mirror of
https://github.com/torvalds/linux.git
synced 2024-11-21 19:41:42 +00:00
docs: sphinxify coccinelle.txt and add it to dev-tools
No textual changes have been made, but the formatting has obviously been tweaked. Cc: Michal Marek <mmarek@suse.com> Cc: Gilles Muller <Gilles.Muller@lip6.fr> Acked-by: Nicolas Palix <nicolas.palix@imag.fr> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet
parent
059c5e918f
commit
4b9033a334
@ -1,10 +1,18 @@
|
||||
Copyright 2010 Nicolas Palix <npalix@diku.dk>
|
||||
Copyright 2010 Julia Lawall <julia@diku.dk>
|
||||
Copyright 2010 Gilles Muller <Gilles.Muller@lip6.fr>
|
||||
.. Copyright 2010 Nicolas Palix <npalix@diku.dk>
|
||||
.. Copyright 2010 Julia Lawall <julia@diku.dk>
|
||||
.. Copyright 2010 Gilles Muller <Gilles.Muller@lip6.fr>
|
||||
|
||||
.. highlight:: none
|
||||
|
||||
Getting Coccinelle
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
Coccinelle
|
||||
==========
|
||||
|
||||
Coccinelle is a tool for pattern matching and text transformation that has
|
||||
many uses in kernel development, including the application of complex,
|
||||
tree-wide patches and detection of problematic programming patterns.
|
||||
|
||||
Getting Coccinelle
|
||||
-------------------
|
||||
|
||||
The semantic patches included in the kernel use features and options
|
||||
which are provided by Coccinelle version 1.0.0-rc11 and above.
|
||||
@ -22,24 +30,23 @@ of many distributions, e.g. :
|
||||
- NetBSD
|
||||
- FreeBSD
|
||||
|
||||
|
||||
You can get the latest version released from the Coccinelle homepage at
|
||||
http://coccinelle.lip6.fr/
|
||||
|
||||
Information and tips about Coccinelle are also provided on the wiki
|
||||
pages at http://cocci.ekstranet.diku.dk/wiki/doku.php
|
||||
|
||||
Once you have it, run the following command:
|
||||
Once you have it, run the following command::
|
||||
|
||||
./configure
|
||||
make
|
||||
|
||||
as a regular user, and install it with
|
||||
as a regular user, and install it with::
|
||||
|
||||
sudo make install
|
||||
|
||||
Supplemental documentation
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Supplemental documentation
|
||||
---------------------------
|
||||
|
||||
For supplemental documentation refer to the wiki:
|
||||
|
||||
@ -47,49 +54,52 @@ https://bottest.wiki.kernel.org/coccicheck
|
||||
|
||||
The wiki documentation always refers to the linux-next version of the script.
|
||||
|
||||
Using Coccinelle on the Linux kernel
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Using Coccinelle on the Linux kernel
|
||||
------------------------------------
|
||||
|
||||
A Coccinelle-specific target is defined in the top level
|
||||
Makefile. This target is named 'coccicheck' and calls the 'coccicheck'
|
||||
front-end in the 'scripts' directory.
|
||||
Makefile. This target is named ``coccicheck`` and calls the ``coccicheck``
|
||||
front-end in the ``scripts`` directory.
|
||||
|
||||
Four basic modes are defined: patch, report, context, and org. The mode to
|
||||
use is specified by setting the MODE variable with 'MODE=<mode>'.
|
||||
Four basic modes are defined: ``patch``, ``report``, ``context``, and
|
||||
``org``. The mode to use is specified by setting the MODE variable with
|
||||
``MODE=<mode>``.
|
||||
|
||||
'patch' proposes a fix, when possible.
|
||||
- ``patch`` proposes a fix, when possible.
|
||||
|
||||
'report' generates a list in the following format:
|
||||
- ``report`` generates a list in the following format:
|
||||
file:line:column-column: message
|
||||
|
||||
'context' highlights lines of interest and their context in a
|
||||
diff-like style.Lines of interest are indicated with '-'.
|
||||
- ``context`` highlights lines of interest and their context in a
|
||||
diff-like style.Lines of interest are indicated with ``-``.
