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[tor-commits] [tor/master] doc(hacking): enhance markdown style
commit 0d6c8eed49a9104597a907664675cd4095fb852f
Author: Antoine Veuiller <aveuiller@xxxxxxxxx>
Date: Wed Aug 21 16:22:08 2019 +0200
doc(hacking): enhance markdown style
---
doc/HACKING/CodeStructure.md | 151 +++++++++++++++++++++----------------------
1 file changed, 72 insertions(+), 79 deletions(-)
diff --git a/doc/HACKING/CodeStructure.md b/doc/HACKING/CodeStructure.md
index 736d6cd48..fffafcaed 100644
--- a/doc/HACKING/CodeStructure.md
+++ b/doc/HACKING/CodeStructure.md
@@ -2,128 +2,121 @@
TODO: revise this to talk about how things are, rather than how things
have changed.
-TODO: Make this into good markdown.
-
-
-
-For quite a while now, the program "tor" has been built from source
-code in just two directories: src/common and src/or.
+For quite a while now, the program *tor* has been built from source
+code in just two directories: **src/common** and **src/or**.
This has become more-or-less untenable, for a few reasons -- most
notably of which is that it has led our code to become more
spaghetti-ish than I can endorse with a clean conscience.
So to fix that, we've gone and done a huge code movement in our git
-master branch, which will land in a release once Tor 0.3.5.1-alpha is
+master branch, which will land in a release once Tor `0.3.5.1-alpha` is
out.
Here's what we did:
- * src/common has been turned into a set of static libraries. These
-all live in the "src/lib/*" directories. The dependencies between
+ * **src/common** has been turned into a set of static libraries. These
+all live in the **src/lib/*** directories. The dependencies between
these libraries should have no cycles. The libraries are:
- arch -- Headers to handle architectural differences
- cc -- headers to handle differences among compilers
- compress -- wraps zlib, zstd, lzma
- container -- high-level container types
- crypt_ops -- Cryptographic operations. Planning to split this into
+ - **arch** -- Headers to handle architectural differences
+ - **cc** -- headers to handle differences among compilers
+ - **compress** -- wraps zlib, zstd, lzma
+ - **container** -- high-level container types
+ - **crypt_ops** -- Cryptographic operations. Planning to split this into
a higher and lower level library
- ctime -- Operations that need to run in constant-time. (Properly,
+ - **ctime** -- Operations that need to run in constant-time. (Properly,
data-invariant time)
- defs -- miscelaneous definitions needed throughout Tor.
- encoding -- transforming one data type into another, and various
+ - **defs** -- miscelaneous definitions needed throughout Tor.
+ - **encoding** -- transforming one data type into another, and various
data types into strings.
- err -- lowest-level error handling, in cases where we can't use
+ - **err** -- lowest-level error handling, in cases where we can't use
the logs because something that the logging system needs has broken.
- evloop -- Generic event-loop handling logic
- fdio -- Low-level IO wrapper functions for file descriptors.
- fs -- Operations on the filesystem
- intmath -- low-level integer math and misc bit-twiddling hacks
- lock -- low-level locking code
- log -- Tor's logging module. This library sits roughly halfway up
+ - **evloop** -- Generic event-loop handling logic
+ - **fdio** -- Low-level IO wrapper functions for file descriptors.
+ - **fs** -- Operations on the filesystem
+ - **intmath** -- low-level integer math and misc bit-twiddling hacks
+ - **lock** -- low-level locking code
+ - **log** -- Tor's logging module. This library sits roughly halfway up
the library dependency diagram, since everything it depends on has to
be carefully crafted to *not* log.
- malloc -- Low-level wrappers for the platform memory allocation functions.
- math -- Higher-level mathematical functions, and floating-point math
- memarea -- An arena allocator
- meminfo -- Functions for querying the current process's memory
+ - **malloc** -- Low-level wrappers for the platform memory allocation functions.
+ - **math** -- Higher-level mathematical functions, and floating-point math
+ - **memarea** -- An arena allocator
+ - **meminfo** -- Functions for querying the current process's memory
status and resources
- net -- Networking compatibility and convenience code
- osinfo -- Querying information about the operating system
- process -- Launching and querying the status of other processes
- sandbox -- Backend for the linux seccomp2 sandbox
- smartlist_core -- The lowest-level of the smartlist_t data type.
+ - **net** -- Networking compatibility and convenience code
+ - **osinfo** -- Querying information about the operating system
+ - **process** -- Launching and querying the status of other processes
+ - **sandbox** -- Backend for the linux seccomp2 sandbox
+ - **smartlist_core** -- The lowest-level of the smartlist_t data type.
Separated from the rest of the containers library because the logging
subsystem depends on it.
- string -- Compatibility and convenience functions for manipulating
+ - **string** -- Compatibility and convenience functions for manipulating
C strings.
- term -- Terminal-related functions (currently limited to a getpass
+ - **term** -- Terminal-related functions (currently limited to a getpass
function).
- testsupport -- Macros for mocking, unit tests, etc.
