9798674f27
This commit adds support for reallocarray function. The functionality is the same as for standard realloc, but the function also checks for multiplication overflow and fails safely in case it occurs. Signed-off-by: Michal Lenc <michallenc@seznam.cz>
325 lines
9.1 KiB
C
325 lines
9.1 KiB
C
/****************************************************************************
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* include/stdlib.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_STDLIB_H
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#define __INCLUDE_STDLIB_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <limits.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* The C standard specifies two constants, EXIT_SUCCESS and EXIT_FAILURE,
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* that may be passed to exit() to indicate successful or unsuccessful
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* termination, respectively.
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*/
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#define EXIT_SUCCESS 0
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#define EXIT_FAILURE 1
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/* The NULL pointer should be defined in this file but is currently defined
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* in sys/types.h.
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*/
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/* Maximum value returned by rand(). Must be a minimum of 32767. */
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#define RAND_MAX INT_MAX
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/* Integer expression whose value is the maximum number of bytes in a
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* character specified by the current locale.
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*/
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#define MB_CUR_MAX 4
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/* The environ variable, normally 'char **environ;' is not implemented as a
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* function call. However, get_environ_ptr() can be used in its place.
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*/
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#ifdef CONFIG_DISABLE_ENVIRON
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# define environ NULL
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#else
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# define environ get_environ_ptr()
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#endif
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#if defined(CONFIG_FS_LARGEFILE)
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# define mkstemp64 mkstemp
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# define mkostemp64 mkostemp
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# define mkstemps64 mkstemps
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# define mkostemps64 mkostemps
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#endif
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#define strtof_l(s, e, l) strtof(s, e)
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#define strtod_l(s, e, l) strtod(s, e)
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#define strtold_l(s, e, l) strtold(s, e)
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#define strtoll_l(s, e, b, l) strtoll(s, e, b)
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#define strtoull_l(s, e, b, l) strtoull(s, e, b)
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* Structure type returned by the div() function. */
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struct div_s
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{
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int quot; /* Quotient */
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int rem; /* Remainder */
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};
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typedef struct div_s div_t;
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/* Structure type returned by the ldiv() function. */
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struct ldiv_s
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{
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long quot; /* Quotient */
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long rem; /* Remainder */
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};
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typedef struct ldiv_s ldiv_t;
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/* Structure type returned by the lldiv() function. */
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struct lldiv_s
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{
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long quot; /* Quotient */
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long rem; /* Remainder */
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};
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typedef struct lldiv_s lldiv_t;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/* Random number generation */
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void srand(unsigned int seed);
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int rand(void);
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int rand_r(FAR unsigned int *seedp);
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void lcong48(FAR unsigned short int param[7]);
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FAR unsigned short int *seed48(FAR unsigned short int seed16v[3]);
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void srand48(long int seedval);
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#ifdef CONFIG_HAVE_LONG_LONG
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long int jrand48(FAR unsigned short int xsubi[3]);
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long int lrand48(void);
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long int mrand48(void);
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long int nrand48(FAR unsigned short int xsubi[3]);
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# ifdef CONFIG_HAVE_DOUBLE
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double drand48(void);
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double erand48(FAR unsigned short int xsubi[3]);
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# endif
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#endif
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#define srandom(s) srand(s)
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long random(void);
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#ifdef CONFIG_CRYPTO_RANDOM_POOL
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void arc4random_buf(FAR void *bytes, size_t nbytes);
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uint32_t arc4random(void);
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#endif
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/* Environment variable support */
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FAR char **get_environ_ptr(void);
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FAR char *getenv(FAR const char *name);
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int putenv(FAR const char *string);
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int clearenv(void);
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int setenv(FAR const char *name, FAR const char *value, int overwrite);
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int unsetenv(FAR const char *name);
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/* Process exit functions */
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void exit(int status) noreturn_function;
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void quick_exit(int status) noreturn_function;
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void abort(void) noreturn_function;
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int atexit(CODE void (*func)(void));
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int at_quick_exit(CODE void (*func)(void));
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int on_exit(CODE void (*func)(int, FAR void *), FAR void *arg);
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/* _Exit() is a stdlib.h equivalent to the unistd.h _exit() function */
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void _Exit(int status) noreturn_function;
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/* System() command is not implemented in the NuttX libc because it is so
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* entangled with shell logic. There is an experimental version at
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* apps/system/system. system() is prototyped here, however, for
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* standards compatibility.
