tools: add fchownat syscall

[pve-common.git] / src / PVE / Tools.pm

diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm
index 9b5614f148e7db4bdc1b5a3650c605d8a1d4b7dd..550da09a609ddcf39f7999cc384bb312515192ed 100644 (file)
--- a/src/PVE/Tools.pm
+++ b/src/PVE/Tools.pm
@@ -85,6 +85,8 @@ use constant {CLONE_NEWNS   => 0x00020000,
 use constant {O_PATH    => 0x00200000,
               O_TMPFILE => 0x00410000}; # This includes O_DIRECTORY
 
+use constant {AT_EMPTY_PATH => 0x1000};
+
 sub run_with_timeout {
     my ($timeout, $code, @param) = @_;
 
@@ -1556,6 +1558,11 @@ sub mkdirat($$$) {
     return syscall(PVE::Syscall::mkdirat, $dirfd, $name, $mode) == 0;
 }
 
+sub fchownat($$$$$) {
+    my ($dirfd, $pathname, $owner, $group, $flags) = @_;
+    return syscall(PVE::Syscall::fchownat, $dirfd, $pathname, $owner, $group, $flags) == 0;
+}
+
 my $salt_starter = time();
 
 sub encrypt_pw {
@@ -1654,6 +1661,10 @@ sub dev_t_minor($) {
 sub array_intersect {
     my ($arrays) = @_;
 
+    if (!ref($arrays->[0])) {
+       $arrays = [ grep { ref($_) eq 'ARRAY' } @_ ];
+    }
+
     return [] if scalar(@$arrays) == 0;
     return $arrays->[0] if scalar(@$arrays) == 1;
 
@@ -1677,6 +1688,7 @@ sub array_intersect {
        foreach my $element (keys %count) {
            push @$return_arr, $element if $count{$element} > 1;
        }
+       last if scalar(@$return_arr) == 0; # empty intersection, early exit
     }
 
     return $return_arr;