e1833e54a7
When annotating the netinet directory aosp/2552567, we realize the argment s for vsnprintf family can be null only if the buffer size is 0. So we correct them and add some tests to verify our assumption. Bugs: b/245972273 Test: adb shell Change-Id: I51063286272be0daee0d7c1453a374b1f5674481
312 lines
14 KiB
C
312 lines
14 KiB
C
/* $OpenBSD: stdio.h,v 1.35 2006/01/13 18:10:09 miod Exp $ */
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/* $NetBSD: stdio.h,v 1.18 1996/04/25 18:29:21 jtc Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stdio.h 5.17 (Berkeley) 6/3/91
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*/
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#ifndef _STDIO_H_
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#define _STDIO_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <bits/seek_constants.h>
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#if __ANDROID_API__ < 24
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#include <bits/struct_file.h>
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#endif
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__BEGIN_DECLS
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typedef off_t fpos_t;
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typedef off64_t fpos64_t;
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struct __sFILE;
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typedef struct __sFILE FILE;
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#if __ANDROID_API__ >= 23
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extern FILE* _Nonnull stdin __INTRODUCED_IN(23);
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extern FILE* _Nonnull stdout __INTRODUCED_IN(23);
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extern FILE* _Nonnull stderr __INTRODUCED_IN(23);
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/* C99 and earlier plus current C++ standards say these must be macros. */
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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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#else
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/* Before M the actual symbols for stdin and friends had different names. */
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extern FILE __sF[] __REMOVED_IN(23);
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#define stdin (&__sF[0])
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#define stdout (&__sF[1])
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#define stderr (&__sF[2])
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#endif
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/*
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* The following three definitions are for ANSI C, which took them
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* from System V, which brilliantly took internal interface macros and
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* made them official arguments to setvbuf(), without renaming them.
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* Hence, these ugly _IOxxx names are *supposed* to appear in user code.
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*
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* Although numbered as their counterparts above, the implementation
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* does not rely on this.
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*/
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#define _IOFBF 0 /* setvbuf should set fully buffered */
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#define _IOLBF 1 /* setvbuf should set line buffered */
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#define _IONBF 2 /* setvbuf should set unbuffered */
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#define BUFSIZ 1024 /* size of buffer used by setbuf */
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#define EOF (-1)
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/*
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* FOPEN_MAX is a minimum maximum, and is the number of streams that
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* stdio can provide without attempting to allocate further resources
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* (which could fail). Do not use this for anything.
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*/
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#define FOPEN_MAX 20
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#define FILENAME_MAX 4096
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#define L_tmpnam 4096
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#define TMP_MAX 308915776
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void clearerr(FILE* _Nonnull __fp);
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int fclose(FILE* _Nonnull __fp);
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int feof(FILE* _Nonnull __fp);
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int ferror(FILE* _Nonnull __fp);
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int fflush(FILE* _Nullable __fp);
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int fgetc(FILE* _Nonnull __fp);
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char* _Nullable fgets(char* _Nonnull __buf, int __size, FILE* _Nonnull __fp);
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int fprintf(FILE* _Nonnull __fp , const char* _Nonnull __fmt, ...) __printflike(2, 3);
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int fputc(int __ch, FILE* _Nonnull __fp);
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int fputs(const char* _Nonnull __s, FILE* _Nonnull __fp);
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size_t fread(void* _Nonnull __buf, size_t __size, size_t __count, FILE* _Nonnull __fp);
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int fscanf(FILE* _Nonnull __fp, const char* _Nonnull __fmt, ...) __scanflike(2, 3);
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size_t fwrite(const void* _Nonnull __buf, size_t __size, size_t __count, FILE* _Nonnull __fp);
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int getc(FILE* _Nonnull __fp);
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int getchar(void);
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ssize_t getdelim(char* _Nullable * _Nonnull __line_ptr, size_t* _Nonnull __line_length_ptr, int __delimiter, FILE* _Nonnull __fp) __INTRODUCED_IN(18);
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ssize_t getline(char* _Nullable * _Nonnull __line_ptr, size_t* _Nonnull __line_length_ptr, FILE* _Nonnull __fp) __INTRODUCED_IN(18);
