libctf/ctf-impl.h

   1 /* Implementation header.
   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 #ifndef _CTF_IMPL_H
  21 #define _CTF_IMPL_H
  22
  23 #include "config.h"
  24 #include <errno.h>
  25 #include <sys/param.h>
  26 #include "ctf-decls.h"
  27 #include <ctf-api.h>
  28 #include <sys/types.h>
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #include <stdint.h>
  33 #include <limits.h>
  34 #include <ctype.h>
  35 #include <elf.h>
  36 #include <bfd.h>
  37 #include "hashtab.h"
  38
  39 #ifdef  __cplusplus
  40 extern "C"
  41 {
  42 #endif
  43
  44 /* Compiler attributes.  */
  45
  46 #if defined (__GNUC__)
  47
  48 /* GCC.  We assume that all compilers claiming to be GCC support sufficiently
  49    many GCC attributes that the code below works.  If some non-GCC compilers
  50    masquerading as GCC in fact do not implement these attributes, version checks
  51    may be required.  */
  52
  53 /* We use the _libctf_*_ pattern to avoid clashes with any future attribute
  54    macros glibc may introduce, which have names of the pattern
  55    __attribute_blah__.  */
  56
  57 #define _libctf_printflike_(string_index,first_to_check) \
  58     __attribute__ ((__format__ (__printf__, (string_index), (first_to_check))))
  59 #define _libctf_unlikely_(x) __builtin_expect ((x), 0)
  60 #define _libctf_unused_ __attribute__ ((__unused__))
  61 #define _libctf_malloc_ __attribute__((__malloc__))
  62
  63 #else
  64
  65 #define _libctf_printflike_(string_index,first_to_check)
  66 #define _libctf_unlikely_(x) (x)
  67 #define _libctf_unused_
  68 #define _libctf_malloc_
  69 #define __extension__
  70
  71 #endif
  72
  73 #define ctf_assert(fp, expr)                                            \
  74   _libctf_unlikely_ (ctf_assert_internal (fp, __FILE__, __LINE__,       \
  75                                           #expr, !!(expr)))
  76
  77 /* libctf in-memory state.  */
  78
  79 typedef struct ctf_fixed_hash ctf_hash_t; /* Private to ctf-hash.c.  */
  80 typedef struct ctf_dynhash ctf_dynhash_t; /* Private to ctf-hash.c.  */
  81 typedef struct ctf_dynset ctf_dynset_t;   /* Private to ctf-hash.c.  */
  82
  83 typedef struct ctf_strs
  84 {
  85   const char *cts_strs;         /* Base address of string table.  */
  86   size_t cts_len;               /* Size of string table in bytes.  */
  87 } ctf_strs_t;
  88
  89 typedef struct ctf_strs_writable
  90 {
  91   char *cts_strs;               /* Base address of string table.  */
  92   size_t cts_len;               /* Size of string table in bytes.  */
  93 } ctf_strs_writable_t;
  94
  95 typedef struct ctf_dmodel
  96 {
  97   const char *ctd_name;         /* Data model name.  */
  98   int ctd_code;                 /* Data model code.  */
  99   size_t ctd_pointer;           /* Size of void * in bytes.  */
 100   size_t ctd_char;              /* Size of char in bytes.  */
 101   size_t ctd_short;             /* Size of short in bytes.  */
 102   size_t ctd_int;               /* Size of int in bytes.  */
 103   size_t ctd_long;              /* Size of long in bytes.  */
 104 } ctf_dmodel_t;
 105
 106 typedef struct ctf_names
 107 {
 108   ctf_hash_t *ctn_readonly;     /* Hash table when readonly.  */
 109   ctf_dynhash_t *ctn_writable;  /* Hash table when writable.  */
 110 } ctf_names_t;
 111
 112 typedef struct ctf_lookup
 113 {
 114   const char *ctl_prefix;       /* String prefix for this lookup.  */
 115   size_t ctl_len;               /* Length of prefix string in bytes.  */
 116   ctf_names_t *ctl_hash;        /* Pointer to hash table for lookup.  */
 117 } ctf_lookup_t;
 118
 119 typedef struct ctf_fileops
 120 {
 121   uint32_t (*ctfo_get_kind) (uint32_t);
 122   uint32_t (*ctfo_get_root) (uint32_t);
