[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/libio/wfileops.c b/ap/libc/glibc/glibc-2.22/libio/wfileops.c
new file mode 100644
index 0000000..99f9c8f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/libio/wfileops.c
@@ -0,0 +1,1117 @@
+/* Copyright (C) 1993-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Ulrich Drepper <drepper@cygnus.com>.
+ Based on the single byte version by Per Bothner <bothner@cygnus.com>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>.
+
+ As a special exception, if you link the code in this file with
+ files compiled with a GNU compiler to produce an executable,
+ that does not cause the resulting executable to be covered by
+ the GNU Lesser General Public License. This exception does not
+ however invalidate any other reasons why the executable file
+ might be covered by the GNU Lesser General Public License.
+ This exception applies to code released by its copyright holders
+ in files containing the exception. */
+
+#include <assert.h>
+#include <libioP.h>
+#include <wchar.h>
+#include <gconv.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+#ifndef _LIBC
+# define _IO_new_do_write _IO_do_write
+# define _IO_new_file_attach _IO_file_attach
+# define _IO_new_file_close_it _IO_file_close_it
+# define _IO_new_file_finish _IO_file_finish
+# define _IO_new_file_fopen _IO_file_fopen
+# define _IO_new_file_init _IO_file_init
+# define _IO_new_file_setbuf _IO_file_setbuf
+# define _IO_new_file_sync _IO_file_sync
+# define _IO_new_file_overflow _IO_file_overflow
+# define _IO_new_file_seekoff _IO_file_seekoff
+# define _IO_new_file_underflow _IO_file_underflow
+# define _IO_new_file_write _IO_file_write
+# define _IO_new_file_xsputn _IO_file_xsputn
+#endif
+
+
+/* Convert TO_DO wide character from DATA to FP.
+ Then mark FP as having empty buffers. */
+int
+_IO_wdo_write (_IO_FILE *fp, const wchar_t *data, _IO_size_t to_do)
+{
+ struct _IO_codecvt *cc = fp->_codecvt;
+
+ if (to_do > 0)
+ {
+ if (fp->_IO_write_end == fp->_IO_write_ptr
+ && fp->_IO_write_end != fp->_IO_write_base)
+ {
+ if (_IO_new_do_write (fp, fp->_IO_write_base,
+ fp->_IO_write_ptr - fp->_IO_write_base) == EOF)
+ return WEOF;
+ }
+
+ do
+ {
+ enum __codecvt_result result;
+ const wchar_t *new_data;
+ char mb_buf[MB_LEN_MAX];
+ char *write_base, *write_ptr, *buf_end;
+
+ if (fp->_IO_write_ptr - fp->_IO_write_base < sizeof (mb_buf))
+ {
+ /* Make sure we have room for at least one multibyte
+ character. */
+ write_ptr = write_base = mb_buf;
+ buf_end = mb_buf + sizeof (mb_buf);
+ }
+ else
+ {
+ write_ptr = fp->_IO_write_ptr;
+ write_base = fp->_IO_write_base;
+ buf_end = fp->_IO_buf_end;
+ }
+
+ /* Now convert from the internal format into the external buffer. */
+ result = (*cc->__codecvt_do_out) (cc, &fp->_wide_data->_IO_state,
+ data, data + to_do, &new_data,
+ write_ptr,
+ buf_end,
+ &write_ptr);
+
+ /* Write out what we produced so far. */
+ if (_IO_new_do_write (fp, write_base, write_ptr - write_base) == EOF)
+ /* Something went wrong. */
+ return WEOF;
+
+ to_do -= new_data - data;
+
+ /* Next see whether we had problems during the conversion. If yes,
+ we cannot go on. */
+ if (result != __codecvt_ok
+ && (result != __codecvt_partial || new_data - data == 0))
+ break;
+
+ data = new_data;
+ }
+ while (to_do > 0);
+ }
+
+ _IO_wsetg (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base);
+ fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr
+ = fp->_wide_data->_IO_buf_base;
+ fp->_wide_data->_IO_write_end = ((fp->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED))
+ ? fp->_wide_data->_IO_buf_base
+ : fp->_wide_data->_IO_buf_end);
+
+ return to_do == 0 ? 0 : WEOF;
+}
+libc_hidden_def (_IO_wdo_write)
+
+
+wint_t
+_IO_wfile_underflow (_IO_FILE *fp)
+{
+ struct _IO_codecvt *cd;
+ enum __codecvt_result status;
+ _IO_ssize_t count;
+
+ if (__glibc_unlikely (fp->_flags & _IO_NO_READS))
+ {
