include/ctf-api.h

   1 /* Public API to libctf.
   2    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   3
   4    This file is part of libctf.
   5
   6    libctf is free software; you can redistribute it and/or modify it under
   7    the terms of the GNU General Public License as published by the Free
   8    Software Foundation; either version 3, or (at your option) any later
   9    version.
  10
  11    This program is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14    See the GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; see the file COPYING.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* This header file defines the interfaces available from the CTF debugger
  21    library, libctf.  This API can be used by a debugger to operate on data in
  22    the Compact ANSI-C Type Format (CTF).  */
  23
  24 #ifndef _CTF_API_H
  25 #define _CTF_API_H
  26
  27 #include <sys/types.h>
  28 #include <ctf.h>
  29 #include <zlib.h>
  30
  31 #ifdef  __cplusplus
  32 extern "C"
  33   {
  34 #endif
  35
  36 /* Clients can open one or more CTF containers and obtain a pointer to an
  37    opaque ctf_file_t.  Types are identified by an opaque ctf_id_t token.
  38    They can also open or create read-only archives of CTF containers in a
  39    ctf_archive_t.
  40
  41    These opaque definitions allow libctf to evolve without breaking clients.  */
  42
  43 typedef struct ctf_file ctf_file_t;
  44 typedef struct ctf_archive_internal ctf_archive_t;
  45 typedef unsigned long ctf_id_t;
  46
  47 /* This opaque definition allows libctf to accept BFD data structures without
  48    importing all the BFD noise into users' namespaces.  */
  49
  50 struct bfd;
  51
  52 /* If the debugger needs to provide the CTF library with a set of raw buffers
  53    for use as the CTF data, symbol table, and string table, it can do so by
  54    filling in ctf_sect_t structures and passing them to ctf_bufopen().
  55
  56    The contents of this structure must always be in native endianness (no
  57    byteswapping is performed).  */
  58
  59 typedef struct ctf_sect
  60 {
  61   const char *cts_name;           /* Section name (if any).  */
  62   const void *cts_data;           /* Pointer to section data.  */
  63   size_t cts_size;                /* Size of data in bytes.  */
  64   size_t cts_entsize;             /* Size of each section entry (symtab only).  */
  65 } ctf_sect_t;
  66
  67 /* A minimal symbol extracted from a linker's internal symbol table
  68    representation.  */
  69
  70 typedef struct ctf_link_sym
  71 {
  72   /* The st_name will not be accessed outside the call to
  73      ctf_link_shuffle_syms().  */
  74
  75   const char *st_name;
  76   uint32_t st_shndx;
  77   uint32_t st_type;
  78   uint32_t st_value;
  79 } ctf_link_sym_t;
  80
  81 /* Indication of how to share types when linking.  */
  82
  83 /* Share all types thare are not in conflict.  The default.  */
  84 #define CTF_LINK_SHARE_UNCONFLICTED 0x0
  85
  86 /* Share only types that are used by multiple inputs.  Not implemented yet.  */
  87 #define CTF_LINK_SHARE_DUPLICATED 0x1
  88
  89 /* Symbolic names for CTF sections.  */
  90
  91 typedef enum ctf_sect_names
  92   {
  93    CTF_SECT_HEADER,
  94    CTF_SECT_LABEL,
  95    CTF_SECT_OBJT,
  96    CTF_SECT_FUNC,
  97    CTF_SECT_VAR,
  98    CTF_SECT_TYPE,
  99    CTF_SECT_STR
 100   } ctf_sect_names_t;
 101
 102 /* Encoding information for integers, floating-point values, and certain other
 103    intrinsics can be obtained by calling ctf_type_encoding(), below.  The flags
 104    field will contain values appropriate for the type defined in <ctf.h>.  */
 105
 106 typedef struct ctf_encoding
 107 {
 108   uint32_t cte_format;           /* Data format (CTF_INT_* or CTF_FP_* flags).  */
