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init: do not use bb_sanitize_stdio(), "/dev/null" may be missing (yet)

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This commit is contained in:
Denis Vlasenko 2008-03-17 13:26:51 +00:00
parent 9c8c038981
commit fb274df079
1 changed files with 16 additions and 2 deletions
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18
init/init.c
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@ -219,8 +219,22 @@ static void console_init(void)
}
messageD(L_LOG, "console='%s'", s);
} else {
/* Make sure fd 0,1,2 are not closed */
bb_sanitize_stdio();
/* Make sure fd 0,1,2 are not closed
* (so that they won't be used by future opens) */
/* bb_sanitize_stdio(); - WRONG.
* Fail if "/dev/null" doesnt exist, and for init
* this is a real possibility! Open code it instead. */
int fd = open(bb_dev_null, O_RDWR);
if (fd < 0) {
/* Give me _ANY_ open descriptor! */
fd = xopen("/", O_RDONLY); /* we don't believe this can fail */
}
while ((unsigned)fd < 2)
fd = dup(fd);
if (fd > 2)
close (fd);
}
s = getenv("TERM");