posix/glob.h

   1 /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _GLOB_H
  19 #define _GLOB_H 1
  20
  21 #include <sys/cdefs.h>
  22
  23 __BEGIN_DECLS
  24
  25 /* We need `size_t' for the following definitions.  */
  26 #ifndef __size_t
  27 typedef __SIZE_TYPE__ __size_t;
  28 # if defined __USE_XOPEN || defined __USE_XOPEN2K8
  29 typedef __SIZE_TYPE__ size_t;
  30 # endif
  31 #else
  32 /* The GNU CC stddef.h version defines __size_t as empty.  We need a real
  33    definition.  */
  34 # undef __size_t
  35 # define __size_t size_t
  36 #endif
  37
  38 /* Bits set in the FLAGS argument to `glob'.  */
  39 #define GLOB_ERR        (1 << 0)/* Return on read errors.  */
  40 #define GLOB_MARK       (1 << 1)/* Append a slash to each name.  */
  41 #define GLOB_NOSORT     (1 << 2)/* Don't sort the names.  */
  42 #define GLOB_DOOFFS     (1 << 3)/* Insert PGLOB->gl_offs NULLs.  */
  43 #define GLOB_NOCHECK    (1 << 4)/* If nothing matches, return the pattern.  */
  44 #define GLOB_APPEND     (1 << 5)/* Append to results of a previous call.  */
  45 #define GLOB_NOESCAPE   (1 << 6)/* Backslashes don't quote metacharacters.  */
  46 #define GLOB_PERIOD     (1 << 7)/* Leading `.' can be matched by metachars.  */
  47
  48 #if !defined __USE_POSIX2 || defined __USE_MISC
  49 # define GLOB_MAGCHAR    (1 << 8)/* Set in gl_flags if any metachars seen.  */
  50 # define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions.  */
  51 # define GLOB_BRACE      (1 << 10)/* Expand "{a,b}" to "a" "b".  */
  52 # define GLOB_NOMAGIC    (1 << 11)/* If no magic chars, return the pattern.  */
  53 # define GLOB_TILDE      (1 << 12)/* Expand ~user and ~ to home directories. */
  54 # define GLOB_ONLYDIR    (1 << 13)/* Match only directories.  */
  55 # define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
  56                                       if the user name is not available.  */
  57 # define __GLOB_FLAGS   (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS  \
  58                          |GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND     \
  59                          |GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE     \
  60                          |GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
  61 #else
  62 # define __GLOB_FLAGS   (GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS  \
  63                          |GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND     \
  64                          |GLOB_PERIOD)
  65 #endif
  66
  67 /* Error returns from `glob'.  */
  68 #define GLOB_NOSPACE    1       /* Ran out of memory.  */
  69 #define GLOB_ABORTED    2       /* Read error.  */
  70 #define GLOB_NOMATCH    3       /* No matches found.  */
  71 #define GLOB_NOSYS      4       /* Not implemented.  */
  72 #ifdef __USE_GNU
  73 /* Previous versions of this file defined GLOB_ABEND instead of
  74    GLOB_ABORTED.  Provide a compatibility definition here.  */
  75 # define GLOB_ABEND GLOB_ABORTED
  76 #endif
  77
  78 /* Structure describing a globbing run.  */
  79 #ifdef __USE_GNU
  80 struct stat;
  81 #endif
  82 typedef struct
  83   {
  84     __size_t gl_pathc;          /* Count of paths matched by the pattern.  */
  85     char **gl_pathv;            /* List of matched pathnames.  */
  86     __size_t gl_offs;           /* Slots to reserve in `gl_pathv'.  */
  87     int gl_flags;               /* Set to FLAGS, maybe | GLOB_MAGCHAR.  */
  88
  89     /* If the GLOB_ALTDIRFUNC flag is set, the following functions
  90        are used instead of the normal file access functions.  */
  91     void (*gl_closedir) (void *);
  92 #ifdef __USE_GNU
  93     struct dirent *(*gl_readdir) (void *);
  94 #else
  95     void *(*gl_readdir) (void *);
  96 #endif
  97     void *(*gl_opendir) (const char *);
  98 #ifdef __USE_GNU
  99     int (*gl_lstat) (const char *__restrict, struct stat *__restrict);
 100     int (*gl_stat) (const char *__restrict, struct stat *__restrict);
 101 #else
 102     int (*gl_lstat) (const char *__restrict, void *__restrict);
