external/cddl/osnet/dist/lib/libuutil/common/libuutil.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _LIBUUTIL_H
  27 #define _LIBUUTIL_H
  28
  29 #include <sys/types.h>
  30 #include <stdarg.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Standard flags codes.
  38  */
  39 #define UU_DEFAULT              0
  40
  41 /*
  42  * Standard error codes.
  43  */
  44 #define UU_ERROR_NONE           0       /* no error */
  45 #define UU_ERROR_INVALID_ARGUMENT 1     /* invalid argument */
  46 #define UU_ERROR_UNKNOWN_FLAG   2       /* passed flag invalid */
  47 #define UU_ERROR_NO_MEMORY      3       /* out of memory */
  48 #define UU_ERROR_CALLBACK_FAILED 4      /* callback-initiated error */
  49 #define UU_ERROR_NOT_SUPPORTED  5       /* operation not supported */
  50 #define UU_ERROR_EMPTY          6       /* no value provided */
  51 #define UU_ERROR_UNDERFLOW      7       /* value is too small */
  52 #define UU_ERROR_OVERFLOW       8       /* value is too value */
  53 #define UU_ERROR_INVALID_CHAR   9       /* value contains unexpected char */
  54 #define UU_ERROR_INVALID_DIGIT  10      /* value contains digit not in base */
  55
  56 #define UU_ERROR_SYSTEM         99      /* underlying system error */
  57 #define UU_ERROR_UNKNOWN        100     /* error status not known */
  58
  59 /*
  60  * Standard program exit codes.
  61  */
  62 #define UU_EXIT_OK      (*(uu_exit_ok()))
  63 #define UU_EXIT_FATAL   (*(uu_exit_fatal()))
  64 #define UU_EXIT_USAGE   (*(uu_exit_usage()))
  65
  66 /*
  67  * Exit status profiles.
  68  */
  69 #define UU_PROFILE_DEFAULT      0
  70 #define UU_PROFILE_LAUNCHER     1
  71
  72 /*
  73  * Error reporting functions.
  74  */
  75 uint32_t uu_error(void);
  76 const char *uu_strerror(uint32_t);
  77
  78 /*
  79  * Program notification functions.
  80  */
  81 extern void uu_alt_exit(int);
  82 extern const char *uu_setpname(char *);
  83 extern const char *uu_getpname(void);
  84 /*PRINTFLIKE1*/
  85 extern void uu_warn(const char *, ...);
  86 extern void uu_vwarn(const char *, va_list);
  87 /*PRINTFLIKE1*/
  88 extern void uu_die(const char *, ...) __NORETURN;
  89 extern void uu_vdie(const char *, va_list) __NORETURN;
  90 /*PRINTFLIKE2*/
  91 extern void uu_xdie(int, const char *, ...) __NORETURN;
  92 extern void uu_vxdie(int, const char *, va_list) __NORETURN;
  93
  94 /*
  95  * Exit status functions (not to be used directly)
  96  */
  97 extern int *uu_exit_ok(void);
  98 extern int *uu_exit_fatal(void);
  99 extern int *uu_exit_usage(void);
 100
 101 /*
 102  * string->number conversions
 103  */
 104 extern int uu_strtoint(const char *, void *, size_t, int, int64_t, int64_t);
 105 extern int uu_strtouint(const char *, void *, size_t, int, uint64_t, uint64_t);
 106
 107 /*
 108  * Debug print facility functions.
 109  */
 110 typedef struct uu_dprintf uu_dprintf_t;
 111
 112 typedef enum {
 113         UU_DPRINTF_SILENT,
 114         UU_DPRINTF_FATAL,
 115         UU_DPRINTF_WARNING,
 116         UU_DPRINTF_NOTICE,
 117         UU_DPRINTF_INFO,
 118         UU_DPRINTF_DEBUG
 119 } uu_dprintf_severity_t;
 120
 121 extern uu_dprintf_t *uu_dprintf_create(const char *, uu_dprintf_severity_t,
 122     uint_t);
 123 /*PRINTFLIKE3*/
 124 extern void uu_dprintf(uu_dprintf_t *, uu_dprintf_severity_t,
 125     const char *, ...);
 126 extern void uu_dprintf_destroy(uu_dprintf_t *);
 127 extern const char *uu_dprintf_getname(uu_dprintf_t *);
 128
 129 /*
 130  * Identifier test flags and function.
 131  */
 132 #define UU_NAME_DOMAIN          0x1     /* allow SUNW, or com.sun, prefix */
 133 #define UU_NAME_PATH            0x2     /* allow '/'-delimited paths */
 134
 135 int uu_check_name(const char *, uint_t);
 136
 137 /*
 138  * File creation functions.
 139  */
 140 extern int uu_open_tmp(const char *dir, uint_t uflags);
 141
 142 /*
 143  * Convenience functions.
