Hello,
I tested ClamAV 0.96 on a relatively recent Solaris 10 / i86pc machine
and all was well. Bringing it up on a production machine running a
somewhat older version of Solaris 10 (also i86pc), clamd gives the
warning:
WARNING: Solaris only supports 256 open files for 32-bit processes, you need at
least Solaris 10u4, or compile as 64-bit to support more!
WARNING: MaxThreads * MaxRecursion is too high: 320, open file descriptor limit
is: 255
I see the code in clamd/server-th.c which is producing this warning, and
forcing rlim.rlim_cur to 255. I see that the difference between the
systems is that <sys/fcntl.h> defines F_BADFD on the newer system, and
not on the old one.
The previous version of clamd on the older machine (ClamAV 0.95.1) gave
no warnings, and had "ulimit -n 512" in the startup script. In practice,
I find that many more desriptors can actually be opened. Running this
test code on the older machine shows this:
$ cat fd_open.c
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
int main() {
int fd; int lfd = -1;
#if defined(F_BADFD)
printf("F_BADFD is defined\n");
#endif
#if defined(_LP64)
printf("_LP64 is defined\n");
#endif
for (;;) {
if ((fd = open("/dev/null", O_RDONLY)) == -1) {
fprintf(stderr, "open fails (last fd %d) ", lfd);
perror("");
exit(1);
}
lfd = fd;
}
exit(0);
}
$ which cc
/opt/SUNWspro/bin/cc
$ cc -o fd_open fd_open.c
"fd_open.c", line 23: warning: statement not reached
$ ulimit -n
256
$ ./fd_open
open fails (last fd 255) Too many open files
$ ulimit -n 512
$ ./fd_open
open fails (last fd 511) Too many open files
Am I missing something? Thanks in advance,
Scott Larnach, Edinburgh University
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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