seccomp: fix decoding of sock_fprog and sock_filter structures

Always print struct sock_fprog.len.
Fix printing of unfetchable elements in sock_filter array.
Fix printing of large sock_filter arrays.

* seccomp.c (decode_fprog): Rewrite into decode_seccomp_fprog and
print_seccomp_fprog.
(print_seccomp_filter): Replace decode_fprog with print_seccomp_fprog.
* tests/prctl-seccomp-filter-v.c (main): Update.
* tests/seccomp-filter-v.c: New file.
* tests/seccomp-filter-v.test: New test.
* tests/.gitignore: Add seccomp-filter-v.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add seccomp-filter-v.test.
6 files changed
tree: 72c924aef5be78357c948356dd9c0e67a589f7d8
  1. .gitignore
  2. .mailmap
  3. .travis.yml
  4. AUTHORS
  5. COPYING
  6. CREDITS.in
  7. ChangeLog-CVS
  8. HACKING-scripts
  9. INSTALL
  10. Makefile.am
  11. NEWS
  12. README
  13. README-hacking
  14. README-linux-ptrace
  15. README-mpers
  16. README.md
  17. access.c
  18. affinity.c
  19. aio.c
  20. alpha.c
  21. bjm.c
  22. block.c
  23. bootstrap
  24. bpf.c
  25. build_static_example.sh
  26. cacheflush.c
  27. capability.c
  28. caps0.h
  29. caps1.h
  30. chdir.c
  31. chmod.c
  32. clone.c
  33. configure.ac
  34. copy_file_range.c
  35. count.c
  36. debian/
  37. defs.h
  38. desc.c
  39. dirent.c
  40. dirent64.c
  41. empty.h
  42. epoll.c
  43. errnoent.sh
  44. evdev.c
  45. eventfd.c
  46. execve.c
  47. exit.c
  48. fadvise.c
  49. fallocate.c
  50. fanotify.c
  51. fchownat.c
  52. fcntl.c
  53. fetch_seccomp_fprog.c
  54. fetch_struct_flock.c
  55. file.c
  56. file_handle.c
  57. flock.c
  58. flock.h
  59. futex.c
  60. gcc_compat.h
  61. generate_mpers_am.sh
  62. generate_sen.sh
  63. generate_xlat_in.sh
  64. get_robust_list.c
  65. getcpu.c
  66. getcwd.c
  67. getrandom.c
  68. git-set-file-times
  69. git-version-gen
  70. gitlog-to-changelog
  71. hostname.c
  72. inotify.c
  73. io.c
  74. ioctl.c
  75. ioctlsort.c
  76. ioperm.c
  77. iopl.c
  78. ioprio.c
  79. ipc_defs.h
  80. ipc_msg.c
  81. ipc_msgctl.c
  82. ipc_sem.c
  83. ipc_shm.c
  84. ipc_shmctl.c
  85. kcmp.c
  86. kernel_types.h
  87. kexec.c
  88. keyctl.c
  89. ldt.c
  90. link.c
  91. linux/
  92. lookup_dcookie.c
  93. loop.c
  94. lseek.c
  95. m4/
  96. maint/
  97. make-dist
  98. mem.c
  99. membarrier.c
  100. memfd_create.c
  101. mknod.c
  102. mount.c
  103. mpers.awk
  104. mpers.sh
  105. mpers_test.sh
  106. mpers_type.h
  107. mq.c
  108. mtd.c
  109. native_defs.h
  110. net.c
  111. open.c
  112. or1k_atomic.c
  113. pathtrace.c
  114. perf.c
  115. personality.c
  116. poll.c
  117. prctl.c
  118. print_mq_attr.c
  119. print_msgbuf.c
  120. print_sigevent.c
  121. print_time.c
  122. print_timex.c
  123. printmode.c
  124. printrusage.c
  125. printsiginfo.c
  126. printsiginfo.h
  127. printstat.h
  128. process.c
  129. process_vm.c
  130. ptp.c
  131. ptrace.h
  132. qemu_multiarch_testing/
  133. quota.c
  134. readahead.c
  135. readlink.c
  136. reboot.c
  137. regs.h
  138. renameat.c
  139. resource.c
  140. rtc.c
  141. sched.c
  142. scsi.c
  143. seccomp.c
  144. seccomp_fprog.h
  145. sendfile.c
  146. sigaltstack.c
  147. sigevent.h
  148. signal.c
  149. signalent.sh
  150. signalfd.c
  151. sigreturn.c
  152. sock.c
  153. socketutils.c
  154. sram_alloc.c
  155. statfs.c
  156. strace-graph
  157. strace-log-merge
  158. strace.1
  159. strace.c
  160. strace.spec
  161. swapon.c
  162. sync_file_range.c
  163. syscall.c
  164. syscallent.sh
  165. sysctl.c
  166. sysinfo.c
  167. syslog.c
  168. sysmips.c
  169. term.c
  170. test/
  171. tests/
  172. time.c
  173. times.c
  174. travis-ci.sh
  175. truncate.c
  176. uid.c
  177. uid16.c
  178. umask.c
  179. umount.c
  180. uname.c
  181. unwind.c
  182. upeek.c
  183. userfaultfd.c
  184. util.c
  185. utime.c
  186. utimes.c
  187. v4l2.c
  188. vsprintf.c
  189. wait.c
  190. xattr.c
  191. xlat/
  192. xlate.el
  193. xmalloc.c
README.md

This is strace -- a diagnostic, debugging and instructional userspace utility for Linux. It is used to monitor interactions between processes and the Linux kernel, which include system calls, signal deliveries, and changes of process state. The operation of strace is made possible by the kernel feature known as ptrace.

strace is released under a Berkeley-style license at the request of Paul Kranenburg; see the file COPYING for details.

See the file NEWS for information on what has changed in recent versions.

Please send bug reports and enhancements to the strace mailing list.

Build Status Code Coverage