48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
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/*
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* getcwd.c --
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*
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* This file provides an implementation of the getcwd procedure
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* that uses getwd, for systems with getwd but without getcwd.
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*
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* Copyright (c) 1993 The Regents of the University of California.
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* Copyright (c) 1994 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCS: @(#) getcwd.c 1.5 96/02/15 12:08:20
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*/
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#include "tclInt.h"
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#include "tclPort.h"
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extern char *getwd _ANSI_ARGS_((char *pathname));
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char *
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getcwd(buf, size)
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char *buf; /* Where to put path for current directory. */
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size_t size; /* Number of bytes at buf. */
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{
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char realBuffer[MAXPATHLEN+1];
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int length;
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if (getwd(realBuffer) == NULL) {
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/*
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* There's not much we can do besides guess at an errno to
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* use for the result (the error message in realBuffer isn't
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* much use...).
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*/
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errno = EACCES;
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return NULL;
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}
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length = strlen(realBuffer);
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if (length >= size) {
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errno = ERANGE;
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return NULL;
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}
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strcpy(buf, realBuffer);
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return buf;
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}
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