From 3cdb3abe959f205785f0f4fc7101a48bdbc90485 Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Sun, 8 Jan 2006 18:59:11 +0000 Subject: [PATCH] Add explanatory comments to filesys tests. --- src/tests/filesys/base/child-syn-read.c | 6 ++++++ src/tests/filesys/base/child-syn-wrt.c | 4 ++++ src/tests/filesys/base/lg-create.c | 3 +++ src/tests/filesys/base/lg-full.c | 4 ++++ src/tests/filesys/base/lg-random.c | 4 ++++ src/tests/filesys/base/lg-seq-block.c | 4 ++++ src/tests/filesys/base/lg-seq-random.c | 4 ++++ src/tests/filesys/base/sm-create.c | 3 +++ src/tests/filesys/base/sm-full.c | 4 ++++ src/tests/filesys/base/sm-random.c | 4 ++++ src/tests/filesys/base/sm-seq-block.c | 4 ++++ src/tests/filesys/base/sm-seq-random.c | 4 ++++ src/tests/filesys/base/syn-read.c | 4 ++++ src/tests/filesys/base/syn-remove.c | 3 +++ src/tests/filesys/base/syn-write.c | 4 ++++ src/tests/filesys/extended/child-syn-rw.c | 9 +++++++++ src/tests/filesys/extended/dir-empty-name.c | 3 +++ src/tests/filesys/extended/dir-lsdir.c | 2 ++ src/tests/filesys/extended/dir-mk-tree.c | 3 +++ src/tests/filesys/extended/dir-mk-vine.c | 5 +++++ src/tests/filesys/extended/dir-mkdir.c | 2 ++ src/tests/filesys/extended/dir-open.c | 4 ++++ src/tests/filesys/extended/dir-over-file.c | 3 +++ src/tests/filesys/extended/dir-rm-cwd-cd.c | 7 +++++++ src/tests/filesys/extended/dir-rm-cwd.c | 5 +++++ src/tests/filesys/extended/dir-rm-parent.c | 4 ++++ src/tests/filesys/extended/dir-rm-root.c | 3 +++ src/tests/filesys/extended/dir-rm-tree.c | 3 +++ src/tests/filesys/extended/dir-rm-vine.c | 4 ++++ src/tests/filesys/extended/dir-rmdir.c | 3 +++ src/tests/filesys/extended/dir-under-file.c | 3 +++ src/tests/filesys/extended/grow-create.c | 2 ++ src/tests/filesys/extended/grow-dir-lg.c | 3 +++ src/tests/filesys/extended/grow-file-size.c | 4 ++++ src/tests/filesys/extended/grow-root-lg.c | 2 ++ src/tests/filesys/extended/grow-root-sm.c | 2 ++ src/tests/filesys/extended/grow-seq-lg.c | 3 +++ src/tests/filesys/extended/grow-seq-sm.c | 3 +++ src/tests/filesys/extended/grow-sparse.c | 3 +++ src/tests/filesys/extended/grow-tell.c | 3 +++ src/tests/filesys/extended/grow-too-big.c | 3 +++ src/tests/filesys/extended/grow-two-files.c | 3 +++ src/tests/filesys/extended/mk-tree.c | 2 ++ src/tests/filesys/extended/syn-rw.c | 3 +++ 44 files changed, 158 insertions(+) diff --git a/src/tests/filesys/base/child-syn-read.c b/src/tests/filesys/base/child-syn-read.c index 8f3ccc4..a7801d4 100644 --- a/src/tests/filesys/base/child-syn-read.c +++ b/src/tests/filesys/base/child-syn-read.c @@ -1,3 +1,9 @@ +/* Child process for syn-read test. + Reads the contents of a test file a byte at a time, in the + hope that this will take long enough that we can get a + significant amount of contention in the kernel filesystem + code. */ + #include #include #include diff --git a/src/tests/filesys/base/child-syn-wrt.c b/src/tests/filesys/base/child-syn-wrt.c index 43ca2a3..48f1640 100644 --- a/src/tests/filesys/base/child-syn-wrt.c +++ b/src/tests/filesys/base/child-syn-wrt.c @@ -1,3 +1,7 @@ +/* Child process for syn-read test. + Writes into part of a test file. Other processes will be + writing into other parts at the same time. */ + #include #include #include diff --git a/src/tests/filesys/base/lg-create.c b/src/tests/filesys/base/lg-create.c