Joakim Nohlgård
7 years ago
4 changed files with 149 additions and 15 deletions
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/*
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* Copyright (C) 2016 Eistec AB |
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* |
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* This file is subject to the terms and conditions of the GNU Lesser |
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* General Public License v2.1. See the file LICENSE in the top level |
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* directory for more details. |
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*/ |
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/**
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* @file |
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* @brief POSIX compatible sys/stat.h definitions |
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se> |
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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 <time.h> /* for struct timespec */ |
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#include <sys/types.h> /* for fsblkcnt_t, fsfilcnt_t */ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/**
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* @brief File information |
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*/ |
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struct stat { |
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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; /**< Mode of file (see below). */ |
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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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/**
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* For regular files, the file size in bytes. |
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* For symbolic links, the length in bytes of the pathname contained in the |
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* symbolic link. |
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* For a shared memory object, the length in bytes. |
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* For a typed memory object, the length in bytes. |
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* For other file types, the use of this field is unspecified. |
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*/ |
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off_t st_size; |
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struct timespec st_atim; /**< Last data access timestamp. */ |
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struct timespec st_mtim; /**< Last data modification timestamp. */ |
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struct timespec st_ctim; /**< Last file status change timestamp. */ |
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/**
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* A file system-specific preferred I/O block size for this object. In some |
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* file system types, this may vary from file to file. |
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*/ |
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blksize_t st_blksize; |
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blkcnt_t st_blocks; /**< Number of blocks allocated for this object. */ |
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}; |
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/* These bitmasks and numbers are the same as in newlib */ |
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#define S_IFMT 0170000 /* type of file */ |
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#define S_IFDIR 0040000 /* directory */ |
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#define S_IFCHR 0020000 /* character special */ |
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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_IFIFO 0010000 /* fifo */ |
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/* These numbers are well-known and can be found in the manual page for sys_stat.h */ |
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#define S_IRWXU 0700 /**< Read, write, execute/search by owner. */ |
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#define S_IRUSR 0400 /**< Read permission, owner. */ |
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#define S_IWUSR 0200 /**< Write permission, owner. */ |
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#define S_IXUSR 0100 /**< Execute/search permission, owner. */ |
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#define S_IRWXG 070 /**< Read, write, execute/search by group. */ |
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#define S_IRGRP 040 /**< Read permission, group. */ |
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#define S_IWGRP 020 /**< Write permission, group. */ |
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#define S_IXGRP 010 /**< Execute/search permission, group. */ |
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#define S_IRWXO 07 /**< Read, write, execute/search by others. */ |
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#define S_IROTH 04 /**< Read permission, others. */ |
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#define S_IWOTH 02 /**< Write permission, others. */ |
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#define S_IXOTH 01 /**< Execute/search permission, others. */ |
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#define S_ISUID 04000 /**< Set-user-ID on execution. */ |
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#define S_ISGID 02000 /**< Set-group-ID on execution. */ |
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#define S_ISVTX 01000 /**< On directories, restricted deletion flag */ |
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/* File type test macros, taken from newlib */ |
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#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) |
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#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) |
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
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#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) |
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) |
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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 function prototypes are required by the standard */ |
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int chmod(const char *, mode_t); |
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int fchmod(int, mode_t); |
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int fchmodat(int, const char *, mode_t, int); |
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int fstat(int, struct stat *); |
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int fstatat(int, const char *restrict, struct stat *restrict, int); |
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int futimens(int, const struct timespec [2]); |
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int lstat(const char *restrict, struct stat *restrict); |
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int mkdir(const char *, mode_t); |
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int mkdirat(int, const char *, mode_t); |
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int mkfifo(const char *, mode_t); |
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int mkfifoat(int, const char *, mode_t); |
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int mknod(const char *, mode_t, dev_t); |
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int mknodat(int, const char *, mode_t, dev_t); |
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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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int utimensat(int, const char *, const struct timespec [2], int); |
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/* Special tv_nsec values for futimens(2) and utimensat(2). */ |
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#define UTIME_NOW (-2L) |
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#define UTIME_OMIT (-1L) |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* SYS_STAT_H_ */ |
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/** @} */ |
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