https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232207
Bug ID: 232207
Summary: sendfile(2) missing some documented ERRORS
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: yaneurab...@gmail.com
- Depending on file capabilities or socket capabilities and whether or not the
kernel was compiled with capabilities, sendfile can return ENOTCAPABLE:
- `sys_sendfile` uses copyinuio in `sendfile(..)` under the covers when reading
in the hdtr structure. copyinuio can fail with EINVAL for the reasons noted in
writev(2):
[EINVAL] The iovcnt argument was less than or equal to 0, or
greater than IOV_MAX.
[EINVAL] One of the iov_len values in the iov array was
negative.
[EINVAL] The sum of the iov_len values in the iov array
overflowed a 32-bit integer.
Furthermore, it uses `kern_writev(..)` when sending the trailers at the end of
the operation, which means it's conditionally subject to the same errors as
writev(2).
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