|
||||
|
||||
'org' generates a report in the Org mode format of Emacs.
|
||||
- ``org`` generates a report in the Org mode format of Emacs.
|
||||
|
||||
Note that not all semantic patches implement all modes. For easy use
|
||||
of Coccinelle, the default mode is "report".
|
||||
|
||||
Two other modes provide some common combinations of these modes.
|
||||
|
||||
'chain' tries the previous modes in the order above until one succeeds.
|
||||
- ``chain`` tries the previous modes in the order above until one succeeds.
|
||||
|
||||
'rep+ctxt' runs successively the report mode and the context mode.
|
||||
It should be used with the C option (described later)
|
||||
which checks the code on a file basis.
|
||||
- ``rep+ctxt`` runs successively the report mode and the context mode.
|
||||
It should be used with the C option (described later)
|
||||
which checks the code on a file basis.
|
||||
|
||||
Examples:
|
||||
To make a report for every semantic patch, run the following command:
|
||||
Examples
|
||||
~~~~~~~~
|
||||
|
||||
To make a report for every semantic patch, run the following command::
|
||||
|
||||
make coccicheck MODE=report
|
||||
|
||||
To produce patches, run:
|
||||
To produce patches, run::
|
||||
|
||||
make coccicheck MODE=patch
|
||||
|
||||
|
||||
The coccicheck target applies every semantic patch available in the
|
||||
sub-directories of 'scripts/coccinelle' to the entire Linux kernel.
|
||||
sub-directories of ``scripts/coccinelle`` to the entire Linux kernel.
|
||||
|
||||
For each semantic patch, a commit message is proposed. It gives a
|
||||
description of the problem being checked by the semantic patch, and
|
||||
@ -99,15 +109,15 @@ As any static code analyzer, Coccinelle produces false
|
||||
positives. Thus, reports must be carefully checked, and patches
|
||||
reviewed.
|
||||
|
||||
To enable verbose messages set the V= variable, for example:
|
||||
To enable verbose messages set the V= variable, for example::
|
||||
|
||||
make coccicheck MODE=report V=1
|
||||
|
||||
Coccinelle parallelization
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Coccinelle parallelization
|
||||
---------------------------
|
||||
|
||||
By default, coccicheck tries to run as parallel as possible. To change
|
||||
the parallelism, set the J= variable. For example, to run across 4 CPUs:
|
||||
the parallelism, set the J= variable. For example, to run across 4 CPUs::
|
||||
|
||||
make coccicheck MODE=report J=4
|
||||
|
||||
@ -115,44 +125,47 @@ As of Coccinelle 1.0.2 Coccinelle uses Ocaml parmap for parallelization,
|
||||
if support for this is detected you will benefit from parmap parallelization.
|
||||
|
||||
When parmap is enabled coccicheck will enable dynamic load balancing by using
|
||||
'--chunksize 1' argument, this ensures we keep feeding threads with work
|
||||
``--chunksize 1`` argument, this ensures we keep feeding threads with work
|
||||
one by one, so that we avoid the situation where most work gets done by only
|
||||
a few threads. With dynamic load balancing, if a thread finishes early we keep
|
||||
feeding it more work.
|
||||
|
||||
When parmap is enabled, if an error occurs in Coccinelle, this error
|
||||
value is propagated back, the return value of the 'make coccicheck'
|
||||
value is propagated back, the return value of the ``make coccicheck``
|
||||
captures this return value.
|
||||
|
||||
Using Coccinelle with a single semantic patch
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Using Coccinelle with a single semantic patch
|
||||
---------------------------------------------
|
||||
|
||||
The optional make variable COCCI can be used to check a single
|
||||
semantic patch. In that case, the variable must be initialized with
|
||||
the name of the semantic patch to apply.
|
||||
|
||||
For instance:
|
||||
For instance::
|
||||
|
||||
make coccicheck COCCI=<my_SP.cocci> MODE=patch
|
||||
or
|
||||
|
||||
or::
|
||||
|
||||
make coccicheck COCCI=<my_SP.cocci> MODE=report
|
||||
|
||||
|
||||
Controlling Which Files are Processed by Coccinelle
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Controlling Which Files are Processed by Coccinelle
|
||||
---------------------------------------------------
|
||||
|
||||
By default the entire kernel source tree is checked.
