Simon Josefsson wrote: > Is the maximum string ever returned by gethostname bounded by > MAXHOSTNAMELEN?
I expect so. > It seems clear that FreeBSD isn't POSIX compliant here since > HOST_NAME_MAX needs to be provided, as far as I can tell. So, FreeBSD is POSIX compliant. See [1]: HOST_NAME_MAX is inside a section that begins with: "A definition of one of the symbolic constants in the following list shall be omitted from <limits.h> on specific implementations where the corresponding value is equal to or greater than the stated minimum, but is unspecified. This indetermination might depend on the amount of available memory space on a specific instance of a specific implementation. The actual value supported by a specific instance shall be provided by the sysconf() function." > I guess looking into FreeBSD libc would answer this. [2] simply makes a system call. In the kernel, it's really an access of an array of size MAXHOSTNAMELEN [3][4]. Bruno [1] http://www.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html [2] http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/libc/gen/gethostname.c [3] http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/kern/kern_mib.c [4] http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/sys/jail.h
