diff options
Diffstat (limited to 'libio/iofopncook.c')
| -rw-r--r-- | libio/iofopncook.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/libio/iofopncook.c b/libio/iofopncook.c index 321eb67b8d..976ff5093a 100644 --- a/libio/iofopncook.c +++ b/libio/iofopncook.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1993,95,97,99,2000,2002,2004 Free Software Foundation, Inc. +/* Copyright (C) 1993,95,97,99,2000,2002,2004, 2005 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -36,6 +37,8 @@ static _IO_ssize_t _IO_cookie_read (register _IO_FILE* fp, void* buf, static _IO_ssize_t _IO_cookie_write (register _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 @@ -61,9 +64,16 @@ _IO_cookie_write (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_off64_t @@ -94,6 +104,20 @@ _IO_cookie_close (fp) } +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 INTUSE(_IO_file_seekoff) (fp, offset, dir, mode); +} + + static const struct _IO_jump_t _IO_cookie_jumps = { JUMP_INIT_DUMMY, JUMP_INIT(finish, INTUSE(_IO_file_finish)), @@ -103,7 +127,7 @@ static const struct _IO_jump_t _IO_cookie_jumps = { JUMP_INIT(pbackfail, INTUSE(_IO_default_pbackfail)), JUMP_INIT(xsputn, INTUSE(_IO_file_xsputn)), JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)), - JUMP_INIT(seekoff, INTUSE(_IO_file_seekoff)), + JUMP_INIT(seekoff, _IO_cookie_seekoff), JUMP_INIT(seekpos, _IO_default_seekpos), JUMP_INIT(setbuf, INTUSE(_IO_file_setbuf)), JUMP_INIT(sync, INTUSE(_IO_file_sync)), @@ -223,7 +247,7 @@ static const struct _IO_jump_t _IO_old_cookie_jumps = { JUMP_INIT(pbackfail, INTUSE(_IO_default_pbackfail)), JUMP_INIT(xsputn, INTUSE(_IO_file_xsputn)), JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)), - JUMP_INIT(seekoff, INTUSE(_IO_file_seekoff)), + JUMP_INIT(seekoff, _IO_cookie_seekoff), JUMP_INIT(seekpos, _IO_default_seekpos), JUMP_INIT(setbuf, INTUSE(_IO_file_setbuf)), JUMP_INIT(sync, INTUSE(_IO_file_sync)), |