39ceda5ce1
Pull Kbuild updates from Masahiro Yamada:
- remove headers_{install,check}_all targets
- remove unreasonable 'depends on !UML' from CONFIG_SAMPLES
- re-implement 'make headers_install' more cleanly
- add new header-test-y syntax to compile-test headers
- compile-test exported headers to ensure they are compilable in
user-space
- compile-test headers under include/ to ensure they are self-contained
- remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value
flags
- add -Werror=unknown-warning-option for Clang
- add 128-bit built-in types support to genksyms
- fix missed rebuild of modules.builtin
- propagate 'No space left on device' error in fixdep to Make
- allow Clang to use its integrated assembler
- improve some coccinelle scripts
- add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
path for $(srctree).
- do not ignore errors when compression utility is missing
- misc cleanups
* tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (49 commits)
kbuild: use -- separater intead of $(filter-out ...) for cc-cross-prefix
kbuild: Inform user to pass ARCH= for make mrproper
kbuild: fix compression errors getting ignored
kbuild: add a flag to force absolute path for srctree
kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree
kbuild: remove src and obj from the top Makefile
scripts/tags.sh: remove unused environment variables from comments
scripts/tags.sh: drop SUBARCH support for ARM
kbuild: compile-test kernel headers to ensure they are self-contained
kheaders: include only headers into kheaders_data.tar.xz
kheaders: remove meaningless -R option of 'ls'
kbuild: support header-test-pattern-y
kbuild: do not create wrappers for header-test-y
kbuild: compile-test exported headers to ensure they are self-contained
init/Kconfig: add CONFIG_CC_CAN_LINK
kallsyms: exclude kasan local symbols on s390
kbuild: add more hints about SUBDIRS replacement
coccinelle: api/stream_open: treat all wait_.*() calls as blocking
coccinelle: put_device: Add a cast to an expression for an assignment
coccinelle: put_device: Adjust a message construction
...
106 lines
2.4 KiB
Plaintext
106 lines
2.4 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only
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/// Use kstrdup rather than duplicating its implementation
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///
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// Confidence: High
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// Copyright: (C) 2010-2012 Nicolas Palix.
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// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.
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// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.
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// URL: http://coccinelle.lip6.fr/
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// Comments:
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// Options: --no-includes --include-headers
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virtual patch
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virtual context
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virtual org
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virtual report
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@depends on patch@
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expression from,to;
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expression flag,E1,E2;
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statement S;
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@@
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- to = kmalloc(strlen(from) + 1,flag);
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+ to = kstrdup(from, flag);
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... when != \(from = E1 \| to = E1 \)
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if (to==NULL || ...) S
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... when != \(from = E2 \| to = E2 \)
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- strcpy(to, from);
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@depends on patch@
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expression x,from,to;
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expression flag,E1,E2,E3;
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statement S;
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@@
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- x = strlen(from) + 1;
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... when != \( x = E1 \| from = E1 \)
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- to = \(kmalloc\|kzalloc\)(x,flag);
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+ to = kstrdup(from, flag);
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... when != \(x = E2 \| from = E2 \| to = E2 \)
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if (to==NULL || ...) S
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... when != \(x = E3 \| from = E3 \| to = E3 \)
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- memcpy(to, from, x);
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// ---------------------------------------------------------------------
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@r1 depends on !patch exists@
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expression from,to;
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expression flag,E1,E2;
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statement S;
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position p1,p2;
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@@
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* to = kmalloc@p1(strlen(from) + 1,flag);
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... when != \(from = E1 \| to = E1 \)
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if (to==NULL || ...) S
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... when != \(from = E2 \| to = E2 \)
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* strcpy@p2(to, from);
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@r2 depends on !patch exists@
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expression x,from,to;
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expression flag,E1,E2,E3;
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statement S;
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position p1,p2;
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@@
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* x = strlen(from) + 1;
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... when != \( x = E1 \| from = E1 \)
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* to = \(kmalloc@p1\|kzalloc@p2\)(x,flag);
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... when != \(x = E2 \| from = E2 \| to = E2 \)
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if (to==NULL || ...) S
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... when != \(x = E3 \| from = E3 \| to = E3 \)
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* memcpy@p2(to, from, x);
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@script:python depends on org@
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p1 << r1.p1;
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p2 << r1.p2;
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@@
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cocci.print_main("WARNING opportunity for kstrdup",p1)
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cocci.print_secs("strcpy",p2)
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@script:python depends on org@
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p1 << r2.p1;
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p2 << r2.p2;
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@@
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cocci.print_main("WARNING opportunity for kstrdup",p1)
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cocci.print_secs("memcpy",p2)
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@script:python depends on report@
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p1 << r1.p1;
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p2 << r1.p2;
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@@
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msg = "WARNING opportunity for kstrdup (strcpy on line %s)" % (p2[0].line)
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coccilib.report.print_report(p1[0], msg)
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@script:python depends on report@
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p1 << r2.p1;
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p2 << r2.p2;
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@@
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msg = "WARNING opportunity for kstrdup (memcpy on line %s)" % (p2[0].line)
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coccilib.report.print_report(p1[0], msg)
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