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unix: escape all null bytes in abstract unix domain socket

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Abstract unix domain socket may embed null characters,
these should be translated to '@' when printed out to
proc the same way the null prefix is currently being
translated.

This helps for tools such as netstat, lsof and the proc
based implementation in ss to show all the significant
bytes of the name (instead of getting cut at the first
null occurrence).

Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Isaac Boukris 2016-11-01 02:41:35 +02:00 committed by David S. Miller
parent 7bb9f731d1
commit e7947ea770
1 changed files with 2 additions and 1 deletions
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3
net/unix/af_unix.c
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@ -2812,7 +2812,8 @@ static int unix_seq_show(struct seq_file *seq, void *v)
i++;
}
for ( ; i < len; i++)
seq_putc(seq, u->addr->name->sun_path[i]);
seq_putc(seq, u->addr->name->sun_path[i] ?:
'@');
}
unix_state_unlock(s);
seq_putc(seq, '\n');