mmsg.test: fix regression introduced by commit v4.11-138-g6e815ce

This fixes the test on platforms where both __NR_sendmmsg and
HAVE_SENDMMSG are defined but the former is not implemented by the
kernel and the second is implemented as an indirect syscall.

* tests/mmsg.c (LENGTH_OF): New macro.
(send_mmsg, recv_mmsg): Print expected output in case of ENOSYS.
(main): Redirect stdout to a new descriptor.  Use LENGTH_OF.
Print expected output.
* tests/mmsg.test: Update.
* tests/mmsg.expected: Remove.
* tests/Makefile.am (EXTRA_DIST): Remove mmsg.expected.
4 files changed
tree: 8ee026ef01f1deb919642088f9d00ff94db459ca
  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. build_static_example.sh
  22. cacheflush.c
  23. capability.c
  24. caps0.h
  25. caps1.h
  26. ChangeLog-CVS
  27. chdir.c
  28. chmod.c
  29. clone.c
  30. configure.ac
  31. COPYING
  32. count.c
  33. CREDITS.in
  34. defs.h
  35. desc.c
  36. dirent.c
  37. dirent64.c
  38. empty.h
  39. epoll.c
  40. errnoent.sh
  41. evdev.c
  42. eventfd.c
  43. execve.c
  44. exit.c
  45. fadvise.c
  46. fallocate.c
  47. fanotify.c
  48. fchownat.c
  49. fcntl.c
  50. fetch_seccomp_fprog.c
  51. fetch_struct_flock.c
  52. file.c
  53. file_handle.c
  54. flock.c
  55. flock.h
  56. futex.c
  57. gcc_compat.h
  58. generate_mpers_am.sh
  59. generate_sen.sh
  60. generate_xlat_in.sh
  61. get_robust_list.c
  62. getcpu.c
  63. getcwd.c
  64. getrandom.c
  65. git-set-file-times
  66. git-version-gen
  67. gitlog-to-changelog
  68. HACKING-scripts
  69. hostname.c
  70. inotify.c
  71. INSTALL
  72. io.c
  73. ioctl.c
  74. ioctlsort.c
  75. ioperm.c
  76. iopl.c
  77. ioprio.c
  78. ipc_defs.h
  79. ipc_msg.c
  80. ipc_msgctl.c
  81. ipc_sem.c
  82. ipc_shm.c
  83. ipc_shmctl.c
  84. kcmp.c
  85. kernel_types.h
  86. kexec.c
  87. keyctl.c
  88. ldt.c
  89. link.c
  90. lookup_dcookie.c
  91. loop.c
  92. lseek.c
  93. make-dist
  94. Makefile.am
  95. mem.c
  96. membarrier.c
  97. memfd_create.c
  98. mknod.c
  99. mount.c
  100. mpers.awk
  101. mpers.sh
  102. mpers_test.sh
  103. mpers_type.h
  104. mq.c
  105. mtd.c
  106. native_defs.h
  107. net.c
  108. NEWS
  109. open.c
  110. or1k_atomic.c
  111. pathtrace.c
  112. perf.c
  113. personality.c
  114. poll.c
  115. prctl.c
  116. print_mq_attr.c
  117. print_msgbuf.c
  118. print_sigevent.c
  119. print_time.c
  120. print_timex.c
  121. printmode.c
  122. printrusage.c
  123. printsiginfo.c
  124. printsiginfo.h
  125. printstat.h
  126. process.c
  127. process_vm.c
  128. ptp.c
  129. ptrace.h
  130. quota.c
  131. readahead.c
  132. readlink.c
  133. README
  134. README-hacking
  135. README-linux-ptrace
  136. README-mpers
  137. reboot.c
  138. regs.h
  139. renameat.c
  140. resource.c
  141. rtc.c
  142. sched.c
  143. scsi.c
  144. seccomp.c
  145. seccomp_fprog.h
  146. sendfile.c
  147. sigaltstack.c
  148. sigevent.h
  149. signal.c
  150. signalent.sh
  151. signalfd.c
  152. sigreturn.c
  153. sock.c
  154. socketutils.c
  155. sram_alloc.c
  156. statfs.c
  157. strace-graph
  158. strace-log-merge
  159. strace.1
  160. strace.c
  161. strace.spec
  162. swapon.c
  163. sync_file_range.c
  164. syscall.c
  165. syscallent.sh
  166. sysctl.c
  167. sysinfo.c
  168. syslog.c
  169. sysmips.c
  170. term.c
  171. time.c
  172. times.c
  173. travis-ci.sh
  174. truncate.c
  175. uid.c
  176. uid16.c
  177. umask.c
  178. umount.c
  179. uname.c
  180. unwind.c
  181. userfaultfd.c
  182. util.c
  183. utime.c
  184. utimes.c
  185. v4l2.c
  186. vsprintf.c
  187. wait.c
  188. xattr.c
  189. xlate.el
  190. xmalloc.c