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: releng/6.4/sys/sys/stat.h 143952 2005-03-22 01:19:18Z das $
   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 #ifndef _BLKSIZE_T_DECLARED
   45 typedef __blksize_t     blksize_t;
   46 #define _BLKSIZE_T_DECLARED
   47 #endif
   48 
   49 #ifndef _BLKCNT_T_DECLARED
   50 typedef __blkcnt_t      blkcnt_t;
   51 #define _BLKCNT_T_DECLARED
   52 #endif
   53 
   54 #ifndef _DEV_T_DECLARED
   55 typedef __dev_t         dev_t;
   56 #define _DEV_T_DECLARED
   57 #endif
   58 
   59 #ifndef _FFLAGS_T_DECLARED
   60 typedef __fflags_t      fflags_t;
   61 #define _FFLAGS_T_DECLARED
   62 #endif
   63 
   64 #ifndef _GID_T_DECLARED
   65 typedef __gid_t         gid_t;
   66 #define _GID_T_DECLARED
   67 #endif
   68 
   69 #ifndef _INO_T_DECLARED
   70 typedef __ino_t         ino_t;
   71 #define _INO_T_DECLARED
   72 #endif
   73 
   74 #ifndef _MODE_T_DECLARED
   75 typedef __mode_t        mode_t;
   76 #define _MODE_T_DECLARED
   77 #endif
   78 
   79 #ifndef _NLINK_T_DECLARED
   80 typedef __nlink_t       nlink_t;
   81 #define _NLINK_T_DECLARED
   82 #endif
   83 
   84 #ifndef _OFF_T_DECLARED
   85 typedef __off_t         off_t;
   86 #define _OFF_T_DECLARED
   87 #endif
   88 
   89 #ifndef _TIME_T_DECLARED
   90 typedef __time_t        time_t;
   91 #define _TIME_T_DECLARED
   92 #endif
   93 
   94 #ifndef _UID_T_DECLARED
   95 typedef __uid_t         uid_t;
   96 #define _UID_T_DECLARED
   97 #endif
   98 
   99 #if !defined(_KERNEL) && __BSD_VISIBLE
  100 /*
  101  * XXX we need this for struct timespec.  We get miscellaneous namespace
  102  * pollution with it.
  103  */
  104 #include <sys/time.h>
  105 #endif
  106 
  107 #if !__BSD_VISIBLE
  108 #include <sys/_timespec.h>
  109 #endif
  110 
  111 #if __BSD_VISIBLE
  112 struct ostat {
  113         __uint16_t st_dev;              /* inode's device */
  114         ino_t     st_ino;               /* inode's number */
  115         mode_t    st_mode;              /* inode protection mode */
  116         nlink_t   st_nlink;             /* number of hard links */
  117         __uint16_t st_uid;              /* user ID of the file's owner */
  118         __uint16_t st_gid;              /* group ID of the file's group */
  119         __uint16_t st_rdev;             /* device type */
  120         __int32_t st_size;              /* file size, in bytes */
  121         struct  timespec st_atimespec;  /* time of last access */
  122         struct  timespec st_mtimespec;  /* time of last data modification */
  123         struct  timespec st_ctimespec;  /* time of last file status change */
  124         __int32_t st_blksize;           /* optimal blocksize for I/O */
  125         __int32_t st_blocks;            /* blocks allocated for file */
  126         fflags_t  st_flags;             /* user defined flags for file */
  127         __uint32_t st_gen;              /* file generation number */
  128 };
  129 #endif /* __BSD_VISIBLE */
  130 
  131 struct stat {
  132         __dev_t   st_dev;               /* inode's device */
  133         ino_t     st_ino;               /* inode's number */
  134         mode_t    st_mode;              /* inode protection mode */
  135         nlink_t   st_nlink;             /* number of hard links */
  136         uid_t     st_uid;               /* user ID of the file's owner */
  137         gid_t     st_gid;               /* group ID of the file's group */
  138         __dev_t   st_rdev;              /* device type */
  139 #if __BSD_VISIBLE
  140         struct  timespec st_atimespec;  /* time of last access */
  141         struct  timespec st_mtimespec;  /* time of last data modification */
  142         struct  timespec st_ctimespec;  /* time of last file status change */
  143 #else
  144         time_t    st_atime;             /* time of last access */
  145         long      __st_atimensec;       /* nsec of last access */
  146         time_t    st_mtime;             /* time of last data modification */
  147         long      __st_mtimensec;       /* nsec of last data modification */
  148         time_t    st_ctime;             /* time of last file status change */
  149         long      __st_ctimensec;       /* nsec of last file status change */
  150 #endif
  151         off_t     st_size;              /* file size, in bytes */
  152         blkcnt_t st_blocks;             /* blocks allocated for file */
  153         blksize_t st_blksize;           /* optimal blocksize for I/O */
  154         fflags_t  st_flags;             /* user defined flags for file */
  155         __uint32_t st_gen;              /* file generation number */
  156         __int32_t st_lspare;
  157 #if __BSD_VISIBLE
  158         struct timespec st_birthtimespec; /* time of file creation */
  159         /*
  160          * Explicitly pad st_birthtimespec to 16 bytes so that the size of
  161          * struct stat is backwards compatible.  We use bitfields instead
  162          * of an array of chars so that this doesn't require a C99 compiler
  163          * to compile if the size of the padding is 0.  We use 2 bitfields
  164          * to cover up to 64 bits on 32-bit machines.  We assume that
  165          * CHAR_BIT is 8...