|
||||
|
||||
To apply Coccinelle to a specific directory, M= can be used.
|
||||
For example, to check drivers/net/wireless/ one may write:
|
||||
To apply Coccinelle to a specific directory, ``M=`` can be used.
|
||||
For example, to check drivers/net/wireless/ one may write::
|
||||
|
||||
make coccicheck M=drivers/net/wireless/
|
||||
|
||||
To apply Coccinelle on a file basis, instead of a directory basis, the
|
||||
following command may be used:
|
||||
following command may be used::
|
||||
|
||||
make C=1 CHECK="scripts/coccicheck"
|
||||
|
||||
To check only newly edited code, use the value 2 for the C flag, i.e.
|
||||
To check only newly edited code, use the value 2 for the C flag, i.e.::
|
||||
|
||||
make C=2 CHECK="scripts/coccicheck"
|
||||
|
||||
@ -166,8 +179,8 @@ semantic patch as shown in the previous section.
|
||||
The "report" mode is the default. You can select another one with the
|
||||
MODE variable explained above.
|
||||
|
||||
Debugging Coccinelle SmPL patches
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Debugging Coccinelle SmPL patches
|
||||
---------------------------------
|
||||
|
||||
Using coccicheck is best as it provides in the spatch command line
|
||||
include options matching the options used when we compile the kernel.
|
||||
@ -177,8 +190,8 @@ manually run Coccinelle with debug options added.
|
||||
Alternatively you can debug running Coccinelle against SmPL patches
|
||||
by asking for stderr to be redirected to stderr, by default stderr
|
||||
is redirected to /dev/null, if you'd like to capture stderr you
|
||||
can specify the DEBUG_FILE="file.txt" option to coccicheck. For
|
||||
instance:
|
||||
can specify the ``DEBUG_FILE="file.txt"`` option to coccicheck. For
|
||||
instance::
|
||||
|
||||
rm -f cocci.err
|
||||
make coccicheck COCCI=scripts/coccinelle/free/kfree.cocci MODE=report DEBUG_FILE=cocci.err
|
||||
@ -186,7 +199,7 @@ instance:
|
||||
|
||||
You can use SPFLAGS to add debugging flags, for instance you may want to
|
||||
add both --profile --show-trying to SPFLAGS when debugging. For instance
|
||||
you may want to use:
|
||||
you may want to use::
|
||||
|
||||
rm -f err.log
|
||||
export COCCI=scripts/coccinelle/misc/irqf_oneshot.cocci
|
||||
@ -198,24 +211,24 @@ work.
|
||||
|
||||
DEBUG_FILE support is only supported when using coccinelle >= 1.2.
|
||||
|
||||
.cocciconfig support
|
||||
~~~~~~~~~~~~~~~~~~~~~~
|
||||
.cocciconfig support
|
||||
--------------------
|
||||
|
||||
Coccinelle supports reading .cocciconfig for default Coccinelle options that
|
||||
should be used every time spatch is spawned, the order of precedence for
|
||||
variables for .cocciconfig is as follows:
|
||||
|
||||
o Your current user's home directory is processed first
|
||||
o Your directory from which spatch is called is processed next
|
||||
o The directory provided with the --dir option is processed last, if used
|
||||
- Your current user's home directory is processed first
|
||||
- Your directory from which spatch is called is processed next
|
||||
- The directory provided with the --dir option is processed last, if used
|
||||
|
||||
Since coccicheck runs through make, it naturally runs from the kernel
|
||||
proper dir, as such the second rule above would be implied for picking up a
|
||||
.cocciconfig when using 'make coccicheck'.
|
||||
.cocciconfig when using ``make coccicheck``.
|
||||
|
||||
'make coccicheck' also supports using M= targets.If you do not supply
|
||||
``make coccicheck`` also supports using M= targets.If you do not supply
|
||||
any M= target, it is assumed you want to target the entire kernel.
