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glibc  2.9
stat.h
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00001 /* Copyright (C) 1992, 1995-2001, 2002 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #ifndef _SYS_STAT_H
00020 # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
00021 #endif
00022 
00023 /* Versions of the `struct stat' data structure.  */
00024 #define _STAT_VER_LINUX_OLD 1
00025 #define _STAT_VER_KERNEL    1
00026 #define _STAT_VER_SVR4             2
00027 #define _STAT_VER_LINUX            3
00028 #define _STAT_VER           _STAT_VER_LINUX      /* The one defined below.  */
00029 
00030 /* Versions of the `xmknod' interface.  */
00031 #define _MKNOD_VER_LINUX    1
00032 #define _MKNOD_VER_SVR4            2
00033 #define _MKNOD_VER          _MKNOD_VER_LINUX /* The bits defined below.  */
00034 
00035 
00036 struct stat
00037   {
00038     __dev_t st_dev;                /* Device.  */
00039     unsigned short int __pad1;
00040 #ifndef __USE_FILE_OFFSET64
00041     __ino_t st_ino;                /* File serial number.      */
00042 #else
00043     __ino_t __st_ino;                     /* 32bit file serial number.       */
00044 #endif
00045     __mode_t st_mode;                     /* File mode.  */
00046     __nlink_t st_nlink;                   /* Link count.  */
00047     __uid_t st_uid;                /* User ID of the file's owner.    */
00048     __gid_t st_gid;                /* Group ID of the file's group.*/
00049     __dev_t st_rdev;               /* Device number, if device.  */
00050     unsigned short int __pad2;
00051 #ifndef __USE_FILE_OFFSET64
00052     __off_t st_size;               /* Size of file, in bytes.  */
00053 #else
00054     __off64_t st_size;                    /* Size of file, in bytes.  */
00055 #endif
00056     __blksize_t st_blksize;        /* Optimal block size for I/O.  */
00057 
00058 #ifndef __USE_FILE_OFFSET64
00059     __blkcnt_t st_blocks;          /* Number 512-byte blocks allocated. */
00060 #else
00061     __blkcnt64_t st_blocks;        /* Number 512-byte blocks allocated. */
00062 #endif
00063 #ifdef __USE_MISC
00064     /* Nanosecond resolution timestamps are stored in a format
00065        equivalent to 'struct timespec'.  This is the type used
00066        whenever possible but the Unix namespace rules do not allow the
00067        identifier 'timespec' to appear in the <sys/stat.h> header.
00068        Therefore we have to handle the use of this header in strictly
00069        standard-compliant sources special.  */
00070     struct timespec st_atim;              /* Time of last access.  */
00071     struct timespec st_mtim;              /* Time of last modification.  */
00072     struct timespec st_ctim;              /* Time of last status change.  */
00073 # define st_atime st_atim.tv_sec   /* Backward compatibility.  */
00074 # define st_mtime st_mtim.tv_sec
00075 # define st_ctime st_ctim.tv_sec
00076 #else
00077     __time_t st_atime;                    /* Time of last access.  */
00078     unsigned long int st_atimensec;       /* Nscecs of last access.  */
00079     __time_t st_mtime;                    /* Time of last modification.  */
00080     unsigned long int st_mtimensec;       /* Nsecs of last modification.  */
00081     __time_t st_ctime;                    /* Time of last status change.  */
00082     unsigned long int st_ctimensec;       /* Nsecs of last status change.  */
00083 #endif
00084 #ifndef __USE_FILE_OFFSET64
00085     unsigned long int __unused4;
00086     unsigned long int __unused5;
00087 #else
00088     __ino64_t st_ino;                     /* File serial number.      */
00089 #endif
00090   };
00091 
00092 #ifdef __USE_LARGEFILE64
00093 struct stat64
00094   {
00095     __dev_t st_dev;                /* Device.  */
00096     unsigned int __pad1;
00097 
00098     __ino_t __st_ino;                     /* 32bit file serial number.       */
00099     __mode_t st_mode;                     /* File mode.  */
00100     __nlink_t st_nlink;                   /* Link count.  */
00101     __uid_t st_uid;                /* User ID of the file's owner.    */
00102     __gid_t st_gid;                /* Group ID of the file's group.*/
00103     __dev_t st_rdev;               /* Device number, if device.  */
00104     unsigned int __pad2;
00105     __off64_t st_size;                    /* Size of file, in bytes.  */
00106     __blksize_t st_blksize;        /* Optimal block size for I/O.  */
00107 
00108     __blkcnt64_t st_blocks;        /* Number 512-byte blocks allocated. */
00109 #ifdef __USE_MISC
00110     /* Nanosecond resolution timestamps are stored in a format
00111        equivalent to 'struct timespec'.  This is the type used
00112        whenever possible but the Unix namespace rules do not allow the
00113        identifier 'timespec' to appear in the <sys/stat.h> header.
00114        Therefore we have to handle the use of this header in strictly
00115        standard-compliant sources special.  */
00116     struct timespec st_atim;              /* Time of last access.  */
00117     struct timespec st_mtim;              /* Time of last modification.  */
00118     struct timespec st_ctim;              /* Time of last status change.  */
00119 #else
00120     __time_t st_atime;                    /* Time of last access.  */
00121     unsigned long int st_atimensec;       /* Nscecs of last access.  */
00122     __time_t st_mtime;                    /* Time of last modification.  */
00123     unsigned long int st_mtimensec;       /* Nsecs of last modification.  */
00124     __time_t st_ctime;                    /* Time of last status change.  */
00125     unsigned long int st_ctimensec;       /* Nsecs of last status change.  */
00126 #endif
00127     __ino64_t st_ino;                     /* File serial number.             */
00128   };
00129 #endif
00130 
00131 /* Tell code we have these members.  */
00132 #define       _STATBUF_ST_BLKSIZE
00133 #define _STATBUF_ST_RDEV
00134 /* Nanosecond resolution time values are supported.  */
00135 #define _STATBUF_ST_NSEC
00136 
00137 /* Encoding of the file mode.  */
00138 
00139 #define       __S_IFMT      0170000       /* These bits determine file type.  */
00140 
00141 /* File types.  */
00142 #define       __S_IFDIR     0040000       /* Directory.  */
00143 #define       __S_IFCHR     0020000       /* Character device.  */
00144 #define       __S_IFBLK     0060000       /* Block device.  */
00145 #define       __S_IFREG     0100000       /* Regular file.  */
00146 #define       __S_IFIFO     0010000       /* FIFO.  */
00147 #define       __S_IFLNK     0120000       /* Symbolic link.  */
00148 #define       __S_IFSOCK    0140000       /* Socket.  */
00149 
00150 /* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
00151    they do it by enforcing the correct use of the macros.  */
00152 #define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
00153 #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
00154 #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
00155 
00156 /* Protection bits.  */
00157 
00158 #define       __S_ISUID     04000  /* Set user ID on execution.  */
00159 #define       __S_ISGID     02000  /* Set group ID on execution.  */
00160 #define       __S_ISVTX     01000  /* Save swapped text after use (sticky).  */
00161 #define       __S_IREAD     0400   /* Read by owner.  */
00162 #define       __S_IWRITE    0200   /* Write by owner.  */
00163 #define       __S_IEXEC     0100   /* Execute by owner.  */
00164 
00165 #if defined __USE_ATFILE || defined __USE_GNU
00166 /* XXX This will change to the macro for the next 2008 POSIX revision.  */
00167 # define UTIME_NOW   ((1l << 30) - 1l)
00168 # define UTIME_OMIT  ((1l << 30) - 2l)
00169 #endif