57e58c3aa7
things fixed in here, including the '-ko' vs. -A problem with remote cvs which caused all files with -ko to be resent each time (which is damn painful over a modem, I can tell you). It also found a heap of stray empty directories that should have been pruned with the -P flag to cvs update but were not for some reason. It also has the fully integrated rcs and diff, so no more fork/exec overheads for rcs,ci,patch,diff,etc. This means that it parses the control data in the rcs files only once rather than twice or more. If the 'cvs diff' vs. Index thing is going to be fixed for future patch compatability, this is the place to do it.
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/* xgetwd.c -- return current directory with unlimited length
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Copyright (C) 1992, 1997 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details. */
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/* Derived from xgetcwd.c in e.g. the GNU sh-utils. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "system.h"
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#include <stdio.h>
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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#include <sys/types.h>
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/* Amount by which to increase buffer size when allocating more space. */
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#define PATH_INCR 32
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char *xmalloc ();
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char *xrealloc ();
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/* Return the current directory, newly allocated, arbitrarily long.
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Return NULL and set errno on error. */
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char *
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xgetwd ()
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{
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char *cwd;
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char *ret;
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unsigned path_max;
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errno = 0;
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path_max = (unsigned) PATH_MAX;
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path_max += 2; /* The getcwd docs say to do this. */
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cwd = xmalloc (path_max);
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errno = 0;
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while ((ret = getcwd (cwd, path_max)) == NULL && errno == ERANGE)
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{
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path_max += PATH_INCR;
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cwd = xrealloc (cwd, path_max);
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errno = 0;
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}
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if (ret == NULL)
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{
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int save_errno = errno;
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free (cwd);
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errno = save_errno;
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return NULL;
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}
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return cwd;
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}
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