|
||||
The kernel coccicheck script has:
|
||||
The kernel coccicheck script has::
|
||||
|
||||
if [ "$KBUILD_EXTMOD" = "" ] ; then
|
||||
OPTIONS="--dir $srctree $COCCIINCLUDE"
|
||||
@ -235,12 +248,12 @@ override any of the kernel's .coccicheck's settings using SPFLAGS.
|
||||
|
||||
We help Coccinelle when used against Linux with a set of sensible defaults
|
||||
options for Linux with our own Linux .cocciconfig. This hints to coccinelle
|
||||
git can be used for 'git grep' queries over coccigrep. A timeout of 200
|
||||
git can be used for ``git grep`` queries over coccigrep. A timeout of 200
|
||||
seconds should suffice for now.
|
||||
|
||||
The options picked up by coccinelle when reading a .cocciconfig do not appear
|
||||
as arguments to spatch processes running on your system, to confirm what
|
||||
options will be used by Coccinelle run:
|
||||
options will be used by Coccinelle run::
|
||||
|
||||
spatch --print-options-only
|
||||
|
||||
@ -252,219 +265,227 @@ carries its own .cocciconfig, you will need to use SPFLAGS to use idutils if
|
||||
desired. See below section "Additional flags" for more details on how to use
|
||||
idutils.
|
||||
|
||||
Additional flags
|
||||
~~~~~~~~~~~~~~~~~~
|
||||
Additional flags
|
||||
----------------
|
||||
|
||||
Additional flags can be passed to spatch through the SPFLAGS
|
||||
variable. This works as Coccinelle respects the last flags
|
||||
given to it when options are in conflict.
|
||||
given to it when options are in conflict. ::
|
||||
|
||||
make SPFLAGS=--use-glimpse coccicheck
|
||||
|
||||
Coccinelle supports idutils as well but requires coccinelle >= 1.0.6.
|
||||
When no ID file is specified coccinelle assumes your ID database file
|
||||
is in the file .id-utils.index on the top level of the kernel, coccinelle
|
||||
carries a script scripts/idutils_index.sh which creates the database with
|
||||
carries a script scripts/idutils_index.sh which creates the database with::
|
||||
|
||||
mkid -i C --output .id-utils.index
|
||||
|
||||
If you have another database filename you can also just symlink with this
|
||||
name.
|
||||
name. ::
|
||||
|
||||
make SPFLAGS=--use-idutils coccicheck
|
||||
|
||||
Alternatively you can specify the database filename explicitly, for
|
||||
instance:
|
||||
instance::
|
||||
|
||||
make SPFLAGS="--use-idutils /full-path/to/ID" coccicheck
|
||||
|
||||
See spatch --help to learn more about spatch options.
|
||||
See ``spatch --help`` to learn more about spatch options.
|
||||
|
||||
Note that the '--use-glimpse' and '--use-idutils' options
|
||||
Note that the ``--use-glimpse`` and ``--use-idutils`` options
|
||||
require external tools for indexing the code. None of them is
|
||||
thus active by default. However, by indexing the code with
|
||||
one of these tools, and according to the cocci file used,
|
||||
spatch could proceed the entire code base more quickly.
|
||||
|
||||
SmPL patch specific options
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
SmPL patch specific options
|
||||
---------------------------
|
||||
|
||||
SmPL patches can have their own requirements for options passed
|
||||
to Coccinelle. SmPL patch specific options can be provided by
|
||||
providing them at the top of the SmPL patch, for instance:
|
||||
providing them at the top of the SmPL patch, for instance::
|
||||
|
||||
// Options: --no-includes --include-headers
|
||||
// Options: --no-includes --include-headers
|
||||
|
||||
SmPL patch Coccinelle requirements
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
SmPL patch Coccinelle requirements
|
||||
----------------------------------
|
||||
|
||||
As Coccinelle features get added some more advanced SmPL patches
|
||||
may require newer versions of Coccinelle. If an SmPL patch requires
|
||||
at least a version of Coccinelle, this can be specified as follows,
|
||||
as an example if requiring at least Coccinelle >= 1.0.5:
|
||||
as an example if requiring at least Coccinelle >= 1.0.5::
|
||||
|
||||
// Requires: 1.0.5
|
||||
// Requires: 1.0.5
|
||||
|
||||
Proposing new semantic patches
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Proposing new semantic patches
|
||||
-------------------------------
|
||||
|
||||
New semantic patches can be proposed and submitted by kernel
|
||||
developers. For sake of clarity, they should be organized in the
|
||||
sub-directories of 'scripts/coccinelle/'.
