Last change
on this file since 3147 was 2725, checked in by Bruno Cornec, 14 years ago |
- Update mindi-busybox to 1.18.3 to avoid problems with the tar command which is now failing on recent versions with busybox 1.7.3
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File size:
1015 bytes
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * xgetcwd.c -- return current directory with unlimited length
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4 | * Copyright (C) 1992, 1996 Free Software Foundation, Inc.
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5 | * Written by David MacKenzie <djm@gnu.ai.mit.edu>.
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6 | *
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7 | * Special function for busybox written by Vladimir Oleynik <dzo@simtreas.ru>
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8 | *
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9 | * Licensed under GPLv2, see file LICENSE in this source tree.
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10 | */
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11 |
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12 | #include "libbb.h"
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13 |
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14 | /* Return the current directory, newly allocated, arbitrarily long.
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15 | Return NULL and set errno on error.
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16 | If argument is not NULL (previous usage allocate memory), call free()
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17 | */
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18 |
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19 | char* FAST_FUNC
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20 | xrealloc_getcwd_or_warn(char *cwd)
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21 | {
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22 | #define PATH_INCR 64
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23 |
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24 | char *ret;
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25 | unsigned path_max;
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26 |
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27 | path_max = 128; /* 128 + 64 should be enough for 99% of cases */
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28 |
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29 | while (1) {
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30 | path_max += PATH_INCR;
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31 | cwd = xrealloc(cwd, path_max);
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32 | ret = getcwd(cwd, path_max);
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33 | if (ret == NULL) {
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34 | if (errno == ERANGE)
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35 | continue;
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36 | free(cwd);
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37 | bb_perror_msg("getcwd");
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38 | return NULL;
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39 | }
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40 | cwd = xrealloc(cwd, strlen(cwd) + 1);
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41 | return cwd;
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42 | }
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43 | }
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