| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /* |
| * This is <linux/capability.h> |
| * |
| * Andrew G. Morgan <morgan@kernel.org> |
| * Alexander Kjeldaas <astor@guardian.no> |
| * with help from Aleph1, Roland Buresund and Andrew Main. |
| * |
| * See here for the libcap library ("POSIX draft" compliance): |
| * |
| * ftp://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.6/ |
| */ |
| |
| #ifndef _UAPI_LINUX_CAPABILITY_H |
| #define _UAPI_LINUX_CAPABILITY_H |
| |
| #include <linux/types.h> |
| |
| /* User-level do most of the mapping between kernel and user |
| capabilities based on the version tag given by the kernel. The |
| kernel might be somewhat backwards compatible, but don't bet on |
| it. */ |
| |
| /* Note, cap_t, is defined by POSIX (draft) to be an "opaque" pointer to |
| a set of three capability sets. The transposition of 3*the |
| following structure to such a composite is better handled in a user |
| library since the draft standard requires the use of malloc/free |
| etc.. */ |
| |
| #define _LINUX_CAPABILITY_VERSION_1 0x19980330 |
| #define _LINUX_CAPABILITY_U32S_1 1 |
| |
| #define _LINUX_CAPABILITY_VERSION_2 0x20071026 /* deprecated - use v3 */ |
| #define _LINUX_CAPABILITY_U32S_2 2 |
| |
| #define _LINUX_CAPABILITY_VERSION_3 0x20080522 |
| #define _LINUX_CAPABILITY_U32S_3 2 |
| |
| typedef struct __user_cap_header_struct { |
| __u32 version; |
| int pid; |
| } __user *cap_user_header_t; |
| |
| typedef struct __user_cap_data_struct { |
| __u32 effective; |
| __u32 permitted; |
| __u32 inheritable; |
| } __user *cap_user_data_t; |
| |
| |
| #define VFS_CAP_REVISION_MASK 0xFF000000 |
| #define VFS_CAP_REVISION_SHIFT 24 |
| #define VFS_CAP_FLAGS_MASK ~VFS_CAP_REVISION_MASK |
| #define VFS_CAP_FLAGS_EFFECTIVE 0x000001 |
| |
| #define VFS_CAP_REVISION_1 0x01000000 |
| #define VFS_CAP_U32_1 1 |
| #define XATTR_CAPS_SZ_1 (sizeof(__le32)*(1 + 2*VFS_CAP_U32_1)) |
| |
| #define VFS_CAP_REVISION_2 0x02000000 |
| #define VFS_CAP_U32_2 2 |
| #define XATTR_CAPS_SZ_2 (sizeof(__le32)*(1 + 2*VFS_CAP_U32_2)) |
| |
| #define VFS_CAP_REVISION_3 0x03000000 |
| #define VFS_CAP_U32_3 2 |
| #define XATTR_CAPS_SZ_3 (sizeof(__le32)*(2 + 2*VFS_CAP_U32_3)) |
| |
| #define XATTR_CAPS_SZ XATTR_CAPS_SZ_3 |
| #define VFS_CAP_U32 VFS_CAP_U32_3 |
| #define VFS_CAP_REVISION VFS_CAP_REVISION_3 |
| |
| struct vfs_cap_data { |
| __le32 magic_etc; /* Little endian */ |
| struct { |
| __le32 permitted; /* Little endian */ |
| __le32 inheritable; /* Little endian */ |
| } data[VFS_CAP_U32]; |
| }; |
| |
| /* |
| * same as vfs_cap_data but with a rootid at the end |
| */ |
| struct vfs_ns_cap_data { |
| __le32 magic_etc; |
| struct { |
| __le32 permitted; /* Little endian */ |
| __le32 inheritable; /* Little endian */ |
| } data[VFS_CAP_U32]; |
| __le32 rootid; |
| }; |
| |
| #ifndef __KERNEL__ |
| |
| /* |
| * Backwardly compatible definition for source code - trapped in a |
| * 32-bit world. If you find you need this, please consider using |
| * libcap to untrap yourself... |
| */ |
| #define _LINUX_CAPABILITY_VERSION _LINUX_CAPABILITY_VERSION_1 |
| #define _LINUX_CAPABILITY_U32S _LINUX_CAPABILITY_U32S_1 |
| |
| #endif |
| |
| |
| /** |
| ** POSIX-draft defined capabilities. |
| **/ |
| |
| /* In a system with the [_POSIX_CHOWN_RESTRICTED] option defined, this |
| overrides the restriction of changing file ownership and group |
| ownership. */ |
| |
| #define CAP_CHOWN 0 |
| |
| /* Override all DAC access, including ACL execute access if |
| [_POSIX_ACL] is defined. Excluding DAC access covered by |
| CAP_LINUX_IMMUTABLE. */ |
| |
| #define CAP_DAC_OVERRIDE 1 |
