The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/stat.h

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  * (c) UNIX System Laboratories, Inc.
    5  * All or some portions of this file are derived from material licensed
    6  * to the University of California by American Telephone and Telegraph
    7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
    8  * the permission of UNIX System Laboratories, Inc.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by the University of
   21  *      California, Berkeley and its contributors.
   22  * 4. Neither the name of the University nor the names of its contributors
   23  *    may be used to endorse or promote products derived from this software
   24  *    without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   36  * SUCH DAMAGE.
   37  *
   38  *      @(#)stat.h      8.12 (Berkeley) 6/16/95
   39  * $FreeBSD: releng/5.0/sys/sys/stat.h 104911 2002-10-11 15:52:14Z mike $
   40  */
   41 
   42 #ifndef _SYS_STAT_H_
   43 #define _SYS_STAT_H_
   44 
   45 #include <sys/cdefs.h>
   46 #include <sys/_types.h>
   47 
   48 #ifndef _FFLAGS_T_DECLARED
   49 typedef __fflags_t      fflags_t;       /* file flags */
   50 #define _FFLAGS_T_DECLARED
   51 #endif
   52 
   53 #if !defined(_KERNEL) && !defined(_POSIX_SOURCE)
   54 /*
   55  * XXX we need this for struct timespec.  We get miscellaneous namespace
   56  * pollution with it.
   57  */
   58 #include <sys/time.h>
   59 #endif
   60 
   61 #ifdef _POSIX_SOURCE
   62 #include <sys/_timespec.h>
   63 #endif
   64 
   65 #ifdef _KERNEL
   66 #define __dev_t udev_t
   67 #else
   68 #define __dev_t dev_t
   69 #endif
   70 
   71 #ifndef _POSIX_SOURCE
   72 struct ostat {
   73         u_int16_t st_dev;               /* inode's device */
   74         ino_t     st_ino;               /* inode's number */
   75         mode_t    st_mode;              /* inode protection mode */
   76         nlink_t   st_nlink;             /* number of hard links */
   77         u_int16_t st_uid;               /* user ID of the file's owner */
   78         u_int16_t st_gid;               /* group ID of the file's group */
   79         u_int16_t st_rdev;              /* device type */
   80         int32_t   st_size;              /* file size, in bytes */
   81         struct  timespec st_atimespec;  /* time of last access */
   82         struct  timespec st_mtimespec;  /* time of last data modification */
   83         struct  timespec st_ctimespec;  /* time of last file status change */
   84         int32_t   st_blksize;           /* optimal blocksize for I/O */
   85         int32_t   st_blocks;            /* blocks allocated for file */
   86         fflags_t  st_flags;             /* user defined flags for file */
   87         u_int32_t st_gen;               /* file generation number */
   88 };
   89 #endif /* !_POSIX_SOURCE */
   90 
   91 struct stat {
   92         __dev_t   st_dev;               /* inode's device */
   93         ino_t     st_ino;               /* inode's number */
   94         mode_t    st_mode;              /* inode protection mode */
   95         nlink_t   st_nlink;             /* number of hard links */
   96         uid_t     st_uid;               /* user ID of the file's owner */
   97         gid_t     st_gid;               /* group ID of the file's group */
   98         __dev_t   st_rdev;              /* device type */
   99 #ifndef _POSIX_SOURCE
  100         struct  timespec st_atimespec;  /* time of last access */
  101         struct  timespec st_mtimespec;  /* time of last data modification */
  102         struct  timespec st_ctimespec;  /* time of last file status change */
  103 #else
  104         time_t    st_atime;             /* time of last access */
  105         long      st_atimensec;         /* nsec of last access */
  106         time_t    st_mtime;             /* time of last data modification */
  107         long      st_mtimensec;         /* nsec of last data modification */
  108         time_t    st_ctime;             /* time of last file status change */
  109         long      st_ctimensec;         /* nsec of last file status change */
  110 #endif
  111         off_t     st_size;              /* file size, in bytes */
  112         int64_t   st_blocks;            /* blocks allocated for file */
  113         u_int32_t st_blksize;           /* optimal blocksize for I/O */
  114         fflags_t  st_flags;             /* user defined flags for file */
  115         u_int32_t st_gen;               /* file generation number */
  116         int32_t   st_lspare;
  117 #ifndef _POSIX_SOURCE
  118         struct timespec st_birthtimespec; /* time of file creation */
  119         /*
  120          * Explicitly pad st_birthtimespec to 16 bytes so that the size of
  121          * struct stat is backwards compatible.  We use bitfields instead
  122          * of an array of chars so that this doesn't require a C99 compiler
  123          * to compile if the size of the padding is 0.  We use 2 bitfields
  124          * to cover up to 64 bits on 32-bit machines.  We assume that
  125          * CHAR_BIT is 8...
