Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_discof_tower_generated_fd_tower_tile_seccomp_h
3 : #define HEADER_fd_src_discof_tower_generated_fd_tower_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_tower_tile_instr_cnt = 48;
35 :
36 0 : static void populate_sock_filter_policy_fd_tower_tile( ulong out_cnt, struct sock_filter out[ static 48 ], uint logfile_fd, uint checkpt_fd, uint restore_fd, uint accounts_fd ) {
37 0 : FD_TEST( out_cnt >= 48 );
38 0 : struct sock_filter filter[48] = {
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 read */
47 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_read, /* check_read */ 15, 0 ),
48 : /* check fstat */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fstat, /* check_fstat */ 18, 0 ),
50 : /* check fsync */
51 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 21, 0 ),
52 : /* check pwritev2 */
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_pwritev2, /* check_pwritev2 */ 26, 0 ),
54 : /* check preadv2 */
55 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_preadv2, /* check_preadv2 */ 29, 0 ),
56 : /* check fallocate */
57 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fallocate, /* check_fallocate */ 32, 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, 0x00000002U, /* 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, ((uint)(logfile_fd)), /* 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)(checkpt_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_read:
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)(restore_fd)), /* read_ALLOW */ 1, /* read_KILL */ 0 ),
84 : // read_KILL:
85 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
86 : // read_ALLOW:
87 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
88 : // check_fstat:
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)(restore_fd)), /* fstat_ALLOW */ 1, /* fstat_KILL */ 0 ),
92 : // fstat_KILL:
93 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
94 : // fstat_ALLOW:
95 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
96 : // check_fsync:
97 : /* arg 0 low 32 bits */
98 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
99 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(logfile_fd)), /* fsync_ALLOW */ 3, /* or_3 */ 0 ),
100 : // or_3:
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, ((uint)(checkpt_fd)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
104 : // fsync_KILL:
105 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
106 : // fsync_ALLOW:
107 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
108 : // check_pwritev2:
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)(accounts_fd)), /* pwritev2_ALLOW */ 1, /* pwritev2_KILL */ 0 ),
112 : // pwritev2_KILL:
113 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
114 : // pwritev2_ALLOW:
115 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
116 : // check_preadv2:
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)(accounts_fd)), /* preadv2_ALLOW */ 1, /* preadv2_KILL */ 0 ),
120 : // preadv2_KILL:
121 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
122 : // preadv2_ALLOW:
123 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
124 : // check_fallocate:
125 : /* arg 0 low 32 bits */
126 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
127 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(accounts_fd)), /* and_4 */ 0, /* fallocate_KILL */ 2 ),
128 : // and_4:
129 : /* arg 1 low 32 bits */
130 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
131 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* fallocate_ALLOW */ 1, /* fallocate_KILL */ 0 ),
132 : // fallocate_KILL:
133 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
134 : // fallocate_ALLOW:
135 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
136 0 : };
137 0 : fd_memcpy( out, filter, sizeof( filter ) );
138 0 : }
139 :
140 : #endif /* defined(__linux__) */
141 :
142 : #endif /* HEADER_fd_src_discof_tower_generated_fd_tower_tile_seccomp_h */
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