| |
| /* Overrides all DAC restrictions regarding read and search on files |
| and directories, including ACL restrictions if [_POSIX_ACL] is |
| defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE. */ |
| |
| #define CAP_DAC_READ_SEARCH 2 |
| |
| /* Overrides all restrictions about allowed operations on files, where |
| file owner ID must be equal to the user ID, except where CAP_FSETID |
| is applicable. It doesn't override MAC and DAC restrictions. */ |
| |
| #define CAP_FOWNER 3 |
| |
| /* Overrides the following restrictions that the effective user ID |
| shall match the file owner ID when setting the S_ISUID and S_ISGID |
| bits on that file; that the effective group ID (or one of the |
| supplementary group IDs) shall match the file owner ID when setting |
| the S_ISGID bit on that file; that the S_ISUID and S_ISGID bits are |
| cleared on successful return from chown(2) (not implemented). */ |
| |
| #define CAP_FSETID 4 |
| |
| /* Overrides the restriction that the real or effective user ID of a |
| process sending a signal must match the real or effective user ID |
| of the process receiving the signal. */ |
| |
| #define CAP_KILL 5 |
| |
| /* Allows setgid(2) manipulation */ |
| /* Allows setgroups(2) */ |
| /* Allows forged gids on socket credentials passing. */ |
| |
| #define CAP_SETGID 6 |
| |
| /* Allows set*uid(2) manipulation (including fsuid). */ |
| /* Allows forged pids on socket credentials passing. */ |
| |
| #define CAP_SETUID 7 |
| |
| |
| /** |
| ** Linux-specific capabilities |
| **/ |
| |
| /* Without VFS support for capabilities: |
| * Transfer any capability in your permitted set to any pid, |
| * remove any capability in your permitted set from any pid |
| * With VFS support for capabilities (neither of above, but) |
| * Add any capability from current's capability bounding set |
| * to the current process' inheritable set |
| * Allow taking bits out of capability bounding set |
| * Allow modification of the securebits for a process |
| */ |
| |
| #define CAP_SETPCAP 8 |
| |
| /* Allow modification of S_IMMUTABLE and S_APPEND file attributes */ |
| |
| #define CAP_LINUX_IMMUTABLE 9 |
| |
| /* Allows binding to TCP/UDP sockets below 1024 */ |
| /* Allows binding to ATM VCIs below 32 */ |
| |
| #define CAP_NET_BIND_SERVICE 10 |
| |
| /* Allow broadcasting, listen to multicast */ |
| |
| #define CAP_NET_BROADCAST 11 |
| |
| /* Allow interface configuration */ |
| /* Allow administration of IP firewall, masquerading and accounting */ |
| /* Allow setting debug option on sockets */ |
| /* Allow modification of routing tables */ |
| /* Allow setting arbitrary process / process group ownership on |
| sockets */ |
| /* Allow binding to any address for transparent proxying (also via NET_RAW) */ |
| /* Allow setting TOS (type of service) */ |
| /* Allow setting promiscuous mode */ |
| /* Allow clearing driver statistics */ |
| /* Allow multicasting */ |
| /* Allow read/write of device-specific registers */ |
| /* Allow activation of ATM control sockets */ |
| |
| #define CAP_NET_ADMIN 12 |
| |
| /* Allow use of RAW sockets */ |
| /* Allow use of PACKET sockets */ |
| /* Allow binding to any address for transparent proxying (also via NET_ADMIN) */ |
| |
| #define CAP_NET_RAW 13 |
| |
| /* Allow locking of shared memory segments */ |
| /* Allow mlock and mlockall (which doesn't really have anything to do |
| with IPC) */ |
| |
| #define CAP_IPC_LOCK 14 |
| |
| /* Override IPC ownership checks */ |
| |
| #define CAP_IPC_OWNER 15 |
| |
| /* Insert and remove kernel modules - modify kernel without limit */ |
| #define CAP_SYS_MODULE 16 |
