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  1. #!/bin/sh
  2.  
  3. cat </dev/fd/0 >/dev/null
  4.  
  5. echo "hey"
  6.  
  7. exit 0
  8.  
  9.  
  10.  
  11. 21565: mmap(0x0,32768,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366316544 (0x800646000)
  12. 21565: issetugid() = 0 (0x0)
  13. 21565: lstat("/etc",{ mode=drwxr-xr-x ,inode=80257,size=2560,blksize=32768 }) = 0 (0x0)
  14. 21565: lstat("/etc/libmap.conf",{ mode=-rw-r--r-- ,inode=80341,size=109,blksize=32768 }) = 0 (0x0)
  15. 21565: openat(AT_FDCWD,"/etc/libmap.conf",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
  16. 21565: fstat(3,{ mode=-rw-r--r-- ,inode=80341,size=109,blksize=32768 }) = 0 (0x0)
  17. 21565: mmap(0x0,109,PROT_READ,MAP_PRIVATE,3,0x0) = 34366349312 (0x80064e000)
  18. 21565: close(3) = 0 (0x0)
  19. 21565: lstat("/usr",{ mode=drwxr-xr-x ,inode=2,size=1024,blksize=32768 }) = 0 (0x0)
  20. 21565: lstat("/usr/local",{ mode=drwxr-xr-x ,inode=19020672,size=512,blksize=32768 }) = 0 (0x0)
  21. 21565: lstat("/usr/local/etc",{ mode=drwxr-xr-x ,inode=19020679,size=1024,blksize=32768 }) = 0 (0x0)
  22. 21565: lstat("/usr/local/etc/libmap.d",0x7fffffffc648) ERR#2 'No such file or directory'
  23. 21565: munmap(0x80064e000,109) = 0 (0x0)
  24. 21565: openat(AT_FDCWD,"/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
  25. 21565: read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M^O\0\0\0\0\0\0\0\M^N\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0",128) = 128 (0x80)
  26. 21565: fstat(3,{ mode=-r--r--r-- ,inode=321027,size=271,blksize=32768 }) = 0 (0x0)
  27. 21565: lseek(3,0x80,SEEK_SET) = 128 (0x80)
  28. 21565: read(3,"/lib:/usr/lib:/usr/lib/compat:/usr/local/lib:/usr/local/lib/gcc48:/usr/local/lib/gcc6:/usr/local/lib/mysql:/usr/local/lib/perl5/5.26/mach/CORE\0",143) = 143 (0x8f)
  29. 21565: close(3) = 0 (0x0)
  30. 21565: access("/lib/libedit.so.7",F_OK) = 0 (0x0)
  31. 21565: openat(AT_FDCWD,"/lib/libedit.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
  32. 21565: fstat(3,{ mode=-r--r--r-- ,inode=561846,size=222616,blksize=32768 }) = 0 (0x0)
  33. 21565: mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366349312 (0x80064e000)
  34. 21565: mmap(0x0,2330624,PROT_NONE,MAP_GUARD,-1,0x0) = 34368417792 (0x800847000)
  35. 21565: mmap(0x800847000,212992,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 34368417792 (0x800847000)
  36. 21565: mmap(0x800a7a000,12288,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x33000) = 34370723840 (0x800a7a000)
  37. 21565: mmap(0x800a7d000,12288,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 34370736128 (0x800a7d000)
  38. 21565: munmap(0x80064e000,4096) = 0 (0x0)
  39. 21565: close(3) = 0 (0x0)
  40. 21565: access("/lib/libc.so.7",F_OK) = 0 (0x0)
  41. 21565: openat(AT_FDCWD,"/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
  42. 21565: fstat(3,{ mode=-r--r--r-- ,inode=561833,size=1779544,blksize=32768 }) = 0 (0x0)
  43. 21565: mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366349312 (0x80064e000)
  44. 21565: mmap(0x0,3915776,PROT_NONE,MAP_GUARD,-1,0x0) = 34370748416 (0x800a80000)
  45. 21565: mmap(0x800a80000,1667072,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 34370748416 (0x800a80000)
