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| author | Diego Nieto Cid <dnietoc@gmail.com> | 2025-09-21 21:23:42 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2025-09-22 00:51:29 +0200 |
| commit | 9ae4d99c1d1e7c9c0977cebb4df9b86fa92cca94 (patch) | |
| tree | 62e1baaaefde974b943755eb8771ad0a2ca182f4 /include/mach | |
| parent | 1269629d90b28a23ef9742645cfaf657ea3165bb (diff) | |
* doc/mach.texi: add a "Memory Limitations" section to document the new interfaces.
* include/mach/gnumach.defs: (vm_set_size_limit) new routine
(vm_get_size_limit) likewise
* kern/task.c: (task_create_kernel) if parent_task is not null copy virtual memory limit
* tests/test-vm.c: (test_vm_limit) add test for the new routines
* vm/vm_map.h: (struct vm_map) new fields size_none, size_cur_limit and size_max_limit
(vm_map_find_entry) add new parameters cur_protection and max_protection
* vm/vm_map.c: (vm_map_setup) initialize new fields
(vm_map_enforce_limit) new function
(vm_map_copy_limits) new function
(vm_map_find_entry) add protection and max_protection parameters.
call limit enforcer function
(vm_map_enter) likewise
(vm_map_copyout) likewise
(vm_map_copyout_page_list) likewise
(vm_map_fork) copy parent limit to the new map and compute and set size_none of the new map
* vm/vm_user.c: (vm_set_size_limit) new function
(vm_get_size_limit) likewise
* xen/grant.c: update call to vm_map_find_entry to pass protection parameters
Message-ID: <0b71f4f89b7cc2b159893a805480d7493d522d60.1758485757.git.dnietoc@gmail.com>
Diffstat (limited to 'include/mach')
| -rw-r--r-- | include/mach/gnumach.defs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/mach/gnumach.defs b/include/mach/gnumach.defs index f13e866b..f5b2f7f2 100644 --- a/include/mach/gnumach.defs +++ b/include/mach/gnumach.defs @@ -223,3 +223,37 @@ simpleroutine thread_set_name( routine thread_get_name( thread : thread_t; out name : kernel_debug_name_t); + +/* + * Set a task virtual memory limit parameters + * + * HOST_PORT must be the privileged host control port + * if the caller desires to increase the current max limit. + * + * On the other hand, if the max limit is being decreased, the + * unprivileged host control port (as returned by mach_host_self()) + * can be provided. + * + * Returns: + * - KERN_SUCCESS + * - KERN_INVALID_TASK + * - KERN_INVALID_HOST + * - KERN_INVALID_ARGUMENT + * * when current_limit > max_limit + * - KERN_NO_ACCESS + * * attempt to increase max limit without providing + * the privileged host control port. + */ +routine vm_set_size_limit( + host_port : mach_port_t; + map : vm_task_t; + current_limit : vm_size_t; + max_limit : vm_size_t); + +/* + * Get a task virtual memory limit parameters + */ +routine vm_get_size_limit( + map : vm_task_t; + out current_limit : vm_size_t; + out max_limit : vm_size_t); |