Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_disco_netlink_generated_netlink_seccomp_h
3 : #define HEADER_fd_src_disco_netlink_generated_netlink_seccomp_h
4 :
5 : #if defined(__linux__)
6 :
7 : #include "../../../../src/util/fd_util_base.h"
8 : #include <linux/audit.h>
9 : #include <linux/capability.h>
10 : #include <linux/filter.h>
11 : #include <linux/seccomp.h>
12 : #include <linux/bpf.h>
13 : #include <linux/unistd.h>
14 : #include <sys/syscall.h>
15 : #include <signal.h>
16 : #include <stddef.h>
17 :
18 : #if defined(__i386__)
19 : # define ARCH_NR AUDIT_ARCH_I386
20 : #elif defined(__x86_64__)
21 : # define ARCH_NR AUDIT_ARCH_X86_64
22 : #elif defined(__aarch64__)
23 : # define ARCH_NR AUDIT_ARCH_AARCH64
24 : #elif defined(__riscv) && __riscv_xlen == 64
25 : # define ARCH_NR AUDIT_ARCH_RISCV64
26 : #else
27 : # error "Target architecture is unsupported by seccomp."
28 : #endif
29 :
30 : #define FD_SECCOMP_ARG_LO_OFFSET(argno) ( offsetof( struct seccomp_data, args[(argno)] ) )
31 : #define FD_SECCOMP_ARG_HI_OFFSET(argno) ( offsetof( struct seccomp_data, args[(argno)] ) + 4U )
32 :
33 : #define FD_SECCOMP_ARG_LO(x) ((uint)(((ulong)(uint)(int)(x) ) & 0xffffffffUL))
34 : #define FD_SECCOMP_ARG_HI(x) ((uint)(((ulong)(x) >> 32) & 0xffffffffUL))
35 :
36 : static const uint sock_filter_policy_netlink_instr_cnt = 85;
37 :
38 0 : static void populate_sock_filter_policy_netlink( ulong out_cnt, struct sock_filter out[ static 85 ], uint logfile_fd, uint nl_mon_fd, uint nl_req_fd, uint arp_probe_fd, uint epoll_inner_fd, uint epoll_outer_fd ) {
39 0 : FD_TEST( out_cnt >= 85 );
40 0 : struct sock_filter filter[85] = {
41 : /* validate architecture */
42 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, arch ) )),
43 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ARCH_NR, 0, /* RET_KILL_PROCESS */ 9 ),
44 : /* load syscall number */
45 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, nr ) )),
46 : /* check write */
47 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_write, /* check_write */ 9, 0 ),
48 : /* check fsync */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 14, 0 ),
50 : /* check sendto */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_sendto, /* check_sendto */ 17, 0 ),
52 : /* check recvfrom */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_recvfrom, /* check_recvfrom */ 42, 0 ),
54 : /* check epoll_ctl */
55 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_epoll_ctl, /* check_epoll_ctl */ 59, 0 ),
56 : /* check clock_nanosleep */
57 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_clock_nanosleep, /* check_clock_nanosleep */ 64, 0 ),
58 : /* check futex */
59 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_futex, /* check_futex */ 69, 0 ),
60 : /* allow restart_syscall */
61 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_restart_syscall, /* RET_ALLOW */ 1, 0 ),
62 : // RET_KILL_PROCESS:
63 : /* default deny */
64 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
65 : // RET_ALLOW:
66 : /* allow */
67 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
68 : // check_write:
69 : /* arg 0 low 32 bits */
70 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
71 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000002U, /* write_ALLOW */ 3, /* or_1 */ 0 ),
72 : // or_1:
73 : /* arg 0 low 32 bits */
74 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
75 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(logfile_fd)), /* write_ALLOW */ 1, /* write_KILL */ 0 ),
76 : // write_KILL:
77 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
78 : // write_ALLOW:
79 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
80 : // check_fsync:
81 : /* arg 0 low 32 bits */
82 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
83 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(logfile_fd)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
84 : // fsync_KILL:
85 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
86 : // fsync_ALLOW:
87 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
88 : // check_sendto:
89 : /* arg 0 low 32 bits */
90 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
91 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(nl_req_fd)), /* and_3 */ 0, /* or_2 */ 8 ),
92 : // and_3:
93 : /* arg 3 low 32 bits */
94 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
95 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_4 */ 0, /* or_2 */ 6 ),
96 : // and_4:
97 : /* arg 4 high 32 bits */
98 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(4)),
99 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_6 */ 0, /* or_2 */ 4 ),
100 : // arg_hi_eq_6:
101 : /* arg 4 low 32 bits */
102 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
103 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_5 */ 0, /* or_2 */ 2 ),
104 : // and_5:
105 : /* arg 5 low 32 bits */
106 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(5)),
107 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* sendto_ALLOW */ 15, /* or_2 */ 0 ),
108 : // or_2:
109 : /* arg 0 low 32 bits */
110 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
111 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(arp_probe_fd)), /* and_7 */ 0, /* sendto_KILL */ 12 ),
112 : // and_7:
113 : /* arg 1 high 32 bits */
