Module linux 

Available on Linux and Unix and crate feature pool only.

The Linux syscalls behind the file store.

Constants

OPEN_NAMED_ATTEMPTS 🔒

Names the unlinked fallback file tries before EEXIST fails the open.

Functions

available_bytes 🔒

Bytes available to unprivileged writers on the volume holding path.

c_path 🔒

Converts path to the NUL-terminated form libc expects. Fails with InvalidInput if path contains an interior NUL.

drop_cache 🔒

Drops the clean pages of [offset, offset + len) from the page cache.

fallocate 🔒

Allocates blocks for [offset, offset + len).

fallocate_mode 🔒

is_memory_backed 🔒

Whether path is on tmpfs or ramfs.

off_t 🔒

Converts a file offset to off_t. Fails with EFBIG if it does not fit, the error the kernel reports for an offset past the file size limit.

open_anonymous 🔒

Opens a nameless read-write file in dir, close-on-exec, with O_DIRECT if direct.

pread 🔒

One pread into buf at offset.

punch_hole 🔒

Deallocates the blocks of [offset, offset + len), keeping the file size.

pwrite 🔒

One pwrite of buf at offset.

tmpfile_fault 🔒

The injected failure of the next O_TMPFILE open, if any.

writeback_and_drop 🔒

Writes back [offset, offset + len) synchronously and drops it from the page cache.