index e84866e..5c45eee 100644 --- a/src/tests/filesys/base/lg-create.c +++ b/src/tests/filesys/base/lg-create.c @@ -1,2 +1,5 @@ +/* Tests that create properly zeros out the contents of a fairly + large file. */ + #define TEST_SIZE 75678 #include "tests/filesys/create.inc" diff --git a/src/tests/filesys/base/lg-full.c b/src/tests/filesys/base/lg-full.c index 50a7ffa..5f7234d 100644 --- a/src/tests/filesys/base/lg-full.c +++ b/src/tests/filesys/base/lg-full.c @@ -1,2 +1,6 @@ +/* Writes out the contents of a fairly large file all at once, + and then reads it back to make sure that it was written + properly. */ + #define TEST_SIZE 75678 #include "tests/filesys/base/full.inc" diff --git a/src/tests/filesys/base/lg-random.c b/src/tests/filesys/base/lg-random.c index c3027cc..b6f8873 100644 --- a/src/tests/filesys/base/lg-random.c +++ b/src/tests/filesys/base/lg-random.c @@ -1,3 +1,7 @@ +/* Writes out the content of a fairly large file in random order, + then reads it back in random order to verify that it was + written properly. */ + #define BLOCK_SIZE 512 #define TEST_SIZE (512 * 150) #include "tests/filesys/base/random.inc" diff --git a/src/tests/filesys/base/lg-seq-block.c b/src/tests/filesys/base/lg-seq-block.c index 568fbb7..580c30b 100644 --- a/src/tests/filesys/base/lg-seq-block.c +++ b/src/tests/filesys/base/lg-seq-block.c @@ -1,3 +1,7 @@ +/* Writes out a fairly large file sequentially, one fixed-size + block at a time, then reads it back to verify that it was + written properly. */ + #define TEST_SIZE 75678 #define BLOCK_SIZE 513 #include "tests/filesys/base/seq-block.inc" diff --git a/src/tests/filesys/base/lg-seq-random.c b/src/tests/filesys/base/lg-seq-random.c index 2840c7f..fbb6bba 100644 --- a/src/tests/filesys/base/lg-seq-random.c +++ b/src/tests/filesys/base/lg-seq-random.c @@ -1,2 +1,6 @@ +/* Writes out a fairly large file sequentially, one random-sized + block at a time, then reads it back to verify that it was + written properly. */ + #define TEST_SIZE 75678 #include "tests/filesys/base/seq-random.inc" diff --git a/src/tests/filesys/base/sm-create.c b/src/tests/filesys/base/sm-create.c index 522dbd0..6b97ac1 100644 --- a/src/tests/filesys/base/sm-create.c +++ b/src/tests/filesys/base/sm-create.c @@ -1,2 +1,5 @@ +/* Tests that create properly zeros out the contents of a fairly + small file. */ + #define TEST_SIZE 5678 #include "tests/filesys/create.inc" diff --git a/src/tests/filesys/base/sm-full.c b/src/tests/filesys/base/sm-full.c index 10b5703..23ff3d4 100644 --- a/src/tests/filesys/base/sm-full.c +++ b/src/tests/filesys/base/sm-full.c @@ -1,2 +1,6 @@ +/* Writes out the contents of a fairly small file all at once, + and then reads it back to make sure that it was written + properly. */ + #define TEST_SIZE 5678 #include "tests/filesys/base/full.inc" diff --git a/src/tests/filesys/base/sm-random.c b/src/tests/filesys/base/sm-random.c index 3639a16..42d670f 100644 --- a/src/tests/filesys/base/sm-random.c +++ b/src/tests/filesys/base/sm-random.c @@ -1,3 +1,7 @@ +/* Writes out the content of a fairly small file in random order, + then reads it back in random order to verify that it was + written properly. */ + #define BLOCK_SIZE 13 #define TEST_SIZE (13 * 123) #include "tests/filesys/base/random.inc" diff --git