diff options
| -rw-r--r-- | kernel/time/posix-clock.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index 04498cbf600..25028dd4fa1 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -287,11 +287,16 @@ static int pc_clock_adjtime(clockid_t id, struct timex *tx) if (err) return err; + if ((cd.fp->f_mode & FMODE_WRITE) == 0) { + err = -EACCES; + goto out; + } + if (cd.clk->ops.clock_adjtime) err = cd.clk->ops.clock_adjtime(cd.clk, tx); else err = -EOPNOTSUPP; - +out: put_clock_desc(&cd); return err; @@ -344,11 +349,16 @@ static int pc_clock_settime(clockid_t id, const struct timespec *ts) if (err) return err; + if ((cd.fp->f_mode & FMODE_WRITE) == 0) { + err = -EACCES; + goto out; + } + if (cd.clk->ops.clock_settime) err = cd.clk->ops.clock_settime(cd.clk, ts); else err = -EOPNOTSUPP; - +out: put_clock_desc(&cd); return err; |