From: ts <decoux@...>
Date: 2004-09-07T23:48:50+09:00
Subject: Re: Ruby/HPUX/syscall problem/bug

>>>>> "t" == tad bochan <tad.bochan@bnpparibas.com> writes:

t> mmfptr=syscall(SYS_mmap, addr, len, prot, flags, filedes.fileno, ofs)

 Well, I don't know for HP/UX but at least on linux you must give it a
 packed struct, for example


svg% cat b.rb
#!/usr/bin/ruby
SYS_mmap          = 90
PROT_NONE         = 0
PROT_USER         = 0
PROT_READ         = 1
PROT_WRITE        = 2
MAP_SHARED        = 1
fd = open("b.rb", "a+")
vec = [0, 80, PROT_READ, MAP_SHARED, fd.fileno, 0]
mmfptr = syscall(SYS_mmap, vec.pack("IIIIII"))
printf "0x%x\n", mmfptr
svg% 

svg% b.rb
0x40014000
svg% 


Guy Decoux