 109   uint32_t cte_offset;           /* Offset of value in bits.  */
 110   uint32_t cte_bits;             /* Size of storage in bits.  */
 111 } ctf_encoding_t;
 112
 113 typedef struct ctf_membinfo
 114 {
 115   ctf_id_t ctm_type;            /* Type of struct or union member.  */
 116   unsigned long ctm_offset;     /* Offset of member in bits.  */
 117 } ctf_membinfo_t;
 118
 119 typedef struct ctf_arinfo
 120 {
 121   ctf_id_t ctr_contents;        /* Type of array contents.  */
 122   ctf_id_t ctr_index;           /* Type of array index.  */
 123   uint32_t ctr_nelems;          /* Number of elements.  */
 124 } ctf_arinfo_t;
 125
 126 typedef struct ctf_funcinfo
 127 {
 128   ctf_id_t ctc_return;          /* Function return type.  */
 129   uint32_t ctc_argc;            /* Number of typed arguments to function.  */
 130   uint32_t ctc_flags;           /* Function attributes (see below).  */
 131 } ctf_funcinfo_t;
 132
 133 typedef struct ctf_lblinfo
 134 {
 135   ctf_id_t ctb_type;            /* Last type associated with the label.  */
 136 } ctf_lblinfo_t;
 137
 138 typedef struct ctf_snapshot_id
 139 {
 140   unsigned long dtd_id;         /* Highest DTD ID at time of snapshot.  */
 141   unsigned long snapshot_id;    /* Snapshot id at time of snapshot.  */
 142 } ctf_snapshot_id_t;
 143
 144 #define CTF_FUNC_VARARG 0x1     /* Function arguments end with varargs.  */
 145
 146 /* Functions that return a ctf_id_t use the following value to indicate failure.
 147    ctf_errno() can be used to obtain an error code.  Functions that return
 148    a straight integral -1 also use ctf_errno().  */
 149 #define CTF_ERR ((ctf_id_t) -1L)
 150
 151 #define ECTF_BASE       1000    /* Base value for libctf errnos.  */
 152
 153
 154 enum
 155   {
 156    ECTF_FMT = ECTF_BASE,        /* File is not in CTF or ELF format.  */
 157    ECTF_BFDERR,                 /* BFD error.  */
 158    ECTF_CTFVERS,                /* CTF version is more recent than libctf.  */
 159    ECTF_BFD_AMBIGUOUS,          /* Ambiguous BFD target.  */
 160    ECTF_SYMTAB,                 /* Symbol table uses invalid entry size.  */
 161    ECTF_SYMBAD,                 /* Symbol table data buffer invalid.  */
 162    ECTF_STRBAD,                 /* String table data buffer invalid.  */
 163    ECTF_CORRUPT,                /* File data corruption detected.  */
 164    ECTF_NOCTFDATA,              /* ELF file does not contain CTF data.  */
 165    ECTF_NOCTFBUF,               /* Buffer does not contain CTF data.  */
 166    ECTF_NOSYMTAB,               /* Symbol table data is not available.  */
 167    ECTF_NOPARENT,               /* Parent CTF container is not available.  */
 168    ECTF_DMODEL,                 /* Data model mismatch.  */
 169    ECTF_LINKADDEDLATE,          /* File added to link too late.  */
 170    ECTF_ZALLOC,                 /* Failed to allocate (de)compression buffer.  */
 171    ECTF_DECOMPRESS,             /* Failed to decompress CTF data.  */
 172    ECTF_STRTAB,                 /* String table for this string is missing.  */
 173    ECTF_BADNAME,                /* String offset is corrupt w.r.t. strtab.  */
 174    ECTF_BADID,                  /* Invalid type ID number.  */
 175    ECTF_NOTSOU,                 /* Type is not a struct or union.  */
 176    ECTF_NOTENUM,                /* Type is not an enum.  */
 177    ECTF_NOTSUE,                 /* Type is not a struct, union, or enum.  */
 178    ECTF_NOTINTFP,               /* Type is not an integer, float, or enum.  */
 179    ECTF_NOTARRAY,               /* Type is not an array.  */
 180    ECTF_NOTREF,                 /* Type does not reference another type.  */
 181    ECTF_NAMELEN,                /* Buffer is too small to hold type name.  */
 182    ECTF_NOTYPE,                 /* No type found corresponding to name.  */
