1 /* Function declarations for libiberty. 2 3 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 4 2006, 2007, 2008, 2009, 2010, 2011, 2013 Free Software Foundation, Inc. 5 6 Note - certain prototypes declared in this header file are for 7 functions whoes implementation copyright does not belong to the 8 FSF. Those prototypes are present in this file for reference 9 purposes only and their presence in this file should not construed 10 as an indication of ownership by the FSF of the implementation of 11 those functions in any way or form whatsoever. 12 13 This program is free software; you can redistribute it and/or modify 14 it under the terms of the GNU General Public License as published by 15 the Free Software Foundation; either version 2, or (at your option) 16 any later version. 17 18 This program is distributed in the hope that it will be useful, 19 but WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 GNU General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 51 Franklin Street - Fifth Floor, 26 Boston, MA 02110-1301, USA. 27 28 Written by Cygnus Support, 1994. 29 30 The libiberty library provides a number of functions which are 31 missing on some operating systems. We do not declare those here, 32 to avoid conflicts with the system header files on operating 33 systems that do support those functions. In this file we only 34 declare those functions which are specific to libiberty. */ 35 36 #ifndef LIBIBERTY_H 37 #define LIBIBERTY_H 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #include "ansidecl.h" 44 45 /* Get a definition for size_t. */ 46 #include <stddef.h> 47 /* Get a definition for va_list. */ 48 #include <stdarg.h> 49 50 #include <stdio.h> 51 52 /* If the OS supports it, ensure that the supplied stream is setup to 53 avoid any multi-threaded locking. Otherwise leave the FILE pointer 54 unchanged. If the stream is NULL do nothing. */ 55 56 extern void unlock_stream (FILE *); 57 58 /* If the OS supports it, ensure that the standard I/O streams, stdin, 59 stdout and stderr are setup to avoid any multi-threaded locking. 60 Otherwise do nothing. */ 61 62 extern void unlock_std_streams (void); 63 64 /* Open and return a FILE pointer. If the OS supports it, ensure that 65 the stream is setup to avoid any multi-threaded locking. Otherwise 66 return the FILE pointer unchanged. */ 67 68 extern FILE *fopen_unlocked (const char *, const char *); 69 extern FILE *fdopen_unlocked (int, const char *); 70 extern FILE *freopen_unlocked (const char *, const char *, FILE *); 71 72 /* Build an argument vector from a string. Allocates memory using 73 malloc. Use freeargv to free the vector. */ 74 75 extern char **buildargv (const char *) ATTRIBUTE_MALLOC; 76 77 /* Free a vector returned by buildargv. */ 78 79 extern void freeargv (char **); 80 81 /* Duplicate an argument vector. Allocates memory using malloc. Use 82 freeargv to free the vector. */ 83 84 extern char **dupargv (char **) ATTRIBUTE_MALLOC; 85 86 /* Expand "@file" arguments in argv. */ 87 88 extern void expandargv (int *, char ***); 89 90 /* Write argv to an @-file, inserting necessary quoting. */ 91 92 extern int writeargv (char **, FILE *); 93 94 /* Return the number of elements in argv. */ 95 96 extern int countargv (char**); 97 98 /* Return the last component of a path name. Note that we can't use a 99 prototype here because the parameter is declared inconsistently 100 across different systems, sometimes as "char *" and sometimes as 101 "const char *" */ 102 103 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is 104 undefined, we haven't run the autoconf check so provide the 105 declaration without arguments. If it is 0, we checked and failed 106 to find the declaration so provide a fully prototyped one. If it 107 is 1, we found it so don't provide any declaration at all. */ 108 #if !HAVE_DECL_BASENAME 109 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) \ 110 || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \ 111 || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \ 112 || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME) 113 extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 114 #else 115 /* Do not allow basename to be used if there is no prototype seen. We 116 either need to use the above prototype or have one from 117 autoconf which would result in HAVE_DECL_BASENAME being set. */ 118 #define basename basename_cannot_be_used_without_a_prototype 119 #endif 120 #endif 121 122 /* A well-defined basename () that is always compiled in. */ 123 124 extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 125 126 /* Same, but assumes DOS semantics (drive name, backslash is also a 127 dir separator) regardless of host. */ 128 129 extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 130 131 /* Same, but assumes Unix semantics (absolute paths always start with 132 a slash, only forward slash is accepted as dir separator) 133 regardless of host. */ 134 135 extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); 136 137 /* A well-defined realpath () that is always compiled in. */ 138 139 extern char *lrealpath (const char *); 140 141 /* Concatenate an arbitrary number of strings. You must pass NULL as 142 the last argument of this function, to terminate the list of 143 strings. Allocates memory using xmalloc. */ 144 145 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 146 147 /* Concatenate an arbitrary number of strings. You must pass NULL as 148 the last argument of this function, to terminate the list of 149 strings. Allocates memory using xmalloc. The first argument is 150 not one of the strings to be concatenated, but if not NULL is a 151 pointer to be freed after the new string is created, similar to the 152 way xrealloc works. */ 153 154 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 155 156 /* Determine the length of concatenating an arbitrary number of 157 strings. You must pass NULL as the last argument of this function, 158 to terminate the list of strings. */ 159 160 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; 161 162 /* Concatenate an arbitrary number of strings into a SUPPLIED area of 163 memory. You must pass NULL as the last argument of this function, 164 to terminate the list of strings. The supplied memory is assumed 165 to be large enough. */ 166 167 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL; 168 169 /* Concatenate an arbitrary number of strings into a GLOBAL area of 170 memory. You must pass NULL as the last argument of this function, 171 to terminate the list of strings. The supplied memory is assumed 172 to be large enough. */ 173 174 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 175 176 /* This is the global area used by concat_copy2. */ 177 178 extern char *libiberty_concat_ptr; 179 180 /* Concatenate an arbitrary number of strings. You must pass NULL as 181 the last argument of this function, to terminate the list of 182 strings. Allocates memory using alloca. The arguments are 183 evaluated twice! */ 184 #define ACONCAT(ACONCAT_PARAMS) \ 185 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \ 186 concat_copy2 ACONCAT_PARAMS) 187 188 /* Check whether two file descriptors refer to the same file. */ 189 190 extern int fdmatch (int fd1, int fd2); 191 192 /* Return the position of the first bit set in the argument. */ 193 /* Prototypes vary from system to system, so we only provide a 194 prototype on systems where we know that we need it. */ 195 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS 196 extern int ffs(int); 197 #endif 198 199 /* Get the working directory. The result is cached, so don't call 200 chdir() between calls to getpwd(). */ 201 202 extern char * getpwd (void); 203 204 /* Get the current time. */ 205 /* Prototypes vary from system to system, so we only provide a 206 prototype on systems where we know that we need it. */ 207 #ifdef __MINGW32__ 208 /* Forward declaration to avoid #include <sys/time.h>. */ 209 struct timeval; 210 extern int gettimeofday (struct timeval *, void *); 211 #endif 212 213 /* Get the amount of time the process has run, in microseconds. */ 214 215 extern long get_run_time (void); 216 217 /* Generate a relocated path to some installation directory. Allocates 218 return value using malloc. */ 219 220 extern char *make_relative_prefix (const char *, const char *, 221 const char *) ATTRIBUTE_MALLOC; 222 223 /* Generate a relocated path to some installation directory without 224 attempting to follow any soft links. Allocates 225 return value using malloc. */ 226 227 extern char *make_relative_prefix_ignore_links (const char *, const char *, 228 const char *) ATTRIBUTE_MALLOC; 229 230 /* Choose a temporary directory to use for scratch files. */ 231 232 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 233 234 /* Return a temporary file name or NULL if unable to create one. */ 235 236 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; 237 238 /* Remove a link to a file unless it is special. */ 239 240 extern int unlink_if_ordinary (const char *); 241 242 /* Allocate memory filled with spaces. Allocates using malloc. */ 243 244 extern const char *spaces (int count); 245 246 /* Return the maximum error number for which strerror will return a 247 string. */ 248 249 extern int errno_max (void); 250 251 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns 252 "EINVAL"). */ 253 254 extern const char *strerrno (int); 255 256 /* Given the name of an errno value, return the value. */ 257 258 extern int strtoerrno (const char *); 259 260 /* ANSI's strerror(), but more robust. */ 261 262 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL; 263 264 /* Return the maximum signal number for which strsignal will return a 265 string. */ 266 267 extern int signo_max (void); 268 269 /* Return a signal message string for a signal number 270 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ 271 /* This is commented out as it can conflict with one in system headers. 