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  * 4. Neither the name of the University nor the names of its contributors
   19  *    may be used to endorse or promote products derived from this software
   20  *    without specific prior written permission.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  *      @(#)stat.h      8.12 (Berkeley) 6/16/95
   35  * $FreeBSD: src/sys/sys/stat.h,v 1.40 2004/06/17 17:16:52 phk Exp $
   36  */
   37 
   38 #ifndef _SYS_STAT_H_
   39 #define _SYS_STAT_H_
   40 
   41 #include <sys/cdefs.h>
   42 #include <sys/_types.h>
   43 
   44 /* XXX missing blkcnt_t, blksize_t. */
   45 
   46 #ifndef _DEV_T_DECLARED
   47 typedef __dev_t         dev_t;
   48 #define _DEV_T_DECLARED
   49 #endif
   50 
   51 #ifndef _FFLAGS_T_DECLARED
   52 typedef __fflags_t      fflags_t;
   53 #define _FFLAGS_T_DECLARED
   54 #endif
   55 
   56 #ifndef _GID_T_DECLARED
   57 typedef __gid_t         gid_t;
   58 #define _GID_T_DECLARED
   59 #endif
   60 
   61 #ifndef _INO_T_DECLARED
   62 typedef __ino_t         ino_t;
   63 #define _INO_T_DECLARED
   64 #endif
   65 
   66 #ifndef _MODE_T_DECLARED
   67 typedef __mode_t        mode_t;
   68 #define _MODE_T_DECLARED
   69 #endif
   70 
   71 #ifndef _NLINK_T_DECLARED
   72 typedef __nlink_t       nlink_t;
   73 #define _NLINK_T_DECLARED
   74 #endif
   75 
   76 #ifndef _OFF_T_DECLARED
   77 typedef __off_t         off_t;
   78 #define _OFF_T_DECLARED
   79 #endif
   80 
   81 #ifndef _TIME_T_DECLARED
   82 typedef __time_t        time_t;
   83 #define _TIME_T_DECLARED
   84 #endif
   85 
   86 #ifndef _UID_T_DECLARED
   87 typedef __uid_t         uid_t;
   88 #define _UID_T_DECLARED
   89 #endif
   90 
   91 #if !defined(_KERNEL) && __BSD_VISIBLE
   92 /*
   93  * XXX we need this for struct timespec.  We get miscellaneous namespace
   94  * pollution with it.
   95  */
   96 #include <sys/time.h>
   97 #endif
   98 
   99 #if !__BSD_VISIBLE
  100 #include <sys/_timespec.h>
  101 #endif
  102 
  103 #if __BSD_VISIBLE
  104 struct ostat {
  105         __uint16_t st_dev;              /* inode's device */
  106         ino_t     st_ino;               /* inode's number */
  107         mode_t    st_mode;              /* inode protection mode */
  108         nlink_t   st_nlink;             /* number of hard links */
  109         __uint16_t st_uid;              /* user ID of the file's owner */
  110         __uint16_t st_gid;              /* group ID of the file's group */
  111         __uint16_t st_rdev;             /* device type */
  112         __int32_t st_size;              /* file size, in bytes */
  113         struct  timespec st_atimespec;  /* time of last access */
  114         struct  timespec st_mtimespec;  /* time of last data modification */
  115         struct  timespec st_ctimespec;  /* time of last file status change */
  116         __int32_t st_blksize;           /* optimal blocksize for I/O */
  117         __int32_t st_blocks;            /* blocks allocated for file */
  118         fflags_t  st_flags;             /* user defined flags for file */
  119         __uint32_t st_gen;              /* file generation number */
  120 };
  121 #endif /* __BSD_VISIBLE */
  122 
  123 struct stat {
  124         __dev_t   st_dev;               /* inode's device */
  125         ino_t     st_ino;               /* inode's number */
  126         mode_t    st_mode;              /* inode protection mode */
  127         nlink_t   st_nlink;             /* number of hard links */
  128         uid_t     st_uid;               /* user ID of the file's owner */
  129         gid_t     st_gid;               /* group ID of the file's group */
  130         __dev_t   st_rdev;              /* device type */
  131 #if __BSD_VISIBLE
  132         struct  timespec st_atimespec;  /* time of last access */
  133         struct  timespec st_mtimespec;  /* time of last data modification */
  134         struct  timespec st_ctimespec;  /* time of last file status change */
  135 #else
  136         time_t    st_atime;             /* time of last access */
  137         long      st_atimensec;         /* nsec of last access */
  138         time_t    st_mtime;             /* time of last data modification */
  139         long      st_mtimensec;         /* nsec of last data modification */
  140         time_t    st_ctime;             /* time of last file status change */
  141         long      st_ctimensec;         /* nsec of last file status change */
  142 #endif
  143         off_t     st_size;              /* file size, in bytes */
  144         __int64_t st_blocks;            /* blocks allocated for file */
  145         __uint32_t st_blksize;          /* optimal blocksize for I/O */
  146         fflags_t  st_flags;             /* user defined flags for file */
  147         __uint32_t st_gen;              /* file generation number */
  148         __int32_t st_lspare;
  149 #if __BSD_VISIBLE
  150         struct timespec st_birthtimespec; /* time of file creation */
  151         /*
  152          * Explicitly pad st_birthtimespec to 16 bytes so that the size of
  153          * struct stat is backwards compatible.  We use bitfields instead
  154          * of an array of chars so that this doesn't require a C99 compiler
  155          * to compile if the size of the padding is 0.  We use 2 bitfields
  156          * to cover up to 64 bits on 32-bit machines.  We assume that
  157          * CHAR_BIT is 8...