a/src/tests/filesys/base/sm-seq-block.c b/src/tests/filesys/base/sm-seq-block.c index 5196eac..e368327 100644 --- a/src/tests/filesys/base/sm-seq-block.c +++ b/src/tests/filesys/base/sm-seq-block.c @@ -1,3 +1,7 @@ +/* Writes out a fairly small file sequentially, one fixed-size + block at a time, then reads it back to verify that it was + written properly. */ + #define TEST_SIZE 5678 #define BLOCK_SIZE 513 #include "tests/filesys/base/seq-block.inc" diff --git a/src/tests/filesys/base/sm-seq-random.c b/src/tests/filesys/base/sm-seq-random.c index 84b6bd3..89e5b71 100644 --- a/src/tests/filesys/base/sm-seq-random.c +++ b/src/tests/filesys/base/sm-seq-random.c @@ -1,2 +1,6 @@ +/* Writes out a fairly large file sequentially, one random-sized + block at a time, then reads it back to verify that it was + written properly. */ + #define TEST_SIZE 5678 #include "tests/filesys/base/seq-random.inc" diff --git a/src/tests/filesys/base/syn-read.c b/src/tests/filesys/base/syn-read.c index 27154db..27db471 100644 --- a/src/tests/filesys/base/syn-read.c +++ b/src/tests/filesys/base/syn-read.c @@ -1,3 +1,7 @@ +/* Spawns 10 child processes, all of which read from the same + file and make sure that the contents are what they should + be. */ + #include #include #include diff --git a/src/tests/filesys/base/syn-remove.c b/src/tests/filesys/base/syn-remove.c index 7f0cb61..7f6cd9f 100644 --- a/src/tests/filesys/base/syn-remove.c +++ b/src/tests/filesys/base/syn-remove.c @@ -1,3 +1,6 @@ +/* Verifies that a deleted file may still be written to and read + from. */ + #include #include #include diff --git a/src/tests/filesys/base/syn-write.c b/src/tests/filesys/base/syn-write.c index 5147a57..19e9d59 100644 --- a/src/tests/filesys/base/syn-write.c +++ b/src/tests/filesys/base/syn-write.c @@ -1,3 +1,7 @@ +/* Spawns several child processes to write out different parts of + the contents of a file and waits for them to finish. Then + reads back the file and verifies its contents. */ + #include #include #include diff --git a/src/tests/filesys/extended/child-syn-rw.c b/src/tests/filesys/extended/child-syn-rw.c index 6334bda..434a542 100644 --- a/src/tests/filesys/extended/child-syn-rw.c +++ b/src/tests/filesys/extended/child-syn-rw.c @@ -1,3 +1,12 @@ +/* Child process for syn-rw. + Reads from a file created by our parent process, which is + growing it. We loop until we've read the whole file + successfully. Many iterations through the loop will return 0 + bytes, because the file has not grown in the meantime. That + is, we are "busy waiting" for the file to grow. + (This test could be improved by adding a "yield" system call + and calling yield whenever we receive a 0-byte read.) */ + #include #include #include diff --git a/src/tests/filesys/extended/dir-empty-name.c b/src/tests/filesys/extended/dir-empty-name.c index d1f5132..43bc5e6 100644 --- a/src/tests/filesys/extended/dir-empty-name.c +++ b/src/tests/filesys/extended/dir-empty-name.c @@ -1,3 +1,6 @@ +/* Tries to create a directory named as the empty string, + which must return failure. