Changeset 988 for vendor/current/lib/util/util.h
- Timestamp:
- Nov 24, 2016, 1:14:11 PM (9 years ago)
- File:
-
- 1 edited
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vendor/current/lib/util/util.h
r740 r988 19 19 */ 20 20 21 #ifndef _SAMBA_UTIL_H_ 22 #define _SAMBA_UTIL_H_ 23 24 #include "lib/util/charset/charset.h" 25 #include "lib/util/attr.h" 26 27 /* for TALLOC_CTX */ 28 #include <talloc.h> 29 30 /** 31 * @file 32 * @brief Helpful macros 33 */ 34 35 struct smbsrv_tcon; 36 37 extern const char *logfile; 38 extern const char *panic_action; 39 40 #include "lib/util/time.h" 41 #include "lib/util/data_blob.h" 42 #include "lib/util/xfile.h" 43 #include "lib/util/byteorder.h" 44 #include "lib/util/talloc_stack.h" 45 46 /** 47 * assert macros 48 */ 49 #ifdef DEVELOPER 50 #define SMB_ASSERT(b) do { if (!(b)) { \ 51 DEBUG(0,("PANIC: assert failed at %s(%d): %s\n", \ 52 __FILE__, __LINE__, #b)); smb_panic("assert failed: " #b); }} while(0) 53 #else 54 /* redefine the assert macro for non-developer builds */ 55 #define SMB_ASSERT(b) do { if (!(b)) { \ 56 DEBUG(0,("PANIC: assert failed at %s(%d): %s\n", \ 57 __FILE__, __LINE__, #b)); }} while (0) 58 #endif 59 60 #ifndef ABS 61 #define ABS(a) ((a)>0?(a):(-(a))) 62 #endif 63 64 #include "lib/util/memory.h" 65 66 /** 67 * Write backtrace to debug log 68 */ 69 _PUBLIC_ void call_backtrace(void); 70 71 /** 72 Something really nasty happened - panic ! 73 **/ 74 _PUBLIC_ _NORETURN_ void smb_panic(const char *why); 75 76 #if _SAMBA_BUILD_ == 4 77 /** 78 setup our fault handlers 79 **/ 80 _PUBLIC_ void fault_setup(const char *pname); 81 _PUBLIC_ void fault_setup_disable(void); 82 #endif 83 84 /** 85 register a fault handler. 86 Should only be called once in the execution of smbd. 87 */ 88 _PUBLIC_ bool register_fault_handler(const char *name, void (*fault_handler)(int sig)); 89 90 /* The following definitions come from lib/util/signal.c */ 91 92 93 /** 94 Block sigs. 95 **/ 96 void BlockSignals(bool block, int signum); 97 98 /** 99 Catch a signal. This should implement the following semantics: 100 101 1) The handler remains installed after being called. 102 2) The signal should be blocked during handler execution. 103 **/ 104 void (*CatchSignal(int signum,void (*handler)(int )))(int); 105 106 /** 107 Ignore SIGCLD via whatever means is necessary for this OS. 108 **/ 109 void CatchChild(void); 110 111 /** 112 Catch SIGCLD but leave the child around so it's status can be reaped. 113 **/ 114 void CatchChildLeaveStatus(void); 115 116 /* The following definitions come from lib/util/system.c */ 117 118 /************************************************************************** 119 A wrapper for gethostbyname() that tries avoids looking up hostnames 120 in the root domain, which can cause dial-on-demand links to come up for no 121 apparent reason. 122 ****************************************************************************/ 123 _PUBLIC_ struct hostent *sys_gethostbyname(const char *name); 124 _PUBLIC_ struct in_addr sys_inet_makeaddr(int net, int host); 125 126 /** 127 * Wrapper for fork used to invalid pid cache. 128 **/ 129 _PUBLIC_ pid_t sys_fork(void); 130 131 /** 132 * Wrapper for getpid. Ensures we only do a system call *once*. 133 **/ 134 _PUBLIC_ pid_t sys_getpid(void); 135 136 _PUBLIC_ int sys_getpeereid( int s, uid_t *uid); 137 138 struct sockaddr; 139 140 _PUBLIC_ int sys_getnameinfo(const struct sockaddr *psa, 141 int salen, 142 char *host, 143 size_t hostlen, 144 char *service, 145 size_t servlen, 146 int flags); 147 _PUBLIC_ int sys_connect(int fd, const struct sockaddr * addr); 148 149 /* The following definitions come from lib/util/genrand.c */ 150 /** 151 Copy any user given reseed data. 152 **/ 153 _PUBLIC_ void set_rand_reseed_callback(void (*fn)(void *, int *), void *); 154 155 /** 156 * Tell the random number generator it needs to reseed. 