 123   uint32_t (*ctfo_get_vlen) (uint32_t);
 124   ssize_t (*ctfo_get_ctt_size) (const ctf_file_t *, const ctf_type_t *,
 125                                 ssize_t *, ssize_t *);
 126   ssize_t (*ctfo_get_vbytes) (unsigned short, ssize_t, size_t);
 127 } ctf_fileops_t;
 128
 129 typedef struct ctf_list
 130 {
 131   struct ctf_list *l_prev;      /* Previous pointer or tail pointer.  */
 132   struct ctf_list *l_next;      /* Next pointer or head pointer.  */
 133 } ctf_list_t;
 134
 135 typedef enum
 136   {
 137    CTF_PREC_BASE,
 138    CTF_PREC_POINTER,
 139    CTF_PREC_ARRAY,
 140    CTF_PREC_FUNCTION,
 141    CTF_PREC_MAX
 142   } ctf_decl_prec_t;
 143
 144 typedef struct ctf_decl_node
 145 {
 146   ctf_list_t cd_list;           /* Linked list pointers.  */
 147   ctf_id_t cd_type;             /* Type identifier.  */
 148   uint32_t cd_kind;             /* Type kind.  */
 149   uint32_t cd_n;                /* Type dimension if array.  */
 150 } ctf_decl_node_t;
 151
 152 typedef struct ctf_decl
 153 {
 154   ctf_list_t cd_nodes[CTF_PREC_MAX]; /* Declaration node stacks.  */
 155   int cd_order[CTF_PREC_MAX];        /* Storage order of decls.  */
 156   ctf_decl_prec_t cd_qualp;          /* Qualifier precision.  */
 157   ctf_decl_prec_t cd_ordp;           /* Ordered precision.  */
 158   char *cd_buf;                      /* Buffer for output.  */
 159   int cd_err;                        /* Saved error value.  */
 160   int cd_enomem;                     /* Nonzero if OOM during printing.  */
 161 } ctf_decl_t;
 162
 163 typedef struct ctf_dmdef
 164 {
 165   ctf_list_t dmd_list;          /* List forward/back pointers.  */
 166   char *dmd_name;               /* Name of this member.  */
 167   ctf_id_t dmd_type;            /* Type of this member (for sou).  */
 168   unsigned long dmd_offset;     /* Offset of this member in bits (for sou).  */
 169   int dmd_value;                /* Value of this member (for enum).  */
 170 } ctf_dmdef_t;
 171
 172 typedef struct ctf_dtdef
 173 {
 174   ctf_list_t dtd_list;          /* List forward/back pointers.  */
 175   ctf_id_t dtd_type;            /* Type identifier for this definition.  */
 176   ctf_type_t dtd_data;          /* Type node, including name.  */
 177   union
 178   {
 179     ctf_list_t dtu_members;     /* struct, union, or enum */
 180     ctf_arinfo_t dtu_arr;       /* array */
 181     ctf_encoding_t dtu_enc;     /* integer or float */
 182     uint32_t *dtu_argv;         /* function */
 183     ctf_slice_t dtu_slice;      /* slice */
 184   } dtd_u;
 185 } ctf_dtdef_t;
 186
 187 typedef struct ctf_dvdef
 188 {
 189   ctf_list_t dvd_list;          /* List forward/back pointers.  */
 190   char *dvd_name;               /* Name associated with variable.  */
 191   ctf_id_t dvd_type;            /* Type of variable.  */
 192   unsigned long dvd_snapshots;  /* Snapshot count when inserted.  */
 193 } ctf_dvdef_t;
 194
 195 typedef struct ctf_bundle
 196 {
 197   ctf_file_t *ctb_file;         /* CTF container handle.  */
 198   ctf_id_t ctb_type;            /* CTF type identifier.  */
 199   ctf_dtdef_t *ctb_dtd;         /* CTF dynamic type definition (if any).  */
 200 } ctf_bundle_t;
 201
 202 typedef struct ctf_err_warning
 203 {
 204   ctf_list_t cew_list;          /* List forward/back pointers.  */
 205   int cew_is_warning;           /* 1 if warning, 0 if error.  */
 206   char *cew_text;               /* Error/warning text.  */
 207 } ctf_err_warning_t;
 208
 209 /* Atoms associate strings with a list of the CTF items that reference that
 210    string, so that ctf_update() can instantiate all the strings using the
 211    ctf_str_atoms and then reassociate them with the real string later.