114 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(1)),
115 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_9 */ 0, /* sendto_KILL */ 10 ),
116 : // arg_hi_eq_9:
117 : /* arg 1 low 32 bits */
118 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
119 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_8 */ 0, /* sendto_KILL */ 8 ),
120 : // and_8:
121 : /* arg 2 high 32 bits */
122 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(2)),
123 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_11 */ 0, /* sendto_KILL */ 6 ),
124 : // arg_hi_eq_11:
125 : /* arg 2 low 32 bits */
126 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
127 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_10 */ 0, /* sendto_KILL */ 4 ),
128 : // and_10:
129 : /* arg 3 low 32 bits */
130 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
131 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(MSG_DONTWAIT), /* and_12 */ 0, /* sendto_KILL */ 2 ),
132 : // and_12:
133 : /* arg 5 low 32 bits */
134 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(5)),
135 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(FD_SOCKADDR_IN_SZ), /* sendto_ALLOW */ 1, /* sendto_KILL */ 0 ),
136 : // sendto_KILL:
137 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
138 : // sendto_ALLOW:
139 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
140 : // check_recvfrom:
141 : /* arg 0 low 32 bits */
142 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
143 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(nl_mon_fd)), /* and_13 */ 2, /* or_14 */ 0 ),
144 : // or_14:
145 : /* arg 0 low 32 bits */
146 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
147 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(nl_req_fd)), /* and_13 */ 0, /* recvfrom_KILL */ 12 ),
148 : // and_13:
149 : /* arg 3 low 32 bits */
150 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
151 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_15 */ 2, /* or_16 */ 0 ),
152 : // or_16:
153 : /* arg 3 low 32 bits */
154 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
155 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(MSG_DONTWAIT), /* and_15 */ 0, /* recvfrom_KILL */ 8 ),
156 : // and_15:
157 : /* arg 4 high 32 bits */
158 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(4)),
159 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_18 */ 0, /* recvfrom_KILL */ 6 ),
160 : // arg_hi_eq_18:
161 : /* arg 4 low 32 bits */
162 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
163 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_17 */ 0, /* recvfrom_KILL */ 4 ),
164 : // and_17:
165 : /* arg 5 high 32 bits */
166 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(5)),
167 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_19 */ 0, /* recvfrom_KILL */ 2 ),
168 : // arg_hi_eq_19:
169 : /* arg 5 low 32 bits */
170 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(5)),
171 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* recvfrom_ALLOW */ 1, /* recvfrom_KILL */ 0 ),
172 : // recvfrom_KILL:
173 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
174 : // recvfrom_ALLOW:
175 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
176 : // check_epoll_ctl:
177 : /* arg 0 low 32 bits */
178 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
179 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(epoll_outer_fd)), /* and_20 */ 0, /* epoll_ctl_KILL */ 2 ),
180 : // and_20:
181 : /* arg 2 low 32 bits */
182 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
183 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(epoll_inner_fd)), /* epoll_ctl_ALLOW */ 1, /* epoll_ctl_KILL */ 0 ),
184 : // epoll_ctl_KILL:
185 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
186 : // epoll_ctl_ALLOW:
187 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
188 : // check_clock_nanosleep:
189 : /* arg 0 low 32 bits */
190 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
191 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(CLOCK_REALTIME), /* and_21 */ 0, /* clock_nanosleep_KILL */ 2 ),
192 : // and_21:
193 : /* arg 1 low 32 bits */
194 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
195 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* clock_nanosleep_ALLOW */ 1, /* clock_nanosleep_KILL */ 0 ),
196 : // clock_nanosleep_KILL:
197 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
198 : // clock_nanosleep_ALLOW:
199 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
200 : // check_futex:
201 : /* arg 1 low 32 bits */
202 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
203 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(FUTEX_WAIT_BITSET), /* and_22 */ 0, /* futex_KILL */ 2 ),
204 : // and_22:
205 : /* arg 2 low 32 bits */
206 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
207 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* futex_ALLOW */ 1, /* futex_KILL */ 0 ),
208 : // futex_KILL:
209 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
210 : // futex_ALLOW:
211 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
212 0 : };
213 0 : fd_memcpy( out, filter, sizeof( filter ) );
214 0 : }
215 :
216 : #endif /* defined(__linux__) */
217 :
218 : #endif /* HEADER_fd_src_disco_netlink_generated_netlink_seccomp_h */
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