diff options
Diffstat (limited to 'lib/kernel/src/ram_file.erl')
| -rw-r--r-- | lib/kernel/src/ram_file.erl | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/kernel/src/ram_file.erl b/lib/kernel/src/ram_file.erl index 48ea871433..ca881ff8a4 100644 --- a/lib/kernel/src/ram_file.erl +++ b/lib/kernel/src/ram_file.erl @@ -29,6 +29,7 @@ %% Specialized file operations -export([get_size/1, get_file/1, set_file/2, get_file_close/1]). -export([compress/1, uncompress/1, uuencode/1, uudecode/1, advise/4]). +-export([allocate/3]). -export([open_mode/1]). %% used by ftp-file @@ -72,6 +73,7 @@ -define(RAM_FILE_UUDECODE, 36). -define(RAM_FILE_SIZE, 37). -define(RAM_FILE_ADVISE, 38). +-define(RAM_FILE_ALLOCATE, 39). %% Open modes for RAM_FILE_OPEN -define(RAM_FILE_MODE_READ, 1). @@ -383,6 +385,11 @@ advise(#file_descriptor{module = ?MODULE, data = Port}, Offset, advise(#file_descriptor{}, _Offset, _Length, _Advise) -> {error, enotsup}. +allocate(#file_descriptor{module = ?MODULE, data = Port}, Offset, Length) -> + call_port(Port, <<?RAM_FILE_ALLOCATE, Offset:64/signed, Length:64/signed>>); +allocate(#file_descriptor{}, _Offset, _Length) -> + {error, enotsup}. + %%%----------------------------------------------------------------- |