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libbb: add bb_unsetenv (taken from hush).

Browse Source 
udhcpc: stop filtering environment passed to the script.
crond: fix uncovered potential bug (failing unsetenv)
mdev: fix uncovered potential bug (failing unsetenv)
tcp, udpsvd: fix uncovered potential bug (failing unsetenv)

function                                             old     new   delta
safe_setenv                                            -      58     +58
bb_unsetenv                                            -      55     +55
builtin_unset                                        139     138      -1
tcpudpsvd_main                                      1843    1830     -13
free_strings_and_unsetenv                             87      53     -34
udhcp_run_script                                    1186    1133     -53
safe_setenv4                                          62       -     -62
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/4 up/down: 113/-163)          Total: -50 bytes
This commit is contained in:
Denis Vlasenko
2008-12-30 05:05:31 +00:00
parent d6e8f9450c
commit 76ddc2e3e4
7 changed files with 65 additions and 57 deletions
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3
util-linux/mdev.c
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@@ -276,8 +276,7 @@ static void make_device(char *path, int delete)
putenv(s);
if (system(command) == -1)
bb_perror_msg_and_die("can't run '%s'", command);
s[4] = '\0';
unsetenv(s);
unsetenv("MDEV");
free(s);
free(command);
}