1 /* Function declarations for libiberty. 2 3 Copyright (C) 1997-2019 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 /* Return a temporary file name with given PREFIX and SUFFIX 243 or NULL if unable to create one. */ 244 245 extern char *make_temp_file_with_prefix (const char *, const char *) ATTRIBUTE_MALLOC; 246 247 /* Remove a link to a file unless it is special. */ 248 249 extern int unlink_if_ordinary (const char *); 250 251 /* Allocate memory filled with spaces. Allocates using malloc. */ 252 253 extern const char *spaces (int count); 254 255 /* Return the maximum error number for which strerror will return a 256 string. */ 257 258 extern int errno_max (void); 259 260 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns 261 "EINVAL"). */ 262 263 extern const char *strerrno (int); 264 265 /* Given the name of an errno value, return the value. */ 266 267 extern int strtoerrno (const char *); 268 269 /* ANSI's strerror(), but more robust. */ 270 271 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL; 272 273 /* Return the maximum signal number for which strsignal will return a 274 string. */ 275 276 extern int signo_max (void); 277 278 /* Return a signal message string for a signal number 279 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ 280 /* This is commented out as it can conflict with one in system headers. 281 We still document its existence though. */ 282 283 /*extern const char *strsignal (int);*/ 284 285 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns 286 "SIGHUP"). */ 287 288 extern const char *strsigno (int); 289 290 /* Given the name of a signal, return its number. */ 291 292 extern int strtosigno (const char *); 293 294 /* Register a function to be run by xexit. Returns 0 on success. */ 295 296 extern int xatexit (void (*fn) (void)); 297 298 /* Exit, calling all the functions registered with xatexit. */ 299 300 extern void xexit (int status) ATTRIBUTE_NORETURN; 301 302 /* Set the program name used by xmalloc. */ 303 304 extern void xmalloc_set_program_name (const char *); 305 306 /* Report an allocation failure. */ 307 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; 308 309 /* Allocate memory without fail. If malloc fails, this will print a 310 message to stderr (using the name set by xmalloc_set_program_name, 311 if any) and then call xexit. */ 312 313 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 314 315 /* Reallocate memory without fail. This works like xmalloc. Note, 316 realloc type functions are not suitable for attribute malloc since 317 they may return the same address across multiple calls. */ 318 319 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL; 320 321 /* Allocate memory without fail and set it to zero. This works like 322 xmalloc. */ 323 324 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 325 326 /* Copy a string into a memory buffer without fail. */ 327 328 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 329 330 /* Copy at most N characters from string into a buffer without fail. */ 331 332 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 333 334 /* Copy an existing memory buffer to a new memory buffer without fail. */ 335 336 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 337 338 /* Physical memory routines. Return values are in BYTES. */ 339 extern double physmem_total (void); 340 extern double physmem_available (void); 341 342 /* Compute the 32-bit CRC of a block of memory. */ 343 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int); 344 345 /* These macros provide a K&R/C89/C++-friendly way of allocating structures 346 with nice encapsulation. The XDELETE*() macros are technically 347 superfluous, but provided here for symmetry. Using them consistently 348 makes it easier to update client code to use different allocators such 349 as new/delete and new[]/delete[]. */ 350 351 /* Scalar allocators. */ 352 353 #define XALLOCA(T) ((T *) alloca (sizeof (T))) 354 #define XNEW(T) ((T *) xmalloc (sizeof (T))) 355 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) 356 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T))) 357 #define XDELETE(P) free ((void*) (P)) 358 359 /* Array allocators. */ 360 361 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N))) 362 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) 363 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) 364 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N))) 365 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) 366 #define XDELETEVEC(P) free ((void*) (P)) 367 368 /* Allocators for variable-sized structures and raw buffers. */ 369 370 #define XALLOCAVAR(T, S) ((T *) alloca ((S))) 371 #define XNEWVAR(T, S) ((T *) xmalloc ((S))) 372 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) 373 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2))) 374 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) 375 376 /* Type-safe obstack allocator. */ 377 378 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) 379 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N))) 380 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S))) 381 #define XOBFINISH(O, T) ((T) obstack_finish ((O))) 382 383 /* hex character manipulation routines */ 384 385 #define _hex_array_size 256 386 #define _hex_bad 99 387 extern const unsigned char _hex_value[_hex_array_size]; 388 extern void hex_init (void); 389 #define hex_p(c) (hex_value (c) != _hex_bad) 390 /* If you change this, note well: Some code relies on side effects in 391 the argument being performed exactly once. */ 392 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) 393 394 /* Flags for pex_init. These are bits to be or'ed together. */ 395 396 /* Record subprocess times, if possible. */ 397 #define PEX_RECORD_TIMES 0x1 398 399 /* Use pipes for communication between processes, if possible. */ 400 #define PEX_USE_PIPES 0x2 401 402 /* Save files used for communication between processes. */ 403 #define PEX_SAVE_TEMPS 0x4 404 405 /* Max number of alloca bytes per call before we must switch to malloc. 406 407 ?? Swiped from gnulib's regex_internal.h header. Is this actually 408 the case? This number seems arbitrary, though sane. 409 410 The OS usually guarantees only one guard page at the bottom of the stack, 411 and a page size can be as small as 4096 bytes. So we cannot safely 412 allocate anything larger than 4096 bytes. Also care for the possibility 413 of a few compiler-allocated temporary stack slots. */ 414 #define MAX_ALLOCA_SIZE 4032 415 416 /* Prepare to execute one or more programs, with standard output of 417 each program fed to standard input of the next. 418 FLAGS As above. 419 PNAME The name of the program to report in error messages. 420 TEMPBASE A base name to use for temporary files; may be NULL to 421 use a random name. 422 Returns NULL on error. */ 423 424 extern struct pex_obj *pex_init (int flags, const char *pname, 425 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL; 426 427 /* Flags for pex_run. These are bits to be or'ed together. */ 428 429 /* Last program in pipeline. Standard output of program goes to 430 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do 431 not set this if you want to call pex_read_output. After this is 432 set, pex_run may no longer be called with the same struct 433 pex_obj. */ 434 #define PEX_LAST 0x1 435 436 /* Search for program in executable search path. */ 437 #define PEX_SEARCH 0x2 438 439 /* OUTNAME is a suffix. */ 440 #define PEX_SUFFIX 0x4 441 442 /* Send program's standard error to standard output. */ 443 #define PEX_STDERR_TO_STDOUT 0x8 444 445 /* Input file should be opened in binary mode. This flag is ignored 446 on Unix. */ 447 #define PEX_BINARY_INPUT 0x10 448 449 /* Output file should be opened in binary mode. This flag is ignored 450 on Unix. For proper behaviour PEX_BINARY_INPUT and 451 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using 452 PEX_BINARY_OUTPUT should be followed by a call using 453 PEX_BINARY_INPUT. */ 454 #define PEX_BINARY_OUTPUT 0x20 455 456 /* Capture stderr to a pipe. The output can be read by 457 calling pex_read_err and reading from the returned 458 FILE object. This flag may be specified only for 459 the last program in a pipeline. 460 461 This flag is supported only on Unix and Windows. */ 462 #define PEX_STDERR_TO_PIPE 0x40 463 464 /* Capture stderr in binary mode. This flag is ignored 465 on Unix. */ 466 #define PEX_BINARY_ERROR 0x80 467 468 /* Append stdout to existing file instead of truncating it. */ 469 #define PEX_STDOUT_APPEND 0x100 470 471 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */ 472 #define PEX_STDERR_APPEND 0x200 473 474 /* Execute one program. Returns NULL on success. On error returns an 475 error string (typically just the name of a system call); the error 476 string is statically allocated. 477 478 OBJ Returned by pex_init. 479 480 FLAGS As above. 481 482 EXECUTABLE The program to execute. 483 484 ARGV NULL terminated array of arguments to pass to the program. 485 486 OUTNAME Sets the output file name as follows: 487 488 PEX_SUFFIX set (OUTNAME may not be NULL): 489 TEMPBASE parameter to pex_init not NULL: 490 Output file name is the concatenation of TEMPBASE 491 and OUTNAME. 492 TEMPBASE is NULL: 493 Output file name is a random file name ending in 494 OUTNAME. 495 PEX_SUFFIX not set: 496 OUTNAME not NULL: 497 Output file name is OUTNAME. 