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* syscalls.cc (readv): Add myfault handler. Don't check repeatedly

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open state of file handler.  Streamline loop.
	(writev): Add myfault handler.
This commit is contained in:
Corinna Vinschen 2011-05-05 18:46:38 +00:00
parent 8ea8474947
commit 23db0a41d8
2 changed files with 30 additions and 35 deletions
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6
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,9 @@
2011-05-05 Corinna Vinschen <corinna@vinschen.de>
* syscalls.cc (readv): Add myfault handler. Don't check repeatedly
open state of file handler. Streamline loop.
(writev): Add myfault handler.
2011-05-05 Christopher Faylor <me.cygwin2011@cgf.cx>
* fhandler.cc (fhandler_base_overlapped::raw_read): Rename from

59
winsup/cygwin/syscalls.cc
View File

@ -962,60 +962,45 @@ readv (int fd, const struct iovec *const iov, const int iovcnt)
{
pthread_testcancel ();
extern int sigcatchers;
const int e = get_errno ();
myfault efault;
if (efault.faulted (EFAULT))
return -1;
ssize_t res = -1;
const int e = get_errno ();
const ssize_t tot = check_iovec_for_read (iov, iovcnt);
cygheap_fdget cfd (fd);
if (cfd < 0)
goto done;
if (tot <= 0)
{
res = tot;
goto done;
}
if ((cfd->get_flags () & O_ACCMODE) == O_WRONLY)
{
set_errno (EBADF);
goto done;
}
/* Could block, so let user know we at least got here. */
extern int sigcatchers;
syscall_printf ("readv (%d, %p, %d) %sblocking, sigcatchers %d",
fd, iov, iovcnt, cfd->is_nonblocking () ? "non" : "",
sigcatchers);
while (1)
{
cygheap_fdget cfd (fd);
if (cfd < 0)
break;
if ((cfd->get_flags () & O_ACCMODE) == O_WRONLY)
{
set_errno (EBADF);
break;
}
/* Could block, so let user know we at least got here. */
syscall_printf ("readv (%d, %p, %d) %sblocking, sigcatchers %d",
fd, iov, iovcnt, cfd->is_nonblocking () ? "non" : "",
sigcatchers);
/* FIXME: This is not thread safe. We need some method to
ensure that an fd, closed in another thread, aborts I/O
operations. */
if (!cfd.isopen ())
break;
/* Check to see if this is a background read from a "tty",
sending a SIGTTIN, if appropriate */
res = cfd->bg_check (SIGTTIN);
if (!cfd.isopen ())
{
res = -1;
break;
}
if (res > bg_eof)
{
myself->process_state |= PID_TTYIN;
if (!cfd.isopen ())
{
res = -1;
break;
}
res = cfd->readv (iov, iovcnt, tot);
myself->process_state &= ~PID_TTYIN;
}
@ -1037,6 +1022,10 @@ writev (const int fd, const struct iovec *const iov, const int iovcnt)
{
pthread_testcancel ();
myfault efault;
if (efault.faulted (EFAULT))
return -1;
int res = -1;
const ssize_t tot = check_iovec_for_write (iov, iovcnt);