78d707cd26
The VM server now manages its call masks such that all user processes share the same call mask. As a result, an update for the call mask of any user process will apply to all user processes. This is similar to the privilege infrastructure employed by the kernel, and may serve as a template for similar fine-grained restrictions in other servers. Concretely, this patch fixes the problem of "service edit init" not applying the given VM call mask to user processes started from RC scripts during system startup. In addition, this patch makes RS set a proper VM call mask for each recovery script it spawns. Change-Id: I520a30d85a0d3f3502d2b158293a2258825358cf
86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/* Prototypes and definitions for VM interface. */
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#ifndef _MINIX_VM_H
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#define _MINIX_VM_H
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#include <sys/types.h>
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#include <minix/endpoint.h>
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int vm_exit(endpoint_t ep);
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int vm_fork(endpoint_t ep, int slotno, endpoint_t *child_ep);
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int vm_brk(endpoint_t ep, char *newaddr);
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int vm_willexit(endpoint_t ep);
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int vm_adddma(endpoint_t proc_e, phys_bytes start, phys_bytes size);
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int vm_deldma(endpoint_t proc_e, phys_bytes start, phys_bytes size);
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int vm_getdma(endpoint_t *procp, phys_bytes *basep, phys_bytes *sizep);
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void *vm_map_phys(endpoint_t who, void *physaddr, size_t len);
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int vm_unmap_phys(endpoint_t who, void *vaddr, size_t len);
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int vm_notify_sig(endpoint_t ep, endpoint_t ipc_ep);
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int vm_set_priv(endpoint_t ep, void *buf, int sys_proc);
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int vm_update(endpoint_t src_e, endpoint_t dst_e);
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int vm_memctl(endpoint_t ep, int req);
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int vm_query_exit(endpoint_t *endpt);
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int vm_watch_exit(endpoint_t ep);
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int vm_forgetblock(u64_t id);
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void vm_forgetblocks(void);
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int minix_vfs_mmap(endpoint_t who, u32_t offset, u32_t len,
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u32_t dev, u32_t ino, u16_t fd, u32_t vaddr, u16_t clearend, u16_t
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flags);
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/* minix vfs mmap flags */
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#define MVM_LENMASK 0x0FFF
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#define MVM_FLAGSMASK 0xF000
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#define MVM_WRITABLE 0x8000
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/* VM kernel request types. */
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#define VMPTYPE_NONE 0
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#define VMPTYPE_CHECK 1
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struct vm_stats_info {
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unsigned int vsi_pagesize; /* page size */
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unsigned long vsi_total; /* total number of memory pages */
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unsigned long vsi_free; /* number of free pages */
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unsigned long vsi_largest; /* largest number of consecutive free pages */
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unsigned long vsi_cached; /* number of pages cached for file systems */
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};
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struct vm_usage_info {
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vir_bytes vui_total; /* total amount of process memory */
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vir_bytes vui_common; /* part of memory mapped in more than once */
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vir_bytes vui_shared; /* shared (non-COW) part of common memory */
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};
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struct vm_region_info {
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vir_bytes vri_addr; /* base address of region */
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vir_bytes vri_length; /* length of region */
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int vri_prot; /* protection flags (PROT_) */
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int vri_flags; /* memory flags (subset of MAP_) */
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};
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#define MAX_VRI_COUNT 64 /* max. number of regions provided at once */
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int vm_info_stats(struct vm_stats_info *vfi);
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int vm_info_usage(endpoint_t who, struct vm_usage_info *vui);
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int vm_info_region(endpoint_t who, struct vm_region_info *vri, int
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count, vir_bytes *next);
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int vm_procctl(endpoint_t ep, int param);
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int vm_set_cacheblock(void *block, u32_t dev, u64_t dev_offset,
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u64_t ino, u64_t ino_offset, u32_t *flags, int blocksize);
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void *vm_map_cacheblock(u32_t dev, u64_t dev_offset,
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u64_t ino, u64_t ino_offset, u32_t *flags, int blocksize);
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/* flags for vm cache functions */
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#define VMMC_FLAGS_LOCKED 0x01 /* someone is updating the flags; don't read/write */
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#define VMMC_DIRTY 0x02 /* dirty buffer and it may not be evicted */
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#define VMMC_EVICTED 0x04 /* VM has evicted the buffer and it's invalid */
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#define VMMC_BLOCK_LOCKED 0x08 /* client is using it and it may not be evicted */
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/* special inode number for vm cache functions */
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#define VMC_NO_INODE 0 /* to reference a disk block, no associated file */
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#endif /* _MINIX_VM_H */
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