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/5.2/sys/sys/stat.h 115230 2003-05-22 17:07:57Z 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 /* XXX missing blkcnt_t, blksize_t. */
   49 
   50 #ifndef _DEV_T_DECLARED
   51 typedef __dev_t         dev_t;
   52 #define _DEV_T_DECLARED
   53 #endif
   54 
   55 #ifndef _FFLAGS_T_DECLARED
   56 typedef __fflags_t      fflags_t;
   57 #define _FFLAGS_T_DECLARED
   58 #endif
   59 
   60 #ifndef _GID_T_DECLARED
   61 typedef __gid_t         gid_t;
   62 #define _GID_T_DECLARED
   63 #endif
   64 
   65 #ifndef _INO_T_DECLARED
   66 typedef __ino_t         ino_t;
   67 #define _INO_T_DECLARED
   68 #endif
   69 
   70 #ifndef _MODE_T_DECLARED
   71 typedef __mode_t        mode_t;
   72 #define _MODE_T_DECLARED
   73 #endif
   74 
   75 #ifndef _NLINK_T_DECLARED
   76 typedef __nlink_t       nlink_t;
   77 #define _NLINK_T_DECLARED
   78 #endif
   79 
   80 #ifndef _OFF_T_DECLARED
   81 typedef __off_t         off_t;
   82 #define _OFF_T_DECLARED
   83 #endif
   84 
   85 #ifndef _TIME_T_DECLARED
   86 typedef __time_t        time_t;
   87 #define _TIME_T_DECLARED
   88 #endif
   89 
   90 #ifndef _UID_T_DECLARED
   91 typedef __uid_t         uid_t;
   92 #define _UID_T_DECLARED
   93 #endif
   94 
   95 #if !defined(_KERNEL) && __BSD_VISIBLE
   96 /*
   97  * XXX we need this for struct timespec.  We get miscellaneous namespace
   98  * pollution with it.
   99  */
  100 #include <sys/time.h>
  101 #endif
  102 
  103 #if !__BSD_VISIBLE
  104 #include <sys/_timespec.h>
  105 #endif
  106 
  107 #if __BSD_VISIBLE
  108 struct ostat {
  109         __uint16_t st_dev;              /* inode's device */
  110         ino_t     st_ino;               /* inode's number */
  111         mode_t    st_mode;              /* inode protection mode */
  112         nlink_t   st_nlink;             /* number of hard links */
  113         __uint16_t st_uid;              /* user ID of the file's owner */
  114         __uint16_t st_gid;              /* group ID of the file's group */
  115         __uint16_t st_rdev;             /* device type */
  116         __int32_t st_size;              /* file size, in bytes */
  117         struct  timespec st_atimespec;  /* time of last access */
  118         struct  timespec st_mtimespec;  /* time of last data modification */
  119         struct  timespec st_ctimespec;  /* time of last file status change */
  120         __int32_t st_blksize;           /* optimal blocksize for I/O */
  121         __int32_t st_blocks;            /* blocks allocated for file */
  122         fflags_t  st_flags;             /* user defined flags for file */
  123         __uint32_t st_gen;              /* file generation number */
  124 };
  125 #endif /* __BSD_VISIBLE */
  126 
  127 struct stat {
  128         __udev_t  st_dev;               /* inode's device */
  129         ino_t     st_ino;               /* inode's number */
  130         mode_t    st_mode;              /* inode protection mode */
  131         nlink_t   st_nlink;             /* number of hard links */
  132         uid_t     st_uid;               /* user ID of the file's owner */
  133         gid_t     st_gid;               /* group ID of the file's group */
  134         __udev_t  st_rdev;              /* device type */
  135 #if __BSD_VISIBLE
  136         struct  timespec st_atimespec;  /* time of last access */
  137         struct  timespec st_mtimespec;  /* time of last data modification */
  138         struct  timespec st_ctimespec;  /* time of last file status change */
  139 #else
  140         time_t    st_atime;             /* time of last access */
  141         long      st_atimensec;         /* nsec of last access */
  142         time_t    st_mtime;             /* time of last data modification */
  143         long      st_mtimensec;         /* nsec of last data modification */
  144         time_t    st_ctime;             /* time of last file status change */
  145         long      st_ctimensec;         /* nsec of last file status change */
  146 #endif
  147         off_t     st_size;              /* file size, in bytes */
  148         __int64_t st_blocks;            /* blocks allocated for file */
  149         __uint32_t st_blksize;          /* optimal blocksize for I/O */
  150         fflags_t  st_flags;             /* user defined flags for file */
  151         __uint32_t st_gen;              /* file generation number */
  152         __int32_t st_lspare;
  153 #if __BSD_VISIBLE
  154         struct timespec st_birthtimespec; /* time of file creation */
  155         /*
  156          * Explicitly pad st_birthtimespec to 16 bytes so that the size of
  157          * struct stat is backwards compatible.  We use bitfields instead
  158          * of an array of chars so that this doesn't require a C99 compiler
  159          * to compile if the size of the padding is 0.  We use 2 bitfields
  160          * to cover up to 64 bits on 32-bit machines.  We assume that
  161          * CHAR_BIT is 8...
