510ea843ba
A nice thing about POSIX 2008 is that it finally standardizes a way to obtain file access/modification/change times in sub-second precision, namely using struct timespec, which we already have for a very long time. Unfortunately POSIX uses different names. This commit adds compatibility macros, so existing code should still build properly. Also change all source code in the kernel to work without any of the compatibility macros. This makes it all a less ambiguous. I am also renaming st_birthtime to st_birthtim, even though it was a local extension anyway. It seems Cygwin also has a st_birthtim.
335 lines
11 KiB
C
335 lines
11 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stat.h 8.12 (Berkeley) 6/16/95
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* $FreeBSD$
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*/
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#ifndef _SYS_STAT_H_
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#define _SYS_STAT_H_
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#include <sys/cdefs.h>
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#include <sys/_timespec.h>
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#include <sys/_types.h>
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#ifndef _BLKSIZE_T_DECLARED
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typedef __blksize_t blksize_t;
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#define _BLKSIZE_T_DECLARED
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#endif
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#ifndef _BLKCNT_T_DECLARED
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typedef __blkcnt_t blkcnt_t;
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#define _BLKCNT_T_DECLARED
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#endif
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#ifndef _DEV_T_DECLARED
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typedef __dev_t dev_t;
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#define _DEV_T_DECLARED
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#endif
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#ifndef _FFLAGS_T_DECLARED
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typedef __fflags_t fflags_t;
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#define _FFLAGS_T_DECLARED
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#endif
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#ifndef _GID_T_DECLARED
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typedef __gid_t gid_t;
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#define _GID_T_DECLARED
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#endif
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#ifndef _INO_T_DECLARED
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typedef __ino_t ino_t;
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#define _INO_T_DECLARED
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#endif
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#ifndef _MODE_T_DECLARED
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typedef __mode_t mode_t;
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#define _MODE_T_DECLARED
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#endif
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#ifndef _NLINK_T_DECLARED
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typedef __nlink_t nlink_t;
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#define _NLINK_T_DECLARED
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#endif
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#ifndef _OFF_T_DECLARED
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typedef __off_t off_t;
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#define _OFF_T_DECLARED
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#endif
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#ifndef _UID_T_DECLARED
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typedef __uid_t uid_t;
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#define _UID_T_DECLARED
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#endif
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#if !defined(_KERNEL) && __BSD_VISIBLE
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/*
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* XXX We get miscellaneous namespace pollution with this.
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*/
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#include <sys/time.h>
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#endif
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#if __BSD_VISIBLE
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struct ostat {
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__uint16_t st_dev; /* inode's device */
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ino_t st_ino; /* inode's number */
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mode_t st_mode; /* inode protection mode */
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nlink_t st_nlink; /* number of hard links */
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__uint16_t st_uid; /* user ID of the file's owner */
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__uint16_t st_gid; /* group ID of the file's group */
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__uint16_t st_rdev; /* device type */
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__int32_t st_size; /* file size, in bytes */
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struct timespec st_atim; /* time of last access */
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struct timespec st_mtim; /* time of last data modification */
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struct timespec st_ctim; /* time of last file status change */
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__int32_t st_blksize; /* optimal blocksize for I/O */
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__int32_t st_blocks; /* blocks allocated for file */
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fflags_t st_flags; /* user defined flags for file */
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__uint32_t st_gen; /* file generation number */
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};
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#endif /* __BSD_VISIBLE */
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struct stat {
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__dev_t st_dev; /* inode's device */
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ino_t st_ino; /* inode's number */
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mode_t st_mode; /* inode protection mode */
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nlink_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of the file's owner */
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gid_t st_gid; /* group ID of the file's group */
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__dev_t st_rdev; /* device type */
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struct timespec st_atim; /* time of last access */
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struct timespec st_mtim; /* time of last data modification */
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struct timespec st_ctim; /* time of last file status change */
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off_t st_size; /* file size, in bytes */
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blkcnt_t st_blocks; /* blocks allocated for file */
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blksize_t st_blksize; /* optimal blocksize for I/O */
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fflags_t st_flags; /* user defined flags for file */
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__uint32_t st_gen; /* file generation number */
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__int32_t st_lspare;
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struct timespec st_birthtim; /* time of file creation */
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/*
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* Explicitly pad st_birthtim to 16 bytes so that the size of
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* struct stat is backwards compatible. We use bitfields instead
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* of an array of chars so that this doesn't require a C99 compiler
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* to compile if the size of the padding is 0. We use 2 bitfields
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* to cover up to 64 bits on 32-bit machines. We assume that
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* CHAR_BIT is 8...
