1 /* Function declarations for libiberty. 2 3 Copyright (C) 1997-2018 Free Software Foundation, Inc. 4 5 Note - certain prototypes declared in this header file are for 6 functions whoes implementation copyright does not belong to the 7 FSF. Those prototypes are present in this file for reference 8 purposes only and their presence in this file should not construed 9 as an indication of ownership by the FSF of the implementation of 10 those functions in any way or form whatsoever. 11 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2, or (at your option) 15 any later version. 16 17 This program is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software 24 Foundation, Inc., 51 Franklin Street - Fifth Floor, 25 Boston, MA 02110-1301, USA. 26 27 Written by Cygnus Support, 1994. 28 29 The libiberty library provides a number of functions which are 30 missing on some operating systems. We do not declare those here, 31 to avoid conflicts with the system header files on operating 32 systems that do support those functions. In this file we only 33 declare those functions which are specific to libiberty. */ 34 35 #ifndef LIBIBERTY_H 36 #define LIBIBERTY_H 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 #include "ansidecl.h" 43 44 /* Get a definition for size_t. */ 45 #include <stddef.h> 46 /* Get a definition for va_list. */ 47 #include <stdarg.h> 48 49 #include <stdio.h> 50 51 /* If the OS supports it, ensure that the supplied stream is setup to 52 avoid any multi-threaded locking. Otherwise leave the FILE pointer 53 unchanged. If the stream is NULL do nothing. */ 54 55 extern void unlock_stream (FILE *); 56 57 /* If the OS supports it, ensure that the standard I/O streams, stdin, 58 stdout and stderr are setup to avoid any multi-threaded locking. 59 Otherwise do nothing. */ 60 61 extern void unlock_std_streams (void); 62 63 /* Open and return a FILE pointer. If the OS supports it, ensure that 64 the stream is setup to avoid any multi-threaded locking. Otherwise 65 return the FILE pointer unchanged. */ 66 67 extern FILE *fopen_unlocked (const char *, const char *); 68 extern FILE *fdopen_unlocked (int, const char *); 69 extern FILE *freopen_unlocked (const char *, const char *, FILE *); 70 71 /* Build an argument vector from a string. Allocates memory using 72 malloc. Use freeargv to free the vector. */ 73 74 extern char **buildargv (const char *) ATTRIBUTE_MALLOC; 75 76 /* Free a vector returned by buildargv. */ 77 78 extern void freeargv (char **); 79 80 /* Duplicate an argument vector. Allocates memory using malloc. Use 81 freeargv to free the vector. */ 82 83 extern char **dupargv (char * const *) ATTRIBUTE_MALLOC; 84 85 /* Expand "@file" arguments in argv. */ 86 87 extern void expandargv (int *, char ***); 88 89 /* Write argv to an @-file, inserting necessary quoting. */ 90 91 extern int writeargv (char * const *, FILE *); 92 93 /* Return the number of elements in argv. */ 94 95 extern int countargv (char * const *); 96 97 /* Return the last component of a path name. Note that we can't use a 98 prototype here because the parameter is declared inconsistently 99 across different systems, sometimes as "char *" and sometimes as 100 "const char *" */ 101 102 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is 103 undefined, we haven't run the autoconf check so provide the 104 declaration without arguments. If it is 0, we checked and failed 105 to find the declaration so provide a fully prototyped one. If it 106 is 1, we found it so don't provide any declaration at all. */ 107 #if !HAVE_DECL_BASENAME 108 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) \ 109 || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \ 110 || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \ 111 || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME) 112 extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 113 #else 114 /* Do not allow basename to be used if there is no prototype seen. We 115 either need to use the above prototype or have one from 116 autoconf which would result in HAVE_DECL_BASENAME being set. */ 117 #define basename basename_cannot_be_used_without_a_prototype 118 #endif 119 #endif 120 121 /* A well-defined basename () that is always compiled in. */ 122 123 extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 124 125 /* Same, but assumes DOS semantics (drive name, backslash is also a 126 dir separator) regardless of host. */ 127 128 extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 129 130 /* Same, but assumes Unix semantics (absolute paths always start with 131 a slash, only forward slash is accepted as dir separator) 132 regardless of host. */ 133 134 extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 135 136 /* A well-defined realpath () that is always compiled in. */ 137 138 extern char *lrealpath (const char *); 139 140 /* Concatenate an arbitrary number of strings. You must pass NULL as 141 the last argument of this function, to terminate the list of 142 strings. Allocates memory using xmalloc. */ 143 144 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 145 146 /* Concatenate an arbitrary number of strings. You must pass NULL as 147 the last argument of this function, to terminate the list of 148 strings. Allocates memory using xmalloc. The first argument is 149 not one of the strings to be concatenated, but if not NULL is a 150 pointer to be freed after the new string is created, similar to the 151 way xrealloc works. */ 152 153 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 154 155 /* Determine the length of concatenating an arbitrary number of 156 strings. You must pass NULL as the last argument of this function, 157 to terminate the list of strings. */ 158 159 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; 160 161 /* Concatenate an arbitrary number of strings into a SUPPLIED area of 162 memory. You must pass NULL as the last argument of this function, 163 to terminate the list of strings. The supplied memory is assumed 164 to be large enough. */ 165 166 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL; 167 168 /* Concatenate an arbitrary number of strings into a GLOBAL area of 169 memory. You must pass NULL as the last argument of this function, 170 to terminate the list of strings. The supplied memory is assumed 171 to be large enough. */ 172 173 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 174 175 /* This is the global area used by concat_copy2. */ 176 177 extern char *libiberty_concat_ptr; 178 179 /* Concatenate an arbitrary number of strings. You must pass NULL as 180 the last argument of this function, to terminate the list of 181 strings. Allocates memory using alloca. The arguments are 182 evaluated twice! */ 183 #define ACONCAT(ACONCAT_PARAMS) \ 184 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \ 185 concat_copy2 ACONCAT_PARAMS) 186 187 /* Check whether two file descriptors refer to the same file. */ 188 189 extern int fdmatch (int fd1, int fd2); 190 191 /* Return the position of the first bit set in the argument. */ 192 /* Prototypes vary from system to system, so we only provide a 193 prototype on systems where we know that we need it. */ 194 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS 195 extern int ffs(int); 196 #endif 197 198 /* Get the working directory. The result is cached, so don't call 199 chdir() between calls to getpwd(). */ 200 201 extern char * getpwd (void); 202 203 /* Get the current time. */ 204 /* Prototypes vary from system to system, so we only provide a 205 prototype on systems where we know that we need it. */ 206 #ifdef __MINGW32__ 207 /* Forward declaration to avoid #include <sys/time.h>. */ 208 struct timeval; 209 extern int gettimeofday (struct timeval *, void *); 210 #endif 211 212 /* Get the amount of time the process has run, in microseconds. */ 213 214 extern long get_run_time (void); 215 216 /* Generate a relocated path to some installation directory. Allocates 217 return value using malloc. */ 218 219 extern char *make_relative_prefix (const char *, const char *, 220 const char *) ATTRIBUTE_MALLOC; 221 222 /* Generate a relocated path to some installation directory without 223 attempting to follow any soft links. Allocates 224 return value using malloc. */ 225 226 extern char *make_relative_prefix_ignore_links (const char *, const char *, 227 const char *) ATTRIBUTE_MALLOC; 228 229 /* Returns a pointer to a directory path suitable for creating temporary 230 files in. */ 231 232 extern const char *choose_tmpdir (void) ATTRIBUTE_RETURNS_NONNULL; 233 234 /* Choose a temporary directory to use for scratch files. */ 235 236 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 237 238 /* Return a temporary file name or NULL if unable to create one. */ 239 240 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; 241 242 /* Remove a link to a file unless it is special. */ 243 244 extern int unlink_if_ordinary (const char *); 245 246 /* Allocate memory filled with spaces. Allocates using malloc. */ 247 248 extern const char *spaces (int count); 249 250 /* Return the maximum error