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1 | 2f668be7 | Eduardo Otubo | /*
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2 | 2f668be7 | Eduardo Otubo | * QEMU seccomp mode 2 support with libseccomp
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3 | 2f668be7 | Eduardo Otubo | *
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4 | 2f668be7 | Eduardo Otubo | * Copyright IBM, Corp. 2012
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5 | 2f668be7 | Eduardo Otubo | *
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6 | 2f668be7 | Eduardo Otubo | * Authors:
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7 | 2f668be7 | Eduardo Otubo | * Eduardo Otubo <eotubo@br.ibm.com>
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8 | 2f668be7 | Eduardo Otubo | *
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9 | 2f668be7 | Eduardo Otubo | * This work is licensed under the terms of the GNU GPL, version 2. See
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10 | 2f668be7 | Eduardo Otubo | * the COPYING file in the top-level directory.
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11 | 2f668be7 | Eduardo Otubo | *
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12 | 2f668be7 | Eduardo Otubo | * Contributions after 2012-01-13 are licensed under the terms of the
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13 | 2f668be7 | Eduardo Otubo | * GNU GPL, version 2 or (at your option) any later version.
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14 | 2f668be7 | Eduardo Otubo | */
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15 | 2f668be7 | Eduardo Otubo | #include <stdio.h> |
16 | 2f668be7 | Eduardo Otubo | #include <seccomp.h> |
17 | 9c17d615 | Paolo Bonzini | #include "sysemu/seccomp.h" |
18 | 2f668be7 | Eduardo Otubo | |
19 | 2f668be7 | Eduardo Otubo | struct QemuSeccompSyscall {
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20 | 2f668be7 | Eduardo Otubo | int32_t num; |
21 | 2f668be7 | Eduardo Otubo | uint8_t priority; |
22 | 2f668be7 | Eduardo Otubo | }; |
23 | 2f668be7 | Eduardo Otubo | |
24 | 2f668be7 | Eduardo Otubo | static const struct QemuSeccompSyscall seccomp_whitelist[] = { |
25 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(timer_settime), 255 },
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26 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(timer_gettime), 254 },
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27 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(futex), 253 },
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28 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(select), 252 },
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29 | fe512d65 | Eduardo Otubo | #if defined(__x86_64__)
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30 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(recvfrom), 251 },
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31 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(sendto), 250 },
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32 | fe512d65 | Eduardo Otubo | #elif defined(__i386__)
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33 | fe512d65 | Eduardo Otubo | { SCMP_SYS(socketcall), 250 },
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34 | fe512d65 | Eduardo Otubo | #endif
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35 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(read), 249 },
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36 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(brk), 248 },
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37 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(clone), 247 },
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38 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(mmap), 247 },
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39 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(mprotect), 246 },
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40 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(execve), 245 },
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41 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(open), 245 },
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42 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(ioctl), 245 },
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43 | fe512d65 | Eduardo Otubo | #if defined(__x86_64__)
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44 | fe512d65 | Eduardo Otubo | { SCMP_SYS(socket), 245 },
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45 | fe512d65 | Eduardo Otubo | { SCMP_SYS(setsockopt), 245 },
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46 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(recvmsg), 245 },
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47 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(sendmsg), 245 },
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48 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(accept), 245 },
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49 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(connect), 245 },
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50 | fe512d65 | Eduardo Otubo | { SCMP_SYS(socketpair), 245 },
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51 | fe512d65 | Eduardo Otubo | { SCMP_SYS(bind), 245 },
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52 | fe512d65 | Eduardo Otubo | { SCMP_SYS(listen), 245 },
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53 | fe512d65 | Eduardo Otubo | { SCMP_SYS(semget), 245 },
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54 | fe512d65 | Eduardo Otubo | #elif defined(__i386__)
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55 | fe512d65 | Eduardo Otubo | { SCMP_SYS(ipc), 245 },
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56 | fe512d65 | Eduardo Otubo | #endif
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57 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(gettimeofday), 245 },
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58 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(readlink), 245 },
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59 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(access), 245 },
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60 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(prctl), 245 },
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61 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(signalfd), 245 },
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62 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getrlimit), 245 },
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63 | fe512d65 | Eduardo Otubo | { SCMP_SYS(set_tid_address), 245 },
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64 | fe512d65 | Eduardo Otubo | { SCMP_SYS(statfs), 245 },
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65 | fe512d65 | Eduardo Otubo | { SCMP_SYS(unlink), 245 },
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66 | fe512d65 | Eduardo Otubo | { SCMP_SYS(wait4), 245 },
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67 | 2f668be7 | Eduardo Otubo | #if defined(__i386__)
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68 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(fcntl64), 245 },
