lkml.org 
[lkml]   [2005]   [Jan]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH][3/4] let's kill verify_area - convert kernel/compat.c to access_ok()

Here's a patch to convert verify_area to access_ok in kernel/compat.c

diff -up linux-2.6.10-bk9-orig/kernel/compat.c linux-2.6.10-bk9/kernel/compat.c
--- linux-2.6.10-bk9-orig/kernel/compat.c 2005-01-06 22:19:13.000000000 +0100
+++ linux-2.6.10-bk9/kernel/compat.c 2005-01-07 02:06:00.000000000 +0100
@@ -26,16 +26,16 @@

int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
{
- return (verify_area(VERIFY_READ, cts, sizeof(*cts)) ||
+ return (access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
__get_user(ts->tv_sec, &cts->tv_sec) ||
- __get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
+ __get_user(ts->tv_nsec, &cts->tv_nsec)) ? 0 : -EFAULT;
}

int put_compat_timespec(const struct timespec *ts, struct compat_timespec __user *cts)
{
- return (verify_area(VERIFY_WRITE, cts, sizeof(*cts)) ||
+ return (access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
__put_user(ts->tv_sec, &cts->tv_sec) ||
- __put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
+ __put_user(ts->tv_nsec, &cts->tv_nsec)) ? 0 : EFAULT;
}

static long compat_nanosleep_restart(struct restart_block *restart)
@@ -612,7 +612,7 @@ long compat_get_bitmap(unsigned long *ma
/* align bitmap up to nearest compat_long_t boundary */
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);

- if (verify_area(VERIFY_READ, umask, bitmap_size / 8))
+ if (!access_ok(VERIFY_READ, umask, bitmap_size / 8) != 0)
return -EFAULT;

nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
@@ -653,7 +653,7 @@ long compat_put_bitmap(compat_ulong_t __
/* align bitmap up to nearest compat_long_t boundary */
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);

- if (verify_area(VERIFY_WRITE, umask, bitmap_size / 8))
+ if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8) != 0)
return -EFAULT;

nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:09    [from the cache]
©2003-2011 Jasper Spaans