Revision 545c988b2018a593f24d291b66776a0d08525acd authored by Suresh Jayaraman on 06 December 2010, 08:15:50 UTC, committed by Steve French on 08 December 2010, 18:47:54 UTC
As the FIXME points out correctly, now filldir() itself returns -EOVERFLOW if it not possible to represent the inode number supplied by the filesystem in the field provided by userspace. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
1 parent 7d161b7
xfs_bit.h
/*
* Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_BIT_H__
#define __XFS_BIT_H__
/*
* XFS bit manipulation routines.
*/
/*
* masks with n high/low bits set, 64-bit values
*/
static inline __uint64_t xfs_mask64hi(int n)
{
return (__uint64_t)-1 << (64 - (n));
}
static inline __uint32_t xfs_mask32lo(int n)
{
return ((__uint32_t)1 << (n)) - 1;
}
static inline __uint64_t xfs_mask64lo(int n)
{
return ((__uint64_t)1 << (n)) - 1;
}
/* Get high bit set out of 32-bit argument, -1 if none set */
static inline int xfs_highbit32(__uint32_t v)
{
return fls(v) - 1;
}
/* Get high bit set out of 64-bit argument, -1 if none set */
static inline int xfs_highbit64(__uint64_t v)
{
return fls64(v) - 1;
}
/* Get low bit set out of 32-bit argument, -1 if none set */
static inline int xfs_lowbit32(__uint32_t v)
{
return ffs(v) - 1;
}
/* Get low bit set out of 64-bit argument, -1 if none set */
static inline int xfs_lowbit64(__uint64_t v)
{
__uint32_t w = (__uint32_t)v;
int n = 0;
if (w) { /* lower bits */
n = ffs(w);
} else { /* upper bits */
w = (__uint32_t)(v >> 32);
if (w && (n = ffs(w)))
n += 32;
}
return n - 1;
}
/* Return whether bitmap is empty (1 == empty) */
extern int xfs_bitmap_empty(uint *map, uint size);
/* Count continuous one bits in map starting with start_bit */
extern int xfs_contig_bits(uint *map, uint size, uint start_bit);
/* Find next set bit in map */
extern int xfs_next_bit(uint *map, uint size, uint start_bit);
#endif /* __XFS_BIT_H__ */
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