|
||||
sub-directories of ``scripts/coccinelle/``.
|
||||
|
||||
|
||||
Detailed description of the 'report' mode
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Detailed description of the ``report`` mode
|
||||
-------------------------------------------
|
||||
|
||||
``report`` generates a list in the following format::
|
||||
|
||||
'report' generates a list in the following format:
|
||||
file:line:column-column: message
|
||||
|
||||
Example:
|
||||
Example
|
||||
~~~~~~~
|
||||
|
||||
Running
|
||||
Running::
|
||||
|
||||
make coccicheck MODE=report COCCI=scripts/coccinelle/api/err_cast.cocci
|
||||
|
||||
will execute the following part of the SmPL script.
|
||||
will execute the following part of the SmPL script::
|
||||
|
||||
<smpl>
|
||||
@r depends on !context && !patch && (org || report)@
|
||||
expression x;
|
||||
position p;
|
||||
@@
|
||||
<smpl>
|
||||
@r depends on !context && !patch && (org || report)@
|
||||
expression x;
|
||||
position p;
|
||||
@@
|
||||
|
||||
ERR_PTR@p(PTR_ERR(x))
|
||||
ERR_PTR@p(PTR_ERR(x))
|
||||
|
||||
@script:python depends on report@
|
||||
p << r.p;
|
||||
x << r.x;
|
||||
@@
|
||||
@script:python depends on report@
|
||||
p << r.p;
|
||||
x << r.x;
|
||||
@@
|
||||
|
||||
msg="ERR_CAST can be used with %s" % (x)
|
||||
coccilib.report.print_report(p[0], msg)
|
||||
</smpl>
|
||||
msg="ERR_CAST can be used with %s" % (x)
|
||||
coccilib.report.print_report(p[0], msg)
|
||||
</smpl>
|
||||
|
||||
This SmPL excerpt generates entries on the standard output, as
|
||||
illustrated below:
|
||||
illustrated below::
|
||||
|
||||
/home/user/linux/crypto/ctr.c:188:9-16: ERR_CAST can be used with alg
|
||||
/home/user/linux/crypto/authenc.c:619:9-16: ERR_CAST can be used with auth
|
||||
/home/user/linux/crypto/xts.c:227:9-16: ERR_CAST can be used with alg
|
||||
/home/user/linux/crypto/ctr.c:188:9-16: ERR_CAST can be used with alg
|
||||
/home/user/linux/crypto/authenc.c:619:9-16: ERR_CAST can be used with auth
|
||||
/home/user/linux/crypto/xts.c:227:9-16: ERR_CAST can be used with alg
|
||||
|
||||
|
||||
Detailed description of the 'patch' mode
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Detailed description of the ``patch`` mode
|
||||
------------------------------------------
|
||||
|
||||
When the 'patch' mode is available, it proposes a fix for each problem
|
||||
When the ``patch`` mode is available, it proposes a fix for each problem
|
||||
identified.
|
||||
|
||||
Example:
|
||||
Example
|
||||
~~~~~~~
|
||||
|
||||
Running::
|
||||
|
||||
Running
|
||||
make coccicheck MODE=patch COCCI=scripts/coccinelle/api/err_cast.cocci
|
||||
|
||||
will execute the following part of the SmPL script.
