odd 'who -r' behavior in FC4
Steven C. Liu
sliu at steven-c-liu.com
Mon Jul 18 01:03:25 UTC 2005
Strace output (search for "utmp"):
[root at numenor tmp]# strace who -r
execve("/usr/bin/who", ["who", "-r"], [/* 22 vars */]) = 0
brk(0) = 0x84ed000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb7f62000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=48303, ...}) = 0
old_mmap(NULL, 48303, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f56000
close(3) = 0
open("/lib/libc.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\n\357\205"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1489572, ...}) = 0
old_mmap(0x84a000, 1219548, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
3, 0) = 0x84a000
old_mmap(0x96e000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x124000) = 0x96e000
old_mmap(0x972000, 7132, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x972000
close(3) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb7f55000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7f556c0, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
mprotect(0x96e000, 8192, PROT_READ) = 0
mprotect(0x846000, 4096, PROT_READ) = 0
munmap(0xb7f56000, 48303) = 0
brk(0) = 0x84ed000
brk(0x850e000) = 0x850e000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=48519712, ...}) = 0
mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7d55000
close(3) = 0
access("/var/run/utmpx", F_OK) = -1 ENOENT (No such file or
directory)
open("/var/run/utmp", O_RDWR) = 3
fcntl64(3, F_GETFD) = 0
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
_llseek(3, 0, [0], SEEK_SET) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\10\0\0\0\203\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(387, SIG_0) = -1 ESRCH (No such process)
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\2\0\0\0\0\0\0\0~\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\1\0\0\0005N\0\0~\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(20021, SIG_0) = -1 ESRCH (No such process)
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\10\0\0\0\262\5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(1458, SIG_0) = -1 ESRCH (No such process)
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\243\t\0\0tty1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2467, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\244\t\0\0tty2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2468, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\245\t\0\0tty3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2469, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\246\t\0\0tty4\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2470, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\247\t\0\0tty5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2471, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\6\0\0\0\250\t\0\0tty6\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2472, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\5\0\0\0\251\t\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2473, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\7\0\0\0\247\n\0\0:0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2727, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\7\0\0\0006\v\0\0pts/1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2870, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\7\0\0\0006\v\0\0pts/2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(2870, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "\7\0\0\0\357A\0\0pts/3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 384) =
384
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
kill(16879, SIG_0) = 0
alarm(0) = 0
rt_sigaction(SIGALRM, {0x944450, [], 0}, {SIG_DFL}, 8) = 0
alarm(1) = 0
fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(3, "", 384) = 0
fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
alarm(0) = 1
rt_sigaction(SIGALRM, {SIG_DFL}, NULL, 8) = 0
close(3) = 0
exit_group(0) = ?
[root at numenor tmp]#
-----Original Message-----
From: fedora-list-bounces at redhat.com
[mailto:fedora-list-bounces at redhat.com]On Behalf Of Steven C. Liu
Sent: Sunday, July 17, 2005 8:59 PM
To: Fedora List
Subject: odd 'who -r' behavior in FC4
Any idea what is causing 'who -r' not to work as normal?
---
[root at numenor Desktop]# cd /var/run
[root at numenor run]# ls -l utmp*
-rw-rw-r-- 1 root utmp 5376 Jul 16 23:12 utmp
[root at numenor run]# uname -a
Linux numenor.steven-c-liu.com 2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT
2005 i686 i686 i386 GNU/Linux
[root at numenor run]# who -r
[root at numenor run]# who /var/run/utmp -r
run-level 5 Jul 16 14:36 last=S
[root at numenor run]# who /var/run/utmpx -r
run-level 5 Jul 16 14:36 last=S
[root at numenor run]# ls -l /var/run/utmpx
ls: /var/run/utmpx: No such file or directory
[root at numenor run]#
---
TIA,
Steve
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