1 /* Function declarations for libiberty. 2 3 Copyright (C) 1997-2020 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 /* Return true when FD file descriptor exists. */ 141 142 extern int is_valid_fd (int fd); 143 144 /* Concatenate an arbitrary number of strings. You must pass NULL as 145 the last argument of this function, to terminate the list of 146 strings. Allocates memory using xmalloc. */ 147 148 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 149 150 /* Concatenate an arbitrary number of strings. You must pass NULL as 151 the last argument of this function, to terminate the list of 152 strings. Allocates memory using xmalloc. The first argument is 153 not one of the strings to be concatenated, but if not NULL is a 154 pointer to be freed after the new string is created, similar to the 155 way xrealloc works. */ 156 157 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 158 159 /* Determine the length of concatenating an arbitrary number of 160 strings. You must pass NULL as the last argument of this function, 161 to terminate the list of strings. */ 162 163 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; 164 165 /* Concatenate an arbitrary number of strings into a SUPPLIED area of 166 memory. You must pass NULL as the last argument of this function, 167 to terminate the list of strings. The supplied memory is assumed 168 to be large enough. */ 169 170 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL; 171 172 /* Concatenate an arbitrary number of strings into a GLOBAL area of 173 memory. You must pass NULL as the last argument of this function, 174 to terminate the list of strings. The supplied memory is assumed 175 to be large enough. */ 176 177 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; 178 179 /* This is the global area used by concat_copy2. */ 180 181 extern char *libiberty_concat_ptr; 182 183 /* Concatenate an arbitrary number of strings. You must pass NULL as 184 the last argument of this function, to terminate the list of 185 strings. Allocates memory using alloca. The arguments are 186 evaluated twice! */ 187 #define ACONCAT(ACONCAT_PARAMS) \ 188 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \ 189 concat_copy2 ACONCAT_PARAMS) 190 191 /* Check whether two file descriptors refer to the same file. */ 192 193 extern int fdmatch (int fd1, int fd2); 194 195 /* Return the position of the first bit set in the argument. */ 196 /* Prototypes vary from system to system, so we only provide a 197 prototype on systems where we know that we need it. */ 198 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS 199 extern int ffs(int); 200 #endif 201 202 /* Get the working directory. The result is cached, so don't call 203 chdir() between calls to getpwd(). */ 204 205 extern char * getpwd (void); 206 207 /* Get the current time. */ 208 /* Prototypes vary from system to system, so we only provide a 209 prototype on systems where we know that we need it. */ 210 #ifdef __MINGW32__ 211 /* Forward declaration to avoid #include <sys/time.h>. */ 212 struct timeval; 213 extern int gettimeofday (struct timeval *, void *); 214 #endif 215 216 /* Get the amount of time the process has run, in microseconds. */ 217 218 extern long get_run_time (void); 219 220 /* Generate a relocated path to some installation directory. Allocates 221 return value using malloc. */ 222 223 extern char *make_relative_prefix (const char *, const char *, 224 const char *) ATTRIBUTE_MALLOC; 225 226 /* Generate a relocated path to some installation directory without 227 attempting to follow any soft links. Allocates 228 return value using malloc. */ 229 230 extern char *make_relative_prefix_ignore_links (const char *, const char *, 231 const char *) ATTRIBUTE_MALLOC; 232 233 /* Returns a pointer to a directory path suitable for creating temporary 234 files in. */ 235 236 extern const char *choose_tmpdir (void) ATTRIBUTE_RETURNS_NONNULL; 237 238 /* Choose a temporary directory to use for scratch files. */ 239 240 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; 241 242 /* Return a temporary file name or NULL if unable to create one. */ 243 244 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; 245 246 /* Return a temporary file name with given PREFIX and SUFFIX 247 or NULL if unable to create one. */ 248 249 extern char *make_temp_file_with_prefix (const char *, const char *) ATTRIBUTE_MALLOC; 250 251 /* Remove a link to a file unless it is special. */ 252 253 extern int unlink_if_ordinary (const char *); 254 255 /* Allocate memory filled with spaces. Allocates using malloc. */ 256 257 extern