diff options
Diffstat (limited to 'libio/fileops.c')
| -rw-r--r-- | libio/fileops.c | 60 |
1 files changed, 36 insertions, 24 deletions
diff --git a/libio/fileops.c b/libio/fileops.c index f5ec0e2b9e..8d480ad08b 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 1995, 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1995, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU IO Library. Written by Per Bothner <bothner@cygnus.com>. @@ -136,9 +136,18 @@ _IO_new_file_close_it (fp) close_status = _IO_SYSCLOSE (fp); /* Free buffer. */ - _IO_setb (fp, NULL, NULL, 0); - _IO_setg (fp, NULL, NULL, NULL); - _IO_setp (fp, NULL, NULL); + if (fp->_mode <= 0) + { + _IO_setb (fp, NULL, NULL, 0); + _IO_setg (fp, NULL, NULL, NULL); + _IO_setp (fp, NULL, NULL); + } + else + { + _IO_wsetb (fp, NULL, NULL, 0); + _IO_wsetg (fp, NULL, NULL, NULL); + _IO_wsetp (fp, NULL, NULL); + } _IO_un_link (fp); fp->_flags = _IO_MAGIC|CLOSED_FILEBUF_FLAGS; @@ -277,14 +286,14 @@ _IO_new_file_setbuf (fp, p, len) char *p; _IO_ssize_t len; { - if (_IO_default_setbuf (fp, p, len) == NULL) - return NULL; + if (_IO_default_setbuf (fp, p, len) == NULL) + return NULL; - fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_write_end - = fp->_IO_buf_base; - _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); + fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_write_end + = fp->_IO_buf_base; + _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); - return fp; + return fp; } static int new_do_write __P ((_IO_FILE *, const char *, _IO_size_t)); @@ -319,7 +328,7 @@ new_do_write (fp, data, to_do) fp->_offset = _IO_pos_BAD; else if (fp->_IO_read_end != fp->_IO_write_base) { - _IO_fpos64_t new_pos + _IO_off64_t new_pos = _IO_SYSSEEK (fp, fp->_IO_write_base - fp->_IO_read_end, 1); if (new_pos == _IO_pos_BAD) return 0; @@ -330,7 +339,8 @@ new_do_write (fp, data, to_do) fp->_cur_column = _IO_adjust_column (fp->_cur_column - 1, data, count) + 1; _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base, fp->_IO_buf_base); fp->_IO_write_base = fp->_IO_write_ptr = fp->_IO_buf_base; - fp->_IO_write_end = ((fp->_flags & (_IO_LINE_BUF+_IO_UNBUFFERED)) + fp->_IO_write_end = (fp->_mode < 0 + && (fp->_flags & (_IO_LINE_BUF+_IO_UNBUFFERED)) ? fp->_IO_buf_base : fp->_IO_buf_end); return count; } @@ -410,7 +420,7 @@ _IO_new_file_overflow (f, ch) return EOF; } /* If currently reading or no buffer allocated. */ - if ((f->_flags & _IO_CURRENTLY_PUTTING) == 0) + if ((f->_flags & _IO_CURRENTLY_PUTTING) == 0 || f->_IO_write_base == 0) { /* Allocate a buffer if needed. */ if (f->_IO_write_base == 0) @@ -433,18 +443,20 @@ _IO_new_file_overflow (f, ch) 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)) + if (f->_mode < 0 && f->_flags & (_IO_LINE_BUF+_IO_UNBUFFERED)) f->_IO_write_end = f->_IO_write_ptr; } if (ch == EOF) - return _IO_do_flush (f); + return _IO_new_do_write(f, f->_IO_write_base, + f->_IO_write_ptr - f->_IO_write_base); if (f->_IO_write_ptr == f->_IO_buf_end ) /* Buffer is really full */ if (_IO_do_flush (f) == EOF) return EOF; *f->_IO_write_ptr++ = ch; if ((f->_flags & _IO_UNBUFFERED) || ((f->_flags & _IO_LINE_BUF) && ch == '\n')) - if (_IO_do_flush (f) == EOF) + if (_IO_new_do_write(f, f->_IO_write_base, + f->_IO_write_ptr - f->_IO_write_base) == EOF) return EOF; return (unsigned char) ch; } @@ -483,14 +495,14 @@ _IO_new_file_sync (fp) return retval; } -_IO_fpos64_t +_IO_off64_t _IO_new_file_seekoff (fp, offset, dir, mode) _IO_FILE *fp; _IO_off64_t offset; int dir; int mode; { - _IO_fpos64_t result; + _IO_off64_t result; _IO_off64_t delta, new_offset; long count; /* POSIX.1 8.2.3.7 says that after a call the fflush() the file @@ -534,7 +546,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode) if (fp->_offset == _IO_pos_BAD) goto dumb; /* Make offset absolute, assuming current pointer is file_ptr(). */ - offset += _IO_pos_as_off (fp->_offset); + offset += fp->_offset; dir = _IO_seek_set; break; @@ -563,8 +575,8 @@ _IO_new_file_seekoff (fp, offset, dir, mode) && !_IO_in_backup (fp)) { /* Offset relative to start of main get area. */ - _IO_fpos64_t rel_offset = (offset - fp->_offset - + (fp->_IO_read_end - fp->_IO_read_base)); + _IO_off64_t rel_offset = (offset - fp->_offset + + (fp->_IO_read_end - fp->_IO_read_base)); if (rel_offset >= 0) { #if 0 @@ -678,7 +690,7 @@ _IO_file_read (fp, buf, size) return read (fp->_fileno, buf, size); } -_IO_fpos64_t +_IO_off64_t _IO_file_seek (fp, offset, dir) _IO_FILE *fp; _IO_off64_t offset; @@ -720,7 +732,7 @@ _IO_new_file_write (f, data, n) while (to_do > 0) { _IO_ssize_t count = write (f->_fileno, data, to_do); - if (count == EOF) + if (count < 0) { f->_flags |= _IO_ERR_SEEN; break; @@ -740,7 +752,7 @@ _IO_new_file_xsputn (f, data, n) const void *data; _IO_size_t n; { - register const char *s = (char *) data; + register const char *s = (const char *) data; _IO_size_t to_do = n; int must_flush = 0; _IO_size_t count; |