2019-06-03 12:44:50 +07:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2012-03-05 18:49:31 +07:00
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/*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_STAT_H
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#define __ASM_STAT_H
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2012-10-11 17:05:13 +07:00
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#include <uapi/asm/stat.h>
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2012-03-05 18:49:31 +07:00
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2012-10-04 18:10:18 +07:00
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#ifdef CONFIG_COMPAT
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2012-03-05 18:49:31 +07:00
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y2038: globally rename compat_time to old_time32
Christoph Hellwig suggested a slightly different path for handling
backwards compatibility with the 32-bit time_t based system calls:
Rather than simply reusing the compat_sys_* entry points on 32-bit
architectures unchanged, we get rid of those entry points and the
compat_time types by renaming them to something that makes more sense
on 32-bit architectures (which don't have a compat mode otherwise),
and then share the entry points under the new name with the 64-bit
architectures that use them for implementing the compatibility.
The following types and interfaces are renamed here, and moved
from linux/compat_time.h to linux/time32.h:
old new
--- ---
compat_time_t old_time32_t
struct compat_timeval struct old_timeval32
struct compat_timespec struct old_timespec32
struct compat_itimerspec struct old_itimerspec32
ns_to_compat_timeval() ns_to_old_timeval32()
get_compat_itimerspec64() get_old_itimerspec32()
put_compat_itimerspec64() put_old_itimerspec32()
compat_get_timespec64() get_old_timespec32()
compat_put_timespec64() put_old_timespec32()
As we already have aliases in place, this patch addresses only the
instances that are relevant to the system call interface in particular,
not those that occur in device drivers and other modules. Those
will get handled separately, while providing the 64-bit version
of the respective interfaces.
I'm not renaming the timex, rusage and itimerval structures, as we are
still debating what the new interface will look like, and whether we
will need a replacement at all.
This also doesn't change the names of the syscall entry points, which can
be done more easily when we actually switch over the 32-bit architectures
to use them, at that point we need to change COMPAT_SYSCALL_DEFINEx to
SYSCALL_DEFINEx with a new name, e.g. with a _time32 suffix.
Suggested-by: Christoph Hellwig <hch@infradead.org>
Link: https://lore.kernel.org/lkml/20180705222110.GA5698@infradead.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-07-13 17:52:28 +07:00
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#include <linux/time.h>
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2012-03-05 18:49:31 +07:00
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#include <asm/compat.h>
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/*
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* struct stat64 is needed for compat tasks only. Its definition is different
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* from the generic struct stat64.
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*/
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struct stat64 {
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compat_u64 st_dev;
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unsigned char __pad0[4];
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#define STAT64_HAS_BROKEN_ST_INO 1
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compat_ulong_t __st_ino;
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compat_uint_t st_mode;
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compat_uint_t st_nlink;
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compat_ulong_t st_uid;
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compat_ulong_t st_gid;
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compat_u64 st_rdev;
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unsigned char __pad3[4];
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compat_s64 st_size;
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compat_ulong_t st_blksize;
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compat_u64 st_blocks; /* Number of 512-byte blocks allocated. */
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compat_ulong_t st_atime;
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compat_ulong_t st_atime_nsec;
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compat_ulong_t st_mtime;
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compat_ulong_t st_mtime_nsec;
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compat_ulong_t st_ctime;
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compat_ulong_t st_ctime_nsec;
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compat_u64 st_ino;
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};
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2012-10-04 18:10:18 +07:00
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#endif
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2012-03-05 18:49:31 +07:00
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#endif
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