Line data    Source code

       1             : /* THIS FILE WAS GENERATED BY generate_filters.py. DO NOT EDIT BY HAND! */
       2             : #ifndef HEADER_fd_src_disco_verify_generated_fd_verify_tile_seccomp_h
       3             : #define HEADER_fd_src_disco_verify_generated_fd_verify_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             : #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_fd_verify_tile_instr_cnt = 25;
      37             : 
      38           0 : static void populate_sock_filter_policy_fd_verify_tile( ulong out_cnt, struct sock_filter out[ static 25 ], uint logfile_fd ) {
      39           0 :   FD_TEST( out_cnt >= 25 );
      40           0 :   struct sock_filter filter[25] = {
      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 */ 5 ),
      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 */ 5, 0 ),
      48             :     /* check fsync */
      49           0 :     BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_fsync, /* check_fsync */ 10, 0 ),
      50             :     /* check futex */
      51           0 :     BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_futex, /* check_futex */ 13, 0 ),
      52             :     /* allow restart_syscall */
      53           0 :     BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, SYS_restart_syscall, /* RET_ALLOW */ 1, 0 ),
      54             : //  RET_KILL_PROCESS:
      55             :     /* default deny */
      56           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
      57             : //  RET_ALLOW:
      58             :     /* allow */
      59           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
      60             : //  check_write:
      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, 0x00000002U, /* write_ALLOW */ 3, /* or_1 */ 0 ),
      64             : //  or_1:
      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, ((uint)(logfile_fd)), /* write_ALLOW */ 1, /* write_KILL */ 0 ),
      68             : //  write_KILL:
      69           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
      70             : //  write_ALLOW:
      71           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
      72             : //  check_fsync:
      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)), /* fsync_ALLOW */ 1, /* fsync_KILL */ 0 ),
      76             : //  fsync_KILL:
      77           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
      78             : //  fsync_ALLOW:
      79           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_ALLOW ),
      80             : //  check_futex:
      81             :     /* arg 1 low 32 bits */
      82           0 :     BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(1)),
      83           0 :     BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, FD_SECCOMP_ARG_LO(FUTEX_WAIT_BITSET), /* and_2 */ 0, /* futex_KILL */ 2 ),
      84             : //  and_2:
      85             :     /* arg 2 low 32 bits */
      86           0 :     BPF_STMT( BPF_LD | BPF_W | BPF_ABS, FD_SECCOMP_ARG_LO_OFFSET(2)),
      87           0 :     BPF_JUMP( BPF_JMP | BPF_JEQ | BPF_K, 0x00000000U, /* futex_ALLOW */ 1, /* futex_KILL */ 0 ),
      88             : //  futex_KILL:
      89           0 :     BPF_STMT( BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS ),
      90             : //  futex_ALLOW:
      91           0 :     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_verify_generated_fd_verify_tile_seccomp_h */