LFS_SEGWAIT(2)

NAME
lfs_segwait - wait until a segment is written

LIBRARY
libc

SYNOPSIS
#include <sys/types.h>
int
lfs_segwait(fsid_t *fsidp, struct timeval *tv);

DESCRIPTION
lfs_segwait() blocks until a new segment is acquired for writing by the filesystem specified by *fsidp or if *fsidp is -1, until a segment is acquired for writing by any LFS filesystem.

If timeout is non-zero, lfs_segwait() will return after timeout milliseconds regardless of whether a new segment has been designated for writing or not.

RETURN VALUES
lfs_segwait() returns 0 if a new segment was acquired; 1 if it timed out; or -1 on error.

ERRORS
An error return from lfs_segwait() indicates:

[EFAULT]
    fsidp points outside the process's allocated address space.

[EINTR]
    A signal was delivered before the time limit expired and before a new segment was designated for writing.

[EINVAL]
    The specified time limit is negative.

SEE ALSO
lfs_cleanerd(8), lfs_bmapv(2), lfs_markv(2), lfs_segclean(2)

HISTORY
The lfs_segwait() function call appeared in 4.4BSD.