  46. 21565: mmap(0x800e16000,53248,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x196000) = 34374508544 (0x800e16000)
  47. 21565: mmap(0x800e23000,102400,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 34374561792 (0x800e23000)
  48. 21565: munmap(0x80064e000,4096) = 0 (0x0)
  49. 21565: close(3) = 0 (0x0)
  50. 21565: access("/lib/libncursesw.so.8",F_OK) = 0 (0x0)
  51. 21565: openat(AT_FDCWD,"/lib/libncursesw.so.8",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
  52. 21565: fstat(3,{ mode=-r--r--r-- ,inode=561859,size=384504,blksize=32768 }) = 0 (0x0)
  53. 21565: mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366349312 (0x80064e000)
  54. 21565: mmap(0x0,2486272,PROT_NONE,MAP_GUARD,-1,0x0) = 34374664192 (0x800e3c000)
  55. 21565: mmap(0x800e3c000,368640,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 34374664192 (0x800e3c000)
  56. 21565: mmap(0x801095000,20480,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x59000) = 34377125888 (0x801095000)
  57. 21565: mmap(0x80109a000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 34377146368 (0x80109a000)
  58. 21565: munmap(0x80064e000,4096) = 0 (0x0)
  59. 21565: close(3) = 0 (0x0)
  60. 21565: munmap(0x80064d000,4096) = 0 (0x0)
  61. 21565: mmap(0x0,40960,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366345216 (0x80064d000)
  62. 21565: munmap(0x800650000,28672) = 0 (0x0)
  63. 21565: mmap(0x0,102400,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366357504 (0x800650000)
  64. 21565: sysarch(AMD64_SET_FSBASE,0x7fffffffe000) = 0 (0x0)
  65. 21565: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  66. 21565: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  67. 21565: readlink("/etc/malloc.conf",0x7fffffffd700,1024) ERR#2 'No such file or directory'
  68. 21565: issetugid() = 0 (0x0)
  69. 21565: __sysctl(0x7fffffffd5a0,0x2,0x7fffffffd5f0,0x7fffffffd5e8,0x800be668b,0xd) = 0 (0x0)
  70. 21565: __sysctl(0x7fffffffd5f0,0x2,0x7fffffffd6b4,0x7fffffffd6a8,0x0,0x0) = 0 (0x0)
  71. 21565: mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34377150464 (0x80109b000)
  72. 21565: munmap(0x80109b000,2097152) = 0 (0x0)
  73. 21565: mmap(0x0,4190208,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34377150464 (0x80109b000)
  74. 21565: munmap(0x80109b000,1462272) = 0 (0x0)
  75. 21565: munmap(0x801400000,630784) = 0 (0x0)
  76. 21565: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  77. 21565: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  78. 21565: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  79. 21565: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  80. 21565: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  81. 21565: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  82. 21565: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  83. 21565: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  84. 21565: getpid() = 21565 (0x543d)
  85. 21565: geteuid() = 0 (0x0)
  86. 21565: getppid() = 21564 (0x543c)
  87. 21565: mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34380709888 (0x801400000)
  88. 21565: getuid() = 0 (0x0)
  89. 21565: geteuid() = 0 (0x0)
  90. 21565: getgid() = 0 (0x0)
  91. 21565: getegid() = 0 (0x0)
  92. 21565: openat(AT_FDCWD,"./prepend",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
