HUGETLBFS_UNLINKED_FD(3) Library Functions Manual HUGETLBFS_UNLINKED_FD(3)
NAME
hugetlbfs_unlinked_fd, hugetlbfs_unlinked_fd_for_size - Obtain a file descriptor for a new unlinked file in hugetlbfs
SYNOPSIS
#include <hugetlbfs.h>
int hugetlbfs_unlinked_fd(void);
int hugetlbfs_unlinked_fd_for_size(long page_size);
DESCRIPTION
These functions return an open file descriptor for a unique, newly-created file in a hugetlbfs filesystem. To avoid leaking hugepages, the
file is unlinked automatically before the function returns.
For hugetlbfs_unlinked_fd, the default huge page size is used (see gethugepagesize(3)). For hugetlbfs_unlinked_fd_for_size, a valid huge
page size must be specified (see gethugepagesizes(3)).
RETURN VALUE
On success, a valid open file descriptor is returned. On failure, -1 is returned and errno may be set appropriately.
SEE ALSO
gethugepagesize(3), gethugepagesizes(3), mkstemp(3), libhugetlbfs(7)
AUTHORS
libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.
March 7, 2012 HUGETLBFS_UNLINKED_FD(3)