Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_discof_votor_generated_fd_votor_tile_seccomp_h
3 : #define HEADER_fd_src_discof_votor_generated_fd_votor_tile_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_fd_votor_tile_instr_cnt = 57;
37 :
38 0 : static void populate_sock_filter_policy_fd_votor_tile( ulong out_cnt, struct sock_filter out[ static 57 ], uint logfile_fd, uint vote_history_fd_dir, uint vote_history_fd_swp, uint vote_history_fd, uint vote_history_fd_bak ) {
39 0 : FD_TEST( out_cnt >= 57 );
40 0 : struct sock_filter filter[57] = {
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 renameat2 */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_renameat2, /* check_renameat2 */ 17, 0 ),
52 : /* check pwritev2 */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_pwritev2, /* check_pwritev2 */ 28, 0 ),
54 : /* check ftruncate */
55 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_ftruncate, /* check_ftruncate */ 35, 0 ),
56 : /* allow getrandom */
57 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_getrandom, /* RET_ALLOW */ 3, 0 ),
58 : /* check futex */
59 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_futex, /* check_futex */ 41, 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_renameat2:
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)(vote_history_fd_dir)), /* and_2 */ 0, /* renameat2_KILL */ 8 ),
92 : // and_2:
93 : /* arg 2 low 32 bits */
94 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
95 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd_dir)), /* and_3 */ 0, /* renameat2_KILL */ 6 ),
96 : // and_3:
97 : /* arg 4 low 32 bits */
98 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
99 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* renameat2_ALLOW */ 5, /* or_4 */ 0 ),
100 : // or_4:
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, 0x00000001U, /* renameat2_ALLOW */ 3, /* or_5 */ 0 ),
104 : // or_5:
105 : /* arg 4 low 32 bits */
106 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
107 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000002U, /* renameat2_ALLOW */ 1, /* renameat2_KILL */ 0 ),
108 : // renameat2_KILL:
109 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
110 : // renameat2_ALLOW:
111 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
112 : // check_pwritev2:
113 : /* arg 0 low 32 bits */
114 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
115 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd_swp)), /* pwritev2_ALLOW */ 5, /* or_6 */ 0 ),
116 : // or_6:
117 : /* arg 0 low 32 bits */
118 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
119 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd)), /* pwritev2_ALLOW */ 3, /* or_7 */ 0 ),
120 : // or_7:
121 : /* arg 0 low 32 bits */
122 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
123 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd_bak)), /* pwritev2_ALLOW */ 1, /* pwritev2_KILL */ 0 ),
124 : // pwritev2_KILL:
125 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
126 : // pwritev2_ALLOW:
127 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
128 : // check_ftruncate:
129 : /* arg 0 low 32 bits */
130 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
131 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd_swp)), /* ftruncate_ALLOW */ 5, /* or_8 */ 0 ),
132 : // or_8:
133 : /* arg 0 low 32 bits */
134 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
135 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd)), /* ftruncate_ALLOW */ 3, /* or_9 */ 0 ),
136 : // or_9:
137 : /* arg 0 low 32 bits */
138 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
139 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(vote_history_fd_bak)), /* ftruncate_ALLOW */ 1, /* ftruncate_KILL */ 0 ),
140 : // ftruncate_KILL:
141 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
142 : // ftruncate_ALLOW:
143 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
144 : // check_futex:
145 : /* arg 1 low 32 bits */
146 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
147 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(FUTEX_WAIT_BITSET), /* and_10 */ 0, /* futex_KILL */ 2 ),
148 : // and_10:
149 : /* arg 2 low 32 bits */
150 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
151 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* futex_ALLOW */ 1, /* futex_KILL */ 0 ),
152 : // futex_KILL:
153 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
154 : // futex_ALLOW:
155 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
156 0 : };
157 0 : fd_memcpy( out, filter, sizeof( filter ) );
158 0 : }
159 :
160 : #endif /* defined(__linux__) */
161 :
162 : #endif /* HEADER_fd_src_discof_votor_generated_fd_votor_tile_seccomp_h */
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