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SubjectRe: showstopper race condition in sync() ??? [2.1.119|120]
On 16 Sep 1998, Michael Shields wrote:

> > "strace passwd" shows that passwd copies /etc/passwd into /etc/passwd-,
> > builds a new file /etc/passwd+, rm's /etc/passwd, then renames
> > /etc/passwd+ to /etc/passwd
> Why does it unlink /etc/passwd instead of doing an atomic rename(2) to
> replace it?

Sorry, it does uses rename (see the attached strace). But the problem is
not here : it is just after the rename() call, during the sync() call.
The attached trace is from a correctly working machine : the sync() call
returned and the program went on. On the faulting machine, the last line
of the strace file is :
"""
sync(
"""
Now, I got the exactly same problem with quotacheck(8) : failure to
return from sync(), sometimes, not always, not on every machine. Obviously
passwd(1) is not in fault (the only userland component I'd suspect would
be the (g)libc, but that would really be the last component).

(oh, on a side note : the affected machine is UP, but the problem
seems to happen with both a UP and a SMP kernel).

TIA
-- Cyrille

------------------------------
Zog Zog
execve("/usr/bin/passwd", ["passwd", "nobody"], [/* 17 vars */]) = 0
brk(0) = 0x8049bdc
open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 4
fstat(4, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 14374, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4000b000
close(4) = 0
open("/lib/libpwdb.so.0", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4000f000
munmap(0x4000f000, 4096) = 0
mmap(0, 264972, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x4000f000
mprotect(0x40023000, 183052, PROT_NONE) = 0
mmap(0x40023000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x13000) = 0x40023000
mmap(0x4002c000, 146188, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4002c000
close(4) = 0
open("/lib/libpam.so.0", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x40050000
munmap(0x40050000, 4096) = 0
mmap(0, 27288, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x40050000
mprotect(0x40056000, 2712, PROT_NONE) = 0
mmap(0x40056000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x5000) = 0x40056000
close(4) = 0
open("/lib/libpam_misc.so.0", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x40057000
munmap(0x40057000, 4096) = 0
mmap(0, 8864, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x40057000
mprotect(0x40059000, 672, PROT_NONE) = 0
mmap(0x40059000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x1000) = 0x40059000
close(4) = 0
open("/lib/libdl.so.2", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4005a000
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005b000
munmap(0x4005a000, 4096) = 0
mmap(0, 9256, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x4005c000
mprotect(0x4005e000, 1064, PROT_NONE) = 0
mmap(0x4005e000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x1000) = 0x4005e000
close(4) = 0
open("/lib/libc.so.6", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4005a000
munmap(0x4005a000, 4096) = 0
mmap(0, 670580, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x4005f000
mprotect(0x400f0000, 76660, PROT_NONE) = 0
mmap(0x400f0000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x90000) = 0x400f0000
mmap(0x400f7000, 47988, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400f7000
close(4) = 0
open("/lib/libcrypt.so.1", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4005a000
munmap(0x4005a000, 4096) = 0
mmap(0, 181668, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x40103000
mprotect(0x40108000, 161188, PROT_NONE) = 0
mmap(0x40108000, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x4000) = 0x40108000
mmap(0x40129000, 26020, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40129000
