下面的调试步骤可否有问题? 还需怎样进一步的调试?
(gdb) attach 13659
Attaching to program `/export/home0/bbs/bin/bbsd', process 13659
.......
Retry #1:
Retry #2:
Retry #3:
Retry #4:
[New LWP 1 ]
[New Thread 1 (LWP 1)]
Symbols already loaded for /usr/lib/libnsl.so.1
Symbols already loaded for /usr/lib/libsocket.so.1
Symbols already loaded for /usr/local/lib/libz.so.1
Symbols already loaded for /usr/lib/libpthread.so.1
Symbols already loaded for /usr/local/lib/libltdl.so.3
Symbols already loaded for /usr/lib/libdl.so.1
Symbols already loaded for /usr/lib/libc.so.1
Symbols already loaded for /usr/lib/libmp.so.2
Symbols already loaded for /usr/local/lib/libgcc_s.so.1
Symbols already loaded for /usr/lib/libthread.so.1
[Switching to Thread 1 (LWP 1)]
0xd118d26d in _poll () from /usr/lib/libc.so.1
(gdb) b after_post
Breakpoint 1 at 0x80dccfb: file article.c, line 1098.
(gdb) c
Continuing.
Breakpoint 1, after_post (user=0xd057cac0, fh=0x8046a50, boardname=0xd1041680 "test", re=0x0,
poststat=1, session=0x8147900) at article.c:1098
1098 int fd, err = 0, nowid = 0;
(gdb) watch boardname
Watchpoint 2: boardname
(gdb) p boardname
$1 = 0xd1041680 "test"
(gdb) c
Continuing.
Watchpoint 2 deleted because the program has left the block in
which its expression is valid.
0xd117f790 in strncmp () from /usr/lib/libc.so.1
(gdb) p boardname
No symbol "boardname" in current context.
(gdb) bt
#0 0xd117f790 in strncmp () from /usr/lib/libc.so.1
#1 0x08046a9c in ?? ()
#2 0x08128db1 in post_sufix.0 ()
#3 0x00000004 in ?? ()
#4 0x08045c58 in ?? ()
#5 0xd10dccf1 in read () from /usr/lib/libthread.so.1
#6 0x080654bf in post_article (conf=0x8046e20, q_file=0x80f7f8a "", re_file=0x0) at bbs.c:2869
#7 0x08063a44 in do_post (conf=0x8046e20, fileinfo=0x816de00, extraarg=0x0) at bbs.c:2283
#8 0x080ed810 in read_key (conf=0x8046e20, command=16) at newread.c:228
#9 0x080c6247 in do_select_internal (conf=0x8046e20, key=16) at select.c:368
#10 0x080c62d1 in list_select (conf=0x8046e20, key=16) at select.c:388
#11 0x080c660f in list_select_loop (conf=0x8046e20) at select.c:486
#12 0x080ee966 in new_i_read (cmdmode=DIR_MODE_NORMAL, direct=0x8046fe0 "boards/test/.DIR",
dotitle=0x805f8c1 <readtitle>, doentry=0x805fe79 <readdoent>, rcmdlist=0x813c140, ssize=140)
at newread.c:675
#13 0x0806cddf in Read () at bbs.c:6214
#14 0x080bc270 in fav_onselect (conf=0x80477d0) at boards_t.c:714
#15 0x080c5d8d in do_select_internal (conf=0x80477d0, key=4099) at select.c:268
#16 0x080c6443 in list_select (conf=0x80477d0, key=13) at select.c:425
#17 0x080c660f in list_select_loop (conf=0x80477d0) at select.c:486
#18 0x080bde0a in choose_board (newflag=1, boardprefix=0xd10a27f5 "0", group=0, favmode=0)
at boards_t.c:1437
#19 0x080ba4d2 in EGroup (cmd=0xd10a2567 "0BBS") at boards_t.c:23
#20 0x080883bf in domenu (menu_name=0xd10a1f61 "M_EGROUP") at comm_lists.c:651
#21 0x080883bf in domenu (menu_name=0x810ef48 "TOPMENU") at comm_lists.c:651
#22 0x080cbe6c in main_bbs (convit=0, argv=0x8047e78 "bbsd:hutu") at newmain_single.c:1141
#23 0x080c4c14 in bbs_main (argv=0x8047e78 "bbsd:hutu") at bbsd_single.c:771
#24 0x080c4ddb in bbs_standalone_main (argv=0x8047e78 "bbsd:hutu") at bbsd_single.c:914
#25 0x080c4f17 in main (argc=3, argv=0x8047d98) at bbsd_single.c:1009
(gdb) frame 6
#6 0x080654bf in post_article (conf=0x8046e20, q_file=0x80f7f8a "", re_file=0x0) at bbs.c:2869
2869 returnvalue =
(gdb) i lo
post_file = {filename = "M.1141726563.1j\000\000\000\000", id = 0, groupid = 0, reid = 0,
o_bid = 0, o_id = 0, o_groupid = 0, o_reid = 0, innflag = "LL",
owner = "hutu\000\000\000\000\000\000\000\000\000", eff_size = 0, posttime = 0, attachment = 0,
title = "ok", '\0' <repeats 57 times>, accessed = "\000\000\000"}
filepath = "boards/test/M.1141726563.1j", '\0' <repeats 17 times>, "0[本站] 新手操练区", '\0' <repeats 12 times>
buf = "ok\000tts\000e纈\004\b\026\b\000[1 \002\000\000\000\002\000\000\000\002\000\000\000\000\000\000\000衜\004\bHi\004\b\214i\004\b\210i\004\b\004\b鴠\004\bk颸020\b!\000\000\000\004\000\000\000╥\004\bB縗n\ba蚛r裓000\000\000\000?\025\bN\005\000\000覩\000\000\004\000\000\000\210i\004\b犎\f\b\000\000\000\000?\025\bN\005\000\0000璡n\bO\000\000\000\027\000\000\000\bk\004\b8璡n\bES] 衜\004\b\005\000\000\000\004\b\e[33m44m(\000\000\000痄\016\b\023\000\000\000\026\b豮\004\b\016\b \e[1;33m"...