 212
 213    Strings can be interned into ctf_str_atom without having refs associated
 214    with them, for values that are returned to callers, etc.  Items are only
 215    removed from this table on ctf_close(), but on every ctf_update(), all the
 216    csa_refs in all entries are purged.  */
 217
 218 typedef struct ctf_str_atom
 219 {
 220   const char *csa_str;          /* Backpointer to string (hash key).  */
 221   ctf_list_t csa_refs;          /* This string's refs.  */
 222   uint32_t csa_offset;          /* Strtab offset, if any.  */
 223   uint32_t csa_external_offset; /* External strtab offset, if any.  */
 224   unsigned long csa_snapshot_id; /* Snapshot ID at time of creation.  */
 225 } ctf_str_atom_t;
 226
 227 /* The refs of a single string in the atoms table.  */
 228
 229 typedef struct ctf_str_atom_ref
 230 {
 231   ctf_list_t caf_list;          /* List forward/back pointers.  */
 232   uint32_t *caf_ref;            /* A single ref to this string.  */
 233 } ctf_str_atom_ref_t;
 234
 235 /* The structure used as the key in a ctf_link_type_mapping, which lets the
 236    linker machinery determine which type IDs on the input side of a link map to
 237    which types on the output side.  (The value is a ctf_id_t: another
 238    index, not a type.)  */
 239
 240 typedef struct ctf_link_type_mapping_key
 241 {
 242   ctf_file_t *cltm_fp;
 243   ctf_id_t cltm_idx;
 244 } ctf_link_type_mapping_key_t;
 245
 246 /* The ctf_file is the structure used to represent a CTF container to library
 247    clients, who see it only as an opaque pointer.  Modifications can therefore
 248    be made freely to this structure without regard to client versioning.  The
 249    ctf_file_t typedef appears in <ctf-api.h> and declares a forward tag.
 250
 251    NOTE: ctf_update() requires that everything inside of ctf_file either be an
 252    immediate value, a pointer to dynamically allocated data *outside* of the
 253    ctf_file itself, or a pointer to statically allocated data.  If you add a
 254    pointer to ctf_file that points to something within the ctf_file itself,
 255    you must make corresponding changes to ctf_update().  */
 256
 257 struct ctf_file
 258 {
 259   const ctf_fileops_t *ctf_fileops; /* Version-specific file operations.  */
 260   struct ctf_header *ctf_header;    /* The header from this CTF file.  */
 261   unsigned char ctf_openflags;      /* Flags the file had when opened.  */
 262   ctf_sect_t ctf_data;              /* CTF data from object file.  */
 263   ctf_sect_t ctf_symtab;            /* Symbol table from object file.  */
 264   ctf_sect_t ctf_strtab;            /* String table from object file.  */
 265   ctf_dynhash_t *ctf_prov_strtab;   /* Maps provisional-strtab offsets
 266                                        to names.  */
 267   ctf_dynhash_t *ctf_syn_ext_strtab; /* Maps ext-strtab offsets to names.  */
 268   void *ctf_data_mmapped;           /* CTF data we mmapped, to free later.  */
 269   size_t ctf_data_mmapped_len;      /* Length of CTF data we mmapped.  */
