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Merge pull request #8 from zhangn1985/sun8i

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fs/file_table: split fget_light
This commit is contained in:
Igor Pečovnik
2019-01-31 09:46:31 +01:00
committed by GitHub
parent 002a60c148 ca925a740a
commit 1d512229ab
3 changed files with 10 additions and 4 deletions
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11
fs/file_table.c
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@@ -322,7 +322,7 @@ EXPORT_SYMBOL(fget_raw);
* The fput_needed flag returned by fget_light should be passed to the
* corresponding fput_light.
*/
struct file *fget_light(unsigned int fd, int *fput_needed)
struct file *__fget_light(unsigned int fd, fmode_t mode, int *fput_needed)
{
struct file *file;
struct files_struct *files = current->files;
@@ -330,13 +330,13 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
*fput_needed = 0;
if (atomic_read(&files->count) == 1) {
file = fcheck_files(files, fd);
if (file && (file->f_mode & FMODE_PATH))
if (file && (file->f_mode & mode))
file = NULL;
} else {
rcu_read_lock();
file = fcheck_files(files, fd);
if (file) {
if (!(file->f_mode & FMODE_PATH) &&
if (!(file->f_mode & mode) &&
atomic_long_inc_not_zero(&file->f_count))
*fput_needed = 1;
else
@@ -349,6 +349,11 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
return file;
}
struct file *fget_light(unsigned int fd, int *fput_needed)
{
return __fget_light(fd, FMODE_PATH, fput_needed);
}
struct file *fget_raw_light(unsigned int fd, int *fput_needed)
{
struct file *file;

2
fs/stat.c
View File

@@ -58,7 +58,7 @@ EXPORT_SYMBOL(vfs_getattr);
int vfs_fstat(unsigned int fd, struct kstat *stat)
{
int fput_needed;
struct file *f = fget_light(fd, &fput_needed);
struct file *f = __fget_light(fd, 0, &fput_needed);
int error = -EBADF;
if (f) {

1
include/linux/file.h
View File

@@ -28,6 +28,7 @@ static inline void fput_light(struct file *file, int fput_needed)
extern struct file *fget(unsigned int fd);
extern struct file *fget_light(unsigned int fd, int *fput_needed);
extern struct file *__fget_light(unsigned int fd, fmode_t mode, int *fput_needed);
extern struct file *fget_raw(unsigned int fd);
extern struct file *fget_raw_light(unsigned int fd, int *fput_needed);
extern void set_close_on_exec(unsigned int fd, int flag);