Hi Christoph, On Tue, Apr 28, 2009 at 11:21 PM, Christoph Bartoschek <bartoschek@xxxxxxxxxxxxxx> wrote: > Hi, > > I am using opensuse 11.1 with the most recent updates. The problem can also be > found on the page > http://www.kernel.org/doc/man-pages/online/pages/man2/uname.2.html > > The page states that the member domainname of struct utsname is only available > if _GNU_SOURCE is defined. > > However in /usr/include/sys/utsname.h I can only find: > > #if _UTSNAME_DOMAIN_LENGTH - 0 > /* Name of the domain of this node on the network. */ > # ifdef __USE_GNU > char domainname[_UTSNAME_DOMAIN_LENGTH]; > # else > char __domainname[_UTSNAME_DOMAIN_LENGTH]; > # endif > > and in /usr/include/bits/utsname.h: > > /* Length of the entries in `struct utsname' is 65. */ > #define _UTSNAME_LENGTH 65 > > /* Linux provides as additional information in the `struct utsname' > the name of the current domain. Define _UTSNAME_DOMAIN_LENGTH > to a value != 0 to activate this entry. */ > #define _UTSNAME_DOMAIN_LENGTH _UTSNAME_LENGTH > > > > This means that for linux the struct utname has always six members and the > last one is either named domainname or __domainname. All of what you say above is correct, but: > The manpage should state > this to make clear that a struct utsname has to be initialized like this: > > struct utsname name = {"", "", "", "", "", ""}; Since we only get a utsname structure back from the kernel, I'm not sure why we would need to care about initializing it as shown here. Can you say some more please. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ git://git.kernel.org/pub/scm/docs/man-pages/man-pages.git man-pages online: http://www.kernel.org/doc/man-pages/online_pages.html Found a bug? http://www.kernel.org/doc/man-pages/reporting_bugs.html -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
