Thread: Re: [HACKERS] mmap and MAP_ANON
ocie@paracel.com wrote: > > Bruce Momjian wrote: > > > > Would people tell me what platforms do NOT support the MAP_ANON flag to > > the mmap() system call? You should find it in the mmap() manual page. > > Doesn't seem to appear in Linux (2.0.30 kernel). As another poster > commented, /dev/zero can be mapped for anonymous memory. although 'man mmap' does not say it, it is present in sys/mman.h on linux (at least 2.0.33) it is NOT present in Solaris x86 v.2.6 it is NOT present in SINIX v5.42 (UNIX(r) System V Release 4.1) -------------- Hannu Krosing
Hannu Krosing wrote: > > ocie@paracel.com wrote: > > > > Bruce Momjian wrote: > > > > > > Would people tell me what platforms do NOT support the MAP_ANON flag to > > > the mmap() system call? You should find it in the mmap() manual page. > > > > Doesn't seem to appear in Linux (2.0.30 kernel). As another poster > > commented, /dev/zero can be mapped for anonymous memory. > > although 'man mmap' does not say it, it is present in sys/mman.h on > linux (at least 2.0.33) It appears there, but using it causes mmap to return EINVAL. Ocie