scripts/coccinelle/api/resource_size.cocci

File Facts

System

Linux kernel

Corpus path

scripts/coccinelle/api/resource_size.cocci

Extension

.cocci

Size

2153 bytes

Lines

95

Domain

Support Tooling And Documentation

Bucket

scripts

Inferred role

Support Tooling And Documentation: scripts

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
///
/// Use resource_size function on resource object
/// instead of explicit computation.
///
//  Confidence: High
//  Copyright: (C) 2009, 2010 Nicolas Palix, DIKU.
//  Copyright: (C) 2009, 2010 Julia Lawall, DIKU.
//  Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6.
//  URL: https://coccinelle.gitlabpages.inria.fr/website
//  Options:
//
//  Keywords: resource_size
//  Version min: 2.6.27 resource_size
//

virtual context
virtual patch
virtual org
virtual report

//----------------------------------------------------------
//  For context mode
//----------------------------------------------------------

@r_context depends on context && !patch && !org@
struct resource *res;
@@

* (res->end - res->start) + 1

//----------------------------------------------------------
//  For patch mode
//----------------------------------------------------------

@r_patch depends on !context && patch && !org@
struct resource *res;
@@

- (res->end - res->start) + 1
+ resource_size(res)

//----------------------------------------------------------
//  For org mode
//----------------------------------------------------------


@r_org depends on !context && !patch && (org || report)@
struct resource *res;
position p;
@@

 (res->end@p - res->start) + 1

@rbad_org depends on !context && !patch && (org || report)@
struct resource *res;
position p != r_org.p;
@@

 res->end@p - res->start

@script:python depends on org@
p << r_org.p;
x << r_org.res;
@@

msg="ERROR with %s" % (x)
msg_safe=msg.replace("[","@(").replace("]",")")
coccilib.org.print_todo(p[0], msg_safe)

Annotation

• Atlas domain: Support Tooling And Documentation / scripts.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.