272 We still document its existence though. */ 273 274 /*extern const char *strsignal (int);*/ 275 276 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns 277 "SIGHUP"). */ 278 279 extern const char *strsigno (int); 280 281 /* Given the name of a signal, return its number. */ 282 283 extern int strtosigno (const char *); 284 285 /* Register a function to be run by xexit. Returns 0 on success. */ 286 287 extern int xatexit (void (*fn) (void)); 288 289 /* Exit, calling all the functions registered with xatexit. */ 290 291 extern void xexit (int status) ATTRIBUTE_NORETURN; 292 293 /* Set the program name used by xmalloc. */ 294 295 extern void xmalloc_set_program_name (const char *); 296 297 /* Report an allocation failure. */ 298 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; 299 300 /* Allocate memory without fail. If malloc fails, this will print a 301 message to stderr (using the name set by xmalloc_set_program_name, 302 if any) and then call xexit. */ 303 304 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 305 306 /* Reallocate memory without fail. This works like xmalloc. Note, 307 realloc type functions are not suitable for attribute malloc since 308 they may return the same address across multiple calls. */ 309 310 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL; 311 312 /* Allocate memory without fail and set it to zero. This works like 313 xmalloc. */ 314 315 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 316 317 /* Copy a string into a memory buffer without fail. */ 318 319 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 320 321 /* Copy at most N characters from string into a buffer without fail. */ 322 323 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 324 325 /* Copy an existing memory buffer to a new memory buffer without fail. */ 326 327 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 328 329 /* Physical memory routines. Return values are in BYTES. */ 330 extern double physmem_total (void); 331 extern double physmem_available (void); 332 333 /* Compute the 32-bit CRC of a block of memory. */ 334 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int); 335 336 /* These macros provide a K&R/C89/C++-friendly way of allocating structures 337 with nice encapsulation. The XDELETE*() macros are technically 338 superfluous, but provided here for symmetry. Using them consistently 339 makes it easier to update client code to use different allocators such 340 as new/delete and new[]/delete[]. */ 341 342 /* Scalar allocators. */ 343 344 #define XALLOCA(T) ((T *) alloca (sizeof (T))) 345 #define XNEW(T) ((T *) xmalloc (sizeof (T))) 346 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) 347 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T))) 348 #define XDELETE(P) free ((void*) (P)) 349 350 /* Array allocators. */ 351 352 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N))) 353 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) 354 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) 355 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N))) 356 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) 357 #define XDELETEVEC(P) free ((void*) (P)) 358 359 /* Allocators for variable-sized structures and raw buffers. */ 360 361 #define XALLOCAVAR(T, S) ((T *) alloca ((S))) 362 #define XNEWVAR(T, S) ((T *) xmalloc ((S))) 363 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) 364 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2))) 365 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) 366 367 /* Type-safe obstack allocator. */ 368 369 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) 370 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N))) 371 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S))) 372 #define XOBFINISH(O, T) ((T) obstack_finish ((O))) 373 374 /* hex character manipulation routines */ 375 376 #define _hex_array_size 256 377 #define _hex_bad 99 378 extern const unsigned char _hex_value[_hex_array_size]; 379 extern void hex_init (void); 380 #define hex_p(c) (hex_value (c) != _hex_bad) 381 /* If you change this, note well: Some code relies on side effects in 382 the argument being performed exactly once. */ 383 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) 384 385 /* Flags for pex_init. These are bits to be or'ed together. */ 386 387 /* Record subprocess times, if possible. */ 388 #define PEX_RECORD_TIMES 0x1 389 390 /* Use pipes for communication between processes, if possible. */ 391 #define PEX_USE_PIPES 0x2 392 393 /* Save files used for communication between processes. */ 394 #define PEX_SAVE_TEMPS 0x4 395 396 /* Prepare to execute one or more programs, with standard output of 397 each program fed to standard input of the next. 398 FLAGS As above. 399 PNAME The name of the program to report in error messages. 