buf2 = "\e[1;32mP\e[m使用模板，\e[1;32mb\e[m回复到信箱，\e[1;32mT\e[m改标题，\e[1;32mEnter\e[m继续: \000h\004\bPi\004\b\034襖026\b\e[4B\0003m\000\004\000\000\000\004\000\000\000\000\000\000\000朗W衆230h\004\bi絓n\b1;\000\b\000\020\000\000!裓000?熏h\004\b\001\000\000\000\000\000\000\000衜\004\b\e[9C\000i\004\b\000?裓020i\004\b\bi\004\b[i\004\b\220I!裺\000\000\000\000\000\000\000(瞈e?...
buf3 = "引言模式 [S]\000f\b餲\004\b\035\000\000H\030h\004\b帼\f\bH\000\000\000dh\004\b鴊\004\bi絓n\b\004\000\000\000\000\020\000\000>\200\017\b鱣\004\b\e[20;2H\000覩\000\000彼\f\b"
buf4 = "ok\000\b(瞈e裓206\200\017\b詆\004\b蘥\004\b鱣\004\b?\177\005j\004\b\002\000\000\000\001?裓230i\004\b|\004\006\b竒\004\bΦ\e裠骪020\b蘥\004\b╣\004\b\004\000\000\000\025\000\000\000鱣\004\b"
use_tmpl = 0
aborted = 1
anonyboard = 0
replymode = 0
ans = "\000g\004\b胕\n\b"
ooo = 0 '\0'
include_mode = 83 'S'
bp = (struct boardheader *) 0xd1041680
eff_size = 0
nUpload = 0
ai = {{
---Type <return> to continue, or q <return> to quit---
name = "\202\0014衆001", '\0' <repeats 15 times>, "╝\004\b9t\b\202\0014\000\000c\004\b╝\004\b\216\000\n\b\202\0014衆000\000\000\0008e\004\b萬\004\b", offset = 0, length = 134505639,
size = 135295505}, {
name = "d\000\000\000d\000\000\000I\000\000\000\202\0014衆017\000\000\000\000\000\000\000Hh\004\bs\v\n\b\017\000\000\000\000\000\000\000\000\0004绪\n\n\b\177\002\000\000\000\001\000\000", offset = 0, length = 0, size = 0}, {
name = "\224\002!裓000\000\000\000\000\000\000\000\000?裓000b\004\ba_\031裓016", '\0' <repeats 11 times>, "\017\000\000\000\030f\004\b鋅b\032?╘037养}\004\bT}\004\b\000??, offset = 0,
length = 135430235, size = 0}, {
name = "\000\000\000\000\224\002!裓000\000\000\000\004\b\000?裀b\004\ba_\031裓210\002!养}\004\bT}\004\b\000?裩f\004\b鋅b\032?╘037养}\004\bT}\004\b", offset = -786370560, length = 1,
size = 0}, {
name = "\000\000\000\000\000\000\000\000xb5\000\000\000\000\000e偌C\000\000\000\000\001\000\000\000\000readtre\000\000\000\000\000\000\000\000M鸺C\000\000\000\000\000\000\000\000s\000\000\000\a\000\000", offset = 134508145, length = 0, size = 0}, {
name = "\017\207\020\b\000\000\000\000\000\000\000\000ni\000\000li\000\000\000\000\000\000'缂C\224\002!裓000\000\000\000\004\b\000?裓224\002!裓000\000\000\000\004\b\000?裓020c\004\b",
offset = -786866335, length = -801898496, size = 386}, {
name = "\000\0004?\0004?\0004衪\0004衭\0004衯\0004衱\0004衵\0004衺\0004小\0004衆005\0014衆006\0014衆224\002!裓000\000\000\000\004\b\000??, offset = -786365804, length = 0,
size = 134512290}, {
name = "\000?裵c\004\ba_\031裓210\002!养}\004\bT}\004\b\000?裓210g\004\b鋅b\032?╘037养}\004\bT}\004\b\000?裓000\000\000\000\001\000\000\000\000\000\000", offset = 0, length = 115,
size = 5}, {
name = "\237o\004\b\000\000\000\000\000\000\000\000\017\207\020\b\000\000\000\000\000\000\000\000\000o\004\bイ\e裓030o\004\b鴠\004\b覩\000\000\000?裓000\000\000\000\a\000\000\000\001\000\000\000\000\000\000", offset = 0, length = 0, size = 134508478}, {
name = "\210\200\022\b\001\000\000\000\000\000\000\000\000?裀o\004\bY鉢e裓000\000\000\000\000\000\000\000イ\e裓000\000\000\000\000\000\000\000\224\002!褆d\004\bxd\004\b磀\004\b@d\004\b",