157 */ 158 _PUBLIC_ void set_need_random_reseed(void); 159 160 /** 161 Interface to the (hopefully) good crypto random number generator. 162 Will use our internal PRNG if more than 40 bytes of random generation 163 has been requested, otherwise tries to read from /dev/random 164 **/ 165 _PUBLIC_ void generate_random_buffer(uint8_t *out, int len); 166 167 /** 168 Interface to the (hopefully) good crypto random number generator. 169 Will always use /dev/urandom if available. 170 **/ 171 _PUBLIC_ void generate_secret_buffer(uint8_t *out, int len); 172 173 /** 174 generate a single random uint32_t 175 **/ 176 _PUBLIC_ uint32_t generate_random(void); 177 178 /** 179 very basic password quality checker 180 **/ 181 _PUBLIC_ bool check_password_quality(const char *s); 182 183 /** 184 * Generate a random text password. 185 */ 186 _PUBLIC_ char *generate_random_password(TALLOC_CTX *mem_ctx, size_t min, size_t max); 187 188 /** 189 Use the random number generator to generate a random string. 190 **/ 191 _PUBLIC_ char *generate_random_str_list(TALLOC_CTX *mem_ctx, size_t len, const char *list); 192 193 /** 194 * Generate a random text string consisting of the specified length. 195 * The returned string will be allocated. 196 * 197 * Characters used are: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_-#., 198 */ 199 _PUBLIC_ char *generate_random_str(TALLOC_CTX *mem_ctx, size_t len); 200 201 /** 202 * Generate an array of unique text strings all of the same length. 203 * The returned strings will be allocated. 204 * Returns NULL if the number of unique combinations cannot be created. 205 * 206 * Characters used are: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+_-#., 207 */ 208 _PUBLIC_ char** generate_unique_strs(TALLOC_CTX *mem_ctx, size_t len, 209 uint32_t num); 210 211 /* The following definitions come from lib/util/dprintf.c */ 212 #if _SAMBA_BUILD_ == 4 213 214 _PUBLIC_ void d_set_iconv(smb_iconv_t); 215 _PUBLIC_ int d_vfprintf(FILE *f, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0); 216 _PUBLIC_ int d_fprintf(FILE *f, const char *format, ...) PRINTF_ATTRIBUTE(2,3); 217 _PUBLIC_ int d_printf(const char *format, ...) PRINTF_ATTRIBUTE(1,2); 218 _PUBLIC_ void display_set_stderr(void); 219 #endif 220 221 /* The following definitions come from lib/util/util_str.c */ 222 223 bool next_token_talloc(TALLOC_CTX *ctx, 224 const char **ptr, 225 char **pp_buff, 226 const char *sep); 227 228 /** 229 * Get the next token from a string, return false if none found. Handles 230 * double-quotes. This version does not trim leading separator characters 231 * before looking for a token. 232 */ 233 bool next_token_no_ltrim_talloc(TALLOC_CTX *ctx, 234 const char **ptr, 235 char **pp_buff, 236 const char *sep); 237 238 239 /** 240 Trim the specified elements off the front and back of a string. 241 **/ 242 _PUBLIC_ bool trim_string(char *s, const char *front, const char *back); 243 244 /** 245 Find the number of 'c' chars in a string 246 **/ 247 _PUBLIC_ _PURE_ size_t count_chars(const char *s, char c); 248 249 /** 250 Safe string copy into a known length string. maxlength does not 251 include the terminating zero. 252 **/ 253 _PUBLIC_ char *safe_strcpy(char *dest,const char *src, size_t maxlength); 254 255 /** 256 Safe string cat into a string. maxlength does not 257 include the terminating zero. 258 **/ 259 _PUBLIC_ char *safe_strcat(char *dest, const char *src, size_t maxlength); 260 261 /** 262 Routine to get hex characters and turn them into a 16 byte array. 