498 OUTNAME NULL, TEMPBASE not NULL: 499 Output file name is randomly chosen using 500 TEMPBASE. 501 OUTNAME NULL, TEMPBASE NULL: 502 Output file name is randomly chosen. 503 504 If PEX_LAST is not set, the output file name is the 505 name to use for a temporary file holding stdout, if 506 any (there will not be a file if PEX_USE_PIPES is set 507 and the system supports pipes). If a file is used, it 508 will be removed when no longer needed unless 509 PEX_SAVE_TEMPS is set. 510 511 If PEX_LAST is set, and OUTNAME is not NULL, standard 512 output is written to the output file name. The file 513 will not be removed. If PEX_LAST and PEX_SUFFIX are 514 both set, TEMPBASE may not be NULL. 515 516 ERRNAME If not NULL, this is the name of a file to which 517 standard error is written. If NULL, standard error of 518 the program is standard error of the caller. 519 520 ERR On an error return, *ERR is set to an errno value, or 521 to 0 if there is no relevant errno. 522 */ 523 524 extern const char *pex_run (struct pex_obj *obj, int flags, 525 const char *executable, char * const *argv, 526 const char *outname, const char *errname, 527 int *err); 528 529 /* As for pex_run (), but takes an extra parameter to enable the 530 environment for the child process to be specified. 531 532 ENV The environment for the child process, specified as 533 an array of character pointers. Each element of the 534 array should point to a string of the form VAR=VALUE, 535 with the exception of the last element which must be 536 a null pointer. 537 */ 538 539 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, 540 const char *executable, 541 char * const *argv, 542 char * const *env, 543 const char *outname, 544 const char *errname, int *err); 545 546 /* Return a stream for a temporary file to pass to the first program 547 in the pipeline as input. The file name is chosen as for pex_run. 548 pex_run closes the file automatically; don't close it yourself. */ 549 550 extern FILE *pex_input_file (struct pex_obj *obj, int flags, 551 const char *in_name); 552 553 /* Return a stream for a pipe connected to the standard input of the 554 first program in the pipeline. You must have passed 555 `PEX_USE_PIPES' to `pex_init'. Close the returned stream 556 yourself. */ 557 558 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); 559 560 /* Read the standard output of the last program to be executed. 561 pex_run cannot be called after this. BINARY should be non-zero if 562 the file should be opened in binary mode; this is ignored on Unix. 563 Returns NULL on error. Don't call fclose on the returned FILE; it 564 will be closed by pex_free. */ 565 566 extern FILE *pex_read_output (struct pex_obj *, int binary); 567 568 /* Read the standard error of the last program to be executed. 569 pex_run cannot be called after this. BINARY should be non-zero if 570 the file should be opened in binary mode; this is ignored on Unix. 571 Returns NULL on error. Don't call fclose on the returned FILE; it 572 will be closed by pex_free. */ 573 574 extern FILE *pex_read_err (struct pex_obj *, int binary); 575 576 /* Return exit status of all programs in VECTOR. COUNT indicates the 577 size of VECTOR. The status codes in the vector are in the order of 578 the calls to pex_run. Returns 0 on error, 1 on success. */ 579 580 extern int pex_get_status (struct pex_obj *, int count, int *vector); 581 582 /* Return times of all programs in VECTOR. COUNT indicates the size 583 of VECTOR. struct pex_time is really just struct timeval, but that 584 is not portable to all systems. Returns 0 on error, 1 on 585 success. */ 586 587 struct pex_time 588 { 589 unsigned long user_seconds; 590 unsigned long user_microseconds; 591 unsigned long system_seconds; 592 unsigned long system_microseconds; 593 }; 594 595 extern int pex_get_times (struct pex_obj *, int count, 596 struct pex_time *vector); 597 598 /* Clean up a pex_obj. If you have not called pex_get_times or 599 pex_get_status, this will try to kill the subprocesses. */ 600 601 extern void pex_free (struct pex_obj *); 602 603 /* Just execute one program. Return value is as for pex_run. 604 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. 605 EXECUTABLE As for pex_run. 606 ARGV As for pex_run. 607 PNAME As for pex_init. 608 OUTNAME As for pex_run when PEX_LAST is set. 609 ERRNAME As for pex_run. 610 STATUS Set to exit status on success. 