[1032] in bugtraq
fcntl() file locking under Solaris 2.4
daemon@ATHENA.MIT.EDU (Jas (Matthew K))
Wed Feb 22 00:18:07 1995
From: matt@uts.EDU.AU (Jas (Matthew K))
To: bugtraq@fc.net (Bugtraq Mailing List)
Date: Wed, 22 Feb 1995 14:57:26 +1100 (EST)
to all you coders out there be aware file locking behaves differently
for NFS file systems under solaris 2.4... be warned doing a ufs file
lock on a NFS file makes fcntl() hang.. it doesnt return an error, it
hangs.
anyway here is a snippet of code that does a work around..
instead of
fcntl(fd,F_SETLK,&info);
try this..
struct statvfs vfsbuf;
cmd=F_SETLK;
if(!fstatvfs(fd,&vfsbuf)&&!strcmp("nfs",vfsbuf.f_basetype))
cmd=F_RSETLK;
fcntl(fd,cmd,&info);
hope this helps..
Matt
P.S. i have posted patches for both pine and elm to the sun-managers list
--
#!/bin/sh
echo '16i[q]sa[ln0=aln100%Pln100/snlbx]sbA0D3F204445524F42snlbxq'|dc;exit
Matthew Keenan Systems Programmer Information Technology Division
University of Technology Sydney Australia
It's nice to be in a position where people apologize because they
assume there's humor in your work, based on past experience,
but they're not sure where it is. -- Rob Pike