| |
| /* Allow ioperm/iopl access */ |
| /* Allow sending USB messages to any device via /dev/bus/usb */ |
| |
| #define CAP_SYS_RAWIO 17 |
| |
| /* Allow use of chroot() */ |
| |
| #define CAP_SYS_CHROOT 18 |
| |
| /* Allow ptrace() of any process */ |
| |
| #define CAP_SYS_PTRACE 19 |
| |
| /* Allow configuration of process accounting */ |
| |
| #define CAP_SYS_PACCT 20 |
| |
| /* Allow configuration of the secure attention key */ |
| /* Allow administration of the random device */ |
| /* Allow examination and configuration of disk quotas */ |
| /* Allow setting the domainname */ |
| /* Allow setting the hostname */ |
| /* Allow mount() and umount(), setting up new smb connection */ |
| /* Allow some autofs root ioctls */ |
| /* Allow nfsservctl */ |
| /* Allow VM86_REQUEST_IRQ */ |
| /* Allow to read/write pci config on alpha */ |
| /* Allow irix_prctl on mips (setstacksize) */ |
| /* Allow flushing all cache on m68k (sys_cacheflush) */ |
| /* Allow removing semaphores */ |
| /* Used instead of CAP_CHOWN to "chown" IPC message queues, semaphores |
| and shared memory */ |
| /* Allow locking/unlocking of shared memory segment */ |
| /* Allow turning swap on/off */ |
| /* Allow forged pids on socket credentials passing */ |
| /* Allow setting readahead and flushing buffers on block devices */ |
| /* Allow setting geometry in floppy driver */ |
| /* Allow turning DMA on/off in xd driver */ |
| /* Allow administration of md devices (mostly the above, but some |
| extra ioctls) */ |
| /* Allow tuning the ide driver */ |
| /* Allow access to the nvram device */ |
| /* Allow administration of apm_bios, serial and bttv (TV) device */ |
| /* Allow manufacturer commands in isdn CAPI support driver */ |
| /* Allow reading non-standardized portions of pci configuration space */ |
| /* Allow DDI debug ioctl on sbpcd driver */ |
| /* Allow setting up serial ports */ |
| /* Allow sending raw qic-117 commands */ |
| /* Allow enabling/disabling tagged queuing on SCSI controllers and sending |
| arbitrary SCSI commands */ |
| /* Allow setting encryption key on loopback filesystem */ |
| /* Allow setting zone reclaim policy */ |
| /* Allow everything under CAP_BPF and CAP_PERFMON for backward compatibility */ |
| |
| #define CAP_SYS_ADMIN 21 |
| |
| /* Allow use of reboot() */ |
| |
| #define CAP_SYS_BOOT 22 |
| |
| /* Allow raising priority and setting priority on other (different |
| UID) processes */ |
| /* Allow use of FIFO and round-robin (realtime) scheduling on own |
| processes and setting the scheduling algorithm used by another |
| process. */ |
| /* Allow setting cpu affinity on other processes */ |
| /* Allow setting realtime ioprio class */ |
| /* Allow setting ioprio class on other processes */ |
| |
| #define CAP_SYS_NICE 23 |
| |
| /* Override resource limits. Set resource limits. */ |
| /* Override quota limits. */ |
| /* Override reserved space on ext2 filesystem */ |
| /* Modify data journaling mode on ext3 filesystem (uses journaling |
| resources) */ |
| /* NOTE: ext2 honors fsuid when checking for resource overrides, so |
| you can override using fsuid too */ |
| /* Override size restrictions on IPC message queues */ |
| /* Allow more than 64hz interrupts from the real-time clock */ |
| /* Override max number of consoles on console allocation */ |
| /* Override max number of keymaps */ |
| /* Control memory reclaim behavior */ |
| |
| #define CAP_SYS_RESOURCE 24 |
| |
| /* Allow manipulation of system clock */ |
| /* Allow irix_stime on mips */ |
| /* Allow setting the real-time clock */ |
| |
| #define CAP_SYS_TIME 25 |
| |