 103     int (*gl_stat) (const char *__restrict, void *__restrict);
 104 #endif
 105   } glob_t;
 106
 107 #ifdef __USE_LARGEFILE64
 108 # ifdef __USE_GNU
 109 struct stat64;
 110 # endif
 111 typedef struct
 112   {
 113     __size_t gl_pathc;
 114     char **gl_pathv;
 115     __size_t gl_offs;
 116     int gl_flags;
 117
 118     /* If the GLOB_ALTDIRFUNC flag is set, the following functions
 119        are used instead of the normal file access functions.  */
 120     void (*gl_closedir) (void *);
 121 # ifdef __USE_GNU
 122     struct dirent64 *(*gl_readdir) (void *);
 123 # else
 124     void *(*gl_readdir) (void *);
 125 # endif
 126     void *(*gl_opendir) (const char *);
 127 # ifdef __USE_GNU
 128     int (*gl_lstat) (const char *__restrict, struct stat64 *__restrict);
 129     int (*gl_stat) (const char *__restrict, struct stat64 *__restrict);
 130 # else
 131     int (*gl_lstat) (const char *__restrict, void *__restrict);
 132     int (*gl_stat) (const char *__restrict, void *__restrict);
 133 # endif
 134   } glob64_t;
 135 #endif
 136
 137 /* Do glob searching for PATTERN, placing results in PGLOB.
 138    The bits defined above may be set in FLAGS.
 139    If a directory cannot be opened or read and ERRFUNC is not nil,
 140    it is called with the pathname that caused the error, and the
 141    `errno' value from the failing call; if it returns non-zero
 142    `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
 143    If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
 144    Otherwise, `glob' returns zero.  */
 145 #if !defined __USE_FILE_OFFSET64
 146 extern int glob (const char *__restrict __pattern, int __flags,
 147                  int (*__errfunc) (const char *, int),
 148                  glob_t *__restrict __pglob) __THROWNL;
 149
 150 /* Free storage allocated in PGLOB by a previous `glob' call.  */
 151 extern void globfree (glob_t *__pglob) __THROW;
 152 #else
 153 # ifdef __USE_TIME_BITS64
 154 extern int __REDIRECT_NTHNL (glob, (const char *__restrict __pattern,
 155                                     int __flags,
 156                                     int (*__errfunc) (const char *, int),
 157                                     glob_t *__restrict __pglob),
 158                              __glob64_time64);
 159
 160 extern void __REDIRECT_NTH (globfree, (glob_t *__pglob),
 161                             __globfree64_time64);
 162 # else
 163 extern int __REDIRECT_NTHNL (glob, (const char *__restrict __pattern,
 164                                     int __flags,
 165                                     int (*__errfunc) (const char *, int),
 166                                     glob_t *__restrict __pglob), glob64);
 167
 168 extern void __REDIRECT_NTH (globfree, (glob_t *__pglob), globfree64);
 169 # endif
 170 #endif
 171
 172 #ifdef __USE_LARGEFILE64
 173 # ifdef __USE_TIME_BITS64
 174 extern int __REDIRECT_NTHNL (glob64, (const char *__restrict __pattern,
 175                                       int __flags,
 176                                       int (*__errfunc) (const char *, int),
 177                                       glob64_t *__restrict __pglob),
 178                              __glob64_time64);
 179
 180 extern void __REDIRECT_NTH (globfree64, (glob64_t *__pglob),
 181                             __globfree64_time64);
 182 # else
 183 extern int glob64 (const char *__restrict __pattern, int __flags,
 184                    int (*__errfunc) (const char *, int),
 185                    glob64_t *__restrict __pglob) __THROWNL;
 186
 187 extern void globfree64 (glob64_t *__pglob) __THROW;
 188 # endif
 189 #endif
 190
 191
 192 #ifdef __USE_GNU
 193 /* Return nonzero if PATTERN contains any metacharacters.
 194    Metacharacters can be quoted with backslashes if QUOTE is nonzero.
 195
 196    This function is not part of the interface specified by POSIX.2
 197    but several programs want to use it.  */
 198 extern int glob_pattern_p (const char *__pattern, int __quote) __THROW;
 199 #endif
 200
 201 __END_DECLS
 202
 203 #endif /* glob.h  */