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author | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
commit | a54bfa40fd16aeb90bc556189221576f746f8567 (patch) | |
tree | 176bb7a99ffab5f42f0dd4e9671f335be3f3efa0 /arch/microblaze/lib/uaccess.c | |
parent | fe957c40ec5e2763b9977c565beab3bde3aaf85b (diff) | |
parent | 134ffb4cad92a6aa534e55a9be145bca780a32c1 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'arch/microblaze/lib/uaccess.c')
-rw-r--r-- | arch/microblaze/lib/uaccess.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/microblaze/lib/uaccess.c b/arch/microblaze/lib/uaccess.c new file mode 100644 index 00000000000..8eb9df5a26c --- /dev/null +++ b/arch/microblaze/lib/uaccess.c @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/string.h> +#include <asm/uaccess.h> + +#include <asm/bug.h> + +long strnlen_user(const char __user *src, long count) +{ + return strlen(src) + 1; +} + +#define __do_strncpy_from_user(dst, src, count, res) \ + do { \ + char *tmp; \ + strncpy(dst, src, count); \ + for (tmp = dst; *tmp && count > 0; tmp++, count--) \ + ; \ + res = (tmp - dst); \ + } while (0) + +long __strncpy_from_user(char *dst, const char __user *src, long count) +{ + long res; + __do_strncpy_from_user(dst, src, count, res); + return res; +} + +long strncpy_from_user(char *dst, const char __user *src, long count) +{ + long res = -EFAULT; + if (access_ok(VERIFY_READ, src, 1)) + __do_strncpy_from_user(dst, src, count, res); + return res; +} |