vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/* xgetcwd.c -- return current directory with unlimited length
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Copyright (C) 1992, 1996, 2000, 2003, 2005-2006, 2011, 2020 Free
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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 3 of the License, or
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(at your option) 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
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#include <config.h>
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/* Specification. */
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#include "xgetcwd.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "pathmax.h"
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/* In this file, PATH_MAX is the size of an initial memory allocation. */
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#ifndef PATH_MAX
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# define PATH_MAX 8192
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#endif
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#if HAVE_GETCWD
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# ifdef VMS
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/* We want the directory in Unix syntax, not in VMS syntax. */
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# define getcwd(Buf, Max) (getcwd) (Buf, Max, 0)
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# else
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char *getcwd ();
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# endif
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#else
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char *getwd ();
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# define getcwd(Buf, Max) getwd (Buf)
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#endif
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#include "xalloc.h"
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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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xgetcwd (void)
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{
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char *ret;
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unsigned path_max;
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char buf[1024];
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errno = 0;
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ret = getcwd (buf, sizeof (buf));
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if (ret != NULL)
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return xstrdup (buf);
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if (errno != ERANGE)
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return NULL;
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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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for (;;)
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{
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char *cwd = XNMALLOC (path_max, char);
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errno = 0;
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ret = getcwd (cwd, path_max);
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if (ret != NULL)
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return ret;
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if (errno != ERANGE)
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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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free (cwd);
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path_max += path_max / 16;
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path_max += 32;
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}
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}
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