Move the transient stat case into HostFileRead.test.ts behind a
pass-through fs mock (only one fixture name fails), instead of a
separate module-mocked file.
Refs #9703
Co-Authored-By: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
readSpan added a member's bytes to memberBytesRead only after the whole
range read succeeded, so a read that consumed some bytes and then
failed (for example EIO) charged nothing against the packaged-probe
allowance. Charge the cumulative bytes from readFileHandleRange's
checkpoint as they arrive.
Also cover the transient stat failure that HostFileRead's test named
but never induced: EIO now has its own module-mocked test, and the
original case is renamed for what it checks.
Refs #10443
Refs #9703
Co-Authored-By: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
`isHostFile` folded every stat failure into "not a file", so a library
candidate under a denied directory became a missing library, and an
unprobeable apt release file or package file read as absent.
`probeHostFile` reports ENOENT/ENOTDIR as absent and every other
failure as unknown. Apt release discovery, the package-file check and
the library walk keep those unknowns: a candidate under a directory the
linker cannot search (EACCES) is kept as a last resort and reported
unreadable rather than missing. Any other failure keeps its search
position, since glibc's open_path continues only past ENOENT and EACCES.
Fixes#9703
Squashed from #9722 and rebased onto main. Adapted on rebase: only
EACCES counts as searched past (checked on glibc 2.36, where a looping
symlink candidate ends the search), the probe reuses the domain
LibraryFileProbe type, and a stray comment is dropped.
Co-Authored-By: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