400 TEMPBASE A base name to use for temporary files; may be NULL to 401 use a random name. 402 Returns NULL on error. */ 403 404 extern struct pex_obj *pex_init (int flags, const char *pname, 405 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL; 406 407 /* Flags for pex_run. These are bits to be or'ed together. */ 408 409 /* Last program in pipeline. Standard output of program goes to 410 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do 411 not set this if you want to call pex_read_output. After this is 412 set, pex_run may no longer be called with the same struct 413 pex_obj. */ 414 #define PEX_LAST 0x1 415 416 /* Search for program in executable search path. */ 417 #define PEX_SEARCH 0x2 418 419 /* OUTNAME is a suffix. */ 420 #define PEX_SUFFIX 0x4 421 422 /* Send program's standard error to standard output. */ 423 #define PEX_STDERR_TO_STDOUT 0x8 424 425 /* Input file should be opened in binary mode. This flag is ignored 426 on Unix. */ 427 #define PEX_BINARY_INPUT 0x10 428 429 /* Output file should be opened in binary mode. This flag is ignored 430 on Unix. For proper behaviour PEX_BINARY_INPUT and 431 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using 432 PEX_BINARY_OUTPUT should be followed by a call using 433 PEX_BINARY_INPUT. */ 434 #define PEX_BINARY_OUTPUT 0x20 435 436 /* Capture stderr to a pipe. The output can be read by 437 calling pex_read_err and reading from the returned 438 FILE object. This flag may be specified only for 439 the last program in a pipeline. 440 441 This flag is supported only on Unix and Windows. */ 442 #define PEX_STDERR_TO_PIPE 0x40 443 444 /* Capture stderr in binary mode. This flag is ignored 445 on Unix. */ 446 #define PEX_BINARY_ERROR 0x80 447 448 /* Append stdout to existing file instead of truncating it. */ 449 #define PEX_STDOUT_APPEND 0x100 450 451 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */ 452 #define PEX_STDERR_APPEND 0x200 453 454 /* Execute one program. Returns NULL on success. On error returns an 455 error string (typically just the name of a system call); the error 456 string is statically allocated. 457 458 OBJ Returned by pex_init. 459 460 FLAGS As above. 461 462 EXECUTABLE The program to execute. 463 464 ARGV NULL terminated array of arguments to pass to the program. 465 466 OUTNAME Sets the output file name as follows: 467 468 PEX_SUFFIX set (OUTNAME may not be NULL): 469 TEMPBASE parameter to pex_init not NULL: 470 Output file name is the concatenation of TEMPBASE 471 and OUTNAME. 472 TEMPBASE is NULL: 473 Output file name is a random file name ending in 474 OUTNAME. 475 PEX_SUFFIX not set: 476 OUTNAME not NULL: 477 Output file name is OUTNAME. 478 OUTNAME NULL, TEMPBASE not NULL: 479 Output file name is randomly chosen using 480 TEMPBASE. 481 OUTNAME NULL, TEMPBASE NULL: 482 Output file name is randomly chosen. 483 484 If PEX_LAST is not set, the output file name is the 485 name to use for a temporary file holding stdout, if 486 any (there will not be a file if PEX_USE_PIPES is set 487 and the system supports pipes). If a file is used, it 488 will be removed when no longer needed unless 489 PEX_SAVE_TEMPS is set. 490 491 If PEX_LAST is set, and OUTNAME is not NULL, standard 492 output is written to the output file name. The file 493 will not be removed. If PEX_LAST and PEX_SUFFIX are 494 both set, TEMPBASE may not be NULL. 495 496 ERRNAME If not NULL, this is the name of a file to which 497 standard error is written. If NULL, standard error of 498 the program is standard error of the caller. 499 500 ERR On an error return, *ERR is set to an errno value, or 501 to 0 if there is no relevant errno. 502 */ 503 504 extern const char *pex_run (struct pex_obj *obj, int flags, 505 const char *executable, char * const *argv, 506 const char *outname, const char *errname, 507 int *err); 508 509 /* As for pex_run (), but takes an extra parameter to enable the 510 environment for the child process to be specified. 511 512 ENV The environment for the child process, specified as 513 an array of character pointers. Each element of the 514 array should point to a string of the form VAR=VALUE, 515 with the exception of the last element which must be 516 a null pointer. 517 */ 518 519 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, 520 const char *executable, 521 char * const *argv, 522 char * const *env, 523 const char *outname, 524 const char *errname, int *err); 525 526 /* Return a stream for a temporary file to pass to the first program 527 in the pipeline as input. The file name is chosen as for pex_run. 528 pex_run closes the file automatically; don't close it yourself. */ 529 530 extern FILE *pex_input_file (struct pex_obj *obj, int flags, 531 const char *in_name); 532 533 /* Return a stream for a pipe connected to the standard input of the 534 first program in the pipeline. You must have passed 535 `PEX_USE_PIPES' to `pex_init'. Close the returned stream 536 yourself. */ 537 538 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); 539 540 /* Read the standard output of the last program to be executed. 541 pex_run can not be called after this. BINARY should be non-zero if 542 the file should be opened in binary mode; this is ignored on Unix. 543 Returns NULL on error. Don't call fclose on the returned FILE; it 544 will be closed by pex_free. */ 545 546 extern FILE *pex_read_output (struct pex_obj *, int binary); 547 548 /* Read the standard error of the last program to be executed. 