All FreeBSD do not implement the function sysconf with arguments

[5u623l20]

_SC_GETGR_R_SIZE_MAX , _SC_TTY_NAME_MAX:_SC_GETPW_R_SIZE_MAX.

php use this sysconf() in:

main/main.c php_get_current_user()
main/fopen_wrappers.c php_fopen_primary_script()
ext/posix/posix.c posix_getpwnam(), posix_getpwuid(), posix_getgrnam(), posix_getgrgid()
ext/standard/filestat.c php_get_uid_by_name(), php_get_gid_by_name()

Somehow I mistakenly rebased on the previous PR branch. This is just a fresh continuation of:
#12995

@bukka Somehow I was not getting your comments until today I was rebasing the patches for php 8.3.2 and 8.2.15 in the FreeBSD ports tree. However I think this patch will answer that question.

[devnexen]

Thanks for doing the (re)work, looks clearer now, I ll have a look soon-ish.

[devnexen]

what makes you think _SC_PAGESIZE might not be defined ?

[5u623l20]

I can't recollect the exact reason at the moment but so far from my Goldfish memory I think it was that either Zend or zts redefines the page size with it's real size and checks in this similar fashion. Or it might have been too old when SC_PAGESIZE was not defined in FreeBSD at all. Because at one point there was only _SC_PAGE_SIZE rather then _SC_PAGESIZE

[devnexen]

I looked even at freebsd 5.0, seems it was already there.

[bukka]

So I have already asked about this and probably not in a clear way. So my main question was don't you just do this:

#if defined(__FreeBSD__)
	buflen = sysconf(_SC_PAGESIZE);
#else
	buflen = sysconf(_SC_GETGR_R_SIZE_MAX);
#endif
	if (buflen < 1) {	
		RETURN_FALSE;

The only reason that I could see for not doing this is that you somehow expect that this is going to be supported on FreeBSD in the future. Is that the case? If so, I'm not sure we should be predicting what might happen (especially if it's more likely not going to happen). But if you really think that it's quite likely, then I'm fine with it.

In such case you should still check the return value of of the second sysconf call even though it is unlikely to fail. So something like this should be done:

	buflen = sysconf(_SC_GETPW_R_SIZE_MAX);
	if (buflen < 1) {
#if defined(__FreeBSD__)
		buflen = sysconf(_SC_PAGESIZE);
		if (buflen < 1) {
			RETURN_FALSE;
		}
#else
		RETURN_FALSE;
#endif

[bukka]

Is there any update on this? It needs also rebase