  166          */
  167         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  168         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  169 #else
  170         time_t    st_birthtime;         /* time of file creation */
  171         long      st_birthtimensec;     /* nsec of file creation */
  172         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  173         unsigned int :(8 / 2) * (16 - (int)sizeof(struct __timespec));
  174 #endif
  175 };
  176 
  177 #if __BSD_VISIBLE
  178 struct nstat {
  179         __dev_t   st_dev;               /* inode's device */
  180         ino_t     st_ino;               /* inode's number */
  181         __uint32_t st_mode;             /* inode protection mode */
  182         __uint32_t st_nlink;            /* number of hard links */
  183         uid_t     st_uid;               /* user ID of the file's owner */
  184         gid_t     st_gid;               /* group ID of the file's group */
  185         __dev_t   st_rdev;              /* device type */
  186         struct  timespec st_atimespec;  /* time of last access */
  187         struct  timespec st_mtimespec;  /* time of last data modification */
  188         struct  timespec st_ctimespec;  /* time of last file status change */
  189         off_t     st_size;              /* file size, in bytes */
  190         blkcnt_t st_blocks;             /* blocks allocated for file */
  191         blksize_t st_blksize;           /* optimal blocksize for I/O */
  192         fflags_t  st_flags;             /* user defined flags for file */
  193         __uint32_t st_gen;              /* file generation number */
  194         struct timespec st_birthtimespec; /* time of file creation */
  195         /*
  196          * See above about the following padding.
  197          */
  198         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  199         unsigned int :(8 / 2) * (16 - (int)sizeof(struct timespec));
  200 };
  201 #endif
  202 
  203 #if __BSD_VISIBLE
  204 #define st_atime st_atimespec.tv_sec
  205 #define st_mtime st_mtimespec.tv_sec
  206 #define st_ctime st_ctimespec.tv_sec
  207 #define st_birthtime st_birthtimespec.tv_sec
  208 #endif
  209 
  210 #define S_ISUID 0004000                 /* set user id on execution */
  211 #define S_ISGID 0002000                 /* set group id on execution */
  212 #if __BSD_VISIBLE
  213 #define S_ISTXT 0001000                 /* sticky bit */
  214 #endif
  215 
  216 #define S_IRWXU 0000700                 /* RWX mask for owner */
  217 #define S_IRUSR 0000400                 /* R for owner */
  218 #define S_IWUSR 0000200                 /* W for owner */
  219 #define S_IXUSR 0000100                 /* X for owner */
  220 
  221 #if __BSD_VISIBLE
  222 #define S_IREAD         S_IRUSR
  223 #define S_IWRITE        S_IWUSR
  224 #define S_IEXEC         S_IXUSR
  225 #endif
  226 
  227 #define S_IRWXG 0000070                 /* RWX mask for group */
  228 #define S_IRGRP 0000040                 /* R for group */
  229 #define S_IWGRP 0000020                 /* W for group */
  230 #define S_IXGRP 0000010                 /* X for group */
  231 
  232 #define S_IRWXO 0000007                 /* RWX mask for other */
  233 #define S_IROTH 0000004                 /* R for other */
  234 #define S_IWOTH 0000002                 /* W for other */
  235 #define S_IXOTH 0000001                 /* X for other */
  236 
  237 #if __XSI_VISIBLE
  238 #define S_IFMT   0170000                /* type of file mask */
  239 #define S_IFIFO  0010000                /* named pipe (fifo) */
  240 #define S_IFCHR  0020000                /* character special */
  241 #define S_IFDIR  0040000                /* directory */
  242 #define S_IFBLK  0060000                /* block special */
  243 #define S_IFREG  0100000                /* regular */
  244 #define S_IFLNK  0120000                /* symbolic link */
  245 #define S_IFSOCK 0140000                /* socket */
