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-.Dd October
-.Dt SYNC_VOLUME_NP 3
-.Os
-.Sh NAME
-.Nm sync_volume_np
-.Nd Sync a mounted filesystem
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In unistd.h
-.Ft int
-.Fn sync_volume_np "const char *path" "int flags"
-.Ft int
-.Fn fsync_volume_np "int fd" "int flags"
-.Sh DESCRIPTION
-The
-.Fn sync_volume_np
-function causes data and metadata on the filesystem containing
-.Ar path
-to be synced to disk; this may be any file or directory on that filesystem. The
-.Fn fsync_volume_np
-does the same thing, but using an open file descriptor for that
-filesystem.
-Both functions take a flags parameter, with the currently-defined
-options:
-.Bl -tag -width SYNC_VOLUME_FULLSYNC -offset indent
-.It SYNC_VOLUME_FULLSYNC
-Request that the data and metadata be written to the disk hardware;
-if not set, then the hardware may keep it in cache.
-.It SYNC_VOLUME_WAIT
-Wait for the data and metadata to be written; if not set, then
-it will return when the requests have been made.
-.El
-.Sh RETURN VALUES
-Both functions return 0 on success, and a non-zero error code on error.
-.Sh ERRORS
-The
-.Fn fsync_volume_np
-function may return
-.Er EBADF
-if the
-.Ar fd
-parameter is not a valid, open file descriptor.
-The
-.Fn sync_volume_np
-function may return errors if:
-.Bl -tag -width ENAMETOOLONG
-.It Bq Er EACCES
-Search permission is denied for a component of the path prefix.
-.It Bq Er EIO
-An I/O error occurs while reading from or writing to the file system.
-.It Bq Er ELOOP
-Too many symbolic links are encountered in translating the pathname.
-This is taken to be indicative of a looping symbolic link.
-.It Bq Er ENAMETOOLONG
-A component of a pathname exceeds {NAME_MAX} characters, or an entire path name exceeds {PATH_MAX} characters.
-.It Bq Er ENOENT
-The named file does not exist.
-.It Bq Er ENOTDIR
-A component of the path prefix is not a directory.
-.El