- thread -- Higher-level thread compatibility code
- time -- Higher-level time management code, including format
+ - **testsupport** -- Macros for mocking, unit tests, etc.
+ - **thread** -- Higher-level thread compatibility code
+ - **time** -- Higher-level time management code, including format
conversions and monotonic time
- tls -- Our wrapper around our TLS library
- trace -- Formerly src/trace -- a generic event tracing API
- wallclock -- Low-level time code, used by the log module.
+ - **tls** -- Our wrapper around our TLS library
+ - **trace** -- Formerly src/trace -- a generic event tracing API
+ - **wallclock** -- Low-level time code, used by the log module.
- * To ensure that the dependency graph in src/common remains under
-control, there is a tool that you can run called "make
-check-includes". It verifies that each module in Tor only includes
+ * To ensure that the dependency graph in **src/common** remains under
+control, there is a tool that you can run called `make
+check-includes`. It verifies that each module in Tor only includes
the headers that it is permitted to include, using a per-directory
-".may_include" file.
+*.may_include* file.
- * The src/or/or.h header has been split into numerous smaller
+ * The **src/or/or.h** header has been split into numerous smaller
headers. Notably, many important structures are now declared in a
-header called foo_st.h, where "foo" is the name of the structure.
+header called *foo_st.h*, where "foo" is the name of the structure.
- * The src/or directory, which had most of Tor's code, had been split
+ * The **src/or** directory, which had most of Tor's code, had been split
up into several directories. This is still a work in progress: This
code has not itself been refactored, and its dependency graph is still
a tangled web. I hope we'll be working on that over the coming
releases, but it will take a while to do.
- The new top-level source directories are:
-
- src/core -- Code necessary to actually perform or use onion routing.
- src/feature -- Code used only by some onion routing
+ - The new top-level source directories are:
+ - **src/core** -- Code necessary to actually perform or use onion routing.
+ - **src/feature** -- Code used only by some onion routing
configurations, or only for a special purpose.
- src/app -- Top-level code to run, invoke, and configure the
+ - **src/app** -- Top-level code to run, invoke, and configure the
lower-level code
- The new second-level source directories are:
- src/core/crypto -- High-level cryptographic protocols used in Tor
- src/core/mainloop -- Tor's event loop, connection-handling, and
+ - The new second-level source directories are:
+ - **src/core/crypto** -- High-level cryptographic protocols used in Tor
+ - **src/core/mainloop** -- Tor's event loop, connection-handling, and
traffic-routing code.
- src/core/or -- Parts related to handling onion routing itself
- src/core/proto -- support for encoding and decoding different
+ - **src/core/or** -- Parts related to handling onion routing itself
+ - **src/core/proto** -- support for encoding and decoding different
wire protocols
-
- src/feature/api -- Support for making Tor embeddable
- src/feature/client -- Functionality which only Tor clients need
- src/feature/control -- Controller implementation
- src/feature/dirauth -- Directory authority
- src/feature/dircache -- Directory cache
- src/feature/dirclient -- Directory client
- src/feature/dircommon -- Shared code between the other directory modules
- src/feature/hibernate -- Hibernating when Tor is out of bandwidth
+ - **src/feature/api** -- Support for making Tor embeddable
+ - **src/feature/client** -- Functionality which only Tor clients need
+ - **src/feature/control** -- Controller implementation
+ - **src/feature/dirauth** -- Directory authority
+ - **src/feature/dircache** -- Directory cache
+ - **src/feature/dirclient** -- Directory client
+ - **src/feature/dircommon** -- Shared code between the other directory modules
+ - **src/feature/hibernate** -- Hibernating when Tor is out of bandwidth
or shutting down
- src/feature/hs -- v3 onion service implementation
- src/feature/hs_common -- shared code between both onion service
+ - **src/feature/hs** -- v3 onion service implementation
+ - **src/feature/hs_common** -- shared code between both onion service
implementations
- src/feature/nodelist -- storing and accessing the list of relays on
+ - **src/feature/nodelist** -- storing and accessing the list of relays on
the network.
- src/feature/relay -- code that only relay servers and exit servers need.
- src/feature/rend -- v2 onion service implementation
- src/feature/stats -- statistics and history
-
- src/app/config -- configuration and state for Tor
- src/app/main -- Top-level functions to invoke the rest or Tor.
+ - **src/feature/relay** -- code that only relay servers and exit servers need.
+ - **src/feature/rend** -- v2 onion service implementation
+ - **src/feature/stats** -- statistics and history
+ - **src/app/config** -- configuration and state for Tor
+ - **src/app/main** -- Top-level functions to invoke the rest or Tor.
- * The "tor" executable is now built in src/app/tor rather than src/or/tor.
+ * The `tor` executable is now built in **src/app/tor** rather than **src/or/tor**.
* There are more static libraries than before that you need to build
into your application if you want to embed Tor. Rather than
-maintaining this list yourself, I recommend that you run "make
-show-libs" to have Tor emit a list of what you need to link.
+maintaining this list yourself, I recommend that you run `make
+show-libs` to have Tor emit a list of what you need to link.
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