 144  */
 145 /*PRINTFLIKE1*/
 146 extern char *uu_msprintf(const char *format, ...);
 147 extern void *uu_zalloc(size_t);
 148 extern char *uu_strdup(const char *);
 149 extern void uu_free(void *);
 150
 151 /*
 152  * Comparison function type definition.
 153  *   Developers should be careful in their use of the _private argument. If you
 154  *   break interface guarantees, you get undefined behavior.
 155  */
 156 typedef int uu_compare_fn_t(const void *__left, const void *__right,
 157     void *__private);
 158
 159 /*
 160  * Walk variant flags.
 161  *   A data structure need not provide support for all variants and
 162  *   combinations.  Refer to the appropriate documentation.
 163  */
 164 #define UU_WALK_ROBUST          0x00000001      /* walk can survive removes */
 165 #define UU_WALK_REVERSE         0x00000002      /* reverse walk order */
 166
 167 #define UU_WALK_PREORDER        0x00000010      /* walk tree in pre-order */
 168 #define UU_WALK_POSTORDER       0x00000020      /* walk tree in post-order */
 169
 170 /*
 171  * Walk callback function return codes.
 172  */
 173 #define UU_WALK_ERROR           -1
 174 #define UU_WALK_NEXT            0
 175 #define UU_WALK_DONE            1
 176
 177 /*
 178  * Walk callback function type definition.
 179  */
 180 typedef int uu_walk_fn_t(void *_elem, void *_private);
 181
 182 /*
 183  * lists: opaque structures
 184  */
 185 typedef struct uu_list_pool uu_list_pool_t;
 186 typedef struct uu_list uu_list_t;
 187
 188 typedef struct uu_list_node {
 189         uintptr_t uln_opaque[2];
 190 } uu_list_node_t;
 191
 192 typedef struct uu_list_walk uu_list_walk_t;
 193
 194 typedef uintptr_t uu_list_index_t;
 195
 196 /*
 197  * lists: interface
 198  *
 199  * basic usage:
 200  *      typedef struct foo {
 201  *              ...
 202  *              uu_list_node_t foo_node;
 203  *              ...
 204  *      } foo_t;
 205  *
 206  *      static int
 207  *      foo_compare(void *l_arg, void *r_arg, void *private)
 208  *      {
 209  *              foo_t *l = l_arg;
 210  *              foo_t *r = r_arg;
 211  *
 212  *              if (... l greater than r ...)
 213  *                      return (1);
 214  *              if (... l less than r ...)
 215  *                      return (-1);
 216  *              return (0);
 217  *      }
 218  *
 219  *      ...
 220  *              // at initialization time
 221  *              foo_pool = uu_list_pool_create("foo_pool",
 222  *                  sizeof (foo_t), offsetof(foo_t, foo_node), foo_compare,
 223  *                  debugging? 0 : UU_AVL_POOL_DEBUG);
 224  *      ...
 225  */
 226 uu_list_pool_t *uu_list_pool_create(const char *, size_t, size_t,
 227     uu_compare_fn_t *, uint32_t);
 228 #define UU_LIST_POOL_DEBUG      0x00000001
 229
 230 void uu_list_pool_destroy(uu_list_pool_t *);
 231
 232 /*
 233  * usage:
 234  *
 235  *      foo_t *a;
 236  *      a = malloc(sizeof(*a));
 237  *      uu_list_node_init(a, &a->foo_list, pool);
 238  *      ...