  162          */
  163         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  164         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  165 #else
  166         time_t    st_birthtime;         /* time of file creation */
  167         long      st_birthtimensec;     /* nsec of file creation */
  168         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  169         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  170 #endif
  171 };
  172 
  173 #if __BSD_VISIBLE
  174 struct nstat {
  175         __udev_t st_dev;                /* inode's device */
  176         ino_t     st_ino;               /* inode's number */
  177         __uint32_t st_mode;             /* inode protection mode */
  178         __uint32_t st_nlink;            /* number of hard links */
  179         uid_t     st_uid;               /* user ID of the file's owner */
  180         gid_t     st_gid;               /* group ID of the file's group */
  181         __udev_t st_rdev;               /* device type */
  182         struct  timespec st_atimespec;  /* time of last access */
  183         struct  timespec st_mtimespec;  /* time of last data modification */
  184         struct  timespec st_ctimespec;  /* time of last file status change */
  185         off_t     st_size;              /* file size, in bytes */
  186         __int64_t st_blocks;            /* blocks allocated for file */
  187         __uint32_t st_blksize;          /* optimal blocksize for I/O */
  188         fflags_t  st_flags;             /* user defined flags for file */
  189         __uint32_t st_gen;              /* file generation number */
  190         struct timespec st_birthtimespec; /* time of file creation */
  191         /*
  192          * See above about the following padding.
  193          */
  194         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  195         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  196 };
  197 #endif
  198 
  199 #if __BSD_VISIBLE
  200 #define st_atime st_atimespec.tv_sec
  201 #define st_mtime st_mtimespec.tv_sec
  202 #define st_ctime st_ctimespec.tv_sec
  203 #define st_birthtime st_birthtimespec.tv_sec
  204 #endif
  205 
  206 #define S_ISUID 0004000                 /* set user id on execution */
  207 #define S_ISGID 0002000                 /* set group id on execution */
  208 #if __BSD_VISIBLE
  209 #define S_ISTXT 0001000                 /* sticky bit */
  210 #endif
  211 
  212 #define S_IRWXU 0000700                 /* RWX mask for owner */
  213 #define S_IRUSR 0000400                 /* R for owner */
  214 #define S_IWUSR 0000200                 /* W for owner */
  215 #define S_IXUSR 0000100                 /* X for owner */
  216 
  217 #if __BSD_VISIBLE
  218 #define S_IREAD         S_IRUSR
  219 #define S_IWRITE        S_IWUSR
  220 #define S_IEXEC         S_IXUSR
  221 #endif
  222 
  223 #define S_IRWXG 0000070                 /* RWX mask for group */
  224 #define S_IRGRP 0000040                 /* R for group */
  225 #define S_IWGRP 0000020                 /* W for group */
  226 #define S_IXGRP 0000010                 /* X for group */
  227 
  228 #define S_IRWXO 0000007                 /* RWX mask for other */
  229 #define S_IROTH 0000004                 /* R for other */
  230 #define S_IWOTH 0000002                 /* W for other */
  231 #define S_IXOTH 0000001                 /* X for other */
  232 
  233 #if __XSI_VISIBLE
  234 #define S_IFMT   0170000                /* type of file mask */
  235 #define S_IFIFO  0010000                /* named pipe (fifo) */
  236 #define S_IFCHR  0020000                /* character special */
  237 #define S_IFDIR  0040000                /* directory */
  238 #define S_IFBLK  0060000                /* block special */
  239 #define S_IFREG  0100000                /* regular */
