Messages in this thread | | | Date | Fri, 7 Nov 2014 11:28:17 -0500 | Subject | Re: [PATCH v5 2/7] vfs: Define new syscalls preadv2,pwritev2 | From | Milosz Tanski <> |
| |
On Thu, Nov 6, 2014 at 6:25 PM, Jeff Moyer <jmoyer@redhat.com> wrote: > Milosz Tanski <milosz@adfin.com> writes: > >> New syscalls that take an flag argument. This change does not add any specific >> flags. >> >> Signed-off-by: Milosz Tanski <milosz@adfin.com> >> Reviewed-by: Christoph Hellwig <hch@lst.de> >> --- >> fs/read_write.c | 176 ++++++++++++++++++++++++++++++-------- >> include/linux/compat.h | 6 ++ >> include/linux/syscalls.h | 6 ++ >> include/uapi/asm-generic/unistd.h | 6 +- >> mm/filemap.c | 5 +- >> 5 files changed, 158 insertions(+), 41 deletions(-) >> >> diff --git a/fs/read_write.c b/fs/read_write.c >> index 94b2d34..907735c 100644 >> --- a/fs/read_write.c >> +++ b/fs/read_write.c >> @@ -866,6 +866,8 @@ ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, >> return -EBADF; >> if (!(file->f_mode & FMODE_CAN_READ)) >> return -EINVAL; >> + if (flags & ~0) >> + return -EINVAL; >> >> return do_readv_writev(READ, file, vec, vlen, pos, flags); >> } >> @@ -879,21 +881,23 @@ ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, >> return -EBADF; >> if (!(file->f_mode & FMODE_CAN_WRITE)) >> return -EINVAL; >> + if (flags & ~0) >> + return -EINVAL; >> >> return do_readv_writev(WRITE, file, vec, vlen, pos, flags); >> } > > Hi, Milosz, > > You've checked for invalid flags for the normal system calls, but not > for the compat variants. Can you add that in, please? > > Thanks! > Jeff
That's a good catch Jeff I'll fix this and it'll be in the next version of the patch series.
- M
-- Milosz Tanski CTO 16 East 34th Street, 15th floor New York, NY 10016
p: 646-253-9055 e: milosz@adfin.com
| |