diff options
Diffstat (limited to 'api/syscall.h')
| -rw-r--r-- | api/syscall.h | 129 |
1 files changed, 52 insertions, 77 deletions
diff --git a/api/syscall.h b/api/syscall.h index 4bb2eb2..1cdc941 100644 --- a/api/syscall.h +++ b/api/syscall.h @@ -38,35 +38,21 @@ struct syscall_generic_objpath objpath_part_t path[]; }; -/* The kernel will return the physical memory address of this untyped object. */ -#define SYSCALL_UNTYPED_ADDRESS 0 -/* The kernel will return the size of this untyped object. */ -#define SYSCALL_UNTYPED_SIZE 1 - -/* If newtype is not a valid JOVE object, the kernel will return EBADARG. - * If the untyped object is too small for this object, the kernel will return ETOOSMALL. - * If the untyped object is too big for this object, the kernel will return ETOOBIG. - * New objects will be initialized with default values. - * */ -#define SYSCALL_UNTYPED_RETYPE 2 -struct syscall_untyped_retype +enum { - uint16_t newtype; + _SYSCALL_UNTYPED_BADCALL = 0, + SYSCALL_UNTYPED_ADDRESS, + SYSCALL_UNTYPED_SIZE, + SYSCALL_UNTYPED_SPLIT, + SYSCALL_UNTYPED_MERGE, + SYSCALL_UNTYPED_RETYPE, }; -/* Splits the tail of the untyped object into another untyped object with [bytes] length. - * If bytes is less than JOVE_UNTYPED_MINSIZE, the kernel will return ETOOSMALL. - * If the syscall message is too small for dest_path, the kernel will return ETOOSMALL. - * If dest_path does not target a JOVE_OBJ_NONE object, the kernel will return EBADOBJ. - * Destination path will be occupied by the untyped object created by the split. - * */ -#define SYSCALL_UNTYPED_SPLIT 3 -/* Follows rules declared above syscall_generic_objpath. - * If dest_path does not target a JOVE_OBJ_UNTYPED object, the kernel will return EBADPATH. - * If the dest untyped object is not adjacent to the target object, the kernel will return EBADOBJ. - * Destination path will be set to JOVE_OBJ_NONE and target untyped will grow to include the object. - * */ -#define SYSCALL_UNTYPED_MERGE 4 +#define SYSCALL_PERM_UNTYPED_ADDRESS JOVE_PERM_READ +#define SYSCALL_PERM_UNTYPED_SIZE JOVE_PERM_READ +#define SYSCALL_PERM_UNTYPED_SPLIT (JOVE_PERM_WRITE | JOVE_PERM_MUTATE) +#define SYSCALL_PERM_UNTYPED_MERGE (JOVE_PERM_WRITE | JOVE_PERM_MUTATE) + struct syscall_untyped_split { size_t bytes; @@ -74,71 +60,56 @@ struct syscall_untyped_split objpath_part_t dest_path[]; }; -/* Follows rules declared above syscall_generic_objpath. - * Returns the object type at path. - * */ -#define SYSCALL_OBJDIR_OBJTYPE 0 +enum +{ + _SYSCALL_OBJDIR_BADCALL = 0, + SYSCALL_OBJDIR_OBJTYPE, +}; -/* - * If virtual_address does not have a page table, the kernel will return ENOMAP. - * If virtual_address already has a mapping, the kernel will return EEXIST. - * Follows the rules defined above syscall_pagedir_map. - * Maps the untyped page frame to the page table at virtual_address with the passed flags bits. - * */ -#define SYSCALL_PAGEDIR_MAP_FRAME 0 +#define SYSCALL_PERM_OBJDIR_OBJTYPE JOVE_PERM_READ + +enum +{ + _SYSCALL_PAGEDIR_NONE = 0, + SYSCALL_PAGEDIR_MAP_FRAME, + SYSCALL_PAGEDIR_MAP_TABLE, + SYSCALL_PAGEDIR_MAP_SHMEM, + SYSCALL_PAGEDIR_UNMAP_FRAME, + SYSCALL_PAGEDIR_UNMAP_TABLE, + SYSCALL_PAGEDIR_UNMAP_SHMEM, +}; + +#define