 183    ECTF_SYNTAX,                 /* Syntax error in type name.  */
 184    ECTF_NOTFUNC,                /* Symbol entry or type is not a function.  */
 185    ECTF_NOFUNCDAT,              /* No func info available for function.  */
 186    ECTF_NOTDATA,                /* Symtab entry does not refer to a data obj.  */
 187    ECTF_NOTYPEDAT,              /* No type info available for object.  */
 188    ECTF_NOLABEL,                /* No label found corresponding to name.  */
 189    ECTF_NOLABELDATA,            /* File does not contain any labels.  */
 190    ECTF_NOTSUP,                 /* Feature not supported.  */
 191    ECTF_NOENUMNAM,              /* Enum element name not found.  */
 192    ECTF_NOMEMBNAM,              /* Member name not found.  */
 193    ECTF_RDONLY,                 /* CTF container is read-only.  */
 194    ECTF_DTFULL,                 /* CTF type is full (no more members allowed).  */
 195    ECTF_FULL,                   /* CTF container is full.  */
 196    ECTF_DUPLICATE,              /* Duplicate member or variable name.  */
 197    ECTF_CONFLICT,               /* Conflicting type definition present.  */
 198    ECTF_OVERROLLBACK,           /* Attempt to roll back past a ctf_update.  */
 199    ECTF_COMPRESS,               /* Failed to compress CTF data.  */
 200    ECTF_ARCREATE,               /* Error creating CTF archive.  */
 201    ECTF_ARNNAME,                /* Name not found in CTF archive.  */
 202    ECTF_SLICEOVERFLOW,          /* Overflow of type bitness or offset in slice.  */
 203    ECTF_DUMPSECTUNKNOWN,        /* Unknown section number in dump.  */
 204    ECTF_DUMPSECTCHANGED,        /* Section changed in middle of dump.  */
 205    ECTF_NOTYET,                 /* Feature not yet implemented.  */
 206    ECTF_INTERNAL,               /* Internal error in link.  */
 207    ECTF_NONREPRESENTABLE        /* Type not representable in CTF.  */
 208   };
 209
 210 /* The CTF data model is inferred to be the caller's data model or the data
 211    model of the given object, unless ctf_setmodel() is explicitly called.  */
 212 #define CTF_MODEL_ILP32 1       /* Object data model is ILP32.  */
 213 #define CTF_MODEL_LP64  2       /* Object data model is LP64.  */
 214 #ifdef _LP64
 215 # define CTF_MODEL_NATIVE CTF_MODEL_LP64
 216 #else
 217 # define CTF_MODEL_NATIVE CTF_MODEL_ILP32
 218 #endif
 219
 220 /* Dynamic CTF containers can be created using ctf_create().  The ctf_add_*
 221    routines can be used to add new definitions to the dynamic container.
 222    New types are labeled as root or non-root to determine whether they are
 223    visible at the top-level program scope when subsequently doing a lookup.  */
 224
 225 #define CTF_ADD_NONROOT 0       /* Type only visible in nested scope.  */
 226 #define CTF_ADD_ROOT    1       /* Type visible at top-level scope.  */
 227
 228 /* These typedefs are used to define the signature for callback functions
 229    that can be used with the iteration and visit functions below.  */
 230
 231 typedef int ctf_visit_f (const char *name, ctf_id_t type, unsigned long offset,
 232                          int depth, void *arg);
 233 typedef int ctf_member_f (const char *name, ctf_id_t membtype,
 234                           unsigned long offset, void *arg);
 235 typedef int ctf_enum_f (const char *name, int val, void *arg);
 236 typedef int ctf_variable_f (const char *name, ctf_id_t type, void *arg);
 237 typedef int ctf_type_f (ctf_id_t type, void *arg);
 238 typedef int ctf_type_all_f (ctf_id_t type, int flag, void *arg);
 239 typedef int ctf_label_f (const char *name, const ctf_lblinfo_t *info,
 240                          void *arg);
 241 typedef int ctf_archive_member_f (ctf_file_t *fp, const char *name, void *arg);
