syslogd+ /var/log/messages file empty

[greg h]

Denys,
thanks for your reply.
I also noticed that /dev/log was missing.
below the trace for strace logger "hello"

###################################################
# strace logger "hello"
execve("/usr/bin/logger", ["logger", "hello"], [/* 15 vars */]) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40005000
open("/lib/libc.so.0", O_RDONLY)        = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=239963, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40006000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\20\200\0\0004\0\0\0\214"..., 4096) = 4096
mmap2(NULL, 290816, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4000e000
mmap2(0x4000e000, 235450, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x4000e000
mmap2(0x4004f000, 4908, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x39) = 0x4004f000
mmap2(0x40051000, 13476, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40051000
close(3)                                = 0
munmap(0x40006000, 4096)                = 0
stat("/lib/ld-uClibc.so.0", {st_mode=S_IFREG|0755, st_size=21168, ...}) = 0
mprotect(0x4004f000, 4096, PROT_READ)   = 0
mprotect(0x4000c000, 4096, PROT_READ)   = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0
getuid32()                              = 0
geteuid32()                             = 0
brk(0)                                  = 0xa0000
brk(0xa1000)                            = 0xa1000
open("/etc/passwd", O_RDONLY)           = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbeb13bac) = -1 ENOTTY (Inappropriate ioctl for device)
brk(0xa2000)                            = 0xa2000
read(3, "root:x:0:0:root:/root:/bin/sh\ndae"..., 4096) = 562
close(3)                                = 0
rt_sigaction(SIGPIPE, {0x4002a804, [], 0x4000000 /* SA_??? */}, {SIG_DFL, [], 0}, 8) = 0
socket(PF_FILE, SOCK_DGRAM, 0)          = -1 ENOSYS (Function not implemented)
time([118])                             = 118
open("/etc/TZ", O_RDONLY)               = 3
read(3, "MST7MDT\n"..., 68)             = 8
read(3, ""..., 60)                      = 0
close(3)                                = 0
rt_sigaction(SIGPIPE, {SIG_DFL, [], 0x4000000 /* SA_??? */}, NULL, 8) = 0
exit(0)                                 = ?
# 
###################################################
greg




________________________________
De : Denys Vlasenko <vda.linux at googlemail.com>
À : busybox at busybox.net
Cc : greg h <grp62 at yahoo.fr>
Envoyé le : Jeudi, 14 Mai 2009, 0h06mn 41s
Objet : Re: syslogd+ /var/log/messages file empty

On Wednesday 13 May 2009 15:19, greg h wrote:
> Hi all,
> Here is my configuration:
> Platform : arm-at91 (sam9260)
> Kernel: 2.6.28.1
> Buildroot: 2009.02
> Busybox: 1.13.2
> 
> I noticed a problem with regards to the /var/log/messages file.
> Indeed this file is well created at startup but it is never updated (the size of this file is always at 0)
> 
> my inittab 
> # Logging junk
> null::sysinit:/bin/touch /var/log/messages
> null::respawn:/sbin/syslogd -n -m 0
> null::respawn:/sbin/klogd -n
> tty3::respawn:/usr/bin/tail -f /var/log/messages
> 
> any ideas ?

Maybe something mounted and populated a fresh ramfs-based
/dev ? This way, old /dev/log is inaccessible, but syslogd
doesn't know that!

What do you see when you do "strace logger Hello"?
--
vda



      
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