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Diffstat (limited to 'fs/timerfd.c')
-rw-r--r--fs/timerfd.c45
1 files changed, 21 insertions, 24 deletions
diff --git a/fs/timerfd.c b/fs/timerfd.c
index dffeb3795af..d03822bbf19 100644
--- a/fs/timerfd.c
+++ b/fs/timerfd.c
@@ -234,19 +234,17 @@ static const struct file_operations timerfd_fops = {
.llseek = noop_llseek,
};
-static struct file *timerfd_fget(int fd)
+static int timerfd_fget(int fd, struct fd *p)
{
- struct file *file;
-
- file = fget(fd);
- if (!file)
- return ERR_PTR(-EBADF);
- if (file->f_op != &timerfd_fops) {
- fput(file);
- return ERR_PTR(-EINVAL);
+ struct fd f = fdget(fd);
+ if (!f.file)
+ return -EBADF;
+ if (f.file->f_op != &timerfd_fops) {
+ fdput(f);
+ return -EINVAL;
}
-
- return file;
+ *p = f;
+ return 0;
}
SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags)
@@ -284,7 +282,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
const struct itimerspec __user *, utmr,
struct itimerspec __user *, otmr)
{
- struct file *file;
+ struct fd f;
struct timerfd_ctx *ctx;
struct itimerspec ktmr, kotmr;
int ret;
@@ -297,10 +295,10 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
!timespec_valid(&ktmr.it_interval))
return -EINVAL;
- file = timerfd_fget(ufd);
- if (IS_ERR(file))
- return PTR_ERR(file);
- ctx = file->private_data;
+ ret = timerfd_fget(ufd, &f);
+ if (ret)
+ return ret;
+ ctx = f.file->private_data;
timerfd_setup_cancel(ctx, flags);
@@ -334,7 +332,7 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
ret = timerfd_setup(ctx, flags, &ktmr);
spin_unlock_irq(&ctx->wqh.lock);
- fput(file);
+ fdput(f);
if (otmr && copy_to_user(otmr, &kotmr, sizeof(kotmr)))
return -EFAULT;
@@ -343,14 +341,13 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
{
- struct file *file;
+ struct fd f;
struct timerfd_ctx *ctx;
struct itimerspec kotmr;
-
- file = timerfd_fget(ufd);
- if (IS_ERR(file))
- return PTR_ERR(file);
- ctx = file->private_data;
+ int ret = timerfd_fget(ufd, &f);
+ if (ret)
+ return ret;
+ ctx = f.file->private_data;
spin_lock_irq(&ctx->wqh.lock);
if (ctx->expired && ctx->tintv.tv64) {
@@ -362,7 +359,7 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
kotmr.it_value = ktime_to_timespec(timerfd_get_remaining(ctx));
kotmr.it_interval = ktime_to_timespec(ctx->tintv);
spin_unlock_irq(&ctx->wqh.lock);
- fput(file);
+ fdput(f);
return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0;
}