openat
extern int openat(int fd, const char *path, int openMode, ...);
fFD = openat(fPackagesDirectory->DirectoryFD(), fFileName,
int fd = openat(fPackagesDirectory->DirectoryFD(),
FileDescriptorCloser fd(openat(packagesDirectory->DirectoryFD(),
int fd = openat(fPackagesDirectory->DirectoryFD(), ".", O_RDONLY);
fd = openat(parentFD, entryName, O_RDWR | O_CREAT | O_EXCL,
fd = openat(parentFD, entryName, O_RDONLY | O_NOTRAVERSE);
HIDDEN_FUNCTION(openat);
fd = openat(dirFD, fileName,
fd = openat(dirFD, fileName,
openat (fd, name, flags, mode)
openat (fd, name, flags, 0)
*doopen = openat(dfd, path, oflags, 0600);