diff options
| author | Ian Moffett <ian@osmora.org> | 2025-09-15 23:41:52 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-09-15 23:41:52 -0400 |
| commit | fe60a37cfe072ec41663a69aefb02816af4067db (patch) | |
| tree | 80e164931cd2e21b2c3b5ff87b233b1b38a81f2d | |
| parent | 06fb71061438ce7c9cf665abcb289221dfa6fca8 (diff) | |
sys: mman: Add PROT_USER flag
Signed-off-by: Ian Moffett <ian@osmora.org>
| -rw-r--r-- | src/sys/arch/amd64/cpu/mmu.c | 2 | ||||
| -rw-r--r-- | src/sys/include/sys/mman.h | 3 | ||||
| -rw-r--r-- | src/sys/include/vm/mmu.h | 1 |
3 files changed, 6 insertions, 0 deletions
diff --git a/src/sys/arch/amd64/cpu/mmu.c b/src/sys/arch/amd64/cpu/mmu.c index 974e7d3..60fb4f1 100644 --- a/src/sys/arch/amd64/cpu/mmu.c +++ b/src/sys/arch/amd64/cpu/mmu.c @@ -97,6 +97,8 @@ prot_to_pte(int prot) pte_flags |= PTE_P; if (ISSET(prot, MMU_PROT_WRITE)) pte_flags |= PTE_RW; + if (ISSET(prot, MMU_PROT_USER)) + pte_flags |= PTE_US; if (ISSET(prot, MMU_PROT_EXEC)) pte_flags &= ~PTE_NX; diff --git a/src/sys/include/sys/mman.h b/src/sys/include/sys/mman.h index 774f152..7ae1ed2 100644 --- a/src/sys/include/sys/mman.h +++ b/src/sys/include/sys/mman.h @@ -35,5 +35,8 @@ #define PROT_READ BIT(0) #define PROT_WRITE BIT(1) #define PROT_EXEC BIT(2) +#if defined(_KERNEL) +#define PROT_USER BIT(3) +#endif /* _KERNEL */ #endif /* !_SYS_MMAN_H_ */ diff --git a/src/sys/include/vm/mmu.h b/src/sys/include/vm/mmu.h index 6749254..5c1c2bb 100644 --- a/src/sys/include/vm/mmu.h +++ b/src/sys/include/vm/mmu.h @@ -48,6 +48,7 @@ #define MMU_PROT_READ PROT_READ /* Readable */ #define MMU_PROT_WRITE PROT_WRITE /* Writable */ #define MMU_PROT_EXEC PROT_EXEC /* Executable */ +#define MMU_PROT_USER PROT_USER /* User visible */ /* * This will represent a virtual to |