close(4) = 0
open("/lib/libnsl.so.1", O_RDONLY) = 4
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 4, 0) = 0x4005a000
munmap(0x4005a000, 4096) = 0
mmap(0, 21980, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x40130000
mprotect(0x40134000, 5596, PROT_NONE) = 0
mmap(0x40134000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 4, 0x3000) = 0x40134000
close(4) = 0
mprotect(0x4000f000, 81920, PROT_READ|PROT_WRITE) = 0
mprotect(0x4000f000, 81920, PROT_READ|PROT_EXEC) = 0
personality(0 /* PER_??? */) = 0
getpid() = 2367
getuid() = 0
brk(0) = 0x8049bdc
brk(0x8049c6c) = 0x8049c6c
brk(0x804a000) = 0x804a000
stat("/etc/pam.d", {st_mode=S_ISGID, st_size=0, ...}) = 0
open(0x8049d10, O_RDONLY) = 4
fstat(4, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005a000
read(4, "#%PAM-1.0\nauth required\t"..., 4096) = 239
open("/lib/security/pam_pwdb.so", O_RDONLY) = 5
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 5, 0) = 0x40136000
munmap(0x40136000, 4096) = 0
mmap(0, 26260, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x40136000
mprotect(0x4013c000, 1684, PROT_NONE) = 0
mmap(0x4013c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x5000) = 0x4013c000
close(5) = 0
brk(0x804b000) = 0x804b000
open("/lib/security/pam_cracklib.so", O_RDONLY) = 5
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 5, 0) = 0x4013d000
munmap(0x4013d000, 4096) = 0
mmap(0, 20048, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x4013d000
mprotect(0x4013f000, 11856, PROT_NONE) = 0
mmap(0x4013f000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x1000) = 0x4013f000
mmap(0x40140000, 7760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40140000
close(5) = 0
open("/usr/lib/libcrack.so.2", O_RDONLY) = 5
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 5, 0) = 0x40142000
munmap(0x40142000, 4096) = 0
mmap(0, 43020, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x40142000
mprotect(0x40148000, 18444, PROT_NONE) = 0
mmap(0x40148000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0x5000) = 0x40148000
mmap(0x4014a000, 10252, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4014a000
close(5) = 0
read(4, "", 4096) = 0
close(4) = 0
munmap(0x4005a000, 4096) = 0
open("/etc/pam.d/other", O_RDONLY) = 4
fstat(4, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005a000
read(4, "#%PAM-1.0\nauth required "..., 4096) = 210
open("/lib/security/pam_deny.so", O_RDONLY) = 5
mmap(0, 4096, PROT_READ, MAP_PRIVATE, 5, 0) = 0x4014d000
munmap(0x4014d000, 4096) = 0
mmap(0, 5540, PROT_READ|PROT_EXEC, MAP_PRIVATE, 5, 0) = 0x4014d000
mprotect(0x4014e000, 1444, PROT_NONE) = 0
mmap(0x4014e000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 5, 0) = 0x4014e000
close(5) = 0
read(4, "", 4096) = 0
close(4) = 0
munmap(0x4005a000, 4096) = 0
time(NULL) = 905927102
stat("/usr/lib/cracklib_dict.pwd", {st_mode=0, st_size=0, ...}) = 0
open("/etc/pwdb.conf", O_RDONLY) = 4
fstat(4, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005a000
read(4, "#\n# This is the configuration f"..., 4096) = 134
read(4, "", 4096) = 0
close(4) = 0
munmap(0x4005a000, 4096) = 0
getrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
getuid() = 0
open("/etc/passwd", O_RDONLY) = 4
fstat(4, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005a000
read(4, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 597
close(4) = 0
munmap(0x4005a000, 4096) = 0
time(NULL) = 905927102
time(NULL) = 905927102
time(NULL) = 905927102
time(NULL) = 905927102
time(NULL) = 905927102
time(NULL) = 905927102
time(NULL) = 905927102
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
time(NULL) = 905927102
getrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
time([905927102]) = 905927102
write(2, "New UNIX password: ", 19) = 19
ioctl(0, SNDCTL_TMR_CONTINUE, {B9600 opost isig icanon -echo ...}) = 0
