-/* Copyright (C) 1993, 1995, 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU IO Library.
+/* Copyright (C) 1993-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2, or (at
- your option) any later version.
+ 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.
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this library; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ 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 this library with files
- compiled with a GNU compiler to produce an executable, this does
- not cause the resulting executable to be covered by the GNU General
- Public License. This exception does not however invalidate any
- other reasons why the executable file might be covered by the GNU
- General Public License. */
+ 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 <libioP.h>
#include <stdio.h>
#include <stdlib.h>
-
+#include <shlib-compat.h>
/* Prototyped for local functions. */
-static _IO_ssize_t _IO_cookie_read __P ((register _IO_FILE* fp, void* buf,
- _IO_ssize_t size));
-static _IO_ssize_t _IO_cookie_write __P ((register _IO_FILE* fp,
- const void* buf, _IO_ssize_t size));
-static _IO_fpos64_t _IO_cookie_seek __P ((_IO_FILE *fp, _IO_off64_t offset,
- int dir));
-static int _IO_cookie_close __P ((_IO_FILE* fp));
-
+static _IO_ssize_t _IO_cookie_read (_IO_FILE* fp, void* buf,
+ _IO_ssize_t size);
+static _IO_ssize_t _IO_cookie_write (_IO_FILE* fp,
+ const void* buf, _IO_ssize_t size);
+static _IO_off64_t _IO_cookie_seek (_IO_FILE *fp, _IO_off64_t offset, int dir);
+static _IO_off64_t _IO_cookie_seekoff (_IO_FILE *fp, _IO_off64_t offset,
+ int dir, int mode);
+static int _IO_cookie_close (_IO_FILE* fp);
static _IO_ssize_t
_IO_cookie_read (fp, buf, size)
struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp;
if (cfile->__io_functions.write == NULL)
- return -1;
+ {
+ fp->_flags |= _IO_ERR_SEEN;
+ return 0;
+ }
+
+ _IO_ssize_t n = cfile->__io_functions.write (cfile->__cookie, buf, size);
+ if (n < size)
+ fp->_flags |= _IO_ERR_SEEN;
- return cfile->__io_functions.write (cfile->__cookie, buf, size);
+ return n;
}
-static _IO_fpos64_t
+static _IO_off64_t
_IO_cookie_seek (fp, offset, dir)
_IO_FILE *fp;
_IO_off64_t offset;
{
struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp;
- if (cfile->__io_functions.seek == NULL)
- return _IO_pos_BAD;
-
- return cfile->__io_functions.seek (cfile->__cookie, offset, dir);
+ return ((cfile->__io_functions.seek == NULL
+ || (cfile->__io_functions.seek (cfile->__cookie, &offset, dir)
+ == -1)
+ || offset == (_IO_off64_t) -1)
+ ? _IO_pos_BAD : offset);
}
static int
}
-static struct _IO_jump_t _IO_cookie_jumps = {
+static _IO_off64_t
+_IO_cookie_seekoff (fp, offset, dir, mode)
+ _IO_FILE *fp;
+ _IO_off64_t offset;
+ int dir;
+ int mode;
+{
+ /* We must force the fileops code to always use seek to determine
+ the position. */
+ fp->_offset = _IO_pos_BAD;
+ return _IO_file_seekoff (fp, offset, dir, mode);
+}
+
+
+static const struct _IO_jump_t _IO_cookie_jumps = {
JUMP_INIT_DUMMY,
JUMP_INIT(finish, _IO_file_finish),
JUMP_INIT(overflow, _IO_file_overflow),
JUMP_INIT(pbackfail, _IO_default_pbackfail),
JUMP_INIT(xsputn, _IO_file_xsputn),
JUMP_INIT(xsgetn, _IO_default_xsgetn),
- JUMP_INIT(seekoff, _IO_file_seekoff),
+ JUMP_INIT(seekoff, _IO_cookie_seekoff),
JUMP_INIT(seekpos, _IO_default_seekpos),
JUMP_INIT(setbuf, _IO_file_setbuf),
JUMP_INIT(sync, _IO_file_sync),
};
+void
+_IO_cookie_init (struct _IO_cookie_file *cfile, int read_write,