number for which strerror will return a 251 string. */ 252 253 extern int errno_max (void); 254 255 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns 256 "EINVAL"). */ 257 258 extern const char *strerrno (int); 259 260 /* Given the name of an errno value, return the value. */ 261 262 extern int strtoerrno (const char *); 263 264 /* ANSI's strerror(), but more robust. */ 265 266 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL; 267 268 /* Return the maximum signal number for which strsignal will return a 269 string. */ 270 271 extern int signo_max (void); 272 273 /* Return a signal message string for a signal number 274 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ 275 /* This is commented out as it can conflict with one in system headers. 276 We still document its existence though. */ 277 278 /*extern const char *strsignal (int);*/ 279 280 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns 281 "SIGHUP"). */ 282 283 extern const char *strsigno (int); 284 285 /* Given the name of a signal, return its number. */ 286 287 extern int strtosigno (const char *); 288 289 /* Register a function to be run by xexit. Returns 0 on success. */ 290 291 extern int xatexit (void (*fn) (void)); 292 293 /* Exit, calling all the functions registered with xatexit. */ 294 295 extern void xexit (int status) ATTRIBUTE_NORETURN; 296 297 /* Set the program name used by xmalloc. */ 298 299 extern void xmalloc_set_program_name (const char *); 300 301 /* Report an allocation failure. */ 302 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; 303 304 /* Allocate memory without fail. If malloc fails, this will print a 305 message to stderr (using the name set by xmalloc_set_program_name, 306 if any) and then call xexit. */ 307 308 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 309 310 /* Reallocate memory without fail. This works like xmalloc. Note, 311 realloc type functions are not suitable for attribute malloc since 312 they may return the same address across multiple calls. */ 313 314 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL; 315 316 /* Allocate memory without fail and set it to zero. This works like 317 xmalloc. */ 318 319 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 320 321 /* Copy a string into a memory buffer without fail. */ 322 323 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 324 325 /* Copy at most N characters from string into a buffer without fail. */ 326 327 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 328 329 /* Copy an existing memory buffer to a new memory buffer without fail. */ 330 331 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 332 333 /* Physical memory routines. Return values are in BYTES. */ 334 extern double physmem_total (void); 335 extern double physmem_available (void); 336 337 /* Compute the 32-bit CRC of a block of memory. */ 338 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int); 339 340 /* These macros provide a K&R/C89/C++-friendly way of allocating structures 341 with nice encapsulation. The XDELETE*() macros are technically 342 superfluous, but provided here for symmetry. Using them consistently 343 makes it easier to update client code to use different allocators such 344 as new/delete and new[]/delete[]. */ 345 346 /* Scalar allocators. */ 347 348 #define XALLOCA(T) ((T *) alloca (sizeof (T))) 349 #define XNEW(T) ((T *) xmalloc (sizeof (T))) 350 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) 351 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T))) 352 #define XDELETE(P) free ((void*) (P)) 353 354 /* Array allocators. */ 355 356 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N))) 357 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) 358 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) 359 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N))) 360 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) 361 #define XDELETEVEC(P) free ((void*) (P)) 362 363 /* Allocators for variable-sized structures and raw buffers. */ 364 365 #define XALLOCAVAR(T, S) ((T *) alloca ((S))) 366 #define XNEWVAR(T, S) ((T *) xmalloc ((S))) 367 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) 368 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2))) 369 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) 370 371 /* Type-safe obstack allocator. */ 372 373 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) 374 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N))) 375 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S))) 376 #define