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libio: Add nonnull attribute for most FILE * arguments in stdio.h
During the review of a GCC analyzer test case, we found most stdio functions accepting a FILE * argument expect it to be nonnull and just segfault when the argument is NULL. Add nonnull attribute for them. fflush and fflush_unlocked are well defined when __stream is NULL so they are not touched. For fputs, fgets, fread, fwrite, fprintf, vfprintf, and their unlocked version, if __stream is empty but there is nothing to read or write, they did not segfault. But the standard disallow __stream to be empty here, so nonnull attribute is also added for them. Note that this may blow up some old code already subtly broken. Also add __nonnull for _chk variants and __fortify_function versions for them. Signed-off-by: Xi Ruoyao <xry111@xry111.site> Reviewed-by: Alejandro Colomar <alx@kernel.org> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Xi Ruoyao
Siddhesh Poyarekar
parent
6b695e5c62
commit
64b1a44183
@ -47,10 +47,12 @@ extern int __vsnprintf_chk (char *__restrict __s, size_t __n, int __flag,
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#if __USE_FORTIFY_LEVEL > 1
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extern int __fprintf_chk (FILE *__restrict __stream, int __flag,
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const char *__restrict __format, ...);
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const char *__restrict __format, ...)
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__nonnull ((1));
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extern int __printf_chk (int __flag, const char *__restrict __format, ...);
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extern int __vfprintf_chk (FILE *__restrict __stream, int __flag,
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const char *__restrict __format, __gnuc_va_list __ap);
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const char *__restrict __format,
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__gnuc_va_list __ap) __nonnull ((1));
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extern int __vprintf_chk (int __flag, const char *__restrict __format,
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__gnuc_va_list __ap);
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@ -103,7 +105,7 @@ extern char *__REDIRECT (__fgets_chk_warn,
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extern char *__fgets_chk (char *__restrict __s, size_t __size, int __n,
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FILE *__restrict __stream)
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__wur __attr_access ((__write_only__, 1, 3));
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__wur __attr_access ((__write_only__, 1, 3)) __nonnull ((4));
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extern size_t __REDIRECT (__fread_alias,
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(void *__restrict __ptr, size_t __size,
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@ -119,7 +121,7 @@ extern size_t __REDIRECT (__fread_chk_warn,
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extern size_t __fread_chk (void *__restrict __ptr, size_t __ptrlen,
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size_t __size, size_t __n,
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FILE *__restrict __stream) __wur;
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FILE *__restrict __stream) __wur __nonnull ((5));
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#ifdef __USE_GNU
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extern char *__REDIRECT_FORTIFY (__fgets_unlocked_alias,
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@ -135,7 +137,7 @@ extern char *__REDIRECT (__fgets_unlocked_chk_warn,
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extern char *__fgets_unlocked_chk (char *__restrict __s, size_t __size,
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int __n, FILE *__restrict __stream)
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__wur __attr_access ((__write_only__, 1, 3));
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__wur __attr_access ((__write_only__, 1, 3)) __nonnull ((4));
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#endif
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#ifdef __USE_MISC
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@ -154,7 +156,8 @@ extern size_t __REDIRECT (__fread_unlocked_chk_warn,
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extern size_t __fread_unlocked_chk (void *__restrict __ptr, size_t __ptrlen,
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size_t __size, size_t __n,
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FILE *__restrict __stream) __wur;
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FILE *__restrict __stream)
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__wur __nonnull ((5));
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#endif
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#endif /* bits/stdio2-decl.h. */
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@ -73,7 +73,7 @@ __NTH (vsnprintf (char *__restrict __s, size_t __n,
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#if __USE_FORTIFY_LEVEL > 1
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# ifdef __va_arg_pack
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__fortify_function int
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__fortify_function __nonnull ((1)) int
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fprintf (FILE *__restrict __stream, const char *__restrict __fmt, ...)
