find/defs.h

   1 /* defs.h -- data types and declarations.
   2    Copyright (C) 1990, 91, 92, 93, 94, 2000, 2004 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17    USA.
  18 */
  19 #ifndef INC_DEFS_H
  20 #define INC_DEFS_H 1
  21
  22 #include <config.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <stdio.h>
  26
  27 #if defined(HAVE_STRING_H) || defined(STDC_HEADERS)
  28 #include <string.h>
  29 #else
  30 #include <strings.h>
  31 #ifndef strchr
  32 #define strchr index
  33 #endif
  34 #ifndef strrchr
  35 #define strrchr rindex
  36 #endif
  37 #endif
  38
  39 #include <errno.h>
  40 #ifndef errno
  41 extern int errno;
  42 #endif
  43
  44 #ifdef STDC_HEADERS
  45 #include <stdlib.h>
  46 #endif
  47
  48 /* The presence of unistd.h is assumed by gnulib these days, so we
  49  * might as well assume it too.
  50  */
  51 #include <unistd.h>
  52
  53 #include <time.h>
  54
  55 #if HAVE_LIMITS_H
  56 # include <limits.h>
  57 #endif
  58 #ifndef CHAR_BIT
  59 # define CHAR_BIT 8
  60 #endif
  61
  62 #if HAVE_INTTYPES_H
  63 # include <inttypes.h>
  64 #endif
  65
  66 #include "regex.h"
  67
  68 #ifndef S_IFLNK
  69 #define lstat stat
  70 #endif
  71
  72 # ifndef PARAMS
  73 #  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
  74 #   define PARAMS(Args) Args
  75 #  else
  76 #   define PARAMS(Args) ()
  77 #  endif
  78 # endif
  79
  80 int lstat PARAMS((const char *__path, struct stat *__statbuf));
  81 int stat PARAMS((const char *__path, struct stat *__statbuf));
  82
  83 int optionl_stat PARAMS((const char *name, struct stat *p));
  84 int optionp_stat PARAMS((const char *name, struct stat *p));
  85 int optionh_stat PARAMS((const char *name, struct stat *p));
  86
  87 int get_statinfo PARAMS((const char *pathname, const char *name, struct stat *p));
  88
  89
  90
  91 #ifndef S_ISUID
  92 # define S_ISUID 0004000
  93 #endif
  94 #ifndef S_ISGID
  95 # define S_ISGID 0002000
  96 #endif
  97 #ifndef S_ISVTX
  98 # define S_ISVTX 0001000
  99 #endif
 100 #ifndef S_IRUSR
 101 # define S_IRUSR 0000400
 102 #endif
 103 #ifndef S_IWUSR
 104 # define S_IWUSR 0000200
 105 #endif
 106 #ifndef S_IXUSR
 107 # define S_IXUSR 0000100
 108 #endif
 109 #ifndef S_IRGRP
 110 # define S_IRGRP 0000040
 111 #endif
 112 #ifndef S_IWGRP
 113 # define S_IWGRP 0000020
 114 #endif
 115 #ifndef S_IXGRP
 116 # define S_IXGRP 0000010
 117 #endif
 118 #ifndef S_IROTH
 119 # define S_IROTH 0000004
 120 #endif
 121 #ifndef S_IWOTH
 122 # define S_IWOTH 0000002
 123 #endif
 124 #ifndef S_IXOTH
 125 # define S_IXOTH 0000001
 126 #endif
 127
 128 #define MODE_WXUSR      (S_IWUSR | S_IXUSR)
 129 #define MODE_R          (S_IRUSR | S_IRGRP | S_IROTH)
 130 #define MODE_RW         (S_IWUSR | S_IWGRP | S_IWOTH | MODE_R)
 131 #define MODE_RWX        (S_IXUSR | S_IXGRP | S_IXOTH | MODE_RW)
 132 #define MODE_ALL        (S_ISUID | S_ISGID | S_ISVTX | MODE_RWX)
 133
 134 #if 1
 135 #include <stdbool.h>
 136 typedef bool boolean;
 137 #else
 138 /* Not char because of type promotion; NeXT gcc can't handle it.  */
 139 typedef int boolean;
 140 #define         true    1
 141 #define         false   0
 142 #endif
 143
 144 struct predicate;
 145
 146 /* Pointer to a predicate function. */
 147 typedef boolean (*PRED_FUNC)(char *pathname, struct stat *stat_buf, struct predicate *pred_ptr);
 148
 149 /* The number of seconds in a day. */
 150 #define         DAYSECS     86400
 151
 152 /* Argument structures for predicates. */
 153
 154 enum comparison_type
 155 {
 156   COMP_GT,
 157   COMP_LT,
 158   COMP_EQ
 159 };
 160
 161 enum permissions_type
 162 {
 163   PERM_AT_LEAST,
 164   PERM_ANY,
 165   PERM_EXACT
 166 };
 167
 168 enum predicate_type
 169 {
 170   NO_TYPE,
 171   PRIMARY_TYPE,