const char *spaces (int count); 258 259 /* Return the maximum error number for which strerror will return a 260 string. */ 261 262 extern int errno_max (void); 263 264 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns 265 "EINVAL"). */ 266 267 extern const char *strerrno (int); 268 269 /* Given the name of an errno value, return the value. */ 270 271 extern int strtoerrno (const char *); 272 273 /* ANSI's strerror(), but more robust. */ 274 275 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL; 276 277 /* Return the maximum signal number for which strsignal will return a 278 string. */ 279 280 extern int signo_max (void); 281 282 /* Return a signal message string for a signal number 283 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ 284 /* This is commented out as it can conflict with one in system headers. 285 We still document its existence though. */ 286 287 /*extern const char *strsignal (int);*/ 288 289 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns 290 "SIGHUP"). */ 291 292 extern const char *strsigno (int); 293 294 /* Given the name of a signal, return its number. */ 295 296 extern int strtosigno (const char *); 297 298 /* Register a function to be run by xexit. Returns 0 on success. */ 299 300 extern int xatexit (void (*fn) (void)); 301 302 /* Exit, calling all the functions registered with xatexit. */ 303 304 extern void xexit (int status) ATTRIBUTE_NORETURN; 305 306 /* Set the program name used by xmalloc. */ 307 308 extern void xmalloc_set_program_name (const char *); 309 310 /* Report an allocation failure. */ 311 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; 312 313 /* Allocate memory without fail. If malloc fails, this will print a 314 message to stderr (using the name set by xmalloc_set_program_name, 315 if any) and then call xexit. */ 316 317 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1 ATTRIBUTE_WARN_UNUSED_RESULT; 318 319 /* Reallocate memory without fail. This works like xmalloc. Note, 320 realloc type functions are not suitable for attribute malloc since 321 they may return the same address across multiple calls. */ 322 323 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_2 ATTRIBUTE_WARN_UNUSED_RESULT; 324 325 /* Allocate memory without fail and set it to zero. This works like 326 xmalloc. */ 327 328 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1_2 ATTRIBUTE_WARN_UNUSED_RESULT; 329 330 /* Copy a string into a memory buffer without fail. */ 331 332 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; 333 334 /* Copy at most N characters from string into a buffer without fail. */ 335 336 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; 337 338 /* Copy an existing memory buffer to a new memory buffer without fail. */ 339 340 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; 341 342 /* Physical memory routines. Return values are in BYTES. */ 343 extern double physmem_total (void); 344 extern double physmem_available (void); 345 346 /* Compute the 32-bit CRC of a block of memory. */ 347 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int); 348 349 /* These macros provide a K&R/C89/C++-friendly way of allocating structures 350 with nice encapsulation. The XDELETE*() macros are technically 351 superfluous, but provided here for symmetry. Using them consistently 352 makes it easier to update client code to use different allocators such 353 as new/delete and new[]/delete[]. */ 354 355 /* Scalar allocators. */ 356 357 #define XALLOCA(T) ((T *) alloca (sizeof (T))) 358 #define XNEW(T) ((T *) xmalloc (sizeof (T))) 359 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) 360 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T))) 361 #define XDELETE(P) free ((void*) (P)) 362 363 /* Array allocators. */ 364 365 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N))) 366 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) 367 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) 368 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N))) 369 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) 370 #define XDELETEVEC(P) free ((void*) (P)) 371 372 /* Allocators for variable-sized structures and raw buffers. */ 373 374 #define XALLOCAVAR(T, S) ((T *) alloca ((S))) 375 #define XNEWVAR(T, S) ((T *) xmalloc ((S))) 376 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) 377 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2))) 378 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) 379 380 /* Type-safe obstack allocator. */ 381 382 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) 383 