[Crash-utility] struct structname.member1,member2,member3, ...
Olivier Daudel
olivier.daudel at u-paris10.fr
Sun Oct 22 20:34:48 UTC 2006
Hi Dave,
1) With this new patch, i think we are not far from your goals.
But i understand that to change somthing in struct, union, etc. is rather
"dangerous".
Perhaps it would be preferable to implement this attempt in an independent
module ?
The command cmd_struct(), cmd_union() and cmd_pointer() have been unified
and also "*" supports -l now.
It was not the case before (i missed something ?).
To take care of the differences between struct, union and *, we have mainely
one instruction.
2) Nothing to do with the patch, but may be there is still something wrong
with struct -o (in standard 3.8 and also in my new version):
crash> struct -o ipc_id_ary
struct ipc_id_ary {
[0] int size;
[4] struct kern_ipc_perm *p[0];
}
SIZE: 4
We should have SIZE greater than 4 ?
Olivier
crash> struct inode.i_uid,i_gid,i_alloc_sem f605b31c
i_uid = 0,
i_gid = 5,
i_alloc_sem = {
count = 0,
wait_lock = {
slock = 1,
magic = 3735899821,
break_lock = 0
},
wait_list = {
next = 0xf605b3c4,
prev = 0xf605b3c4
}
},
I don't think, it would be very easy to have this result with grep and we
don't have the -R option
as in task... (if i am correct).
crash> struct inode.i_uid,i_gid,i_alloc_sem f605b31c 3
i_uid = 0,
i_gid = 5,
i_alloc_sem = {
count = 0,
wait_lock = {
slock = 1,
magic = 3735899821,
break_lock = 0
},
wait_list = {
next = 0xf605b3c4,
prev = 0xf605b3c4
}
},
i_uid = 0,
i_gid = 0,
i_alloc_sem = {
count = 0,
wait_lock = {
slock = 1,
magic = 3735899821,
break_lock = 0
},
wait_list = {
next = 0xf605b53c,
prev = 0xf605b53c
}
},
i_uid = 0,
i_gid = 0,
i_alloc_sem = {
count = 0,
wait_lock = {
slock = 1,
magic = 3735899821,
break_lock = 0
},
wait_list = {
next = 0xf605b6b4,
prev = 0xf605b6b4
}
},
crash> struct inode.i_list f605b31c 3
i_list = {
next = 0xf605b49c,
prev = 0xf7b4e1cc
},
i_list = {
next = 0xf60cadb8,
prev = 0xf605b324
},
i_list = {
next = 0xf60e6458,
prev = 0xf60e6278
},
crash> struct inode -r f605b31c 3
f605b31c: 00000000 00000000 f605b49c f7b4e1cc ................
f605b32c: f7d76bfc f6b6903c f6d8ea60 f6d8ea60 .k..<...`...`...
f605b33c: 00000002 00000001 00002190 00000001 .........!......
f605b34c: 00000000 00000005 08800000 00000000 ................
f605b35c: 00000000 453bb0ec 0606fb28 453bb0ec ......;E(.....;E
f605b36c: 0606fb28 453ba008 2330b3e8 0000000a (.....;E..0#....
f605b37c: 00000400 00000000 00000000 00000000 ................
f605b38c: 00000001 dead4ead 00000000 00000001 .....N..........
f605b39c: 00000000 00000001 dead4ead 00000000 .........N......
f605b3ac: f605b3ac f605b3ac 00000000 00000001 ................
f605b3bc: dead4ead 00000000 f605b3c4 f605b3c4 .N..............
f605b3cc: c036d760 c036a7a0 f7d72200 00000000 `.6...6.."......
f605b3dc: f605b3e0 f605b31c 00000000 00000220 ............ ...
f605b3ec: 00000000 01000000 deaf1eed 00000000 ................
f605b3fc: 00000000 00000000 00010001 f605b408 ................
f605b40c: f605b408 00000001 dead4ead 00000000 .........N......
f605b41c: 00000000 00000000 00000000 c0485540 ............ at UH.
f605b42c: 000000d2 c0369b88 00000001 dead4ead ......6......N..
f605b43c: 00000000 f605b440 f605b440 00000000 .... at ...@.......
f605b44c: 00000000 00000000 f7da1440 f6b69164 ........ at ...d...
f605b45c: 00000000 00000000 f7da1404 00000000 ................
f605b46c: 00000000 00000000 00000000 00000000 ................
f605b47c: 00000000 00000000 00000001 00000000 ................
f605b48c: f60f9000 00000000 ........
f605b494: 00000000 00000000 f60cadb8 f605b324 ............$...
f605b4a4: f674832c f6b6990c f60493ac f60493ac ,.t.............
f605b4b4: 00002544 00000001 00001180 00000001 D%..............
f605b4c4: 00000000 00000000 00000000 00000000 ................
