50 fcheck(FILE *stream, int flags)  in fcheck()  argument
53 	if ((stream->_flag & flags) != flags) {  in fcheck()
61 fclose(FILE *stream)  in fclose()  argument
63 	if (!fcheck(stream, F_OPEN))  in fclose()
66 	(void) close(stream->_file);  in fclose()
67 	stream->_flag = 0;  in fclose()
68 	stream->_file = -1;  in fclose()
69 	stream->_name[0] = '\0';  in fclose()
74 feof(FILE *stream)  in feof()  argument
76 	if (!fcheck(stream, F_OPEN))  in feof()
79 	return (stream->_len == stream->_offset);  in feof()
83 ferror(FILE *stream)  in ferror()  argument
85 	if (!fcheck(stream, F_OPEN))  in ferror()
88 	return ((stream->_flag & F_ERROR) != 0);  in ferror()
92 clearerr(FILE *stream)  in clearerr()  argument
94 	stream->_flag &= ~F_ERROR;  in clearerr()
98 fflush(FILE *stream)  in fflush()  argument
100 	if (!fcheck(stream, F_OPEN))  in fflush()
108 fgets(char *s, int n, FILE *stream)  in fgets()  argument
113 	if (!fcheck(stream, F_OPEN))  in fgets()
117 		cnt = read(stream->_file, &s[bytes], 1);  in fgets()
123 				stream->_flag |= F_ERROR;  in fgets()
134 			stream->_offset++;  in fgets()
151 	FILE		*stream;  in fopen()  local
185 		stream = &__iob[i];  in fopen()
186 		if ((stream->_flag & F_OPEN) == 0) {  in fopen()
191 			stream->_file = fd;  in fopen()
192 			stream->_flag |= F_OPEN;  in fopen()
193 			(void) strlcpy(stream->_name, filename,  in fopen()
194 			    sizeof (stream->_name));  in fopen()
195 			return (stream);  in fopen()
219 fprintf(FILE *stream, const char *format, ...)  in fprintf()  argument
224 	if (!fcheck(stream, F_OPEN))  in fprintf()
231 	if (stream != stdout && stream != stderr) {  in fprintf()
248 fread(void *ptr, size_t size, size_t nitems, FILE *stream)  in fread()  argument
254 	if (!fcheck(stream, F_OPEN))  in fread()
258 		bytes = read(stream->_file, &strp[totbytes], size);  in fread()
260 			stream->_flag |= F_ERROR;  in fread()
266 			stream->_offset += bytes;  in fread()
269 			(void) lseek(stream->_file, stream->_offset, SEEK_SET);  in fread()
281 fseek(FILE *stream, long offset, int whence)  in fseek()  argument
285 	if (!fcheck(stream, F_OPEN | F_SEEKABLE))  in fseek()
293 		new_offset = stream->_offset + (off_t)offset;  in fseek()
296 		new_offset = (off_t)stream->_len + (off_t)offset;  in fseek()
303 	if (new_offset > (off_t)stream->_len) {  in fseek()
311 	result = lseek(stream->_file, new_offset, SEEK_SET);  in fseek()
313 		stream->_offset = result;  in fseek()
315 		stream->_flag |= F_ERROR;  in fseek()
321 ftell(FILE *stream)  in ftell()  argument
323 	if (!fcheck(stream, F_OPEN | F_SEEKABLE))  in ftell()
326 	return ((long)stream->_offset);  in ftell()
330 fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream)  in fwrite()  argument
332 	if (!fcheck(stream, F_OPEN))  in fwrite()
339 	if (stream != stdout && stream != stderr) {  in fwrite()
350 setvbuf(FILE *stream, char *buf, int type, size_t size)  in setvbuf()  argument
352 	if (!fcheck(stream, F_OPEN))  in setvbuf()