 270   ctf_names_t ctf_structs;          /* Hash table of struct types.  */
 271   ctf_names_t ctf_unions;           /* Hash table of union types.  */
 272   ctf_names_t ctf_enums;            /* Hash table of enum types.  */
 273   ctf_names_t ctf_names;            /* Hash table of remaining type names.  */
 274   ctf_lookup_t ctf_lookups[5];      /* Pointers to nametabs for name lookup.  */
 275   ctf_strs_t ctf_str[2];            /* Array of string table base and bounds.  */
 276   ctf_dynhash_t *ctf_str_atoms;   /* Hash table of ctf_str_atoms_t.  */
 277   uint64_t ctf_str_num_refs;      /* Number of refs to cts_str_atoms.  */
 278   uint32_t ctf_str_prov_offset;   /* Latest provisional offset assigned so far.  */
 279   unsigned char *ctf_base;        /* CTF file pointer.  */
 280   unsigned char *ctf_dynbase;     /* Freeable CTF file pointer. */
 281   unsigned char *ctf_buf;         /* Uncompressed CTF data buffer.  */
 282   size_t ctf_size;                /* Size of CTF header + uncompressed data.  */
 283   uint32_t *ctf_sxlate;           /* Translation table for symtab entries.  */
 284   unsigned long ctf_nsyms;        /* Number of entries in symtab xlate table.  */
 285   uint32_t *ctf_txlate;           /* Translation table for type IDs.  */
 286   uint32_t *ctf_ptrtab;           /* Translation table for pointer-to lookups.  */
 287   size_t ctf_ptrtab_len;          /* Num types storable in ptrtab currently.  */
 288   struct ctf_varent *ctf_vars;    /* Sorted variable->type mapping.  */
 289   unsigned long ctf_nvars;        /* Number of variables in ctf_vars.  */
 290   unsigned long ctf_typemax;      /* Maximum valid type ID number.  */
 291   const ctf_dmodel_t *ctf_dmodel; /* Data model pointer (see above).  */
 292   const char *ctf_cuname;         /* Compilation unit name (if any).  */
 293   char *ctf_dyncuname;            /* Dynamically allocated name of CU.  */
 294   struct ctf_file *ctf_parent;    /* Parent CTF container (if any).  */
 295   const char *ctf_parlabel;       /* Label in parent container (if any).  */
 296   const char *ctf_parname;        /* Basename of parent (if any).  */
 297   char *ctf_dynparname;           /* Dynamically allocated name of parent.  */
 298   uint32_t ctf_parmax;            /* Highest type ID of a parent type.  */
 299   uint32_t ctf_refcnt;            /* Reference count (for parent links).  */
 300   uint32_t ctf_flags;             /* Libctf flags (see below).  */
 301   int ctf_errno;                  /* Error code for most recent error.  */
 302   int ctf_version;                /* CTF data version.  */
 303   ctf_dynhash_t *ctf_dthash;      /* Hash of dynamic type definitions.  */
 304   ctf_list_t ctf_dtdefs;          /* List of dynamic type definitions.  */
 305   ctf_dynhash_t *ctf_dvhash;      /* Hash of dynamic variable mappings.  */
 306   ctf_list_t ctf_dvdefs;          /* List of dynamic variable definitions.  */
 307   unsigned long ctf_dtoldid;      /* Oldest id that has been committed.  */
