Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_app_shared_commands_run_generated_pidns_seccomp_h
3 : #define HEADER_fd_src_app_shared_commands_run_generated_pidns_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_pidns_instr_cnt = 34;
37 :
38 0 : static void populate_sock_filter_policy_pidns( ulong out_cnt, struct sock_filter out[ static 34 ], uint logfile_fd ) {
39 0 : FD_TEST( out_cnt >= 34 );
40 0 : struct sock_filter filter[34] = {
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 */ 6 ),
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 */ 6, 0 ),
48 : /* check fsync */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 11, 0 ),
50 : /* check poll */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_poll, /* check_poll */ 14, 0 ),
52 : /* check wait4 */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_wait4, /* check_wait4 */ 17, 0 ),
54 : /* allow exit_group */
55 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_exit_group, /* RET_ALLOW */ 1, 0 ),
56 : // RET_KILL_PROCESS:
57 : /* default deny */
58 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
59 : // RET_ALLOW:
60 : /* allow */
61 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
62 : // check_write:
63 : /* arg 0 low 32 bits */
64 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
65 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000002U, /* write_ALLOW */ 3, /* or_1 */ 0 ),
66 : // or_1:
67 : /* arg 0 low 32 bits */
68 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
69 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(logfile_fd)), /* write_ALLOW */ 1, /* write_KILL */ 0 ),
70 : // write_KILL:
71 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
72 : // write_ALLOW:
73 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
74 : // check_fsync:
75 : /* arg 0 low 32 bits */
76 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
77 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(logfile_fd)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
78 : // fsync_KILL:
79 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
80 : // fsync_ALLOW:
81 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
82 : // check_poll:
83 : /* arg 2 low 32 bits */
84 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
85 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO((int)-1), /* poll_ALLOW */ 1, /* poll_KILL */ 0 ),
86 : // poll_KILL:
87 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
88 : // poll_ALLOW:
89 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
90 : // check_wait4:
91 : /* arg 2 low 32 bits */
92 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
93 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO((int)__WALL | (int)WNOHANG), /* and_2 */ 2, /* or_3 */ 0 ),
94 : // or_3:
95 : /* arg 2 low 32 bits */
96 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
97 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO((int)__WALL), /* and_2 */ 0, /* wait4_KILL */ 4 ),
98 : // and_2:
99 : /* arg 3 high 32 bits */
100 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(3)),
101 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_4 */ 0, /* wait4_KILL */ 2 ),
102 : // arg_hi_eq_4:
103 : /* arg 3 low 32 bits */
104 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(3)),
105 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* wait4_ALLOW */ 1, /* wait4_KILL */ 0 ),
106 : // wait4_KILL:
107 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
108 : // wait4_ALLOW:
109 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
110 0 : };
111 0 : fd_memcpy( out, filter, sizeof( filter ) );
112 0 : }
113 :
114 : #endif /* defined(__linux__) */
115 :
116 : #endif /* HEADER_fd_src_app_shared_commands_run_generated_pidns_seccomp_h */
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