setlogmask() help requested

["Wright, Shayne (SAHO)" <Shaynew@saho.org>]

Hello

First off, I am not sure if my problem is related to the glibc library, the
C code, or to my
system setup, so I might not be asking my question of the correct mailing
list. If this is the case, please help me determine where I should look for
advice: gnu-egcs, alt.linux.*, etc.

My problem is with the following code segment, or more likely, my
expectation of the setlogmask function. According to the information I have,
I expect that:
logmask = setlogmask(LOG_UPTO(LOG_NOTICE)) will set the logmask such that
all log levels below LOG_NOTICE will be disregarded upon subsequent calls to
syslog.

For a test I have the following test program.

---
logmask.c
---
#include <syslog.h>
#include <stdio.h>
#include <unistd.h>

int main()
{ 
  int logmask;

  openlog("logmask", LOG_PID|LOG_CONS, LOG_USER);
  syslog(LOG_INFO, "information message, pid = %d", getpid());
  syslog(LOG_DEBUG, "debug message, should appear");
  logmask = setlogmask(LOG_UPTO(LOG_NOTICE));
  syslog(LOG_DEBUG, "debug message, should not appear");

  exit (0);
}


Now my expectation is that the first LOG_DEBUG call to syslog would be
logged in /var/log/debug, but the second call would not. This is not the
case though. Both calls are logged.

---
tail /var/log/debug
---
	Jun 15 21:08:36 jazz logmask[1944]: debug message, should appear
	Jun 15 21:08:36 jazz logmask[1944]: debug message, should not appear

Could someone tell me if the problem lies in my code, my expectation of the
code, the development tools, or my Linux system configuration. I can find no
setlogmask man pages on my system, and only limited documentation on the
net.

System details follow:

---
uname -a
---
	Linux jazz 2.0.29 #1 Fri Mar 7 18:25:54 PST 1997 i486

---
gcc --version
---
	egcs-2.90.29 980515 (egcs-1.0.3 release)

---
ldd logmask
---
	libc.so.6 => /lib/libc.so.6 (0x40003000)
	/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x00000000)

Many thanks,
Take care,
Shayne