| /* Allow configuration of tty devices */ |
| /* Allow vhangup() of tty */ |
| |
| #define CAP_SYS_TTY_CONFIG 26 |
| |
| /* Allow the privileged aspects of mknod() */ |
| |
| #define CAP_MKNOD 27 |
| |
| /* Allow taking of leases on files */ |
| |
| #define CAP_LEASE 28 |
| |
| /* Allow writing the audit log via unicast netlink socket */ |
| |
| #define CAP_AUDIT_WRITE 29 |
| |
| /* Allow configuration of audit via unicast netlink socket */ |
| |
| #define CAP_AUDIT_CONTROL 30 |
| |
| /* Set or remove capabilities on files. |
| Map uid=0 into a child user namespace. */ |
| |
| #define CAP_SETFCAP 31 |
| |
| /* Override MAC access. |
| The base kernel enforces no MAC policy. |
| An LSM may enforce a MAC policy, and if it does and it chooses |
| to implement capability based overrides of that policy, this is |
| the capability it should use to do so. */ |
| |
| #define CAP_MAC_OVERRIDE 32 |
| |
| /* Allow MAC configuration or state changes. |
| The base kernel requires no MAC configuration. |
| An LSM may enforce a MAC policy, and if it does and it chooses |
| to implement capability based checks on modifications to that |
| policy or the data required to maintain it, this is the |
| capability it should use to do so. */ |
| |
| #define CAP_MAC_ADMIN 33 |
| |
| /* Allow configuring the kernel's syslog (printk behaviour) */ |
| |
| #define CAP_SYSLOG 34 |
| |
| /* Allow triggering something that will wake the system */ |
| |
| #define CAP_WAKE_ALARM 35 |
| |
| /* Allow preventing system suspends */ |
| |
| #define CAP_BLOCK_SUSPEND 36 |
| |
| /* Allow reading the audit log via multicast netlink socket */ |
| |
| #define CAP_AUDIT_READ 37 |
| |
| /* |
| * Allow system performance and observability privileged operations |
| * using perf_events, i915_perf and other kernel subsystems |
| */ |
| |
| #define CAP_PERFMON 38 |
| |
| /* |
| * CAP_BPF allows the following BPF operations: |
| * - Creating all types of BPF maps |
| * - Advanced verifier features |
| * - Indirect variable access |
| * - Bounded loops |
| * - BPF to BPF function calls |
| * - Scalar precision tracking |
| * - Larger complexity limits |
| * - Dead code elimination |
| * - And potentially other features |
| * - Loading BPF Type Format (BTF) data |
| * - Retrieve xlated and JITed code of BPF programs |
| * - Use bpf_spin_lock() helper |
| * |
| * CAP_PERFMON relaxes the verifier checks further: |
| * - BPF progs can use of pointer-to-integer conversions |
| * - speculation attack hardening measures are bypassed |
| * - bpf_probe_read to read arbitrary kernel memory is allowed |
| * - bpf_trace_printk to print kernel memory is allowed |
| * |
| * CAP_SYS_ADMIN is required to use bpf_probe_write_user. |
| * |
| * CAP_SYS_ADMIN is required to iterate system wide loaded |
| * programs, maps, links, BTFs and convert their IDs to file descriptors. |
| * |
| * CAP_PERFMON and CAP_BPF are required to load tracing programs. |
| * CAP_NET_ADMIN and CAP_BPF are required to load networking programs. |
| */ |
| #define CAP_BPF 39 |
| |
| |
| /* Allow checkpoint/restore related operations */ |
| /* Allow PID selection during clone3() */ |
| /* Allow writing to ns_last_pid */ |
| |
| #define CAP_CHECKPOINT_RESTORE 40 |
| |
| #define CAP_LAST_CAP CAP_CHECKPOINT_RESTORE |
| |
| #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) |
| |
| /* |
| * Bit location of each capability (used by user-space library and kernel) |
| */ |
| |
| #define CAP_TO_INDEX(x) ((x) >> 5) /* 1 << 5 == bits in __u32 */ |
| #define CAP_TO_MASK(x) (1U << ((x) & 31)) /* mask for indexed __u32 */ |
| |
| |
| #endif /* _UAPI_LINUX_CAPABILITY_H */ |