SYSCALL_PERM_PAGEDIR_MAP_FRAME (JOVE_PERM_READ | JOVE_PERM_WRITE) +#define SYSCALL_PERM_PAGEDIR_MAP_TABLE (JOVE_PERM_READ | JOVE_PERM_WRITE) +#define SYSCALL_PERM_PAGEDIR_MAP_SHMEM (JOVE_PERM_READ | JOVE_PERM_WRITE) +#define SYSCALL_PERM_PAGEDIR_UNMAP_FRAME (JOVE_PERM_READ | JOVE_PERM_WRITE) +#define SYSCALL_PERM_PAGEDIR_UNMAP_TABLE (JOVE_PERM_READ | JOVE_PERM_WRITE) +#define SYSCALL_PERM_PAGEDIR_UNMAP_SHMEM (JOVE_PERM_READ | JOVE_PERM_WRITE) -/* If virtual_address already has a page table, the kernel will return EHASMAP. - * Follows the rules defined above syscall_pagedir_map. - * Creates a page table using the untyped object for memory allocation at virtual_address. - * Flags bits are always set to writeable and executable. - * */ -#define SYSCALL_PAGEDIR_MAP_TABLE 1 - -/* If virtual_address is above the JOVE_USER_MEMORY_LIMIT, the kernel will return EBADARG. - * If the message is too small for untyped_path, the kernel will return ETOOSMALL. - * If untyped_path does not point to a valid JOVE_OBJ_UNTYPED, the kernel will return EBADOBJ. - * If the untyped object is not aligned to 0x1000, the kernel will return EALIGN. - * If the untyped object is not sized to 0x1000, the kernel will return EBADSIZE. - * - * */ struct syscall_pagedir_flags { uint8_t writeable : 1; uint8_t executable : 1; uint8_t flg_unused : 6; }; + struct syscall_pagedir_map { - struct syscall_pagedir_flags flags; - uintptr_t virtual_address; + struct syscall_pagedir_flags page_flags; uint16_t untyped_pathlen; + uintptr_t virtual_address; objpath_part_t untyped_path[]; }; -/**If a page frame is present at the virtual address, the kernel will: - * mark the page frame as not present. - * untype the page frame and move it to the none path. - * return 0. - * If a page frame is not present at the virtual address, the kernel will return EEMPTY. - * Follows the rules defined by struct syscall_pagedir_unmap - * */ -#define SYSCALL_PAGEDIR_UNMAP_FRAME 2 - -/**If a page table is present at the virtual address, one of two things will happen: - * If the page table has present entries, the kernel will return EBUSY. - * Otherwise, the kernel will: - * mark the page table as not present. - * untype the page frame and move it to the none path. - * return 0. - * If a page table is not present at the virtual address, the kernel will return EEMPTY. - * Follows the rules defined by the struct syscall_pagedir_unmap - * */ -#define SYSCALL_PAGEDIR_UNMAP_TABLE 3 +struct syscall_pagedir_map_shmem +{ + struct syscall_pagedir_flags page_flags; + uint8_t page_offset; + uint16_t shmem_pathlen; + uintptr_t virtual_address; + objpath_part_t shmem_path[]; +}; -/**If the virtual address is above JOVE_USER_MEMORY_LIMIT, the kernel will return EBADARG. - * If none_pathlen exceeds the length of the message, the kernel will return ETOOBIG. - * If none_path does not point to a JOVE_OBJ_NONE object, the kernel will return EBADOBJ. - * */ struct syscall_pagedir_unmap { uintptr_t virtual_address; @@ -146,6 +117,10 @@ struct syscall_pagedir_unmap objpath_part_t none_path[]; }; -#define SYSCALL_VTT_WRITE 0 +enum +{ + _SYSCALL_VTT_NONE = 0, + SYSCALL_VTT_WRITE +}; #endif |