 308   unsigned long ctf_snapshots;    /* ctf_snapshot() plus ctf_update() count.  */
 309   unsigned long ctf_snapshot_lu;  /* ctf_snapshot() call count at last update.  */
 310   ctf_archive_t *ctf_archive;     /* Archive this ctf_file_t came from.  */
 311   ctf_list_t ctf_errs_warnings;   /* CTF errors and warnings.  */
 312   ctf_dynhash_t *ctf_link_inputs; /* Inputs to this link.  */
 313   ctf_dynhash_t *ctf_link_outputs; /* Additional outputs from this link.  */
 314   ctf_dynhash_t *ctf_link_type_mapping; /* Map input types to output types.  */
 315   ctf_dynhash_t *ctf_link_cu_mapping;   /* Map CU names to CTF dict names.  */
 316   /* Allow the caller to Change the name of link archive members.  */
 317   ctf_link_memb_name_changer_f *ctf_link_memb_name_changer;
 318   void *ctf_link_memb_name_changer_arg; /* Argument for it.  */
 319   ctf_dynhash_t *ctf_add_processing; /* Types ctf_add_type is working on now.  */
 320   char *ctf_tmp_typeslice;        /* Storage for slicing up type names.  */
 321   size_t ctf_tmp_typeslicelen;    /* Size of the typeslice.  */
 322   void *ctf_specific;             /* Data for ctf_get/setspecific().  */
 323 };
 324
 325 /* An abstraction over both a ctf_file_t and a ctf_archive_t.  */
 326
 327 struct ctf_archive_internal
 328 {
 329   int ctfi_is_archive;
 330   int ctfi_unmap_on_close;
 331   ctf_file_t *ctfi_file;
 332   struct ctf_archive *ctfi_archive;
 333   ctf_sect_t ctfi_symsect;
 334   ctf_sect_t ctfi_strsect;
 335   int ctfi_free_symsect;
 336   void *ctfi_data;
 337   bfd *ctfi_abfd;                   /* Optional source of section data.  */
 338   void (*ctfi_bfd_close) (struct ctf_archive_internal *);
 339 };
 340
 341 /* Iterator state for the *_next() functions.  */
 342
 343 /* A single hash key/value pair.  */
 344 typedef struct ctf_next_hkv
 345 {
 346   void *hkv_key;
 347   void *hkv_value;
 348 } ctf_next_hkv_t;
 349
 350 struct ctf_next
 351 {
 352   void (*ctn_iter_fun) (void);
 353   ctf_id_t ctn_type;
 354   ssize_t ctn_size;
 355   ssize_t ctn_increment;
 356   uint32_t ctn_n;
 357   /* We can save space on this side of things by noting that a container is
 358      either dynamic or not, as a whole, and a given iterator can only iterate
 359      over one kind of thing at once: so we can overlap the DTD and non-DTD
 360      members, and the structure, variable and enum members, etc.  */
 361   union
 362   {
 363     const ctf_member_t *ctn_mp;
 364     const ctf_lmember_t *ctn_lmp;
 365     const ctf_dmdef_t *ctn_dmd;
 366     const ctf_enum_t *ctn_en;
 367     const ctf_dvdef_t *ctn_dvd;
 368     ctf_next_hkv_t *ctn_sorted_hkv;
 369     void **ctn_hash_slot;
 370   } u;
 371   /* This union is of various sorts of container we can iterate over:
 372      currently dictionaries and archives, dynhashes, and dynsets.  */
 373   union
 374   {
 375     const ctf_file_t *ctn_fp;
 376     const ctf_archive_t *ctn_arc;
 377     const ctf_dynhash_t *ctn_h;
 378     const ctf_dynset_t *ctn_s;
 379   } cu;
 380 };
 381
 382 /* Return x rounded up to an alignment boundary.