549 pex_run can not be called after this. BINARY should be non-zero if 550 the file should be opened in binary mode; this is ignored on Unix. 551 Returns NULL on error. Don't call fclose on the returned FILE; it 552 will be closed by pex_free. */ 553 554 extern FILE *pex_read_err (struct pex_obj *, int binary); 555 556 /* Return exit status of all programs in VECTOR. COUNT indicates the 557 size of VECTOR. The status codes in the vector are in the order of 558 the calls to pex_run. Returns 0 on error, 1 on success. */ 559 560 extern int pex_get_status (struct pex_obj *, int count, int *vector); 561 562 /* Return times of all programs in VECTOR. COUNT indicates the size 563 of VECTOR. struct pex_time is really just struct timeval, but that 564 is not portable to all systems. Returns 0 on error, 1 on 565 success. */ 566 567 struct pex_time 568 { 569 unsigned long user_seconds; 570 unsigned long user_microseconds; 571 unsigned long system_seconds; 572 unsigned long system_microseconds; 573 }; 574 575 extern int pex_get_times (struct pex_obj *, int count, 576 struct pex_time *vector); 577 578 /* Clean up a pex_obj. If you have not called pex_get_times or 579 pex_get_status, this will try to kill the subprocesses. */ 580 581 extern void pex_free (struct pex_obj *); 582 583 /* Just execute one program. Return value is as for pex_run. 584 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. 585 EXECUTABLE As for pex_run. 586 ARGV As for pex_run. 587 PNAME As for pex_init. 588 OUTNAME As for pex_run when PEX_LAST is set. 589 ERRNAME As for pex_run. 590 STATUS Set to exit status on success. 591 ERR As for pex_run. 592 */ 593 594 extern const char *pex_one (int flags, const char *executable, 595 char * const *argv, const char *pname, 596 const char *outname, const char *errname, 597 int *status, int *err); 598 599 /* pexecute and pwait are the old pexecute interface, still here for 600 backward compatibility. Don't use these for new code. Instead, 601 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ 602 603 /* Definitions used by the pexecute routine. */ 604 605 #define PEXECUTE_FIRST 1 606 #define PEXECUTE_LAST 2 607 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) 608 #define PEXECUTE_SEARCH 4 609 #define PEXECUTE_VERBOSE 8 610 611 /* Execute a program. */ 612 613 extern int pexecute (const char *, char * const *, const char *, 614 const char *, char **, char **, int); 615 616 /* Wait for pexecute to finish. */ 617 618 extern int pwait (int, int *, int); 619 620 #if !HAVE_DECL_ASPRINTF 621 /* Like sprintf but provides a pointer to malloc'd storage, which must 622 be freed by the caller. */ 623 624 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; 625 #endif 626 627 #if !HAVE_DECL_VASPRINTF 628 /* Like vsprintf but provides a pointer to malloc'd storage, which 629 must be freed by the caller. */ 630 631 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); 632 #endif 633 634 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 635 /* Like sprintf but prints at most N characters. */ 636 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; 637 #endif 638 639 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 640 /* Like vsprintf but prints at most N characters. */ 641 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); 642 #endif 643 644 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN 645 extern size_t strnlen (const char *, size_t); 646 #endif 647 648 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 649 /* Compare version strings. */ 650 extern int strverscmp (const char *, const char *); 651 #endif 652 653 /* Set the title of a process */ 654 extern void setproctitle (const char *name, ...); 655 656 /* Increase stack limit if possible. */ 657 extern void stack_limit_increase (unsigned long); 658 659 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 660 661 /* Drastically simplified alloca configurator. If we're using GCC, 662 we use __builtin_alloca; otherwise we use the C alloca. The C 663 alloca is always available. You can override GCC by defining 664 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is 665 also set/unset as it is often used to indicate whether code needs 666 to call alloca(0). */ 667 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; 668 #undef alloca 669 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA 670 # define alloca(x) __builtin_alloca(x) 671 # undef C_ALLOCA 672 # define ASTRDUP(X) \ 673 (__extension__ ({ const char *const libiberty_optr = (X); \ 674 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ 675 char *const libiberty_nptr = (char *const) alloca (libiberty_len); \ 676 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) 677 #else 678 # define alloca(x) C_alloca(x) 679 # undef USE_C_ALLOCA 680 # define USE_C_ALLOCA 1 681 # undef C_ALLOCA 682 # define C_ALLOCA 1 683 extern const char *libiberty_optr; 684 extern char *libiberty_nptr; 685 extern unsigned long libiberty_len; 686 # define ASTRDUP(X) \ 687 (libiberty_optr = (X), \ 688 libiberty_len = strlen (libiberty_optr) + 1, \ 689 libiberty_nptr = (char *) alloca (libiberty_len), \ 690 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) 691 #endif 692 693 #ifdef __cplusplus 694 } 695 #endif 696 697 698 #endif /* ! defined (LIBIBERTY_H) */ 699
