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- /****************************************************************************
- * libs/libc/libc.h
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership. The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
- #ifndef __LIBC_LIBC_H
- #define __LIBC_LIBC_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <sys/types.h>
- #include <stdbool.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <limits.h>
- #include <semaphore.h>
- #include <nuttx/kmalloc.h>
- #include <nuttx/streams.h>
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* This configuration directory is used in environment variable processing
- * when we need to reference the user's home directory. There are no user
- * directories in NuttX so, by default, this always refers to the root
- * directory.
- */
- #ifndef CONFIG_LIB_HOMEDIR
- # define CONFIG_LIB_HOMEDIR "/"
- #endif
- /* If C std I/O buffering is not supported, then we don't need its semaphore
- * protection.
- */
- #ifdef CONFIG_STDIO_DISABLE_BUFFERING
- # define lib_sem_initialize(s)
- # define lib_take_semaphore(s)
- # define lib_give_semaphore(s)
- #endif
- /* The NuttX C library an be build in two modes: (1) as a standard, C-library
- * that can be used by normal, user-space applications, or (2) as a special,
- * kernel-mode C-library only used within the OS. If NuttX is not being
- * built as separated kernel- and user-space modules, then only the first
- * mode is supported.
- */
- #if !defined(CONFIG_BUILD_FLAT) && defined(__KERNEL__)
- /* Domain-specific allocations */
- # define lib_malloc(s) kmm_malloc(s)
- # define lib_zalloc(s) kmm_zalloc(s)
- # define lib_realloc(p,s) kmm_realloc(p,s)
- # define lib_memalign(p,s) kmm_memalign(p,s)
- # define lib_free(p) kmm_free(p)
- /* User-accessible allocations */
- # define lib_umalloc(s) kumm_malloc(s)
- # define lib_uzalloc(s) kumm_zalloc(s)
- # define lib_urealloc(p,s) kumm_realloc(p,s)
- # define lib_umemalign(p,s) kumm_memalign(p,s)
- # define lib_ufree(p) kumm_free(p)
- #else
- /* Domain-specific allocations */
- # define lib_malloc(s) malloc(s)
- # define lib_zalloc(s) zalloc(s)
- # define lib_realloc(p,s) realloc(p,s)
- # define lib_memalign(p,s) memalign(p,s)
- # define lib_free(p) free(p)
- /* User-accessible allocations */
- # define lib_umalloc(s) malloc(s)
- # define lib_uzalloc(s) zalloc(s)
- # define lib_urealloc(p,s) realloc(p,s)
- # define lib_umemalign(p,s) memalign(p,s)
- # define lib_ufree(p) free(p)
- #endif
- #define LIB_BUFLEN_UNKNOWN INT_MAX
- /****************************************************************************
- * Public Types
- ****************************************************************************/
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- #undef EXTERN
- #if defined(__cplusplus)
- #define EXTERN extern "C"
- extern "C"
- {
- #else
- #define EXTERN extern
- #endif
- /****************************************************************************
- * Public Function Prototypes
- ****************************************************************************/
- /* Defined in lib_streamsem.c */
- #if CONFIG_NFILE_STREAMS > 0
- void stream_semtake(FAR struct streamlist *list);
- void stream_semgive(FAR struct streamlist *list);
- #endif
- /* Defined in lib_dtoa.c */
- #ifdef CONFIG_LIBC_FLOATINGPOINT
- FAR char *__dtoa(double d, int mode, int ndigits, FAR int *decpt,
- FAR int *sign, FAR char **rve);
- #endif
- /* Defined in lib_fopen.c */
- int lib_mode2oflags(FAR const char *mode);
- /* Defined in lib_libfwrite.c */
- ssize_t lib_fwrite(FAR const void *ptr, size_t count, FAR FILE *stream);
- /* Defined in lib_libfread.c */
- ssize_t lib_fread(FAR void *ptr, size_t count, FAR FILE *stream);
- /* Defined in lib_libfgets.c */
- FAR char *lib_fgets(FAR char *buf, size_t buflen, FILE *stream,
- bool keepnl, bool consume);
- /* Defined in lib_libfflush.c */
- ssize_t lib_fflush(FAR FILE *stream, bool bforce);
- /* Defined in lib_rdflush.c */
- int lib_rdflush(FAR FILE *stream);
- /* Defined in lib_wrflush.c */
- int lib_wrflush(FAR FILE *stream);
- /* Defined in lib_sem.c */
- #ifndef CONFIG_STDIO_DISABLE_BUFFERING
- void lib_sem_initialize(FAR struct file_struct *stream);
- void lib_take_semaphore(FAR struct file_struct *stream);
- void lib_give_semaphore(FAR struct file_struct *stream);
- #endif
- /* Defined in lib_libgetbase.c */
- int lib_getbase(FAR const char *nptr, FAR const char **endptr);
- /* Defined in lib_skipspace.c */
- void lib_skipspace(FAR const char **pptr);
- /* Defined in lib_isbasedigit.c */
- bool lib_isbasedigit(int ch, int base, FAR int *value);
- /* Defined in lib_checkbase.c */
- int lib_checkbase(int base, FAR const char **pptr);
- /* Defined in lib_expi.c */
- #ifdef CONFIG_LIBM
- float lib_expif(size_t n);
- double lib_expi(size_t n);
- #endif
- /* Defined in lib_libsqrtapprox.c */
- #ifdef CONFIG_LIBM
- float lib_sqrtapprox(float x);
- #endif
- /* Defined in lib_parsehostfile.c */
- #ifdef CONFIG_NETDB_HOSTFILE
- struct hostent;
- ssize_t lib_parse_hostfile(FAR FILE *stream, FAR struct hostent *host,
- FAR char *buf, size_t buflen);
- #endif
- #ifndef CONFIG_DISABLE_ENVIRON
- int lib_restoredir(void);
- #endif
- #undef EXTERN
- #if defined(__cplusplus)
- }
- #endif
- #endif /* __LIBC_LIBC_H */
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