James Carlson wrote: > On Aug 17, 2009, at 7:29 PM, Nicolas Williams <Nicolas.Williams at sun.com> > wrote: >>> If I've misunderstood about the availability of daemon() in Linux, >>> please feel free to correct me. Otherwise I'd be punching the derail >>> button on this case. >> >> It's there in libc in RHEL5. > > It's older and more common than that. It's a BSD-ism.
Yep, the beast is quite old. The daemon() function is present in libc sources of 4.4BSD-Lite with a date of 1993. It can be also found in 4.3BSD-Reno with a date of 1990 but not in libc (in libutil). As for the other OSes and their libc's I made couple of source code tours and this is what I found: OS present in libc since --------------+--------------------------- OpenBSD 1.0 (1995) NetBSD 1.0 (1993) FreeBSD 2.0_ALPHA (1993) glibc 1.09.1 (1996, from BSD) From the Linux systems I have access to, it's present in Fedora 11 and Gentoo 1.12.11.1 and Ubuntu Dapper Drake. As for the other OSes where source code is not generally available, I also found it in the documentation of: OS documented in --------------+-------------------------- Mac OS X 10.4.11 (verified) QNX 6.3.0SP3 v.
