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@@ -1,1117 +0,0 @@
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-
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- * This file is part of the Linux-8086 C library and is distributed
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- * under the GNU Library General Public License.
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- */
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-
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-
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- *
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- * Updates:
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- * 29-Sep-2000 W. Greathouse 1. fgetc copying beyond end of buffer
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- * 2. stdout needs flushed when input requested on
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- * stdin.
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- * 3. bufend was set incorrectly to 4 bytes beyond
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- * bufin (sizeof a pointer) instead of BUFSIZ.
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- * This resulted in 4 byte buffers for full
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- * buffered stdin and stdout and an 8 byte
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- * buffer for the unbuffered stderr!
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- */
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-
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-
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- * Feb 27, 2001 Manuel Novoa III
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- *
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- * Most of the core functionality has been completely rewritten.
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- * A number of functions have been added as well, as mandated by C89.
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- *
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- * An extension function "fsfopen" has been added:
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- * Open a file using an automatically (stack) or statically allocated FILE.
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- * The FILE * returned behaves just as any other FILE * with respect to the
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- * stdio functions, but be aware of the following:
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- * NOTE: The buffer used for the file is FILE's builtin 2-byte buffer, so
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- * setting a new buffer is probably advisable.
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- * NOTE: This function is primarily intended to be used for stack-allocated
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- * FILEs when uClibc stdio has no dynamic memory support.
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- * For the statically allocated case, it is probably better to increase
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- * the value of FIXED_STREAMS in stdio.c.
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- * WARNING: If allocated on the stack, make sure you call fclose before the
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- * stack memory is reclaimed!
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- */
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-
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-
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-#include <stdlib.h>
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-#include <stdio.h>
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-#include <unistd.h>
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-#include <fcntl.h>
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-#include <sys/types.h>
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-#include <malloc.h>
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-#include <errno.h>
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-#include <string.h>
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-#include <assert.h>
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-#include <limits.h>
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-
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-extern off_t _uClibc_fwrite(const unsigned char *buf, off_t bytes, FILE *fp);
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-extern off_t _uClibc_fread(unsigned char *buf, off_t bytes, FILE *fp);
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-
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-
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-extern FILE *__fopen __P((__const char *__restrict __filename, int __fd,
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- FILE *__restrict __stream, __const char *__restrict __mode,
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- int extra_modes));
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-
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-
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-#define READING(fp) (fp->bufstart < fp->bufread)
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-#define WRITING(fp) (fp->bufwrite > fp->bufstart)
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-
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-#define READABLE(fp) (fp->bufread != 0)
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-#define WRITEABLE(fp) (fp->bufwrite != 0)
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-#define EOF_OR_ERROR(fp) (fp->mode & (__MODE_EOF | __MODE_ERR))
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-
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-
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-
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-
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-
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- * FIXED_STREAMS must be >= 3 and FIXED_BUFFERS must be >= 2.
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- * As a feature, these can be increased, although this is probably
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- * only useful if DISABLE_DYNAMIC is set to 1 below.
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- */
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-
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-#define FIXED_STREAMS 3
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-#define FIXED_BUFFERS 2
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-
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-
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- * As a feature, you can build uClibc with no dynamic allocation done
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- * by the stdio package. Just set DISABLE_DYNAMIC to nonzero. Note that
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- * use of asprintf, getdelim, or getline will pull malloc into the link.
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- *
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- * Note: You can't trust FOPEN_MAX if DISABLE_DYNAMIC != 0.
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- */
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-#define DISABLE_DYNAMIC 0
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-
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-
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- * As a feature, you can try to allow setvbuf calls after file operations.
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- * Setting FLEXIBLE_SETVBUF to nonzero will cause setvbuf to try to fflush
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- * any buffered writes or sync the file position for buffered reads. If it
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- * is successful, the buffer change can then take place.
