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PVE::Syscall: add new mount api constants

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2019-11-08 11:06:12 +01:00 committed by Thomas Lamprecht
parent 1b0bc6c0ab
commit 5569cc1634
1 changed files with 68 additions and 1 deletions
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69
src/PVE/Syscall.pm
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@ -1,6 +1,7 @@
package PVE::Syscall;
my %syscalls;
my %fsmount_constants;
BEGIN {
die "syscall.ph can only be required once!\n" if $INC{'syscall.ph'};
require("syscall.ph");
@ -15,11 +16,77 @@ BEGIN {
faccessat => &SYS_faccessat,
setresuid => &SYS_setresuid,
fchownat => &SYS_fchownat,
mount => &SYS_mount,
# These use asm-generic, so they're the same across (sane) architectures. We use numbers
# since they're not in perl's syscall.ph yet...
open_tree => 428,
move_mount => 429,
fsopen => 430,
fsconfig => 431,
fsmount => 432,
fspick => 433,
);
%fsmount_constants = (
OPEN_TREE_CLONE => 0x0000_0001,
OPEN_TREE_CLOEXEC => 000200_0000, # octal!
MOVE_MOUNT_F_SYMLINKS => 0x0000_0001,
MOVE_MOUNT_F_AUTOMOUNTS => 0x0000_0002,
MOVE_MOUNT_F_EMPTY_PATH => 0x0000_0004,
MOVE_MOUNT_F_MASK => 0x0000_0007,
MOVE_MOUNT_T_SYMLINKS => 0x0000_0010,
MOVE_MOUNT_T_AUTOMOUNTS => 0x0000_0020,
MOVE_MOUNT_T_EMPTY_PATH => 0x0000_0040,
MOVE_MOUNT_T_MASK => 0x0000_0070,
FSMOUNT_CLOEXEC => 0x0000_0001,
FSOPEN_CLOEXEC => 0x0000_0001,
MOUNT_ATTR_RDONLY => 0x0000_0001,
MOUNT_ATTR_NOSUID => 0x0000_0002,
MOUNT_ATTR_NODEV => 0x0000_0004,
MOUNT_ATTR_NOEXEC => 0x0000_0008,
MOUNT_ATTR_RELATIME => 0x0000_0000,
MOUNT_ATTR_NOATIME => 0x0000_0010,
MOUNT_ATTR_STRICTATIME => 0x0000_0020,
MOUNT_ATTR_NODIRATIME => 0x0000_0080,
FSPICK_CLOEXEC => 0x0000_0001,
FSPICK_SYMLINK_NOFOLLOW => 0x0000_0002,
FSPICK_NO_AUTOMOUNT => 0x0000_0004,
FSPICK_EMPTY_PATH => 0x0000_0008,
FSCONFIG_SET_FLAG => 0,
FSCONFIG_SET_STRING => 1,
FSCONFIG_SET_BINARY => 2,
FSCONFIG_SET_PATH => 3,
FSCONFIG_SET_PATH_EMPTY => 4,
FSCONFIG_SET_FD => 5,
FSCONFIG_CMD_CREATE => 6,
FSCONFIG_CMD_RECONFIGURE => 7,
);
};
use constant \%syscalls;
use constant \%fsmount_constants;
use base 'Exporter';
our @EXPORT_OK = keys(%syscalls);
our @EXPORT_OK = (keys(%syscalls), keys(%fsmount_constants), 'file_handle_result');
our %EXPORT_TAGS = (fsmount => [keys(%fsmount_constants)]);
# Create a file handle from a numeric file descriptor (to make sure it's close()d when it goes out
# of scope).
sub file_handle_result($) {
my ($fd_num) = @_;
return undef if $fd_num < 0;
open(my $fh, '<&=', $fd_num)
or return undef;
return $fh;
}