+ fp->_flags |= _IO_ERR_SEEN;
+ __set_errno (EBADF);
+ return WEOF;
+ }
+ if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+ return *fp->_wide_data->_IO_read_ptr;
+
+ cd = fp->_codecvt;
+
+ /* Maybe there is something left in the external buffer. */
+ if (fp->_IO_read_ptr < fp->_IO_read_end)
+ {
+ /* There is more in the external. Convert it. */
+ const char *read_stop = (const char *) fp->_IO_read_ptr;
+
+ fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state;
+ fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr =
+ fp->_wide_data->_IO_buf_base;
+ status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state,
+ fp->_IO_read_ptr, fp->_IO_read_end,
+ &read_stop,
+ fp->_wide_data->_IO_read_ptr,
+ fp->_wide_data->_IO_buf_end,
+ &fp->_wide_data->_IO_read_end);
+
+ fp->_IO_read_base = fp->_IO_read_ptr;
+ fp->_IO_read_ptr = (char *) read_stop;
+
+ /* If we managed to generate some text return the next character. */
+ if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+ return *fp->_wide_data->_IO_read_ptr;
+
+ if (status == __codecvt_error)
+ {
+ __set_errno (EILSEQ);
+ fp->_flags |= _IO_ERR_SEEN;
+ return WEOF;
+ }
+
+ /* Move the remaining content of the read buffer to the beginning. */
+ memmove (fp->_IO_buf_base, fp->_IO_read_ptr,
+ fp->_IO_read_end - fp->_IO_read_ptr);
+ fp->_IO_read_end = (fp->_IO_buf_base
+ + (fp->_IO_read_end - fp->_IO_read_ptr));
+ fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_buf_base;
+ }
+ else
+ fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end =
+ fp->_IO_buf_base;
+
+ if (fp->_IO_buf_base == NULL)
+ {
+ /* Maybe we already have a push back pointer. */
+ if (fp->_IO_save_base != NULL)
+ {
+ free (fp->_IO_save_base);
+ fp->_flags &= ~_IO_IN_BACKUP;
+ }
+ _IO_doallocbuf (fp);
+
+ fp->_IO_read_base = fp->_IO_read_ptr = fp->_IO_read_end =
+ fp->_IO_buf_base;
+ }
+
+ fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_write_end =
+ fp->_IO_buf_base;
+
+ if (fp->_wide_data->_IO_buf_base == NULL)
+ {
+ /* Maybe we already have a push back pointer. */
+ if (fp->_wide_data->_IO_save_base != NULL)
+ {
+ free (fp->_wide_data->_IO_save_base);
+ fp->_flags &= ~_IO_IN_BACKUP;
+ }
+ _IO_wdoallocbuf (fp);
+ }
+
+ /* Flush all line buffered files before reading. */
+ /* FIXME This can/should be moved to genops ?? */
+ if (fp->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED))
+ {
+#if 0
+ _IO_flush_all_linebuffered ();
+#else
+ /* We used to flush all line-buffered stream. This really isn't
+ required by any standard. My recollection is that
+ traditional Unix systems did this for stdout. stderr better
+ not be line buffered. So we do just that here
+ explicitly. --drepper */
+ _IO_acquire_lock (_IO_stdout);
+
+ if ((_IO_stdout->_flags & (_IO_LINKED | _IO_NO_WRITES | _IO_LINE_BUF))
+ == (_IO_LINKED | _IO_LINE_BUF))
+ _IO_OVERFLOW (_IO_stdout, EOF);
+
+ _IO_release_lock (_IO_stdout);
+#endif
+ }
+
+ _IO_switch_to_get_mode (fp);
+
+ fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr =
+ fp->_wide_data->_IO_buf_base;
+ fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_buf_base;
+ fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_write_ptr =
+ fp->_wide_data->_IO_write_end = fp->_wide_data->_IO_buf_base;
+
+ const char *read_ptr_copy;
+ char accbuf[MB_LEN_MAX];
+ size_t naccbuf = 0;
+ again:
+ count = _IO_SYSREAD (fp, fp->_IO_read_end,
+ fp->_IO_buf_end - fp->_IO_read_end);
+ if (count <= 0)
+ {
+ if (count == 0 && naccbuf == 0)
+ {
+ fp->_flags |= _IO_EOF_SEEN;
+ fp->_offset = _IO_pos_BAD;
+ }
+ else
+ fp->_flags |= _IO_ERR_SEEN, count = 0;
+ }
+ fp->_IO_read_end += count;
+ if (count == 0)
+ {
+ if (naccbuf != 0)
+ /* There are some bytes in the external buffer but they don't
+ convert to anything. */
+ __set_errno (EILSEQ);
+ return WEOF;
+ }
+ if (fp->_offset != _IO_pos_BAD)
+ _IO_pos_adjust (fp->_offset, count);
+
+ /* Now convert the read input. */
+ fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state;
+ fp->_IO_read_base = fp->_IO_read_ptr;
+ const char *from = fp->_IO_read_ptr;
+ const char *to = fp->_IO_read_end;
+ size_t to_copy = count;
+ if (__glibc_unlikely (naccbuf != 0))
+ {
+ to_copy = MIN (sizeof (accbuf) - naccbuf, count);
+ to = __mempcpy (&accbuf[naccbuf], from, to_copy);
+ naccbuf += to_copy;
+ from = accbuf;
+ }
+ status = (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state,
+ from, to, &read_ptr_copy,
+ fp->_wide_data->_IO_read_end,
+ fp->_wide_data->_IO_buf_end,
+ &fp->_wide_data->_IO_read_end);
+
+ if (__glibc_unlikely (naccbuf != 0))
+ fp->_IO_read_ptr += MAX (0, read_ptr_copy - &accbuf[naccbuf - to_copy]);
+ else
+ fp->_IO_read_ptr = (char *) read_ptr_copy;
+ if (fp->_wide_data->_IO_read_end == fp->_wide_data->_IO_buf_base)
+ {
+ if (status == __codecvt_error)
+ {
+ out_eilseq:
+ __set_errno (EILSEQ);
+ fp->_flags |= _IO_ERR_SEEN;
+ return WEOF;
+ }
+
+ /* The read bytes make no complete character. Try reading again. */
+ assert (status == __codecvt_partial);
+
+ if (naccbuf == 0)
+ {
+ if (fp->_IO_read_base < fp->_IO_read_ptr)
+ {
+ /* Partially used the buffer for some input data that
+ produces no output. */
+ size_t avail = fp->_IO_read_end - fp->_IO_read_ptr;
+ memmove (fp->_IO_read_base, fp->_IO_read_ptr, avail);
+ fp->_IO_read_ptr = fp->_IO_read_base;
+ fp->_IO_read_end -= avail;
+ goto again;
+ }
+ naccbuf = fp->_IO_read_end - fp->_IO_read_ptr;
+ if (naccbuf >= sizeof (accbuf))
+ goto out_eilseq;
+
+ memcpy (accbuf, fp->_IO_read_ptr, naccbuf);
+ }
+ else
+ {
+ size_t used = read_ptr_copy - accbuf;
+ if (used > 0)
+ {
+ memmove (accbuf, read_ptr_copy, naccbuf - used);
+ naccbuf -= used;
+ }
+
+ if (naccbuf == sizeof (accbuf))
+ goto out_eilseq;
+ }
+
+ fp->_IO_read_ptr = fp->_IO_read_end = fp->_IO_read_base;
+
+ goto again;
+ }
+
+ return *fp->_wide_data->_IO_read_ptr;
+}
+libc_hidden_def (_IO_wfile_underflow)
+
+
+static wint_t
+_IO_wfile_underflow_mmap (_IO_FILE *fp)
+{
+ struct _IO_codecvt *cd;
+ const char *read_stop;
+
+ if (__glibc_unlikely (fp->_flags & _IO_NO_READS))
+ {
+ fp->_flags |= _IO_ERR_SEEN;
+ __set_errno (EBADF);
+ return WEOF;
+ }
+ if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+ return *fp->_wide_data->_IO_read_ptr;
+
+ cd = fp->_codecvt;
+
+ /* Maybe there is something left in the external buffer. */
+ if (fp->_IO_read_ptr >= fp->_IO_read_end
+ /* No. But maybe the read buffer is not fully set up. */
+ && _IO_file_underflow_mmap (fp) == EOF)
+ /* Nothing available. _IO_file_underflow_mmap has set the EOF or error
+ flags as appropriate. */
+ return WEOF;
+
+ /* There is more in the external. Convert it. */
+ read_stop = (const char *) fp->_IO_read_ptr;
+
+ if (fp->_wide_data->_IO_buf_base == NULL)
+ {
+ /* Maybe we already have a push back pointer. */
+ if (fp->_wide_data->_IO_save_base != NULL)
+ {
+ free (fp->_wide_data->_IO_save_base);
+ fp->_flags &= ~_IO_IN_BACKUP;
+ }
+ _IO_wdoallocbuf (fp);
+ }
+
+ fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state;
+ fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_ptr =
+ fp->_wide_data->_IO_buf_base;
+ (*cd->__codecvt_do_in) (cd, &fp->_wide_data->_IO_state,
+ fp->_IO_read_ptr, fp->_IO_read_end,
+ &read_stop,
+ fp->_wide_data->_IO_read_ptr,
+ fp->_wide_data->_IO_buf_end,
+ &fp->_wide_data->_IO_read_end);
+
+ fp->_IO_read_ptr = (char *) read_stop;
+
+ /* If we managed to generate some text return the next character. */
+ if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+ return *fp->_wide_data->_IO_read_ptr;
+
+ /* There is some garbage at the end of the file. */
+ __set_errno (EILSEQ);
+ fp->_flags |= _IO_ERR_SEEN;
+ return WEOF;
+}
+
+static wint_t
+_IO_wfile_underflow_maybe_mmap (_IO_FILE *fp)
+{
+ /* This is the first read attempt. Doing the underflow will choose mmap
+ or vanilla operations and then punt to the chosen underflow routine.