read(0, "zork\n", 511) = 5
ioctl(0, SNDCTL_TMR_STOP, {B9600 opost isig icanon echo ...}) = 0
write(2, "\n", 1) = 1
open("/usr/lib/cracklib_dict.pwd", O_RDONLY) = 4
open("/usr/lib/cracklib_dict.pwi", O_RDONLY) = 5
open("/usr/lib/cracklib_dict.hwm", O_RDONLY) = 6
fstat(5, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4005a000
read(5, "1Vwp=\261\0\0\20\0\0\0\0\0\0\0G\0"..., 4096) = 4096
fstat(6, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4014f000
read(6, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 1024
write(2, "BAD PASSWORD: it is too short\n", 30) = 30
getuid() = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
time([905927108]) = 905927108
write(2, "Retype new UNIX password: ", 26) = 26
ioctl(0, SNDCTL_TMR_CONTINUE, {B9600 opost isig icanon -echo ...}) = 0
read(0, "zork\n", 511) = 5
ioctl(0, SNDCTL_TMR_STOP, {B9600 opost isig icanon echo ...}) = 0
write(2, "\n", 1) = 1
brk(0x804c000) = 0x804c000
open("/etc/pwdb.conf", O_RDONLY) = 7
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(7, "#\n# This is the configuration f"..., 4096) = 134
read(7, "", 4096) = 0
close(7) = 0
munmap(0x40150000, 4096) = 0
getrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
getuid() = 0
time([905927110]) = 905927110
open("/etc/passwd", O_RDONLY) = 7
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(7, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 597
close(7) = 0
munmap(0x40150000, 4096) = 0
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
geteuid() = 0
geteuid() = 0
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
open("/etc/passwd", O_RDONLY) = 7
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(7, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 597
read(7, "", 4096) = 0
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
close(7) = 0
munmap(0x40150000, 4096) = 0
getpid() = 2367
open("/etc/pwd.%d.2367", O_WRONLY|O_CREAT|O_EXCL, 0600) = 7
getpid() = 2367
write(7, "2367\0", 5) = 5
close(7) = 0
link("/etc/pwd.%d.2367", "/etc/passwd.lock") = 0
stat("/etc/pwd.%d.2367", {st_mode=S_ISGID|S_ISVTX, st_size=0, ...}) = 0
unlink("/etc/pwd.%d.2367") = 0
open("/etc/passwd", O_RDWR) = 7
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(7, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 597
read(7, "", 4096) = 0
getpid() = 2367
fstat(7, {st_mode=0, st_size=0, ...}) = 0
unlink("/etc/passwd-") = -1 ENOENT (No such file or directory)
umask(0777) = 022
open("/etc/passwd-", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 8
umask(022) = 0777
lseek(7, 0, SEEK_SET) = 0
read(7, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 597
fstat(8, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40151000
read(7, "", 4096) = 0
write(8, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 597) = 597
close(8) = 0
munmap(0x40151000, 4096) = 0
chown("/etc/passwd-", 0, 0) = 0
chmod("/etc/passwd-", 0100644) = 0
utime("/etc/passwd-", [98/09/16-08:25:10, 98/09/14-11:06:02]) = 0
close(7) = 0
munmap(0x40150000, 4096) = 0
umask(0777) = 022
open("/etc/passwd+", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 7
umask(022) = 0777
chown("/etc/passwd+", 0, 0) = 0
chmod("/etc/passwd+", 0100644) = 0
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
write(7, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 609) = 609
close(7) = 0
munmap(0x40150000, 4096) = 0
rename("/etc/passwd+", "/etc/passwd") = 0
sync() = 0
getpid() = 2367
unlink("/etc/passwd.lock") = 0
time(NULL) = 905927110
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
getuid() = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
ioctl(0, TCGETS, {B9600 opost isig icanon echo ...}) = 0
fstat(0, {st_mode=S_ISVTX|0400, st_size=0, ...}) = 0
open("/dev", O_RDONLY|O_NONBLOCK) = 7
fcntl(7, F_SETFD, FD_CLOEXEC) = 0
fstat(7, {st_mode=0, st_size=0, ...}) = 0