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- */
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-#define FLEXIBLE_SETVBUF 0
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-
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-
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-#if DISABLE_DYNAMIC != 0
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-#undef malloc
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-#undef free
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-#define malloc(x) 0
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-#define free(x)
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-#endif
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-
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-extern FILE *__IO_list;
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-extern FILE *_free_file_list;
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-extern char _free_buffer_index;
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-extern FILE _stdio_streams[FIXED_STREAMS];
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-extern unsigned char _fixed_buffers[FIXED_BUFFERS * BUFSIZ];
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-
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-extern unsigned char *_alloc_stdio_buffer(size_t size);
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-extern void _free_stdio_buffer_of_file(FILE *fp);
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-extern void _free_stdio_stream(FILE *fp);
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-
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-#ifdef L__alloc_stdio_buffer
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-unsigned char *_alloc_stdio_buffer(size_t size)
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-{
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- unsigned char *buf;
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-
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- if ((size == BUFSIZ) && (_free_buffer_index < FIXED_BUFFERS)) {
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- buf = _fixed_buffers + ((unsigned int)_free_buffer_index) * BUFSIZ;
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- _free_buffer_index = *buf;
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- return buf;
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- }
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- return malloc(size);
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-}
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-#endif
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-
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-#ifdef L__free_stdio_buffer_of_file
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-void _free_stdio_buffer_of_file(FILE *fp)
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-{
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- unsigned char *buf;
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-
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- if (!(fp->mode & __MODE_FREEBUF)) {
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- return;
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- }
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- fp->mode &= ~(__MODE_FREEBUF);
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- buf = fp->bufstart;
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-
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- if ((buf >= _fixed_buffers)
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- && (buf < _fixed_buffers + (FIXED_BUFFERS * BUFSIZ))) {
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- *buf = _free_buffer_index;
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- _free_buffer_index = (buf - _fixed_buffers)/BUFSIZ;
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- return;
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- }
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- free(buf);
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-}
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-#endif
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-
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-#ifdef L__stdio_init
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-
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-#if FIXED_BUFFERS < 2
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-#error FIXED_BUFFERS must be >= 2
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-#endif
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-
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-#if FIXED_BUFFERS >= UCHAR_MAX
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-#error FIXED_BUFFERS must be < UCHAR_MAX
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-#endif
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-
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-#define bufin (_fixed_buffers)
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-#define bufout (_fixed_buffers + BUFSIZ)
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-#define buferr (_stdio_streams[2].unbuf)
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-
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-unsigned char _fixed_buffers[FIXED_BUFFERS * BUFSIZ];
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-
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-#if FIXED_STREAMS < 3
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-#error FIXED_STREAMS must be >= 3
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-#endif
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-
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-FILE _stdio_streams[FIXED_STREAMS] = {
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- {bufin, bufin, 0, bufin, bufin + BUFSIZ,
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- _stdio_streams + 1,
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- 0, _IOFBF | __MODE_FREEFIL | __MODE_FREEBUF | __MODE_TIED },
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- {bufout, 0, bufout, bufout, bufout + BUFSIZ,
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- _stdio_streams + 2,
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- 1, _IOFBF | __MODE_FREEFIL | __MODE_FREEBUF | __MODE_TIED },
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- {buferr, 0, buferr, buferr, buferr + 1,
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- NULL,
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- 2, _IONBF | __MODE_FREEFIL }
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-};
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-
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-FILE *stdin = _stdio_streams + 0;
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-FILE *stdout = _stdio_streams + 1;
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-FILE *stderr = _stdio_streams + 2;
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-
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-
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- * Note: the following forces linking of the __init_stdio function if
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- * any of the stdio functions are used since they all call fflush directly
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- * or indirectly.
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- */
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-FILE *__IO_list = _stdio_streams;
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-
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-FILE *_free_file_list = 0;
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-char _free_buffer_index = FIXED_BUFFERS;
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-
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-
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- * __stdio_flush_buffers is automatically when exiting if stdio is used.
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- * See misc/internals/__uClibc_main.c and and stdlib/atexit.c.
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- */
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-void __stdio_flush_buffers(void)
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-{
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- FILE *fp;
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- for (fp = __IO_list; fp; fp = fp->next) {
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- if (WRITEABLE(fp)) {
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-
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- * that calls to _exit() and abort() will not block */
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- int opts;
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- opts = fcntl(fp->fd, F_GETFL);
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- fcntl(fp->fd, F_SETFL, opts|O_NONBLOCK);
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- fflush(fp);
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- fcntl(fp->fd, F_SETFL, opts);
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- }
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- }
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-}
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-
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-
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- * __init_stdio is automatically by __uClibc_main if stdio is used.