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-lsdir.c b/src/tests/filesys/extended/dir-lsdir.c index 1896de3..091fec5 100644 --- a/src/tests/filesys/extended/dir-lsdir.c +++ b/src/tests/filesys/extended/dir-lsdir.c @@ -1,3 +1,5 @@ +/* Just runs lsdir(). */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-mk-tree.c b/src/tests/filesys/extended/dir-mk-tree.c index 2b5907d..a714ff3 100644 --- a/src/tests/filesys/extended/dir-mk-tree.c +++ b/src/tests/filesys/extended/dir-mk-tree.c @@ -1,3 +1,6 @@ +/* Creates directories /0/0/0 through /3/2/2 and creates files in + the leaf directories. */ + #include "tests/filesys/extended/mk-tree.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-mk-vine.c b/src/tests/filesys/extended/dir-mk-vine.c index e873238..7ac18a1 100644 --- a/src/tests/filesys/extended/dir-mk-vine.c +++ b/src/tests/filesys/extended/dir-mk-vine.c @@ -1,3 +1,8 @@ +/* Creates a "vine" of directories /0/1/2/3/4/5/6/7/8/9 + and changes directory into each of them, + then creates a test file in the bottommost + and verifies that it can be opened by absolute name. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-mkdir.c b/src/tests/filesys/extended/dir-mkdir.c index a031ba0..994f41c 100644 --- a/src/tests/filesys/extended/dir-mkdir.c +++ b/src/tests/filesys/extended/dir-mkdir.c @@ -1,3 +1,5 @@ +/* Tests mkdir(). */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-open.c b/src/tests/filesys/extended/dir-open.c index 9bfe2e0..c1f6da5 100644 --- a/src/tests/filesys/extended/dir-open.c +++ b/src/tests/filesys/extended/dir-open.c @@ -1,3 +1,7 @@ +/* Tries to open a directory. + This is allowed to succeed or fail, + but if it succeeds then attempts to write to it must fail. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-over-file.c b/src/tests/filesys/extended/dir-over-file.c index a7866f7..cdd2c62 100644 --- a/src/tests/filesys/extended/dir-over-file.c +++ b/src/tests/filesys/extended/dir-over-file.c @@ -1,3 +1,6 @@ +/* Tries to create a file with the same name as an existing + directory, which must return failure. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-rm-cwd-cd.c b/src/tests/filesys/extended/dir-rm-cwd-cd.c index 7c362ae..c9a6e61 100644 --- a/src/tests/filesys/extended/dir-rm-cwd-cd.c +++ b/src/tests/filesys/extended/dir-rm-cwd-cd.c @@ -1,3 +1,10 @@ +/* Tries to remove the current directory. + This is allowed to succeed or fail. + If it succeeds, then it must not be possible to chdir back to + the current directory by name (because it's been deleted). + If it fails, then it must be possible to chdir back to the + current directory by name (because it still exists). */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-rm-cwd.c b/src/tests/filesys/extended/dir-rm-cwd.c index 3e6fc44..7f81a0b 100644 --- a/src/tests/filesys/extended/dir-rm-cwd.c +++ b/src/tests/filesys/extended/dir-rm-cwd.c @@ -1,3 +1,8 @@ +/* Tries to remove the current directory. + This is allowed to succeed or fail. + Then creates a file in the root to make sure that we haven't + corrupted any directory state. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-rm-parent.c b/src/tests/filesys/extended/dir-rm-parent.c index e18d6fd..9db212a 100644 --- a/src/tests/filesys/extended/dir-rm-parent.c +++ b/src/tests/filesys/extended/dir-rm-parent.c @@ -1,3 +1,7 @@ +/* Tries to remove the change of parents of the current + directory. + This can succeed or fail as long as it doesn't crash. 