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* miscfuncs.cc (check_iovec_for_read): Don't check buffer when zero length

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iov_len.
(check_iovec_for_write): Ditto.
* fhandler.h (fhandler_base::readv): New method.
(fhandler_base::writev): Ditto.
* fhandler.cc (fhandler_base::readv): New method.
(fhandler_base::writev): Ditto.
* syscalls.cc (_read): Delegate to readv(2).
(_write): Ditto, mutatis mutandi.
(readv): Rewrite, based on the old _read code, to use the new
fhandler_base::readv method.  Improve access mode handling and ensure all calls
reach the final strace statement.
(writev): Ditto, mutatis mutandi.
* include/sys/uio.h (struct iovec): Change field types to match SUSv3.
* winsup.h (check_iovec_for_read): New function.
(check_iovec_for_write): Ditto.
* miscfuncs.cc (check_iovec_for_read): Ditto.
(check_iovec_for_write): Ditto.
This commit is contained in:
Christopher Faylor
2002-08-30 15:47:10 +00:00
parent 70c306d781
commit ab7f9b938f
8 changed files with 288 additions and 130 deletions
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9
winsup/cygwin/include/sys/uio.h
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@ -1,6 +1,6 @@
/* sys/uio.h
Copyright 1996, 2000, 2001 Red Hat, Inc.
Copyright 1996, 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
@ -24,9 +24,10 @@ __BEGIN_DECLS
* Define the uio buffers used for writev, readv.
*/
struct iovec {
caddr_t iov_base;
int iov_len;
struct iovec
{
void *iov_base;
size_t iov_len;
};
extern ssize_t readv __P ((int filedes, const struct iovec *vector, int count));