1) display mode, including a key to fields in each mode and flag abbreviations. Note: mention of POSIX shared memory in the man page has been removed in the MFC, as explicit kernel support for pshm hasn't been merged to RELENG_7 yet. 2008-04-27T14:13:37Z Robert Watson rwatson@FreeBSD.org 2008-04-27T14:13:37Z urn:sha1:1f00ab5427a05a933e99cefd7c6ce9a4c01673b2 It is a bug that procstat(8) works only on live kernels and not crashdumps; document in case anyone wants to work on fixing this. 2008-04-24T06:32:16Z Robert Watson rwatson@FreeBSD.org 2008-04-24T06:32:16Z urn:sha1:b8c497223781e73cc52c0cf2d7bdff908d2bf629 Use ddb(4), not DDB(4) for man page cross-references. Reported by: novel 2008-04-11T09:09:28Z Robert Watson rwatson@FreeBSD.org 2008-04-11T09:09:28Z urn:sha1:2442da2edc05bf1202854b2cdfc24b6b0b2adf73 Add support for displaying a process' current working directory, root directory, and jail directory within procstat. While this functionality is available already in fstat, encapsulating it in the kern.proc.filedesc sysctl makes it accessible without using kvm and thus without needing elevated permissions. The new procstat output looks like: PID COMM FD T V FLAGS REF OFFSET PRO NAME 76792 tcsh cwd v d -------- - - - /usr/src 76792 tcsh root v d -------- - - - / 76792 tcsh 15 v c rw------ 16 9130 - - 76792 tcsh 16 v c rw------ 16 9130 - - 76792 tcsh 17 v c rw------ 16 9130 - - 76792 tcsh 18 v c rw------ 16 9130 - - 76792 tcsh 19 v c rw------ 16 9130 - - I am also bumping __FreeBSD_version for this as this new feature will be used in at least one port. Reviewed by: rwatson Approved by: rwatson Note that in the MFC, __FreeBSD_version is not bumped as we will bump it once (shortly) for all procstat(1) MFC changes together.