diff options
| -rw-r--r-- | hurd/hurd_types.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/hurd/hurd_types.h b/hurd/hurd_types.h index b42009fd..385c2585 100644 --- a/hurd/hurd_types.h +++ b/hurd/hurd_types.h @@ -157,6 +157,8 @@ enum file_storage_class STORAGE_HURD_FILE, STORAGE_HURD_FILE_MUTATED, STORAGE_NETWORK, + STORAGE_MEMORY, + STORAGE_MEMORY_MUTATED, }; /* STORAGE_DEVICE implies that: @@ -169,7 +171,7 @@ enum file_storage_class The even members of ADDRESSES specify the physical addresses of the data of the file, in order (in units appropriate as a RECNUM to device_read/write) . The odd members specify the lengths (in - bytes) of the storage at the preceding address. An address of zero + bytes) of the storage at the preceding address. An address of -1 identifies a hole, a length of zero should be ignored along with the preceding address. @@ -190,16 +192,22 @@ enum file_storage_class ADDRESSES are pairs of address pairs; the even numbers are off_t offsets from the start of the file and the odd numbers are the - length of the segment. Zero addresses are holes; zero lengths + length of the segment. -1 addresses are holes; zero lengths should be ignored. STORAGE_MISC may contain additional type-specific information. */ -/* STORAGE_HURD_FILE_MUTATED is like STORAGE_DEVICE, except that the +/* STORAGE_HURD_FILE_MUTATED is like STORAGE_HURD_FILE, except that the data as written to STORAGE_PORT/NAME may be different (because of compression, for example) than the contents of the file. */ +/* STORAGE_MEMORY is like STORAGE_HURD_FILE, except that the data is found + in the virtual address space of the task identified by STORAGE_PORT. + +/* STORAGE_MEMORY_MUTATED is like STORAGE_MEMORY, except that the data + may be mutated in storage. */ + /* STORAGE_NETWORK means that the file is stored elsewhere on the network; all the remaining fields contan type-specific information. */ |