mirror of
https://github.com/fluencelabs/musl
synced 2025-04-25 07:12:15 +00:00
061843340f
notes added by maintainer: this function is a GNU extension. it was chosen over the similar BSD function funopen because the latter depends on fpos_t being an arithmetic type as part of its public API, conflicting with our definition of fpos_t and with the intent that it be an opaque type. it was accepted for inclusion because, despite not being widely used, it is usually very difficult to extricate software using it from the dependency on it. calling pattern for the read and write callbacks is not likely to match glibc or other implementations, but should work with any reasonable callbacks. in particular the read function is never called without at least one byte being needed to satisfy its caller, so that spurious blocking is not introduced. contracts for what callbacks called from inside libc/stdio can do are always complicated, and at some point still need to be specified explicitly. at the very least, the callbacks must return or block indefinitely (they cannot perform nonlocal exits) and they should not make calls to stdio using their own FILE as an argument.
218 lines
5.6 KiB
C
218 lines
5.6 KiB
C
#ifndef _STDIO_H
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#define _STDIO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#define __NEED_FILE
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#define __NEED___isoc_va_list
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#define __NEED_size_t
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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#define __NEED_ssize_t
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#define __NEED_off_t
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#define __NEED_va_list
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#endif
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#include <bits/alltypes.h>
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#ifdef __cplusplus
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#define NULL 0L
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#else
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#define NULL ((void*)0)
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#endif
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#undef EOF
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#define EOF (-1)
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#undef SEEK_SET
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#undef SEEK_CUR
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#undef SEEK_END
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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#define _IOFBF 0
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#define _IOLBF 1
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#define _IONBF 2
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#define BUFSIZ 1024
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#define FILENAME_MAX 4096
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#define FOPEN_MAX 1000
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#define TMP_MAX 10000
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#define L_tmpnam 20
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typedef union _G_fpos64_t {
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char __opaque[16];
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double __align;
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} fpos_t;
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extern FILE *const stdin;
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extern FILE *const stdout;
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extern FILE *const stderr;
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#define stdin (stdin)
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#define stdout (stdout)
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#define stderr (stderr)
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FILE *fopen(const char *__restrict, const char *__restrict);
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FILE *freopen(const char *__restrict, const char *__restrict, FILE *__restrict);
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int fclose(FILE *);
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int remove(const char *);
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int rename(const char *, const char *);
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int feof(FILE *);
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int ferror(FILE *);
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int fflush(FILE *);
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void clearerr(FILE *);
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int fseek(FILE *, long, int);
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long ftell(FILE *);
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void rewind(FILE *);
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int fgetpos(FILE *__restrict, fpos_t *__restrict);
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int fsetpos(FILE *, const fpos_t *);
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size_t fread(void *__restrict, size_t, size_t, FILE *__restrict);
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size_t fwrite(const void *__restrict, size_t, size_t, FILE *__restrict);
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int fgetc(FILE *);
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int getc(FILE *);
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int getchar(void);
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int ungetc(int, FILE *);
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int fputc(int, FILE *);
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int putc(int, FILE *);
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int putchar(int);
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char *fgets(char *__restrict, int, FILE *__restrict);
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#if __STDC_VERSION__ < 201112L
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char *gets(char *);
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#endif
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int fputs(const char *__restrict, FILE *__restrict);
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int puts(const char *);
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int printf(const char *__restrict, ...);
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int fprintf(FILE *__restrict, const char *__restrict, ...);
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int sprintf(char *__restrict, const char *__restrict, ...);
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int snprintf(char *__restrict, size_t, const char *__restrict, ...);
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int vprintf(const char *__restrict, __isoc_va_list);
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int vfprintf(FILE *__restrict, const char *__restrict, __isoc_va_list);
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int vsprintf(char *__restrict, const char *__restrict, __isoc_va_list);
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int vsnprintf(char *__restrict, size_t, const char *__restrict, __isoc_va_list);
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int scanf(const char *__restrict, ...);
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int fscanf(FILE *__restrict, const char *__restrict, ...);
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int sscanf(const char *__restrict, const char *__restrict, ...);
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int vscanf(const char *__restrict, __isoc_va_list);
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int vfscanf(FILE *__restrict, const char *__restrict, __isoc_va_list);
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int vsscanf(const char *__restrict, const char *__restrict, __isoc_va_list);
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void perror(const char *);
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int setvbuf(FILE *__restrict, char *__restrict, int, size_t);
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void setbuf(FILE *__restrict, char *__restrict);
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char *tmpnam(char *);
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FILE *tmpfile(void);
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#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
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|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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FILE *fmemopen(void *__restrict, size_t, const char *__restrict);
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FILE *open_memstream(char **, size_t *);
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FILE *fdopen(int, const char *);
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FILE *popen(const char *, const char *);
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int pclose(FILE *);
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int fileno(FILE *);
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int fseeko(FILE *, off_t, int);
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off_t ftello(FILE *);
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int dprintf(int, const char *__restrict, ...);
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int vdprintf(int, const char *__restrict, __isoc_va_list);
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void flockfile(FILE *);
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int ftrylockfile(FILE *);
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void funlockfile(FILE *);
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int getc_unlocked(FILE *);
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int getchar_unlocked(void);
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int putc_unlocked(int, FILE *);
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int putchar_unlocked(int);
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ssize_t getdelim(char **__restrict, size_t *__restrict, int, FILE *__restrict);
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ssize_t getline(char **__restrict, size_t *__restrict, FILE *__restrict);
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int renameat(int, const char *, int, const char *);
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char *ctermid(char *);
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#define L_ctermid 20
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
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|| defined(_BSD_SOURCE)
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#define P_tmpdir "/tmp"
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char *tempnam(const char *, const char *);
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define L_cuserid 20
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char *cuserid(char *);
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void setlinebuf(FILE *);
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void setbuffer(FILE *, char *, size_t);
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int fgetc_unlocked(FILE *);
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int fputc_unlocked(int, FILE *);
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int fflush_unlocked(FILE *);
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size_t fread_unlocked(void *, size_t, size_t, FILE *);
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size_t fwrite_unlocked(const void *, size_t, size_t, FILE *);
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void clearerr_unlocked(FILE *);
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int feof_unlocked(FILE *);
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int ferror_unlocked(FILE *);
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int fileno_unlocked(FILE *);
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int getw(FILE *);
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int putw(int, FILE *);
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char *fgetln(FILE *, size_t *);
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int asprintf(char **, const char *, ...);
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int vasprintf(char **, const char *, __isoc_va_list);
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#endif
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#ifdef _GNU_SOURCE
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char *fgets_unlocked(char *, int, FILE *);
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int fputs_unlocked(const char *, FILE *);
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typedef ssize_t (cookie_read_function_t)(void *, char *, size_t);
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typedef ssize_t (cookie_write_function_t)(void *, const char *, size_t);
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typedef int (cookie_seek_function_t)(void *, off_t *, int);
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typedef int (cookie_close_function_t)(void *);
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typedef struct {
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cookie_read_function_t *read;
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cookie_write_function_t *write;
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cookie_seek_function_t *seek;
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cookie_close_function_t *close;
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} cookie_io_functions_t;
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FILE *fopencookie(void *, const char *, cookie_io_functions_t);
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#endif
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#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
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#define tmpfile64 tmpfile
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#define fopen64 fopen
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#define freopen64 freopen
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#define fseeko64 fseeko
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#define ftello64 ftello
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#define fgetpos64 fgetpos
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#define fsetpos64 fsetpos
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#define fpos64_t fpos_t
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#define off64_t off_t
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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