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69 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(fstat64), 245 },
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70 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(stat64), 245 },
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71 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getgid32), 245 },
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72 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getegid32), 245 },
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73 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getuid32), 245 },
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74 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(geteuid32), 245 },
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75 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(sigreturn), 245 },
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76 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(_newselect), 245 },
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77 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(_llseek), 245 },
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78 | fe512d65 | Eduardo Otubo | { SCMP_SYS(mmap2), 245 },
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79 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(sigprocmask), 245 },
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80 | 2f668be7 | Eduardo Otubo | #endif
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81 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_getparam), 245 },
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82 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_getscheduler), 245 },
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83 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fstat), 245 },
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84 | fe512d65 | Eduardo Otubo | { SCMP_SYS(clock_getres), 245 },
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85 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_get_priority_min), 245 },
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86 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_get_priority_max), 245 },
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87 | fe512d65 | Eduardo Otubo | { SCMP_SYS(stat), 245 },
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88 | fe512d65 | Eduardo Otubo | { SCMP_SYS(uname), 245 },
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89 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(eventfd2), 245 },
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90 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(dup), 245 },
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91 | fe512d65 | Eduardo Otubo | { SCMP_SYS(dup2), 245 },
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92 | fe512d65 | Eduardo Otubo | { SCMP_SYS(dup3), 245 },
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93 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(gettid), 245 },
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94 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getgid), 245 },
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95 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getegid), 245 },
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96 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getuid), 245 },
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97 | fe512d65 | Eduardo Otubo | { SCMP_SYS(geteuid), 245 },
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98 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(timer_create), 245 },
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99 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(exit), 245 },
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100 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(clock_gettime), 245 },
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101 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(time), 245 },
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102 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(restart_syscall), 245 },
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103 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(pwrite64), 245 },
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104 | fe512d65 | Eduardo Otubo | { SCMP_SYS(nanosleep), 245 },
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105 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(chown), 245 },
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106 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(openat), 245 },
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107 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getdents), 245 },
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108 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(timer_delete), 245 },
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109 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(exit_group), 245 },
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110 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(rt_sigreturn), 245 },
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111 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(sync), 245 },
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112 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(pread64), 245 },
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113 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(madvise), 245 },
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114 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(set_robust_list), 245 },
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115 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(lseek), 245 },
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116 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(pselect6), 245 },
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117 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(fork), 245 },
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118 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(eventfd), 245 },
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119 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(rt_sigprocmask), 245 },
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120 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(write), 244 },
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121 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(fcntl), 243 },
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122 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(tgkill), 242 },
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123 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(rt_sigaction), 242 },
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124 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(pipe2), 242 },
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125 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(munmap), 242 },
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126 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(mremap), 242 },