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*/
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unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
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unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
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};
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#if __BSD_VISIBLE
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struct nstat {
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__dev_t st_dev; /* inode's device */
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ino_t st_ino; /* inode's number */
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__uint32_t st_mode; /* inode protection mode */
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__uint32_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of the file's owner */
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gid_t st_gid; /* group ID of the file's group */
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__dev_t st_rdev; /* device type */
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struct timespec st_atim; /* time of last access */
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struct timespec st_mtim; /* time of last data modification */
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struct timespec st_ctim; /* time of last file status change */
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off_t st_size; /* file size, in bytes */
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blkcnt_t st_blocks; /* blocks allocated for file */
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blksize_t st_blksize; /* optimal blocksize for I/O */
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fflags_t st_flags; /* user defined flags for file */
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__uint32_t st_gen; /* file generation number */
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struct timespec st_birthtim; /* time of file creation */
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/*
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* See above about the following padding.
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*/
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unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
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unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
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};
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#endif
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#ifndef _KERNEL
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#define st_atime st_atim.tv_sec
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#define st_mtime st_mtim.tv_sec
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#define st_ctime st_ctim.tv_sec
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#if __BSD_VISIBLE
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#define st_birthtime st_birthtim.tv_sec
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#endif
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/* For compatibility. */
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#if __BSD_VISIBLE
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#define st_atimespec st_atim
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#define st_mtimespec st_mtim
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#define st_ctimespec st_ctim
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#define st_birthtimespec st_birthtim
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#endif
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#endif /* !_KERNEL */
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#define S_ISUID 0004000 /* set user id on execution */
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#define S_ISGID 0002000 /* set group id on execution */
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#if __BSD_VISIBLE
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#define S_ISTXT 0001000 /* sticky bit */
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#endif
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#define S_IRWXU 0000700 /* RWX mask for owner */
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#define S_IRUSR 0000400 /* R for owner */
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#define S_IWUSR 0000200 /* W for owner */
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#define S_IXUSR 0000100 /* X for owner */
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#if __BSD_VISIBLE
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#define S_IREAD S_IRUSR
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#define S_IWRITE S_IWUSR
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#define S_IEXEC S_IXUSR
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#endif
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#define S_IRWXG 0000070 /* RWX mask for group */
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#define S_IRGRP 0000040 /* R for group */
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#define S_IWGRP 0000020 /* W for group */
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#define S_IXGRP 0000010 /* X for group */
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#define S_IRWXO 0000007 /* RWX mask for other */
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#define S_IROTH 0000004 /* R for other */
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#define S_IWOTH 0000002 /* W for other */
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#define S_IXOTH 0000001 /* X for other */
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#if __XSI_VISIBLE
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#define S_IFMT 0170000 /* type of file mask */
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#define S_IFIFO 0010000 /* named pipe (fifo) */
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#define S_IFCHR 0020000 /* character special */
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#define S_IFDIR 0040000 /* directory */
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#define S_IFBLK 0060000 /* block special */
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#define S_IFREG 0100000 /* regular */
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#define S_IFLNK 0120000 /* symbolic link */
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#define S_IFSOCK 0140000 /* socket */
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#define S_ISVTX 0001000 /* save swapped text even after use */
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#endif
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#if __BSD_VISIBLE
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#define S_IFWHT 0160000 /* whiteout */
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#endif
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#define S_ISDIR(m) (((m) & 0170000) == 0040000) /* directory */
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#define S_ISCHR(m) (((m) & 0170000) == 0020000) /* char special */
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#define S_ISBLK(m) (((m) & 0170000) == 0060000) /* block special */
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#define S_ISREG(m) (((m) & 0170000) == 0100000) /* regular file */
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#define S_ISFIFO(m) (((m) & 0170000) == 0010000) /* fifo or socket */
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#if __POSIX_VISIBLE >= 200112
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#define S_ISLNK(m) (((m) & 0170000) == 0120000) /* symbolic link */
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#define S_ISSOCK(m) (((m) & 0170000) == 0140000) /* socket */
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#endif
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#if __BSD_VISIBLE
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#define S_ISWHT(m) (((m) & 0170000) == 0160000) /* whiteout */
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#endif
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#if __BSD_VISIBLE
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#define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
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/* 7777 */
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#define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
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/* 0666 */
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#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
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#define S_BLKSIZE 512 /* block size used in the stat struct */
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/*
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* Definitions of flags stored in file flags word.