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N))) 384 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S))) 385 #define XOBFINISH(O, T) ((T) obstack_finish ((O))) 386 387 /* hex character manipulation routines */ 388 389 #define _hex_array_size 256 390 #define _hex_bad 99 391 extern const unsigned char _hex_value[_hex_array_size]; 392 extern void hex_init (void); 393 #define hex_p(c) (hex_value (c) != _hex_bad) 394 /* If you change this, note well: Some code relies on side effects in 395 the argument being performed exactly once. */ 396 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) 397 398 /* Flags for pex_init. These are bits to be or'ed together. */ 399 400 /* Record subprocess times, if possible. */ 401 #define PEX_RECORD_TIMES 0x1 402 403 /* Use pipes for communication between processes, if possible. */ 404 #define PEX_USE_PIPES 0x2 405 406 /* Save files used for communication between processes. */ 407 #define PEX_SAVE_TEMPS 0x4 408 409 /* Max number of alloca bytes per call before we must switch to malloc. 410 411 ?? Swiped from gnulib's regex_internal.h header. Is this actually 412 the case? This number seems arbitrary, though sane. 413 414 The OS usually guarantees only one guard page at the bottom of the stack, 415 and a page size can be as small as 4096 bytes. So we cannot safely 416 allocate anything larger than 4096 bytes. Also care for the possibility 417 of a few compiler-allocated temporary stack slots. */ 418 #define MAX_ALLOCA_SIZE 4032 419 420 /* Prepare to execute one or more programs, with standard output of 421 each program fed to standard input of the next. 422 FLAGS As above. 423 PNAME The name of the program to report in error messages. 424 TEMPBASE A base name to use for temporary files; may be NULL to 425 use a random name. 426 Returns NULL on error. */ 427 428 extern struct pex_obj *pex_init (int flags, const char *pname, 429 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL; 430 431 /* Flags for pex_run. These are bits to be or'ed together. */ 432 433 /* Last program in pipeline. Standard output of program goes to 434 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do 435 not set this if you want to call pex_read_output. After this is 436 set, pex_run may no longer be called with the same struct 437 pex_obj. */ 438 #define PEX_LAST 0x1 439 440 /* Search for program in executable search path. */ 441 #define PEX_SEARCH 0x2 442 443 /* OUTNAME is a suffix. */ 444 #define PEX_SUFFIX 0x4 445 446 /* Send program's standard error to standard output. */ 447 #define PEX_STDERR_TO_STDOUT 0x8 448 449 /* Input file should be opened in binary mode. This flag is ignored 450 on Unix. */ 451 #define PEX_BINARY_INPUT 0x10 452 453 /* Output file should be opened in binary mode. This flag is ignored 454 on Unix. For proper behaviour PEX_BINARY_INPUT and 455 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using 456 PEX_BINARY_OUTPUT should be followed by a call using 457 PEX_BINARY_INPUT. */ 458 #define PEX_BINARY_OUTPUT 0x20 459 460 /* Capture stderr to a pipe. The output can be read by 461 calling pex_read_err and reading from the returned 462 FILE object. This flag may be specified only for 463 the last program in a pipeline. 464 465 This flag is supported only on Unix and Windows. */ 466 #define PEX_STDERR_TO_PIPE 0x40 467 468 /* Capture stderr in binary mode. This flag is ignored 469 on Unix. */ 470 #define PEX_BINARY_ERROR 0x80 471 472 /* Append stdout to existing file instead of truncating it. */ 473 #define PEX_STDOUT_APPEND 0x100 474 475 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */ 476 #define PEX_STDERR_APPEND 0x200 477 478 /* Execute one program. Returns NULL on success. On error returns an 479 error string (typically just the name of a system call); the error 480 string is statically allocated. 481 482 OBJ Returned by pex_init. 483 484 FLAGS As above. 485 486 EXECUTABLE The program to execute. 487 488 ARGV NULL terminated array of arguments to pass to the program. 489 490 OUTNAME Sets the output file name as follows: 491 492 PEX_SUFFIX set (OUTNAME may not be NULL): 493 TEMPBASE parameter to pex_init not NULL: 494 Output file name is the concatenation of TEMPBASE 495 and OUTNAME. 496 TEMPBASE is NULL: 497 Output file name is a random file name ending in 498 OUTNAME. 499 PEX_SUFFIX not set: 500 OUTNAME not NULL: 501 Output file name is OUTNAME. 502 OUTNAME NULL, TEMPBASE not NULL: 503 Output file name is randomly chosen using 504 TEMPBASE. 505 OUTNAME NULL, TEMPBASE NULL: 506 Output file name is randomly chosen. 