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void perror(const char* _Nullable __msg);
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int printf(const char* _Nonnull __fmt, ...) __printflike(1, 2);
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int putc(int __ch, FILE* _Nonnull __fp);
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int putchar(int __ch);
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int puts(const char* _Nonnull __s);
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int remove(const char* _Nonnull __path);
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void rewind(FILE* _Nonnull __fp);
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int scanf(const char* _Nonnull __fmt, ...) __scanflike(1, 2);
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void setbuf(FILE* _Nonnull __fp, char* _Nullable __buf);
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int setvbuf(FILE* _Nonnull __fp, char* _Nullable __buf, int __mode, size_t __size);
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int sscanf(const char* _Nonnull __s, const char* _Nonnull __fmt, ...) __scanflike(2, 3);
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int ungetc(int __ch, FILE* _Nonnull __fp);
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int vfprintf(FILE* _Nonnull __fp, const char* _Nonnull __fmt, va_list __args) __printflike(2, 0);
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int vprintf(const char* _Nonnull __fp, va_list __args) __printflike(1, 0);
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int dprintf(int __fd, const char* _Nonnull __fmt, ...) __printflike(2, 3) __INTRODUCED_IN(21);
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int vdprintf(int __fd, const char* _Nonnull __fmt, va_list __args) __printflike(2, 0) __INTRODUCED_IN(21);
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ < 201112L) || \
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(defined(__cplusplus) && __cplusplus <= 201103L)
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char* _Nullable gets(char* _Nonnull __buf) __attribute__((deprecated("gets is unsafe, use fgets instead")));
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#endif
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int sprintf(char* __BIONIC_COMPLICATED_NULLNESS __s, const char* _Nonnull __fmt, ...)
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__printflike(2, 3) __warnattr_strict("sprintf is often misused; please use snprintf");
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int vsprintf(char* __BIONIC_COMPLICATED_NULLNESS __s, const char* _Nonnull __fmt, va_list __args)
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__printflike(2, 0) __warnattr_strict("vsprintf is often misused; please use vsnprintf");
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char* _Nullable tmpnam(char* _Nullable __s)
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__warnattr("tmpnam is unsafe, use mkstemp or tmpfile instead");
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#define P_tmpdir "/tmp/" /* deprecated */
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char* _Nullable tempnam(const char* _Nullable __dir, const char* _Nullable __prefix)
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__warnattr("tempnam is unsafe, use mkstemp or tmpfile instead");
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/**
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* [rename(2)](http://man7.org/linux/man-pages/man2/rename.2.html) changes
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* the name or location of a file.
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*
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* Returns 0 on success, and returns -1 and sets `errno` on failure.
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*/
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int rename(const char* _Nonnull __old_path, const char* _Nonnull __new_path);
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/**
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* [renameat(2)](http://man7.org/linux/man-pages/man2/renameat.2.html) changes
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* the name or location of a file, interpreting relative paths using an fd.
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*
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* Returns 0 on success, and returns -1 and sets `errno` on failure.
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*/
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int renameat(int __old_dir_fd, const char* _Nonnull __old_path, int __new_dir_fd, const char* _Nonnull __new_path);
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#if defined(__USE_GNU)
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/**
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* Flag for [renameat2(2)](http://man7.org/linux/man-pages/man2/renameat2.2.html)
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* to fail if the new path already exists.
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*/
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#define RENAME_NOREPLACE (1<<0)
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/**
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* Flag for [renameat2(2)](http://man7.org/linux/man-pages/man2/renameat2.2.html)
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* to atomically exchange the two paths.
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*/
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#define RENAME_EXCHANGE (1<<1)
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/**
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* Flag for [renameat2(2)](http://man7.org/linux/man-pages/man2/renameat2.2.html)
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* to create a union/overlay filesystem object.
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*/
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#define RENAME_WHITEOUT (1<<2)
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/**
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* [renameat2(2)](http://man7.org/linux/man-pages/man2/renameat2.2.html) changes
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* the name or location of a file, interpreting relative paths using an fd,
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* with optional `RENAME_` flags.
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*
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* Returns 0 on success, and returns -1 and sets `errno` on failure.
