| Server IP : 74.208.127.88 / Your IP : 216.73.216.121 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /proc/self/root/lib/modules/5.4.0-163-generic/build/scripts/coccinelle/api/ |
Upload File : |
// SPDX-License-Identifier: GPL-2.0-only
/// Use kstrdup rather than duplicating its implementation
///
// Confidence: High
// Copyright: (C) 2010-2012 Nicolas Palix.
// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.
// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers
virtual patch
virtual context
virtual org
virtual report
@depends on patch@
expression from,to;
expression flag,E1,E2;
statement S;
@@
- to = kmalloc(strlen(from) + 1,flag);
+ to = kstrdup(from, flag);
... when != \(from = E1 \| to = E1 \)
if (to==NULL || ...) S
... when != \(from = E2 \| to = E2 \)
- strcpy(to, from);
@depends on patch@
expression x,from,to;
expression flag,E1,E2,E3;
statement S;
@@
- x = strlen(from) + 1;
... when != \( x = E1 \| from = E1 \)
- to = \(kmalloc\|kzalloc\)(x,flag);
+ to = kstrdup(from, flag);
... when != \(x = E2 \| from = E2 \| to = E2 \)
if (to==NULL || ...) S
... when != \(x = E3 \| from = E3 \| to = E3 \)
- memcpy(to, from, x);
// ---------------------------------------------------------------------
@r1 depends on !patch exists@
expression from,to;
expression flag,E1,E2;
statement S;
position p1,p2;
@@
* to = kmalloc@p1(strlen(from) + 1,flag);
... when != \(from = E1 \| to = E1 \)
if (to==NULL || ...) S
... when != \(from = E2 \| to = E2 \)
* strcpy@p2(to, from);
@r2 depends on !patch exists@
expression x,from,to;
expression flag,E1,E2,E3;
statement S;
position p1,p2;
@@
* x = strlen(from) + 1;
... when != \( x = E1 \| from = E1 \)
* to = \(kmalloc@p1\|kzalloc@p2\)(x,flag);
... when != \(x = E2 \| from = E2 \| to = E2 \)
if (to==NULL || ...) S
... when != \(x = E3 \| from = E3 \| to = E3 \)
* memcpy@p2(to, from, x);
@script:python depends on org@
p1 << r1.p1;
p2 << r1.p2;
@@
cocci.print_main("WARNING opportunity for kstrdup",p1)
cocci.print_secs("strcpy",p2)
@script:python depends on org@
p1 << r2.p1;
p2 << r2.p2;
@@
cocci.print_main("WARNING opportunity for kstrdup",p1)
cocci.print_secs("memcpy",p2)
@script:python depends on report@
p1 << r1.p1;
p2 << r1.p2;
@@
msg = "WARNING opportunity for kstrdup (strcpy on line %s)" % (p2[0].line)
coccilib.report.print_report(p1[0], msg)
@script:python depends on report@
p1 << r2.p1;
p2 << r2.p2;
@@
msg = "WARNING opportunity for kstrdup (memcpy on line %s)" % (p2[0].line)
coccilib.report.print_report(p1[0], msg)