RE: [Jailkit-users] issue with jk_jailuser on Mandriva 2006

[Steve Wegner]

OK here we go:

I did this and got 3 files, each are below.

Tracefile
Tracefile.20142
tracefile20143


Trace = 


open("/etc/shadow", O_RDONLY)           = 4
open("/etc/shadow", O_RDONLY)           = 4
open("/etc/localtime", O_RDONLY)        = 4
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
open("/dev/ptmx", O_RDWR)               = 4
statfs("/dev/pts", {f_type="DEVPTS_SUPER_MAGIC", f_bsize=4096,
f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0, 0},
f_namelen=255, f_frsize=4096}) = 0
stat64("/dev/pts/4", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4),
...}) = 0
statfs("/dev/pts/4", {f_type="DEVPTS_SUPER_MAGIC", f_bsize=4096,
f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0, 0},
f_namelen=255, f_frsize=4096}) = 0
stat64("/dev/pts/4", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4),
...}) = 0
open("/dev/pts/4", O_RDWR|O_NOCTTY)     = 6
readlink("/proc/self/fd/6", "/dev/pts/4", 4095) = 10
open("/etc/group", O_RDONLY)            = 7
stat64("/dev/pts/4", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4),
...}) = 0
chown32("/dev/pts/4", 512, 5)           = 0
open("/etc/passwd", O_RDONLY)           = 7
stat64("/var/log/lastlog", {st_mode=S_IFREG|0600, st_size=2336292, ...})
= 0
open("/var/log/lastlog", O_RDONLY|O_LARGEFILE) = 7
open("/etc/passwd", O_RDONLY)           = 7
readlink("/proc/self/fd/0", "/dev/pts/4", 4127) = 10
access("/var/run/utmpx", F_OK)          = -1 ENOENT (No such file or
directory)
open("/var/run/utmp", O_RDWR)           = 7
access("/var/log/wtmpx", F_OK)          = -1 ENOENT (No such file or
directory)
open("/var/log/wtmp", O_WRONLY)         = 7
stat64("/var/log/lastlog", {st_mode=S_IFREG|0600, st_size=2336292, ...})
= 0
open("/var/log/lastlog", O_RDWR|O_CREAT|O_LARGEFILE, 0600) = 7
open("/dev/null", O_RDONLY|O_LARGEFILE) = 0
open("/etc/passwd", O_RDONLY)           = 6
access("/var/run/utmpx", F_OK)          = -1 ENOENT (No such file or
directory)
open("/var/run/utmp", O_RDWR)           = 6
access("/var/log/wtmpx", F_OK)          = -1 ENOENT (No such file or
directory)
open("/var/log/wtmp", O_WRONLY)         = 6
chown32("/dev/pts/4", 0, 0)             = 0
chmod("/dev/pts/4", 0666)               = 0
--- SIGCHLD (Child exited) @ 0 (0) ---

--------------------------Tracefile.20142

open("/proc/sys/kernel/ngroups_max", O_RDONLY) = 5
open("/etc/group", O_RDONLY)            = 5
open("/etc/ld.so.cache", O_RDONLY)      = 5
open("/lib/libnss_nisplus.so.2", O_RDONLY) = 5
open("/var/nis/NIS_COLD_START", O_RDONLY) = -1 ENOENT (No such file or
directory)
--- SIGCHLD (Child exited) @ 0 (0) ---


Tracefile.20143

open("/dev/tty", O_RDWR|O_NOCTTY|O_LARGEFILE) = -1 ENXIO (No such device
or address)
open("/dev/tty", O_RDWR|O_NOCTTY|O_LARGEFILE) = -1 ENXIO (No such device
or address)
open("/dev/pts/4", O_RDWR|O_LARGEFILE)  = 7
open("/dev/tty", O_WRONLY|O_LARGEFILE)  = 8
stat64("/var/sftproot/./home/test/.hushlogin", 0xbfe8a6f4) = -1 ENOENT
(No such file or directory)
open("/etc/nologin", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or
directory)
stat64("/var/sftproot/./home/test/.hushlogin", 0xbfe89344) = -1 ENOENT
(No such file or directory)
chdir("/var/sftproot/./home/test")      = 0
stat64(".ssh/rc", 0xbfe8a3ec)           = -1 ENOENT (No such file or
directory)
stat64("/etc/ssh/sshrc", 0xbfe8a3ec)    = -1 ENOENT (No such file or
directory)
execve("/usr/sbin/jk_chrootsh", ["-jk_chrootsh"], [/* 10 vars */]) = 0
access("/etc/suid-debug", F_OK)         = -1 ENOENT (No such file or
directory)
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/tls/libc.so.6", O_RDONLY)    = 3
open("/etc/nsswitch.conf", O_RDONLY)    = 3
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/libnss_files.so.2", O_RDONLY) = 3
open("/etc/passwd", O_RDONLY)           = 3
open("/etc/group", O_RDONLY)            = 3
open("/etc/jailkit/jk_chrootsh.ini", O_RDONLY) = 3
chdir("/var/sftproot")                  = 0
getcwd("/var/sftproot", 255)            = 14
lstat64("/var/sftproot", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/var/sftproot/./home/test", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
open("/etc/localtime", O_RDONLY)        = 4
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
chroot("/var/sftproot")                 = 0
open("/etc/passwd", O_RDONLY)           = 5
open("/etc/group", O_RDONLY)            = 5
lstat64("/usr/sbin/jk_lsh", {st_mode=S_IFREG|0755, st_size=10984, ...})
= 0
chdir("/home/test")                     = 0
execve("/usr/sbin/jk_lsh", ["/usr/sbin/jk_lsh"], [/* 7 vars */]) = 0
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 4
open("/lib/tls/libc.so.6", O_RDONLY)    = 4
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/nsswitch.conf", O_RDONLY)    = 5
open("/etc/ld.so.cache", O_RDONLY)      = 5
open("/lib/libnss_files.so.2", O_RDONLY) = 5
open("/etc/group", O_RDONLY)            = 5
open("/etc/passwd", O_RDONLY)           = 5
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)
open("/etc/localtime", O_RDONLY)        = -1 ENOENT (No such file or
directory)

  

-----Original Message-----
From: address@hidden On Behalf
Of Olivier Sessink
Sent: Wednesday, October 25, 2006 12:37 PM
To: address@hidden
Subject: Re: [Jailkit-users] issue with jk_jailuser on Mandriva 2006

Steve Wegner wrote:
>  Olivier,
> I don't quite know what to make of the strace output. It is below in 
> its entirety, sorry for length. Also if I change shell to bash in real

> /etc/passwd sftp works great, but I can of course also get a shell and

> navigate around the server, which is not desired.

can you try the setup as described under "Advanced debugging a user
account in a jail" ? replace ssh with your sftp command. Search for the
sshd that has [priv] in the ps listing, and strace that process and its
children.

That will hopefully give the reason why sftp-server is not starting.

regards,
        Olivier



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