XOBFINISH(O, T) ((T) obstack_finish ((O))) 377 378 /* hex character manipulation routines */ 379 380 #define _hex_array_size 256 381 #define _hex_bad 99 382 extern const unsigned char _hex_value[_hex_array_size]; 383 extern void hex_init (void); 384 #define hex_p(c) (hex_value (c) != _hex_bad) 385 /* If you change this, note well: Some code relies on side effects in 386 the argument being performed exactly once. */ 387 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) 388 389 /* Flags for pex_init. These are bits to be or'ed together. */ 390 391 /* Record subprocess times, if possible. */ 392 #define PEX_RECORD_TIMES 0x1 393 394 /* Use pipes for communication between processes, if possible. */ 395 #define PEX_USE_PIPES 0x2 396 397 /* Save files used for communication between processes. */ 398 #define PEX_SAVE_TEMPS 0x4 399 400 /* Max number of alloca bytes per call before we must switch to malloc. 401 402 ?? Swiped from gnulib's regex_internal.h header. Is this actually 403 the case? This number seems arbitrary, though sane. 404 405 The OS usually guarantees only one guard page at the bottom of the stack, 406 and a page size can be as small as 4096 bytes. So we cannot safely 407 allocate anything larger than 4096 bytes. Also care for the possibility 408 of a few compiler-allocated temporary stack slots. */ 409 #define MAX_ALLOCA_SIZE 4032 410 411 /* Prepare to execute one or more programs, with standard output of 412 each program fed to standard input of the next. 413 FLAGS As above. 414 PNAME The name of the program to report in error messages. 415 TEMPBASE A base name to use for temporary files; may be NULL to 416 use a random name. 417 Returns NULL on error. */ 418 419 extern struct pex_obj *pex_init (int flags, const char *pname, 420 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL; 421 422 /* Flags for pex_run. These are bits to be or'ed together. */ 423 424 /* Last program in pipeline. Standard output of program goes to 425 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do 426 not set this if you want to call pex_read_output. After this is 427 set, pex_run may no longer be called with the same struct 428 pex_obj. */ 429 #define PEX_LAST 0x1 430 431 /* Search for program in executable search path. */ 432 #define PEX_SEARCH 0x2 433 434 /* OUTNAME is a suffix. */ 435 #define PEX_SUFFIX 0x4 436 437 /* Send program's standard error to standard output. */ 438 #define PEX_STDERR_TO_STDOUT 0x8 439 440 /* Input file should be opened in binary mode. This flag is ignored 441 on Unix. */ 442 #define PEX_BINARY_INPUT 0x10 443 444 /* Output file should be opened in binary mode. This flag is ignored 445 on Unix. For proper behaviour PEX_BINARY_INPUT and 446 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using 447 PEX_BINARY_OUTPUT should be followed by a call using 448 PEX_BINARY_INPUT. */ 449 #define PEX_BINARY_OUTPUT 0x20 450 451 /* Capture stderr to a pipe. The output can be read by 452 calling pex_read_err and reading from the returned 453 FILE object. This flag may be specified only for 454 the last program in a pipeline. 455 456 This flag is supported only on Unix and Windows. */ 457 #define PEX_STDERR_TO_PIPE 0x40 458 459 /* Capture stderr in binary mode. This flag is ignored 460 on Unix. */ 461 #define PEX_BINARY_ERROR 0x80 462 463 /* Append stdout to existing file instead of truncating it. */ 464 #define PEX_STDOUT_APPEND 0x100 465 466 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */ 467 #define PEX_STDERR_APPEND 0x200 468 469 /* Execute one program. Returns NULL on success. On error returns an 470 error string (typically just the name of a system call); the error 471 string is statically allocated. 472 473 OBJ Returned by pex_init. 474 475 FLAGS As above. 476 477 EXECUTABLE The program to execute. 478 479 ARGV NULL terminated array of arguments to pass to the program. 480 481 OUTNAME Sets the output file name as follows: 482 483 PEX_SUFFIX set (OUTNAME may not be NULL): 484 TEMPBASE parameter to pex_init not NULL: 485 Output file name is the concatenation of TEMPBASE 486 and OUTNAME. 487 TEMPBASE is NULL: 488 Output file name is a random file name ending in 489 OUTNAME. 490 PEX_SUFFIX not set: 491 OUTNAME not NULL: 492 Output file name is OUTNAME. 493 OUTNAME NULL, TEMPBASE not NULL: 494 Output file name is randomly chosen using 495 TEMPBASE. 496 OUTNAME NULL, TEMPBASE NULL: 497 Output file name is randomly chosen. 