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feat(esp_libc): picolibc: add fopencookie implementation

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This commit is contained in:
Alexey Lapshin
2026-01-20 17:41:00 +07:00
parent 326342db45
commit 51f1861448
3 changed files with 80 additions and 1 deletions
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16
components/esp_libc/platform_include/stdio.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2024-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -40,6 +40,20 @@ FILE *funopen(const void *cookie,
void flockfile(FILE *);
void funlockfile(FILE *);
FILE *open_memstream(char **, size_t *);
typedef ssize_t cookie_read_function_t(void *cookie, char *buf, size_t n);
typedef ssize_t cookie_write_function_t(void *cookie, const char *buf, size_t n);
typedef int cookie_seek_function_t(void *cookie, __off_t *off, int whence);
typedef int cookie_close_function_t(void *cookie);
typedef struct {
/* These four struct member names are dictated by Linux; hopefully,
they don't conflict with any macros. */
cookie_read_function_t *read;
cookie_write_function_t *write;
cookie_seek_function_t *seek;
cookie_close_function_t *close;
} cookie_io_functions_t;
FILE *fopencookie(void *cookie, const char *mode, cookie_io_functions_t functions);
#endif
#ifdef __cplusplus