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*/
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#ifndef __KERNEL__
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int system(FAR const char *cmd);
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#endif
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FAR char *realpath(FAR const char *path, FAR char *resolved);
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/* String to binary conversions */
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long strtol(FAR const char *nptr, FAR char **endptr, int base);
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unsigned long strtoul(FAR const char *nptr, FAR char **endptr, int base);
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#ifdef CONFIG_HAVE_LONG_LONG
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long long strtoll(FAR const char *nptr, FAR char **endptr, int base);
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unsigned long long strtoull(FAR const char *nptr, FAR char **endptr,
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int base);
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#endif
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float strtof(FAR const char *str, FAR char **endptr);
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#ifdef CONFIG_HAVE_DOUBLE
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double strtod(FAR const char *str, FAR char **endptr);
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#endif
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#ifdef CONFIG_HAVE_LONG_DOUBLE
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long double strtold(FAR const char *str, FAR char **endptr);
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#endif
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int atoi(FAR const char *nptr);
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long atol(FAR const char *nptr);
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#ifdef CONFIG_HAVE_LONG_LONG
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long long atoll(FAR const char *nptr);
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#endif
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#ifdef CONFIG_HAVE_DOUBLE
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double atof(FAR const char *nptr);
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#endif
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/* Binary to string conversions */
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FAR char *itoa(int val, FAR char *str, int base);
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/* Wide character operations */
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int mblen(FAR const char *s, size_t n);
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int mbtowc(FAR wchar_t *pwc, FAR const char *s, size_t n);
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size_t mbstowcs(FAR wchar_t *dst, FAR const char *src, size_t len);
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int wctomb(FAR char *s, wchar_t wchar);
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size_t wcstombs(FAR char *dst, FAR const wchar_t *src, size_t len);
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/* Memory Management */
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FAR void *malloc(size_t) malloc_like1(1);
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FAR void *valloc(size_t) malloc_like1(1);
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void free(FAR void *);
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FAR void *realloc(FAR void *, size_t) realloc_like(2);
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FAR void *reallocarray(FAR void *, size_t, size_t) realloc_like2(2, 3);
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FAR void *memalign(size_t, size_t) malloc_like1(2);
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FAR void *zalloc(size_t) malloc_like1(1);
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FAR void *calloc(size_t, size_t) malloc_like2(1, 2);
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FAR void *aligned_alloc(size_t, size_t) malloc_like1(2);
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int posix_memalign(FAR void **, size_t, size_t);
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/* Pseudo-Terminals */
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#ifdef CONFIG_PSEUDOTERM
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int posix_openpt(int oflag);
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FAR char *ptsname(int fd);
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int ptsname_r(int fd, FAR char *buf, size_t buflen);
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int unlockpt(int fd);
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/* int grantpt(int fd); Not implemented */
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#define grantpt(fd) (0)
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#endif
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/* Arithmetic */
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int abs(int j);
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long int labs(long int j);
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#ifdef CONFIG_HAVE_LONG_LONG
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long long int llabs(long long int j);
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#endif
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div_t div(int number, int denom);
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ldiv_t ldiv(long number, long denom);
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#ifdef CONFIG_HAVE_LONG_LONG
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lldiv_t lldiv(long long number, long long denom);
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#endif
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/* Temporary files */
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FAR char *mktemp(FAR char *path_template);
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int mkstemp(FAR char *path_template);
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FAR char *mkdtemp(FAR char *path_template);
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/* Sorting */
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void qsort(FAR void *base, size_t nel, size_t width,
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CODE int (*compar)(FAR const void *, FAR const void *));
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/* Binary search */
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FAR void *bsearch(FAR const void *key, FAR const void *base, size_t nel,
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size_t width, CODE int (*compar)(FAR const void *,
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FAR const void *));
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/* Current program name manipulation */
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FAR const char *getprogname(void);
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/* Registers a destructor function to be called by exit() */
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int __cxa_atexit(CODE void (*func)(FAR void *), FAR void *arg,
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FAR void *dso_handle);
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#if CONFIG_FORTIFY_SOURCE > 0
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fortify_function(realpath) FAR char *realpath(FAR const char *path,
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FAR char *resolved)
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{
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FAR char *ret = __real_realpath(path, resolved);
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if (ret != NULL && resolved != NULL)
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{
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size_t len = 1;
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FAR char *p;
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p = ret;
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while (*p++ != '\0')
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{
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len++;
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}
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fortify_assert(len <= fortify_size(resolved, 0));
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}
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return ret;
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}
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_STDLIB_H */
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