 383    eg, P2ROUNDUP(0x1234, 0x100) == 0x1300 (0x13*align)
 384    eg, P2ROUNDUP(0x5600, 0x100) == 0x5600 (0x56*align)  */
 385 #define P2ROUNDUP(x, align)             (-(-(x) & -(align)))
 386
 387 /* * If an offs is not aligned already then round it up and align it. */
 388 #define LCTF_ALIGN_OFFS(offs, align) ((offs + (align - 1)) & ~(align - 1))
 389
 390 #define LCTF_TYPE_ISPARENT(fp, id) ((id) <= fp->ctf_parmax)
 391 #define LCTF_TYPE_ISCHILD(fp, id) ((id) > fp->ctf_parmax)
 392 #define LCTF_TYPE_TO_INDEX(fp, id) ((id) & (fp->ctf_parmax))
 393 #define LCTF_INDEX_TO_TYPE(fp, id, child) (child ? ((id) | (fp->ctf_parmax+1)) : \
 394                                            (id))
 395
 396 #define LCTF_INDEX_TO_TYPEPTR(fp, i) \
 397     ((fp->ctf_flags & LCTF_RDWR) ?                                      \
 398      &(ctf_dtd_lookup (fp, LCTF_INDEX_TO_TYPE                           \
 399                        (fp, i, fp->ctf_flags & LCTF_CHILD))->dtd_data) : \
 400      (ctf_type_t *)((uintptr_t)(fp)->ctf_buf + (fp)->ctf_txlate[(i)]))
 401
 402 #define LCTF_INFO_KIND(fp, info)        ((fp)->ctf_fileops->ctfo_get_kind(info))
 403 #define LCTF_INFO_ISROOT(fp, info)      ((fp)->ctf_fileops->ctfo_get_root(info))
 404 #define LCTF_INFO_VLEN(fp, info)        ((fp)->ctf_fileops->ctfo_get_vlen(info))
 405 #define LCTF_VBYTES(fp, kind, size, vlen) \
 406   ((fp)->ctf_fileops->ctfo_get_vbytes(kind, size, vlen))
 407
 408 #define LCTF_CHILD      0x0001  /* CTF container is a child */
 409 #define LCTF_RDWR       0x0002  /* CTF container is writable */
 410 #define LCTF_DIRTY      0x0004  /* CTF container has been modified */
 411
 412 extern ctf_names_t *ctf_name_table (ctf_file_t *, int);
 413 extern const ctf_type_t *ctf_lookup_by_id (ctf_file_t **, ctf_id_t);
 414 extern ctf_id_t ctf_lookup_by_rawname (ctf_file_t *, int, const char *);
 415 extern ctf_id_t ctf_lookup_by_rawhash (ctf_file_t *, ctf_names_t *, const char *);
 416 extern void ctf_set_ctl_hashes (ctf_file_t *);
 417
 418 extern ctf_file_t *ctf_get_dict (ctf_file_t *fp, ctf_id_t type);
 419
 420 typedef unsigned int (*ctf_hash_fun) (const void *ptr);
 421 extern unsigned int ctf_hash_integer (const void *ptr);
 422 extern unsigned int ctf_hash_string (const void *ptr);
 423 extern unsigned int ctf_hash_type_mapping_key (const void *ptr);
 424
 425 typedef int (*ctf_hash_eq_fun) (const void *, const void *);
 426 extern int ctf_hash_eq_integer (const void *, const void *);
 427 extern int ctf_hash_eq_string (const void *, const void *);
 428 extern int ctf_hash_eq_type_mapping_key (const void *, const void *);
 429
 430 extern int ctf_dynset_eq_string (const void *, const void *);
 431
 432 typedef void (*ctf_hash_free_fun) (void *);
 433
 434 typedef void (*ctf_hash_iter_f) (void *key, void *value, void *arg);
 435 typedef int (*ctf_hash_iter_remove_f) (void *key, void *value, void *arg);
 436 typedef int (*ctf_hash_iter_find_f) (void *key, void *value, void *arg);
 437 typedef int (*ctf_hash_sort_f) (const ctf_next_hkv_t *, const ctf_next_hkv_t *,
 438                                 void *arg);
 439
 440 extern ctf_hash_t *ctf_hash_create (unsigned long, ctf_hash_fun, ctf_hash_eq_fun);
 441 extern int ctf_hash_insert_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
 442 extern int ctf_hash_define_type (ctf_hash_t *, ctf_file_t *, uint32_t, uint32_t);
 443 extern ctf_id_t ctf_hash_lookup_type (ctf_hash_t *, ctf_file_t *, const char *);
 444 extern uint32_t ctf_hash_size (const ctf_hash_t *);
 445 extern void ctf_hash_destroy (ctf_hash_t *);