263 the array can be variable length, and any non-hex-numeric 264 characters are skipped. "0xnn" or "0Xnn" is specially catered 265 for. 266 267 valid examples: "0A5D15"; "0x15, 0x49, 0xa2"; "59\ta9\te3\n" 268 269 270 **/ 271 _PUBLIC_ size_t strhex_to_str(char *p, size_t p_len, const char *strhex, size_t strhex_len); 272 273 /** 274 * Parse a hex string and return a data blob. 275 */ 276 _PUBLIC_ _PURE_ DATA_BLOB strhex_to_data_blob(TALLOC_CTX *mem_ctx, const char *strhex) ; 277 278 /** 279 * Routine to print a buffer as HEX digits, into an allocated string. 280 */ 281 _PUBLIC_ void hex_encode(const unsigned char *buff_in, size_t len, char **out_hex_buffer); 282 283 /** 284 * talloc version of hex_encode() 285 */ 286 _PUBLIC_ char *hex_encode_talloc(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len); 287 288 /** 289 Substitute a string for a pattern in another string. Make sure there is 290 enough room! 291 292 This routine looks for pattern in s and replaces it with 293 insert. It may do multiple replacements. 294 295 Any of " ; ' $ or ` in the insert string are replaced with _ 296 if len==0 then the string cannot be extended. This is different from the old 297 use of len==0 which was for no length checks to be done. 298 **/ 299 _PUBLIC_ void string_sub(char *s,const char *pattern, const char *insert, size_t len); 300 301 302 _PUBLIC_ char *string_sub_talloc(TALLOC_CTX *mem_ctx, const char *s, 303 const char *pattern, const char *insert); 304 305 /** 306 Similar to string_sub() but allows for any character to be substituted. 307 Use with caution! 308 if len==0 then the string cannot be extended. This is different from the old 309 use of len==0 which was for no length checks to be done. 310 **/ 311 _PUBLIC_ void all_string_sub(char *s,const char *pattern,const char *insert, size_t len); 312 313 /** 314 Unescape a URL encoded string, in place. 315 **/ 316 _PUBLIC_ void rfc1738_unescape(char *buf); 317 318 319 /** 320 * rfc1738_escape 321 * Returns a static buffer that contains the RFC 322 * 1738 compliant, escaped version of the given url. (escapes unsafe and % characters) 323 **/ 324 _PUBLIC_ char *rfc1738_escape(TALLOC_CTX *mem_ctx, const char *url); 325 326 /** 327 * rfc1738_escape_unescaped 328 * 329 * Returns a static buffer that contains 330 * the RFC 1738 compliant, escaped version of the given url (escapes unsafe chars only) 331 **/ 332 _PUBLIC_ char *rfc1738_escape_unescaped(TALLOC_CTX *mem_ctx, const char *url); 333 334 /** 335 * rfc1738_escape_part 336 * Returns a static buffer that contains the RFC 337 * 1738 compliant, escaped version of the given url segment. (escapes 338 * unsafe, reserved and % chars) It would mangle the :// in http://, 339 * and mangle paths (because of /). 340 **/ 341 _PUBLIC_ char *rfc1738_escape_part(TALLOC_CTX *mem_ctx, const char *url); 342 343 /** 344 format a string into length-prefixed dotted domain format, as used in NBT 345 and in some ADS structures 346 **/ 347 _PUBLIC_ const char *str_format_nbt_domain(TALLOC_CTX *mem_ctx, const char *s); 348 349 /** 350 * Add a string to an array of strings. 351 * 352 * num should be a pointer to an integer that holds the current 353 * number of elements in strings. It will be updated by this function. 354 */ 355 _PUBLIC_ bool add_string_to_array(TALLOC_CTX *mem_ctx, 356 const char *str, const char ***strings, int *num); 357 358 /** 359 varient of strcmp() that handles NULL ptrs 360 **/ 361 _PUBLIC_ int strcmp_safe(const char *s1, const char *s2); 362 363 /** 364 return the number of bytes occupied by a buffer in ASCII format 365 the result includes the null termination 366 limited by 'n' bytes 367 **/ 368 _PUBLIC_ size_t ascii_len_n(const char *src, size_t n); 369 370 /** 371 Set a boolean variable from the text value stored in the passed string. 372 Returns true in success, false if the passed string does not correctly 373 represent a boolean. 374 **/ 375 _PUBLIC_ bool set_boolean(const char *boolean_string, bool *boolean); 376 377 /** 378 * Parse a string containing a boolean value. 379 * 380 * val will be set to the read value. 