Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / platform / external / strace / b2893c9e9e84e51d6e11ddae7c6908bb707ddbb2
commitb2893c9e9e84e51d6e11ddae7c6908bb707ddbb2[log] [tgz]
authorDmitry V. Levin <ldv@altlinux.org>Mon Mar 30 15:21:55 2015 +0000
committerDmitry V. Levin <ldv@altlinux.org>Tue Mar 31 15:06:01 2015 +0000
treeabfdf902a8b57d7753b80df7e7d1b41e02e41449
parent5647cf86fc511fc365675826ab4ff56775d1206b [diff]
When process_vm_readv fails with EPERM, try PTRACE_PEEKDATA

process_vm_readv() and ptrace(PTRACE_PEEKDATA) have inconsistent access
control rules wrt traced processes: process_vm_readv() is more likely to
fail with EPERM than ptrace(PTRACE_PEEKDATA) when tracing a process that
has execve'd a privileged executable.

* util.c (umoven, umovestr): If process_vm_readv returned EPERM,
fall back to ptrace(PTRACE_PEEKDATA).

Reported-by: Andrew Guertin <lists@dolphinling.net>
1 file changed
tree: abfdf902a8b57d7753b80df7e7d1b41e02e41449
  1. debian/
  2. linux/
  3. m4/
  4. maint/
  5. qemu_multiarch_testing/
  6. test/
  7. tests/
  8. xlat/
  9. .gitignore
  10. .mailmap
  11. access.c
  12. affinity.c
  13. aio.c
  14. AUTHORS
  15. bjm.c
  16. block.c
  17. bootstrap
  18. build_static_example.sh
  19. cacheflush.c
  20. capability.c
  21. caps0.h
  22. caps1.h
  23. ChangeLog-CVS
  24. chdir.c
  25. chmod.c
  26. clone.c
  27. configure.ac
  28. COPYING
  29. count.c
  30. CREDITS.in
  31. defs.h
  32. desc.c
  33. dirent.c
  34. errnoent.sh
  35. evdev.c
  36. execve.c
  37. exit.c
  38. fadvise.c
  39. fallocate.c
  40. fanotify.c
  41. fchownat.c
  42. file.c
  43. futex.c
  44. generate_xlat_in.sh
  45. get_robust_list.c
  46. getcpu.c
  47. getcwd.c
  48. getrandom.c
  49. git-set-file-times
  50. git-version-gen
  51. gitlog-to-changelog
  52. HACKING-scripts
  53. hostname.c
  54. inotify.c
  55. INSTALL
  56. io.c
  57. ioctl.c
  58. ioctlsort.c
  59. ioprio.c
  60. ipc.c
  61. kexec.c
  62. keyctl.c
  63. ldt.c
  64. link.c
  65. loop.c
  66. lseek.c
  67. make-dist
  68. Makefile.am
  69. mem.c
  70. mknod.c
  71. mount.c
  72. mtd.c
  73. net.c
  74. NEWS
  75. open.c
  76. or1k_atomic.c
  77. pathtrace.c
  78. personality.c
  79. prctl.c
  80. printmode.c
  81. printsiginfo.c
  82. printstat.h
  83. process.c
  84. process_vm.c
  85. ptp.c
  86. ptrace.h
  87. quota.c
  88. readahead.c
  89. readlink.c
  90. README
  91. README-hacking
  92. README-linux-ptrace
  93. reboot.c
  94. regs.h
  95. renameat.c
  96. resource.c
  97. sched.c
  98. scsi.c
  99. seccomp.c
  100. sigaltstack.c
  101. signal.c
  102. signalent.sh
  103. sigreturn.c
  104. sock.c
  105. socketutils.c
  106. sram_alloc.c
  107. statfs.c
  108. strace-graph
  109. strace-log-merge
  110. strace.1
  111. strace.c
  112. strace.spec
  113. stream.c
  114. swapon.c
  115. sync_file_range.c
  116. syscall.c
  117. syscallent.sh
  118. sysctl.c
  119. sysinfo.c
  120. syslog.c
  121. sysmips.c
  122. term.c
  123. time.c
  124. truncate.c
  125. uid.c
  126. uid16.c
  127. umask.c
  128. umount.c
  129. uname.c
  130. unwind.c
  131. util.c
  132. utime.c
  133. utimes.c
  134. v4l2.c
  135. vsprintf.c
  136. wait.c
  137. xattr.c
  138. xlate.el