[Crash-utility] struct structname.member1,member2,member3, ...

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 ............@UH. f605b42c: 000000d2 c0369b88 00000001 dead4ead ......6......N.. f605b43c: 00000000 f605b440 f605b440 00000000 ....@...@....... f605b44c: 00000000 00000000 f7da1440 f6b69164 ........@...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.@.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 ............@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} } },