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129 lines
5.1 KiB
C
129 lines
5.1 KiB
C
/*
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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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/* If building on native we need to use the system libraries instead */
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#ifdef CPU_NATIVE
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#pragma GCC system_header
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/* without the GCC pragma above #include_next will trigger a pedantic error */
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#include_next <sys/stat.h>
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#else
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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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#endif /* CPU_NATIVE */
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/** @} */
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