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[PATCH] uml: Fix SIGWINCH relaying

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This makes SIGWINCH work again, and fixes a couple of SIGWINCH-associated
crashes.  First, the sigio thread disables SIGWINCH because all hell breaks
loose if it ever gets one and tries to call the signal handling code.  Second,
there was a problem with deferencing tty structs after they were freed.  The
SIGWINCH support for a tty wasn't being turned off or freed after the tty went
away.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike
2005-05-05 16:15:32 -07:00
committed by Linus Torvalds
parent c578455a3e
commit cd2ee4a30c
8 changed files with 55 additions and 7 deletions
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4
arch/um/kernel/tt/tracer.c
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@@ -26,6 +26,7 @@
#include "kern_util.h"
#include "chan_user.h"
#include "ptrace_user.h"
#include "irq_user.h"
#include "mode.h"
#include "tt.h"
@@ -33,7 +34,7 @@ static int tracer_winch[2];
int is_tracer_winch(int pid, int fd, void *data)
{
if(pid != tracing_pid)
if(pid != os_getpgrp())
return(0);
register_winch_irq(tracer_winch[0], fd, -1, data);
@@ -119,6 +120,7 @@ static int signal_tramp(void *arg)
signal(SIGSEGV, (__sighandler_t) sig_handler);
set_cmdline("(idle thread)");
set_init_pid(os_getpid());
init_irq_signals(0);
proc = arg;
return((*proc)(NULL));
}