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Subject[PATCH] [2.4.20-pre1] Watchdog Stuff (3/4)
	The third patch, fixing drivers that don't use get_user in their
magicclose code.

Joel

diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/advantechwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/advantechwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/advantechwdt.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/advantechwdt.c Wed Aug 7 15:40:06 2002
@@ -125,7 +125,10 @@
adv_expect_close = 0;

for (i = 0; i != count; i++) {
- if (buf[i] == 'V')
+ char c;
+ if (get_user(c, buf + i))
+ return -EFAULT;
+ if (c == 'V')
adv_expect_close = 42;
}
}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/alim7101_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/alim7101_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/alim7101_wdt.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/alim7101_wdt.c Wed Aug 7 15:40:06 2002
@@ -174,9 +174,13 @@
wdt_expect_close = 0;

/* now scan */
- for(ofs = 0; ofs != count; ofs++)
- if(buf[ofs] == 'V')
+ for(ofs = 0; ofs != count; ofs++) {
+ char c;
+ if(get_user(c, buf + ofs))
+ return -EFAULT;
+ if(c == 'V')
wdt_expect_close = 1;
+ }
}

/* someone wrote to us, we should restart timer */
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/eurotechwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/eurotechwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/eurotechwdt.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/eurotechwdt.c Wed Aug 7 15:40:06 2002
@@ -237,7 +237,10 @@
eur_expect_close = 0;

for (i = 0; i != count; i++) {
- if (buf[i] == 'V')
+ char c;
+ if (get_user(c, buf + i))
+ return -EFAULT;
+ if (c == 'V')
eur_expect_close = 42;
}
}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/machzwd.c linux-2.4.20-pre1-magicclose-fix/drivers/char/machzwd.c
--- linux-2.4.20-pre1-nowayout/drivers/char/machzwd.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/machzwd.c Wed Aug 7 15:40:06 2002
@@ -329,7 +329,10 @@

/* now scan */
for(ofs = 0; ofs != count; ofs++){
- if(buf[ofs] == 'V'){
+ char c;
+ if(get_user(c, buf + ofs))
+ return -EFAULT;
+ if(c == 'V'){
zf_expect_close = 1;
dprintk("zf_expect_close 1\n");
}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/sc1200wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/sc1200wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/sc1200wdt.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/sc1200wdt.c Wed Aug 7 15:40:06 2002
@@ -263,7 +263,10 @@

for (i = 0; i != len; i++)
{
- if (data[i] == 'V')
+ char c;
+ if (get_user(c, data + i))
+ return -EFAULT;
+ if (c == 'V')
expect_close = 42;
}
}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/sc520_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/sc520_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/sc520_wdt.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/sc520_wdt.c Wed Aug 7 15:40:06 2002
@@ -210,9 +210,13 @@
wdt_expect_close = 0;

/* now scan */
- for(ofs = 0; ofs != count; ofs++)
- if(buf[ofs] == 'V')
+ for(ofs = 0; ofs != count; ofs++) {
+ char c;
+ if (get_user(c, buf + ofs))
+ return -EFAULT;
+ if(c == 'V')
wdt_expect_close = 1;
+ }

/* Well, anyhow someone wrote to us, we should return that favour */
next_heartbeat = jiffies + WDT_HEARTBEAT;
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/shwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/shwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/shwdt.c Fri Aug 2 17:39:43 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/shwdt.c Wed Aug 7 15:40:06 2002
@@ -237,7 +237,10 @@
shwdt_expect_close = 0;

for (i = 0; i != count; i++) {
- if (buf[i] == 'V')
+ char c;
+ if (get_user(c, buf + i))
+ return -EFAULT;
+ if (c == 'V')
shwdt_expect_close = 42;
}
next_heartbeat = jiffies + (sh_heartbeat * HZ);
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/w83877f_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/w83877f_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/w83877f_wdt.c Fri Aug 2 17:39:43 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/w83877f_wdt.c Wed Aug 7 15:40:06 2002
@@ -192,8 +192,13 @@

/* now scan */
for(ofs = 0; ofs != count; ofs++)
- if(buf[ofs] == 'V')
+ {
+ char c;
+ if(get_user(c, buf + ofs))
+ return -EFAULT;
+ if(c == 'V')
wdt_expect_close = 1;
+ }

/* someone wrote to us, we should restart timer */
next_heartbeat = jiffies + WDT_HEARTBEAT;
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/wdt_pci.c linux-2.4.20-pre1-magicclose-fix/drivers/char/wdt_pci.c
--- linux-2.4.20-pre1-nowayout/drivers/char/wdt_pci.c Wed Aug 7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/wdt_pci.c Wed Aug 7 15:40:06 2002
@@ -247,7 +247,10 @@
expect_close = 0;

for (i = 0; i != count; i++) {
- if (buf[i] == 'V')
+ char c;
+ if (get_user(c, buf + i))
+ return -EFAULT;
+ if (c == 'V')
expect_close = 1;
}
}
--

Life's Little Instruction Book #20

"Be forgiving of yourself and others."

Joel Becker
Senior Member of Technical Staff
Oracle Corporation
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
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