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{
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return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
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@ -102,7 +102,7 @@ vprintf (const char *__restrict __fmt, __gnuc_va_list __ap)
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#endif
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}
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__fortify_function int
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__fortify_function __nonnull ((1)) int
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vfprintf (FILE *__restrict __stream,
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const char *__restrict __fmt, __gnuc_va_list __ap)
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{
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@ -191,7 +191,8 @@ gets (char *__str)
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}
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#endif
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__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2) char *
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__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
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__nonnull ((3)) char *
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fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
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{
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size_t sz = __glibc_objsize (__s);
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@ -202,7 +203,7 @@ fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
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return __fgets_chk (__s, sz, __n, __stream);
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}
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__fortify_function __wur size_t
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__fortify_function __wur __nonnull ((4)) size_t
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fread (void *__restrict __ptr, size_t __size, size_t __n,
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FILE *__restrict __stream)
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{
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@ -215,7 +216,8 @@ fread (void *__restrict __ptr, size_t __size, size_t __n,
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}
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#ifdef __USE_GNU
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__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2) char *
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__fortify_function __wur __fortified_attr_access (__write_only__, 1, 2)
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__nonnull ((3)) char *
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fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
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{
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size_t sz = __glibc_objsize (__s);
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@ -229,7 +231,7 @@ fgets_unlocked (char *__restrict __s, int __n, FILE *__restrict __stream)
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#ifdef __USE_MISC
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# undef fread_unlocked
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__fortify_function __wur size_t
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__fortify_function __wur __nonnull ((4)) size_t
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fread_unlocked (void *__restrict __ptr, size_t __size, size_t __n,
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FILE *__restrict __stream)
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{
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148
libio/stdio.h
148
libio/stdio.h
@ -1,5 +1,6 @@
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/* Define ISO C stdio on top of C++ iostreams.
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Copyright (C) 1991-2023 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -278,7 +279,7 @@ extern FILE *__REDIRECT (fopen, (const char *__restrict __filename,
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extern FILE *__REDIRECT (freopen, (const char *__restrict __filename,
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const char *__restrict __modes,
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FILE *__restrict __stream), freopen64)
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__wur;
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__wur __nonnull ((3));
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# else
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# define fopen fopen64
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# define freopen freopen64
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@ -330,21 +331,22 @@ extern __FILE *open_wmemstream (wchar_t **__bufloc, size_t *__sizeloc) __THROW
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/* If BUF is NULL, make STREAM unbuffered.
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Else make it use buffer BUF, of size BUFSIZ. */
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extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
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extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW
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__nonnull ((1));
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/* Make STREAM use buffering mode MODE.
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If BUF is not NULL, use N bytes of it for buffering;
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else allocate an internal buffer N bytes long. */
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extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
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int __modes, size_t __n) __THROW;
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int __modes, size_t __n) __THROW __nonnull ((1));
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#ifdef __USE_MISC
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/* If BUF is NULL, make STREAM unbuffered.
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Else make it use SIZE bytes of BUF for buffering. */
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extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
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size_t __size) __THROW;
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size_t __size) __THROW __nonnull ((1));
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/* Make STREAM line-buffered. */
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extern void setlinebuf (FILE *__stream) __THROW;
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extern void setlinebuf (FILE *__stream) __THROW __nonnull ((1));
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#endif
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@ -353,7 +355,7 @@ extern void setlinebuf (FILE *__stream) __THROW;
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fprintf (FILE *__restrict __stream,
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const char *__restrict __format, ...);
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const char *__restrict __format, ...) __nonnull ((1));
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/* Write formatted output to stdout.
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This function is a possible cancellation point and therefore not
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@ -368,7 +370,7 @@ extern int sprintf (char *__restrict __s,
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int vfprintf (FILE *__restrict __s, const char *__restrict __format,
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__gnuc_va_list __arg);
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__gnuc_va_list __arg) __nonnull ((1));
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/* Write formatted output to stdout from argument list ARG.
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This function is a possible cancellation point and therefore not
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@ -418,7 +420,7 @@ extern int dprintf (int __fd, const char *__restrict __fmt, ...)
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fscanf (FILE *__restrict __stream,
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const char *__restrict __format, ...) __wur;
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const char *__restrict __format, ...) __wur __nonnull ((1));
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/* Read formatted input from stdin.
