Last change
on this file since 3595 was 3320, checked in by Bruno Cornec, 10 years ago |
- Re-add (thanks git BTW) the 2.2.9 branch which had been destroyed in
the move to 3.0
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-
Property svn:eol-style
set to
native
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File size:
1015 bytes
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Rev | Line | |
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[3320] | 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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