 242 typedef int ctf_archive_raw_member_f (const char *name, const void *content,
 243                                       size_t len, void *arg);
 244 typedef char *ctf_dump_decorate_f (ctf_sect_names_t sect,
 245                                    char *line, void *arg);
 246
 247 typedef struct ctf_dump_state ctf_dump_state_t;
 248
 249 /* Opening.  These mostly return an abstraction over both CTF files and CTF
 250    archives: so they can be used to open both.  CTF files will appear to be an
 251    archive with one member named '.ctf'.  The low-level functions
 252    ctf_simple_open() and ctf_bufopen() return ctf_file_t's directly, and cannot
 253    be used on CTF archives.  */
 254
 255 extern ctf_archive_t *ctf_bfdopen (struct bfd *, int *);
 256 extern ctf_archive_t *ctf_bfdopen_ctfsect (struct bfd *, const ctf_sect_t *,
 257                                            int *);
 258 extern ctf_archive_t *ctf_fdopen (int fd, const char *filename,
 259                                   const char *target, int *errp);
 260 extern ctf_archive_t *ctf_open (const char *filename,
 261                                 const char *target, int *errp);
 262 extern void ctf_close (ctf_archive_t *);
 263 extern ctf_sect_t ctf_getdatasect (const ctf_file_t *);
 264 extern ctf_archive_t *ctf_get_arc (const ctf_file_t *);
 265 extern ctf_archive_t *ctf_arc_open (const char *, int *);
 266 extern void ctf_arc_close (ctf_archive_t *);
 267 extern ctf_file_t *ctf_arc_open_by_name (const ctf_archive_t *,
 268                                          const char *, int *);
 269 extern ctf_file_t *ctf_arc_open_by_name_sections (const ctf_archive_t *,
 270                                                   const ctf_sect_t *,
 271                                                   const ctf_sect_t *,
 272                                                   const char *, int *);
 273
 274 /* The next functions return or close real CTF files, or write out CTF archives,
 275    not opaque containers around either.  */
 276
 277 extern ctf_file_t *ctf_simple_open (const char *, size_t, const char *, size_t,
 278                                    size_t, const char *, size_t, int *);
 279 extern ctf_file_t *ctf_bufopen (const ctf_sect_t *, const ctf_sect_t *,
 280                                 const ctf_sect_t *, int *);
 281 extern void ctf_file_close (ctf_file_t *);
 282
 283 extern int ctf_arc_write (const char *, ctf_file_t **, size_t,
 284                           const char **, size_t);
 285 extern int ctf_arc_write_fd (int, ctf_file_t **, size_t, const char **,
 286                              size_t);
 287
 288 extern const char *ctf_cuname (ctf_file_t *);
 289 extern int ctf_cuname_set (ctf_file_t *, const char *);
 290 extern ctf_file_t *ctf_parent_file (ctf_file_t *);
 291 extern const char *ctf_parent_name (ctf_file_t *);
 292 extern int ctf_parent_name_set (ctf_file_t *, const char *);
 293 extern int ctf_type_isparent (ctf_file_t *, ctf_id_t);
 294 extern int ctf_type_ischild (ctf_file_t *, ctf_id_t);
 295
 296 extern int ctf_import (ctf_file_t *, ctf_file_t *);
 297 extern int ctf_setmodel (ctf_file_t *, int);
 298 extern int ctf_getmodel (ctf_file_t *);
 299
 300 extern void ctf_setspecific (ctf_file_t *, void *);
 301 extern void *ctf_getspecific (ctf_file_t *);
 302
 303 extern int ctf_errno (ctf_file_t *);
 304 extern const char *ctf_errmsg (int);
 305 extern int ctf_version (int);
 306
 307 extern int ctf_func_info (ctf_file_t *, unsigned long, ctf_funcinfo_t *);
 308 extern int ctf_func_args (ctf_file_t *, unsigned long, uint32_t, ctf_id_t *);
 309 extern int ctf_func_type_info (ctf_file_t *, ctf_id_t, ctf_funcinfo_t *);
 310 extern int ctf_func_type_args (ctf_file_t *, ctf_id_t, uint32_t, ctf_id_t *);
 311
 312 extern ctf_id_t ctf_lookup_by_name (ctf_file_t *, const char *);