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This function is a possible cancellation point and therefore not
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@ -439,7 +441,7 @@ extern int sscanf (const char *__restrict __s,
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# ifdef __REDIRECT
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extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
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const char *__restrict __format, ...),
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__isoc23_fscanf) __wur;
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__isoc23_fscanf) __wur __nonnull ((1));
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extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
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__isoc23_scanf) __wur;
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extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
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@ -447,7 +449,8 @@ extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
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__isoc23_sscanf);
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# else
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extern int __isoc23_fscanf (FILE *__restrict __stream,
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const char *__restrict __format, ...) __wur;
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const char *__restrict __format, ...) __wur
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__nonnull ((1));
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extern int __isoc23_scanf (const char *__restrict __format, ...) __wur;
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extern int __isoc23_sscanf (const char *__restrict __s,
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const char *__restrict __format, ...) __THROW;
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@ -459,7 +462,7 @@ extern int __isoc23_sscanf (const char *__restrict __s,
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# ifdef __REDIRECT
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extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
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const char *__restrict __format, ...),
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__isoc99_fscanf) __wur;
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__isoc99_fscanf) __wur __nonnull ((1));
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extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
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__isoc99_scanf) __wur;
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extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
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@ -467,7 +470,8 @@ extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
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__isoc99_sscanf);
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# else
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extern int __isoc99_fscanf (FILE *__restrict __stream,
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const char *__restrict __format, ...) __wur;
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const char *__restrict __format, ...) __wur
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__nonnull ((1));
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extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
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extern int __isoc99_sscanf (const char *__restrict __s,
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const char *__restrict __format, ...) __THROW;
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@ -485,7 +489,7 @@ extern int __isoc99_sscanf (const char *__restrict __s,
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marked with __THROW. */
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extern int vfscanf (FILE *__restrict __s, const char *__restrict __format,
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__gnuc_va_list __arg)
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur __nonnull ((1));
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/* Read formatted input from stdin into argument list ARG.
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@ -508,7 +512,7 @@ extern int __REDIRECT (vfscanf,
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(FILE *__restrict __s,
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const char *__restrict __format, __gnuc_va_list __arg),
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__isoc23_vfscanf)
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur __nonnull ((1));
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extern int __REDIRECT (vscanf, (const char *__restrict __format,
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__gnuc_va_list __arg), __isoc23_vscanf)
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__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
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@ -520,7 +524,7 @@ extern int __REDIRECT_NTH (vsscanf,
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# elif !defined __REDIRECT
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extern int __isoc23_vfscanf (FILE *__restrict __s,
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const char *__restrict __format,
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__gnuc_va_list __arg) __wur;
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__gnuc_va_list __arg) __wur __nonnull ((1));
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extern int __isoc23_vscanf (const char *__restrict __format,
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__gnuc_va_list __arg) __wur;
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extern int __isoc23_vsscanf (const char *__restrict __s,
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@ -537,7 +541,7 @@ extern int __REDIRECT (vfscanf,
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(FILE *__restrict __s,
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const char *__restrict __format, __gnuc_va_list __arg),
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__isoc99_vfscanf)
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
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__attribute__ ((__format__ (__scanf__, 2, 0))) __wur __nonnull ((1));
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extern int __REDIRECT (vscanf, (const char *__restrict __format,
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__gnuc_va_list __arg), __isoc99_vscanf)
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__attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
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@ -549,7 +553,7 @@ extern int __REDIRECT_NTH (vsscanf,
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# elif !defined __REDIRECT
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extern int __isoc99_vfscanf (FILE *__restrict __s,
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const char *__restrict __format,
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__gnuc_va_list __arg) __wur;
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__gnuc_va_list __arg) __wur __nonnull ((1));
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extern int __isoc99_vscanf (const char *__restrict __format,
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__gnuc_va_list __arg) __wur;
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extern int __isoc99_vsscanf (const char *__restrict __s,
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@ -568,8 +572,8 @@ extern int __isoc99_vsscanf (const char *__restrict __s,
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These functions are possible cancellation points and therefore not
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marked with __THROW. */
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extern int fgetc (FILE *__stream);
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extern int getc (FILE *__stream);
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extern int fgetc (FILE *__stream) __nonnull ((1));
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extern int getc (FILE *__stream) __nonnull ((1));
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/* Read a character from stdin.