 172   UNI_OP,
 173   BI_OP,
 174   OPEN_PAREN,
 175   CLOSE_PAREN
 176 };
 177
 178 enum predicate_precedence
 179 {
 180   NO_PREC,
 181   COMMA_PREC,
 182   OR_PREC,
 183   AND_PREC,
 184   NEGATE_PREC,
 185   MAX_PREC
 186 };
 187
 188 struct long_val
 189 {
 190   enum comparison_type kind;
 191   boolean negative;             /* Defined only when representing time_t.  */
 192   uintmax_t l_val;
 193 };
 194
 195 struct perm_val
 196 {
 197   enum permissions_type kind;
 198   mode_t val;
 199 };
 200
 201 /* dir_id is used to support loop detection in find.c and
 202  * also to support the -samefile test.
 203  */
 204 struct dir_id
 205 {
 206   ino_t ino;
 207   dev_t dev;
 208 };
 209
 210 struct size_val
 211 {
 212   enum comparison_type kind;
 213   int blocksize;
 214   uintmax_t size;
 215 };
 216
 217 #define NEW_EXEC 1
 218 /*
 219 #undef NEW_EXEC
 220 */
 221
 222 #if !defined(NEW_EXEC)
 223 struct path_arg
 224 {
 225   short offset;                 /* Offset in `vec' of this arg. */
 226   short count;                  /* Number of path replacements in this arg. */
 227   char *origarg;                /* Arg with "{}" intact. */
 228 };
 229 #endif
 230
 231 #include "buildcmd.h"
 232
 233 struct exec_val
 234 {
 235 #if defined(NEW_EXEC)
 236   /* new-style */
 237   boolean multiple;             /* -exec {} \+ denotes multiple argument. */
 238   struct buildcmd_control ctl;
 239   struct buildcmd_state   state;
 240   char **replace_vec;           /* Command arguments (for ";" style) */
 241   int num_args;
 242   boolean use_current_dir;      /* If nonzero, don't chdir to start dir */
 243   boolean close_stdin;          /* If true, close stdin in the child. */
 244 #else
 245   struct path_arg *paths;       /* Array of args with path replacements. */
 246   char **vec;                   /* Array of args to pass to program. */
 247 #endif
 248 };
 249
 250 /* The format string for a -printf or -fprintf is chopped into one or
 251    more `struct segment', linked together into a list.
 252    Each stretch of plain text is a segment, and
 253    each \c and `%' conversion is a segment. */
 254
 255 /* Special values for the `kind' field of `struct segment'. */
 256 #define KIND_PLAIN 0            /* Segment containing just plain text. */
 257 #define KIND_STOP 1             /* \c -- stop printing and flush output. */
 258
 259 struct segment
 260 {
 261   int kind;                     /* Format chars or KIND_{PLAIN,STOP}. */
 262   char *text;                   /* Plain text or `%' format string. */
 263   int text_len;                 /* Length of `text'. */
 264   struct segment *next;         /* Next segment for this predicate. */
 265 };
 266
 267 struct format_val
 268 {
 269   struct segment *segment;      /* Linked list of segments. */
 270   FILE *stream;                 /* Output stream to print on. */
 271   boolean dest_is_tty;          /* True if the destination is a terminal. */
 272   struct quoting_options *quote_opts;
 273 };
 274
 275 struct predicate
 276 {
 277   /* Pointer to the function that implements this predicate.  */
 278   PRED_FUNC pred_func;
 279
 280   /* Only used for debugging, but defined unconditionally so individual
 281      modules can be compiled with -DDEBUG.  */
 282   char *p_name;
 283
 284   /* The type of this node.  There are two kinds.  The first is real
 285      predicates ("primaries") such as -perm, -print, or -exec.  The
 286      other kind is operators for combining predicates. */
 287   enum predicate_type p_type;
 288
 289   /* The precedence of this node.  Only has meaning for operators. */
 290   enum predicate_precedence p_prec;
 291
 292   /* True if this predicate node produces side effects.
