Change type of the prot parameter for kern_vm_mmap() from vm_prot_t to int.
This makes the code to pass whole word of the mmap(2) syscall argument prot to the syscall helper kern_vm_mmap(), which can validate all bits. The change provides temporal fix for sys/vm/mmap_test mmap__bad_arguments, which was broken after r313352. PR: 216976 Reported and tested by: ngie Sponsored by: The FreeBSD Foundation
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=313655
@ -72,7 +72,7 @@ void kmem_init_zero_region(void);
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void kmeminit(void);
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int kern_vm_mmap(struct thread *td, vm_offset_t addr, vm_size_t size,
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vm_prot_t prot, int flags, int fd, off_t pos);
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int prot, int flags, int fd, off_t pos);
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int kern_vm_mprotect(struct thread *td, vm_offset_t addr, vm_size_t size,
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vm_prot_t prot);
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int kern_vm_msync(struct thread *td, vm_offset_t addr, vm_size_t size,
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@ -196,7 +196,7 @@ sys_mmap(struct thread *td, struct mmap_args *uap)
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int
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kern_vm_mmap(struct thread *td, vm_offset_t addr, vm_size_t size,
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vm_prot_t prot, int flags, int fd, off_t pos)
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int prot, int flags, int fd, off_t pos)
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{
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struct file *fp;
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vm_size_t pageoff;
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