|
||||
will execute the following part of the SmPL script::
|
||||
|
||||
<smpl>
|
||||
@ depends on !context && patch && !org && !report @
|
||||
expression x;
|
||||
@@
|
||||
<smpl>
|
||||
@ depends on !context && patch && !org && !report @
|
||||
expression x;
|
||||
@@
|
||||
|
||||
- ERR_PTR(PTR_ERR(x))
|
||||
+ ERR_CAST(x)
|
||||
</smpl>
|
||||
- ERR_PTR(PTR_ERR(x))
|
||||
+ ERR_CAST(x)
|
||||
</smpl>
|
||||
|
||||
This SmPL excerpt generates patch hunks on the standard output, as
|
||||
illustrated below:
|
||||
illustrated below::
|
||||
|
||||
diff -u -p a/crypto/ctr.c b/crypto/ctr.c
|
||||
--- a/crypto/ctr.c 2010-05-26 10:49:38.000000000 +0200
|
||||
+++ b/crypto/ctr.c 2010-06-03 23:44:49.000000000 +0200
|
||||
@@ -185,7 +185,7 @@ static struct crypto_instance *crypto_ct
|
||||
diff -u -p a/crypto/ctr.c b/crypto/ctr.c
|
||||
--- a/crypto/ctr.c 2010-05-26 10:49:38.000000000 +0200
|
||||
+++ b/crypto/ctr.c 2010-06-03 23:44:49.000000000 +0200
|
||||
@@ -185,7 +185,7 @@ static struct crypto_instance *crypto_ct
|
||||
alg = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_CIPHER,
|
||||
CRYPTO_ALG_TYPE_MASK);
|
||||
if (IS_ERR(alg))
|
||||
- return ERR_PTR(PTR_ERR(alg));
|
||||
+ return ERR_CAST(alg);
|
||||
|
||||
- return ERR_PTR(PTR_ERR(alg));
|
||||
+ return ERR_CAST(alg);
|
||||
|
||||
/* Block size must be >= 4 bytes. */
|
||||
err = -EINVAL;
|
||||
|
||||
Detailed description of the 'context' mode
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Detailed description of the ``context`` mode
|
||||
--------------------------------------------
|
||||
|
||||
'context' highlights lines of interest and their context
|
||||
``context`` highlights lines of interest and their context
|
||||
in a diff-like style.
|
||||
|
||||
NOTE: The diff-like output generated is NOT an applicable patch. The
|
||||
intent of the 'context' mode is to highlight the important lines
|
||||
(annotated with minus, '-') and gives some surrounding context
|
||||
**NOTE**: The diff-like output generated is NOT an applicable patch. The
|
||||
intent of the ``context`` mode is to highlight the important lines
|
||||
(annotated with minus, ``-``) and gives some surrounding context
|
||||
lines around. This output can be used with the diff mode of
|
||||
Emacs to review the code.
|
||||
|
||||
Example:
|
||||
Example
|
||||
~~~~~~~
|
||||
|
||||
Running::
|
||||
|
||||
Running
|
||||
make coccicheck MODE=context COCCI=scripts/coccinelle/api/err_cast.cocci
|
||||
|
||||
will execute the following part of the SmPL script.
|
||||
will execute the following part of the SmPL script::
|
||||
|
||||
<smpl>
|
||||
@ depends on context && !patch && !org && !report@
|
||||
expression x;
|
||||
@@
|
||||
<smpl>
|
||||
@ depends on context && !patch && !org && !report@
|
||||
expression x;
|
||||
@@
|
||||
|
||||
* ERR_PTR(PTR_ERR(x))
|
||||
</smpl>
|
||||
* ERR_PTR(PTR_ERR(x))
|
||||
</smpl>
|
||||
|
||||
This SmPL excerpt generates diff hunks on the standard output, as
|
||||
illustrated below:
|
||||
illustrated below::
|
||||
|
||||
diff -u -p /home/user/linux/crypto/ctr.c /tmp/nothing
|
||||
--- /home/user/linux/crypto/ctr.c 2010-05-26 10:49:38.000000000 +0200
|
||||
+++ /tmp/nothing
|
||||
@@ -185,7 +185,6 @@ static struct crypto_instance *crypto_ct
|
||||
diff -u -p /home/user/linux/crypto/ctr.c /tmp/nothing
|
||||
--- /home/user/linux/crypto/ctr.c 2010-05-26 10:49:38.000000000 +0200
|
||||
+++ /tmp/nothing
|
||||
@@ -185,7 +185,6 @@ static struct crypto_instance *crypto_ct
|
||||
alg = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_CIPHER,
|
||||
CRYPTO_ALG_TYPE_MASK);
|
||||
if (IS_ERR(alg))
|
||||
- return ERR_PTR(PTR_ERR(alg));
|
||||
|
||||
- return ERR_PTR(PTR_ERR(alg));
|
||||
|
||||
/* Block size must be >= 4 bytes. */
|
||||
err = -EINVAL;
|
||||
|
||||
Detailed description of the 'org' mode
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Detailed description of the ``org`` mode
|
||||
----------------------------------------
|
||||
|
||||
'org' generates a report in the Org mode format of Emacs.