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*
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* Super-user and owner changeable flags.
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*/
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#define UF_SETTABLE 0x0000ffff /* mask of owner changeable flags */
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#define UF_NODUMP 0x00000001 /* do not dump file */
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#define UF_IMMUTABLE 0x00000002 /* file may not be changed */
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#define UF_APPEND 0x00000004 /* writes to file may only append */
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#define UF_OPAQUE 0x00000008 /* directory is opaque wrt. union */
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#define UF_NOUNLINK 0x00000010 /* file may not be removed or renamed */
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/*
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* Super-user changeable flags.
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*/
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#define SF_SETTABLE 0xffff0000 /* mask of superuser changeable flags */
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#define SF_ARCHIVED 0x00010000 /* file is archived */
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#define SF_IMMUTABLE 0x00020000 /* file may not be changed */
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#define SF_APPEND 0x00040000 /* writes to file may only append */
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#define SF_NOUNLINK 0x00100000 /* file may not be removed or renamed */
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#define SF_SNAPSHOT 0x00200000 /* snapshot inode */
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#ifdef _KERNEL
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/*
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* Shorthand abbreviations of above.
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*/
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#define OPAQUE (UF_OPAQUE)
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#define APPEND (UF_APPEND | SF_APPEND)
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#define IMMUTABLE (UF_IMMUTABLE | SF_IMMUTABLE)
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#define NOUNLINK (UF_NOUNLINK | SF_NOUNLINK)
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#endif
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#endif /* __BSD_VISIBLE */
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#ifndef _KERNEL
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__BEGIN_DECLS
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#if __BSD_VISIBLE
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int chflags(const char *, unsigned long);
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#endif
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int chmod(const char *, mode_t);
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#if __BSD_VISIBLE
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int fchflags(int, unsigned long);
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#endif
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#if __POSIX_VISIBLE >= 200112
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int fchmod(int, mode_t);
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#endif
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#if __POSIX_VISIBLE >= 200809
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int fchmodat(int, const char *, mode_t, int);
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#endif
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int fstat(int, struct stat *);
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#if __BSD_VISIBLE
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int lchflags(const char *, int);
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int lchmod(const char *, mode_t);
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#endif
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#if __POSIX_VISIBLE >= 200112
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int lstat(const char * __restrict, struct stat * __restrict);
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#endif
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int mkdir(const char *, mode_t);
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int mkfifo(const char *, mode_t);
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#if !defined(_MKNOD_DECLARED) && __XSI_VISIBLE
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int mknod(const char *, mode_t, dev_t);
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#define _MKNOD_DECLARED
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#endif
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int stat(const char * __restrict, struct stat * __restrict);
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mode_t umask(mode_t);
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#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809
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int fstatat(int, const char *, struct stat *, int);
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int mkdirat(int, const char *, mode_t);
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int mkfifoat(int, const char *, mode_t);
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#endif
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#if __BSD_VISIBLE || __XSI_VISIBLE >= 700
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int mknodat(int, const char *, mode_t, dev_t);
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#endif
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__END_DECLS
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#endif /* !_KERNEL */
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#endif /* !_SYS_STAT_H_ */
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