brk(0x804e000) = 0x804e000
lseek(7, 0, SEEK_CUR) = 0
getdents(7, /* 68 entries */, 3933) = 1100
lseek(7, 0, SEEK_CUR) = 1024
getdents(7, /* 71 entries */, 3933) = 1208
lseek(7, 0, SEEK_CUR) = 2048
getdents(7, /* 75 entries */, 3933) = 1200
lseek(7, 0, SEEK_CUR) = 3072
getdents(7, /* 68 entries */, 3933) = 1224
lseek(7, 0, SEEK_CUR) = 4096
getdents(7, /* 57 entries */, 3933) = 1216
lseek(7, 0, SEEK_CUR) = 5120
getdents(7, /* 56 entries */, 3933) = 1180
lseek(7, 0, SEEK_CUR) = 6144
getdents(7, /* 75 entries */, 3933) = 1208
lseek(7, 0, SEEK_CUR) = 7168
getdents(7, /* 64 entries */, 3933) = 1024
lseek(7, 0, SEEK_CUR) = 8192
getdents(7, /* 64 entries */, 3933) = 1024
lseek(7, 0, SEEK_CUR) = 9216
getdents(7, /* 64 entries */, 3933) = 1024
lseek(7, 0, SEEK_CUR) = 10240
getdents(7, /* 68 entries */, 3933) = 1100
lseek(7, 0, SEEK_CUR) = 11264
getdents(7, /* 76 entries */, 3933) = 1228
lseek(7, 0, SEEK_CUR) = 12288
getdents(7, /* 77 entries */, 3933) = 1300
lseek(7, 0, SEEK_CUR) = 13312
getdents(7, /* 64 entries */, 3933) = 1204
lseek(7, 0, SEEK_CUR) = 14336
getdents(7, /* 64 entries */, 3933) = 1024
lseek(7, 0, SEEK_CUR) = 15360
getdents(7, /* 64 entries */, 3933) = 1024
stat("/dev/ttyp0", {st_mode=S_ISVTX|0400, st_size=0, ...}) = 0
close(7) = 0
open("/var/run/utmp", O_RDWR) = 7
lseek(7, 0, SEEK_SET) = 0
fcntl(7, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(7, "\10\0\0\0\4\0\0\0\0\0\0\0\0\0\0\0"..., 384) = 384
read(7, "\1\0\0\0003N\0\0~\0\0\0\0\0\0\0\0"..., 384) = 384
read(7, "\10\0\0\0006\0\0\0\0\0\0\0\0\0\0"..., 384) = 384
read(7, "\10\0\0\0\225\1\0\0\0\0\0\0\0\0\0"..., 384) = 384
read(7, "\7\0\0\0\226\1\0\0tty1\0\0\0\0\0"..., 384) = 384
read(7, "\6\0\0\0\304\1\0\0tty2\0\0\0\0\0"..., 384) = 384
read(7, "\6\0\0\0\230\1\0\0tty3\0\0\0\0\0"..., 384) = 384
read(7, "\6\0\0\0\231\1\0\0tty4\0\0\0\0\0"..., 384) = 384
read(7, "\6\0\0\0\232\1\0\0tty5\0\0\0\0\0"..., 384) = 384
read(7, "\6\0\0\0\233\1\0\0tty6\0\0\0\0\0"..., 384) = 384
read(7, "\7\0\0\0\323\1\0\0ttyp0\0\0\0\0\0"..., 384) = 384
fcntl(7, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
open("/etc/passwd", O_RDONLY) = 8
fstat(8, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(8, "root:2l0f2j2czyWpk:0:0:root:/roo"..., 4096) = 609
close(8) = 0
munmap(0x40150000, 4096) = 0
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/shadow", O_RDONLY) = -1 ENOENT (No such file or directory)
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
time(NULL) = 905927110
close(7) = 0
time([905927110]) = 905927110
open("/etc/localtime", O_RDONLY) = 7
fstat(7, {st_mode=0, st_size=0, ...}) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40150000
read(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 1088
close(7) = 0
munmap(0x40150000, 4096) = 0
getpid() = 2367
sigaction(SIGPIPE, {0x400cec90, [], SA_RESTART|SA_INTERRUPT|SA_NOMASK|0x797474}, {SIG_DFL}) = 0
socket(PF_UNIX, SOCK_DGRAM, 0) = 7
fcntl(7, F_SETFD, FD_CLOEXEC) = 0
connect(7, {sun_family=AF_UNIX, sun_path="/dev/log"}, 16) = -1 EPROTOTYPE (Protocol wrong type for socket)
close(7) = 0
socket(PF_UNIX, SOCK_STREAM, 0) = 7
fcntl(7, F_SETFD, FD_CLOEXEC) = 0
connect(7, {sun_family=AF_UNIX, sun_path="/dev/log"}, 16) = 0
send(7, "<38>Sep 16 08:25:10 PAM_pwdb[236"..., 85, 0) = 85
sigaction(SIGPIPE, {SIG_DFL}, NULL) = 0
close(7) = 0
getrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=RLIM_INFINITY}) = 0
munmap(0x40136000, 26260) = 0
munmap(0x4013d000, 20048) = 0
munmap(0x40142000, 43020) = 0
munmap(0x4014d000, 5540) = 0
write(2, "passwd: all authentication token"..., 55) = 55
munmap(0x4014f000, 4096) = 0
lseek(5, -4084, SEEK_CUR) = 12
munmap(0x4005a000, 4096) = 0
_exit(0) = ?
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  Last update: 2005-03-22 13:44    [from the cache]
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