 293      If side_effects are produced
 294      then optimization will not be performed */
 295   boolean side_effects;
 296
 297   /* True if this predicate node requires default print be turned off. */
 298   boolean no_default_print;
 299
 300   /* True if this predicate node requires a stat system call to execute. */
 301   boolean need_stat;
 302
 303   /* True if this predicate node requires knowledge of the file type. */
 304   boolean need_type;
 305
 306   /* Information needed by the predicate processor.
 307      Next to each member are listed the predicates that use it. */
 308   union
 309   {
 310     char *str;                  /* fstype [i]lname [i]name [i]path */
 311     struct re_pattern_buffer *regex; /* regex */
 312     struct exec_val exec_vec;   /* exec ok */
 313     struct long_val info;       /* atime ctime gid inum links mtime
 314                                    size uid */
 315     struct size_val size;       /* size */
 316     uid_t uid;                  /* user */
 317     gid_t gid;                  /* group */
 318     time_t time;                /* newer */
 319     struct perm_val perm;       /* perm */
 320     struct dir_id   fileid;     /* samefile */
 321     mode_t type;                /* type */
 322     FILE *stream;               /* ls fls fprint0 */
 323     struct format_val printf_vec; /* printf fprintf fprint  */
 324   } args;
 325
 326   /* The next predicate in the user input sequence,
 327      which represents the order in which the user supplied the
 328      predicates on the command line. */
 329   struct predicate *pred_next;
 330
 331   /* The right and left branches from this node in the expression
 332      tree, which represents the order in which the nodes should be
 333      processed. */
 334   struct predicate *pred_left;
 335   struct predicate *pred_right;
 336
 337   const struct parser_table* parser_entry;
 338 };
 339
 340 /* find.c. */
 341 int get_info PARAMS((const char *pathname, const char *name, struct stat *p, struct predicate *pred_ptr));
 342 int following_links(void);
 343
 344
 345 /* find library function declarations.  */
 346
 347 /* dirname.c */
 348 char *dirname PARAMS((char *path));
 349
 350 /* error.c */
 351 void error PARAMS((int status, int errnum, char *message, ...));
 352
 353 /* listfile.c */
 354 void list_file PARAMS((char *name, char *relname, struct stat *statp, time_t current_time, int output_block_size, FILE *stream));
 355 char *get_link_name PARAMS((char *name, char *relname));
 356
 357 /* stpcpy.c */
 358 #if !HAVE_STPCPY
 359 char *stpcpy PARAMS((char *dest, const char *src));
 360 #endif
 361
 362 /* xgetcwd.c */
 363 char *xgetcwd PARAMS((void));
 364
 365 /* xmalloc.c */
 366 #if __STDC__
 367 #define VOID void
 368 #else
 369 #define VOID char
 370 #endif
 371
 372 /* find global function declarations.  */
 373
 374 /* find.c */
 375 /* SymlinkOption represents the choice of
 376  * -P, -L or -P (default) on the command line.