507 508 If PEX_LAST is not set, the output file name is the 509 name to use for a temporary file holding stdout, if 510 any (there will not be a file if PEX_USE_PIPES is set 511 and the system supports pipes). If a file is used, it 512 will be removed when no longer needed unless 513 PEX_SAVE_TEMPS is set. 514 515 If PEX_LAST is set, and OUTNAME is not NULL, standard 516 output is written to the output file name. The file 517 will not be removed. If PEX_LAST and PEX_SUFFIX are 518 both set, TEMPBASE may not be NULL. 519 520 ERRNAME If not NULL, this is the name of a file to which 521 standard error is written. If NULL, standard error of 522 the program is standard error of the caller. 523 524 ERR On an error return, *ERR is set to an errno value, or 525 to 0 if there is no relevant errno. 526 */ 527 528 extern const char *pex_run (struct pex_obj *obj, int flags, 529 const char *executable, char * const *argv, 530 const char *outname, const char *errname, 531 int *err); 532 533 /* As for pex_run (), but takes an extra parameter to enable the 534 environment for the child process to be specified. 535 536 ENV The environment for the child process, specified as 537 an array of character pointers. Each element of the 538 array should point to a string of the form VAR=VALUE, 539 with the exception of the last element which must be 540 a null pointer. 541 */ 542 543 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, 544 const char *executable, 545 char * const *argv, 546 char * const *env, 547 const char *outname, 548 const char *errname, int *err); 549 550 /* Return a stream for a temporary file to pass to the first program 551 in the pipeline as input. The file name is chosen as for pex_run. 552 pex_run closes the file automatically; don't close it yourself. */ 553 554 extern FILE *pex_input_file (struct pex_obj *obj, int flags, 555 const char *in_name); 556 557 /* Return a stream for a pipe connected to the standard input of the 558 first program in the pipeline. You must have passed 559 `PEX_USE_PIPES' to `pex_init'. Close the returned stream 560 yourself. */ 561 562 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); 563 564 /* Read the standard output of the last program to be executed. 565 pex_run cannot be called after this. BINARY should be non-zero if 566 the file should be opened in binary mode; this is ignored on Unix. 567 Returns NULL on error. Don't call fclose on the returned FILE; it 568 will be closed by pex_free. */ 569 570 extern FILE *pex_read_output (struct pex_obj *, int binary); 571 572 /* Read the standard error of the last program to be executed. 573 pex_run cannot be called after this. BINARY should be non-zero if 574 the file should be opened in binary mode; this is ignored on Unix. 575 Returns NULL on error. Don't call fclose on the returned FILE; it 576 will be closed by pex_free. */ 577 578 extern FILE *pex_read_err (struct pex_obj *, int binary); 579 580 /* Return exit status of all programs in VECTOR. COUNT indicates the 581 size of VECTOR. The status codes in the vector are in the order of 582 the calls to pex_run. Returns 0 on error, 1 on success. */ 583 584 extern int pex_get_status (struct pex_obj *, int count, int *vector); 585 586 /* Return times of all programs in VECTOR. COUNT indicates the size 587 of VECTOR. struct pex_time is really just struct timeval, but that 588 is not portable to all systems. Returns 0 on error, 1 on 589 success. */ 590 591 struct pex_time 592 { 593 unsigned long user_seconds; 594 unsigned long user_microseconds; 595 unsigned long system_seconds; 596 unsigned long system_microseconds; 597 }; 598 599 extern int pex_get_times (struct pex_obj *, int count, 600 struct pex_time *vector); 601 602 /* Clean up a pex_obj. If you have not called pex_get_times or 603 pex_get_status, this will try to kill the subprocesses. */ 604 605 extern void pex_free (struct pex_obj *); 606 607 /* Just execute one program. Return value is as for pex_run. 608 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. 609 EXECUTABLE As for pex_run. 610 ARGV As for pex_run. 611 PNAME As for pex_init. 612 OUTNAME As for pex_run when PEX_LAST is set. 613 ERRNAME As for pex_run. 614 STATUS Set to exit status on success. 