|
||||
``org`` generates a report in the Org mode format of Emacs.
|
||||
|
||||
Example:
|
||||
Example
|
||||
~~~~~~~
|
||||
|
||||
Running::
|
||||
|
||||
Running
|
||||
make coccicheck MODE=org COCCI=scripts/coccinelle/api/err_cast.cocci
|
||||
|
||||
will execute the following part of the SmPL script.
|
||||
will execute the following part of the SmPL script::
|
||||
|
||||
<smpl>
|
||||
@r depends on !context && !patch && (org || report)@
|
||||
expression x;
|
||||
position p;
|
||||
@@
|
||||
<smpl>
|
||||
@r depends on !context && !patch && (org || report)@
|
||||
expression x;
|
||||
position p;
|
||||
@@
|
||||
|
||||
ERR_PTR@p(PTR_ERR(x))
|
||||
ERR_PTR@p(PTR_ERR(x))
|
||||
|
||||
@script:python depends on org@
|
||||
p << r.p;
|
||||
x << r.x;
|
||||
@@
|
||||
@script:python depends on org@
|
||||
p << r.p;
|
||||
x << r.x;
|
||||
@@
|
||||
|
||||
msg="ERR_CAST can be used with %s" % (x)
|
||||
msg_safe=msg.replace("[","@(").replace("]",")")
|
||||
coccilib.org.print_todo(p[0], msg_safe)
|
||||
</smpl>
|
||||
msg="ERR_CAST can be used with %s" % (x)
|
||||
msg_safe=msg.replace("[","@(").replace("]",")")
|
||||
coccilib.org.print_todo(p[0], msg_safe)
|
||||
</smpl>
|
||||
|
||||
This SmPL excerpt generates Org entries on the standard output, as
|
||||
illustrated below:
|
||||
illustrated below::
|
||||
|
||||
* TODO [[view:/home/user/linux/crypto/ctr.c::face=ovl-face1::linb=188::colb=9::cole=16][ERR_CAST can be used with alg]]
|
||||
* TODO [[view:/home/user/linux/crypto/authenc.c::face=ovl-face1::linb=619::colb=9::cole=16][ERR_CAST can be used with auth]]
|
||||
* TODO [[view:/home/user/linux/crypto/xts.c::face=ovl-face1::linb=227::colb=9::cole=16][ERR_CAST can be used with alg]]
|
||||
* TODO [[view:/home/user/linux/crypto/ctr.c::face=ovl-face1::linb=188::colb=9::cole=16][ERR_CAST can be used with alg]]
|
||||
* TODO [[view:/home/user/linux/crypto/authenc.c::face=ovl-face1::linb=619::colb=9::cole=16][ERR_CAST can be used with auth]]
|
||||
* TODO [[view:/home/user/linux/crypto/xts.c::face=ovl-face1::linb=227::colb=9::cole=16][ERR_CAST can be used with alg]]
|
||||
@ -14,3 +14,4 @@ whole; patches welcome!
|
||||
.. toctree::
|
||||
:maxdepth: 2
|
||||
|
||||
coccinelle
|
||||
|
||||
@ -3124,7 +3124,7 @@ L: cocci@systeme.lip6.fr (moderated for non-subscribers)
|
||||
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild.git misc
|
||||
W: http://coccinelle.lip6.fr/
|
||||
S: Supported
|
||||
F: Documentation/coccinelle.txt
|
||||
F: Documentation/dev-tools/coccinelle.rst
|
||||
F: scripts/coccinelle/
|
||||
F: scripts/coccicheck
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user