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Posted by ardje on Thu 19th Aug 16:43
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  1. test1:/extra# strace -fF rm test160m  
  2. execve("/bin/rm", ["rm", "test160m"], [/* 16 vars */]) = 0  
  3. brk(0)                                  = 0x60f000  
  4. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffd1d241000  
  5. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  6. mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffd1d23f000  
  7. access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)  
  8. open("/etc/ld.so.cache", O_RDONLY)      = 3  
  9. fstat(3, {st_mode=S_IFREG|0644, st_size=7665, ...}) = 0  
  10. mmap(NULL, 7665, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffd1d23d000  
  11. close(3)                                = 0  
  12. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  13. open("/lib/libc.so.6", O_RDONLY)        = 3  
  14. read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\342\1\0\0\0\0\0@"..., 832) = 832  
  15. fstat(3, {st_mode=S_IFREG|0755, st_size=1375536, ...}) = 0  
  16. mmap(NULL, 3482232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7ffd1ccd4000  
  17. mprotect(0x7ffd1ce1e000, 2093056, PROT_NONE) = 0  
  18. mmap(0x7ffd1d01d000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x149000) = 0x7ffd1d01d000  
  19. mmap(0x7ffd1d022000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7ffd1d022000  
  20. close(3)                                = 0  
  21. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffd1d23c000  
  22. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffd1d23b000  
  23. arch_prctl(ARCH_SET_FS, 0x7ffd1d23b6e0) = 0  
  24. mprotect(0x7ffd1d01d000, 12288, PROT_READ) = 0  
  25. munmap(0x7ffd1d23d000, 7665)            = 0  
  26. brk(0)                                  = 0x60f000  
  27. brk(0x630000)                           = 0x630000  
  28. open("/usr/lib/locale/locale-archive", O_RDONLY) = 3  
  29. fstat(3, {st_mode=S_IFREG|0644, st_size=1810000, ...}) = 0  
  30. mmap(NULL, 1810000, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffd1d081000  
  31. close(3)                                = 0  
  32. ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0  
  33. geteuid()                               = 0  
  34. unlinkat(AT_FDCWD, "test160m", 0)       = 0  
  35. close(0)                                = 0  
  36. close(1)                                = 0  
  37. close(2)                                = 0  
  38. exit_group(0)                           = ?  
  39.  
  40.  
  41.  
  42.  
  43. Meanwhile:  
  44. test1:~# strace -fF sleep 50 < /extra/test160m  
  45. execve("/bin/sleep", ["sleep", "50"], [/* 15 vars */]) = 0  
  46. brk(0)                                  = 0x609000  
  47. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8b3783000  
  48. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  49. mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8b3781000  
  50. access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)  
  51. open("/etc/ld.so.cache", O_RDONLY)      = 3  
  52. fstat(3, {st_mode=S_IFREG|0644, st_size=7665, ...}) = 0  
  53. mmap(NULL, 7665, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc8b377f000  
  54. close(3)                                = 0  
  55. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  56. open("/lib/librt.so.1", O_RDONLY)       = 3  
  57. read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@#\0\0\0\0\0\0@"..., 832) = 832  
  58. fstat(3, {st_mode=S_IFREG|0644, st_size=35784, ...}) = 0  
  59. mmap(NULL, 2132968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8b3360000  
  60. mprotect(0x7fc8b3368000, 2093056, PROT_NONE) = 0  
  61. mmap(0x7fc8b3567000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7fc8b3567000  
  62. close(3)                                = 0  
  63. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  64. open("/lib/libc.so.6", O_RDONLY)        = 3  
  65. read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\342\1\0\0\0\0\0@"..., 832) = 832  
  66. fstat(3, {st_mode=S_IFREG|0755, st_size=1375536, ...}) = 0  
  67. mmap(NULL, 3482232, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8b300d000  
  68. mprotect(0x7fc8b3157000, 2093056, PROT_NONE) = 0  
  69. mmap(0x7fc8b3356000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x149000) = 0x7fc8b3356000  
  70. mmap(0x7fc8b335b000, 17016, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc8b335b000  
  71. close(3)                                = 0  
  72. access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)  
  73. open("/lib/libpthread.so.0", O_RDONLY)  = 3  
  74. read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320W\0\0\0\0\0\0@"..., 832) = 832  
  75. fstat(3, {st_mode=S_IFREG|0755, st_size=130114, ...}) = 0  
  76. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8b377e000  
  77. mmap(NULL, 2208624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8b2df1000  
  78. mprotect(0x7fc8b2e07000, 2097152, PROT_NONE) = 0  
  79. mmap(0x7fc8b3007000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7fc8b3007000  
  80. mmap(0x7fc8b3009000, 13168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc8b3009000  
  81. close(3)                                = 0  
  82. mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8b377d000  
  83. arch_prctl(ARCH_SET_FS, 0x7fc8b377d6e0) = 0  
  84. mprotect(0x7fc8b3356000, 12288, PROT_READ) = 0  
  85. munmap(0x7fc8b377f000, 7665)            = 0  
  86. set_tid_address(0x7fc8b377d770)         = 8028  
  87. set_robust_list(0x7fc8b377d780, 0x18)   = 0  
  88. futex(0x7fff93831d7c, FUTEX_WAKE_PRIVATE, 1) = 0  
  89. rt_sigaction(SIGRTMIN, {0x7fc8b2df6660, [], SA_RESTORER|SA_SIGINFO, 0x7fc8b2dffa80}, NULL, 8) = 0  
  90. rt_sigaction(SIGRT_1, {0x7fc8b2df66f0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7fc8b2dffa80}, NULL, 8) = 0  
  91. rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0  
  92. getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0  
  93. brk(0)                                  = 0x609000  
  94. brk(0x62a000)                           = 0x62a000  
  95. open("/usr/lib/locale/locale-archive", O_RDONLY) = 3  
  96. fstat(3, {st_mode=S_IFREG|0644, st_size=1810000, ...}) = 0  
  97. mmap(NULL, 1810000, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc8b35c3000  
  98. close(3)                                = 0  
  99. nanosleep({50, 0}, NULL)                = 0  
  100. close(1)                                = 0  
  101. close(2)                                = 0  
  102. exit_group(0)                           = ? 

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