diff options
| author | Alexandr Andreev <aandreev@openvz.org> | 2007-03-06 02:44:13 -0800 |
|---|---|---|
| committer | Kyle McMartin <kyle@athena.road.mcmartin.ca> | 2007-05-22 22:42:56 -0400 |
| commit | 2c8307f63dd5caaf7ff8ad5118951e559a9ed5c8 (patch) | |
| tree | 2dba2da76dce00fe73374f02ed7c72b1d8b11373 /arch/parisc | |
| parent | 01da41b86f6e5f9a724e20a63f093d77e37d8056 (diff) | |
parisc: sync compat getdents
Add VERIFY_WRITE check in the beginning like compat_sys_getdents() EFAULT on
parisc if put_user() fails.
Signed-off-by: Alexandr Andreev <aandreev@openvz.org>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Grant Grundler <grundler@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/kernel/sys_parisc32.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c index ce3245f87fd..a8ebac4fade 100644 --- a/arch/parisc/kernel/sys_parisc32.c +++ b/arch/parisc/kernel/sys_parisc32.c @@ -350,6 +350,10 @@ sys32_getdents (unsigned int fd, void __user * dirent, unsigned int count) struct getdents32_callback buf; int error; + error = -EFAULT; + if (!access_ok(VERIFY_WRITE, dirent, count)) + goto out; + error = -EBADF; file = fget(fd); if (!file) @@ -366,8 +370,10 @@ sys32_getdents (unsigned int fd, void __user * dirent, unsigned int count) error = buf.error; lastdirent = buf.previous; if (lastdirent) { - put_user(file->f_pos, &lastdirent->d_off); - error = count - buf.count; + if (put_user(file->f_pos, &lastdirent->d_off)) + error = -EFAULT; + else + error = count - buf.count; } out_putf: |