+ Then we can punt to ours. */
+ if (_IO_file_underflow_maybe_mmap (fp) == EOF)
+ return WEOF;
+
+ return _IO_WUNDERFLOW (fp);
+}
+
+
+wint_t
+_IO_wfile_overflow (_IO_FILE *f, wint_t wch)
+{
+ if (f->_flags & _IO_NO_WRITES) /* SET ERROR */
+ {
+ f->_flags |= _IO_ERR_SEEN;
+ __set_errno (EBADF);
+ return WEOF;
+ }
+ /* If currently reading or no buffer allocated. */
+ if ((f->_flags & _IO_CURRENTLY_PUTTING) == 0)
+ {
+ /* Allocate a buffer if needed. */
+ if (f->_wide_data->_IO_write_base == 0)
+ {
+ _IO_wdoallocbuf (f);
+ _IO_wsetg (f, f->_wide_data->_IO_buf_base,
+ f->_wide_data->_IO_buf_base, f->_wide_data->_IO_buf_base);
+
+ if (f->_IO_write_base == NULL)
+ {
+ _IO_doallocbuf (f);
+ _IO_setg (f, f->_IO_buf_base, f->_IO_buf_base, f->_IO_buf_base);
+ }
+ }
+ else
+ {
+ /* Otherwise must be currently reading. If _IO_read_ptr
+ (and hence also _IO_read_end) is at the buffer end,
+ logically slide the buffer forwards one block (by setting
+ the read pointers to all point at the beginning of the
+ block). This makes room for subsequent output.
+ Otherwise, set the read pointers to _IO_read_end (leaving
+ that alone, so it can continue to correspond to the
+ external position). */
+ if (f->_wide_data->_IO_read_ptr == f->_wide_data->_IO_buf_end)
+ {
+ f->_IO_read_end = f->_IO_read_ptr = f->_IO_buf_base;
+ f->_wide_data->_IO_read_end = f->_wide_data->_IO_read_ptr =
+ f->_wide_data->_IO_buf_base;
+ }
+ }
+ f->_wide_data->_IO_write_ptr = f->_wide_data->_IO_read_ptr;
+ f->_wide_data->_IO_write_base = f->_wide_data->_IO_write_ptr;
+ f->_wide_data->_IO_write_end = f->_wide_data->_IO_buf_end;
+ f->_wide_data->_IO_read_base = f->_wide_data->_IO_read_ptr =
+ f->_wide_data->_IO_read_end;
+
+ f->_IO_write_ptr = f->_IO_read_ptr;
+ f->_IO_write_base = f->_IO_write_ptr;
+ f->_IO_write_end = f->_IO_buf_end;
+ f->_IO_read_base = f->_IO_read_ptr = f->_IO_read_end;
+
+ f->_flags |= _IO_CURRENTLY_PUTTING;
+ if (f->_flags & (_IO_LINE_BUF | _IO_UNBUFFERED))
+ f->_wide_data->_IO_write_end = f->_wide_data->_IO_write_ptr;
+ }
+ if (wch == WEOF)
+ return _IO_do_flush (f);
+ if (f->_wide_data->_IO_write_ptr == f->_wide_data->_IO_buf_end)
+ /* Buffer is really full */
+ if (_IO_do_flush (f) == EOF)
+ return WEOF;
+ *f->_wide_data->_IO_write_ptr++ = wch;
+ if ((f->_flags & _IO_UNBUFFERED)
+ || ((f->_flags & _IO_LINE_BUF) && wch == L'\n'))
+ if (_IO_do_flush (f) == EOF)
+ return WEOF;
+ return wch;
+}
+libc_hidden_def (_IO_wfile_overflow)
+
+wint_t
+_IO_wfile_sync (_IO_FILE *fp)
+{
+ _IO_ssize_t delta;
+ wint_t retval = 0;
+
+ /* char* ptr = cur_ptr(); */
+ if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_write_base)
+ if (_IO_do_flush (fp))
+ return WEOF;
+ delta = fp->_wide_data->_IO_read_ptr - fp->_wide_data->_IO_read_end;
+ if (delta != 0)
+ {
+ /* We have to find out how many bytes we have to go back in the
+ external buffer. */
+ struct _IO_codecvt *cv = fp->_codecvt;
+ _IO_off64_t new_pos;
+
+ int clen = (*cv->__codecvt_do_encoding) (cv);
+
+ if (clen > 0)
+ /* It is easy, a fixed number of input bytes are used for each
+ wide character. */
+ delta *= clen;
+ else
+ {
+ /* We have to find out the hard way how much to back off.
+ To do this we determine how much input we needed to
+ generate the wide characters up to the current reading
+ position. */
+ int nread;
+
+ fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state;
+ nread = (*cv->__codecvt_do_length) (cv, &fp->_wide_data->_IO_state,
+ fp->_IO_read_base,
+ fp->_IO_read_end, delta);
+ fp->_IO_read_ptr = fp->_IO_read_base + nread;
+ delta = -(fp->_IO_read_end - fp->_IO_read_base - nread);
+ }
+
+ new_pos = _IO_SYSSEEK (fp, delta, 1);
+ if (new_pos != (_IO_off64_t) EOF)
+ {
+ fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr;
+ fp->_IO_read_end = fp->_IO_read_ptr;
+ }
+#ifdef ESPIPE
+ else if (errno == ESPIPE)
+ ; /* Ignore error from unseekable devices. */
+#endif
+ else
+ retval = WEOF;
+ }
+ if (retval != WEOF)
+ fp->_offset = _IO_pos_BAD;
+ /* FIXME: Cleanup - can this be shared? */
+ /* setg(base(), ptr, ptr); */
+ return retval;
+}
+libc_hidden_def (_IO_wfile_sync)
+
+/* Adjust the internal buffer pointers to reflect the state in the external
+ buffer. The content between fp->_IO_read_base and fp->_IO_read_ptr is
+ assumed to be converted and available in the range
+ fp->_wide_data->_IO_read_base and fp->_wide_data->_IO_read_end.