615 ERR As for pex_run. 616 */ 617 618 extern const char *pex_one (int flags, const char *executable, 619 char * const *argv, const char *pname, 620 const char *outname, const char *errname, 621 int *status, int *err); 622 623 /* pexecute and pwait are the old pexecute interface, still here for 624 backward compatibility. Don't use these for new code. Instead, 625 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ 626 627 /* Definitions used by the pexecute routine. */ 628 629 #define PEXECUTE_FIRST 1 630 #define PEXECUTE_LAST 2 631 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) 632 #define PEXECUTE_SEARCH 4 633 #define PEXECUTE_VERBOSE 8 634 635 /* Execute a program. */ 636 637 extern int pexecute (const char *, char * const *, const char *, 638 const char *, char **, char **, int); 639 640 /* Wait for pexecute to finish. */ 641 642 extern int pwait (int, int *, int); 643 644 #if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF 645 /* Like sprintf but provides a pointer to malloc'd storage, which must 646 be freed by the caller. */ 647 648 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; 649 #endif 650 651 /* Like asprintf but allocates memory without fail. This works like 652 xmalloc. */ 653 654 extern char *xasprintf (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF_1; 655 656 #if defined(HAVE_DECL_VASPRINTF) && !HAVE_DECL_VASPRINTF 657 /* Like vsprintf but provides a pointer to malloc'd storage, which 658 must be freed by the caller. */ 659 660 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); 661 #endif 662 663 /* Like vasprintf but allocates memory without fail. This works like 664 xmalloc. */ 665 666 extern char *xvasprintf (const char *, va_list) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF(1,0); 667 668 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 669 /* Like sprintf but prints at most N characters. */ 670 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; 671 #endif 672 673 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 674 /* Like vsprintf but prints at most N characters. */ 675 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); 676 #endif 677 678 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN 679 extern size_t strnlen (const char *, size_t); 680 #endif 681 682 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 683 /* Compare version strings. */ 684 extern int strverscmp (const char *, const char *); 685 #endif 686 687 #if defined(HAVE_DECL_STRTOL) && !HAVE_DECL_STRTOL 688 extern long int strtol (const char *nptr, 689 char **endptr, int base); 690 #endif 691 692 #if defined(HAVE_DECL_STRTOUL) && !HAVE_DECL_STRTOUL 693 extern unsigned long int strtoul (const char *nptr, 694 char **endptr, int base); 695 #endif 696 697 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOLL) && !HAVE_DECL_STRTOLL 698 __extension__ 699 extern long long int strtoll (const char *nptr, 700 char **endptr, int base); 701 #endif 702 703 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOULL) && !HAVE_DECL_STRTOULL 704 __extension__ 705 extern unsigned long long int strtoull (const char *nptr, 706 char **endptr, int base); 707 #endif 708 709 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 710 /* Compare version strings. */ 711 extern int strverscmp (const char *, const char *); 712 #endif 713 714 /* Set the title of a process */ 715 extern void setproctitle (const char *name, ...); 716 717 /* Increase stack limit if possible. */ 718 extern void stack_limit_increase (unsigned long); 719 720 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 721 722 /* Drastically simplified alloca configurator. If we're using GCC, 723 we use __builtin_alloca; otherwise we use the C alloca. The C 724 alloca is always available. You can override GCC by defining 725 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is 726 also set/unset as it is often used to indicate whether code needs 727 to call alloca(0). */ 728 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; 729 #undef alloca 730 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA 731 # define alloca(x) __builtin_alloca(x) 732 # undef C_ALLOCA 733 # define ASTRDUP(X) \ 734 (__extension__ ({ const char *const libiberty_optr = (X); \ 735 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ 736 char *const libiberty_nptr = (char *) alloca (libiberty_len); \ 737 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) 738 #else 739 # define alloca(x) C_alloca(x) 740 # undef USE_C_ALLOCA 741 # define USE_C_ALLOCA 1 742 # undef C_ALLOCA 743 # define C_ALLOCA 1 744 extern const char *libiberty_optr; 745 extern char *libiberty_nptr; 746 extern unsigned long libiberty_len; 747 # define ASTRDUP(X) \ 748 (libiberty_optr = (X), \ 749 libiberty_len = strlen (libiberty_optr) + 1, \ 750 libiberty_nptr = (char *) alloca (libiberty_len), \ 751 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) 752 #endif 753 754 #ifdef __cplusplus 755 } 756 #endif 757 758 759 #endif /* ! defined (LIBIBERTY_H) */ 760