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- */
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-void __init_stdio(void)
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-{
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-#if (FIXED_BUFFERS > 2) || (FIXED_STREAMS > 3)
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- int i;
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-#endif
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-#if FIXED_BUFFERS > 2
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- _free_buffer_index = 2;
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- for ( i = 2 ; i < FIXED_BUFFERS ; i++ ) {
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- _fixed_buffers[i*BUFSIZ] = i;
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- }
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-#endif
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-#if FIXED_STREAMS > 3
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- _free_file_list = _stdio_streams + 3;
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- for ( i = 3 ; i < FIXED_STREAMS-1 ; i++ ) {
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- _stdio_streams[i].next = _stdio_streams + i + 1;
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- }
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- _stdio_streams[i].next = 0;
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-#endif
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-
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-#if _IOFBF != 0 || _IOLBF != 1
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-#error Assumption violated -- values of _IOFBF and/or _IOLBF
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-
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-#endif
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-
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-
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- _stdio_streams[1].mode |= isatty(1);
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-}
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-#endif
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-
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-#ifdef L_fputc
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-int fputc(int c, FILE *fp)
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-{
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- unsigned char buf[1];
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-
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- *buf = (unsigned char) c;
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-
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- if (_uClibc_fwrite(buf, 1, fp)) {
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- return (unsigned char) c;
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- }
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- return EOF;
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-}
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-#endif
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-
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-#ifdef L_fgetc
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-int fgetc(FILE *fp)
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-{
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- unsigned char buf[1];
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-
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- if (_uClibc_fread(buf, 1, fp)) {
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- return *buf;
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- }
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- return EOF;
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-}
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-#endif
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-
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-#ifdef L_fflush
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-int fflush(FILE *fp)
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-{
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- int rv;
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-
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- rv = 0;
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-
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- if (fp == NULL) {
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- for (fp = __IO_list; fp; fp = fp->next) {
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- if (WRITEABLE(fp) && fflush(fp)) {
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- rv = EOF;
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- }
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- }
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- } else if (WRITING(fp)) {
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- _uClibc_fwrite(NULL, 0, fp);
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- if (fp->mode & __MODE_ERR) {
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- rv = -1;
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- }
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- } else if (!WRITEABLE(fp)) {
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-
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- * According to info, glibc returns an error when the file is opened
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- * in read-only mode.
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- * ANSI says behavior in this case is undefined but also says you
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- * shouldn't flush a stream you were reading from.
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- */
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- __set_errno(EBADF);
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- rv = -1;
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- }
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-
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- return rv;
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-}
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-#endif
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-
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-#ifdef L_fgets
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-
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-char *fgets(char *s, int count, FILE *fp)
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-{
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- int ch;
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- char *p;
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-
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- p = s;
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- while (count-- > 1) {
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- ch = getc(fp);
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- if (ch == EOF) {
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- break;
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- }
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- *p++ = ch;
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- if (ch == '\n') {
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- break;
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- }
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- }
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- if (ferror(fp) || (s == p)) {
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- return 0;
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- }
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- *p = 0;
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- return s;
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-}
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-#endif
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-
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-#ifdef L_gets
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-link_warning (gets, "the `gets' function is dangerous and should not be used.")
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-char *gets(char *str)
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-{
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-
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- * Strictly speaking, this implementation is incorrect as the number
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- * of chars gets can read should be unlimited. However, I can't
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- * imagine anyone wanting to gets() into a buffer bigger than INT_MAX.
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- *
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- * Besides, this function is inherently unsafe and shouldn't be used.
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- */
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- return fgets(str, INT_MAX, stdin);
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-}
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-#endif
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-
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-#ifdef L_fputs
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-int fputs(const char *str, FILE *fp)
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-{
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- int n;
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-
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- n = strlen(str);
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-
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- _uClibc_fwrite((const unsigned char *)str, n, fp);
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- if (fp->mode & __MODE_ERR) {
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- n = EOF;
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- }
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- return n;
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-}
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-#endif
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-
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-#ifdef L_puts
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-int puts(const char *str)
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-{
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- int n;
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-
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- n = fputs(str, stdout);
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- if (fputc('\n', stdout) == EOF) {
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- return EOF;
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- }
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- return n + 1;
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-}
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-#endif
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-
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-#ifdef L_fread
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-
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- * fread will often be used to read in large chunks of data calling read()
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- * directly can be a big win in this case. Beware also fgetc calls this
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- * function to fill the buffer.