 377  */
 378 enum SymlinkOption
 379   {
 380     SYMLINK_NEVER_DEREF,        /* Option -P */
 381     SYMLINK_ALWAYS_DEREF,       /* Option -L */
 382     SYMLINK_DEREF_ARGSONLY      /* Option -H */
 383   };
 384 extern enum SymlinkOption symlink_handling; /* defined in find.c. */
 385
 386 void set_follow_state PARAMS((enum SymlinkOption opt));
 387 void cleanup(void);
 388
 389 /* fstype.c */
 390 char *filesystem_type PARAMS((const struct stat *statp, const char *path));
 391 char * get_mounted_filesystems (void);
 392 dev_t * get_mounted_devices PARAMS((size_t *));
 393
 394
 395
 396 enum arg_type
 397   {
 398     ARG_OPTION,                 /* regular options like -maxdepth */
 399     ARG_POSITIONAL_OPTION,      /* options whose position is important (-follow) */
 400     ARG_TEST,                   /* a like -name */
 401     ARG_PUNCTUATION,            /* like -o or ( */
 402     ARG_ACTION                  /* like -print */
 403   };
 404
 405
 406 struct parser_table;
 407 /* Pointer to a parser function. */
 408 typedef boolean (*PARSE_FUNC)(const struct parser_table *p,
 409                               char *argv[], int *arg_ptr);
 410 struct parser_table
 411 {
 412   enum arg_type type;
 413   char *parser_name;
 414   PARSE_FUNC parser_func;
 415   PRED_FUNC    pred_func;
 416 };
 417
 418 /* parser.c */
 419 const struct parser_table* find_parser PARAMS((char *search_name));
 420 boolean parse_open  PARAMS((const struct parser_table* entry, char *argv[], int *arg_ptr));
 421 boolean parse_close PARAMS((const struct parser_table* entry, char *argv[], int *arg_ptr));
 422 boolean parse_print PARAMS((const struct parser_table*, char *argv[], int *arg_ptr));
 423 void pred_sanity_check PARAMS((const struct predicate *predicates));
 424 void parse_begin_user_args PARAMS((char **args, int argno, const struct predicate *last, const struct predicate *predicates));
 425 void parse_end_user_args PARAMS((char **args, int argno, const struct predicate *last, const struct predicate *predicates));
 426
 427 /* pred.c */
 428 boolean pred_amin PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 429 boolean pred_and PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 430 boolean pred_anewer PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 431 boolean pred_atime PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 432 boolean pred_closeparen PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 433 boolean pred_cmin PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 434 boolean pred_cnewer PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 435 boolean pred_comma PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 436 boolean pred_ctime PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 437 boolean pred_delete PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 438 boolean pred_empty PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 439 boolean pred_exec PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 440 boolean pred_execdir PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 441 boolean pred_false PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 442 boolean pred_fls PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 443 boolean pred_fprint PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 444 boolean pred_fprint0 PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 445 boolean pred_fprintf PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 446 boolean pred_fstype PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 447 boolean pred_gid PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 448 boolean pred_group PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 449 boolean pred_ilname PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 450 boolean pred_iname PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 451 boolean pred_inum PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 452 boolean pred_ipath PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 453 boolean pred_links PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 454 boolean pred_lname PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 455 boolean pred_ls PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 456 boolean pred_mmin PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 457 boolean pred_mtime PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 458 boolean pred_name PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 459 boolean pred_negate PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 460 boolean pred_newer PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 461 boolean pred_nogroup PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 462 boolean pred_nouser PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 463 boolean pred_ok PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 464 boolean pred_okdir PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 465 boolean pred_openparen PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 466 boolean pred_or PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 467 boolean pred_path PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 468 boolean pred_perm PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 469 boolean pred_print PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 470 boolean pred_print0 PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 471 boolean pred_prune PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 472 boolean pred_quit PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 473 boolean pred_regex PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 474 boolean pred_samefile PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 475 boolean pred_size PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 476 boolean pred_true PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 477 boolean pred_type PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 478 boolean pred_uid PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 479 boolean pred_used PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 480 boolean pred_user PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 481 boolean pred_xtype PARAMS((char *pathname, struct stat *stat_buf, struct predicate *pred_ptr));
 482
 483
 484
 485 int launch PARAMS((const struct buildcmd_control *ctl,
 486                    struct buildcmd_state *buildstate));
 487
 488
 489 char *find_pred_name PARAMS((PRED_FUNC pred_func));
 490
 491
 492
 493 #ifdef DEBUG
 494 void print_tree PARAMS((FILE*, struct predicate *node, int indent));
 495 void print_list PARAMS((FILE*, struct predicate *node));
 496 void print_optlist PARAMS((FILE *fp, struct predicate *node));
 497 #endif /* DEBUG */
 498
 499 /* tree.c */
 500 struct predicate *
 501 get_expr PARAMS((struct predicate **input, short int prev_prec));
 502 boolean opt_expr PARAMS((struct predicate **eval_treep));
 503 boolean mark_stat PARAMS((struct predicate *tree));
 504 boolean mark_type PARAMS((struct predicate *tree));
 505
 506 /* util.c */
 507 struct predicate *get_new_pred PARAMS((const struct parser_table *entry));
 508 struct predicate *get_new_pred_chk_op PARAMS((const struct parser_table *entry));
 509 struct predicate *insert_primary PARAMS((const struct parser_table *entry));
 510 struct predicate *insert_primary_withpred PARAMS((const struct parser_table *entry, PRED_FUNC fptr));
 511 void usage PARAMS((char *msg));
 512
 513 extern char *program_name;
 514 extern struct predicate *predicates;
 515 extern struct predicate *last_pred;
 516
 517 struct options
 518 {
 519   /* If true, process directory before contents.  True unless -depth given. */
 520   boolean do_dir_first;
 521
 522   /* If >=0, don't descend more than this many levels of subdirectories. */
 523   int maxdepth;
 524
 525   /* If >=0, don't process files above this level. */
 526   int mindepth;
 527
 528   /* If true, do not assume that files in directories with nlink == 2
 529      are non-directories. */
 530   boolean no_leaf_check;
 531
 532   /* If true, don't cross filesystem boundaries. */
 533   boolean stay_on_filesystem;
 534
 535   /* If true, we ignore the problem where we find that a directory entry
 536    * no longer exists by the time we get around to processing it.
 537    */
 538   boolean ignore_readdir_race;
 539
 540 /* If true, we issue warning messages
 541  */
 542   boolean warnings;
 543   time_t start_time;            /* Time at start of execution.  */
 544
 545   /* Seconds between 00:00 1/1/70 and either one day before now
 546      (the default), or the start of today (if -daystart is given). */
 547   time_t cur_day_start;
 548
 549   /* If true, cur_day_start has been adjusted to the start of the day. */
 550   boolean full_days;
 551
 552   int output_block_size;        /* Output block size.  */
 553
 554   enum SymlinkOption symlink_handling;
 555
 556
 557   /* Pointer to the function used to stat files. */
 558   int (*xstat) (const char *name, struct stat *statbuf);
 559
 560
 561   /* Indicate if we can implement safely_chdir() using the O_NOFOLLOW
 562    * flag to open(2).
 563    */
 564   boolean open_nofollow_available;
 565
 566   /* The variety of regular expression that we support.
 567    * The default is POSIX Basic Regular Expressions, but this
 568    * can be changed with the positional option, -regextype.
 569    */
 570   int regex_options;
 571 };
 572 extern struct options options;
 573
 574
 575 struct state
 576 {
 577   /* Current depth; 0 means current path is a command line arg. */
 578   int curdepth;
 579
 580   /* If true, we have called stat on the current path. */
 581   boolean have_stat;
 582
 583   /* If true, we know the type of the current path. */
 584   boolean have_type;
 585   mode_t type;                  /* this is the actual type */
 586
 587   /* The file being operated on, relative to the current directory.
 588      Used for stat, readlink, remove, and opendir.  */
 589   char *rel_pathname;
 590
 591   /* Length of current path. */
 592   int path_length;
 593
 594   /* If true, don't descend past current directory.
 595      Can be set by -prune, -maxdepth, and -xdev/-mount. */
 596   boolean stop_at_current_level;
 597
 598   /* Status value to return to system. */
 599   int exit_status;
 600 };
 601 extern struct state state;
 602
 603 extern char const *starting_dir;
 604 extern int starting_desc;
 605 #if ! defined HAVE_FCHDIR && ! defined fchdir
 606 # define fchdir(fd) (-1)
 607 #endif
 608
 609 #endif