498 499 If PEX_LAST is not set, the output file name is the 500 name to use for a temporary file holding stdout, if 501 any (there will not be a file if PEX_USE_PIPES is set 502 and the system supports pipes). If a file is used, it 503 will be removed when no longer needed unless 504 PEX_SAVE_TEMPS is set. 505 506 If PEX_LAST is set, and OUTNAME is not NULL, standard 507 output is written to the output file name. The file 508 will not be removed. If PEX_LAST and PEX_SUFFIX are 509 both set, TEMPBASE may not be NULL. 510 511 ERRNAME If not NULL, this is the name of a file to which 512 standard error is written. If NULL, standard error of 513 the program is standard error of the caller. 514 515 ERR On an error return, *ERR is set to an errno value, or 516 to 0 if there is no relevant errno. 517 */ 518 519 extern const char *pex_run (struct pex_obj *obj, int flags, 520 const char *executable, char * const *argv, 521 const char *outname, const char *errname, 522 int *err); 523 524 /* As for pex_run (), but takes an extra parameter to enable the 525 environment for the child process to be specified. 526 527 ENV The environment for the child process, specified as 528 an array of character pointers. Each element of the 529 array should point to a string of the form VAR=VALUE, 530 with the exception of the last element which must be 531 a null pointer. 532 */ 533 534 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, 535 const char *executable, 536 char * const *argv, 537 char * const *env, 538 const char *outname, 539 const char *errname, int *err); 540 541 /* Return a stream for a temporary file to pass to the first program 542 in the pipeline as input. The file name is chosen as for pex_run. 543 pex_run closes the file automatically; don't close it yourself. */ 544 545 extern FILE *pex_input_file (struct pex_obj *obj, int flags, 546 const char *in_name); 547 548 /* Return a stream for a pipe connected to the standard input of the 549 first program in the pipeline. You must have passed 550 `PEX_USE_PIPES' to `pex_init'. Close the returned stream 551 yourself. */ 552 553 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); 554 555 /* Read the standard output of the last program to be executed. 556 pex_run can not be called after this. BINARY should be non-zero if 557 the file should be opened in binary mode; this is ignored on Unix. 558 Returns NULL on error. Don't call fclose on the returned FILE; it 559 will be closed by pex_free. */ 560 561 extern FILE *pex_read_output (struct pex_obj *, int binary); 562 563 /* Read the standard error of the last program to be executed. 564 pex_run can not be called after this. BINARY should be non-zero if 565 the file should be opened in binary mode; this is ignored on Unix. 566 Returns NULL on error. Don't call fclose on the returned FILE; it 567 will be closed by pex_free. */ 568 569 extern FILE *pex_read_err (struct pex_obj *, int binary); 570 571 /* Return exit status of all programs in VECTOR. COUNT indicates the 572 size of VECTOR. The status codes in the vector are in the order of 573 the calls to pex_run. Returns 0 on error, 1 on success. */ 574 575 extern int pex_get_status (struct pex_obj *, int count, int *vector); 576 577 /* Return times of all programs in VECTOR. COUNT indicates the size 578 of VECTOR. struct pex_time is really just struct timeval, but that 579 is not portable to all systems. Returns 0 on error, 1 on 580 success. */ 581 582 struct pex_time 583 { 584 unsigned long user_seconds; 585 unsigned long user_microseconds; 586 unsigned long system_seconds; 587 unsigned long system_microseconds; 588 }; 589 590 extern int pex_get_times (struct pex_obj *, int count, 591 struct pex_time *vector); 592 593 /* Clean up a pex_obj. If you have not called pex_get_times or 594 pex_get_status, this will try to kill the subprocesses. */ 595 596 extern void pex_free (struct pex_obj *); 597 598 /* Just execute one program. Return value is as for pex_run. 599 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. 600 EXECUTABLE As for pex_run. 601 ARGV As for pex_run. 602 PNAME As for pex_init. 603 OUTNAME As for pex_run when PEX_LAST is set. 604 ERRNAME As for pex_run. 605 STATUS Set to exit status on success. 