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*/
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int renameat2(int __old_dir_fd, const char* _Nonnull __old_path, int __new_dir_fd, const char* _Nonnull __new_path, unsigned __flags) __INTRODUCED_IN(30);
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#endif
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int fseek(FILE* _Nonnull __fp, long __offset, int __whence);
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long ftell(FILE* _Nonnull __fp);
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/* See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md */
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#if defined(__USE_FILE_OFFSET64)
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int fgetpos(FILE* _Nonnull __fp, fpos_t* _Nonnull __pos) __RENAME(fgetpos64) __INTRODUCED_IN(24);
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int fsetpos(FILE* _Nonnull __fp, const fpos_t* _Nonnull __pos) __RENAME(fsetpos64) __INTRODUCED_IN(24);
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int fseeko(FILE* _Nonnull __fp, off_t __offset, int __whence) __RENAME(fseeko64) __INTRODUCED_IN(24);
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off_t ftello(FILE* _Nonnull __fp) __RENAME(ftello64) __INTRODUCED_IN(24);
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# if defined(__USE_BSD)
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/* If __read_fn and __write_fn are both nullptr, it will cause EINVAL */
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FILE* _Nullable funopen(const void* _Nullable __cookie,
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int (* __BIONIC_COMPLICATED_NULLNESS __read_fn)(void* _Nonnull, char* _Nonnull, int),
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int (* __BIONIC_COMPLICATED_NULLNESS __write_fn)(void* _Nonnull, const char* _Nonnull, int),
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fpos_t (* _Nullable __seek_fn)(void* _Nonnull, fpos_t, int),
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int (* _Nullable __close_fn)(void* _Nonnull)) __RENAME(funopen64) __INTRODUCED_IN(24);
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# endif
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#else
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int fgetpos(FILE* _Nonnull __fp, fpos_t* _Nonnull __pos);
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int fsetpos(FILE* _Nonnull __fp, const fpos_t* _Nonnull __pos);
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int fseeko(FILE* _Nonnull __fp, off_t __offset, int __whence);
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off_t ftello(FILE* _Nonnull __fp);
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# if defined(__USE_BSD)
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/* If __read_fn and __write_fn are both nullptr, it will cause EINVAL */
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FILE* _Nullable funopen(const void* _Nullable __cookie,
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int (* __BIONIC_COMPLICATED_NULLNESS __read_fn)(void* _Nonnull, char* _Nonnull, int),
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int (* __BIONIC_COMPLICATED_NULLNESS __write_fn)(void* _Nonnull, const char* _Nonnull, int),
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fpos_t (* _Nullable __seek_fn)(void* _Nonnull, fpos_t, int),
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int (* _Nullable __close_fn)(void* _Nonnull));
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# endif
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#endif
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int fgetpos64(FILE* _Nonnull __fp, fpos64_t* _Nonnull __pos) __INTRODUCED_IN(24);
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int fsetpos64(FILE* _Nonnull __fp, const fpos64_t* _Nonnull __pos) __INTRODUCED_IN(24);
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int fseeko64(FILE* _Nonnull __fp, off64_t __offset, int __whence) __INTRODUCED_IN(24);
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off64_t ftello64(FILE* _Nonnull __fp) __INTRODUCED_IN(24);
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#if defined(__USE_BSD)
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/* If __read_fn and __write_fn are both nullptr, it will cause EINVAL */
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FILE* _Nullable funopen64(const void* _Nullable __cookie,
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int (* __BIONIC_COMPLICATED_NULLNESS __read_fn)(void* _Nonnull, char* _Nonnull, int),
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int (* __BIONIC_COMPLICATED_NULLNESS __write_fn)(void* _Nonnull, const char* _Nonnull, int),
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fpos64_t (* _Nullable __seek_fn)(void* _Nonnull, fpos64_t, int),
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int (* _Nullable __close_fn)(void* _Nonnull)) __INTRODUCED_IN(24);
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#endif
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FILE* _Nullable fopen(const char* _Nonnull __path, const char* _Nonnull __mode);
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FILE* _Nullable fopen64(const char* _Nonnull __path, const char* _Nonnull __mode) __INTRODUCED_IN(24);
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FILE* _Nullable freopen(const char* _Nullable __path, const char* _Nonnull __mode, FILE* _Nonnull __fp);
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FILE* _Nullable freopen64(const char* _Nullable __path, const char* _Nonnull __mode, FILE* _Nonnull __fp) __INTRODUCED_IN(24);
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FILE* _Nullable tmpfile(void);
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FILE* _Nullable tmpfile64(void) __INTRODUCED_IN(24);