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- */
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-size_t fread(buf, size, nelm, fp)
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-void *buf;
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-size_t size;
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-size_t nelm;
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-FILE *fp;
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-{
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- unsigned char *p;
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- unsigned char *q;
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-
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-#warning TODO: handle possible overflow of size * nelm
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- p = (unsigned char *) buf;
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- q = p + (size * nelm);
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-
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- while ((p < q) && !EOF_OR_ERROR(fp)) {
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- p += _uClibc_fread(p, q - p, fp);
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- }
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- return (p - (unsigned char *) buf)/size;
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-}
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-#endif
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-
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-#ifdef L__uClibc_fread
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-off_t _uClibc_fread(unsigned char *buf, off_t bytes, FILE *fp)
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-{
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- unsigned char *p;
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- off_t len;
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-
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- if (!READABLE(fp)) {
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- fp->mode |= __MODE_ERR;
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- } else if (WRITING(fp)) {
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- fflush(fp);
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- } else if (fp->mode & stdout->mode & __MODE_TIED) {
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- fflush(stdout);
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- }
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- if (EOF_OR_ERROR(fp) || (bytes <= 0)) {
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- return 0;
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- }
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-
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- p = (unsigned char *) buf;
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-
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- if (fp->mode & __MODE_UNGOT) {
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- fp->mode ^= __MODE_UNGOT;
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- *p++ = fp->ungot;
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- --bytes;
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- }
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-
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- FROM_BUF:
|
|
|
- len = fp->bufread - fp->bufpos;
|
|
|
- if (len > bytes) {
|
|
|
- len = bytes;
|
|
|
- }
|
|
|
-
|
|
|
- bytes -= len;
|
|
|
- while (len--) {
|
|
|
- *p++ = *fp->bufpos++;
|
|
|
- }
|
|
|
-
|
|
|
- if (bytes && !EOF_OR_ERROR(fp)) {
|
|
|
- if (bytes < fp->bufend - fp->bufstart) {
|
|
|
- fp->bufpos = fp->bufread = fp->bufstart;
|
|
|
- fp->bufread += _uClibc_fread(fp->bufstart,
|
|
|
- fp->bufend - fp->bufstart, fp);
|
|
|
- goto FROM_BUF;
|
|
|
- }
|
|
|
-
|
|
|
- len = read(fp->fd, p, (unsigned) bytes);
|
|
|
- if (len < 0) {
|
|
|
- fp->mode |= __MODE_ERR;
|
|
|
- } else {
|
|
|
- p += len;
|
|
|
- if (len == 0) {
|
|
|
- fp->mode |= __MODE_EOF;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return (p - (unsigned char *)buf);
|
|
|
-
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fwrite
|
|
|
-
|
|
|
- * Like fread, fwrite will often be used to write out large chunks of
|
|
|
- * data; calling write() directly can be a big win in this case.
|
|
|
- *
|
|
|
- * But first we check to see if there's space in the buffer.
|
|
|
- */
|
|
|
-size_t fwrite(buf, size, nelm, fp)
|
|
|
-const void *buf;
|
|
|
-size_t size;
|
|
|
-size_t nelm;
|
|
|
-FILE *fp;
|
|
|
-{
|
|
|
- off_t bytes;
|
|
|
-
|
|
|
-#warning TODO: handle possible overflow for bytes
|
|
|
- bytes = size * nelm;
|
|
|
-
|
|
|
- bytes = _uClibc_fwrite((const unsigned char *)buf, bytes, fp);
|
|
|
-
|
|
|
- return bytes/size;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L__uClibc_fwrite
|
|
|
-
|
|
|
- * If buf == NULL, fflush.
|
|
|
- * If buf != NULL, (fflush and) write
|
|
|
- * Returns number of chars written from fp buffer _OR_ from buf.
|
|
|
- */
|
|
|
-
|
|
|
-off_t _uClibc_fwrite(const unsigned char *buf, off_t bytes, FILE *fp)
