The check-file-access.pl script is used to match access list
generated by virtestmock against whitelisted rules stored in
file_access_whitelist.txt. So far the rules are in form:
$path: $progname: $testname
This is not sufficient because the rule does not take into
account 'action' that caused $path to appear in the list of
accessed files. After this commit the rule can be in new form:
$path: $action: $progname: $testname
where $action is one from ("open", "fopen", "access", "stat",
"lstat", "connect"). This way the white list can be fine tuned to
allow say access() but not connect().
Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
tests/check-file-access.pl | 32 +++++++++++++++++++++++++++-----
tests/file_access_whitelist.txt | 15 ++++++++++-----
2 files changed, 37 insertions(+), 10 deletions(-)
diff --git a/tests/check-file-access.pl b/tests/check-file-access.pl
index 977a2bc533..ea0b7a18a2 100755
--- a/tests/check-file-access.pl
+++ b/tests/check-file-access.pl
@@ -27,18 +27,21 @@ use warnings;
my $access_file = "test_file_access.txt";
my $whitelist_file = "file_access_whitelist.txt";
+my @known_actions = ("open", "fopen", "access", "stat", "lstat", "connect");
+
my @files;
my @whitelist;
open FILE, "<", $access_file or die "Unable to open $access_file: $!";
while (<FILE>) {
chomp;
- if (/^(\S*):\s*(\S*)(\s*:\s*(.*))?$/) {
+ if (/^(\S*):\s*(\S*):\s*(\S*)(\s*:\s*(.*))?$/) {
my %rec;
${rec}{path} = $1;
- ${rec}{progname} = $2;
- if (defined $4) {
- ${rec}{testname} = $4;
+ ${rec}{action} = $2;
+ ${rec}{progname} = $3;
+ if (defined $5) {
+ ${rec}{testname} = $5;
}
push (@files, \%rec);
} else {
@@ -52,7 +55,21 @@ while (<FILE>) {
chomp;
if (/^\s*#.*$/) {
# comment
+ } elsif (/^(\S*):\s*(\S*)(:\s*(\S*)(\s*:\s*(.*))?)?$/ and
+ grep /^$2$/, @known_actions) {
+ # $path: $action: $progname: $testname
+ my %rec;
+ ${rec}{path} = $1;
+ ${rec}{action} = $3;
+ if (defined $4) {
+ ${rec}{progname} = $4;
+ }
+ if (defined $6) {
+ ${rec}{testname} = $6;
+ }
+ push (@whitelist, \%rec);
} elsif (/^(\S*)(:\s*(\S*)(\s*:\s*(.*))?)?$/) {
+ # $path: $progname: $testname
my %rec;
${rec}{path} = $1;
if (defined $3) {
@@ -79,6 +96,11 @@ for my $file (@files) {
next;
}
+ if (defined %${rule}{action} and
+ not %${file}{action} =~ m/^$rule->{action}$/) {
+ next;
+ }
+
if (defined %${rule}{progname} and
not %${file}{progname} =~ m/^$rule->{progname}$/) {
next;
@@ -95,7 +117,7 @@ for my $file (@files) {
if (not $match) {
$error = 1;
- print "$file->{path}: $file->{progname}";
+ print "$file->{path}: $file->{action}: $file->{progname}";
print ": $file->{testname}" if defined %${file}{testname};
print "\n";
}
diff --git a/tests/file_access_whitelist.txt b/tests/file_access_whitelist.txt
index 850b28506e..3fb318cbab 100644
--- a/tests/file_access_whitelist.txt
+++ b/tests/file_access_whitelist.txt
@@ -1,14 +1,17 @@
# This is a whitelist that allows accesses to files not in our
# build directory nor source directory. The records are in the
-# following format:
+# following formats:
#
# $path: $progname: $testname
+# $path: $action: $progname: $testname
#
-# All these three are evaluated as perl RE. So to allow /dev/sda
-# and /dev/sdb, you can just '/dev/sd[a-b]', or to allow
+# All these variables are evaluated as perl RE. So to allow
+# /dev/sda and /dev/sdb, you can just '/dev/sd[a-b]', or to allow
# /proc/$pid/status you can '/proc/\d+/status' and so on.
-# Moreover, $progname and $testname can be empty, in which which
-# case $path is allowed for all tests.
+# Moreover, $action, $progname and $testname can be empty, in which
+# which case $path is allowed for all tests. However, $action (if
+# specified) must be one of "open", "fopen", "access", "stat",
+# "lstat", "connect".
/bin/cat: sysinfotest
/bin/dirname: sysinfotest: x86 sysinfo
@@ -19,5 +22,7 @@
/etc/hosts
/proc/\d+/status
+/etc/passwd: fopen
+
# This is just a dummy example, DO NOT USE IT LIKE THAT!
.*: nonexistent-test-touching-everything
--
2.16.4
--
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