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

   1 /* Copyright (C) 1996,1997,1998,1999,2000,2001,2004
   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 #ifndef _SYS_STAT_H
  21 # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  22 #endif
  23
  24 /* Versions of the `struct stat' data structure.  */
  25 #define _STAT_VER_KERNEL        0
  26 #define _STAT_VER_GLIBC2        1
  27 #define _STAT_VER_GLIBC2_1      2
  28 #define _STAT_VER_KERNEL64      3
  29 #define _STAT_VER_GLIBC2_3_4    3
  30 #define _STAT_VER               _STAT_VER_GLIBC2_3_4
  31
  32 /* Versions of the `xmknod' interface.  */
  33 #define _MKNOD_VER_LINUX        0
  34
  35
  36 /* Nanosecond resolution timestamps are stored in a format equivalent to
  37    'struct timespec'.  This is the type used whenever possible but the
  38    Unix namespace rules do not allow the identifier 'timespec' to appear
  39    in the <sys/stat.h> header.  Therefore we have to handle the use of
  40    this header in strictly standard-compliant sources special.
  41
  42    Use neat tidy anonymous unions and structures when possible.  */
  43
  44 #ifdef __USE_MISC
  45 # if __GNUC_PREREQ(3,3)
  46 #  define __ST_TIME(X)                          \
  47         __extension__ union {                   \
  48             struct timespec st_##X##tim;        \
  49             struct {                            \
  50                 __time_t st_##X##time;          \
  51                 unsigned long st_##X##timensec; \
  52             };                                  \
  53         }
  54 # else
  55 #  define __ST_TIME(X) struct timespec st_##X##tim
  56 #  define st_atime st_atim.tv_sec
  57 #  define st_mtime st_mtim.tv_sec
  58 #  define st_ctime st_ctim.tv_sec
  59 # endif
  60 #else
  61 # define __ST_TIME(X)                           \
  62         __time_t st_##X##time;                  \
  63         unsigned long st_##X##timensec
  64 #endif
  65
  66
  67 struct stat
  68   {
  69     __dev_t st_dev;             /* Device.  */
  70 #ifdef __USE_FILE_OFFSET64
  71     __ino64_t st_ino;           /* File serial number.  */
  72 #else
  73     __ino_t st_ino;             /* File serial number.  */
  74     int __pad0;                 /* 64-bit st_ino.  */
  75 #endif
  76     __dev_t st_rdev;            /* Device number, if device.  */
  77     __off_t st_size;            /* Size of file, in bytes.  */
  78 #ifdef __USE_FILE_OFFSET64
  79     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
  80 #else
  81     __blkcnt_t st_blocks;       /* Nr. 512-byte blocks allocated.  */
  82     int __pad1;                 /* 64-bit st_blocks.  */
  83 #endif
  84     __mode_t st_mode;           /* File mode.  */
  85     __uid_t st_uid;             /* User ID of the file's owner. */
  86     __gid_t st_gid;             /* Group ID of the file's group.*/
  87     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
  88     __nlink_t st_nlink;         /* Link count.  */
  89     int __pad2;                 /* Real padding.  */
  90     __ST_TIME(a);               /* Time of last access.  */
  91     __ST_TIME(m);               /* Time of last modification.  */
  92     __ST_TIME(c);               /* Time of last status change.  */
  93     long __unused[3];
  94   };
  95
  96 #ifdef __USE_LARGEFILE64
  97 /* Note stat64 is the same shape as stat.  */
  98 struct stat64
  99   {
 100     __dev_t st_dev;             /* Device.  */
 101     __ino64_t st_ino;           /* File serial number.  */
 102     __dev_t st_rdev;            /* Device number, if device.  */
 103     __off_t st_size;            /* Size of file, in bytes.  */
 104     __blkcnt64_t st_blocks;     /* Nr. 512-byte blocks allocated.  */
 105     __mode_t st_mode;           /* File mode.  */
 106     __uid_t st_uid;             /* User ID of the file's owner. */
 107     __gid_t st_gid;             /* Group ID of the file's group.*/
 108     __blksize_t st_blksize;     /* Optimal block size for I/O.  */
 109     __nlink_t st_nlink;         /* Link count.  */
 110     int __pad0;                 /* Real padding.  */
 111     __ST_TIME(a);               /* Time of last access.  */
 112     __ST_TIME(m);               /* Time of last modification.  */
 113     __ST_TIME(c);               /* Time of last status change.  */
 114     long __unused[3];
 115   };
 116 #endif
 117
 118 #undef __ST_TIME
 119
 120 /* Tell code we have these members.  */
 121 #define _STATBUF_ST_BLKSIZE
 122 #define _STATBUF_ST_RDEV
 123 #define _STATBUF_ST_NSEC
 124
 125 /* Encoding of the file mode.  */
 126
 127 #define __S_IFMT        0170000 /* These bits determine file type.  */
 128
 129 /* File types.  */
 130 #define __S_IFDIR       0040000 /* Directory.  */
 131 #define __S_IFCHR       0020000 /* Character device.  */
 132 #define __S_IFBLK       0060000 /* Block device.  */
 133 #define __S_IFREG       0100000 /* Regular file.  */
 134 #define __S_IFIFO       0010000 /* FIFO.  */
 135 #define __S_IFLNK       0120000 /* Symbolic link.  */
 136 #define __S_IFSOCK      0140000 /* Socket.  */
 137
 138 /* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
 139    they do it by enforcing the correct use of the macros.  */
 140 #define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
 141 #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
 142 #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
 143
 144 /* Protection bits.  */
 145
 146 #define __S_ISUID       04000   /* Set user ID on execution.  */
 147 #define __S_ISGID       02000   /* Set group ID on execution.  */
 148 #define __S_ISVTX       01000   /* Save swapped text after use (sticky).  */
 149 #define __S_IREAD       0400    /* Read by owner.  */
 150 #define __S_IWRITE      0200    /* Write by owner.  */
 151 #define __S_IEXEC       0100    /* Execute by owner.  */
 152
 153 #if defined __USE_ATFILE || defined __USE_GNU
 154 /* XXX This will change to the macro for the next 2008 POSIX revision.  */
 155 # define UTIME_NOW      ((1l << 30) - 1l)
 156 # define UTIME_OMIT     ((1l << 30) - 2l)
 157 #endif