Line data Source code
1 : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
2 : #ifndef HEADER_fd_src_discof_repair_generated_fd_repair_tile_seccomp_h
3 : #define HEADER_fd_src_discof_repair_generated_fd_repair_tile_seccomp_h
4 :
5 : #include "../../../../src/util/fd_util_base.h"
6 : #include <linux/audit.h>
7 : #include <linux/capability.h>
8 : #include <linux/filter.h>
9 : #include <linux/seccomp.h>
10 : #include <linux/bpf.h>
11 : #include <sys/syscall.h>
12 : #include <signal.h>
13 : #include <stddef.h>
14 :
15 : #if defined(__i386__)
16 : # define ARCH_NR AUDIT_ARCH_I386
17 : #elif defined(__x86_64__)
18 : # define ARCH_NR AUDIT_ARCH_X86_64
19 : #elif defined(__aarch64__)
20 : # define ARCH_NR AUDIT_ARCH_AARCH64
21 : #else
22 : # error "Target architecture is unsupported by seccomp."
23 : #endif
24 : static const unsigned int sock_filter_policy_fd_repair_tile_instr_cnt = 27;
25 :
26 0 : static void populate_sock_filter_policy_fd_repair_tile( ulong out_cnt, struct sock_filter * out, unsigned int logfile_fd, unsigned int good_peer_cache_file_fd) {
27 0 : FD_TEST( out_cnt >= 27 );
28 0 : struct sock_filter filter[27] = {
29 : /* Check: Jump to RET_KILL_PROCESS if the script's arch != the runtime arch */
30 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, arch ) ) ),
31 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, ARCH_NR, 0, /* RET_KILL_PROCESS */ 23 ),
32 : /* loading syscall number in accumulator */
33 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, ( offsetof( struct seccomp_data, nr ) ) ),
34 : /* allow write based on expression */
35 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_write, /* check_write */ 5, 0 ),
36 : /* allow lseek based on expression */
37 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_lseek, /* check_lseek */ 10, 0 ),
38 : /* allow ftruncate based on expression */
39 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_ftruncate, /* check_ftruncate */ 11, 0 ),
40 : /* allow fsync based on expression */
41 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 14, 0 ),
42 : /* allow read based on expression */
43 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_read, /* check_read */ 15, 0 ),
44 : /* none of the syscalls matched */
45 0 : { BPF_JMP | BPF_JA, 0, 0, /* RET_KILL_PROCESS */ 16 },
46 : // check_write:
47 : /* load syscall argument 0 in accumulator */
48 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
49 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 2, /* RET_ALLOW */ 15, /* lbl_1 */ 0 ),
50 : // lbl_1:
51 : /* load syscall argument 0 in accumulator */
52 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
53 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, logfile_fd, /* RET_ALLOW */ 13, /* lbl_2 */ 0 ),
54 : // lbl_2:
55 : /* load syscall argument 0 in accumulator */
56 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
57 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, good_peer_cache_file_fd, /* RET_ALLOW */ 11, /* RET_KILL_PROCESS */ 10 ),
58 : // check_lseek:
59 : /* load syscall argument 0 in accumulator */
60 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
61 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, good_peer_cache_file_fd, /* RET_ALLOW */ 9, /* RET_KILL_PROCESS */ 8 ),
62 : // check_ftruncate:
63 : /* load syscall argument 0 in accumulator */
64 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
65 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, good_peer_cache_file_fd, /* lbl_3 */ 0, /* RET_KILL_PROCESS */ 6 ),
66 : // lbl_3:
67 : /* load syscall argument 1 in accumulator */
68 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[1])),
69 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0, /* RET_ALLOW */ 5, /* RET_KILL_PROCESS */ 4 ),
70 : // check_fsync:
71 : /* load syscall argument 0 in accumulator */
72 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
73 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, logfile_fd, /* RET_ALLOW */ 3, /* RET_KILL_PROCESS */ 2 ),
74 : // check_read:
75 : /* load syscall argument 0 in accumulator */
76 0 : BPF_STMT( BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, args[0])),
77 0 : BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, good_peer_cache_file_fd, /* RET_ALLOW */ 1, /* RET_KILL_PROCESS */ 0 ),
78 : // RET_KILL_PROCESS:
79 : /* KILL_PROCESS is placed before ALLOW since it's the fallthrough case. */
80 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
81 : // RET_ALLOW:
82 : /* ALLOW has to be reached by jumping */
83 0 : BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
84 0 : };
85 0 : fd_memcpy( out, filter, sizeof( filter ) );
86 0 : }
87 :
88 : #endif
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