  93. 21565: fcntl(3,F_DUPFD_CLOEXEC,0xa) = 10 (0xa)
  94. 21565: close(3) = 0 (0x0)
  95. 21565: sigaction(SIGINT,0x0,{ SIG_DFL SA_RESTART ss_t }) = 0 (0x0)
  96. 21565: sigaction(SIGINT,{ 0x41bae0 0x0 ss_t },0x0) = 0 (0x0)
  97. 21565: sigaction(SIGQUIT,0x0,{ SIG_DFL SA_RESTART ss_t }) = 0 (0x0)
  98. 21565: sigaction(SIGQUIT,{ 0x41bae0 0x0 ss_t },0x0) = 0 (0x0)
  99. 21565: sigaction(SIGTERM,0x0,{ SIG_DFL 0x0 ss_t }) = 0 (0x0)
  100. 21565: sigaction(SIGTERM,{ SIG_DFL 0x0 ss_t },0x0) = 0 (0x0)
  101. 21565: stat(".",{ mode=drwxr-xr-x ,inode=19672372,size=512,blksize=32768 }) = 0 (0x0)
  102. 21565: stat("/usr/local/gtech/sieve",{ mode=drwxr-xr-x ,inode=19672372,size=512,blksize=32768 }) = 0 (0x0)
  103. 21565: read(10,"#!/bin/sh\n\ncat </dev/fd/0 >/dev/null\n\necho "hey"\n\nexit 0\n",1024) = 57 (0x39)
  104. 21565: stat("/sbin/cat",0x7fffffffe738) ERR#2 'No such file or directory'
  105. 21565: stat("/bin/cat",{ mode=-r-xr-xr-x ,inode=240771,size=13400,blksize=32768 }) = 0 (0x0)
  106. 21566: <new process>
  107. 21565: fork() = 21566 (0x543e)
  108. 21566: close(10) = 0 (0x0)
  109. 21566: openat(AT_FDCWD,"/dev/fd/0",O_RDONLY,00) = 3 (0x3)
  110. 21566: dup2(3,0) = 0 (0x0)
  111. 21566: close(3) = 0 (0x0)
  112. 21566: openat(AT_FDCWD,"/dev/null",O_WRONLY|O_CREAT|O_TRUNC,0666) = 3 (0x3)
  113. 21566: dup2(3,1) = 1 (0x1)
  114. 21566: close(3) = 0 (0x0)
  115. 21566: execve("/bin/cat",0x8014180f8,0x801418208) = 0 (0x0)
  116. 21566: mmap(0x0,32768,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366169088 (0x800622000)
  117. 21566: issetugid() = 0 (0x0)
  118. 21566: lstat("/etc",{ mode=drwxr-xr-x ,inode=80257,size=2560,blksize=32768 }) = 0 (0x0)
  119. 21566: lstat("/etc/libmap.conf",{ mode=-rw-r--r-- ,inode=80341,size=109,blksize=32768 }) = 0 (0x0)
  120. 21566: openat(AT_FDCWD,"/etc/libmap.conf",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
  121. 21566: fstat(3,{ mode=-rw-r--r-- ,inode=80341,size=109,blksize=32768 }) = 0 (0x0)
  122. 21566: mmap(0x0,109,PROT_READ,MAP_PRIVATE,3,0x0) = 34366201856 (0x80062a000)
  123. 21566: close(3) = 0 (0x0)
  124. 21566: lstat("/usr",{ mode=drwxr-xr-x ,inode=2,size=1024,blksize=32768 }) = 0 (0x0)
  125. 21566: lstat("/usr/local",{ mode=drwxr-xr-x ,inode=19020672,size=512,blksize=32768 }) = 0 (0x0)
  126. 21566: lstat("/usr/local/etc",{ mode=drwxr-xr-x ,inode=19020679,size=1024,blksize=32768 }) = 0 (0x0)
  127. 21566: lstat("/usr/local/etc/libmap.d",0x7fffffffc658) ERR#2 'No such file or directory'
  128. 21566: munmap(0x80062a000,109) = 0 (0x0)
  129. 21566: openat(AT_FDCWD,"/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
  130. 21566: read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M^O\0\0\0\0\0\0\0\M^N\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0",128) = 128 (0x80)
  131. 21566: fstat(3,{ mode=-r--r--r-- ,inode=321027,size=271,blksize=32768 }) = 0 (0x0)
  132. 21566: lseek(3,0x80,SEEK_SET) = 128 (0x80)
  133. 21566: read(3,"/lib:/usr/lib:/usr/lib/compat:/usr/local/lib:/usr/local/lib/gcc48:/usr/local/lib/gcc6:/usr/local/lib/mysql:/usr/local/lib/perl5/5.26/mach/CORE\0",143) = 143 (0x8f)
  134. 21566: close(3) = 0 (0x0)
  135. 21566: access("/lib/libc.so.7",F_OK) = 0 (0x0)
