src/lib/libprocstat, branch release/9.3.0

MFC r260150: MFV r259170:

2014-03-19T23:58:05Z

4370 avoid transmitting holes during zfs send 4371 DMU code clean up illumos/illumos-gate@43466aae47bfcd2ad9bf501faec8e75c08095e4f NOTE: Make sure the boot code is updated if a zpool upgrade is done on boot zpool.

Merge r262690 from head to stable/9:

2014-03-19T10:32:57Z

When querying a process's umask via sysctl in libprocstat(), don't print a warning if EPERM is returned as this is an expected failure mode rather than error -- similar to current handling of ESRCH. This makes the output of 'procstat -as' vastly more palatable. Sponsored by: DARPA, AFRL

MFC r250378:

2013-06-30T08:36:19Z

Make errbuf optional, so if a caller is not interested in an error message she can pass NULL (procstat(1) already does this).

MFC 250223,250233:

2013-06-24T16:04:59Z

Similar to 233760 and 236717, export some more useful info about the 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 251637:

2013-06-21T19:28:58Z

Borrow the algorithm from kvm_getprocs() to fix procstat_getprocs() to handle the case where the process tables grows in between the calls to fetch the size and fetch the table.

MFC r250147:

2013-05-26T18:26:29Z

procstat_getpathname: for kvm method, instead of returning the error that the method is not supported, return an empty string. This looks more handy for callers like procstat(1), which will not abort after the failed call and still output some useful information.

MFC r249666, r249667, r249670, r249672, r249674, r249676, r249677, r249679,

2013-05-21T19:04:16Z

r249681, r249684, r249688, r249711, r249731, r250146 r249666, r249682: Make libprocstat(3) extract procstat notes from a process core file. PR: kern/173723 Suggested by: jhb Glanced by: kib r249667: Add procstat_getvmmap function to get VM layout of a process. r249670: Add procstat_getgroups function to retrieve process groups. r249672: Add procstat_getumask function to retrieve a process umask. r249674: Add procstat_getrlimit function to retrieve a process resource limits info. r249676: Add procstat_getpathname function to retrieve a process executable. r249677: Add procstat_getosrel function to retrieve a process osrel info. r249679: Extend libprocstat with functions to retrieve process command line arguments and environment variables. Suggested by: stas Reviewed by: jhb and stas (initial version) r249681: Add procstat_getauxv function to retrieve a process auxiliary vector. r249684: Add procstat_getkstack function to dump kernel stacks of a process. r249688: Bump date. r249711 (joel): mdoc: end function context properly. r249731: Embed revision id in the library. r250146: KVM method support for procstat_getgroups, procstat_getumask, procstat_getrlimit, and procstat_getosrel.

MFC r241304: procstat_getprocs: honor kvm_getprocs interface - cnt is signed

2012-10-17T11:33:32Z

MFC r240080:

2012-09-14T18:44:23Z

Add __BEGIN_DECLS and __END_DECLS to make libprocstat more C++-friendly. Submitted by: Daniel Dettlaff

MFC 236717:

2012-06-29T15:30:14Z

Teach procstat_get_shm_info_kvm() how to fetch the pathname of a SHM file descriptor from a core and set it in fts->fs_path.