Fix decoding of msg_name* fields of recvmmsg syscall's msghdr array argument

As msg_namelen fields of recvmmsg syscall's struct msghdr array have
the same read-write semantics as struct msghdr argument of recvmsg
syscall, parser of recvmmsg syscall needs a similar fix.

* mmsghdr.c (print_struct_mmsghdr): Increment p_user_msg_namelen field.
(mmsgvec_data): New structure.
(free_mmsgvec_data, save_mmsgvec_namelen): New functions.
(decode_mmsgvec): Take into account the data saved
by save_mmsgvec_namelen function.
(SYS_FUNC(recvmmsg)): Use save_mmsgvec_namelen.
1 file changed
tree: d80c69ffd61ac2f180e6c5c316d40e8ffa628350
  1. debian/
  2. linux/
  3. m4/
  4. maint/
  5. qemu_multiarch_testing/
  6. test/
  7. tests/
  8. xlat/
  9. .gitignore
  10. .mailmap
  11. .travis.yml
  12. access.c
  13. affinity.c
  14. aio.c
  15. alpha.c
  16. AUTHORS
  17. bjm.c
  18. block.c
  19. bootstrap
  20. bpf.c
  21. btrfs.c
  22. build_static_example.sh
  23. cacheflush.c
  24. capability.c
  25. caps0.h
  26. caps1.h
  27. ChangeLog-CVS
  28. chdir.c
  29. chmod.c
  30. clone.c
  31. configure.ac
  32. copy_file_range.c
  33. COPYING
  34. count.c
  35. CREDITS.in
  36. defs.h
  37. desc.c
  38. dirent.c
  39. dirent64.c
  40. empty.h
  41. epoll.c
  42. errnoent.sh
  43. evdev.c
  44. eventfd.c
  45. execve.c
  46. exit.c
  47. fadvise.c
  48. fallocate.c
  49. fanotify.c
  50. fchownat.c
  51. fcntl.c
  52. fetch_seccomp_fprog.c
  53. fetch_struct_flock.c
  54. fetch_struct_mmsghdr.c
  55. fetch_struct_msghdr.c
  56. fetch_struct_statfs.c
  57. file.c
  58. file_handle.c
  59. file_ioctl.c
  60. flock.c
  61. flock.h
  62. fs_x_ioctl.c
  63. fstatfs.c
  64. fstatfs64.c
  65. futex.c
  66. gcc_compat.h
  67. generate_mpers_am.sh
  68. generate_sen.sh
  69. generate_xlat_in.sh
  70. get_robust_list.c
  71. getcpu.c
  72. getcwd.c
  73. getrandom.c
  74. git-set-file-times
  75. git-version-gen
  76. gitlog-to-changelog
  77. HACKING-scripts
  78. hdio.c
  79. hostname.c
  80. inotify.c
  81. INSTALL
  82. io.c
  83. ioctl.c
  84. ioctlsort.c
  85. ioperm.c
  86. iopl.c
  87. ioprio.c
  88. ipc_defs.h
  89. ipc_msg.c
  90. ipc_msgctl.c
  91. ipc_sem.c
  92. ipc_shm.c
  93. ipc_shmctl.c
  94. kcmp.c
  95. kernel_types.h
  96. kexec.c
  97. keyctl.c
  98. ldt.c
  99. link.c
  100. lookup_dcookie.c
  101. loop.c
  102. lseek.c
  103. make-dist
  104. make-dsc
  105. Makefile.am
  106. mem.c
  107. membarrier.c
  108. memfd_create.c
  109. mknod.c
  110. mmsghdr.c
  111. mount.c
  112. mpers.awk
  113. mpers.sh
  114. mpers_test.sh
  115. mpers_type.h
  116. mq.c
  117. msghdr.c
  118. msghdr.h
  119. mtd.c
  120. native_defs.h
  121. net.c
  122. netlink.c
  123. NEWS
  124. numa.c
  125. open.c
  126. or1k_atomic.c
  127. pathtrace.c
  128. perf.c
  129. personality.c
  130. poll.c
  131. prctl.c
  132. print_mq_attr.c
  133. print_msgbuf.c
  134. print_sigevent.c
  135. print_statfs.c
  136. print_time.c
  137. print_timex.c
  138. printmode.c
  139. printrusage.c
  140. printsiginfo.c
  141. printsiginfo.h
  142. printstat.h
  143. process.c
  144. process_vm.c
  145. ptp.c
  146. ptrace.h
  147. quota.c
  148. readahead.c
  149. readlink.c
  150. README
  151. README-hacking
  152. README-linux-ptrace
  153. README-mpers
  154. README.md
  155. reboot.c
  156. regs.h
  157. renameat.c
  158. resource.c
  159. rtc.c
  160. sched.c
  161. scsi.c
  162. seccomp.c
  163. seccomp_fprog.h
  164. sendfile.c
  165. sigaltstack.c
  166. sigevent.h
  167. signal.c
  168. signalent.sh
  169. signalfd.c
  170. sigreturn.c
  171. sock.c
  172. sockaddr.c
  173. socketutils.c
  174. sram_alloc.c
  175. statfs.c
  176. statfs.h
  177. statfs64.c
  178. strace-graph
  179. strace-log-merge
  180. strace.1
  181. strace.c
  182. strace.spec.in
  183. swapon.c
  184. sync_file_range.c
  185. sync_file_range2.c
  186. syscall.c
  187. syscallent.sh
  188. sysctl.c
  189. sysinfo.c
  190. syslog.c
  191. sysmips.c
  192. term.c
  193. time.c
  194. times.c
  195. travis-build.sh
  196. travis-install.sh
  197. travis-success.sh
  198. truncate.c
  199. ubi.c
  200. uid.c
  201. uid16.c
  202. umask.c
  203. umount.c
  204. uname.c
  205. unwind.c
  206. upeek.c
  207. userfaultfd.c
  208. util.c
  209. utime.c
  210. utimes.c
  211. v4l2.c
  212. vsprintf.c
  213. wait.c
  214. xattr.c
  215. xlat.h
  216. xlate.el
  217. 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