new helpers: no_seek_end_llseek{,_size}()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-12-05 22:04:48 -05:00
szülő b808b1d632
commit b25472f9b9
13 fájl változott, egészen pontosan 54 új sor hozzáadva és 222 régi sor törölve

Fájl megtekintése

@@ -58,28 +58,6 @@ static void cpuid_smp_cpuid(void *cmd_block)
&cmd->eax, &cmd->ebx, &cmd->ecx, &cmd->edx);
}
static loff_t cpuid_seek(struct file *file, loff_t offset, int orig)
{
loff_t ret;
struct inode *inode = file->f_mapping->host;
mutex_lock(&inode->i_mutex);
switch (orig) {
case 0:
file->f_pos = offset;
ret = file->f_pos;
break;
case 1:
file->f_pos += offset;
ret = file->f_pos;
break;
default:
ret = -EINVAL;
}
mutex_unlock(&inode->i_mutex);
return ret;
}
static ssize_t cpuid_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -132,7 +110,7 @@ static int cpuid_open(struct inode *inode, struct file *file)
*/
static const struct file_operations cpuid_fops = {
.owner = THIS_MODULE,
.llseek = cpuid_seek,
.llseek = no_seek_end_llseek,
.read = cpuid_read,
.open = cpuid_open,
};

Fájl megtekintése

@@ -45,28 +45,6 @@
static struct class *msr_class;
static loff_t msr_seek(struct file *file, loff_t offset, int orig)
{
loff_t ret;
struct inode *inode = file_inode(file);
mutex_lock(&inode->i_mutex);
switch (orig) {
case SEEK_SET:
file->f_pos = offset;
ret = file->f_pos;
break;
case SEEK_CUR:
file->f_pos += offset;
ret = file->f_pos;
break;
default:
ret = -EINVAL;
}
mutex_unlock(&inode->i_mutex);
return ret;
}
static ssize_t msr_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
@@ -194,7 +172,7 @@ static int msr_open(struct inode *inode, struct file *file)
*/
static const struct file_operations msr_fops = {
.owner = THIS_MODULE,
.llseek = msr_seek,
.llseek = no_seek_end_llseek,
.read = msr_read,
.write = msr_write,
.open = msr_open,