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http://www.usenix.org/events/fast05/wips/slides/welch.pdf
-- STATLITE
statlite(const char *filename, struct statlite *buf);
fstatlite(int fd, struct statlite *buf);
lstatlite(const char *filename, struct statlite *buf);
* file size, mtime are optionally not guaranteed to be correct
* mask field to specify which fields you need to be correct
-- READDIR+
struct dirent_plus *readdirplus(DIR *dirp);
int readdirplus_r(DIR *dirp, struct dirent_plus *entry, struct dirent_plus **result);
struct dirent_lite *readdirlite(DIR *dirp);
int readdirlite_r(DIR *dirp, struct dirent_lite *entry, struct dirent_lite **result);
* plus returns lstat
* lite returns lstatlite
-- lazy i/o integrity
FIXME: currently missing call to flag an Fd/file has lazy. used to be O_LAZY on open, but no more.
* relax data coherency
* writes may not be visible until lazyio_propagate, fsync, close
lazyio_propagate(int fd, off_t offset, size_t count);
* my writes are safe
lazyio_synchronize(int fd, off_t offset, size_t count);
* i will see everyone else's propagated writes
-- read/write non-serial vectors
ssize_t readx(int fd, const struct iovec *iov, size_t iov_count, struct xtvec *xtv, size_t xtv_count);
ssize_t writex(int fd, const struct iovec *iov, size_t iov_count, struct xtvec *xtv, size_t xtv_count);
* like readv/writev, but serial
*
int lockg(int fd, int cmd, lgid_t *lgid)
group locks
int openg(char *path, int mode, fh_t *handle);
portable file handle
int sutoc(fh_t *fh);
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