sysdeps/unix/sysv/linux/alpha/bits/stat.h

   1 /* Copyright (C) 1996-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #if !defined _SYS_STAT_H && !defined _FCNTL_H
  19 # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  20 #endif
  21
  22 #ifndef _BITS_STAT_H
  23 #define _BITS_STAT_H    1
  24
  25 /* Versions of the `struct stat' data structure.  */
  26 #define _STAT_VER_KERNEL        0
  27 #define _STAT_VER_GLIBC2        1
  28 #define _STAT_VER_GLIBC2_1      2
  29 #define _STAT_VER_KERNEL64      3
  30 #define _STAT_VER_GLIBC2_3_4    3
  31 #define _STAT_VER_LINUX         3
  32 #define _STAT_VER               _STAT_VER_LINUX
  33
  34 /* Versions of the `xmknod' interface.  */
  35 #define _MKNOD_VER_LINUX        0
  36
  37
  38 /* Nanosecond resolution timestamps are stored in a format equivalent to
  39    'struct timespec'.  This is the type used whenever possible but the
  40    Unix namespace rules do not allow the identifier 'timespec' to appear
  41    in the <sys/stat.h> header.  Therefore we have to handle the use of
  42    this header in strictly standard-compliant sources special.
  43
  44    Use neat tidy anonymous unions and structures when possible.  */
  45
  46 #ifdef __USE_XOPEN2K8
  47 # if __GNUC_PREREQ(3,3)
  48 #  define __ST_TIME(X)                          \
  49         __extension__ union {                   \
  50             struct timespec st_##X##tim;        \
  51             struct {                            \
  52                 __time_t st_##X##time;          \
  53                 unsigned long st_##X##timensec; \
  54             };                                  \
  55         }
  56 # else
  57 #  define __ST_TIME(X) struct timespec st_##X##tim
  58 #  define st_atime st_atim.tv_sec
  59 #  define st_mtime st_mtim.tv_sec
  60 #  define st_ctime st_ctim.tv_sec
  61 # endif
  62 #else
  63 # define __ST_TIME(X)                           \
  64         __time_t st_##X##time;                  \
  65         unsigned long st_##X##timensec
  66 #endif
  67
  68
  69 struct stat
  70   {
  71     __dev_t st_dev;             /* Device.  */
  72 #ifdef __USE_FILE_OFFSET64
  73     __ino64_t st_ino;           /* File serial number.  */
  74 #else
  75     __ino_t st_ino;             /* File serial number.  */
  76     int __pad0;                 /* 64-bit st_ino.  */
  77 #endif
  78     __dev_t st_rdev;            /* Device number, if device.  */
  79     __off_t st_size;            /* Size of file, in bytes.  */
  80 #ifdef __USE_FILE_OFFSET64
  81     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
  82 #else
  83     __blkcnt_t st_blocks;       /* Nr. 512-byte blocks allocated.  */
  84     int __pad1;                 /* 64-bit st_blocks.  */
  85 #endif
  86     __mode_t st_mode;           /* File mode.  */
  87     __uid_t st_uid;             /* User ID of the file's owner. */
  88     __gid_t st_gid;             /* Group ID of the file's group.*/
  89     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
  90     __nlink_t st_nlink;         /* Link count.  */
  91     int __pad2;                 /* Real padding.  */
  92     __ST_TIME(a);               /* Time of last access.  */
  93     __ST_TIME(m);               /* Time of last modification.  */
  94     __ST_TIME(c);               /* Time of last status change.  */
  95     long __glibc_reserved[3];
  96   };
  97
  98 #ifdef __USE_LARGEFILE64
  99 /* Note stat64 is the same shape as stat.  */
 100 struct stat64
 101   {
 102     __dev_t st_dev;             /* Device.  */
 103     __ino64_t st_ino;           /* File serial number.  */
 104     __dev_t st_rdev;            /* Device number, if device.  */
 105     __off_t st_size;            /* Size of file, in bytes.  */
 106     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
 107     __mode_t st_mode;           /* File mode.  */
 108     __uid_t st_uid;             /* User ID of the file's owner. */
 109     __gid_t st_gid;             /* Group ID of the file's group.*/
 110     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
 111     __nlink_t st_nlink;         /* Link count.  */
 112     int __pad0;                 /* Real padding.  */
 113     __ST_TIME(a);               /* Time of last access.  */
 114     __ST_TIME(m);               /* Time of last modification.  */
 115     __ST_TIME(c);               /* Time of last status change.  */
 116     long __glibc_reserved[3];
 117   };
 118 #endif
 119
 120 #undef __ST_TIME
 121
 122 /* Tell code we have these members.  */
 123 #define _STATBUF_ST_BLKSIZE
 124 #define _STATBUF_ST_RDEV
 125 #define _STATBUF_ST_NSEC
 126
 127 /* Encoding of the file mode.  */
 128
 129 #define __S_IFMT        0170000 /* These bits determine file type.  */
 130
 131 /* File types.  */
 132 #define __S_IFDIR       0040000 /* Directory.  */
 133 #define __S_IFCHR       0020000 /* Character device.  */
 134 #define __S_IFBLK       0060000 /* Block device.  */
 135 #define __S_IFREG       0100000 /* Regular file.  */
 136 #define __S_IFIFO       0010000 /* FIFO.  */
 137 #define __S_IFLNK       0120000 /* Symbolic link.  */
 138 #define __S_IFSOCK      0140000 /* Socket.  */
 139
 140 /* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
 141    they do it by enforcing the correct use of the macros.  */
 142 #define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
 143 #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
 144 #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
 145
 146 /* Protection bits.  */
 147
 148 #define __S_ISUID       04000   /* Set user ID on execution.  */
 149 #define __S_ISGID       02000   /* Set group ID on execution.  */
 150 #define __S_ISVTX       01000   /* Save swapped text after use (sticky).  */
 151 #define __S_IREAD       0400    /* Read by owner.  */
 152 #define __S_IWRITE      0200    /* Write by owner.  */
 153 #define __S_IEXEC       0100    /* Execute by owner.  */
 154
 155 #ifdef __USE_ATFILE
 156 # define UTIME_NOW      ((1l << 30) - 1l)
 157 # define UTIME_OMIT     ((1l << 30) - 2l)
 158 #endif
 159
 160 #endif /* bits/stat.h */