hdfs::native::hdfsOpenFile [−] [src]

pub unsafe extern fn hdfsOpenFile(fs: *const hdfsFS, path: *const c_char, flags: c_int, bufferSize: c_int, replication: c_short, blocksize: int32_t) -> *const hdfsFile

Open a hdfs file in given mode.

Params

fs - The configured filesystem handle.
file - The file handle.
flags - an | of bits/fcntl.h file flags - supported flags are O_RDONLY, O_WRONLY (meaning create or overwrite i.e., implies O_TRUNCAT), O_WRONLY|O_APPEND. Other flags are generally ignored other than (O_RDWR || (O_EXCL & O_CREAT)) which return NULL and set errno equal ENOTSUP.
bufferSize - Size of buffer for read/write - pass 0 if you want to use the default configured values.
replication Block replication - pass 0 if you want to use the default configured values.
blocksize - Size of block - pass 0 if you want to use the default configured values.

Returns 0 on success, -1 on error. On error, errno will be set appropriately. If the hdfs file was valid, the memory associated with it will be freed at the end of this call, even if there was an I/O error.