  126          */
  127         int     :(8 / 2) * (16 - (int)sizeof(struct timespec));
  128         int     :(8 / 2) * (16 - (int)sizeof(struct timespec));
  129 #else
  130         time_t    st_birthtime;         /* time of file creation */
  131         long      st_birthtimensec;     /* nsec of file creation */
  132         int     :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  133         int     :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  134 #endif
  135 };
  136 
  137 #ifndef _POSIX_SOURCE
  138 struct nstat {
  139         __dev_t   st_dev;               /* inode's device */
  140         ino_t     st_ino;               /* inode's number */
  141         u_int32_t st_mode;              /* inode protection mode */
  142         u_int32_t st_nlink;             /* number of hard links */
  143         uid_t     st_uid;               /* user ID of the file's owner */
  144         gid_t     st_gid;               /* group ID of the file's group */
  145         __dev_t   st_rdev;              /* device type */
  146         struct  timespec st_atimespec;  /* time of last access */
  147         struct  timespec st_mtimespec;  /* time of last data modification */
  148         struct  timespec st_ctimespec;  /* time of last file status change */
  149         off_t     st_size;              /* file size, in bytes */
  150         int64_t   st_blocks;            /* blocks allocated for file */
  151         u_int32_t st_blksize;           /* optimal blocksize for I/O */
  152         fflags_t  st_flags;             /* user defined flags for file */
  153         u_int32_t st_gen;               /* file generation number */
  154         struct timespec st_birthtimespec; /* time of file creation */
  155         /*
  156          * See above about the following padding.
  157          */
  158         int     :(8 / 2) * (16 - (int)sizeof(struct timespec));
  159         int     :(8 / 2) * (16 - (int)sizeof(struct timespec));
  160 };
  161 #endif
  162 
  163 #undef __dev_t
  164 
  165 #ifndef _POSIX_SOURCE
  166 #define st_atime st_atimespec.tv_sec
  167 #define st_mtime st_mtimespec.tv_sec
  168 #define st_ctime st_ctimespec.tv_sec
  169 #define st_birthtime st_birthtimespec.tv_sec
  170 #endif
  171 
  172 #define S_ISUID 0004000                 /* set user id on execution */
  173 #define S_ISGID 0002000                 /* set group id on execution */
  174 #ifndef _POSIX_SOURCE
  175 #define S_ISTXT 0001000                 /* sticky bit */
  176 #endif
  177 
  178 #define S_IRWXU 0000700                 /* RWX mask for owner */
  179 #define S_IRUSR 0000400                 /* R for owner */
  180 #define S_IWUSR 0000200                 /* W for owner */
  181 #define S_IXUSR 0000100                 /* X for owner */
  182 
  183 #ifndef _POSIX_SOURCE
  184 #define S_IREAD         S_IRUSR
  185 #define S_IWRITE        S_IWUSR
  186 #define S_IEXEC         S_IXUSR
  187 #endif
  188 
  189 #define S_IRWXG 0000070                 /* RWX mask for group */
  190 #define S_IRGRP 0000040                 /* R for group */
  191 #define S_IWGRP 0000020                 /* W for group */
  192 #define S_IXGRP 0000010                 /* X for group */
  193 
  194 #define S_IRWXO 0000007                 /* RWX mask for other */
  195 #define S_IROTH 0000004                 /* R for other */
  196 #define S_IWOTH 0000002                 /* W for other */
  197 #define S_IXOTH 0000001                 /* X for other */
  198 
  199 #ifndef _POSIX_SOURCE
  200 #define S_IFMT   0170000                /* type of file mask */
  201 #define S_IFIFO  0010000                /* named pipe (fifo) */
  202 #define S_IFCHR  0020000                /* character special */
  203 #define S_IFDIR  0040000                /* directory */
