In message <200901260800.n0q80lkh017...@mail49.nsc.no>, Jan Arild =?iso-8859-1?
Q?Lindstr=F8m?= writes:
>
> Hi,
>
> just to clarify that Solaris really is different from Linux:
>
> ns12(root) / 503# su - named
> Sun Microsystems Inc. SunOS 5.10 Generic January 2005
> -bash-3.00$ ls -la /var/run/named/
> total 80
> drwxr-s--- 4 named named 307 Jan 26 08:22 .
> drwxr-xr-x 7 root sys 1285 Jan 26 00:52 ..
> -rw-r--r-- 1 named named 6 Jan 26 06:41 named.pid
> -bash-3.00$ mkdir /var/run/named
> mkdir: Failed to make directory "/var/run/named"; Permission denied
>
> dns-nms(root) ~ 1003# su - named
> -bash-3.1$ uname -sr
> Linux 2.6.18-53.1.13.el5
> (reverse-i-search)`': =
>
> -bash-3.1$ ls -la /var/run/named/
> total 20
> drwxr-s--- 3 named named 4096 Jan 26 08:48 .
> drwxr-sr-x 24 root root 4096 Jan 26 08:22 ..
> -rw-r--r-- 1 named named 6 Jan 26 08:48 named.pid
> -bash-3.1$ mkdir /var/run/named
> mkdir: cannot create directory `/var/run/named': File exists
>
> That is, when the diretory exists and is fully writable on Solaris 10, you =
> still get
> "Permission denied", while you on Linux get "File exists". =
>
>
> I'd say Solaris 10 first checks if the user have permissions to create the =
> directory =
>
> before it checks if it exists.
>
> So I would say the code for creating the pid-file has been changed between =
> 9.4.3 =
>
> and 9.6.0-P1, and that a bug has been introduced on Solaris.
It was changed as part of this change.
2486. [func] The default locations for named.pid and lwresd.pid
are now /var/run/named/named.pid and
/var/run/lwresd/lwresd.pid respectively.
This allows the owner of the containing directory
to be set, for "named -u" support, and allows there
to be a permanent symbolic link in the path, for
"named -t" support. [RT #18306]
> Regards
> Jan Arild Lindstr=F8m
>
>
>
> At 08:42 26/01/2009, Jan Arild Lindstr=F8m wrote:
>
> >Hi,
> >
> >I was going to upgrade from BIND 9.4.3 to BIND 9.6.0-P1, but run into a =
>
> >strange "bug" in BIND 9.6.0-P1.
> >
> >Exact same config for 9.4.3 and 9.6.0-P1, only added "new" to files that =
>
> >are written to (namednew.log, confignew.log and namednew.pid).
> >
> >OS: Solaris 10.
> >
> >Using:
> > pid-file "/var/run/named/namednew.pid";
> >
> >.. result in the following:
> >
> >namednew.log:
> >26-Jan-2009 08:14:22.723 general: couldn't mkdir /var/run/named/namednew.p=
> id': Permission denied
> >26-Jan-2009 08:14:22.728 general: exiting (due to early fatal error)
> >
> >BIND 9.6.0-P1 truss.out:
> >--CUT--
> >25123/65: stat("/dev/urandom", 0xFFFFFFFF79D0FA00) =3D 0
> >25123/65: open("/dev/urandom", O_RDONLY|O_NONBLOCK) =3D 9
> >25123/65: fcntl(9, F_GETFL) =3D 8320
> >25123/65: fcntl(9, F_SETFL, FOFFMAX|FNONBLOCK) =3D 0
> >25123/65: setgid(21) =3D 0
> >25123/65: setuid(21) =3D 0
> >25123/65: access(".", W_OK) =3D 0
> >25123/65: open("/var/log/namednew.log", O_WRONLY|O_APPEND|O_CREAT, 0=
> 666) =3D 10
> >25123/65: lseek(10, 0, SEEK_END) =3D 332
> >25123/65: close(10) =3D 0
> >25123/65: open("/var/log/confignew.log", O_WRONLY|O_APPEND|O_CREAT, =
> 0666) =3D 10
> >25123/65: lseek(10, 0, SEEK_END) =3D 0
> >25123/65: close(10) =3D 0
> >25123/65: mkdir("/var/run/named", 0755) Err#13 EAC=
> CES [ALL]
> >25123/65: stat("/var/log/namednew.log", 0xFFFFFFFF79D0F3C0) =3D 0
> >25123/65: open("/var/log/namednew.log", O_WRONLY|O_APPEND|O_CREAT, 0=
> 666) =3D 10
> >25123/65: lseek(10, 0, SEEK_END) =3D 332
> >25123/65: fstat(10, 0xFFFFFFFF79D0E540) =3D 0
> >25123/65: fstat(10, 0xFFFFFFFF79D0E410) =3D 0
> >25123/65: ioctl(10, TCGETA, 0xFFFFFFFF79D0E47C) Err#25 ENO=
> TTY
> >25123/65: write(10, 0x10502E754, 97) =3D 97
> >25123/65: 2 6 - J a n - 2 0 0 9 0 8 : 1 4 : 2 2 . 7 2 3 g e n=
> e r a l
> >25123/65: : c o u l d n ' t m k d i r / v a r / r u n / n a=
> m e d /
> >25123/65: n a m e d n e w . p i d ' : P e r m i s s i o n d e=
> n i e d
> >25123/65: \n
> >25123/65: write(10, 0x10502E754, 69) =3D 69
> >25123/65: 2 6 - J a n - 2 0 0 9 0 8 : 1 4 : 2 2 . 7 2 8 g e n=
> e r a l
> >25123/65: : e x i t i n g ( d u e t o e a r l y f a t a=
> l e r
> >25123/65: r o r )\n
> >25123/65: _exit(1)
> >
> >It fails because it tries to just create the /var/run/named directory inst=
> ead
> >of cheking if the directory exist and if it can write to it. =
>
> >
> >ns12(root) named 515# ls -la /var/run/named
> >total 40
> >drwxr-s--- 4 named named 307 Jan 26 06:51 ./
> >drwxr-xr-x 7 root sys 1285 Jan 26 00:52 ../
> >-rw-r--r-- 1 named named 6 Jan 26 06:41 named.pid
> >
> >So /var/run/named exists and is fully writable by user named.
