@@ -416,10 +416,16 @@
 
          PR_SUSPENDED   indicates that the lwp stopped due to internal
                         synchronization of lwps within the process.  pr_what
                         is unused in this case.
 
+         PR_BRAND       indicates that the lwp stopped for a brand-specific
+                        reason.  Interpretation of the value of 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 proc(4) consumers.
+
      pr_cursig names the current signal, that is, the next signal to be
      delivered to the lwp, if any.  pr_info, when the lwp is in a PR_SIGNALLED
      or PR_FAULTED stop, contains additional information pertinent to the
      particular signal or fault (see <sys/siginfo.h>).
 

@@ -616,10 +622,18 @@
 
      pr_pctcpu and pr_pctmem 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).  pr_pctcpu is the summation over all lwps in the process.
 
+     The pr_fname and pr_psargs are writable by the owner of the process.  To
+     write to them, the 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.
+
      pr_lwp contains the ps(1) information for the representative lwp.  If the
      process is a zombie, pr_nlwp, pr_nzomb, and pr_lwp.pr_lwpid are zero and
      the other fields of pr_lwp are undefined:
 
       typedef struct lwpsinfo {

@@ -724,10 +738,17 @@
      Contains the initial values of the process's aux vector in an array of
      auxv_t structures (see <sys/auxv.h>).  The values are those that were
      passed by the operating system as startup information to the dynamic
      linker.
 
+   argv
+     Contains the concatenation of each of the argument strings, including
+     their NUL terminators, in the argument vector (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.
+
    ldt
      This file exists only on x86-based machines.  It is non-empty only if the
      process has established a local descriptor table (LDT).  If non-empty,
      the file contains the array of currently active LDT entries in an array
      of elements of type struct ssd, defined in <sys/sysi86.h>, one element

@@ -2086,10 +2107,12 @@
              process privileges
      /proc/pid/sigact
              process signal actions
      /proc/pid/auxv
              process aux vector
+     /proc/pid/argv
+             process argument vector
      /proc/pid/ldt
              process LDT (x86 only)
      /proc/pid/usage
              process usage
      /proc/pid/lusage