[php-src] Issue #8048: disk_*_space uses statvfs on macOS and it returns inaccruate results for some filesystems

Issue: https://github.com/php/php-src/issues/8048 Comment Author: risner Looking at macOS's Libc-1353.11.2, it does a conversion from statfs to statvfs in libc. It is an integer overflow issue. size x64 = 8; size x32 = 4 x64 = 60518056220; x32 = 388514076 For reliable results, on macOS the source should be statfs(2) instead of statvfs(3). I suspect this is a good practice to do whenever statfs is also available. Linux my be the exception, I found a number of statements regarding Linux doing statvfs correctly while researching this issue. Code snip of the function: /* Internal common conversion function */ static void cvt_statfs_to_statvfs(struct statfs *from, struct statvfs *to) { to->f_bsize = from->f_iosize; to->f_frsize = from->f_bsize; to->f_blocks = (fsblkcnt_t)from->f_blocks; to->f_bfree = (fsblkcnt_t)from->f_bfree;