f605b4d4: 00000000 453ba008 20ce71a8 453ba008 ......;E.q. ..;E
f605b4e4: 20ce71a8 453ba008 20ce71a8 0000000a .q. ..;E.q. ....
f605b4f4: 00001000 00000000 00000000 00000000 ................
f605b504: 00000001 dead4ead 00000000 00000001 .....N..........
f605b514: 00000000 00000001 dead4ead 00000000 .........N......
f605b524: f605b524 f605b524 00000000 00000001 $...$...........
f605b534: dead4ead 00000000 f605b53c f605b53c .N......<...<...
f605b544: c04854e0 c036ab40 f7fcf200 00000000 .TH. at .6.........
f605b554: f605b558 f605b494 00000000 00000220 X........... ...
f605b564: 00000000 01000000 deaf1eed 00000000 ................
f605b574: 00000000 00000000 00010001 f605b580 ................
f605b584: f605b580 00000001 dead4ead 00000000 .........N......
f605b594: 00000000 00000000 00000000 c0485540 ............ at UH.
f605b5a4: 000000d2 c0369b88 00000001 dead4ead ......6......N..
f605b5b4: 00000000 f605b5b8 f605b5b8 00000000 ................
f605b5c4: 00000000 00000000 f605b5cc f605b5cc ................
f605b5d4: f7aa7400 00000000 00000000 00000000 .t..............
f605b5e4: 00000000 00000000 00000000 00000007 ................
f605b5f4: 00000000 00000000 00000000 00000000 ................
f605b604: 00000000 00000000 ........
f605b60c: 00000000 00000000 f60e6458 f60e6278 ........Xd..xb..
f605b61c: f605b794 f609e3ac f6067430 f6067430 ........0t..0t..
f605b62c: 000022db 00000001 00008124 00000001 ."......$.......
f605b63c: 00000000 00000000 00000000 00001000 ................
f605b64c: 00000000 453b9fe3 292fe200 453b9fe3 ......;E../)..;E
f605b65c: 292fe200 453b9fe3 292fe200 0000000c ../)..;E../)....
f605b66c: 00001000 00000000 00000000 00000000 ................
f605b67c: 00000001 dead4ead 00000000 00000001 .....N..........
f605b68c: 00000000 00000001 dead4ead 00000000 .........N......
f605b69c: f605b69c f605b69c 00000000 00000001 ................
f605b6ac: dead4ead 00000000 f605b6b4 f605b6b4 .N..............
f605b6bc: c04854e0 c036d400 f7eaf400 00000000 .TH...6.........
f605b6cc: f605b6d0 f605b60c 00000000 00000220 ............ ...
f605b6dc: 00000000 01000000 deaf1eed 00000000 ................
f605b6ec: 00000000 00000000 00010001 f605b6f8 ................
f605b6fc: f605b6f8 00000001 dead4ead 00000000 .........N......
f605b70c: 00000000 00000000 00000000 c036d380 ..............6.
f605b71c: 000000d2 c036d3b0 00000001 dead4ead ......6......N..
f605b72c: 00000000 f605b730 f605b730 00000000 ....0...0.......
f605b73c: 00000000 00000000 f605b744 f605b744 ........D...D...
f605b74c: 00000000 00000000 00000000 00000000 ................
f605b75c: 00000000 00000000 00000000 00000000 ................
f605b76c: 00000000 00000000 00000000 00000000 ................
f605b77c: 00000000 00000000 ........
If you correlate the dump with the previous display, i think the dump is
correct.
crash> ps 1
PID PPID CPU TASK ST %MEM VSZ RSS COMM
1 0 0 f7e8caa0 IN 0.0 0 0 init
crash> struct task_struct.sibling
struct task_struct {
[176] struct list_head sibling;
}
crash> struct task_struct.pid,tgid,pending -l task_struct.sibling 0xf7e8c0d0
pid = 2,
tgid = 2,
pending = {
list = {
next = 0xf7e8c494,
prev = 0xf7e8c494
},
signal = {
sig = {0, 0}
}
},
crash> struct task_struct.pid,tgid,pending -l 176 0xf7e8c0d0
pid = 2,
tgid = 2,
pending = {
list = {
next = 0xf7e8c494,
prev = 0xf7e8c494
},
signal = {
sig = {0, 0}
}
},
I don't think you can do that with task (-l not supported)
crash> * task_struct.pid,tgid,pending -l 176 0xf7e8c0d0
pid = 2,
tgid = 2,
pending = {
list = {
next = 0xf7e8c494,
prev = 0xf7e8c494
},
signal = {
sig = {0, 0}
}
},
-------------- next part --------------
A non-text attachment was scrubbed...
Name: symbols.patch
Type: application/octet-stream
Size: 13148 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/crash-utility/attachments/20061022/06fd8163/attachment.obj>
More information about the Crash-utility
mailing list