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127 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fdatasync), 242 },
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128 | fe512d65 | Eduardo Otubo | { SCMP_SYS(close), 242 },
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129 | fe512d65 | Eduardo Otubo | { SCMP_SYS(rt_sigpending), 242 },
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130 | fe512d65 | Eduardo Otubo | { SCMP_SYS(rt_sigtimedwait), 242 },
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131 | fe512d65 | Eduardo Otubo | { SCMP_SYS(readv), 242 },
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132 | fe512d65 | Eduardo Otubo | { SCMP_SYS(writev), 242 },
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133 | fe512d65 | Eduardo Otubo | { SCMP_SYS(preadv), 242 },
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134 | fe512d65 | Eduardo Otubo | { SCMP_SYS(pwritev), 242 },
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135 | fe512d65 | Eduardo Otubo | { SCMP_SYS(setrlimit), 242 },
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136 | fe512d65 | Eduardo Otubo | { SCMP_SYS(ftruncate), 242 },
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137 | fe512d65 | Eduardo Otubo | { SCMP_SYS(lstat), 242 },
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138 | fe512d65 | Eduardo Otubo | { SCMP_SYS(pipe), 242 },
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139 | fe512d65 | Eduardo Otubo | { SCMP_SYS(umask), 242 },
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140 | fe512d65 | Eduardo Otubo | { SCMP_SYS(chdir), 242 },
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141 | fe512d65 | Eduardo Otubo | { SCMP_SYS(setitimer), 242 },
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142 | fe512d65 | Eduardo Otubo | { SCMP_SYS(setsid), 242 },
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143 | fe512d65 | Eduardo Otubo | { SCMP_SYS(poll), 242 },
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144 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_create), 242 },
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145 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_ctl), 242 },
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146 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_wait), 242 },
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147 | fe512d65 | Eduardo Otubo | #if defined(__i386__)
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148 | fe512d65 | Eduardo Otubo | { SCMP_SYS(waitpid), 242 },
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149 | fe512d65 | Eduardo Otubo | #elif defined(__x86_64__)
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150 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getsockname), 242 },
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151 | 2f668be7 | Eduardo Otubo | { SCMP_SYS(getpeername), 242 },
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152 | fe512d65 | Eduardo Otubo | { SCMP_SYS(accept4), 242 },
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153 | fe512d65 | Eduardo Otubo | { SCMP_SYS(newfstatat), 241 },
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154 | fe512d65 | Eduardo Otubo | { SCMP_SYS(shutdown), 241 },
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155 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getsockopt), 241 },
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156 | fe512d65 | Eduardo Otubo | { SCMP_SYS(semctl), 241 },
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157 | fe512d65 | Eduardo Otubo | { SCMP_SYS(semop), 241 },
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158 | fe512d65 | Eduardo Otubo | { SCMP_SYS(semtimedop), 241 },
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159 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_ctl_old), 241 },
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160 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_wait_old), 241 },
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161 | fe512d65 | Eduardo Otubo | #endif
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162 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_pwait), 241 },
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163 | fe512d65 | Eduardo Otubo | { SCMP_SYS(epoll_create1), 241 },
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164 | fe512d65 | Eduardo Otubo | { SCMP_SYS(ppoll), 241 },
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165 | fe512d65 | Eduardo Otubo | { SCMP_SYS(creat), 241 },
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166 | fe512d65 | Eduardo Otubo | { SCMP_SYS(link), 241 },
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167 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getpid), 241 },
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168 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getppid), 241 },
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169 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getpgrp), 241 },
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170 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getpgid), 241 },
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171 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getsid), 241 },
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172 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getdents64), 241 },
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173 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getresuid), 241 },
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174 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getresgid), 241 },
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175 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getgroups), 241 },
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176 | fe512d65 | Eduardo Otubo | #if defined(__i386__)
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177 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getresuid32), 241 },
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178 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getresgid32), 241 },
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179 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getgroups32), 241 },
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180 | fe512d65 | Eduardo Otubo | { SCMP_SYS(signal), 241 },
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181 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sigaction), 241 },
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182 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sigsuspend), 241 },
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183 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sigpending), 241 },
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184 | fe512d65 | Eduardo Otubo | { SCMP_SYS(truncate64), 241 },
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185 | fe512d65 | Eduardo Otubo | { SCMP_SYS(ftruncate64), 241 },
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186 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fchown32), 241 },
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187 | fe512d65 | Eduardo Otubo | { SCMP_SYS(chown32), 241 },