606 ERR As for pex_run. 607 */ 608 609 extern const char *pex_one (int flags, const char *executable, 610 char * const *argv, const char *pname, 611 const char *outname, const char *errname, 612 int *status, int *err); 613 614 /* pexecute and pwait are the old pexecute interface, still here for 615 backward compatibility. Don't use these for new code. Instead, 616 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ 617 618 /* Definitions used by the pexecute routine. */ 619 620 #define PEXECUTE_FIRST 1 621 #define PEXECUTE_LAST 2 622 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) 623 #define PEXECUTE_SEARCH 4 624 #define PEXECUTE_VERBOSE 8 625 626 /* Execute a program. */ 627 628 extern int pexecute (const char *, char * const *, const char *, 629 const char *, char **, char **, int); 630 631 /* Wait for pexecute to finish. */ 632 633 extern int pwait (int, int *, int); 634 635 #if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF 636 /* Like sprintf but provides a pointer to malloc'd storage, which must 637 be freed by the caller. */ 638 639 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; 640 #endif 641 642 /* Like asprintf but allocates memory without fail. This works like 643 xmalloc. */ 644 645 extern char *xasprintf (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF_1; 646 647 #if !HAVE_DECL_VASPRINTF 648 /* Like vsprintf but provides a pointer to malloc'd storage, which 649 must be freed by the caller. */ 650 651 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); 652 #endif 653 654 /* Like vasprintf but allocates memory without fail. This works like 655 xmalloc. */ 656 657 extern char *xvasprintf (const char *, va_list) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF(1,0); 658 659 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 660 /* Like sprintf but prints at most N characters. */ 661 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; 662 #endif 663 664 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 665 /* Like vsprintf but prints at most N characters. */ 666 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); 667 #endif 668 669 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN 670 extern size_t strnlen (const char *, size_t); 671 #endif 672 673 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 674 /* Compare version strings. */ 675 extern int strverscmp (const char *, const char *); 676 #endif 677 678 #if defined(HAVE_DECL_STRTOL) && !HAVE_DECL_STRTOL 679 extern long int strtol (const char *nptr, 680 char **endptr, int base); 681 #endif 682 683 #if defined(HAVE_DECL_STRTOUL) && !HAVE_DECL_STRTOUL 684 extern unsigned long int strtoul (const char *nptr, 685 char **endptr, int base); 686 #endif 687 688 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOLL) && !HAVE_DECL_STRTOLL 689 __extension__ 690 extern long long int strtoll (const char *nptr, 691 char **endptr, int base); 692 #endif 693 694 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOULL) && !HAVE_DECL_STRTOULL 695 __extension__ 696 extern unsigned long long int strtoull (const char *nptr, 697 char **endptr, int base); 698 #endif 699 700 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 701 /* Compare version strings. */ 702 extern int strverscmp (const char *, const char *); 703 #endif 704 705 /* Set the title of a process */ 706 extern void setproctitle (const char *name, ...); 707 708 /* Increase stack limit if possible. */ 709 extern void stack_limit_increase (unsigned long); 710 711 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 712 713 /* Drastically simplified alloca configurator. If we're using GCC, 714 we use __builtin_alloca; otherwise we use the C alloca. The C 715 alloca is always available. You can override GCC by defining 716 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is 717 also set/unset as it is often used to indicate whether code needs 718 to call alloca(0). */ 719 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; 720 #undef alloca 721 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA 722 # define alloca(x) __builtin_alloca(x) 723 # undef C_ALLOCA 724 # define ASTRDUP(X) \ 725 (__extension__ ({ const char *const libiberty_optr = (X); \ 726 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ 727 char *const libiberty_nptr = (char *) alloca (libiberty_len); \ 728 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) 729 #else 730 # define alloca(x) C_alloca(x) 731 # undef USE_C_ALLOCA 732 # define USE_C_ALLOCA 1 733 # undef C_ALLOCA 734 # define C_ALLOCA 1 735 extern const char *libiberty_optr; 736 extern char *libiberty_nptr; 737 extern unsigned long libiberty_len; 738 # define ASTRDUP(X) \ 739 (libiberty_optr = (X), \ 740 libiberty_len = strlen (libiberty_optr) + 1, \ 741 libiberty_nptr = (char *) alloca (libiberty_len), \ 742 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) 743 #endif 744 745 #ifdef __cplusplus 746 } 747 #endif 748 749 750 #endif /* ! defined (LIBIBERTY_H) */ 751