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Watch this:
$ upstream-qemu -nodefaults -S -vnc :0,acl,sasl -monitor stdio
QEMU 1.5.50 monitor - type 'help' for more information
(qemu) acl_add vnc.username drei allow
acl: added rule at position 1
(qemu) acl_show vnc.username
policy: deny
1: allow drei
(qemu) acl_add vnc.username zwei allow 1
acl: added rule at position 2
(qemu) acl_show vnc.username
policy: deny
1: allow drei
2: allow zwei
(qemu) acl_add vnc.username eins allow 1
acl: added rule at position 1
(qemu) acl_show vnc.username
policy: deny
1: allow eins
2: allow drei
3: allow zwei
The second acl_add inserts at position 2 instead of 1.
Root cause is an off-by-one in qemu_acl_insert(): when index ==
acl->nentries, it appends instead of inserting before the last list
element.
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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It leaks memory and fails to adjust qemu_acl member nentries. Future
acl_add become confused: can misreport the position, and can silently
fail to add.
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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