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

   1 /* Copyright (C) 1996,1997,1998,1999,2000,2001,2004,2010
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #if !defined _SYS_STAT_H && !defined _FCNTL_H
  21 # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  22 #endif
  23
  24 #ifndef _BITS_STAT_H
  25 #define _BITS_STAT_H    1
  26
  27 /* Versions of the `struct stat' data structure.  */
  28 #define _STAT_VER_KERNEL        0
  29 #define _STAT_VER_GLIBC2        1
  30 #define _STAT_VER_GLIBC2_1      2
  31 #define _STAT_VER_KERNEL64      3
  32 #define _STAT_VER_GLIBC2_3_4    3
  33 #define _STAT_VER               _STAT_VER_GLIBC2_3_4
  34
  35 /* Versions of the `xmknod' interface.  */
  36 #define _MKNOD_VER_LINUX        0
  37
  38
  39 /* Nanosecond resolution timestamps are stored in a format equivalent to
  40    'struct timespec'.  This is the type used whenever possible but the
  41    Unix namespace rules do not allow the identifier 'timespec' to appear
  42    in the <sys/stat.h> header.  Therefore we have to handle the use of
  43    this header in strictly standard-compliant sources special.
  44
  45    Use neat tidy anonymous unions and structures when possible.  */
  46
  47 #if defined __USE_MISC || defined __USE_XOPEN2K8
  48 # if __GNUC_PREREQ(3,3)
  49 #  define __ST_TIME(X)                          \
  50         __extension__ union {                   \
  51             struct timespec st_##X##tim;        \
  52             struct {                            \
  53                 __time_t st_##X##time;          \
  54                 unsigned long st_##X##timensec; \
  55             };                                  \
  56         }
  57 # else
  58 #  define __ST_TIME(X) struct timespec st_##X##tim
  59 #  define st_atime st_atim.tv_sec
  60 #  define st_mtime st_mtim.tv_sec
  61 #  define st_ctime st_ctim.tv_sec
  62 # endif
  63 #else
  64 # define __ST_TIME(X)                           \
  65         __time_t st_##X##time;                  \
  66         unsigned long st_##X##timensec
  67 #endif
  68
  69
  70 struct stat
  71   {
  72     __dev_t st_dev;             /* Device.  */
  73 #ifdef __USE_FILE_OFFSET64
  74     __ino64_t st_ino;           /* File serial number.  */
  75 #else
  76     __ino_t st_ino;             /* File serial number.  */
  77     int __pad0;                 /* 64-bit st_ino.  */
  78 #endif
  79     __dev_t st_rdev;            /* Device number, if device.  */
  80     __off_t st_size;            /* Size of file, in bytes.  */
  81 #ifdef __USE_FILE_OFFSET64
  82     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
  83 #else
  84     __blkcnt_t st_blocks;       /* Nr. 512-byte blocks allocated.  */
  85     int __pad1;                 /* 64-bit st_blocks.  */
  86 #endif
  87     __mode_t st_mode;           /* File mode.  */
  88     __uid_t st_uid;             /* User ID of the file's owner. */
  89     __gid_t st_gid;             /* Group ID of the file's group.*/
  90     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
  91     __nlink_t st_nlink;         /* Link count.  */
  92     int __pad2;                 /* Real padding.  */
  93     __ST_TIME(a);               /* Time of last access.  */
  94     __ST_TIME(m);               /* Time of last modification.  */
  95     __ST_TIME(c);               /* Time of last status change.  */
  96     long __unused[3];
  97   };
  98
  99 #ifdef __USE_LARGEFILE64
 100 /* Note stat64 is the same shape as stat.  */
 101 struct stat64
 102   {
 103     __dev_t st_dev;             /* Device.  */
 104     __ino64_t st_ino;           /* File serial number.  */
 105     __dev_t st_rdev;            /* Device number, if device.  */
 106     __off_t st_size;            /* Size of file, in bytes.  */
 107     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
 108     __mode_t st_mode;           /* File mode.  */
 109     __uid_t st_uid;             /* User ID of the file's owner. */
 110     __gid_t st_gid;             /* Group ID of the file's group.*/
 111     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
 112     __nlink_t st_nlink;         /* Link count.  */
 113     int __pad0;                 /* Real padding.  */
 114     __ST_TIME(a);               /* Time of last access.  */
 115     __ST_TIME(m);               /* Time of last modification.  */
 116     __ST_TIME(c);               /* Time of last status change.  */
 117     long __unused[3];
 118   };
 119 #endif
 120
 121 #undef __ST_TIME
 122
 123 /* Tell code we have these members.  */
 124 #define _STATBUF_ST_BLKSIZE
 125 #define _STATBUF_ST_RDEV
 126 #define _STATBUF_ST_NSEC
 127
 128 /* Encoding of the file mode.  */
 129
 130 #define __S_IFMT        0170000 /* These bits determine file type.  */
 131
 132 /* File types.  */
 133 #define __S_IFDIR       0040000 /* Directory.  */
 134 #define __S_IFCHR       0020000 /* Character device.  */
 135 #define __S_IFBLK       0060000 /* Block device.  */
 136 #define __S_IFREG       0100000 /* Regular file.  */
 137 #define __S_IFIFO       0010000 /* FIFO.  */
 138 #define __S_IFLNK       0120000 /* Symbolic link.  */
 139 #define __S_IFSOCK      0140000 /* Socket.  */
 140
 141 /* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
 142    they do it by enforcing the correct use of the macros.  */
 143 #define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
 144 #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
 145 #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
 146
 147 /* Protection bits.  */
 148
 149 #define __S_ISUID       04000   /* Set user ID on execution.  */
 150 #define __S_ISGID       02000   /* Set group ID on execution.  */
 151 #define __S_ISVTX       01000   /* Save swapped text after use (sticky).  */
 152 #define __S_IREAD       0400    /* Read by owner.  */
 153 #define __S_IWRITE      0200    /* Write by owner.  */
 154 #define __S_IEXEC       0100    /* Execute by owner.  */
 155
 156 #if defined __USE_ATFILE || defined __USE_GNU
 157 /* XXX This will change to the macro for the next 2008 POSIX revision.  */
 158 # define UTIME_NOW      ((1l << 30) - 1l)
 159 # define UTIME_OMIT     ((1l << 30) - 2l)
 160 #endif
 161
 162 #endif /* bits/stat.h */