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_monitor_generated_monitor_seccomp_h
3 : #define HEADER_fd_src_app_shared_commands_monitor_generated_monitor_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_monitor_instr_cnt = 38;
35 :
36 0 : static void populate_sock_filter_policy_monitor( ulong out_cnt, struct sock_filter out[ static 38 ], uint logfile_fd, uint drain_output_fd ) {
37 0 : FD_TEST( out_cnt >= 38 );
38 0 : struct sock_filter filter[38] = {
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 */ 8 ),
42 : /* load syscall number */
43 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, nr ) )),
44 : /* check write */
45 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_write, /* check_write */ 8, 0 ),
46 : /* check fsync */
47 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 15, 0 ),
48 : /* allow nanosleep */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_nanosleep, /* RET_ALLOW */ 5, 0 ),
50 : /* allow sched_yield */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_sched_yield, /* RET_ALLOW */ 4, 0 ),
52 : /* allow exit_group */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_exit_group, /* RET_ALLOW */ 3, 0 ),
54 : /* check read */
55 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_read, /* check_read */ 15, 0 ),
56 : /* check ioctl */
57 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_ioctl, /* check_ioctl */ 20, 0 ),
58 : // RET_KILL_PROCESS:
59 : /* default deny */
60 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
61 : // RET_ALLOW:
62 : /* allow */
63 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
64 : // check_write:
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_JEQ | BPF_K, 0x00000001U, /* write_ALLOW */ 5, /* or_1 */ 0 ),
68 : // or_1:
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_2 */ 0 ),
72 : // or_2:
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_read:
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)(drain_output_fd)), /* read_ALLOW */ 3, /* or_3 */ 0 ),
92 : // or_3:
93 : /* arg 0 low 32 bits */
94 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
95 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* read_ALLOW */ 1, /* read_KILL */ 0 ),
96 : // read_KILL:
97 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
98 : // read_ALLOW:
99 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
100 : // check_ioctl:
101 : /* arg 0 low 32 bits */
102 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
103 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* and_4 */ 0, /* ioctl_KILL */ 4 ),
104 : // and_4:
105 : /* arg 1 low 32 bits */
106 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
107 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(TCGETS), /* ioctl_ALLOW */ 3, /* or_5 */ 0 ),
108 : // or_5:
109 : /* arg 1 low 32 bits */
110 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
111 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(TCSETS), /* ioctl_ALLOW */ 1, /* ioctl_KILL */ 0 ),
112 : // ioctl_KILL:
113 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
114 : // ioctl_ALLOW:
115 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
116 0 : };
117 0 : fd_memcpy( out, filter, sizeof( filter ) );
118 0 : }
119 :
120 : #endif /* defined(__linux__) */
121 :
122 : #endif /* HEADER_fd_src_app_shared_commands_monitor_generated_monitor_seccomp_h */
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