From ddf5b79683713d343d3b2cb2b4e5ac492f9304a8 Mon Sep 17 00:00:00 2001
From: Dima Dorfman
Date: Tue, 5 Jun 2001 05:07:53 +0000
Subject: [PATCH] Add a line discipline close routine which restores some
functionality I accidently nuked in rev. 1.54. Also rework the error
handling in snplwrite a little.
---
sys/dev/snp/snp.c | 26 +++++++++++++++++++++-----
sys/kern/tty_snoop.c | 26 +++++++++++++++++++++-----
2 files changed, 42 insertions(+), 10 deletions(-)
diff --git a/sys/dev/snp/snp.c b/sys/dev/snp/snp.c
index 9755ef73ab9..3a8e57651d2 100644
--- a/sys/dev/snp/snp.c
+++ b/sys/dev/snp/snp.c
@@ -26,6 +26,7 @@
#include
#include
+static l_close_t snplclose;
static l_write_t snplwrite;
static d_open_t snpopen;
static d_close_t snpclose;
@@ -52,7 +53,7 @@ static struct cdevsw snp_cdevsw = {
};
static struct linesw snpdisc = {
- ttyopen, ttylclose, ttread, snplwrite,
+ ttyopen, snplclose, ttread, snplwrite,
l_nullioctl, ttyinput, ttstart, ttymodem
};
@@ -71,6 +72,22 @@ static int snp_down __P((struct snoop *snp));
static int snp_in __P((struct snoop *snp, char *buf, int n));
static int snp_modevent __P((module_t mod, int what, void *arg));
+static int
+snplclose(tp, flag)
+ struct tty *tp;
+ int flag;
+{
+ struct snoop *snp;
+ int error;
+
+ snp = tp->t_sc;
+ error = snp_down(snp);
+ if (error != 0)
+ return (error);
+ error = ttylclose(tp, flag);
+ return (error);
+}
+
static int
snplwrite(tp, uio, flag)
struct tty *tp;
@@ -84,12 +101,11 @@ snplwrite(tp, uio, flag)
char ibuf[512];
snp = tp->t_sc;
- error = 0;
while (uio->uio_resid > 0) {
ilen = imin(sizeof(ibuf), uio->uio_resid);
error = uiomove(ibuf, ilen, uio);
if (error != 0)
- break;
+ return (error);
snp_in(snp, ibuf, ilen);
/* Hackish, but probably the least of all evils. */
iov.iov_base = ibuf;
@@ -103,9 +119,9 @@ snplwrite(tp, uio, flag)
uio2.uio_procp = uio->uio_procp;
error = ttwrite(tp, &uio2, flag);
if (error != 0)
- break;
+ return (error);
}
- return (error);
+ return (0);
}
static struct tty *
diff --git a/sys/kern/tty_snoop.c b/sys/kern/tty_snoop.c
index 9755ef73ab9..3a8e57651d2 100644
--- a/sys/kern/tty_snoop.c
+++ b/sys/kern/tty_snoop.c
@@ -26,6 +26,7 @@
#include
#include
+static l_close_t snplclose;
static l_write_t snplwrite;
static d_open_t snpopen;
static d_close_t snpclose;
@@ -52,7 +53,7 @@ static struct cdevsw snp_cdevsw = {
};
static struct linesw snpdisc = {
- ttyopen, ttylclose, ttread, snplwrite,
+ ttyopen, snplclose, ttread, snplwrite,
l_nullioctl, ttyinput, ttstart, ttymodem
};
@@ -71,6 +72,22 @@ static int snp_down __P((struct snoop *snp));
static int snp_in __P((struct snoop *snp, char *buf, int n));
static int snp_modevent __P((module_t mod, int what, void *arg));
+static int
+snplclose(tp, flag)
+ struct tty *tp;
+ int flag;
+{
+ struct snoop *snp;
+ int error;
+
+ snp = tp->t_sc;
+ error = snp_down(snp);
+ if (error != 0)
+ return (error);
+ error = ttylclose(tp, flag);
+ return (error);
+}
+
static int
snplwrite(tp, uio, flag)
struct tty *tp;
@@ -84,12 +101,11 @@ snplwrite(tp, uio, flag)
char ibuf[512];
snp = tp->t_sc;
- error = 0;
while (uio->uio_resid > 0) {
ilen = imin(sizeof(ibuf), uio->uio_resid);
error = uiomove(ibuf, ilen, uio);
if (error != 0)
- break;
+ return (error);
snp_in(snp, ibuf, ilen);
/* Hackish, but probably the least of all evils. */
iov.iov_base = ibuf;
@@ -103,9 +119,9 @@ snplwrite(tp, uio, flag)
uio2.uio_procp = uio->uio_procp;
error = ttwrite(tp, &uio2, flag);
if (error != 0)
- break;
+ return (error);
}
- return (error);
+ return (0);
}
static struct tty *