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kernel: vmm_changemmuflags cred check

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Matheus
2024-08-30 21:22:17 -03:00
parent 3c8308533a
commit 0f18341674
3 changed files with 69 additions and 16 deletions
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kernel-src/sys/syscalls/mprotect.c
+3 -1
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@@ -27,12 +27,14 @@ syscallret_t syscall_mprotect(context_t *context, void *address, size_t len, int
mmuflags_t mmuflags = ARCH_MMU_FLAGS_USER;
if (prot & PROT_READ)
mmuflags |= ARCH_MMU_FLAGS_READ;
if (prot & PROT_WRITE)
mmuflags |= ARCH_MMU_FLAGS_WRITE;
if ((prot & PROT_EXEC) == 0)
mmuflags |= ARCH_MMU_FLAGS_NOEXEC;
ret.errno = vmm_changemmuflags(address, len, mmuflags, 0) ? 0 : ENOMEM;
ret.errno = vmm_changemmuflags(address, len, mmuflags, VMM_FLAGS_CREDCHECK);
ret.ret = ret.errno ? -1 : 0;
return ret;