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sysfstools: file_write: extend with logging

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the actual error and path is useful to know when trying to debug or
figure out what did not work, so warn here if there was an error.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2024-11-11 12:05:18 +01:00 committed by Thomas Lamprecht
parent bbca06d995
commit e8ab2427d6
1 changed files with 10 additions and 3 deletions
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13
src/PVE/SysFSTools.pm
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@ -211,17 +211,24 @@ sub check_iommu_support{
return PVE::Tools::dir_glob_regex('/sys/class/iommu/', "[^\.].*");
}
# writes $buf into $filename, on success returns 1, on error returns 0 and warns
sub file_write {
my ($filename, $buf) = @_;
my $fh = IO::File->new($filename, "w");
return undef if !$fh;
my $res = defined(syswrite($fh, $buf)) ? 1 : 0;
my $res = syswrite($fh, $buf);
my $syserr = $!; # only relevant if $res is undefined
$fh->close();
return $res;
if (defined($res)) {
return 1;
} elsif ($syserr) {
warn "error writing '$buf' to '$filename': $syserr\n";
}
return 0;
}
sub pci_device_info {