+
+ Returns 0 on success and -1 on error with the _IO_ERR_SEEN flag set. */
+static int
+adjust_wide_data (_IO_FILE *fp, bool do_convert)
+{
+ struct _IO_codecvt *cv = fp->_codecvt;
+
+ int clen = (*cv->__codecvt_do_encoding) (cv);
+
+ /* Take the easy way out for constant length encodings if we don't need to
+ convert. */
+ if (!do_convert && clen > 0)
+ {
+ fp->_wide_data->_IO_read_end += ((fp->_IO_read_ptr - fp->_IO_read_base)
+ / clen);
+ goto done;
+ }
+
+ enum __codecvt_result status;
+ const char *read_stop = (const char *) fp->_IO_read_base;
+ do
+ {
+
+ fp->_wide_data->_IO_last_state = fp->_wide_data->_IO_state;
+ status = (*cv->__codecvt_do_in) (cv, &fp->_wide_data->_IO_state,
+ fp->_IO_read_base, fp->_IO_read_ptr,
+ &read_stop,
+ fp->_wide_data->_IO_read_base,
+ fp->_wide_data->_IO_buf_end,
+ &fp->_wide_data->_IO_read_end);
+
+ /* Should we return EILSEQ? */
+ if (__glibc_unlikely (status == __codecvt_error))
+ {
+ fp->_flags |= _IO_ERR_SEEN;
+ return -1;
+ }
+ }
+ while (__builtin_expect (status == __codecvt_partial, 0));
+
+done:
+ /* Now seek to _IO_read_end to behave as if we have read it all in. */
+ fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end;
+
+ return 0;
+}
+
+/* ftell{,o} implementation for wide mode. Don't modify any state of the file
+ pointer while we try to get the current state of the stream except in one
+ case, which is when we have unflushed writes in append mode. */
+static _IO_off64_t
+do_ftell_wide (_IO_FILE *fp)
+{
+ _IO_off64_t result, offset = 0;
+
+ /* No point looking for offsets in the buffer if it hasn't even been
+ allocated. */
+ if (fp->_wide_data->_IO_buf_base != NULL)
+ {
+ const wchar_t *wide_read_base;
+ const wchar_t *wide_read_ptr;
+ const wchar_t *wide_read_end;
+ bool unflushed_writes = (fp->_wide_data->_IO_write_ptr
+ > fp->_wide_data->_IO_write_base);
+
+ bool append_mode = (fp->_flags & _IO_IS_APPENDING) == _IO_IS_APPENDING;
+
+ /* When we have unflushed writes in append mode, seek to the end of the
+ file and record that offset. This is the only time we change the file
+ stream state and it is safe since the file handle is active. */
+ if (unflushed_writes && append_mode)
+ {
+ result = _IO_SYSSEEK (fp, 0, _IO_seek_end);
+ if (result == _IO_pos_BAD)
+ return EOF;
+ else
+ fp->_offset = result;
+ }
+
+ /* XXX For wide stream with backup store it is not very
+ reasonable to determine the offset. The pushed-back
+ character might require a state change and we need not be
+ able to compute the initial state by reverse transformation
+ since there is no guarantee of symmetry. So we don't even
+ try and return an error. */
+ if (_IO_in_backup (fp))
+ {
+ if (fp->_wide_data->_IO_read_ptr < fp->_wide_data->_IO_read_end)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ /* Nothing in the backup store, so note the backed up pointers
+ without changing the state. */
+ wide_read_base = fp->_wide_data->_IO_save_base;
+ wide_read_ptr = wide_read_base;
+ wide_read_end = fp->_wide_data->_IO_save_end;
+ }
+ else
+ {
+ wide_read_base = fp->_wide_data->_IO_read_base;
+ wide_read_ptr = fp->_wide_data->_IO_read_ptr;
+ wide_read_end = fp->_wide_data->_IO_read_end;
+ }
+
+ struct _IO_codecvt *cv = fp->_codecvt;
+ int clen = (*cv->__codecvt_do_encoding) (cv);
+
+ if (!unflushed_writes)
+ {
+ if (clen > 0)
+ {
