forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
61 lines
2.6 KiB
C
61 lines
2.6 KiB
C
#ifndef _UAPI_LINUX_SECUREBITS_H
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#define _UAPI_LINUX_SECUREBITS_H
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/* Each securesetting is implemented using two bits. One bit specifies
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whether the setting is on or off. The other bit specify whether the
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setting is locked or not. A setting which is locked cannot be
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changed from user-level. */
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#define issecure_mask(X) (1 << (X))
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#define SECUREBITS_DEFAULT 0x00000000
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/* When set UID 0 has no special privileges. When unset, we support
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inheritance of root-permissions and suid-root executable under
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compatibility mode. We raise the effective and inheritable bitmasks
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*of the executable file* if the effective uid of the new process is
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0. If the real uid is 0, we raise the effective (legacy) bit of the
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executable file. */
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#define SECURE_NOROOT 0
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#define SECURE_NOROOT_LOCKED 1 /* make bit-0 immutable */
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#define SECBIT_NOROOT (issecure_mask(SECURE_NOROOT))
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#define SECBIT_NOROOT_LOCKED (issecure_mask(SECURE_NOROOT_LOCKED))
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/* When set, setuid to/from uid 0 does not trigger capability-"fixup".
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When unset, to provide compatiblility with old programs relying on
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set*uid to gain/lose privilege, transitions to/from uid 0 cause
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capabilities to be gained/lost. */
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#define SECURE_NO_SETUID_FIXUP 2
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#define SECURE_NO_SETUID_FIXUP_LOCKED 3 /* make bit-2 immutable */
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#define SECBIT_NO_SETUID_FIXUP (issecure_mask(SECURE_NO_SETUID_FIXUP))
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#define SECBIT_NO_SETUID_FIXUP_LOCKED \
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(issecure_mask(SECURE_NO_SETUID_FIXUP_LOCKED))
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/* When set, a process can retain its capabilities even after
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transitioning to a non-root user (the set-uid fixup suppressed by
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bit 2). Bit-4 is cleared when a process calls exec(); setting both
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bit 4 and 5 will create a barrier through exec that no exec()'d
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child can use this feature again. */
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#define SECURE_KEEP_CAPS 4
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#define SECURE_KEEP_CAPS_LOCKED 5 /* make bit-4 immutable */
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#define SECBIT_KEEP_CAPS (issecure_mask(SECURE_KEEP_CAPS))
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#define SECBIT_KEEP_CAPS_LOCKED (issecure_mask(SECURE_KEEP_CAPS_LOCKED))
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/* When set, a process cannot add new capabilities to its ambient set. */
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#define SECURE_NO_CAP_AMBIENT_RAISE 6
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#define SECURE_NO_CAP_AMBIENT_RAISE_LOCKED 7 /* make bit-6 immutable */
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#define SECBIT_NO_CAP_AMBIENT_RAISE (issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE))
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#define SECBIT_NO_CAP_AMBIENT_RAISE_LOCKED \
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(issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE_LOCKED))
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#define SECURE_ALL_BITS (issecure_mask(SECURE_NOROOT) | \
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issecure_mask(SECURE_NO_SETUID_FIXUP) | \
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issecure_mask(SECURE_KEEP_CAPS) | \
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issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE))
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#define SECURE_ALL_LOCKS (SECURE_ALL_BITS << 1)
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#endif /* _UAPI_LINUX_SECUREBITS_H */
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