  204 #define S_IFBLK  0060000                /* block special */
  205 #define S_IFREG  0100000                /* regular */
  206 #define S_IFLNK  0120000                /* symbolic link */
  207 #define S_IFSOCK 0140000                /* socket */
  208 #define S_IFWHT  0160000                /* whiteout */
  209 #define S_ISVTX  0001000                /* save swapped text even after use */
  210 #endif
  211 
  212 #define S_ISDIR(m)      (((m) & 0170000) == 0040000)    /* directory */
  213 #define S_ISCHR(m)      (((m) & 0170000) == 0020000)    /* char special */
  214 #define S_ISBLK(m)      (((m) & 0170000) == 0060000)    /* block special */
  215 #define S_ISREG(m)      (((m) & 0170000) == 0100000)    /* regular file */
  216 #define S_ISFIFO(m)     (((m) & 0170000) == 0010000)    /* fifo or socket */
  217 #ifndef _POSIX_SOURCE
  218 #define S_ISLNK(m)      (((m) & 0170000) == 0120000)    /* symbolic link */
  219 #define S_ISSOCK(m)     (((m) & 0170000) == 0140000)    /* socket */
  220 #define S_ISWHT(m)      (((m) & 0170000) == 0160000)    /* whiteout */
  221 #endif
  222 
  223 #ifndef _POSIX_SOURCE
  224 #define ACCESSPERMS     (S_IRWXU|S_IRWXG|S_IRWXO)       /* 0777 */
  225                                                         /* 7777 */
  226 #define ALLPERMS        (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
  227                                                         /* 0666 */
  228 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
  229 
  230 #define S_BLKSIZE       512             /* block size used in the stat struct */
  231 
  232 /*
  233  * Definitions of flags stored in file flags word.
  234  *
  235  * Super-user and owner changeable flags.
  236  */
  237 #define UF_SETTABLE     0x0000ffff      /* mask of owner changeable flags */
  238 #define UF_NODUMP       0x00000001      /* do not dump file */
  239 #define UF_IMMUTABLE    0x00000002      /* file may not be changed */
  240 #define UF_APPEND       0x00000004      /* writes to file may only append */
  241 #define UF_OPAQUE       0x00000008      /* directory is opaque wrt. union */
  242 #define UF_NOUNLINK     0x00000010      /* file may not be removed or renamed */
  243 /*
  244  * Super-user changeable flags.
  245  */
  246 #define SF_SETTABLE     0xffff0000      /* mask of superuser changeable flags */
  247 #define SF_ARCHIVED     0x00010000      /* file is archived */
  248 #define SF_IMMUTABLE    0x00020000      /* file may not be changed */
  249 #define SF_APPEND       0x00040000      /* writes to file may only append */
  250 #define SF_NOUNLINK     0x00100000      /* file may not be removed or renamed */
  251 #define SF_SNAPSHOT     0x00200000      /* snapshot inode */
  252 
  253 #ifdef _KERNEL
  254 /*
  255  * Shorthand abbreviations of above.
  256  */
  257 #define OPAQUE          (UF_OPAQUE)
  258 #define APPEND          (UF_APPEND | SF_APPEND)
  259 #define IMMUTABLE       (UF_IMMUTABLE | SF_IMMUTABLE)
  260 #define NOUNLINK        (UF_NOUNLINK | SF_NOUNLINK)
  261 #endif
  262 
  263 #endif /* !_POSIX_SOURCE */
  264 
  265 #ifndef _KERNEL
  266 __BEGIN_DECLS
  267 int     chmod(const char *, mode_t);
  268 int     fstat(int, struct stat *);
  269 int     mkdir(const char *, mode_t);
  270 int     mkfifo(const char *, mode_t);
  271 int     stat(const char *, struct stat *);
  272 mode_t  umask(mode_t);
  273 
  274 #ifndef _POSIX_SOURCE
  275 int     chflags(const char *, unsigned long);
  276 int     lchflags(const char *, int);
  277 int     fchflags(int, unsigned long);
  278 int     fchmod(int, mode_t);
  279 int     lchmod(const char *, mode_t);
  280 int     lstat(const char *, struct stat *);
  281 #endif
  282 __END_DECLS
  283 
  284 #endif /* !_KERNEL */
  285 
  286 #endif /* !_SYS_STAT_H_ */

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