> >
> >User "named" should of course not be able to crate diretories below
> >"/var/run". Especially since many other things on Solaris 10 uses that
> >directory also.
> >
> >
> >If I use:
> > pid-file "/var/run/named/named/namednew.pid";
> >
> >... everything works fine, since it now can run mkdir without getting "EAC=
> CES". =
>
> >Instead it gets "EEXIST" and is OK with that.
> >
> >BIND 9.6.0-P1 truss.out:
> >--CUT--
> >25404/65: stat("/dev/urandom", 0xFFFFFFFF79D0FA00) =3D 0
> >25404/65: open("/dev/urandom", O_RDONLY|O_NONBLOCK) =3D 9
> >25404/65: fcntl(9, F_GETFL) =3D 8320
> >25404/65: fcntl(9, F_SETFL, FOFFMAX|FNONBLOCK) =3D 0
> >25404/65: setgid(21) =3D 0
> >25404/65: setuid(21) =3D 0
> >25404/65: access(".", W_OK) =3D 0
> >25404/65: open("/var/log/namednew.log", O_WRONLY|O_APPEND|O_CREAT, 0=
> 666) =3D 10
> >25404/65: lseek(10, 0, SEEK_END) =3D 498
> >25404/65: close(10) =3D 0
> >25404/65: open("/var/log/confignew.log", O_WRONLY|O_APPEND|O_CREAT, =
> 0666) =3D 10
> >25404/65: lseek(10, 0, SEEK_END) =3D 0
> >25404/65: close(10) =3D 0
> >25404/65: mkdir("/var/run/named/named", 0755) Err#17 EEX=
> IST
> >25404/65: stat("/var/run/named/named/namednew.pid", 0xFFFFFFFF79D0F9=
> 80) Err#2 ENOENT
> >25404/65: unlink("/var/run/named/named/namednew.pid") Err#2 ENOE=
> NT
> >25404/65: open("/var/run/named/named/namednew.pid", O_WRONLY|O_CREAT=
> |O_EXCL, 0644) =3D 10
> >25404/65: fcntl(10, F_GETFD, 0x000001A4) =3D 0
> >25404/65: getpid() =3D 25404 =
> [25403]
> >25404/65: fstat(10, 0xFFFFFFFF79D0E9D0) =3D 0
> >25404/65: fstat(10, 0xFFFFFFFF79D0E8A0) =3D 0
> >25404/65: ioctl(10, TCGETA, 0xFFFFFFFF79D0E90C) Err#25 ENO=
> TTY
> >25404/65: write(10, " 2 5 4 0 4\n", 6) =3D 6
> >25404/65: close(10) =3D 0
> >--CUT--
> >
> >
> >Trussing 9.4.3 I see that it does it differently:
> >
> >--CUT--
> >25730/10: access(".", W_OK) =3D 0
> >25730/10: open("/var/log/namednew.log", O_WRONLY|O_APPEND|O_CREAT, 0=
> 666) =3D 10
> >25730/10: lseek(10, 0, SEEK_END) =3D 2625
> >25730/10: close(10) =3D 0
> >25730/10: open("/var/log/confignew.log", O_WRONLY|O_APPEND|O_CREAT, =
> 0666) =3D 10
> >25730/10: lseek(10, 0, SEEK_END) =3D 0
> >25730/10: close(10) =3D 0
> >25730/10: stat("/var/run/named/namednew.pid", 0xFFFFFFFF7D90F660) Er=
> r#2 ENOENT
> >25730/10: unlink("/var/run/named/namednew.pid") Err#2 ENOE=
> NT
> >25730/10: open("/var/run/named/namednew.pid", O_WRONLY|O_CREAT|O_EXC=
> L, 0644) =3D 10
> >25730/10: fcntl(10, F_GETFD, 0x000001A4) =3D 0
> >25730/10: getpid() =3D 25730 =
> [25729]
> >25730/10: fstat(10, 0xFFFFFFFF7D90E6B0) =3D 0
> >25730/10: fstat(10, 0xFFFFFFFF7D90E580) =3D 0
> >25730/10: ioctl(10, TCGETA, 0xFFFFFFFF7D90E5EC) Err#25 ENO=
> TTY
> >25730/10: write(10, " 2 5 7 3 0\n", 6) =3D 6
> >--CUT--
> >
> >
> >It seems that someone has "shorted" the code to create and/or check the pi=
> d-file.
> >
> >Maybe that "shortcut" will work on Linux, but it for sure does not work on=
> Solaris 10.
> >
> >Having to use .../named/named/... in the pid-file option is of course poss=
> ible, but I =
>
> >guess that it is not the way it is supposed to be...(?)...
> >
> >Help? Ideas?
> >
> >Regards
> >Jan Arild Lindstr=F8m
> >
> >_______________________________________________
> >bind-users mailing list
> >bind-users@lists.isc.org
> >https://lists.isc.org/mailman/listinfo/bind-users
>
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--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org
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