381 * 382 * @retval true if a boolean value was parsed, false otherwise. 383 */ 384 _PUBLIC_ bool conv_str_bool(const char * str, bool * val); 385 386 #if _SAMBA_BUILD_ == 4 387 /** 388 * Convert a size specification like 16K into an integral number of bytes. 389 **/ 390 _PUBLIC_ bool conv_str_size(const char * str, uint64_t * val); 391 #endif 392 393 /** 394 * Parse a uint64_t value from a string 395 * 396 * val will be set to the value read. 397 * 398 * @retval true if parsing was successful, false otherwise 399 */ 400 _PUBLIC_ bool conv_str_u64(const char * str, uint64_t * val); 401 402 /** 403 return the number of bytes occupied by a buffer in CH_UTF16 format 404 the result includes the null termination 405 **/ 406 _PUBLIC_ size_t utf16_len(const void *buf); 407 408 /** 409 return the number of bytes occupied by a buffer in CH_UTF16 format 410 the result includes the null termination 411 limited by 'n' bytes 412 **/ 413 _PUBLIC_ size_t utf16_len_n(const void *src, size_t n); 414 _PUBLIC_ size_t ucs2_align(const void *base_ptr, const void *p, int flags); 415 416 /** 417 Do a case-insensitive, whitespace-ignoring string compare. 418 **/ 419 _PUBLIC_ int strwicmp(const char *psz1, const char *psz2); 420 421 /** 422 String replace. 423 **/ 424 _PUBLIC_ void string_replace(char *s, char oldc, char newc); 425 426 /** 427 * Compare 2 strings. 428 * 429 * @note The comparison is case-insensitive. 430 **/ 431 _PUBLIC_ bool strequal(const char *s1, const char *s2); 432 433 /* The following definitions come from lib/util/util_strlist.c */ 434 435 /* separators for lists */ 436 #ifndef LIST_SEP 437 #define LIST_SEP " \t,\n\r" 438 #endif 439 440 /** 441 build an empty (only NULL terminated) list of strings (for expansion with str_list_add() etc) 442 */ 443 _PUBLIC_ char **str_list_make_empty(TALLOC_CTX *mem_ctx); 444 445 /** 446 place the only element 'entry' into a new, NULL terminated string list 447 */ 448 _PUBLIC_ char **str_list_make_single(TALLOC_CTX *mem_ctx, 449 const char *entry); 450 451 /** 452 build a null terminated list of strings from a input string and a 453 separator list. The separator list must contain characters less than 454 or equal to 0x2f for this to work correctly on multi-byte strings 455 */ 456 _PUBLIC_ char **str_list_make(TALLOC_CTX *mem_ctx, const char *string, 457 const char *sep); 458 459 /** 460 * build a null terminated list of strings from an argv-like input string 461 * Entries are separated by spaces and can be enclosed by quotes. 462 * Does NOT support escaping 463 */ 464 _PUBLIC_ char **str_list_make_shell(TALLOC_CTX *mem_ctx, const char *string, const char *sep); 465 466 /** 467 * join a list back to one string 468 */ 469 _PUBLIC_ char *str_list_join(TALLOC_CTX *mem_ctx, const char **list, char separator); 470 471 /** join a list back to one (shell-like) string; entries 472 * separated by spaces, using quotes where necessary */ 473 _PUBLIC_ char *str_list_join_shell(TALLOC_CTX *mem_ctx, const char **list, char sep); 474 475 /** 476 return the number of elements in a string list 477 */ 478 _PUBLIC_ size_t str_list_length(const char * const *list); 479 480 /** 481 copy a string list 482 */ 483 _PUBLIC_ char **str_list_copy(TALLOC_CTX *mem_ctx, const char **list); 484 485 /** 486 Return true if all the elements of the list match exactly. 