#compdef fstat

local pids
pids=(${${${(f)"$(/usr/bin/procstat -ah)"}/[[:space:]]#/}/[[:space:]]*[[:space:]](ELF[[:digit:]]#[[:space:]]|-[[:space:]]#)/:})

_arguments -s \
'-f[Restrict examination to files open in the same file systems as the named file arguments]' \
'-M[Extract values associated with the name list from the specified core]:core:_files' \
'-N[Extract the name list from the specified system]:system:' \
'-m[Include memory-mapped files in the listing]' \
'-n[Numerical format]' \
'-p[Report all files open by the specified process]:Process id:(($pids))' \
'-u[Report all files open by the specified user]:User:_users' \
'-v[Verbose mode]' \
'*:Files:_files'