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bbac44a6a4
- Unserializing files that were previously kicked out of the open-file cache would cause them to be fopen'd with the original access permissions which is usually 'w' and causes truncation. They are now opened in 'a' mode. (addresses #780) - Add 'max_files_in_cache' script option to manually set the maximum amount of opened files to keep cached. Mainly this just helped to create a simple test case for the above change. - Remove unused NO_HAVE_SETRLIMIT preprocessor switch. - On systems that don't enforce a limit on number of files opened for the process, raise default max size of open-file cache from 32 to 512.
49 lines
1.3 KiB
Text
49 lines
1.3 KiB
Text
# This checks that the interactions between open-file caching and
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# serialization works ok. In the first case, all files can fit
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# in the cache, but get serialized before every write. In the
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# second case, files are eventually forced out of the cache and
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# undergo serialization, which requires re-opening.
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# @TEST-EXEC: bro -b %INPUT "test_file_prefix=one"
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# @TEST-EXEC: btest-diff one0
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# @TEST-EXEC: btest-diff one1
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# @TEST-EXEC: btest-diff one2
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# @TEST-EXEC: bro -b %INPUT "test_file_prefix=two" "max_files_in_cache=2"
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# @TEST-EXEC: btest-diff two0
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# @TEST-EXEC: btest-diff two1
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# @TEST-EXEC: btest-diff two2
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const test_file_prefix = "" &redef;
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global file_table: table[string] of file;
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global iterations: vector of count = vector(0,1,2,3,4,5,6,7,8);
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function write_to_file(c: count)
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{
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local f: file;
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# Take turns writing across three output files.
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local filename = fmt("%s%s", test_file_prefix, c % 3 );
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if ( filename in file_table )
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f = file_table[filename];
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else
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{
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f = open(filename);
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file_table[filename] = f;
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}
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# This when block is a trick to get the frame cloned
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# and thus serialize the local file value
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when ( local s = fmt("write %d", c) )
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print f, s;
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}
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event file_opened(f: file)
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{
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print f, "opened";
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}
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event bro_init()
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{
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for ( i in iterations )
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write_to_file(iterations[i]);
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}
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