|
|
|
-{
|
|
|
- unsigned char *p;
|
|
|
- int rv, had_newline;
|
|
|
-
|
|
|
-
|
|
|
- * Fail if stream isn't writable, if we were reading and get an error
|
|
|
- * changing over to write mode (ie. can't update stream position),
|
|
|
- * or if the stream was already in an error state.
|
|
|
- */
|
|
|
- if (!WRITEABLE(fp)) {
|
|
|
- fp->mode |= __MODE_ERR;
|
|
|
- } else if (READING(fp)) {
|
|
|
- fseek(fp, 0, SEEK_CUR);
|
|
|
- } else if (READABLE(fp)) {
|
|
|
- fp->bufread = fp->bufstart;
|
|
|
- }
|
|
|
- if (EOF_OR_ERROR(fp)) {
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- p = (unsigned char *)buf;
|
|
|
- if (p && (fp->bufpos + bytes <= fp->bufend)) {
|
|
|
- had_newline = 0;
|
|
|
- while (bytes--) {
|
|
|
- if (*p == '\n') {
|
|
|
- had_newline = 1;
|
|
|
- }
|
|
|
- *fp->bufpos++ = *p++;
|
|
|
- }
|
|
|
- if (fp->bufpos < fp->bufend) {
|
|
|
- fp->bufwrite = fp->bufend;
|
|
|
- if ((fp->mode & __MODE_BUF) == _IOLBF) {
|
|
|
- fp->bufwrite = fp->bufpos;
|
|
|
- if (had_newline) {
|
|
|
- goto FFLUSH;
|
|
|
- }
|
|
|
- }
|
|
|
- goto DONE;
|
|
|
- }
|
|
|
- FFLUSH:
|
|
|
-
|
|
|
- buf = fp->bufpos - (p - (unsigned char *)buf);
|
|
|
- p = NULL;
|
|
|
- }
|
|
|
- if (!p) {
|
|
|
- p = fp->bufstart;
|
|
|
- bytes = fp->bufpos - p;
|
|
|
- fp->bufpos = fp->bufwrite = p;
|
|
|
- } else if (fp->bufpos > fp->bufstart) {
|
|
|
- _uClibc_fwrite(NULL, 0, fp);
|
|
|
- if (ferror(fp)) {
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- while (bytes) {
|
|
|
- if ((rv = write(fp->fd, p, bytes)) < 0) {
|
|
|
- rv = 0;
|
|
|
- break;
|
|
|
- }
|
|
|
- p += rv;
|
|
|
- bytes -= rv;
|
|
|
- }
|
|
|
- if (bytes) {
|
|
|
- fp->mode |= __MODE_ERR;
|
|
|
- }
|
|
|
-
|
|
|
- DONE:
|
|
|
- return (p - (unsigned char *)buf);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_rewind
|
|
|
-void rewind(fp)
|
|
|
-FILE *fp;
|
|
|
-{
|
|
|
- clearerr(fp);
|
|
|
- fseek(fp, 0, SEEK_SET);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fseek
|
|
|
-int fseek(FILE *fp, long int offset, int ref)
|
|
|
-{
|
|
|
-#if SEEK_SET != 0 || SEEK_CUR != 1 || SEEK_END != 2
|
|
|
-#error Assumption violated -- values of SEEK_SET, SEEK_CUR, SEEK_END
|
|
|
-#endif
|
|
|
-
|
|
|
- if ((ref < 0) || (ref > 2)) {
|
|
|
- __set_errno(EINVAL);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- if (WRITING(fp)) {
|
|
|
- fflush(fp);
|
|
|
-
|
|
|
- } else if (READING(fp)) {
|
|
|
- if (ref == SEEK_CUR) {
|
|
|
-
|
|
|
- offset -= (fp->bufread - fp->bufpos);
|
|
|
- if (fp->mode & __MODE_UNGOT) {
|
|
|
- --offset;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if ((fp->mode & __MODE_ERR) ||
|
|
|
- (((ref != SEEK_CUR) || offset) && (lseek(fp->fd, offset, ref) < 0))) {
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- if (READING(fp)) {
|
|
|
- fp->bufpos = fp->bufread = fp->bufstart;
|
|
|
- }
|
|
|
- fp->mode &= ~(__MODE_EOF | __MODE_UNGOT);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_ftell
|
|
|
-long ftell(fp)
|
|
|
-FILE *fp;
|
|
|
-{
|
|
|
-
|
|
|
- off_t pos;
|
|
|
-
|
|
|
- pos = lseek(fp->fd, 0, SEEK_CUR);
|
|
|
- if (pos < 0) {
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- if (WRITING(fp)) {
|
|
|
- pos += (fp->bufpos - fp->bufstart);
|
|
|
- } else if (READING(fp)) {
|
|
|
- pos -= (fp->bufread - fp->bufpos);
|
|
|
- if (fp->mode & __MODE_UNGOT) {
|
|
|
- --pos;
|
|
|
- }
|
|
|
- if (pos < 0) {
|
|
|
- __set_errno(EIO);
|
|
|
- pos = -1;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return pos;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L__fopen
|
|
|
-
|
|
|
- * This Fopen is all three of fopen, fdopen and freopen. The macros in
|
|
|
- * stdio.h show the other names.
|
|
|
- */
|
|
|
-static __inline FILE *_alloc_stdio_stream(void)
|
|
|
-{
|
|
|
- FILE *fp;
|
|
|
-
|
|
|
- if (_free_file_list) {
|
|
|
- fp = _free_file_list;
|
|
|
- _free_file_list = fp->next;
|
|
|
- } else if (!(fp = malloc(sizeof(FILE)))) {
|
|
|
- return 0;
|
|
|
- }
|
|
|
- fp->mode = __MODE_FREEFIL | _IOFBF;
|
|
|
-
|
|
|
- fp->bufstart = fp->unbuf;
|
|
|
- fp->bufend = fp->unbuf + sizeof(fp->unbuf);
|
|
|
- return fp;
|
|
|
-}
|
|
|
-
|
|
|
-FILE *__fopen(fname, fd, fp, mode, extra_modes)
|
|
|
-const char *fname;
|
|
|
-int fd;
|
|
|
-FILE *fp;
|
|
|
-const char *mode;
|
|
|
-int extra_modes;
|
|
|
-{
|
|
|
- FILE *nfp;
|
|
|
- unsigned char *p;
|
|
|
- int open_mode;
|
|
|
- int cur_mode;
|
|
|
-
|
|
|
- nfp = fp;
|
|
|
-
|
|
|
-
|
|
|
- switch (*mode++) {
|
|
|
- case 'r':
|
|
|
- open_mode = O_RDONLY | extra_modes;
|
|
|
- break;
|
|
|
- case 'w':
|
|
|
- open_mode = (O_WRONLY | O_CREAT | O_TRUNC | extra_modes);
|
|
|
- break;
|
|
|
- case 'a':
|
|
|
- open_mode = (O_WRONLY | O_CREAT | O_APPEND | extra_modes);
|
|
|
- break;
|
|
|
- default:
|
|
|
- __set_errno(EINVAL);
|
|
|
- goto _fopen_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if ((*mode == 'b')) {
|
|
|
- ++mode;
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
-#if O_RDONLY != 0 || O_WRONLY != 1 || O_RDWR != 2
|
|
|
-#error Assumption violated concerning open mode constants!