+ void *cookie, _IO_cookie_io_functions_t io_functions)
+{
+ _IO_init (&cfile->__fp.file, 0);
+ _IO_JUMPS (&cfile->__fp) = &_IO_cookie_jumps;
+
+ cfile->__cookie = cookie;
+ cfile->__io_functions = io_functions;
+
+ _IO_file_init (&cfile->__fp);
+
+ _IO_mask_flags (&cfile->__fp.file, read_write,
+ _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
+
+ /* We use a negative number different from -1 for _fileno to mark that
+ this special stream is not associated with a real file, but still has
+ to be treated as such. */
+ cfile->__fp.file._fileno = -2;
+}
+
+
_IO_FILE *
-fopencookie (cookie, mode, io_functions)
+_IO_fopencookie (cookie, mode, io_functions)
void *cookie;
const char *mode;
_IO_cookie_io_functions_t io_functions;
if (new_f == NULL)
return NULL;
#ifdef _IO_MTSAFE_IO
- new_f->cfile.__file._lock = &new_f->lock;
+ new_f->cfile.__fp.file._lock = &new_f->lock;
#endif
- _IO_init (&new_f->cfile.__file, 0);
- _IO_JUMPS (&new_f->cfile.__file) = &_IO_cookie_jumps;
- new_f->cfile.__cookie = cookie;
- new_f->cfile.__io_functions = io_functions;
+ _IO_cookie_init (&new_f->cfile, read_write, cookie, io_functions);
+
+ return (_IO_FILE *) &new_f->cfile.__fp;
+}
+
+versioned_symbol (libc, _IO_fopencookie, fopencookie, GLIBC_2_2);
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
+
+static _IO_off64_t _IO_old_cookie_seek (_IO_FILE *fp, _IO_off64_t offset,
+ int dir);
+_IO_FILE * _IO_old_fopencookie (void *cookie, const char *mode,
+ _IO_cookie_io_functions_t io_functions);
+
+static _IO_off64_t
+attribute_compat_text_section
+_IO_old_cookie_seek (fp, offset, dir)
+ _IO_FILE *fp;
+ _IO_off64_t offset;
+ int dir;
+{
+ struct _IO_cookie_file *cfile = (struct _IO_cookie_file *) fp;
+ int (*seek) (_IO_FILE *, _IO_off_t, int);
+ int ret;
+
+ seek = (int (*)(_IO_FILE *, _IO_off_t, int)) cfile->__io_functions.seek;
+ if (seek == NULL)
+ return _IO_pos_BAD;
- _IO_file_init(&new_f->cfile.__file);
+ ret = seek (cfile->__cookie, offset, dir);
- new_f->cfile.__file._IO_file_flags =
- _IO_mask_flags (&new_f->cfile.__file, read_write,
- _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
+ return (ret == -1) ? _IO_pos_BAD : ret;
+}
- return &new_f->cfile.__file;
+static const struct _IO_jump_t _IO_old_cookie_jumps = {
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_file_finish),
+ JUMP_INIT(overflow, _IO_file_overflow),
+ JUMP_INIT(underflow, _IO_file_underflow),
+ JUMP_INIT(uflow, _IO_default_uflow),
+ JUMP_INIT(pbackfail, _IO_default_pbackfail),
+ JUMP_INIT(xsputn, _IO_file_xsputn),
+ JUMP_INIT(xsgetn, _IO_default_xsgetn),
+ JUMP_INIT(seekoff, _IO_cookie_seekoff),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_file_setbuf),
+ JUMP_INIT(sync, _IO_file_sync),
+ JUMP_INIT(doallocate, _IO_file_doallocate),
+ JUMP_INIT(read, _IO_cookie_read),
+ JUMP_INIT(write, _IO_cookie_write),
+ JUMP_INIT(seek, _IO_old_cookie_seek),
+ JUMP_INIT(close, _IO_cookie_close),
+ JUMP_INIT(stat, _IO_default_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue),
+};
+
+_IO_FILE *
+attribute_compat_text_section
+_IO_old_fopencookie (cookie, mode, io_functions)
+ void *cookie;
+ const char *mode;
+ _IO_cookie_io_functions_t io_functions;
+{
+ _IO_FILE *ret;
+
+ ret = _IO_fopencookie (cookie, mode, io_functions);
+ if (ret != NULL)
+ _IO_JUMPS ((struct _IO_FILE_plus *) ret) = &_IO_old_cookie_jumps;
+
+ return ret;
}
+
+compat_symbol (libc, _IO_old_fopencookie, fopencookie, GLIBC_2_0);
+
+#endif
projects / thirdparty / glibc.git / blobdiff