611 ERR As for pex_run. 612 */ 613 614 extern const char *pex_one (int flags, const char *executable, 615 char * const *argv, const char *pname, 616 const char *outname, const char *errname, 617 int *status, int *err); 618 619 /* pexecute and pwait are the old pexecute interface, still here for 620 backward compatibility. Don't use these for new code. Instead, 621 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ 622 623 /* Definitions used by the pexecute routine. */ 624 625 #define PEXECUTE_FIRST 1 626 #define PEXECUTE_LAST 2 627 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) 628 #define PEXECUTE_SEARCH 4 629 #define PEXECUTE_VERBOSE 8 630 631 /* Execute a program. */ 632 633 extern int pexecute (const char *, char * const *, const char *, 634 const char *, char **, char **, int); 635 636 /* Wait for pexecute to finish. */ 637 638 extern int pwait (int, int *, int); 639 640 #if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF 641 /* Like sprintf but provides a pointer to malloc'd storage, which must 642 be freed by the caller. */ 643 644 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; 645 #endif 646 647 /* Like asprintf but allocates memory without fail. This works like 648 xmalloc. */ 649 650 extern char *xasprintf (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF_1; 651 652 #if !HAVE_DECL_VASPRINTF 653 /* Like vsprintf but provides a pointer to malloc'd storage, which 654 must be freed by the caller. */ 655 656 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); 657 #endif 658 659 /* Like vasprintf but allocates memory without fail. This works like 660 xmalloc. */ 661 662 extern char *xvasprintf (const char *, va_list) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF(1,0); 663 664 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 665 /* Like sprintf but prints at most N characters. */ 666 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; 667 #endif 668 669 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 670 /* Like vsprintf but prints at most N characters. */ 671 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); 672 #endif 673 674 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN 675 extern size_t strnlen (const char *, size_t); 676 #endif 677 678 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 679 /* Compare version strings. */ 680 extern int strverscmp (const char *, const char *); 681 #endif 682 683 #if defined(HAVE_DECL_STRTOL) && !HAVE_DECL_STRTOL 684 extern long int strtol (const char *nptr, 685 char **endptr, int base); 686 #endif 687 688 #if defined(HAVE_DECL_STRTOUL) && !HAVE_DECL_STRTOUL 689 extern unsigned long int strtoul (const char *nptr, 690 char **endptr, int base); 691 #endif 692 693 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOLL) && !HAVE_DECL_STRTOLL 694 __extension__ 695 extern long long int strtoll (const char *nptr, 696 char **endptr, int base); 697 #endif 698 699 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOULL) && !HAVE_DECL_STRTOULL 700 __extension__ 701 extern unsigned long long int strtoull (const char *nptr, 702 char **endptr, int base); 703 #endif 704 705 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 706 /* Compare version strings. */ 707 extern int strverscmp (const char *, const char *); 708 #endif 709 710 /* Set the title of a process */ 711 extern void setproctitle (const char *name, ...); 712 713 /* Increase stack limit if possible. */ 714 extern void stack_limit_increase (unsigned long); 715 716 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 717 718 /* Drastically simplified alloca configurator. If we're using GCC, 719 we use __builtin_alloca; otherwise we use the C alloca. The C 720 alloca is always available. You can override GCC by defining 721 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is 722 also set/unset as it is often used to indicate whether code needs 723 to call alloca(0). */ 724 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; 725 #undef alloca 726 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA 727 # define alloca(x) __builtin_alloca(x) 728 # undef C_ALLOCA 729 # define ASTRDUP(X) \ 730 (__extension__ ({ const char *const libiberty_optr = (X); \ 731 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ 732 char *const libiberty_nptr = (char *) alloca (libiberty_len); \ 733 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) 734 #else 735 # define alloca(x) C_alloca(x) 736 # undef USE_C_ALLOCA 737 # define USE_C_ALLOCA 1 738 # undef C_ALLOCA 739 # define C_ALLOCA 1 740 extern const char *libiberty_optr; 741 extern char *libiberty_nptr; 742 extern unsigned long libiberty_len; 743 # define ASTRDUP(X) \ 744 (libiberty_optr = (X), \ 745 libiberty_len = strlen (libiberty_optr) + 1, \ 746 libiberty_nptr = (char *) alloca (libiberty_len), \ 747 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) 748 #endif 749 750 #ifdef __cplusplus 751 } 752 #endif 753 754 755 #endif /* ! defined (LIBIBERTY_H) */ 756