offset = -786866335, length = 4, size = 134512120}, {
name = "T}\004\b\000?裩d\004\b(瞈e裓204G\000\000彼\f\b?\025\bj襖026\b\001\000\000\000磀\004\b癲\004\b\001\000\000\000\224\002!裓000\000\000\000\004\b\000??, offset = 134505616,
---Type <return> to continue, or q <return> to quit---
length = -786866335, size = 3508601480}, {
name = "鴠\004\bT}\004\b\000?穴h\004\b鋅b\032?╘037养}\004\bT}\004\b\000?裈}\004\b\000?裓e[4B\000\000\000\000\001\000\000\000\000\000\000\000\000\000\000", offset = 0, length = 0,
size = 135323019}, {
name = "\000\000\000\000\000\000\000\000\000see\000\000ner\000\000\000\000\000\000\000\003\004\031养}\004\bT}\004\b朗W需e\004\b-\000\000\000\016\000\000\0006\000\000\000\000\000\000\000\000\000\000", offset = 0, length = 2, size = 23}, {
name = "\001\000\000\000c\000\000\000\000\000\000\000/", '\0' <repeats 11 times>, "I\000\000\000\003\004\031养}\004\bT}\004\b朗W?f\004\b愎\n\bpe\004\bfg\004\b\002\000\000",
offset = 1136528878, length = 1, size = 1970566400}, {
name = "\000\000\000ee\000\000\00033\000裓000?牙p\004\b躤\004\b豦\004\b鬳\004\bV\t\000\000\000??\000\000\000\000??\000\000\000イ\e補蚛r裓000\000\000", offset = 135609537, length = 553,
size = 18308}, {
name = "\004\000\000\000豦\004\b犎\f\b\000\000\000\000?\025\b)\002\000\0000璡n\bN\000\000\000\027\000\000\000Xg\004\b8璡n\b\024q\004\b朗W?\000\000\000鬳\004\b\e[33", offset = 1832137837,
length = -786347613, size = 3508596736}, {
name = "\034f\004\bfF\016养}\004\b@羂023\b\000\000\000\000\000\000\f裓020g\004\b\034襖026\bxf\004]\002\000\000\000\004\000\000\000\004\000\000\000\000\000\000\000朗W蠿f\004\bi絓n\b",
offset = 134506267, length = 4096, size = 3508619683}, {
name = "\000?裭f\004\b\0211\031迅f\004\bB縗n\b\020g\004\bjg\004\b\000?研f\004\b萬\004\b\eg\004\b\220I!裺\000\000\000\000\000\000\000(瞈e讶颸020\b", offset = 134506168, length = 0, size = 1},
{
name = "蜂\020\b萬\004\b╢\004\b朗W恤\177\000\000\000\000\000\b\000\000\000\000\000\000hh\004\b\220耚f\b\000\b\000\000\000\000\000\000hh\004\b{耚f\b$\226\032燕f\004\b", offset = -786889725,
length = 0, size = 2}, {
name = "\000\000\000\000T}\004\b垂\n\b\020g\004\b磣\017\b\000\000\000\000k颸020\bk颸020\b\004\000\000\000\000\000\000\000\002]\rD\"鬨027养}\004\bT}\004\b朗W衕utu", offset = 1936029031,
length = 134506312, size = 134909908}}
mailback = 0
ret = 8
direct = "boards/test/.DIR\000`\004\b\023r\020\b\000\000\000\000\000\000\000\000\234=\nD\234=\nD\001\000\000\000\000urr\000ca\000xb\000\000\000\000\000\000bP\nDbP\nD\001\000\000\000\000utu\000ky\000---Type <return> to continue, or q <return> to quit---
e\000\000\000\000\000\000\000Bc\nDBc\nD\001\000\000\000\000utu\000\000a\00086\000\000\000\000\000\0007!\fDUA\fD\n\000\000\000\000utu\000ca\000e\000\000\000\000\000\000\000\224v\nD\224v\nD\001\000\000\000\000utu\000\000y\000\000\000\000\000\000\000\000\000w靄fD\223馶fD\004\000\000\000\000utu\000tree\000\000\000\000\000\000\000"...
cmdmode = 0
returnvalue = 1920299879
(gdb)
【 在 atppp (Big Mouse) 的大作中提到: 】
: 准备发文
: gdb挂上
: (gdb) b after_post
: ...................
--
修改:linton FROM 220.173.136.*
FROM 220.173.136.*