487 */ 488 _PUBLIC_ bool str_list_equal(const char * const *list1, const char * const *list2); 489 490 /** 491 add an entry to a string list 492 */ 493 _PUBLIC_ const char **str_list_add(const char **list, const char *s); 494 495 /** 496 remove an entry from a string list 497 */ 498 _PUBLIC_ void str_list_remove(const char **list, const char *s); 499 500 /** 501 return true if a string is in a list 502 */ 503 _PUBLIC_ bool str_list_check(const char **list, const char *s); 504 505 /** 506 return true if a string is in a list, case insensitively 507 */ 508 _PUBLIC_ bool str_list_check_ci(const char **list, const char *s); 509 /** 510 append one list to another - expanding list1 511 */ 512 _PUBLIC_ const char **str_list_append(const char **list1, 513 const char * const *list2); 514 515 /** 516 remove duplicate elements from a list 517 */ 518 _PUBLIC_ const char **str_list_unique(const char **list); 519 520 /* 521 very useful when debugging complex list related code 522 */ 523 _PUBLIC_ void str_list_show(const char **list); 524 525 526 /** 527 append one list to another - expanding list1 528 this assumes the elements of list2 are const pointers, so we can re-use them 529 */ 530 _PUBLIC_ const char **str_list_append_const(const char **list1, 531 const char **list2); 532 533 /** 534 add an entry to a string list 535 this assumes s will not change 536 */ 537 _PUBLIC_ const char **str_list_add_const(const char **list, const char *s); 538 539 /** 540 copy a string list 541 this assumes list will not change 542 */ 543 _PUBLIC_ const char **str_list_copy_const(TALLOC_CTX *mem_ctx, 544 const char **list); 545 546 /** 547 * Needed for making an "unconst" list "const" 548 */ 549 _PUBLIC_ const char **const_str_list(char **list); 550 551 552 /* The following definitions come from lib/util/util_file.c */ 553 554 555 /** 556 read a line from a file with possible \ continuation chars. 557 Blanks at the start or end of a line are stripped. 558 The string will be allocated if s2 is NULL 559 **/ 560 _PUBLIC_ char *fgets_slash(char *s2,int maxlen,XFILE *f); 561 562 /** 563 * Read one line (data until next newline or eof) and allocate it 564 */ 565 _PUBLIC_ char *afdgets(int fd, TALLOC_CTX *mem_ctx, size_t hint); 566 567 /** 568 load a file into memory from a fd. 569 **/ 570 _PUBLIC_ char *fd_load(int fd, size_t *size, size_t maxsize, TALLOC_CTX *mem_ctx); 571 572 573 char **file_lines_parse(char *p, size_t size, int *numlines, TALLOC_CTX *mem_ctx); 574 575 /** 576 load a file into memory 577 **/ 578 _PUBLIC_ char *file_load(const char *fname, size_t *size, size_t maxsize, TALLOC_CTX *mem_ctx); 579 580 /** 581 mmap (if possible) or read a file 582 **/ 583 _PUBLIC_ void *map_file(const char *fname, size_t size); 584 585 /** 586 load a file into memory and return an array of pointers to lines in the file 587 must be freed with talloc_free(). 588 **/ 589 _PUBLIC_ char **file_lines_load(const char *fname, int *numlines, size_t maxsize, TALLOC_CTX *mem_ctx); 590 591 /** 592 load a fd into memory and return an array of pointers to lines in the file 593 must be freed with talloc_free(). If convert is true calls unix_to_dos on 594 the list. 595 **/ 596 _PUBLIC_ char **fd_lines_load(int fd, int *numlines, size_t maxsize, TALLOC_CTX *mem_ctx); 597 598 /** 599 take a list of lines and modify them to produce a list where \ continues 600 a line 601 **/ 602 _PUBLIC_ void file_lines_slashcont(char **lines); 603 604 /** 605 save a lump of data into a file. Mostly used for debugging 606 */ 607 _PUBLIC_ bool file_save(const char *fname, const void *packet, size_t length); 608 _PUBLIC_ int vfdprintf(int fd, const char *format, va_list ap) PRINTF_ATTRIBUTE(2,0); 609 _PUBLIC_ int fdprintf(int fd, const char *format, ...) PRINTF_ATTRIBUTE(2,3); 610 _PUBLIC_ bool large_file_support(const char *path); 611 612 /* 613 compare two files, return true if the two files have the same content 614 */ 615 bool file_compare(const char *path1, const char *path2); 616 617 /* The following definitions come from lib/util/util.c */ 618 619 620 /** 621 Find a suitable temporary directory. The result should be copied immediately 622 as it may be overwritten by a subsequent call. 623 **/ 624 _PUBLIC_ const char *tmpdir(void); 625 626 /** 627 Check if a file exists - call vfs_file_exist for samba files. 