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checkpatch: deprecate unbounded string functions.

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Unbounded string functions are overflow risks.  The 'n'
versions of those functions should be used instead.

Change-Id: Ice0fb3ebdae9aa88cc7e764ffdf68cbed857febf
Signed-off-by: Gregory Bean <gbean@codeaurora.org>
(cherry picked from commit 15e1e97d66dd6a6039c1ec2bd549a632fe361128)
This commit is contained in:
Gregory Bean 2011-05-10 12:34:09 -07:00 committed by Stephen Boyd
parent 55bb2c050a
commit 3a4c8c77cc
1 changed files with 19 additions and 0 deletions
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19
scripts/checkpatch.pl
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@ -3272,6 +3272,25 @@ sub process {
$herecurr);
}
# unbounded string functions are overflow risks
my %str_fns = (
"sprintf" => "snprintf",
"strcpy" => "strncpy",
"strcat" => "strncat",
"strcmp" => "strncmp",
"strcasecmp" => "strncasecmp",
"strchr" => "strnchr",
"strstr" => "strnstr",
"strlen" => "strnlen",
);
foreach my $k (keys %str_fns) {
if ($line =~ /\b$k\b/) {
ERROR("Use of $k is deprecated: " .
"use $str_fns{$k} instead.\n" .
$herecurr);
}
}
# warn about #if 0
if ($line =~ /^.\s*\#\s*if\s+0\b/) {
WARN("if this code is redundant consider removing it\n"