  246 #define S_ISVTX  0001000                /* save swapped text even after use */
  247 #endif
  248 #if __BSD_VISIBLE
  249 #define S_IFWHT  0160000                /* whiteout */
  250 #endif
  251 
  252 #define S_ISDIR(m)      (((m) & 0170000) == 0040000)    /* directory */
  253 #define S_ISCHR(m)      (((m) & 0170000) == 0020000)    /* char special */
  254 #define S_ISBLK(m)      (((m) & 0170000) == 0060000)    /* block special */
  255 #define S_ISREG(m)      (((m) & 0170000) == 0100000)    /* regular file */
  256 #define S_ISFIFO(m)     (((m) & 0170000) == 0010000)    /* fifo or socket */
  257 #if __POSIX_VISIBLE >= 200112
  258 #define S_ISLNK(m)      (((m) & 0170000) == 0120000)    /* symbolic link */
  259 #define S_ISSOCK(m)     (((m) & 0170000) == 0140000)    /* socket */
  260 #endif
  261 #if __BSD_VISIBLE
  262 #define S_ISWHT(m)      (((m) & 0170000) == 0160000)    /* whiteout */
  263 #endif
  264 
  265 #if __BSD_VISIBLE
  266 #define ACCESSPERMS     (S_IRWXU|S_IRWXG|S_IRWXO)       /* 0777 */
  267                                                         /* 7777 */
  268 #define ALLPERMS        (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
  269                                                         /* 0666 */
  270 #define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
  271 
  272 #define S_BLKSIZE       512             /* block size used in the stat struct */
  273 
  274 /*
  275  * Definitions of flags stored in file flags word.
  276  *
  277  * Super-user and owner changeable flags.
  278  */
  279 #define UF_SETTABLE     0x0000ffff      /* mask of owner changeable flags */
  280 #define UF_NODUMP       0x00000001      /* do not dump file */
  281 #define UF_IMMUTABLE    0x00000002      /* file may not be changed */
  282 #define UF_APPEND       0x00000004      /* writes to file may only append */
  283 #define UF_OPAQUE       0x00000008      /* directory is opaque wrt. union */
  284 #define UF_NOUNLINK     0x00000010      /* file may not be removed or renamed */
  285 /*
  286  * Super-user changeable flags.
  287  */
  288 #define SF_SETTABLE     0xffff0000      /* mask of superuser changeable flags */
  289 #define SF_ARCHIVED     0x00010000      /* file is archived */
  290 #define SF_IMMUTABLE    0x00020000      /* file may not be changed */
  291 #define SF_APPEND       0x00040000      /* writes to file may only append */
  292 #define SF_NOUNLINK     0x00100000      /* file may not be removed or renamed */
  293 #define SF_SNAPSHOT     0x00200000      /* snapshot inode */
  294 
  295 #ifdef _KERNEL
  296 /*
  297  * Shorthand abbreviations of above.
  298  */
  299 #define OPAQUE          (UF_OPAQUE)
  300 #define APPEND          (UF_APPEND | SF_APPEND)
  301 #define IMMUTABLE       (UF_IMMUTABLE | SF_IMMUTABLE)
  302 #define NOUNLINK        (UF_NOUNLINK | SF_NOUNLINK)
  303 #endif
  304 
  305 #endif /* __BSD_VISIBLE */
  306 
  307 #ifndef _KERNEL
  308 __BEGIN_DECLS
  309 #if __BSD_VISIBLE
  310 int     chflags(const char *, unsigned long);
  311 #endif
  312 int     chmod(const char *, mode_t);
  313 #if __BSD_VISIBLE
  314 int     fchflags(int, unsigned long);
  315 int     fchmod(int, mode_t);
  316 #endif
  317 int     fstat(int, struct stat *);
  318 #if __BSD_VISIBLE
  319 int     lchflags(const char *, int);
  320 int     lchmod(const char *, mode_t);
  321 #endif
  322 #if __POSIX_VISIBLE >= 200112
  323 int     lstat(const char * __restrict, struct stat * __restrict);
  324 #endif
  325 int     mkdir(const char *, mode_t);
  326 int     mkfifo(const char *, mode_t);
  327 #if !defined(_MKNOD_DECLARED) && __XSI_VISIBLE
  328 int     mknod(const char *, mode_t, dev_t);
  329 #define _MKNOD_DECLARED
  330 #endif
  331 int     stat(const char * __restrict, struct stat * __restrict);
  332 mode_t  umask(mode_t);
  333 __END_DECLS
  334 #endif /* !_KERNEL */
  335 
  336 #endif /* !_SYS_STAT_H_ */

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