628 **/ 629 _PUBLIC_ bool file_exist(const char *fname); 630 631 /** 632 Check a files mod time. 633 **/ 634 _PUBLIC_ time_t file_modtime(const char *fname); 635 636 /** 637 Check if a directory exists. 638 **/ 639 _PUBLIC_ bool directory_exist(const char *dname); 640 641 /** 642 * Try to create the specified directory if it didn't exist. 643 * 644 * @retval true if the directory already existed and has the right permissions 645 * or was successfully created. 646 */ 647 _PUBLIC_ bool directory_create_or_exist(const char *dname, uid_t uid, 648 mode_t dir_perms); 649 650 /** 651 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available, 652 else 653 if SYSV use O_NDELAY 654 if BSD use FNDELAY 655 **/ 656 _PUBLIC_ int set_blocking(int fd, bool set); 657 658 /** 659 Sleep for a specified number of milliseconds. 660 **/ 661 _PUBLIC_ void smb_msleep(unsigned int t); 662 663 /** 664 Get my own name, return in talloc'ed storage. 665 **/ 666 _PUBLIC_ char* get_myname(TALLOC_CTX *mem_ctx); 667 668 /** 669 Check if a process exists. Does this work on all unixes? 670 **/ 671 _PUBLIC_ bool process_exists_by_pid(pid_t pid); 672 673 /** 674 Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping 675 is dealt with in posix.c 676 **/ 677 _PUBLIC_ bool fcntl_lock(int fd, int op, off_t offset, off_t count, int type); 21 #ifndef __UTIL_SAMBA_UTIL_H__ 22 #define __UTIL_SAMBA_UTIL_H__ 678 23 679 24 /** … … 684 29 void (*cb)(const char *buf, void *private_data), 685 30 void *private_data); 31 32 /** 33 * Write dump of binary data to a FILE 34 */ 35 void dump_data_file(const uint8_t *buf, int len, bool omit_zero_bytes, 36 FILE *f); 686 37 687 38 /** … … 695 46 * Write dump of binary data to the log file. 696 47 * 697 * The data is only written if the log level is at least level .698 * 16 zero bytes in a row are omitted48 * The data is only written if the log level is at least level for 49 * debug class dbgc_class. 699 50 */ 700 _PUBLIC_ void dump_data_ skip_zeros(int level, const uint8_t *buf, int len);51 _PUBLIC_ void dump_data_dbgc(int dbgc_class, int level, const uint8_t *buf, int len); 701 52 702 /**703 malloc that aborts with smb_panic on fail or zero size.704 **/705 _PUBLIC_ void *smb_xmalloc(size_t size);706 707 /**708 Memdup with smb_panic on fail.709 **/710 _PUBLIC_ void *smb_xmemdup(const void *p, size_t size);711 712 /**713 strdup that aborts on malloc fail.714 **/715 _PUBLIC_ char *smb_xstrdup(const char *s);716 717 char *smb_xstrndup(const char *s, size_t n);718 719 /**720 Like strdup but for memory.721 **/722 _PUBLIC_ void *memdup(const void *p, size_t size);723 724 /**725 * Write a password to the log file.726 *727 * @note Only actually does something if DEBUG_PASSWORD was defined during728 * compile-time.729 */730 _PUBLIC_ void dump_data_pw(const char *msg, const uint8_t * data, size_t len);731 732 /**733 * see if a range of memory is all zero. A NULL pointer is considered734 * to be all zero735 */736 _PUBLIC_ bool all_zero(const uint8_t *ptr, size_t size);737 738 /**739 realloc an array, checking for integer overflow in the array size740 */741 _PUBLIC_ void *realloc_array(void *ptr, size_t el_size, unsigned count, bool free_on_fail);742 743 void *malloc_array(size_t el_size, unsigned int count);744 745 /* The following definitions come from lib/util/fsusage.c */746 747 748 /**749 * Retrieve amount of free disk space.750 * this does all of the system specific guff to get the free disk space.751 * It is derived from code in the GNU fileutils package, but has been752 * considerably mangled for use here753 *754 * results are returned in *dfree and *dsize, in 512 byte units755 */756 _PUBLIC_ int sys_fsusage(const char *path, uint64_t *dfree, uint64_t *dsize);757 758 /* The following definitions come from lib/util/ms_fnmatch.c */759 760 761 /**762 * @file763 * @brief MS-style Filename matching764 */765 766 #if _SAMBA_BUILD_ == 4767 /* protocol types. It assumes that higher protocols include lower protocols768 as subsets. FIXME: Move to one of the smb-specific headers */769 enum protocol_types {770 PROTOCOL_NONE,771 PROTOCOL_CORE,772 PROTOCOL_COREPLUS,773 PROTOCOL_LANMAN1,774 PROTOCOL_LANMAN2,775 PROTOCOL_NT1,776 PROTOCOL_SMB2777 };778 779 int ms_fnmatch(const char *pattern, const char *string, enum protocol_types protocol);780 781 /** a generic fnmatch function - uses for non-CIFS pattern matching */782 int gen_fnmatch(const char *pattern, const char *string);783 53 #endif 784 785 /* The following definitions come from lib/util/idtree.c */786 787 788 /**789 initialise a idr tree. The context return value must be passed to790 all subsequent idr calls. To destroy the idr tree use talloc_free()791 on this context792 */793 _PUBLIC_ struct idr_context *idr_init(TALLOC_CTX *mem_ctx);794 795 /**796 allocate the next available id, and assign 'ptr' into its slot.797 you can retrieve later this pointer using idr_find()798 */799 _PUBLIC_ int idr_get_new(struct idr_context *idp, void *ptr, int limit);800 801 /**802 allocate a new id, giving the first available value greater than or803 equal to the given starting id804 */805 _PUBLIC_ int idr_get_new_above(struct idr_context *idp, void *ptr, int starting_id, int limit);806 807 /**808 allocate a new id randomly in the given range809 */810 _PUBLIC_ int idr_get_new_random(struct idr_context *idp, void *ptr, int limit);811 812 /**813 find a pointer value previously set with idr_get_new given an id814 */815 _PUBLIC_ void *idr_find(struct idr_context *idp, int id);816 817 /**818 remove an id from the idr tree819 */820 _PUBLIC_ int idr_remove(struct idr_context *idp, int id);821 822 /* The following definitions come from lib/util/become_daemon.c */823 824 /**825 Close the low 3 fd's and open dev/null in their place826 **/827 _PUBLIC_ void close_low_fds(bool stderr_too);828 829 /**830 Become a daemon, discarding the controlling terminal.831 **/832 _PUBLIC_ void become_daemon(bool do_fork, bool no_process_group, bool log_stdout);833 834 /**835 * Load a ini-style file.836 */837 bool pm_process( const char *fileName,838 bool (*sfunc)(const char *, void *),839 bool (*pfunc)(const char *, const char *, void *),840 void *userdata);841 842 bool unmap_file(void *start, size_t size);843 844 void print_asc(int level, const uint8_t *buf,int len);845 void print_asc_cb(const uint8_t *buf, int len,846 void (*cb)(const char *buf, void *private_data),847 void *private_data);848 849 /**850 * Add an id to an array of ids.851 *852 * num should be a pointer to an integer that holds the current853 * number of elements in ids. It will be updated by this function.854 */855 856 bool add_uid_to_array_unique(TALLOC_CTX *mem_ctx, uid_t uid,857 uid_t **uids, uint32_t *num_uids);858 bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,859 gid_t **gids, uint32_t *num_gids);860 861 /**862 * Allocate anonymous shared memory of the given size863 */864 void *anonymous_shared_allocate(size_t bufsz);865 void anonymous_shared_free(void *ptr);866 867 /*868 run a command as a child process, with a timeout.869 870 any stdout/stderr from the child will appear in the Samba logs with871 the specified log levels872 873 If callback is set then the callback is called on completion874 with the return code from the command875 */876 struct tevent_context;877 struct tevent_req;878 struct tevent_req *samba_runcmd_send(TALLOC_CTX *mem_ctx,879 struct tevent_context *ev,880 struct timeval endtime,881 int stdout_log_level,882 int stderr_log_level,883 const char * const *argv0, ...);884 int samba_runcmd_recv(struct tevent_req *req, int *perrno);885 886 #ifdef DEVELOPER887 void samba_start_debugger(void);888 #endif889 890 #endif /* _SAMBA_UTIL_H_ */
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