 446
 447 extern ctf_dynhash_t *ctf_dynhash_create (ctf_hash_fun, ctf_hash_eq_fun,
 448                                           ctf_hash_free_fun, ctf_hash_free_fun);
 449 extern int ctf_dynhash_insert (ctf_dynhash_t *, void *, void *);
 450 extern void ctf_dynhash_remove (ctf_dynhash_t *, const void *);
 451 extern size_t ctf_dynhash_elements (ctf_dynhash_t *);
 452 extern void ctf_dynhash_empty (ctf_dynhash_t *);
 453 extern void *ctf_dynhash_lookup (ctf_dynhash_t *, const void *);
 454 extern int ctf_dynhash_lookup_kv (ctf_dynhash_t *, const void *key,
 455                                   const void **orig_key, void **value);
 456 extern void ctf_dynhash_destroy (ctf_dynhash_t *);
 457 extern void ctf_dynhash_iter (ctf_dynhash_t *, ctf_hash_iter_f, void *);
 458 extern void ctf_dynhash_iter_remove (ctf_dynhash_t *, ctf_hash_iter_remove_f,
 459                                      void *);
 460 extern void *ctf_dynhash_iter_find (ctf_dynhash_t *, ctf_hash_iter_find_f,
 461                                     void *);
 462 extern int ctf_dynhash_next (ctf_dynhash_t *, ctf_next_t **,
 463                              void **key, void **value);
 464 extern int ctf_dynhash_next_sorted (ctf_dynhash_t *, ctf_next_t **,
 465                                     void **key, void **value, ctf_hash_sort_f,
 466                                     void *);
 467
 468 extern ctf_dynset_t *ctf_dynset_create (htab_hash, htab_eq, ctf_hash_free_fun);
 469 extern int ctf_dynset_insert (ctf_dynset_t *, void *);
 470 extern void ctf_dynset_remove (ctf_dynset_t *, const void *);
 471 extern void ctf_dynset_destroy (ctf_dynset_t *);
 472 extern void *ctf_dynset_lookup (ctf_dynset_t *, const void *);
 473 extern int ctf_dynset_exists (ctf_dynset_t *, const void *key,
 474                               const void **orig_key);
 475 extern int ctf_dynset_next (ctf_dynset_t *, ctf_next_t **, void **key);
 476 extern void *ctf_dynset_lookup_any (ctf_dynset_t *);
 477
 478 #define ctf_list_prev(elem)     ((void *)(((ctf_list_t *)(elem))->l_prev))
 479 #define ctf_list_next(elem)     ((void *)(((ctf_list_t *)(elem))->l_next))
 480
 481 extern void ctf_list_append (ctf_list_t *, void *);
 482 extern void ctf_list_prepend (ctf_list_t *, void *);
 483 extern void ctf_list_delete (ctf_list_t *, void *);
 484 extern int ctf_list_empty_p (ctf_list_t *lp);
 485
 486 extern int ctf_dtd_insert (ctf_file_t *, ctf_dtdef_t *, int flag, int kind);
 487 extern void ctf_dtd_delete (ctf_file_t *, ctf_dtdef_t *);
 488 extern ctf_dtdef_t *ctf_dtd_lookup (const ctf_file_t *, ctf_id_t);
 489 extern ctf_dtdef_t *ctf_dynamic_type (const ctf_file_t *, ctf_id_t);
 490
 491 extern int ctf_dvd_insert (ctf_file_t *, ctf_dvdef_t *);
 492 extern void ctf_dvd_delete (ctf_file_t *, ctf_dvdef_t *);
 493 extern ctf_dvdef_t *ctf_dvd_lookup (const ctf_file_t *, const char *);
 494
 495 extern void ctf_add_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
 496                                   ctf_file_t *dst_fp, ctf_id_t dst_type);
 497 extern ctf_id_t ctf_type_mapping (ctf_file_t *src_fp, ctf_id_t src_type,
 498                                   ctf_file_t **dst_fp);
 499
 500 extern void ctf_decl_init (ctf_decl_t *);
 501 extern void ctf_decl_fini (ctf_decl_t *);
 502 extern void ctf_decl_push (ctf_decl_t *, ctf_file_t *, ctf_id_t);
 503
 504 _libctf_printflike_ (2, 3)
 505 extern void ctf_decl_sprintf (ctf_decl_t *, const char *, ...);
 506 extern char *ctf_decl_buf (ctf_decl_t *cd);
 507
 508 extern const char *ctf_strptr (ctf_file_t *, uint32_t);
