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authorJonathan Liu <net147@gmail.com>2013-05-21 17:01:55 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2013-05-21 17:01:55 +0200
commitb6dc13c2d3754704b1bf5af4e6b957b48585102f (patch)
treefd04dfd6847a6e194fa92676fd2fec8574567dba /coreutils/tail.c
parent9cb1e2f86b08da469bb4680cf68e927534b5a2ab (diff)
downloadbusybox-b6dc13c2d3754704b1bf5af4e6b957b48585102f.tar.gz
sulogin: allow system maintenance login if root password is empty
The current password checking is unable to distinguish between the user entering an empty password or pressing Control-D. As a result, an empty password always results in normal startup. We modify bb_ask to return NULL if Control-D is pressed without entering a password. The sulogin applet is then modified to only proceed to normal startup if bb_ask returns NULL. This covers EOF with no password, interrupt by timeout and ^C. Signed-off-by: Jonathan Liu <net147@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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