|
|
|
-#endif
|
|
|
-
|
|
|
- if (*mode == '+') {
|
|
|
- ++mode;
|
|
|
- open_mode &= ~(O_RDONLY | O_WRONLY);
|
|
|
- open_mode |= O_RDWR;
|
|
|
- }
|
|
|
-
|
|
|
- while (*mode) {
|
|
|
- if (*mode == 'x') {
|
|
|
- open_mode |= O_EXCL;
|
|
|
- }
|
|
|
- ++mode;
|
|
|
- }
|
|
|
-
|
|
|
- if (fp == 0) {
|
|
|
- if (!(nfp = _alloc_stdio_stream())) {
|
|
|
- return 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (fname) {
|
|
|
- fd = open(fname, open_mode, 0666);
|
|
|
- } else {
|
|
|
-#if O_ACCMODE != 3 || O_RDONLY != 0 || O_WRONLY != 1 || O_RDWR != 2
|
|
|
-#error Assumption violated - mode constants
|
|
|
-#endif
|
|
|
- cur_mode = fcntl(fd, F_GETFL);
|
|
|
- if (cur_mode == -1) {
|
|
|
- fd = -1;
|
|
|
- } else if (!(cur_mode & O_RDWR)
|
|
|
- && ((cur_mode ^ open_mode) & O_ACCMODE)) {
|
|
|
- __set_errno(EINVAL);
|
|
|
- fd = -1;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (fd < 0) {
|
|
|
- _fopen_ERROR:
|
|
|
- if (nfp) {
|
|
|
- _free_stdio_stream(nfp);
|
|
|
- }
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- nfp->fd = fd;
|
|
|
-
|
|
|
- if (fp == 0) {
|
|
|
- nfp->next = __IO_list;
|
|
|
- __IO_list = nfp;
|
|
|
-
|
|
|
- if ((p = _alloc_stdio_buffer(BUFSIZ)) != 0) {
|
|
|
- nfp->bufstart = p;
|
|
|
- nfp->bufend = p + BUFSIZ;
|
|
|
- nfp->mode |= __MODE_FREEBUF;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- nfp->bufpos = nfp->bufstart;
|
|
|
- nfp->mode |= isatty(fd);
|
|
|
- nfp->bufread = nfp->bufwrite = 0;
|
|
|
- if (!(open_mode & O_WRONLY)) {
|
|
|
- nfp->bufread = nfp->bufstart;
|
|
|
- }
|
|
|
- if (open_mode & (O_WRONLY | O_RDWR)) {
|
|
|
- nfp->bufwrite = nfp->bufstart;
|
|
|
- }
|
|
|
-
|
|
|
- return nfp;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fclose
|
|
|
-int fclose(fp)
|
|
|
-FILE *fp;
|
|
|
-{
|
|
|
- FILE *prev;
|
|
|
- FILE *ptr;
|
|
|
- int rv;
|
|
|
-
|
|
|
- rv = 0;
|
|
|
- if (WRITING(fp)) {
|
|
|
- rv = fflush(fp);
|
|
|
- }
|
|
|
- if (close(fp->fd)) {
|
|
|
- rv = EOF;
|
|
|
- }
|
|
|
-
|
|
|
- prev = 0;
|
|
|
- for (ptr = __IO_list; ptr ; ptr = ptr->next) {
|
|
|
- if (ptr == fp) {
|
|
|
- if (prev == 0) {
|
|
|
- __IO_list = fp->next;
|
|
|
- } else {
|
|
|
- prev->next = fp->next;
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- prev = ptr;
|
|
|
- }
|
|
|
-
|
|
|
- _free_stdio_stream(fp);
|
|
|
-
|
|
|
- return rv;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L__free_stdio_stream
|
|
|
-
|
|
|
-void _free_stdio_stream(FILE *fp)
|
|
|
-{
|
|
|
- _free_stdio_buffer_of_file(fp);
|
|
|
-
|
|
|
- if (!(fp->mode & __MODE_FREEFIL)) {
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- if ((fp >= _stdio_streams) && (fp < _stdio_streams + FIXED_STREAMS)) {
|
|
|