+ offset -= (wide_read_end - wide_read_ptr) * clen;
+ offset -= fp->_IO_read_end - fp->_IO_read_ptr;
+ }
+ else
+ {
+ int nread;
+
+ size_t delta = wide_read_ptr - wide_read_base;
+ __mbstate_t state = fp->_wide_data->_IO_last_state;
+ nread = (*cv->__codecvt_do_length) (cv, &state,
+ fp->_IO_read_base,
+ fp->_IO_read_end, delta);
+ offset -= fp->_IO_read_end - fp->_IO_read_base - nread;
+ }
+ }
+ else
+ {
+ if (clen > 0)
+ offset += (fp->_wide_data->_IO_write_ptr
+ - fp->_wide_data->_IO_write_base) * clen;
+ else
+ {
+ size_t delta = (fp->_wide_data->_IO_write_ptr
+ - fp->_wide_data->_IO_write_base);
+
+ /* Allocate enough space for the conversion. */
+ size_t outsize = delta * sizeof (wchar_t);
+ char *out = malloc (outsize);
+ char *outstop = out;
+ const wchar_t *in = fp->_wide_data->_IO_write_base;
+
+ enum __codecvt_result status;
+
+ __mbstate_t state = fp->_wide_data->_IO_last_state;
+ status = (*cv->__codecvt_do_out) (cv, &state,
+ in, in + delta, &in,
+ out, out + outsize, &outstop);
+
+ /* We don't check for __codecvt_partial because it can be
+ returned on one of two conditions: either the output
+ buffer is full or the input sequence is incomplete. We
+ take care to allocate enough buffer and our input
+ sequences must be complete since they are accepted as
+ wchar_t; if not, then that is an error. */
+ if (__glibc_unlikely (status != __codecvt_ok))
+ {
+ free (out);
+ return WEOF;
+ }
+
+ offset += outstop - out;
+ free (out);
+ }
+
+ /* We don't trust _IO_read_end to represent the current file offset
+ when writing in append mode because the value would have to be
+ shifted to the end of the file during a flush. Use the write base
+ instead, along with the new offset we got above when we did a seek
+ to the end of the file. */
+ if (append_mode)
+ offset += fp->_IO_write_ptr - fp->_IO_write_base;
+ /* For all other modes, _IO_read_end represents the file offset. */
+ else
+ offset += fp->_IO_write_ptr - fp->_IO_read_end;
+ }
+ }
+
+ if (fp->_offset != _IO_pos_BAD)
+ result = fp->_offset;
+ else
+ result = _IO_SYSSEEK (fp, 0, _IO_seek_cur);
+
+ if (result == EOF)
+ return result;
+
+ result += offset;
+
+ if (result < 0)
+ {
+ __set_errno (EINVAL);
+ return EOF;
+ }
+
+ return result;
+}
+
+_IO_off64_t
+_IO_wfile_seekoff (_IO_FILE *fp, _IO_off64_t offset, int dir, int mode)
+{
+ _IO_off64_t result;
+ _IO_off64_t delta, new_offset;
+ long int count;
+
+ /* Short-circuit into a separate function. We don't want to mix any
+ functionality and we don't want to touch anything inside the FILE
+ object. */
+ if (mode == 0)
+ return do_ftell_wide (fp);
+
+ /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
+ offset of the underlying file must be exact. */
+ int must_be_exact = ((fp->_wide_data->_IO_read_base
+ == fp->_wide_data->_IO_read_end)
+ && (fp->_wide_data->_IO_write_base
+ == fp->_wide_data->_IO_write_ptr));
+
+ bool was_writing = ((fp->_wide_data->_IO_write_ptr
+ > fp->_wide_data->_IO_write_base)
+ || _IO_in_put_mode (fp));
+
+ /* Flush unwritten characters.
+ (This may do an unneeded write if we seek within the buffer.
+ But to be able to switch to reading, we would need to set
+ egptr to pptr. That can't be done in the current design,
+ which assumes file_ptr() is eGptr. Anyway, since we probably
+ end up flushing when we close(), it doesn't make much difference.)