8/ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-rm-root.c b/src/tests/filesys/extended/dir-rm-root.c index d44b880..5f9cb61 100644 --- a/src/tests/filesys/extended/dir-rm-root.c +++ b/src/tests/filesys/extended/dir-rm-root.c @@ -1,3 +1,6 @@ +/* Try to remove the root directory. + This must return failure. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-rm-tree.c b/src/tests/filesys/extended/dir-rm-tree.c index c4186f9..bab41a6 100644 --- a/src/tests/filesys/extended/dir-rm-tree.c +++ b/src/tests/filesys/extended/dir-rm-tree.c @@ -1,3 +1,6 @@ +/* Creates directories /0/0/0 through /3/2/2 and files in the + leaf directories, then removes them. */ + #include #include #include diff --git a/src/tests/filesys/extended/dir-rm-vine.c b/src/tests/filesys/extended/dir-rm-vine.c index 990bcb4..c424c04 100644 --- a/src/tests/filesys/extended/dir-rm-vine.c +++ b/src/tests/filesys/extended/dir-rm-vine.c @@ -1,3 +1,7 @@ +/* Creates a "vine" of directories /0/1/2/3/4/5/6/7/8/9 + and changes directory into each of them, + then remove them. */ + #include #include #include "tests/lib.h" diff --git a/src/tests/filesys/extended/dir-rmdir.c b/src/tests/filesys/extended/dir-rmdir.c index 38317dc..b3cbc6f 100644 --- a/src/tests/filesys/extended/dir-rmdir.c +++ b/src/tests/filesys/extended/dir-rmdir.c @@ -1,3 +1,6 @@ +/* Creates and removes a directory, then makes sure that it's + really gone. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/dir-under-file.c b/src/tests/filesys/extended/dir-under-file.c index 88a633b..973a8b1 100644 --- a/src/tests/filesys/extended/dir-under-file.c +++ b/src/tests/filesys/extended/dir-under-file.c @@ -1,3 +1,6 @@ +/* Tries to create a directory with the same name as an existing + file, which must return failure. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/grow-create.c b/src/tests/filesys/extended/grow-create.c index 45d8d54..9ccc4ea 100644 --- a/src/tests/filesys/extended/grow-create.c +++ b/src/tests/filesys/extended/grow-create.c @@ -1,2 +1,4 @@ +/* Create a file of size 0. */ + #define TEST_SIZE 0 #include "tests/filesys/create.inc" diff --git a/src/tests/filesys/extended/grow-dir-lg.c b/src/tests/filesys/extended/grow-dir-lg.c index bd05dad..20a194b 100644 --- a/src/tests/filesys/extended/grow-dir-lg.c +++ b/src/tests/filesys/extended/grow-dir-lg.c @@ -1,3 +1,6 @@ +/* Creates a directory, + then creates 50 files in that directory. */ + #define FILE_CNT 50 #define DIRECTORY "/x" #include "tests/filesys/extended/grow-dir.inc" diff --git a/src/tests/filesys/extended/grow-file-size.c b/src/tests/filesys/extended/grow-file-size.c index e7c269f..3ce8588 100644 --- a/src/tests/filesys/extended/grow-file-size.c +++ b/src/tests/filesys/extended/grow-file-size.c @@ -1,3 +1,7 @@ +/* Grows a file from 0 bytes to 2,134 bytes, 37 bytes at a time, + and checks that the file's size is reported correctly at each + step. */ + #include #include "tests/filesys/seq-test.h" #include "tests/lib.h" diff --git a/src/tests/filesys/extended/grow-root-lg.c b/src/tests/filesys/extended/grow-root-lg.c index b4731b2..d8d6c09 100644 --- a/src/tests/filesys/extended/grow-root-lg.c +++ b/src/tests/filesys/extended/grow-root-lg.c @@ -1,2 +1,4 @@ +/* Creates 50 files in the root directory. */ + #define FILE_CNT 50 #include "tests/filesys/extended/grow-dir.inc" diff --git a/src/tests/filesys/extended/grow-root-sm.c b/src/tests/filesys/extended/grow-root-sm.c