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int snprintf(char* __BIONIC_COMPLICATED_NULLNESS __buf, size_t __size, const char* _Nonnull __fmt, ...) __printflike(3, 4);
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int vfscanf(FILE* _Nonnull __fp, const char* _Nonnull __fmt, va_list __args) __scanflike(2, 0);
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int vscanf(const char* _Nonnull __fmt , va_list __args) __scanflike(1, 0);
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int vsnprintf(char* __BIONIC_COMPLICATED_NULLNESS __buf, size_t __size, const char* _Nonnull __fmt, va_list __args) __printflike(3, 0);
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int vsscanf(const char* _Nonnull __s, const char* _Nonnull __fmt, va_list __args) __scanflike(2, 0);
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#define L_ctermid 1024 /* size for ctermid() */
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char* _Nonnull ctermid(char* _Nullable __buf) __INTRODUCED_IN(26);
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FILE* _Nullable fdopen(int __fd, const char* _Nonnull __mode);
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int fileno(FILE* _Nonnull __fp);
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int pclose(FILE* _Nonnull __fp);
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FILE* _Nullable popen(const char* _Nonnull __command, const char* _Nonnull __mode);
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void flockfile(FILE* _Nonnull __fp);
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int ftrylockfile(FILE* _Nonnull __fp);
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void funlockfile(FILE* _Nonnull __fp);
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int getc_unlocked(FILE* _Nonnull __fp);
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int getchar_unlocked(void);
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int putc_unlocked(int __ch, FILE* _Nonnull __fp);
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int putchar_unlocked(int __ch);
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FILE* _Nullable fmemopen(void* _Nullable __buf, size_t __size, const char* _Nonnull __mode) __INTRODUCED_IN(23);
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FILE* _Nullable open_memstream(char* _Nonnull * _Nonnull __ptr, size_t* _Nonnull __size_ptr) __INTRODUCED_IN(23);
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#if defined(__USE_BSD) || defined(__BIONIC__) /* Historically bionic exposed these. */
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int asprintf(char* _Nullable * _Nonnull __s_ptr, const char* _Nonnull __fmt, ...) __printflike(2, 3);
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char* _Nullable fgetln(FILE* _Nonnull __fp, size_t* _Nonnull __length_ptr);
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int fpurge(FILE* _Nonnull __fp);
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void setbuffer(FILE* _Nonnull __fp, char* _Nullable __buf, int __size);
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int setlinebuf(FILE* _Nonnull __fp);
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int vasprintf(char* _Nullable * _Nonnull __s_ptr, const char* _Nonnull __fmt, va_list __args) __printflike(2, 0);
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void clearerr_unlocked(FILE* _Nonnull __fp) __INTRODUCED_IN(23);
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int feof_unlocked(FILE* _Nonnull __fp) __INTRODUCED_IN(23);
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int ferror_unlocked(FILE* _Nonnull __fp) __INTRODUCED_IN(23);
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int fileno_unlocked(FILE* _Nonnull __fp) __INTRODUCED_IN(24);
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#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
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#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
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#endif
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#if defined(__USE_BSD)
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int fflush_unlocked(FILE* _Nullable __fp) __INTRODUCED_IN(28);
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int fgetc_unlocked(FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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int fputc_unlocked(int __ch, FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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size_t fread_unlocked(void* _Nonnull __buf, size_t __size, size_t __count, FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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size_t fwrite_unlocked(const void* _Nonnull __buf, size_t __size, size_t __count, FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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#endif
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#if defined(__USE_GNU)
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int fputs_unlocked(const char* _Nonnull __s, FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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char* _Nullable fgets_unlocked(char* _Nonnull __buf, int __size, FILE* _Nonnull __fp) __INTRODUCED_IN(28);
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#endif
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#if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
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#include <bits/fortify/stdio.h>
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#endif
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__END_DECLS
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#endif
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