 239  *      uu_list_node_fini(a, &a->foo_list, pool);
 240  *      free(a);
 241  */
 242 void uu_list_node_init(void *, uu_list_node_t *, uu_list_pool_t *);
 243 void uu_list_node_fini(void *, uu_list_node_t *, uu_list_pool_t *);
 244
 245 uu_list_t *uu_list_create(uu_list_pool_t *, void *_parent, uint32_t);
 246 #define UU_LIST_DEBUG   0x00000001
 247 #define UU_LIST_SORTED  0x00000002      /* list is sorted */
 248
 249 void uu_list_destroy(uu_list_t *);      /* list must be empty */
 250
 251 size_t uu_list_numnodes(uu_list_t *);
 252
 253 void *uu_list_first(uu_list_t *);
 254 void *uu_list_last(uu_list_t *);
 255
 256 void *uu_list_next(uu_list_t *, void *);
 257 void *uu_list_prev(uu_list_t *, void *);
 258
 259 int uu_list_walk(uu_list_t *, uu_walk_fn_t *, void *, uint32_t);
 260
 261 uu_list_walk_t *uu_list_walk_start(uu_list_t *, uint32_t);
 262 void *uu_list_walk_next(uu_list_walk_t *);
 263 void uu_list_walk_end(uu_list_walk_t *);
 264
 265 void *uu_list_find(uu_list_t *, void *, void *, uu_list_index_t *);
 266 void uu_list_insert(uu_list_t *, void *, uu_list_index_t);
 267
 268 void *uu_list_nearest_next(uu_list_t *, uu_list_index_t);
 269 void *uu_list_nearest_prev(uu_list_t *, uu_list_index_t);
 270
 271 void *uu_list_teardown(uu_list_t *, void **);
 272
 273 void uu_list_remove(uu_list_t *, void *);
 274
 275 /*
 276  * lists: interfaces for non-sorted lists only
 277  */
 278 int uu_list_insert_before(uu_list_t *, void *_target, void *_elem);
 279 int uu_list_insert_after(uu_list_t *, void *_target, void *_elem);
 280
 281 /*
 282  * avl trees: opaque structures
 283  */
 284 typedef struct uu_avl_pool uu_avl_pool_t;
 285 typedef struct uu_avl uu_avl_t;
 286
 287 typedef struct uu_avl_node {
 288 #ifdef _LP64
 289         uintptr_t uan_opaque[3];
 290 #else
 291         uintptr_t uan_opaque[4];
 292 #endif
 293 } uu_avl_node_t;
 294
 295 typedef struct uu_avl_walk uu_avl_walk_t;
 296
 297 typedef uintptr_t uu_avl_index_t;
 298
 299 /*
 300  * avl trees: interface
 301  *
 302  * basic usage:
 303  *      typedef struct foo {
 304  *              ...
 305  *              uu_avl_node_t foo_node;
 306  *              ...
 307  *      } foo_t;
 308  *
 309  *      static int
 310  *      foo_compare(void *l_arg, void *r_arg, void *private)
 311  *      {
 312  *              foo_t *l = l_arg;
 313  *              foo_t *r = r_arg;
 314  *
 315  *              if (... l greater than r ...)
 316  *                      return (1);
 317  *              if (... l less than r ...)
 318  *                      return (-1);
 319  *              return (0);
 320  *      }
 321  *
 322  *      ...
 323  *              // at initialization time
 324  *              foo_pool = uu_avl_pool_create("foo_pool",
 325  *                  sizeof (foo_t), offsetof(foo_t, foo_node), foo_compare,
 326  *                  debugging? 0 : UU_AVL_POOL_DEBUG);
 327  *      ...
 328  */
 329 uu_avl_pool_t *uu_avl_pool_create(const char *, size_t, size_t,
 330     uu_compare_fn_t *, uint32_t);
 331 #define UU_AVL_POOL_DEBUG       0x00000001
 332
 333 void uu_avl_pool_destroy(uu_avl_pool_t *);
 334
 335 /*
 336  * usage:
 337  *
 338  *      foo_t *a;
 339  *      a = malloc(sizeof(*a));
 340  *      uu_avl_node_init(a, &a->foo_avl, pool);
 341  *      ...
 342  *      uu_avl_node_fini(a, &a->foo_avl, pool);
 343  *      free(a);
 344  */
 345 void uu_avl_node_init(void *, uu_avl_node_t *, uu_avl_pool_t *);
 346 void uu_avl_node_fini(void *, uu_avl_node_t *, uu_avl_pool_t *);
 347
 348 uu_avl_t *uu_avl_create(uu_avl_pool_t *, void *_parent, uint32_t);
 349 #define UU_AVL_DEBUG    0x00000001
 350
 351 void uu_avl_destroy(uu_avl_t *);        /* list must be empty */
 352
 353 size_t uu_avl_numnodes(uu_avl_t *);
 354
 355 void *uu_avl_first(uu_avl_t *);
 356 void *uu_avl_last(uu_avl_t *);
 357
 358 void *uu_avl_next(uu_avl_t *, void *);
 359 void *uu_avl_prev(uu_avl_t *, void *);
 360
 361 int uu_avl_walk(uu_avl_t *, uu_walk_fn_t *, void *, uint32_t);
 362
 363 uu_avl_walk_t *uu_avl_walk_start(uu_avl_t *, uint32_t);
 364 void *uu_avl_walk_next(uu_avl_walk_t *);
 365 void uu_avl_walk_end(uu_avl_walk_t *);
 366
 367 void *uu_avl_find(uu_avl_t *, void *, void *, uu_avl_index_t *);
 368 void uu_avl_insert(uu_avl_t *, void *, uu_avl_index_t);
 369
 370 void *uu_avl_nearest_next(uu_avl_t *, uu_avl_index_t);
 371 void *uu_avl_nearest_prev(uu_avl_t *, uu_avl_index_t);
 372
 373 void *uu_avl_teardown(uu_avl_t *, void **);
 374
 375 void uu_avl_remove(uu_avl_t *, void *);
 376
 377 #ifdef  __cplusplus
 378 }
 379 #endif
 380
 381 #endif  /* _LIBUUTIL_H */