usr/src/head/fts.h

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef _FTS_H
  31 #define _FTS_H
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 typedef struct {
  38         struct _ftsent *fts_cur;        /* current node */
  39         struct _ftsent *fts_child;      /* linked list of children */
  40         struct _ftsent **fts_array;     /* sort array */
  41         dev_t fts_dev;                  /* starting device # */
  42         char *fts_path;                 /* path for this descent */
  43         int fts_rfd;                    /* fd for root */
  44         size_t fts_pathlen;             /* sizeof(path) */
  45         int fts_nitems;                 /* elements in the sort array */
  46         int (*fts_compar)();            /* compare function */
  47
  48 #define FTS_COMFOLLOW   0x0001          /* follow command line symlinks */
  49 #define FTS_LOGICAL     0x0002          /* logical walk */
  50 #define FTS_NOCHDIR     0x0004          /* don't change directories */
  51 #define FTS_NOSTAT      0x0008          /* don't get stat info */
  52 #define FTS_PHYSICAL    0x0010          /* physical walk */
  53 #define FTS_SEEDOT      0x0020          /* return dot and dot-dot */
  54 #define FTS_XDEV        0x0040          /* don't cross devices */
  55 #define FTS_OPTIONMASK  0x00ff          /* valid user option mask */
  56
  57 #define FTS_NAMEONLY    0x1000          /* (private) child names only */
  58 #define FTS_STOP        0x2000          /* (private) unrecoverable error */
  59         int fts_options;                /* fts_open options, global flags */
  60 } FTS;
  61
  62 typedef struct _ftsent {
  63         struct _ftsent *fts_cycle;      /* cycle node */
  64         struct _ftsent *fts_parent;     /* parent directory */
  65         struct _ftsent *fts_link;       /* next file in directory */
  66         long fts_number;                /* local numeric value */
  67         void *fts_pointer;              /* local address value */
  68         char *fts_accpath;              /* access path */
  69         char *fts_path;                 /* root path */
  70         int fts_errno;                  /* errno for this node */
  71         int fts_symfd;                  /* fd for symlink */
  72         size_t fts_pathlen;             /* strlen(fts_path) */
  73         size_t fts_namelen;             /* strlen(fts_name) */
  74
  75         ino_t fts_ino;                  /* inode */
  76         dev_t fts_dev;                  /* device */
  77         nlink_t fts_nlink;              /* link count */
  78
  79 #define FTS_ROOTPARENTLEVEL     -1
  80 #define FTS_ROOTLEVEL            0
  81 #define FTS_MAXLEVEL             0x7fffffff
  82         int fts_level;          /* depth (-1 to N) */
  83
  84 #define FTS_D            1              /* preorder directory */
  85 #define FTS_DC           2              /* directory that causes cycles */
  86 #define FTS_DEFAULT      3              /* none of the above */
  87 #define FTS_DNR          4              /* unreadable directory */
  88 #define FTS_DOT          5              /* dot or dot-dot */
  89 #define FTS_DP           6              /* postorder directory */
  90 #define FTS_ERR          7              /* error; errno is set */
  91 #define FTS_F            8              /* regular file */
  92 #define FTS_INIT         9              /* initialized only */
  93 #define FTS_NS          10              /* stat(2) failed */
  94 #define FTS_NSOK        11              /* no stat(2) requested */
  95 #define FTS_SL          12              /* symbolic link */
  96 #define FTS_SLNONE      13              /* symbolic link without target */
  97         unsigned short fts_info;        /* user flags for FTSENT structure */
  98
  99 #define FTS_DONTCHDIR    0x01           /* don't chdir .. to the parent */
 100 #define FTS_SYMFOLLOW    0x02           /* followed a symlink to get here */
 101         unsigned short fts_flags;       /* private flags for FTSENT structure */
 102
 103 #define FTS_AGAIN        1              /* read node again */
 104 #define FTS_FOLLOW       2              /* follow symbolic link */
 105 #define FTS_NOINSTR      3              /* no instructions */
 106 #define FTS_SKIP         4              /* discard node */
 107         unsigned short fts_instr;       /* fts_set() instructions */
 108
 109         unsigned short fts_spare;       /* unused */
 110
 111         struct stat *fts_statp;         /* stat(2) information */
 112         char fts_name[1];               /* file name */
 113 } FTSENT;
 114
 115 FTSENT  *fts_children(FTS *, int);
 116 int      fts_close(FTS *);
 117 FTS     *fts_open(char * const *, int,
 118             int (*)(const FTSENT **, const FTSENT **));
 119 FTSENT  *fts_read(FTS *);
 120 int      fts_set(FTS *, FTSENT *, int);
 121
 122 #ifdef  __cplusplus
 123 }
 124 #endif
 125
 126 #endif /* !_FTS_H */