 509 extern const char *ctf_strraw (ctf_file_t *, uint32_t);
 510 extern const char *ctf_strraw_explicit (ctf_file_t *, uint32_t,
 511                                         ctf_strs_t *);
 512 extern int ctf_str_create_atoms (ctf_file_t *);
 513 extern void ctf_str_free_atoms (ctf_file_t *);
 514 extern uint32_t ctf_str_add (ctf_file_t *, const char *);
 515 extern uint32_t ctf_str_add_ref (ctf_file_t *, const char *, uint32_t *ref);
 516 extern int ctf_str_add_external (ctf_file_t *, const char *, uint32_t offset);
 517 extern void ctf_str_remove_ref (ctf_file_t *, const char *, uint32_t *ref);
 518 extern void ctf_str_rollback (ctf_file_t *, ctf_snapshot_id_t);
 519 extern void ctf_str_purge_refs (ctf_file_t *);
 520 extern ctf_strs_writable_t ctf_str_write_strtab (ctf_file_t *);
 521
 522 extern struct ctf_archive_internal *
 523 ctf_new_archive_internal (int is_archive, int unmap_on_close,
 524                           struct ctf_archive *, ctf_file_t *,
 525                           const ctf_sect_t *symsect,
 526                           const ctf_sect_t *strsect, int *errp);
 527 extern struct ctf_archive *ctf_arc_open_internal (const char *, int *);
 528 extern void ctf_arc_close_internal (struct ctf_archive *);
 529 extern void *ctf_set_open_errno (int *, int);
 530 extern unsigned long ctf_set_errno (ctf_file_t *, int);
 531
 532 extern ctf_file_t *ctf_simple_open_internal (const char *, size_t, const char *,
 533                                              size_t, size_t,
 534                                              const char *, size_t,
 535                                              ctf_dynhash_t *, int, int *);
 536 extern ctf_file_t *ctf_bufopen_internal (const ctf_sect_t *, const ctf_sect_t *,
 537                                          const ctf_sect_t *, ctf_dynhash_t *,
 538                                          int, int *);
 539 extern int ctf_serialize (ctf_file_t *);
 540
 541 _libctf_malloc_
 542 extern void *ctf_mmap (size_t length, size_t offset, int fd);
 543 extern void ctf_munmap (void *, size_t);
 544 extern ssize_t ctf_pread (int fd, void *buf, ssize_t count, off_t offset);
 545
 546 extern void *ctf_realloc (ctf_file_t *, void *, size_t);
 547 extern char *ctf_str_append (char *, const char *);
 548 extern char *ctf_str_append_noerr (char *, const char *);
 549 extern const char *ctf_strerror (int);
 550
 551 extern ctf_id_t ctf_type_resolve_unsliced (ctf_file_t *, ctf_id_t);
 552 extern int ctf_type_kind_unsliced (ctf_file_t *, ctf_id_t);
 553
 554 _libctf_printflike_ (1, 2)
 555 extern void ctf_dprintf (const char *, ...);
 556 extern void libctf_init_debug (void);
 557
 558 _libctf_printflike_ (3, 4)
 559 extern void ctf_err_warn (ctf_file_t *, int is_warning, const char *, ...);
 560 extern void ctf_assert_fail_internal (ctf_file_t *, const char *,
 561                                       size_t, const char *);
 562
 563 extern Elf64_Sym *ctf_sym_to_elf64 (const Elf32_Sym *src, Elf64_Sym *dst);
 564 extern const char *ctf_lookup_symbol_name (ctf_file_t *fp, unsigned long symidx);
 565
 566 /* Variables, all underscore-prepended. */
 567
 568 extern const char _CTF_SECTION[];       /* name of CTF ELF section */
 569 extern const char _CTF_NULLSTR[];       /* empty string */
 570
 571 extern int _libctf_version;     /* library client version */
 572 extern int _libctf_debug;       /* debugging messages enabled */
 573
 574 #include "ctf-inlines.h"
 575
 576 #ifdef  __cplusplus
 577 }
 578 #endif
 579
 580 #endif /* _CTF_IMPL_H */