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188 | fe512d65 | Eduardo Otubo | { SCMP_SYS(lchown32), 241 },
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189 | fe512d65 | Eduardo Otubo | { SCMP_SYS(statfs64), 241 },
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190 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fstatfs64), 241 },
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191 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fstatat64), 241 },
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192 | fe512d65 | Eduardo Otubo | { SCMP_SYS(lstat64), 241 },
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193 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sendfile64), 241 },
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194 | fe512d65 | Eduardo Otubo | { SCMP_SYS(ugetrlimit), 241 },
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195 | fe512d65 | Eduardo Otubo | #endif
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196 | fe512d65 | Eduardo Otubo | { SCMP_SYS(alarm), 241 },
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197 | fe512d65 | Eduardo Otubo | { SCMP_SYS(rt_sigsuspend), 241 },
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198 | fe512d65 | Eduardo Otubo | { SCMP_SYS(rt_sigqueueinfo), 241 },
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199 | fe512d65 | Eduardo Otubo | { SCMP_SYS(rt_tgsigqueueinfo), 241 },
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200 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sigaltstack), 241 },
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201 | fe512d65 | Eduardo Otubo | { SCMP_SYS(signalfd4), 241 },
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202 | fe512d65 | Eduardo Otubo | { SCMP_SYS(truncate), 241 },
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203 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fchown), 241 },
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204 | fe512d65 | Eduardo Otubo | { SCMP_SYS(lchown), 241 },
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205 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fchownat), 241 },
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206 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fstatfs), 241 },
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207 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sendfile), 241 },
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208 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getitimer), 241 },
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209 | fe512d65 | Eduardo Otubo | { SCMP_SYS(syncfs), 241 },
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210 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fsync), 241 },
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211 | fe512d65 | Eduardo Otubo | { SCMP_SYS(fchdir), 241 },
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212 | fe512d65 | Eduardo Otubo | { SCMP_SYS(flock), 241 },
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213 | fe512d65 | Eduardo Otubo | { SCMP_SYS(msync), 241 },
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214 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_setparam), 241 },
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215 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_setscheduler), 241 },
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216 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_yield), 241 },
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217 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_rr_get_interval), 241 },
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218 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_setaffinity), 241 },
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219 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sched_getaffinity), 241 },
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220 | fe512d65 | Eduardo Otubo | { SCMP_SYS(readahead), 241 },
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221 | fe512d65 | Eduardo Otubo | { SCMP_SYS(timer_getoverrun), 241 },
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222 | fe512d65 | Eduardo Otubo | { SCMP_SYS(unlinkat), 241 },
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223 | fe512d65 | Eduardo Otubo | { SCMP_SYS(readlinkat), 241 },
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224 | fe512d65 | Eduardo Otubo | { SCMP_SYS(faccessat), 241 },
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225 | fe512d65 | Eduardo Otubo | { SCMP_SYS(get_robust_list), 241 },
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226 | fe512d65 | Eduardo Otubo | { SCMP_SYS(splice), 241 },
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227 | fe512d65 | Eduardo Otubo | { SCMP_SYS(vmsplice), 241 },
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228 | fe512d65 | Eduardo Otubo | { SCMP_SYS(getcpu), 241 },
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229 | fe512d65 | Eduardo Otubo | { SCMP_SYS(sendmmsg), 241 },
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230 | fe512d65 | Eduardo Otubo | { SCMP_SYS(recvmmsg), 241 },
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231 | fe512d65 | Eduardo Otubo | { SCMP_SYS(prlimit64), 241 },
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232 | fe512d65 | Eduardo Otubo | { SCMP_SYS(waitid), 241 }
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233 | 2f668be7 | Eduardo Otubo | }; |
234 | 2f668be7 | Eduardo Otubo | |
235 | 2f668be7 | Eduardo Otubo | int seccomp_start(void) |
236 | 2f668be7 | Eduardo Otubo | { |
237 | 2f668be7 | Eduardo Otubo | int rc = 0; |
238 | 2f668be7 | Eduardo Otubo | unsigned int i = 0; |
239 | 2f668be7 | Eduardo Otubo | scmp_filter_ctx ctx; |
240 | 2f668be7 | Eduardo Otubo | |
241 | 2f668be7 | Eduardo Otubo | ctx = seccomp_init(SCMP_ACT_KILL); |
242 | 2f668be7 | Eduardo Otubo | if (ctx == NULL) { |
243 | 2f668be7 | Eduardo Otubo | goto seccomp_return;
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244 | 2f668be7 | Eduardo Otubo | } |
245 | 2f668be7 | Eduardo Otubo | |
246 | 2f668be7 | Eduardo Otubo | for (i = 0; i < ARRAY_SIZE(seccomp_whitelist); i++) { |
247 | 2f668be7 | Eduardo Otubo | rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, seccomp_whitelist[i].num, 0);
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248 | 2f668be7 | Eduardo Otubo | if (rc < 0) { |
249 | 2f668be7 | Eduardo Otubo | goto seccomp_return;
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250 | 2f668be7 | Eduardo Otubo | } |
251 | 2f668be7 | Eduardo Otubo | rc = seccomp_syscall_priority(ctx, seccomp_whitelist[i].num, |
252 | 2f668be7 | Eduardo Otubo | seccomp_whitelist[i].priority); |
253 | 2f668be7 | Eduardo Otubo | if (rc < 0) { |
254 | 2f668be7 | Eduardo Otubo | goto seccomp_return;
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255 | 2f668be7 | Eduardo Otubo | } |
256 | 2f668be7 | Eduardo Otubo | } |
257 | 2f668be7 | Eduardo Otubo | |
258 | 2f668be7 | Eduardo Otubo | rc = seccomp_load(ctx); |
259 | 2f668be7 | Eduardo Otubo | |
260 | 2f668be7 | Eduardo Otubo | seccomp_return:
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261 | 2f668be7 | Eduardo Otubo | seccomp_release(ctx); |
262 | 2f668be7 | Eduardo Otubo | return rc;
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263 | 2f668be7 | Eduardo Otubo | } |