+ FIXME: simulate mem-mapped files. */
+ if (was_writing && _IO_switch_to_wget_mode (fp))
+ return WEOF;
+
+ if (fp->_wide_data->_IO_buf_base == NULL)
+ {
+ /* It could be that we already have a pushback buffer. */
+ if (fp->_wide_data->_IO_read_base != NULL)
+ {
+ free (fp->_wide_data->_IO_read_base);
+ fp->_flags &= ~_IO_IN_BACKUP;
+ }
+ _IO_doallocbuf (fp);
+ _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_wsetp (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base);
+ _IO_wsetg (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base);
+ }
+
+ switch (dir)
+ {
+ struct _IO_codecvt *cv;
+ int clen;
+
+ case _IO_seek_cur:
+ /* Adjust for read-ahead (bytes is buffer). To do this we must
+ find out which position in the external buffer corresponds to
+ the current position in the internal buffer. */
+ cv = fp->_codecvt;
+ clen = (*cv->__codecvt_do_encoding) (cv);
+
+ if (mode != 0 || !was_writing)
+ {
+ if (clen > 0)
+ {
+ offset -= (fp->_wide_data->_IO_read_end
+ - fp->_wide_data->_IO_read_ptr) * clen;
+ /* Adjust by readahead in external buffer. */
+ offset -= fp->_IO_read_end - fp->_IO_read_ptr;
+ }
+ else
+ {
+ int nread;
+
+ delta = (fp->_wide_data->_IO_read_ptr
+ - fp->_wide_data->_IO_read_base);
+ fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state;
+ nread = (*cv->__codecvt_do_length) (cv,
+ &fp->_wide_data->_IO_state,
+ fp->_IO_read_base,
+ fp->_IO_read_end, delta);
+ fp->_IO_read_ptr = fp->_IO_read_base + nread;
+ fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr;
+ offset -= fp->_IO_read_end - fp->_IO_read_base - nread;
+ }
+ }
+
+ if (fp->_offset == _IO_pos_BAD)
+ goto dumb;
+
+ /* Make offset absolute, assuming current pointer is file_ptr(). */
+ offset += fp->_offset;
+
+ dir = _IO_seek_set;
+ break;
+ case _IO_seek_set:
+ break;
+ case _IO_seek_end:
+ {
+ struct stat64 st;
+ if (_IO_SYSSTAT (fp, &st) == 0 && S_ISREG (st.st_mode))
+ {
+ offset += st.st_size;
+ dir = _IO_seek_set;
+ }
+ else
+ goto dumb;
+ }
+ }
+ /* At this point, dir==_IO_seek_set. */
+
+ /* If destination is within current buffer, optimize: */
+ if (fp->_offset != _IO_pos_BAD && fp->_IO_read_base != NULL
+ && !_IO_in_backup (fp))
+ {
+ _IO_off64_t start_offset = (fp->_offset
+ - (fp->_IO_read_end - fp->_IO_buf_base));
+ if (offset >= start_offset && offset < fp->_offset)
+ {
+ _IO_setg (fp, fp->_IO_buf_base,
+ fp->_IO_buf_base + (offset - start_offset),
+ fp->_IO_read_end);
+ _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_wsetg (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base);
+ _IO_wsetp (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base);
+
+ if (adjust_wide_data (fp, false))
+ goto dumb;
+
+ _IO_mask_flags (fp, 0, _IO_EOF_SEEN);
+ goto resync;
+ }
+ }
+
+ if (fp->_flags & _IO_NO_READS)
+ goto dumb;
+
+ /* Try to seek to a block boundary, to improve kernel page management. */
+ new_offset = offset & ~(fp->_IO_buf_end - fp->_IO_buf_base - 1);
+ delta = offset - new_offset;
+ if (delta > fp->_IO_buf_end - fp->_IO_buf_base)
+ {
+ new_offset = offset;
+ delta = 0;
+ }
+ result = _IO_SYSSEEK (fp, new_offset, 0);
+ if (result < 0)
+ return EOF;
+ if (delta == 0)
+ count = 0;
+ else
+ {
+ count = _IO_SYSREAD (fp, fp->_IO_buf_base,
+ (must_be_exact
+ ? delta : fp->_IO_buf_end - fp->_IO_buf_base));
+ if (count < delta)
+ {
+ /* We weren't allowed to read, but try to seek the remainder. */
+ offset = count == EOF ? delta : delta-count;
+ dir = _IO_seek_cur;
+ goto dumb;
+ }
+ }
+ _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base + delta,
+ fp->_IO_buf_base + count);
+ _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_wsetg (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base);
+ _IO_wsetp (fp, fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base);
+
+ if (adjust_wide_data (fp, true))
+ goto dumb;
+
+ fp->_offset = result + count;
+ _IO_mask_flags (fp, 0, _IO_EOF_SEEN);
+ return offset;
+ dumb:
+
+ _IO_unsave_markers (fp);
+ result = _IO_SYSSEEK (fp, offset, dir);
+ if (result != EOF)
+ {
+ _IO_mask_flags (fp, 0, _IO_EOF_SEEN);
+ fp->_offset = result;
+ _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
+ _IO_wsetg (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base, fp->_wide_data->_IO_buf_base);
+ _IO_wsetp (fp, fp->_wide_data->_IO_buf_base,
+ fp->_wide_data->_IO_buf_base);
+ }
+ return result;
+
+resync:
+ /* We need to do it since it is possible that the file offset in
+ the kernel may be changed behind our back. It may happen when
+ we fopen a file and then do a fork. One process may access the
+ file and the kernel file offset will be changed. */
+ if (fp->_offset >= 0)
+ _IO_SYSSEEK (fp, fp->_offset, 0);
+
+ return offset;
+}
+libc_hidden_def (_IO_wfile_seekoff)
+
+
+_IO_size_t
+_IO_wfile_xsputn (_IO_FILE *f, const void *data, _IO_size_t n)
+{
+ const wchar_t *s = (const wchar_t *) data;
+ _IO_size_t to_do = n;
+ int must_flush = 0;
+ _IO_size_t count;
+
+ if (n <= 0)
+ return 0;
+ /* This is an optimized implementation.
