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[
{
"match": [ /* qemu-pr-helper and similar */
{ "connect": { "addr": { "family": "unix", "path": "/var/run/pr-helper.sock" }, "fd": { "tag": "fd" } } }
],
"call": { "connect": { "addr": { "family": "unix", "path": "/var/run/pr-helper.sock" }, "ret": "y" } },
"inject": { "what": "fd", "new": { "tag": "y" }, "old": { "tag": "fd" }, "return": 0 }
},
{
"match": [ /* qemu creates a tap interface */
{ "ioctl": { "path": "/dev/net/tun", "request": "TUNSETIFF", "ifr": { "name": "tap0", "flags": "IFF_TUN" } } }
],
"limit": { "scope": "process", "count": 1 },
"call": { "ioctl": { "request": "TUNSETIFF", "path": "/dev/net/tun", "ifr": { "name": "tap0", "flags": "IFF_TUN", "ret": "x" } } },
"return": { "tag": "x" }
},
{
"match": [ /* CVE-2022-0185-style */
{ "unshare": { "flags": { "has": { "newuser": true, "newnet": false } } } }
],
"block": { }
},
{
"match": [ /* passt */
{ "unshare": { "flags": { "has": [ "ipc", "mount", "uts", "pid" ] } } }
],
"block": { }
},
{
"match": [ /* Giuseppe's example */
{ "mknod": { "path": { "tag": "path" }, "mode": "c", "major": 1, "minor": { "in": [ 3, 5, 7, 8, 9 ], "tag": "minor" } } }
],
"context": { "userns": "init", "mountns": "caller" },
"call": { "mknod": { "path": { "tag": "path" }, "mode": "c", "major": 1, "minor": { "tag": "minor" }, "ret": "x" } },
"inject": { "what": "fd", "new": { "tag": "x" } },
"return": { "tag": "x" }
}
]
/*
* INTFLAGS, LONGFLAGS, U32FLAGS
*
* "field": { "in": [ "ipc", "mount", "uts" ] }
* flags & set
* !!(flags & (ipc | mount | ns))
*
* "field": { "all": [ "ipc", "mount", "uts" ] }
* flags & set == set
* flags & (ipc | mount | ns) == (ipc | mount | ns)
*
* "field": { "not": [ "ipc", "mount", "uts" ] }
* !(flags & set)
*
* "field": { "ipc": false, "mount": true, "uts": false }
* flags & set == set
* !(flags & ipc) && (flags & mount) && !(flags & utc)
*
* "field": { "ipc" }
* flags == ipc
*
* INTMASK
* value = (target value & known values)
*
* INT, LONG, U32
* "arg": { "in": [ 0, 1 ] }
* arg == 0 || arg == 1
*/
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