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78273df7f6
The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies. Testing - it's been in -next, and fixes from pretty much all architectures have percolated in - nothing major. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmWfBwwACgkQE6szbY3K bnZPwBAAmuRojXaeWxi01IPIOehSGDe68vw44PR9glEMZvxdnZuPOdvE4/+245/L bRKU2WBCjBUokUbV9msIShwRkFTZAmEMPNfPAAsFMA+VXeDYHKB+ZRdwTggNAQ+I SG6fZgh5m0HsewCDxU8oqVHkjVq4fXn0cy+aL6xLEd9gu67GoBzX2pDieS2Kvy6j jnyoKTxFwb+LTQgph0P4EIpq5I2umAsdLwdSR8EJ+8e9NiNvMo1pI00Lx/ntAnFZ JftWUJcMy3TQ5u1GkyfQN9y/yThX1bZK5GvmHS9SJ2Dkacaus5d+xaKCHtRuFS1I 7C6b8PsNgRczUMumBXus44HdlNfNs1yU3lvVxFvBIPE1qC9pYRHrkWIXXIocXLLC oxTEJ6B2G3BQZVQgLIA4fOaxMVhmvKffi/aEZLi9vN9VVosd1a6XNKI6KbyRnXFp GSs9qDqszhn5I3GYNlDNQTc/8UsRlhPFgS6nS0By6QnvxtGi9QkU2tBRBsXvqwCy cLoCYIhc2tvugHvld70dz26umiJ4rnmxGlobStNoigDvIKAIUt1UmIdr1so8P8eH xehnL9ZcOX6xnANDL0AqMFFHV6I58CJynhFdUoXfVQf/DWLGX48mpi9LVNsYBzsI CAwVOAQ0UjGrpdWmJ9ueY/ABYqg9vRjzaDEXQ+MhAYO55CLaVsg= =3tyT -----END PGP SIGNATURE----- Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs Pull header cleanups from Kent Overstreet: "The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies" * tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits) Kill sched.h dependency on rcupdate.h kill unnecessary thread_info.h include Kill unnecessary kernel.h include preempt.h: Kill dependency on list.h rseq: Split out rseq.h from sched.h LoongArch: signal.c: add header file to fix build error restart_block: Trim includes lockdep: move held_lock to lockdep_types.h sem: Split out sem_types.h uidgid: Split out uidgid_types.h seccomp: Split out seccomp_types.h refcount: Split out refcount_types.h uapi/linux/resource.h: fix include x86/signal: kill dependency on time.h syscall_user_dispatch.h: split out *_types.h mm_types_task.h: Trim dependencies Split out irqflags_types.h ipc: Kill bogus dependency on spinlock.h shm: Slim down dependencies workqueue: Split out workqueue_types.h ...
195 lines
4.3 KiB
C
195 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_UIDGID_H
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#define _LINUX_UIDGID_H
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/*
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* A set of types for the internal kernel types representing uids and gids.
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*
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* The types defined in this header allow distinguishing which uids and gids in
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* the kernel are values used by userspace and which uid and gid values are
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* the internal kernel values. With the addition of user namespaces the values
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* can be different. Using the type system makes it possible for the compiler
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* to detect when we overlook these differences.