 313 extern ctf_id_t ctf_lookup_by_symbol (ctf_file_t *, unsigned long);
 314 extern ctf_id_t ctf_lookup_variable (ctf_file_t *, const char *);
 315
 316 extern ctf_id_t ctf_type_resolve (ctf_file_t *, ctf_id_t);
 317 extern char *ctf_type_aname (ctf_file_t *, ctf_id_t);
 318 extern char *ctf_type_aname_raw (ctf_file_t *, ctf_id_t);
 319 extern ssize_t ctf_type_lname (ctf_file_t *, ctf_id_t, char *, size_t);
 320 extern char *ctf_type_name (ctf_file_t *, ctf_id_t, char *, size_t);
 321 extern ssize_t ctf_type_size (ctf_file_t *, ctf_id_t);
 322 extern ssize_t ctf_type_align (ctf_file_t *, ctf_id_t);
 323 extern int ctf_type_kind (ctf_file_t *, ctf_id_t);
 324 extern ctf_id_t ctf_type_reference (ctf_file_t *, ctf_id_t);
 325 extern ctf_id_t ctf_type_pointer (ctf_file_t *, ctf_id_t);
 326 extern int ctf_type_encoding (ctf_file_t *, ctf_id_t, ctf_encoding_t *);
 327 extern int ctf_type_visit (ctf_file_t *, ctf_id_t, ctf_visit_f *, void *);
 328 extern int ctf_type_cmp (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
 329 extern int ctf_type_compat (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
 330
 331 extern int ctf_member_info (ctf_file_t *, ctf_id_t, const char *,
 332                             ctf_membinfo_t *);
 333 extern int ctf_array_info (ctf_file_t *, ctf_id_t, ctf_arinfo_t *);
 334
 335 extern const char *ctf_enum_name (ctf_file_t *, ctf_id_t, int);
 336 extern int ctf_enum_value (ctf_file_t *, ctf_id_t, const char *, int *);
 337
 338 extern void ctf_label_set (ctf_file_t *, const char *);
 339 extern const char *ctf_label_get (ctf_file_t *);
 340
 341 extern const char *ctf_label_topmost (ctf_file_t *);
 342 extern int ctf_label_info (ctf_file_t *, const char *, ctf_lblinfo_t *);
 343
 344 extern int ctf_member_iter (ctf_file_t *, ctf_id_t, ctf_member_f *, void *);
 345 extern int ctf_enum_iter (ctf_file_t *, ctf_id_t, ctf_enum_f *, void *);
 346 extern int ctf_type_iter (ctf_file_t *, ctf_type_f *, void *);
 347 extern int ctf_type_iter_all (ctf_file_t *, ctf_type_all_f *, void *);
 348 extern int ctf_label_iter (ctf_file_t *, ctf_label_f *, void *);
 349 extern int ctf_variable_iter (ctf_file_t *, ctf_variable_f *, void *);
 350 extern int ctf_archive_iter (const ctf_archive_t *, ctf_archive_member_f *,
 351                              void *);
 352 /* This function alone does not currently operate on CTF files masquerading
 353    as archives, and returns -EINVAL: the raw data is no longer available.  It is
 354    expected to be used only by archiving tools, in any case, which have no need
 355    to deal with non-archives at all.  */
 356 extern int ctf_archive_raw_iter (const ctf_archive_t *,
 357                                  ctf_archive_raw_member_f *, void *);
 358 extern char *ctf_dump (ctf_file_t *, ctf_dump_state_t **state,
 359                        ctf_sect_names_t sect, ctf_dump_decorate_f *,
 360                        void *arg);
 361
 362 extern ctf_id_t ctf_add_array (ctf_file_t *, uint32_t,
 363                                const ctf_arinfo_t *);
 364 extern ctf_id_t ctf_add_const (ctf_file_t *, uint32_t, ctf_id_t);
 365 extern ctf_id_t ctf_add_enum_encoded (ctf_file_t *, uint32_t, const char *,
 366                                       const ctf_encoding_t *);
 367 extern ctf_id_t ctf_add_enum (ctf_file_t *, uint32_t, const char *);
 368 extern ctf_id_t ctf_add_float (ctf_file_t *, uint32_t,
 369                                const char *, const ctf_encoding_t *);
 370 extern ctf_id_t ctf_add_forward (ctf_file_t *, uint32_t, const char *,
 371                                  uint32_t);
 372 extern ctf_id_t ctf_add_function (ctf_file_t *, uint32_t,
 373                                   const ctf_funcinfo_t *, const ctf_id_t *);
 374 extern ctf_id_t ctf_add_integer (ctf_file_t *, uint32_t, const char *,
