Rev 4874 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 4874 | Rev 4921 | ||
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Line 103... | Line 103... | ||
103 | struct _reent *ptr _AND |
103 | struct _reent *ptr _AND |
104 | register FILE * fp) |
104 | register FILE * fp) |
105 | { |
105 | { |
106 | _fpos_t pos; |
106 | _fpos_t pos; |
Line 107... | Line -... | ||
107 | - | ||
108 | /* Ensure stdio is set up. */ |
- | |
109 | - | ||
110 | CHECK_INIT (ptr, fp); |
- | |
111 | - | ||
112 | _flockfile (fp); |
- | |
113 | - | ||
114 | if (fp->_seek == NULL) |
- | |
115 | { |
- | |
116 | ptr->_errno = ESPIPE; |
- | |
117 | _funlockfile (fp); |
- | |
118 | return -1L; |
- | |
119 | } |
- | |
120 | - | ||
121 | /* Find offset of underlying I/O object, then adjust for buffered |
- | |
122 | bytes. Flush a write stream, since the offset may be altered if |
- | |
123 | the stream is appending. Do not flush a read stream, since we |
- | |
124 | must not lose the ungetc buffer. */ |
- | |
125 | if (fp->_flags & __SWR) |
107 | |
126 | _fflush_r (ptr, fp); |
- | |
127 | if (fp->_flags & __SOFF) |
- | |
128 | pos = fp->_offset; |
- | |
129 | else |
- | |
130 | { |
- | |
131 | pos = fp->_seek (ptr, fp->_cookie, (_fpos_t) 0, SEEK_CUR); |
- | |
132 | if (pos == -1L) |
- | |
133 | { |
- | |
134 | _funlockfile (fp); |
- | |
135 | return pos; |
- | |
136 | } |
- | |
137 | } |
- | |
138 | if (fp->_flags & __SRD) |
- | |
139 | { |
- | |
140 | /* |
- | |
141 | * Reading. Any unread characters (including |
- | |
142 | * those from ungetc) cause the position to be |
- | |
143 | * smaller than that in the underlying object. |
- | |
144 | */ |
- | |
145 | pos -= fp->_r; |
- | |
146 | if (HASUB (fp)) |
- | |
147 | pos -= fp->_ur; |
- | |
148 | } |
- | |
149 | else if ((fp->_flags & __SWR) && fp->_p != NULL) |
- | |
150 | { |
- | |
151 | /* |
- | |
152 | * Writing. Any buffered characters cause the |
- | |
153 | * position to be greater than that in the |
- | |
154 | * underlying object. |
- | |
155 | */ |
- | |
156 | pos += fp->_p - fp->_bf._base; |
- | |
157 | } |
- | |
158 | - | ||
159 | _funlockfile (fp); |
108 | pos = _ftello_r (ptr, fp); |
160 | if ((long)pos != pos) |
109 | if ((long)pos != pos) |
161 | { |
110 | { |
162 | pos = -1; |
111 | pos = -1; |
163 | ptr->_errno = EOVERFLOW; |
112 | ptr->_errno = EOVERFLOW; |
164 | } |
113 | } |
165 | return pos; |
114 | return (long)pos; |
Line 166... | Line 115... | ||
166 | } |
115 | } |
Line 167... | Line 116... | ||
167 | 116 |