Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: OT: why no file copy() libc/syscall ?? | From | Trond Myklebust <> | Date | 18 Nov 2003 11:25:16 -0500 |
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>>>>> " " == Andi Kleen <ak@suse.de> writes:
>> > That would be buggy because existing users of sendfile don't >> > know about this and would silently only copy part of the file >> > when a signal happens. >> >> That doesn't make sense. There aren't any existing users of >> sendfile to copy files.
> [ignore the mail, it was an stuck mail queue]
> But note that arbitary changes in the signal handling would > affect all users of sendfile, not just those that attempt to > copy files or do other things that should be done in user > space.
That 'change' is already in effect for people who mount their NFS partitions with the "intr" or "soft" flags.
See the return value of generic_file_sendfile(): it already has the read()/write-like semantics of returning number of bytes written if non-zero, or the value of desc.error if not.
Cheers, Trond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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