  240 #define S_IFLNK  0120000                /* symbolic link */
  241 #define S_IFSOCK 0140000                /* socket */
  242 #define S_ISVTX  0001000                /* save swapped text even after use */
  243 #endif
  244 #if __BSD_VISIBLE
  245 #define S_IFWHT  0160000                /* whiteout */
  246 #endif
  247 
  248 #define S_ISDIR(m)      (((m) & 0170000) == 0040000)    /* directory */
  249 #define S_ISCHR(m)      (((m) & 0170000) == 0020000)    /* char special */
  250 #define S_ISBLK(m)      (((m) & 0170000) == 0060000)    /* block special */
  251 #define S_ISREG(m)      (((m) & 0170000) == 0100000)    /* regular file */
  252 #define S_ISFIFO(m)     (((m) & 0170000) == 0010000)    /* fifo or socket */
  253 #if __POSIX_VISIBLE >= 200112
  254 #define S_ISLNK(m)      (((m) & 0170000) == 0120000)    /* symbolic link */
  255 #define S_ISSOCK(m)     (((m) & 0170000) == 0140000)    /* socket */
  256 #endif
  257 #if __XSI_VISIBLE
  258 #define S_ISWHT(m)      (((m) & 0170000) == 0160000)    /* whiteout */
  259 #endif
  260 
  261 #if __BSD_VISIBLE
  262 #define ACCESSPERMS     (S_IRWXU|S_IRWXG|S_IRWXO)       /* 0777 */
  263                                                         /* 7777 */
  264 #define ALLPERMS        (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
  265                                                         /* 0666 */
  266 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
  267 
  268 #define S_BLKSIZE       512             /* block size used in the stat struct */
  269 
  270 /*
  271  * Definitions of flags stored in file flags word.
  272  *
  273  * Super-user and owner changeable flags.
  274  */
  275 #define UF_SETTABLE     0x0000ffff      /* mask of owner changeable flags */
  276 #define UF_NODUMP       0x00000001      /* do not dump file */
  277 #define UF_IMMUTABLE    0x00000002      /* file may not be changed */
  278 #define UF_APPEND       0x00000004      /* writes to file may only append */
  279 #define UF_OPAQUE       0x00000008      /* directory is opaque wrt. union */
  280 #define UF_NOUNLINK     0x00000010      /* file may not be removed or renamed */
  281 /*
  282  * Super-user changeable flags.
  283  */
  284 #define SF_SETTABLE     0xffff0000      /* mask of superuser changeable flags */
  285 #define SF_ARCHIVED     0x00010000      /* file is archived */
  286 #define SF_IMMUTABLE    0x00020000      /* file may not be changed */
  287 #define SF_APPEND       0x00040000      /* writes to file may only append */
  288 #define SF_NOUNLINK     0x00100000      /* file may not be removed or renamed */
  289 #define SF_SNAPSHOT     0x00200000      /* snapshot inode */
  290 
  291 #ifdef _KERNEL
  292 /*
  293  * Shorthand abbreviations of above.
  294  */
  295 #define OPAQUE          (UF_OPAQUE)
  296 #define APPEND          (UF_APPEND | SF_APPEND)
  297 #define IMMUTABLE       (UF_IMMUTABLE | SF_IMMUTABLE)
  298 #define NOUNLINK        (UF_NOUNLINK | SF_NOUNLINK)
  299 #endif
  300 
  301 #endif /* __BSD_VISIBLE */
  302 
  303 #ifndef _KERNEL
  304 __BEGIN_DECLS
  305 #if __BSD_VISIBLE
  306 int     chflags(const char *, unsigned long);
  307 #endif
  308 int     chmod(const char *, mode_t);
  309 #if __BSD_VISIBLE
  310 int     fchflags(int, unsigned long);
  311 int     fchmod(int, mode_t);
  312 #endif
  313 int     fstat(int, struct stat *);
  314 #if __BSD_VISIBLE
  315 int     lchflags(const char *, int);
  316 int     lchmod(const char *, mode_t);
  317 #endif
  318 #if __POSIX_VISIBLE >= 200112
  319 int     lstat(const char *, struct stat *);
  320 #endif
  321 int     mkdir(const char *, mode_t);
  322 int     mkfifo(const char *, mode_t);
  323 int     stat(const char *, struct stat *);
  324 mode_t  umask(mode_t);
  325 __END_DECLS
  326 #endif /* !_KERNEL */
  327 
  328 #endif /* !_SYS_STAT_H_ */

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