32 lines
655 B
C
32 lines
655 B
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <libc.h>
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int32_t
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readn(int f, void *av, int32_t n)
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{
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char *a;
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int32_t m, t;
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a = av;
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t = 0;
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while(t < n){
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m = read(f, a+t, n-t);
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if(m <= 0){
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if(t == 0)
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return m;
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break;
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}
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t += m;
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}
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return t;
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}
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