+ If the amount to be written straddles a block boundary
+ (or the filebuf is unbuffered), use sys_write directly. */
+
+ /* First figure out how much space is available in the buffer. */
+ count = f->_wide_data->_IO_write_end - f->_wide_data->_IO_write_ptr;
+ if ((f->_flags & _IO_LINE_BUF) && (f->_flags & _IO_CURRENTLY_PUTTING))
+ {
+ count = f->_wide_data->_IO_buf_end - f->_wide_data->_IO_write_ptr;
+ if (count >= n)
+ {
+ const wchar_t *p;
+ for (p = s + n; p > s; )
+ {
+ if (*--p == L'\n')
+ {
+ count = p - s + 1;
+ must_flush = 1;
+ break;
+ }
+ }
+ }
+ }
+ /* Then fill the buffer. */
+ if (count > 0)
+ {
+ if (count > to_do)
+ count = to_do;
+ if (count > 20)
+ {
+#ifdef _LIBC
+ f->_wide_data->_IO_write_ptr =
+ __wmempcpy (f->_wide_data->_IO_write_ptr, s, count);
+#else
+ wmemcpy (f->_wide_data->_IO_write_ptr, s, count);
+ f->_wide_data->_IO_write_ptr += count;
+#endif
+ s += count;
+ }
+ else
+ {
+ wchar_t *p = f->_wide_data->_IO_write_ptr;
+ int i = (int) count;
+ while (--i >= 0)
+ *p++ = *s++;
+ f->_wide_data->_IO_write_ptr = p;
+ }
+ to_do -= count;
+ }
+ if (to_do > 0)
+ to_do -= _IO_wdefault_xsputn (f, s, to_do);
+ if (must_flush
+ && f->_wide_data->_IO_write_ptr != f->_wide_data->_IO_write_base)
+ _IO_wdo_write (f, f->_wide_data->_IO_write_base,
+ f->_wide_data->_IO_write_ptr
+ - f->_wide_data->_IO_write_base);
+
+ return n - to_do;
+}
+libc_hidden_def (_IO_wfile_xsputn)
+
+
+const struct _IO_jump_t _IO_wfile_jumps =
+{
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_new_file_finish),
+ JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow),
+ JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow),
+ JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow),
+ JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
+ JUMP_INIT(xsputn, _IO_wfile_xsputn),
+ JUMP_INIT(xsgetn, _IO_file_xsgetn),
+ JUMP_INIT(seekoff, _IO_wfile_seekoff),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_new_file_setbuf),
+ JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync),
+ JUMP_INIT(doallocate, _IO_wfile_doallocate),
+ JUMP_INIT(read, _IO_file_read),
+ JUMP_INIT(write, _IO_new_file_write),
+ JUMP_INIT(seek, _IO_file_seek),
+ JUMP_INIT(close, _IO_file_close),
+ JUMP_INIT(stat, _IO_file_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue)
+};
+libc_hidden_data_def (_IO_wfile_jumps)
+
+
+const struct _IO_jump_t _IO_wfile_jumps_mmap =
+{
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_new_file_finish),
+ JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow),
+ JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_mmap),
+ JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow),
+ JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
+ JUMP_INIT(xsputn, _IO_wfile_xsputn),
+ JUMP_INIT(xsgetn, _IO_file_xsgetn),
+ JUMP_INIT(seekoff, _IO_wfile_seekoff),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_file_setbuf_mmap),
+ JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync),
+ JUMP_INIT(doallocate, _IO_wfile_doallocate),
+ JUMP_INIT(read, _IO_file_read),
+ JUMP_INIT(write, _IO_new_file_write),
+ JUMP_INIT(seek, _IO_file_seek),
+ JUMP_INIT(close, _IO_file_close_mmap),
+ JUMP_INIT(stat, _IO_file_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue)
+};
+
+const struct _IO_jump_t _IO_wfile_jumps_maybe_mmap =
+{
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_new_file_finish),
+ JUMP_INIT(overflow, (_IO_overflow_t) _IO_wfile_overflow),
+ JUMP_INIT(underflow, (_IO_underflow_t) _IO_wfile_underflow_maybe_mmap),
+ JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow),
+ JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wdefault_pbackfail),
+ JUMP_INIT(xsputn, _IO_wfile_xsputn),
+ JUMP_INIT(xsgetn, _IO_file_xsgetn),
+ JUMP_INIT(seekoff, _IO_wfile_seekoff),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_file_setbuf_mmap),
+ JUMP_INIT(sync, (_IO_sync_t) _IO_wfile_sync),
+ JUMP_INIT(doallocate, _IO_wfile_doallocate),
+ JUMP_INIT(read, _IO_file_read),
+ JUMP_INIT(write, _IO_new_file_write),
+ JUMP_INIT(seek, _IO_file_seek),
+ JUMP_INIT(close, _IO_file_close),
+ JUMP_INIT(stat, _IO_file_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue)
+};