  158          */
  159         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  160         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  161 #else
  162         time_t    st_birthtime;         /* time of file creation */
  163         long      st_birthtimensec;     /* nsec of file creation */
  164         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  165         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  166 #endif
  167 };
  168 
  169 #if __BSD_VISIBLE
  170 struct nstat {
  171         __dev_t   st_dev;               /* inode's device */
  172         ino_t     st_ino;               /* inode's number */
  173         __uint32_t st_mode;             /* inode protection mode */
  174         __uint32_t st_nlink;            /* number of hard links */
  175         uid_t     st_uid;               /* user ID of the file's owner */
  176         gid_t     st_gid;               /* group ID of the file's group */
  177         __dev_t   st_rdev;              /* device type */
  178         struct  timespec st_atimespec;  /* time of last access */
  179         struct  timespec st_mtimespec;  /* time of last data modification */
  180         struct  timespec st_ctimespec;  /* time of last file status change */
  181         off_t     st_size;              /* file size, in bytes */
  182         __int64_t st_blocks;            /* blocks allocated for file */
  183         __uint32_t st_blksize;          /* optimal blocksize for I/O */
  184         fflags_t  st_flags;             /* user defined flags for file */
  185         __uint32_t st_gen;              /* file generation number */
  186         struct timespec st_birthtimespec; /* time of file creation */
  187         /*
  188          * See above about the following padding.
  189          */
  190         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  191         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  192 };
  193 #endif
  194 
  195 #if __BSD_VISIBLE
  196 #define st_atime st_atimespec.tv_sec
  197 #define st_mtime st_mtimespec.tv_sec
  198 #define st_ctime st_ctimespec.tv_sec
  199 #define st_birthtime st_birthtimespec.tv_sec
  200 #endif
  201 
  202 #define S_ISUID 0004000                 /* set user id on execution */
  203 #define S_ISGID 0002000                 /* set group id on execution */
  204 #if __BSD_VISIBLE
  205 #define S_ISTXT 0001000                 /* sticky bit */
  206 #endif
  207 
  208 #define S_IRWXU 0000700                 /* RWX mask for owner */
  209 #define S_IRUSR 0000400                 /* R for owner */
  210 #define S_IWUSR 0000200                 /* W for owner */
  211 #define S_IXUSR 0000100                 /* X for owner */
  212 
  213 #if __BSD_VISIBLE
  214 #define S_IREAD         S_IRUSR
  215 #define S_IWRITE        S_IWUSR
  216 #define S_IEXEC         S_IXUSR
  217 #endif
  218 
  219 #define S_IRWXG 0000070                 /* RWX mask for group */
  220 #define S_IRGRP 0000040                 /* R for group */
  221 #define S_IWGRP 0000020                 /* W for group */
  222 #define S_IXGRP 0000010                 /* X for group */
  223 
  224 #define S_IRWXO 0000007                 /* RWX mask for other */
  225 #define S_IROTH 0000004                 /* R for other */
  226 #define S_IWOTH 0000002                 /* W for other */
  227 #define S_IXOTH 0000001                 /* X for other */
  228 
  229 #if __XSI_VISIBLE
  230 #define S_IFMT   0170000                /* type of file mask */
  231 #define S_IFIFO  0010000                /* named pipe (fifo) */
  232 #define S_IFCHR  0020000                /* character special */
  233 #define S_IFDIR  0040000                /* directory */
  234 #define S_IFBLK  0060000                /* block special */
  235 #define S_IFREG  0100000                /* regular */