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*
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*/
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#include <linux/uidgid_types.h>
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#include <linux/highuid.h>
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struct user_namespace;
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extern struct user_namespace init_user_ns;
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struct uid_gid_map;
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#define KUIDT_INIT(value) (kuid_t){ value }
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#define KGIDT_INIT(value) (kgid_t){ value }
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#ifdef CONFIG_MULTIUSER
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static inline uid_t __kuid_val(kuid_t uid)
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{
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return uid.val;
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}
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static inline gid_t __kgid_val(kgid_t gid)
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{
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return gid.val;
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}
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#else
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static inline uid_t __kuid_val(kuid_t uid)
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{
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return 0;
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}
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static inline gid_t __kgid_val(kgid_t gid)
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{
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return 0;
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}
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#endif
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#define GLOBAL_ROOT_UID KUIDT_INIT(0)
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#define GLOBAL_ROOT_GID KGIDT_INIT(0)
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#define INVALID_UID KUIDT_INIT(-1)
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#define INVALID_GID KGIDT_INIT(-1)
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static inline bool uid_eq(kuid_t left, kuid_t right)
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{
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return __kuid_val(left) == __kuid_val(right);
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}
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static inline bool gid_eq(kgid_t left, kgid_t right)
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{
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return __kgid_val(left) == __kgid_val(right);
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}
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static inline bool uid_gt(kuid_t left, kuid_t right)
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{
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return __kuid_val(left) > __kuid_val(right);
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}
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static inline bool gid_gt(kgid_t left, kgid_t right)
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{
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return __kgid_val(left) > __kgid_val(right);
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}
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static inline bool uid_gte(kuid_t left, kuid_t right)
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{
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return __kuid_val(left) >= __kuid_val(right);
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}
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static inline bool gid_gte(kgid_t left, kgid_t right)
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{
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return __kgid_val(left) >= __kgid_val(right);
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}
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static inline bool uid_lt(kuid_t left, kuid_t right)
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{
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return __kuid_val(left) < __kuid_val(right);
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}
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static inline bool gid_lt(kgid_t left, kgid_t right)
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{
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return __kgid_val(left) < __kgid_val(right);
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}
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static inline bool uid_lte(kuid_t left, kuid_t right)
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{
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return __kuid_val(left) <= __kuid_val(right);
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}
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static inline bool gid_lte(kgid_t left, kgid_t right)
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{
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return __kgid_val(left) <= __kgid_val(right);
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}
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static inline bool uid_valid(kuid_t uid)
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{
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return __kuid_val(uid) != (uid_t) -1;
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}
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static inline bool gid_valid(kgid_t gid)
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{
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return __kgid_val(gid) != (gid_t) -1;
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}
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#ifdef CONFIG_USER_NS
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extern kuid_t make_kuid(struct user_namespace *from, uid_t uid);
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extern kgid_t make_kgid(struct user_namespace *from, gid_t gid);
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extern uid_t from_kuid(struct user_namespace *to, kuid_t uid);
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extern gid_t from_kgid(struct user_namespace *to, kgid_t gid);
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extern uid_t from_kuid_munged(struct user_namespace *to, kuid_t uid);
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extern gid_t from_kgid_munged(struct user_namespace *to, kgid_t gid);
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static inline bool kuid_has_mapping(struct user_namespace *ns, kuid_t uid)
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{
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return from_kuid(ns, uid) != (uid_t) -1;
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}
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static inline bool kgid_has_mapping(struct user_namespace *ns, kgid_t gid)
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{
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return from_kgid(ns, gid) != (gid_t) -1;
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}
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u32 map_id_down(struct uid_gid_map *map, u32 id);
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u32 map_id_up(struct uid_gid_map *map, u32 id);
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#else
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static inline kuid_t make_kuid(struct user_namespace *from, uid_t uid)
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{
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return KUIDT_INIT(uid);
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}
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static inline kgid_t make_kgid(struct user_namespace *from, gid_t gid)
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{
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return KGIDT_INIT(gid);
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}
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static inline uid_t from_kuid(struct user_namespace *to, kuid_t kuid)
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{
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return __kuid_val(kuid);
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}
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static inline gid_t from_kgid(struct user_namespace *to, kgid_t kgid)
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{
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return __kgid_val(kgid);
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}
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static inline uid_t from_kuid_munged(struct user_namespace *to, kuid_t kuid)
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{
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uid_t uid = from_kuid(to, kuid);
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if (uid == (uid_t)-1)
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uid = overflowuid;
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return uid;
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}
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static inline gid_t from_kgid_munged(struct user_namespace *to, kgid_t kgid)
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{
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gid_t gid = from_kgid(to, kgid);
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if (gid == (gid_t)-1)
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gid = overflowgid;
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return gid;
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}
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static inline bool kuid_has_mapping(struct user_namespace *ns, kuid_t uid)
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{
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return uid_valid(uid);
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}
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static inline bool kgid_has_mapping(struct user_namespace *ns, kgid_t gid)
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{
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return gid_valid(gid);
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}
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static inline u32 map_id_down(struct uid_gid_map *map, u32 id)
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{
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return id;
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}
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static inline u32 map_id_up(struct uid_gid_map *map, u32 id)
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{
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return id;
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}
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#endif /* CONFIG_USER_NS */
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#endif /* _LINUX_UIDGID_H */
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