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@ -582,7 +586,7 @@ extern int getchar (void);
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These functions are possible cancellation points and therefore not
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marked with __THROW. */
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extern int getc_unlocked (FILE *__stream);
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extern int getc_unlocked (FILE *__stream) __nonnull ((1));
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extern int getchar_unlocked (void);
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#endif /* Use POSIX. */
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@ -593,7 +597,7 @@ extern int getchar_unlocked (void);
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int fgetc_unlocked (FILE *__stream);
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extern int fgetc_unlocked (FILE *__stream) __nonnull ((1));
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#endif /* Use MISC. */
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@ -604,8 +608,8 @@ extern int fgetc_unlocked (FILE *__stream);
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These functions is a possible cancellation point and therefore not
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marked with __THROW. */
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extern int fputc (int __c, FILE *__stream);
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extern int putc (int __c, FILE *__stream);
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extern int fputc (int __c, FILE *__stream) __nonnull ((2));
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extern int putc (int __c, FILE *__stream) __nonnull ((2));
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/* Write a character to stdout.
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@ -620,7 +624,7 @@ extern int putchar (int __c);
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int fputc_unlocked (int __c, FILE *__stream);
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extern int fputc_unlocked (int __c, FILE *__stream) __nonnull ((2));
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#endif /* Use MISC. */
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#ifdef __USE_POSIX199506
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@ -628,7 +632,7 @@ extern int fputc_unlocked (int __c, FILE *__stream);
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These functions are possible cancellation points and therefore not
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marked with __THROW. */
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extern int putc_unlocked (int __c, FILE *__stream);
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extern int putc_unlocked (int __c, FILE *__stream) __nonnull ((2));
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extern int putchar_unlocked (int __c);
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#endif /* Use POSIX. */
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@ -636,10 +640,10 @@ extern int putchar_unlocked (int __c);
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#if defined __USE_MISC \
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|| (defined __USE_XOPEN && !defined __USE_XOPEN2K)
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/* Get a word (int) from STREAM. */
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extern int getw (FILE *__stream);
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extern int getw (FILE *__stream) __nonnull ((1));
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/* Write a word (int) to STREAM. */
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extern int putw (int __w, FILE *__stream);
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extern int putw (int __w, FILE *__stream) __nonnull ((2));
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#endif
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@ -648,7 +652,7 @@ extern int putw (int __w, FILE *__stream);
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
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__wur __fortified_attr_access (__write_only__, 1, 2);
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__wur __fortified_attr_access (__write_only__, 1, 2) __nonnull ((3));
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#if __GLIBC_USE (DEPRECATED_GETS)
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/* Get a newline-terminated string from stdin, removing the newline.
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@ -672,7 +676,7 @@ extern char *gets (char *__s) __wur __attribute_deprecated__;
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therefore not marked with __THROW. */
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extern char *fgets_unlocked (char *__restrict __s, int __n,
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FILE *__restrict __stream) __wur
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__fortified_attr_access (__write_only__, 1, 2);
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__fortified_attr_access (__write_only__, 1, 2) __nonnull ((3));
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#endif
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@ -689,10 +693,10 @@ extern char *fgets_unlocked (char *__restrict __s, int __n,
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therefore not marked with __THROW. */
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extern __ssize_t __getdelim (char **__restrict __lineptr,
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size_t *__restrict __n, int __delimiter,
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FILE *__restrict __stream) __wur;
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||||
FILE *__restrict __stream) __wur __nonnull ((4));
|
||||
extern __ssize_t getdelim (char **__restrict __lineptr,
|
||||
size_t *__restrict __n, int __delimiter,
|
||||
FILE *__restrict __stream) __wur;
|
||||
FILE *__restrict __stream) __wur __nonnull ((4));
|
||||
|
||||
/* Like `getdelim', but reads up to a newline.
|
||||
|
||||
@ -702,7 +706,7 @@ extern __ssize_t getdelim (char **__restrict __lineptr,
|
||||
therefore not marked with __THROW. */
|
||||
extern __ssize_t getline (char **__restrict __lineptr,
|
||||
size_t *__restrict __n,
|
||||
FILE *__restrict __stream) __wur;
|
||||
FILE *__restrict __stream) __wur __nonnull ((3));
|
||||
#endif
|
||||
|
||||
|
||||
@ -710,7 +714,8 @@ extern __ssize_t getline (char **__restrict __lineptr,
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
|
||||
extern int fputs (const char *__restrict __s, FILE *__restrict __stream)
|
||||
__nonnull ((2));
|
||||
|
||||
/* Write a string, followed by a newline, to stdout.
|
||||
|
||||
@ -723,7 +728,7 @@ extern int puts (const char *__s);
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int ungetc (int __c, FILE *__stream);
|
||||
extern int ungetc (int __c, FILE *__stream) __nonnull ((2));
|
||||
|
||||
|
||||
/* Read chunks of generic data from STREAM.
|
||||
@ -731,13 +736,14 @@ extern int ungetc (int __c, FILE *__stream);
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern size_t fread (void *__restrict __ptr, size_t __size,
|
||||
size_t __n, FILE *__restrict __stream) __wur;
|
||||
size_t __n, FILE *__restrict __stream) __wur
|
||||
__nonnull((4));
|
||||
/* Write chunks of generic data to STREAM.