  136. 21566: openat(AT_FDCWD,"/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
  137. 21566: fstat(3,{ mode=-r--r--r-- ,inode=561833,size=1779544,blksize=32768 }) = 0 (0x0)
  138. 21566: mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366201856 (0x80062a000)
  139. 21566: mmap(0x0,3915776,PROT_NONE,MAP_GUARD,-1,0x0) = 34368270336 (0x800823000)
  140. 21566: mmap(0x800823000,1667072,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0) = 34368270336 (0x800823000)
  141. 21566: mmap(0x800bb9000,53248,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x196000) = 34372030464 (0x800bb9000)
  142. 21566: mmap(0x800bc6000,102400,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 34372083712 (0x800bc6000)
  143. 21566: munmap(0x80062a000,4096) = 0 (0x0)
  144. 21566: close(3) = 0 (0x0)
  145. 21566: munmap(0x800629000,4096) = 0 (0x0)
  146. 21566: mmap(0x0,102400,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366197760 (0x800629000)
  147. 21566: sysarch(AMD64_SET_FSBASE,0x7fffffffe010) = 0 (0x0)
  148. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  149. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  150. 21566: readlink("/etc/malloc.conf",0x7fffffffd710,1024) ERR#2 'No such file or directory'
  151. 21566: issetugid() = 0 (0x0)
  152. 21566: __sysctl(0x7fffffffd5b0,0x2,0x7fffffffd600,0x7fffffffd5f8,0x80098968b,0xd) = 0 (0x0)
  153. 21566: __sysctl(0x7fffffffd600,0x2,0x7fffffffd6c4,0x7fffffffd6b8,0x0,0x0) = 0 (0x0)
  154. 21566: mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34372186112 (0x800bdf000)
  155. 21566: munmap(0x800bdf000,2097152) = 0 (0x0)
  156. 21566: mmap(0x0,4190208,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34372186112 (0x800bdf000)
  157. 21566: munmap(0x800bdf000,135168) = 0 (0x0)
  158. 21566: munmap(0x800e00000,1957888) = 0 (0x0)
  159. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  160. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  161. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  162. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  163. 21566: fstat(1,{ mode=crw-rw-rw- ,inode=27,size=0,blksize=4096 }) = 0 (0x0)
  164. 21566: __sysctl(0x7fffffffe5c0,0x2,0x7fffffffe5ac,0x7fffffffe5b0,0x0,0x0) = 0 (0x0)
  165. 21566: __sysctl(0x7fffffffe5c0,0x2,0x7fffffffe5ac,0x7fffffffe5b0,0x0,0x0) = 0 (0x0)
  166. 21566: mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34374418432 (0x800e00000)
  167. 21566: read(0,"hey\n",4096) = 4 (0x4)
  168. 21566: write(1,"hey\n",4) = 4 (0x4)
  169. 21566: read(0,0x800e16000,4096) = 0 (0x0)
  170. 21566: close(1) = 0 (0x0)
  171. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  172. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  173. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  174. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  175. 21566: sigprocmask(SIG_BLOCK,{ SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2 },{ }) = 0 (0x0)
  176. 21566: sigprocmask(SIG_SETMASK,{ },0x0) = 0 (0x0)
  177. 21566: exit(0x0)
  178. 21566: process exit, rval = 0
  179. 21565: wait4(-1,{ EXITED,val=0 },0x0,0x0) = 21566 (0x543e)
  180. hey
  181. 21565: write(1,"hey\n",4) = 4 (0x4)
  182. 21565: exit(0x0)
  183. 21565: process exit, rval = 0
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