index db7d1f3..ee375d5 100644 --- a/src/tests/filesys/extended/grow-root-sm.c +++ b/src/tests/filesys/extended/grow-root-sm.c @@ -1,2 +1,4 @@ +/* Creates 20 files in the root directory. */ + #define FILE_CNT 20 #include "tests/filesys/extended/grow-dir.inc" diff --git a/src/tests/filesys/extended/grow-seq-lg.c b/src/tests/filesys/extended/grow-seq-lg.c index 4474d50..3108d17 100644 --- a/src/tests/filesys/extended/grow-seq-lg.c +++ b/src/tests/filesys/extended/grow-seq-lg.c @@ -1,2 +1,5 @@ +/* Grows a file from 0 bytes to 72,943 bytes, 1,234 bytes at a + time. */ + #define TEST_SIZE 72943 #include "tests/filesys/extended/grow-seq.inc" diff --git a/src/tests/filesys/extended/grow-seq-sm.c b/src/tests/filesys/extended/grow-seq-sm.c index bf54c64..3656e2e 100644 --- a/src/tests/filesys/extended/grow-seq-sm.c +++ b/src/tests/filesys/extended/grow-seq-sm.c @@ -1,2 +1,5 @@ +/* Grows a file from 0 bytes to 5,678 bytes, 1,234 bytes at a + time. */ + #define TEST_SIZE 5678 #include "tests/filesys/extended/grow-seq.inc" diff --git a/src/tests/filesys/extended/grow-sparse.c b/src/tests/filesys/extended/grow-sparse.c index 11e3b6e..135a918 100644 --- a/src/tests/filesys/extended/grow-sparse.c +++ b/src/tests/filesys/extended/grow-sparse.c @@ -1,3 +1,6 @@ +/* Tests that seeking past the end of a file and writing will + properly zero out the region in between. */ + #include #include "tests/lib.h" #include "tests/main.h" diff --git a/src/tests/filesys/extended/grow-tell.c b/src/tests/filesys/extended/grow-tell.c index 3f1e211..5f5da5b 100644 --- a/src/tests/filesys/extended/grow-tell.c +++ b/src/tests/filesys/extended/grow-tell.c @@ -1,3 +1,6 @@ +/* Checks that growing a file updates the file position + correctly. */ + #include #include "tests/filesys/seq-test.h" #include "tests/lib.h" diff --git a/src/tests/filesys/extended/grow-too-big.c b/src/tests/filesys/extended/grow-too-big.c index 9d7ddca..d49fcb2 100644 --- a/src/tests/filesys/extended/grow-too-big.c +++ b/src/tests/filesys/extended/grow-too-big.c @@ -1,3 +1,6 @@ +/* Checks that trying to grow a file beyond the capacity of the + file system behaves reasonably (does not crash). */ + #include #include #include "tests/lib.h" diff --git a/src/tests/filesys/extended/grow-two-files.c b/src/tests/filesys/extended/grow-two-files.c index 69f17ae..cc0f5fa 100644 --- a/src/tests/filesys/extended/grow-two-files.c +++ b/src/tests/filesys/extended/grow-two-files.c @@ -1,3 +1,6 @@ +/* Grows two files in parallel and checks that their contents are + correct. */ + #include #include #include "tests/lib.h" diff --git a/src/tests/filesys/extended/mk-tree.c b/src/tests/filesys/extended/mk-tree.c index 66a3ae3..a36bb88 100644 --- a/src/tests/filesys/extended/mk-tree.c +++ b/src/tests/filesys/extended/mk-tree.c @@ -1,3 +1,5 @@ +/* Library function for creating a tree of directories. */ + #include #include #include "tests/filesys/extended/mk-tree.h" diff --git a/src/tests/filesys/extended/syn-rw.c b/src/tests/filesys/extended/syn-rw.c index a4c2f5d..f2900d0 100644 --- a/src/tests/filesys/extended/syn-rw.c +++ b/src/tests/filesys/extended/syn-rw.c @@ -1,3 +1,6 @@ +/* Grows a file in chunks while subprocesses read the growing + file. */ + #include #include #include "tests/filesys/extended/syn-rw.h" -- 2.30.2