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern size_t fwrite (const void *__restrict __ptr, size_t __size,
|
||||
size_t __n, FILE *__restrict __s);
|
||||
size_t __n, FILE *__restrict __s) __nonnull((4));
|
||||
|
||||
#ifdef __USE_GNU
|
||||
/* This function does the same as `fputs' but does not lock the stream.
|
||||
@ -747,7 +753,7 @@ extern size_t fwrite (const void *__restrict __ptr, size_t __size,
|
||||
or due to the implementation it is a cancellation point and
|
||||
therefore not marked with __THROW. */
|
||||
extern int fputs_unlocked (const char *__restrict __s,
|
||||
FILE *__restrict __stream);
|
||||
FILE *__restrict __stream) __nonnull ((2));
|
||||
#endif
|
||||
|
||||
#ifdef __USE_MISC
|
||||
@ -758,9 +764,11 @@ extern int fputs_unlocked (const char *__restrict __s,
|
||||
or due to the implementation they are cancellation points and
|
||||
therefore not marked with __THROW. */
|
||||
extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
|
||||
size_t __n, FILE *__restrict __stream) __wur;
|
||||
size_t __n, FILE *__restrict __stream) __wur
|
||||
__nonnull ((4));
|
||||
extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size,
|
||||
size_t __n, FILE *__restrict __stream);
|
||||
size_t __n, FILE *__restrict __stream)
|
||||
__nonnull ((4));
|
||||
#endif
|
||||
|
||||
|
||||
@ -768,17 +776,18 @@ extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size,
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int fseek (FILE *__stream, long int __off, int __whence);
|
||||
extern int fseek (FILE *__stream, long int __off, int __whence)
|
||||
__nonnull ((1));
|
||||
/* Return the current position of STREAM.
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern long int ftell (FILE *__stream) __wur;
|
||||
extern long int ftell (FILE *__stream) __wur __nonnull ((1));
|
||||
/* Rewind to the beginning of STREAM.
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern void rewind (FILE *__stream);
|
||||
extern void rewind (FILE *__stream) __nonnull ((1));
|
||||
|
||||
/* The Single Unix Specification, Version 2, specifies an alternative,
|
||||
more adequate interface for the two functions above which deal with
|
||||
@ -791,18 +800,20 @@ extern void rewind (FILE *__stream);
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int fseeko (FILE *__stream, __off_t __off, int __whence);
|
||||
extern int fseeko (FILE *__stream, __off_t __off, int __whence)
|
||||
__nonnull ((1));
|
||||
/* Return the current position of STREAM.
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern __off_t ftello (FILE *__stream) __wur;
|
||||
extern __off_t ftello (FILE *__stream) __wur __nonnull ((1));
|
||||
# else
|
||||
# ifdef __REDIRECT
|
||||
extern int __REDIRECT (fseeko,
|
||||
(FILE *__stream, __off64_t __off, int __whence),
|
||||
fseeko64);
|
||||
extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
|
||||
fseeko64) __nonnull ((1));
|
||||
extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64)
|
||||
__nonnull ((1));
|
||||
# else
|
||||
# define fseeko fseeko64
|
||||
# define ftello ftello64
|
||||
@ -815,18 +826,21 @@ extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
|
||||
extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos)
|
||||
__nonnull ((1));
|
||||
/* Set STREAM's position.
