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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-09-29 02:00:57 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 09:18:18 -0700
commitde2a84f2be8ed8a166f13d6aa2ae474541172bb2 (patch)
tree1c6e236c8fb87ec37d4e7cce126e42361156e471
parent074a5dde04abc66eea30368c74913d83b1a410f9 (diff)
[PATCH] solaris emulation: incorrect tty locking
[akpm@osdl.org: build fix] [akpm@osdl.org: warning fix] Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/sparc64/solaris/misc.c3
-rw-r--r--drivers/char/tty_io.c1
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc64/solaris/misc.c b/arch/sparc64/solaris/misc.c
index 642541769a1..9c581328e76 100644
--- a/arch/sparc64/solaris/misc.c
+++ b/arch/sparc64/solaris/misc.c
@@ -11,6 +11,7 @@
#include <linux/limits.h>
#include <linux/mm.h>
#include <linux/smp.h>
+#include <linux/tty.h>
#include <linux/mman.h>
#include <linux/file.h>
#include <linux/timex.h>
@@ -422,7 +423,9 @@ asmlinkage int solaris_procids(int cmd, s32 pid, s32 pgid)
Solaris setpgrp and setsid? */
ret = sys_setpgid(0, 0);
if (ret) return ret;
+ mutex_lock(&tty_mutex);
current->signal->tty = NULL;
+ mutex_unlock(&tty_mutex);
return process_group(current);
}
case 2: /* getsid */
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 142427c6e8f..48b59006afc 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -129,6 +129,7 @@ LIST_HEAD(tty_drivers); /* linked list of tty drivers */
/* Semaphore to protect creating and releasing a tty. This is shared with
vt.c for deeply disgusting hack reasons */
DEFINE_MUTEX(tty_mutex);
+EXPORT_SYMBOL(tty_mutex);
#ifdef CONFIG_UNIX98_PTYS
extern struct tty_driver *ptm_driver; /* Unix98 pty masters; for /dev/ptmx */