  236 #define S_IFLNK  0120000                /* symbolic link */
  237 #define S_IFSOCK 0140000                /* socket */
  238 #define S_ISVTX  0001000                /* save swapped text even after use */
  239 #endif
  240 #if __BSD_VISIBLE
  241 #define S_IFWHT  0160000                /* whiteout */
  242 #endif
  243 
  244 #define S_ISDIR(m)      (((m) & 0170000) == 0040000)    /* directory */
  245 #define S_ISCHR(m)      (((m) & 0170000) == 0020000)    /* char special */
  246 #define S_ISBLK(m)      (((m) & 0170000) == 0060000)    /* block special */
  247 #define S_ISREG(m)      (((m) & 0170000) == 0100000)    /* regular file */
  248 #define S_ISFIFO(m)     (((m) & 0170000) == 0010000)    /* fifo or socket */
  249 #if __POSIX_VISIBLE >= 200112
  250 #define S_ISLNK(m)      (((m) & 0170000) == 0120000)    /* symbolic link */
  251 #define S_ISSOCK(m)     (((m) & 0170000) == 0140000)    /* socket */
  252 #endif
  253 #if __XSI_VISIBLE
  254 #define S_ISWHT(m)      (((m) & 0170000) == 0160000)    /* whiteout */
  255 #endif
  256 
  257 #if __BSD_VISIBLE
  258 #define ACCESSPERMS     (S_IRWXU|S_IRWXG|S_IRWXO)       /* 0777 */
  259                                                         /* 7777 */
  260 #define ALLPERMS        (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
  261                                                         /* 0666 */
  262 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
  263 
  264 #define S_BLKSIZE       512             /* block size used in the stat struct */
  265 
  266 /*
  267  * Definitions of flags stored in file flags word.
  268  *
  269  * Super-user and owner changeable flags.
  270  */
  271 #define UF_SETTABLE     0x0000ffff      /* mask of owner changeable flags */
  272 #define UF_NODUMP       0x00000001      /* do not dump file */
  273 #define UF_IMMUTABLE    0x00000002      /* file may not be changed */
  274 #define UF_APPEND       0x00000004      /* writes to file may only append */
  275 #define UF_OPAQUE       0x00000008      /* directory is opaque wrt. union */
  276 #define UF_NOUNLINK     0x00000010      /* file may not be removed or renamed */
  277 /*
  278  * Super-user changeable flags.
  279  */
  280 #define SF_SETTABLE     0xffff0000      /* mask of superuser changeable flags */
  281 #define SF_ARCHIVED     0x00010000      /* file is archived */
  282 #define SF_IMMUTABLE    0x00020000      /* file may not be changed */
  283 #define SF_APPEND       0x00040000      /* writes to file may only append */
  284 #define SF_NOUNLINK     0x00100000      /* file may not be removed or renamed */
  285 #define SF_SNAPSHOT     0x00200000      /* snapshot inode */
  286 
  287 #ifdef _KERNEL
  288 /*
  289  * Shorthand abbreviations of above.
  290  */
  291 #define OPAQUE          (UF_OPAQUE)
  292 #define APPEND          (UF_APPEND | SF_APPEND)
  293 #define IMMUTABLE       (UF_IMMUTABLE | SF_IMMUTABLE)
  294 #define NOUNLINK        (UF_NOUNLINK | SF_NOUNLINK)
  295 #endif
  296 
  297 #endif /* __BSD_VISIBLE */
  298 
  299 #ifndef _KERNEL
  300 __BEGIN_DECLS
  301 #if __BSD_VISIBLE
  302 int     chflags(const char *, unsigned long);
  303 #endif
  304 int     chmod(const char *, mode_t);
  305 #if __BSD_VISIBLE
  306 int     fchflags(int, unsigned long);
  307 int     fchmod(int, mode_t);
  308 #endif
  309 int     fstat(int, struct stat *);
  310 #if __BSD_VISIBLE
  311 int     lchflags(const char *, int);
  312 int     lchmod(const char *, mode_t);
  313 #endif
  314 #if __POSIX_VISIBLE >= 200112
  315 int     lstat(const char *, struct stat *);
  316 #endif
  317 int     mkdir(const char *, mode_t);
  318 int     mkfifo(const char *, mode_t);
  319 int     stat(const char *, struct stat *);
  320 mode_t  umask(mode_t);
  321 __END_DECLS
  322 #endif /* !_KERNEL */
  323 
  324 #endif /* !_SYS_STAT_H_ */

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