- assert( (fp - _stdio_streams) % ((_stdio_streams+1) -_stdio_streams)
|
|
|
- == 0 );
|
|
|
- fp->next = _free_file_list;
|
|
|
- _free_file_list = fp;
|
|
|
- return;
|
|
|
- }
|
|
|
- free(fp);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_setbuffer
|
|
|
-void setbuffer(FILE *fp, char *buf, size_t size)
|
|
|
-{
|
|
|
- int mode;
|
|
|
-
|
|
|
- mode = _IOFBF;
|
|
|
- if (!buf) {
|
|
|
- mode = _IONBF;
|
|
|
- }
|
|
|
- setvbuf(fp, buf, mode, size);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_setvbuf
|
|
|
-int setvbuf(FILE *fp, char *ubuf, int mode, size_t size)
|
|
|
-{
|
|
|
- unsigned char *buf = ubuf;
|
|
|
- int allocated_buf_flag;
|
|
|
-
|
|
|
- if ((mode < 0) || (mode > 2)) {
|
|
|
- return EOF;
|
|
|
- }
|
|
|
-
|
|
|
-#if FLEXIBLE_SETVBUF
|
|
|
-
|
|
|
-
|
|
|
- if (fseek(fp, 0, SEEK_CUR)) {
|
|
|
- return EOF;
|
|
|
- }
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-
|
|
|
- if ((mode == _IONBF) || (size < 1)) {
|
|
|
- size = 1;
|
|
|
- buf = fp->unbuf;
|
|
|
- }
|
|
|
-
|
|
|
- fp->mode &= ~(__MODE_BUF);
|
|
|
- fp->mode |= mode;
|
|
|
-
|
|
|
- allocated_buf_flag = 0;
|
|
|
- if ((!buf) && (size != (fp->bufend - fp->bufstart))) {
|
|
|
-
|
|
|
- allocated_buf_flag = __MODE_FREEBUF;
|
|
|
- if (!(buf = _alloc_stdio_buffer(size))) {
|
|
|
- return EOF;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (buf && (buf != fp->bufstart)) {
|
|
|
- _free_stdio_buffer_of_file(fp);
|
|
|
- fp->mode |= allocated_buf_flag;
|
|
|
- fp->bufstart = buf;
|
|
|
- fp->bufend = buf + size;
|
|
|
- fp->bufpos = fp->bufstart;
|
|
|
- if (READABLE(fp)) {
|
|
|
- fp->bufread = fp->bufstart;
|
|
|
- }
|
|
|
- if (WRITEABLE(fp)) {
|
|
|
- fp->bufwrite = fp->bufstart;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_setbuf
|
|
|
-void setbuf(FILE *fp, char *buf)
|
|
|
-{
|
|
|
- int mode;
|
|
|
-
|
|
|
- mode = _IOFBF;
|
|
|
- if (!buf) {
|
|
|
- mode = _IONBF;
|
|
|
- }
|
|
|
- setvbuf(fp, buf, mode, BUFSIZ);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_setlinebuf
|
|
|
-void setlinebuf(FILE *fp)
|
|
|
-{
|
|
|
- setvbuf(fp, NULL, _IOLBF, BUFSIZ);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_ungetc
|
|
|
-
|
|
|
- * NOTE: Only one character of pushback is guaranteed, although sometimes
|
|
|
- * it is possible to do more. You have 1 plus as many characters of pushback
|
|
|
- * as have been read since that last buffer-fill.
|
|
|
- */
|
|
|
-int ungetc(c, fp)
|
|
|
-int c;
|
|
|
-FILE *fp;
|
|
|
-{
|
|
|
- unsigned char *p;
|
|
|
-
|
|
|
-
|
|
|
- * already filled, then return EOF */
|
|
|
-
|
|
|
- * This can only happen if an fgetc triggered a read (that filled
|
|
|
- * the buffer for case 2 above) and then we ungetc 3 chars.
