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* pipe.cc (fhandler_pipe::open): Allow re-opening of /proc/<pid>/fd

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pipes of the current process.
This commit is contained in:
Corinna Vinschen 2005-02-01 16:43:29 +00:00
parent e8309efda5
commit 01a94cf866
2 changed files with 38 additions and 0 deletions
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5
winsup/cygwin/ChangeLog
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@ -1,3 +1,8 @@
2005-02-01 Corinna Vinschen <corinna@vinschen.de>
* pipe.cc (fhandler_pipe::open): Allow re-opening of /proc/<pid>/fd
pipes of the current process.
2005-02-01 Corinna Vinschen <corinna@vinschen.de>
* fhandler.cc (fhandler_base::get_proc_fd_name): Don't generate

33
winsup/cygwin/pipe.cc
View File

@ -38,6 +38,39 @@ fhandler_pipe::fhandler_pipe ()
int
fhandler_pipe::open (int flags, mode_t mode)
{
const char *path = get_name ();
debug_printf ("path: %s", path);
if (!strncmp (get_name (), "/proc/", 6))
{
char *c;
HANDLE hdl;
int pid = strtol (path += 6, &c, 10);
if (!pid || !c || *c != '/')
goto out;
path = c;
if (strncmp (path, "/fd/pipe:[", 10))
goto out;
path += 10;
hdl = (HANDLE) atoi (path);
if (pid == myself->pid)
{
cygheap_fdenum cfd;
while (cfd.next () >= 0)
{
if (cfd->get_handle () == hdl)
{
if (!cfd->dup (this))
return 1;
return 0;
}
}
}
else
{
/* TODO: Open pipes of different process. Is that possible? */
}
}
out:
set_errno (ENXIO);
return 0;
}