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Subject [GitHub] [mesos] asekretenko commented on a change in pull request #381: Fixed NNP isolator test on systems with POSIX-compliant /bin/sh.
Date Sun, 31 Jan 2021 17:35:27 GMT

asekretenko commented on a change in pull request #381:

File path: src/tests/containerizer/linux_nnp_isolator_tests.cpp
@@ -102,18 +102,26 @@ TEST_F(LinuxNNPIsolatorTest, ROOT_CheckNoNewPrivileges)
   // Test that the child process inherits the PR_NO_NEW_PRIVS flag.
-  // Using parameter expansion to parse the process status file
+  // Using convoluted way to parse the process status file
   // due to minimal docker image. The child process should inherit
   // the PR_NO_NEW_PRIVS flag. Parse the process status file and
   // determine if "NoNewPrivs: 1" is found.
   ExecutorInfo executor = createExecutorInfo(
-      #!/bin/bash
-      x=$(cat /proc/self/status);
-      y=${x##*NoNewPrivs:};
-      read -a a <<< $y;
-      if [ ${a[0]} == "1" ]; then exit 0; else exit 1; fi
+      nnp_seen="false"
+      for line in $(cat /proc/self/status); do

Review comment:
       @cf-natali IMO, `line` is a very unfortunate name for this variable; readers can be
mislead into thinking that lines in `/proc/self/status` contain no whitespaces and this script
reads it line by line.
   Something like `word`/`piece`/`segment`/... would be much less confusing.

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