|
|
|
- */
|
|
|
- if (!READABLE(fp) || (fp->mode & (__MODE_UNGOT | __MODE_ERR))
|
|
|
- || (c == EOF) ) {
|
|
|
- return EOF;
|
|
|
- }
|
|
|
-
|
|
|
- if (WRITING(fp)) {
|
|
|
- fflush(fp);
|
|
|
- }
|
|
|
-
|
|
|
- if (fp->bufpos > fp->bufstart) {
|
|
|
- p = --fp->bufpos;
|
|
|
- } else if (fp->bufread == fp->bufpos) {
|
|
|
- p = fp->bufread++;
|
|
|
- } else {
|
|
|
- fp->mode |= __MODE_UNGOT;
|
|
|
- p = &(fp->ungot);
|
|
|
- }
|
|
|
- fp->mode &= ~(__MODE_EOF);
|
|
|
-
|
|
|
- if (*p != (unsigned char) c) {
|
|
|
- *p = (unsigned char) c;
|
|
|
- }
|
|
|
-
|
|
|
- return c;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fopen
|
|
|
-#undef fopen
|
|
|
-FILE *fopen(const char *__restrict filename,
|
|
|
- const char *__restrict mode)
|
|
|
-{
|
|
|
- return __fopen(filename, -1, NULL, mode, 0);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_freopen
|
|
|
-FILE *freopen(__const char *__restrict filename,
|
|
|
- __const char *__restrict mode, FILE *__restrict fp)
|
|
|
-{
|
|
|
-
|
|
|
- if (WRITING(fp)) {
|
|
|
- fflush(fp);
|
|
|
- }
|
|
|
- close(fp->fd);
|
|
|
- fp->mode &= (__MODE_FREEFIL | __MODE_FREEBUF);
|
|
|
- fp->mode |= _IOFBF;
|
|
|
-
|
|
|
- return __fopen(filename, -1, fp, mode, 0);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fsfopen
|
|
|
-FILE *fsfopen(__const char *__restrict filename,
|
|
|
- __const char *__restrict mode, FILE *__restrict fp)
|
|
|
-{
|
|
|
- fp->mode = _IOFBF;
|
|
|
- fp->bufstart = fp->unbuf;
|
|
|
- fp->bufend = fp->unbuf + sizeof(fp->unbuf);
|
|
|
-
|
|
|
- return __fopen(filename, -1, fp, mode, 0);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fdopen
|
|
|
-#undef fdopen
|
|
|
-FILE *fdopen(int fd, __const char *mode)
|
|
|
-{
|
|
|
- return __fopen(NULL, fd, NULL, mode, 0);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-
|
|
|
-#ifdef L_getc
|
|
|
-#undef getc
|
|
|
-int getc(FILE *stream)
|
|
|
-{
|
|
|
- return(((stream)->bufpos >= (stream)->bufread)? fgetc(stream) :
|
|
|
- (*(stream)->bufpos++));
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_putc
|
|
|
-#undef putc
|
|
|
-int putc(int c, FILE *stream)
|
|
|
-{
|
|
|
- return(((stream)->bufpos >= (stream)->bufwrite)? fputc((c), (stream)) :
|
|
|
- (unsigned char) (*(stream)->bufpos++ = (c)) );
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_getchar
|
|
|
-#undef getchar
|
|
|
-int getchar(void)
|
|
|
-{
|
|
|
- return getc(stdin);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_putchar
|
|
|
-#undef putchar
|
|
|
-int putchar(int c)
|
|
|
-{
|
|
|
- return putc(c, stdout);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_clearerr
|
|
|
-#undef clearerr
|
|
|
-void clearerr(FILE *fp)
|
|
|
-{
|
|
|
- fp->mode &= ~(__MODE_EOF | __MODE_ERR);
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_feof
|
|
|
-#undef feof
|
|
|
-int feof(FILE *fp)
|
|
|
-{
|
|
|
- return fp->mode & __MODE_EOF;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_ferror
|
|
|
-#undef ferror
|
|
|
-int ferror(FILE *fp)
|
|
|
-{
|
|
|
- return fp->mode & __MODE_ERR;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fileno
|
|
|
-int fileno(FILE *fp)
|
|
|
-{
|
|
|
- return fp->fd;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fgetpos
|
|
|
-int fgetpos(FILE *fp, fpos_t *pos)
|
|
|
-{
|
|
|
- fpos_t p;
|
|
|
-
|
|
|
- if (!pos) {
|
|
|
- __set_errno(EINVAL);
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- if ((p = ftell(fp)) < 0) {
|
|
|
- return -1;
|
|
|
- }
|
|
|
-
|
|
|
- *pos = p;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fsetpos
|
|
|
-int fsetpos(FILE *fp, __const fpos_t *pos)
|
|
|
-{
|
|
|
- if (pos) {
|
|
|
- return fseek(fp, *pos, SEEK_SET);
|
|
|
- }
|
|
|
- __set_errno(EINVAL);
|
|
|
- return EOF;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef L_fopen64
|
|
|
-#ifdef __UCLIBC_HAVE_LFS__
|
|
|
-#ifndef O_LARGEFILE
|
|
|
-#define O_LARGEFILE 0100000
|
|
|
-#endif
|
|
|
-FILE *fopen64(const char *__restrict filename,
|
|
|
- const char *__restrict mode)
|
|
|
-{
|
|
|
- return __fopen(filename, -1, NULL, mode, O_LARGEFILE);
|
|
|
-}
|
|
|
-#endif
|
|
|
-#endif
|
|
|
-
|