[Crash-utility] struct structname.member1,member2,...

[Olivier Daudel]

Hi Dave,
This patch try to extend your technologie in list to struct.
cmd_struct() is modified.
cmd_union() and cmd_pointer() should also be modified.

Do we really have to clone cmd_struct() in these alternatives ?
Why not make so that cmd_struct(), cmd_union() and cmd_pointer() do call a 
common function accepting some flags?
Olivier

struct struct_name address | symbol     <- unchanged
struct struct_name      <-unchanged
struct struct_name -o      <- unchanged


New and the main goal
crash> struct task_struct.pid,tgid f6044560
  pid = 3533,
  tgid = 3533,

Also new and in the main goal
crash> ps 1
   PID    PPID  CPU   TASK    ST  %MEM     VSZ    RSS  COMM
      1      0   0  f7e8caa0  IN   0.0    1744    644  init
crash> task_struct.children f7e8caa0
  children = {
    next = 0xf7e8c0d0,
    prev = 0xc1f060d0
  },
crash> struct task_struct.pid,tgid -l task_struct.sibling 0xf7e8c0d0
  pid = 2,
  tgid = 2,


New (acceptable side effect)
crash> struct task_struct.pid,tgid
struct task_struct {
   [152] pid_t pid;
}
struct task_struct {
   [156] pid_t tgid;
}

struct struc_name array counter   <- unchanged


New (acceptable side effect)
crash> struct task_struct.pid,tgid f6044560 3
  pid = 3533,
  pid = 2850,
  pid = -167489336,
  tgid = 3533,
  tgid = 2850,
  tgid = -167489412,
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