HUGETLBFS_UNLINKED_FD - Online Linux Manual PageSection : 3
Updated : March 7, 2012

NAMEhugetlbfs_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);

DESCRIPTIONThese 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 VALUEOn success, a valid open file descriptor is returned. On failure, -1 is returned and errno may be set appropriately.

SEE ALSOgethugepagesize(3), gethugepagesizes(3), mkstemp(3), libhugetlbfs(7)

AUTHORSlibhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.
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