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author | Al Viro <viro@zeniv.linux.org.uk> | 2018-06-17 20:15:10 +0200 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-07-12 16:04:28 +0200 |
commit | 183266f26f45a47958afb5c9aa1b3d4651e2eb8c (patch) | |
tree | c420683235aab835020701a456a62cd786a02c68 /fs/file_table.c | |
parent | create_pipe_files(): switch the first allocation to alloc_file_pseudo() (diff) | |
download | linux-183266f26f45a47958afb5c9aa1b3d4651e2eb8c.tar.xz linux-183266f26f45a47958afb5c9aa1b3d4651e2eb8c.zip |
new helper: alloc_file_clone()
alloc_file_clone(old_file, mode, ops): create a new struct file with
->f_path equal to that of old_file. pipe converted.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/file_table.c')
-rw-r--r-- | fs/file_table.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/file_table.c b/fs/file_table.c index 6b3723909342..78b067ddb386 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -211,6 +211,17 @@ struct file *alloc_file_pseudo(struct inode *inode, struct vfsmount *mnt, } EXPORT_SYMBOL(alloc_file_pseudo); +struct file *alloc_file_clone(struct file *base, int flags, + const struct file_operations *fops) +{ + struct file *f = alloc_file(&base->f_path, flags, fops); + if (!IS_ERR(f)) { + path_get(&f->f_path); + f->f_mapping = base->f_mapping; + } + return f; +} + /* the real guts of fput() - releasing the last reference to file */ static void __fput(struct file *file) |