Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_disco_waker_generated_fd_waker_tile_seccomp_h
3 : #define HEADER_fd_src_disco_waker_generated_fd_waker_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_waker_tile_instr_cnt = 26;
35 :
36 0 : static void populate_sock_filter_policy_fd_waker_tile( ulong out_cnt, struct sock_filter out[ static 26 ], uint logfile_fd, uint waker_outer_fd ) {
37 0 : FD_TEST( out_cnt >= 26 );
38 0 : struct sock_filter filter[26] = {
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 */ 4 ),
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 */ 4, 0 ),
46 : /* check fsync */
47 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 9, 0 ),
48 : /* check epoll_pwait */
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_epoll_pwait, /* check_epoll_pwait */ 12, 0 ),
50 : // RET_KILL_PROCESS:
51 : /* default deny */
52 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
53 : // RET_ALLOW:
54 : /* allow */
55 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
56 : // check_write:
57 : /* arg 0 low 32 bits */
58 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
59 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000002U, /* write_ALLOW */ 3, /* or_1 */ 0 ),
60 : // or_1:
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_JEQ | BPF_K, ((uint)(logfile_fd)), /* write_ALLOW */ 1, /* write_KILL */ 0 ),
64 : // write_KILL:
65 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
66 : // write_ALLOW:
67 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
68 : // check_fsync:
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)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
72 : // fsync_KILL:
73 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
74 : // fsync_ALLOW:
75 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
76 : // check_epoll_pwait:
77 : /* arg 0 low 32 bits */
78 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(0)),
79 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ((uint)(waker_outer_fd)), /* and_2 */ 0, /* epoll_pwait_KILL */ 4 ),
80 : // and_2:
81 : /* arg 4 high 32 bits */
82 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_HI_OFFSET(4)),
83 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* arg_hi_eq_3 */ 0, /* epoll_pwait_KILL */ 2 ),
84 : // arg_hi_eq_3:
85 : /* arg 4 low 32 bits */
86 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(4)),
87 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* epoll_pwait_ALLOW */ 1, /* epoll_pwait_KILL */ 0 ),
88 : // epoll_pwait_KILL:
89 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
90 : // epoll_pwait_ALLOW:
91 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
92 0 : };
93 0 : fd_memcpy( out, filter, sizeof( filter ) );
94 0 : }
95 :
96 : #endif /* defined(__linux__) */
97 :
98 : #endif /* HEADER_fd_src_disco_waker_generated_fd_waker_tile_seccomp_h */
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