 375                                  const ctf_encoding_t *);
 376 extern ctf_id_t ctf_add_slice (ctf_file_t *, uint32_t, ctf_id_t, const ctf_encoding_t *);
 377 extern ctf_id_t ctf_add_pointer (ctf_file_t *, uint32_t, ctf_id_t);
 378 extern ctf_id_t ctf_add_type (ctf_file_t *, ctf_file_t *, ctf_id_t);
 379 extern ctf_id_t ctf_add_typedef (ctf_file_t *, uint32_t, const char *,
 380                                  ctf_id_t);
 381 extern ctf_id_t ctf_add_restrict (ctf_file_t *, uint32_t, ctf_id_t);
 382 extern ctf_id_t ctf_add_struct (ctf_file_t *, uint32_t, const char *);
 383 extern ctf_id_t ctf_add_union (ctf_file_t *, uint32_t, const char *);
 384 extern ctf_id_t ctf_add_struct_sized (ctf_file_t *, uint32_t, const char *,
 385                                       size_t);
 386 extern ctf_id_t ctf_add_union_sized (ctf_file_t *, uint32_t, const char *,
 387                                      size_t);
 388 extern ctf_id_t ctf_add_volatile (ctf_file_t *, uint32_t, ctf_id_t);
 389
 390 extern int ctf_add_enumerator (ctf_file_t *, ctf_id_t, const char *, int);
 391 extern int ctf_add_member (ctf_file_t *, ctf_id_t, const char *, ctf_id_t);
 392 extern int ctf_add_member_offset (ctf_file_t *, ctf_id_t, const char *,
 393                                   ctf_id_t, unsigned long);
 394 extern int ctf_add_member_encoded (ctf_file_t *, ctf_id_t, const char *,
 395                                    ctf_id_t, unsigned long,
 396                                    const ctf_encoding_t);
 397
 398 extern int ctf_add_variable (ctf_file_t *, const char *, ctf_id_t);
 399
 400 extern int ctf_set_array (ctf_file_t *, ctf_id_t, const ctf_arinfo_t *);
 401
 402 extern ctf_file_t *ctf_create (int *);
 403 extern int ctf_update (ctf_file_t *);
 404 extern ctf_snapshot_id_t ctf_snapshot (ctf_file_t *);
 405 extern int ctf_rollback (ctf_file_t *, ctf_snapshot_id_t);
 406 extern int ctf_discard (ctf_file_t *);
 407 extern int ctf_write (ctf_file_t *, int);
 408 extern int ctf_gzwrite (ctf_file_t *fp, gzFile fd);
 409 extern int ctf_compress_write (ctf_file_t * fp, int fd);
 410 extern unsigned char *ctf_write_mem (ctf_file_t *, size_t *, size_t threshold);
 411
 412 /* The ctf_link interfaces are not stable yet.  No guarantees!  */
 413
 414 extern int ctf_link_add_ctf (ctf_file_t *, ctf_archive_t *, const char *);
 415 extern int ctf_link (ctf_file_t *, int share_mode);
 416 typedef const char *ctf_link_strtab_string_f (uint32_t *offset, void *arg);
 417 extern int ctf_link_add_strtab (ctf_file_t *, ctf_link_strtab_string_f *,
 418                                 void *);
 419 typedef ctf_link_sym_t *ctf_link_iter_symbol_f (ctf_link_sym_t *dest,
 420                                                 void *arg);
 421 extern int ctf_link_shuffle_syms (ctf_file_t *, ctf_link_iter_symbol_f *,
 422                                   void *);
 423 extern unsigned char *ctf_link_write (ctf_file_t *, size_t *size,
 424                                       size_t threshold);
 425
 426 /* Specialist linker functions.  These functions are not used by ld, but can be
 427    used by other prgorams making use of the linker machinery for other purposes
 428    to customize its output.  */
 429 extern int ctf_link_add_cu_mapping (ctf_file_t *, const char *from,
 430                                     const char *to);
 431 typedef char *ctf_link_memb_name_changer_f (ctf_file_t *,
 432                                             const char *, void *);
 433 extern void ctf_link_set_memb_name_changer
 434   (ctf_file_t *, ctf_link_memb_name_changer_f *, void *);
 435
 436 extern void ctf_setdebug (int debug);
 437 extern int ctf_getdebug (void);
 438
 439 #ifdef  __cplusplus
 440 }
 441 #endif
 442
 443 #endif                          /* _CTF_API_H */