Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_disco_net_sock_generated_fd_sock_tile_seccomp_h
3 : #define HEADER_fd_src_disco_net_sock_generated_fd_sock_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 : #else
25 : # error "Target architecture is unsupported by seccomp."
26 : #endif
27 :
28 : #define FD_SECCOMP_ARG_LO_OFFSET(argno) ( offsetof( struct seccomp_data, args[(argno)] ) )
29 : #define FD_SECCOMP_ARG_HI_OFFSET(argno) ( offsetof( struct seccomp_data, args[(argno)] ) + 4U )
30 :
31 : #define FD_SECCOMP_ARG_LO(x) ((uint)(((ulong)(uint)(int)(x) ) & 0xffffffffUL))
32 : #define FD_SECCOMP_ARG_HI(x) ((uint)(((ulong)(x) >> 32) & 0xffffffffUL))
33 :
34 : static const uint sock_filter_policy_fd_sock_tile_instr_cnt = 42;
35 :
36 0 : static void populate_sock_filter_policy_fd_sock_tile( ulong out_cnt, struct sock_filter out[ static 42 ], uint logfile_fd, uint tx_fd, uint rx_fd0, uint rx_fd1 ) {
37 0 : FD_TEST( out_cnt >= 42 );
38 0 : struct sock_filter filter[42] = {
39 : /* validate architecture */
40 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, arch ) )),
41 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ARCH_NR, 0, /* RET_KILL_PROCESS */ 6 ),
42 : /* load syscall number */
43 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, nr ) )),
44 : /* allow ppoll */
45 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_ppoll, /* RET_ALLOW */ 5, 0 ),
46 : /* check recvmmsg */
47 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_recvmmsg, /* check_recvmmsg */ 5, 0 ),
48 : /* check sendmmsg */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_sendmmsg, /* check_sendmmsg */ 18, 0 ),
50 : /* check write */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_write, /* check_write */ 25, 0 ),
52 : /* check fsync */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 30, 0 ),
54 : // RET_KILL_PROCESS:
55 : /* default deny */
56 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
57 : // RET_ALLOW:
58 : /* allow */
59 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
60 : // check_recvmmsg:
61 : /* arg 0 low 32 bits */
62 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
63 0 : BPF_JUMP( BPF_JMP | BPF_JGE | BPF_K, ((uint)(rx_fd0)), /* and_2 */ 0, /* recvmmsg_KILL */ 10 ),
64 : // and_2:
65 : /* arg 0 low 32 bits */
66 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
67 0 : BPF_JUMP( BPF_JMP | BPF_JGE | BPF_K, ((uint)(rx_fd1)), /* recvmmsg_KILL */ 8, /* and_1 */ 0 ),
68 : // and_1:
69 : /* arg 2 low 32 bits */
70 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
71 0 : BPF_JUMP( BPF_JMP | BPF_JGT | BPF_K, 0x00000040U, /* recvmmsg_KILL */ 6, /* and_3 */ 0 ),
72 : // and_3:
73 : /* arg 3 low 32 bits */
74 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
75 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(MSG_DONTWAIT), /* and_4 */ 0, /* recvmmsg_KILL */ 4 ),
76 : // and_4:
77 : /* arg 4 high 32 bits */
78 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(4)),
79 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_5 */ 0, /* recvmmsg_KILL */ 2 ),
80 : // arg_hi_eq_5:
81 : /* arg 4 low 32 bits */
82 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
83 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* recvmmsg_ALLOW */ 1, /* recvmmsg_KILL */ 0 ),
84 : // recvmmsg_KILL:
85 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
86 : // recvmmsg_ALLOW:
87 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
88 : // check_sendmmsg:
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)(tx_fd)), /* and_6 */ 0, /* sendmmsg_KILL */ 4 ),
92 : // and_6:
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_JGT | BPF_K, 0x00000040U, /* sendmmsg_KILL */ 2, /* and_7 */ 0 ),
96 : // and_7:
97 : /* arg 3 low 32 bits */
98 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
99 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(MSG_DONTWAIT), /* sendmmsg_ALLOW */ 1, /* sendmmsg_KILL */ 0 ),
100 : // sendmmsg_KILL:
101 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
102 : // sendmmsg_ALLOW:
103 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
104 : // check_write:
105 : /* arg 0 low 32 bits */
106 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
107 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000002U, /* write_ALLOW */ 3, /* or_8 */ 0 ),
108 : // or_8:
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)(logfile_fd)), /* write_ALLOW */ 1, /* write_KILL */ 0 ),
112 : // write_KILL:
113 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
114 : // write_ALLOW:
115 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
116 : // check_fsync:
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)(logfile_fd)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
120 : // fsync_KILL:
121 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
122 : // fsync_ALLOW:
123 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
124 0 : };
125 0 : fd_memcpy( out, filter, sizeof( filter ) );
126 0 : }
127 :
128 : #endif /* defined(__linux__) */
129 :
130 : #endif /* HEADER_fd_src_disco_net_sock_generated_fd_sock_tile_seccomp_h */
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