6c61d032db
https://pubs.opengroup.org/onlinepubs/9699919799/functions/futimens.html https://www.daemon-systems.org/man/utimens.2.html Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
194 lines
6.9 KiB
C
194 lines
6.9 KiB
C
/****************************************************************************
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* include/sys/stat.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_SYS_STAT_H
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#define __INCLUDE_SYS_STAT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <time.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* mode_t bit settings (most of these do not apply to NuttX). This assumes
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* that the full size of a mode_t is 16-bits. (However, mode_t must be size
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* 'int' because it is promoted to size int when passed in varargs).
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*
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* TTTT ...U UUGG GOOO
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*
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* Bits 0-2: Permissions for others
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* Bits 3-5: Group permissions
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* Bits 6-8: Owner permissions
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* Bits 9-11: Not used
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* Bits 12-15: File type bits
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*/
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#define S_IXOTH (1 << 0) /* Bits 0-2: Permissions for others: RWX */
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#define S_IWOTH (1 << 1)
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#define S_IROTH (1 << 2)
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#define S_IRWXO (7 << 0)
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#define S_IXGRP (1 << 3) /* Bits 3-5: Group permissions: RWX */
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#define S_IWGRP (1 << 4)
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#define S_IRGRP (1 << 5)
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#define S_IRWXG (7 << 3)
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#define S_IXUSR (1 << 6) /* Bits 6-8: Owner permissions: RWX */
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#define S_IWUSR (1 << 7)
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#define S_IRUSR (1 << 8)
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#define S_IRWXU (7 << 6)
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#define S_IREAD S_IRUSR /* Obsolete synonym provided for BSD compatibility. */
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#define S_IWRITE S_IWUSR /* Obsolete synonym provided for BSD compatibility. */
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#define S_IEXEC S_IXUSR /* Obsolete synonym provided for BSD compatibility. */
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#define S_ISVTX (1 << 9) /* "Sticky" bit (not used) */
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#define S_ISGID (1 << 10) /* Set group ID bit (not used)*/
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#define S_ISUID (1 << 11) /* Set UID bit (not used) */
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#define S_IFIFO (1 << 12) /* Bits 12-15: File type bits (not all used) */
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#define S_IFCHR (2 << 12)
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#define S_IFSEM (3 << 12)
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#define S_IFDIR (4 << 12)
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#define S_IFMQ (5 << 12)
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#define S_IFBLK (6 << 12)
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#define S_IFSHM (7 << 12)
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#define S_IFREG (8 << 12)
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#define S_IFMTD (9 << 12)
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#define S_IFLNK (10 << 12)
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#define S_IFSOCK (12 << 12)
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#define S_IFMT (15 << 12)
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/* File type macros that operate on an instance of mode_t */
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#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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#define S_ISSEM(m) (((m) & S_IFMT) == S_IFSEM)
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#define S_ISMQ(m) (((m) & S_IFMT) == S_IFMQ)
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#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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#define S_ISSHM(m) (((m) & S_IFMT) == S_IFSHM)
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#define S_ISMTD(m) (((m) & S_IFMT) == S_IFMTD)
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#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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/* These are from POSIX.1b. If the objects are not implemented using separate
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* distinct file types, the macros always will evaluate to zero. Unlike the
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* other S_* macros the following three take a pointer to a `struct stat'
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* object as the argument.
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*/
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#define S_TYPEISSEM(buf) S_ISSEM((buf)->st_mode)
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#define S_TYPEISMQ(buf) S_ISMQ((buf)->st_mode)
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#define S_TYPEISSHM(buf) S_ISSHM((buf)->st_mode)
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/* Special value for tv_nsec field of timespec */
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#define UTIME_NOW ((1l << 30) - 1l)
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#ifndef __cplusplus
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# define UTIME_OMIT ((1l << 30) - 2l)
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#endif
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/* The following macros are required by POSIX to achieve backward
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* compatibility with earlier versions of struct stat.
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*/
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#define st_atime st_atim.tv_sec
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#define st_ctime st_ctim.tv_sec
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#define st_mtime st_mtim.tv_sec
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#if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
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# define stat64 stat
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# define fstat64 fstat
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# define lstat64 lstat
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# define fstatat64 fstatat
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#endif
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/****************************************************************************
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* Type Definitions
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****************************************************************************/
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/* This is the simplified struct stat as returned by stat() and fstat().
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* This structure provides information about a specific file or directory in
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* the file system.
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*/
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struct stat
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{
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/* Required, standard fields */
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dev_t st_dev; /* Device ID of device containing file */
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ino_t st_ino; /* File serial number */
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mode_t st_mode; /* File type, attributes, and access mode bits */
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nlink_t st_nlink; /* Number of hard links to the file */
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uid_t st_uid; /* User ID of file */
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gid_t st_gid; /* Group ID of file */
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dev_t st_rdev; /* Device ID (if file is character or block special) */
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off_t st_size; /* Size of file/directory, 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 modification */
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struct timespec st_ctim; /* Time of last status change */
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blksize_t st_blksize; /* Block size used for filesystem I/O */
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blkcnt_t st_blocks; /* Number of blocks allocated */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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int mkdir(FAR const char *pathname, mode_t mode);
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int mkfifo(FAR const char *pathname, mode_t mode);
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int stat(FAR const char *path, FAR struct stat *buf);
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int lstat(FAR const char *path, FAR struct stat *buf);
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int fstat(int fd, FAR struct stat *buf);
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int chmod(FAR const char *path, mode_t mode);
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int lchmod(FAR const char *path, mode_t mode);
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int fchmod(int fd, mode_t mode);
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int utimens(FAR const char *path, const struct timespec times[2]);
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int lutimens(FAR const char *path, const struct timespec times[2]);
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int futimens(int fd, const struct timespec times[2]);
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mode_t umask(mode_t mask);
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mode_t getumask(void);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_SYS_STAT_H */
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