[Musix-users] [Re] : DON INSTALL UDEV! until you try strace :D (Marcos Guglielmetti)

Fri Jun 30 20:07:35 CEST 2006

Ooooo, carajo, its a socket connect() problem !
With strace on kate, we have :

execve("/usr/bin/kate", ["kate"], [/* 25 vars */]) = 0
uname({sys="Linux", node="julien", ...}) = 0
brk(0)                                  = 0x804a000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7eeb0
00
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7eea0
00
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=74612, ...}) = 0
mmap2(NULL, 74612, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7ed7000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)
open("/usr/lib/libkdeinit_kate.so", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\20$\0\000"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=24420, ...}) = 0
mmap2(NULL, 27300, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7ed000
0
mmap2(0xb7ed6000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3
, 0x5) = 0xb7ed6000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)
open("/usr/lib/libstdc++.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\307"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=892628, ...}) = 0
mmap2(NULL, 919172, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7def0
00
mmap2(0xb7ec5000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE,
3, 0xd5) = 0xb7ec5000
mmap2(0xb7eca000, 22148, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
-1, 0) = 0xb7eca000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)
open("/lib/tls/libm.so.6", O_RDONLY)    = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`3\0\000"..., 512) =
512
fstat64(3, {st_mode=S_IFREG|0644, st_size=149264, ...}) = 0
julien at julien:~$ tail -30 /tmp/strace-kate.txt
open("/usr/lib/i486-linux-gnu/cmov/libnss_db.so.2", O_RDONLY) = -1 ENOENT
(No such file or directory)
stat64("/usr/lib/i486-linux-gnu/cmov", 0xbfdfd170) = -1 ENOENT (No such file
or directory)
open("/usr/lib/i486-linux-gnu/libnss_db.so.2", O_RDONLY) = -1 ENOENT (No
such file or directory)
stat64("/usr/lib/i486-linux-gnu", {st_mode=S_IFDIR|0755, st_size=48, ...}) =
0
munmap(0xb5e53000, 74612)               = 0
open("/etc/ld.so.cache", O_RDONLY)      = 10
fstat64(10, {st_mode=S_IFREG|0644, st_size=74612, ...}) = 0
mmap2(NULL, 74612, PROT_READ, MAP_PRIVATE, 10, 0) = 0xb5e53000
close(10)                               = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)
open("/lib/tls/libnss_files.so.2", O_RDONLY) = 10
read(10, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220\33"..., 512) =
512
fstat64(10, {st_mode=S_IFREG|0644, st_size=42472, ...}) = 0
mmap2(NULL, 45720, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 10, 0) =
0xb5e47000
mmap2(0xb5e51000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 10, 0x9) = 0xb5e51000
close(10)                               = 0
munmap(0xb5e53000, 74612)               = 0
open("/etc/rpc", O_RDONLY)              = 10
fcntl64(10, F_GETFD)                    = 0
fcntl64(10, F_SETFD, FD_CLOEXEC)        = 0
fstat64(10, {st_mode=S_IFREG|0644, st_size=887, ...}) = 0
mmap2(NULL, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb5e27000
read(10, "# This file contains user readab"..., 131072) = 887
close(10)                               = 0
munmap(0xb5e27000, 131072)              = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 10
bind(10, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")},
16) = 0
connect(10, {sa_family=AF_INET, sin_port=htons(111), sin_addr=inet_addr("
127.0.0.1")}, 16

Quite similar with firefox, when I want to "save link...". I just put the
last lines.. :

socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 48
bind(48, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")},
16) = 0
connect(48, {sa_family=AF_INET, sin_port=htons(111), sin_addr=inet_addr("
127.0.0.1")}, 16)

strace is a real geek command. Is that how some begin reverse engineering?
Anyway..Hmm..I don't see why socket problem..:-)

I didn't intall udev..!

See u.
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