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1.1 root 1: #include <stdio.h>
2:
3: char *malloc();
4:
5: _flsbuf(c, iop)
6: register FILE *iop;
7: {
8: register char *base;
9: register n, rn;
10: char c1;
11: extern char _sobuf[];
12:
13: if ((iop->_flag&_IOWRT)==0)
14: return(EOF);
15: tryagain:
16: if (iop->_flag&_IONBF) {
17: c1 = c;
18: rn = 1;
19: n = write(fileno(iop), &c1, rn);
20: iop->_cnt = 0;
21: } else {
22: if ((base=iop->_base)==NULL) {
23: if (iop==stdout) {
24: if (isatty(fileno(stdout))) {
25: iop->_flag |= _IONBF;
26: goto tryagain;
27: }
28: iop->_base = _sobuf;
29: iop->_ptr = _sobuf;
30: goto tryagain;
31: }
32: if ((iop->_base=base=malloc(BUFSIZ)) == NULL) {
33: iop->_flag |= _IONBF;
34: goto tryagain;
35: }
36: iop->_flag |= _IOMYBUF;
37: rn = n = 0;
38: } else if ((rn = n = iop->_ptr - base) > 0) {
39: iop->_ptr = base;
40: n = write(fileno(iop), base, n);
41: }
42: iop->_cnt = BUFSIZ-1;
43: *base++ = c;
44: iop->_ptr = base;
45: }
46: if (rn != n) {
47: iop->_flag |= _IOERR;
48: return(EOF);
49: }
50: return(c);
51: }
52:
53: fflush(iop)
54: register struct _iobuf *iop;
55: {
56: register char *base;
57: register n;
58:
59: if ((iop->_flag&(_IONBF|_IOWRT))==_IOWRT
60: && (base=iop->_base)!=NULL && (n=iop->_ptr-base)>0) {
61: iop->_ptr = base;
62: iop->_cnt = BUFSIZ;
63: if (write(fileno(iop), base, n)!=n) {
64: iop->_flag |= _IOERR;
65: return(EOF);
66: }
67: }
68: return(0);
69: }
70:
71: /*
72: * Flush buffers on exit
73: */
74:
75: _cleanup()
76: {
77: register struct _iobuf *iop;
78: extern struct _iobuf *_lastbuf;
79:
80: for (iop = _iob; iop < _lastbuf; iop++)
81: fclose(iop);
82: }
83:
84: fclose(iop)
85: register struct _iobuf *iop;
86: {
87: register r;
88:
89: r = EOF;
90: if (iop->_flag&(_IOREAD|_IOWRT) && (iop->_flag&_IOSTRG)==0) {
91: r = fflush(iop);
92: if (close(fileno(iop)) < 0)
93: r = EOF;
94: if (iop->_flag&_IOMYBUF)
95: free(iop->_base);
96: if (iop->_flag&(_IOMYBUF|_IONBF))
97: iop->_base = NULL;
98: }
99: iop->_flag &= ~(_IOREAD|_IOWRT|_IONBF|_IOMYBUF|_IOERR|_IOEOF|_IOSTRG);
100: iop->_cnt = 0;
101: return(r);
102: }
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