*** 711,720 ****
--- 711,731 ----
  .It Sy PR_SUSPENDED
  indicates that the lwp stopped due to internal synchronization of lwps within
  the process.
  .Sy pr_what
  is unused in this case.
+ .It Sy PR_BRAND
+ indicates that the lwp stopped for a brand-specific reason.
+ Interpretation of the value of
+ .Sy pr_what
+ depends on which zone brand is in use.
+ It is not generally expected that an lwp stopped in this state will be
+ restarted by native
+ .\" mandoc(1) doesn't like .Xr macros referring to itself, so this is
+ .\" a bit of a hack.
+ .Nm Ns Pq 4
+ consumers.
  .El
  .Pp
  .Sy pr_cursig
  names the current signal, that is, the next signal to be delivered to the lwp,
  if any.
*** 1022,1031 ****
--- 1033,1056 ----
  are 16-bit binary fractions in the range 0.0 to 1.0 with the binary point to
  the right of the high-order bit (1.0 == 0x8000).
  .Sy pr_pctcpu
  is the summation over all lwps in the process.
  .Pp
+ The
+ .Sy pr_fname
+ and
+ .Sy pr_psargs
+ are writable by the owner of the process.
+ To write to them, the
+ .Sy psinfo
+ file should be open for writing and the desired value for the field should be
+ written at the file offset that corresponds to the member of structure.
+ No other entry may be written to; if a write is attempted to an offset that
+ does not represent one of these two memers, or if the size of the write is not
+ exactly the size of the member being written, no bytes will be written and
+ zero will be returned.
+ .Pp
  .Sy pr_lwp
  contains the
  .Xr ps 1
  information for the representative lwp.
  If the process is a
*** 1176,1185 ****
--- 1201,1219 ----
  .Sy auxv_t
  structures (see
  .In sys/auxv.h ) .
  The values are those that were passed by the operating system as startup
  information to the dynamic linker.
+ .Ss argv
+ Contains the concatenation of each of the argument strings, including their
+ .Sy NUL
+ terminators, in the argument vector
+ .Pq Va argv
+ for the process.
+ If the process has modified either its argument vector, or the contents of
+ any of the strings referenced by that vector, those changes will be visible
+ here.
  .Ss ldt
  This file exists only on x86-based machines.
  It is non-empty only if the process has established a local descriptor table
  .Pq Sy LDT .
  If non-empty, the file contains the array of currently active
*** 3211,3220 ****
--- 3245,3256 ----
  process privileges
  .It Pa /proc/ Ns Em pid Ns Pa /sigact
  process signal actions
  .It Pa /proc/ Ns Em pid Ns Pa /auxv
  process aux vector
+ .It Pa /proc/ Ns Em pid Ns Pa /argv
+ process argument vector
  .It Pa /proc/ Ns Em pid Ns Pa /ldt
  process
  .Sy LDT
  (x86 only)
  .It Pa /proc/ Ns Em pid Ns Pa /usage