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int fsetpos (FILE *__stream, const fpos_t *__pos);
|
||||
extern int fsetpos (FILE *__stream, const fpos_t *__pos) __nonnull ((1));
|
||||
#else
|
||||
# ifdef __REDIRECT
|
||||
extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
|
||||
fpos_t *__restrict __pos), fgetpos64);
|
||||
fpos_t *__restrict __pos), fgetpos64)
|
||||
__nonnull ((1));
|
||||
extern int __REDIRECT (fsetpos,
|
||||
(FILE *__stream, const fpos_t *__pos), fsetpos64);
|
||||
(FILE *__stream, const fpos_t *__pos), fsetpos64)
|
||||
__nonnull ((1));
|
||||
# else
|
||||
# define fgetpos fgetpos64
|
||||
# define fsetpos fsetpos64
|
||||
@ -834,24 +848,26 @@ extern int __REDIRECT (fsetpos,
|
||||
#endif
|
||||
|
||||
#ifdef __USE_LARGEFILE64
|
||||
extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
|
||||
extern __off64_t ftello64 (FILE *__stream) __wur;
|
||||
extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
|
||||
extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos);
|
||||
extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence)
|
||||
__nonnull ((1));
|
||||
extern __off64_t ftello64 (FILE *__stream) __wur __nonnull ((1));
|
||||
extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos)
|
||||
__nonnull ((1));
|
||||
extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos) __nonnull ((1));
|
||||
#endif
|
||||
|
||||
/* Clear the error and EOF indicators for STREAM. */
|
||||
extern void clearerr (FILE *__stream) __THROW;
|
||||
extern void clearerr (FILE *__stream) __THROW __nonnull ((1));
|
||||
/* Return the EOF indicator for STREAM. */
|
||||
extern int feof (FILE *__stream) __THROW __wur;
|
||||
extern int feof (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
/* Return the error indicator for STREAM. */
|
||||
extern int ferror (FILE *__stream) __THROW __wur;
|
||||
extern int ferror (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
|
||||
#ifdef __USE_MISC
|
||||
/* Faster versions when locking is not required. */
|
||||
extern void clearerr_unlocked (FILE *__stream) __THROW;
|
||||
extern int feof_unlocked (FILE *__stream) __THROW __wur;
|
||||
extern int ferror_unlocked (FILE *__stream) __THROW __wur;
|
||||
extern void clearerr_unlocked (FILE *__stream) __THROW __nonnull ((1));
|
||||
extern int feof_unlocked (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
extern int ferror_unlocked (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
#endif
|
||||
|
||||
|
||||
@ -864,12 +880,12 @@ extern void perror (const char *__s) __COLD;
|
||||
|
||||
#ifdef __USE_POSIX
|
||||
/* Return the system file descriptor for STREAM. */
|
||||
extern int fileno (FILE *__stream) __THROW __wur;
|
||||
extern int fileno (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
#endif /* Use POSIX. */
|
||||
|
||||
#ifdef __USE_MISC
|
||||
/* Faster version when locking is not required. */
|
||||
extern int fileno_unlocked (FILE *__stream) __THROW __wur;
|
||||
extern int fileno_unlocked (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
#endif
|
||||
|
||||
|
||||
@ -878,7 +894,7 @@ extern int fileno_unlocked (FILE *__stream) __THROW __wur;
|
||||
|
||||
This function is a possible cancellation point and therefore not
|
||||
marked with __THROW. */
|
||||
extern int pclose (FILE *__stream);
|
||||
extern int pclose (FILE *__stream) __nonnull ((1));
|
||||
|
||||
/* Create a new stream connected to a pipe running the given command.
|
||||
|
||||
@ -922,14 +938,14 @@ extern int obstack_vprintf (struct obstack *__restrict __obstack,
|
||||
/* These are defined in POSIX.1:1996. */
|
||||
|
||||
/* Acquire ownership of STREAM. */
|
||||
extern void flockfile (FILE *__stream) __THROW;
|
||||
extern void flockfile (FILE *__stream) __THROW __nonnull ((1));
|
||||
|
||||
/* Try to acquire ownership of STREAM but do not block if it is not
|
||||
possible. */
|
||||
extern int ftrylockfile (FILE *__stream) __THROW __wur;
|
||||
extern int ftrylockfile (FILE *__stream) __THROW __wur __nonnull ((1));
|
||||
|
||||
/* Relinquish the ownership granted for STREAM. */
|
||||
extern void funlockfile (FILE *__stream) __THROW;
|
||||
extern void funlockfile (FILE *__stream) __THROW __nonnull ((1));
|
||||
#endif /* POSIX */
|
||||
|
||||
#if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
|
||||
|
||||
Loading…
Reference in New Issue
Block a user