Re: php5 reads /etc/group on start

From: Date: Wed, 08 Mar 2006 21:05:52 +0000
Subject: Re: php5 reads /etc/group on start
References: 1  Groups: php.internals 
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kjc wrote:

What is it that php5.1.2 reads /etc/group on startup to setgroup?

My Solaris 10 boxes use LDAP as a NIS replacement so that we don't have to
manage individual group files on all the servers.

When I start Apache without php I see this the dtrace dtruss script:
log.dtruss-httpdcmd-nophp: 26471/1:  read(0xE,
"0\202\001\b\002\001\002d\202\001\001\004\034cn=cau,ou=group,ou=dev ...
<snip>
log.dtruss-httpdcmd-nophp:26483/1:  setgroups(0xA, 0x1001F20A0,

0x400)           = 0 0


times ten, for the ten (A) groups that the webuser is a member of, thus the
setgroups(0xA,.


BUT... When I LoadModule libphp5 I get this instead:

log.dtruss-httpdcmd: 25142/1:  open("/etc/group\0", 0x2000,

0x1B6)                = 15 0

log.dtruss-httpdcmd: 25142/1:  setgroups(0x2, 0x1002CCFB0,

0x400)                 = 0 0



Which is a grand total of 3 (2), one from /etc/group and the other is what
is actually associated with the LDAP user webuser but listed twice.

So-- why does PHP manually go and read /etc/group-- and why? And how can I
disable or fix that?


Obviously PHP doesn't read that file directly.  Figure out which libc call leads to that call and we might be able to help.

-Rasmus

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