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Sanitize f_flags helpers

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* pull ACC_MODE to fs.h; we have several copies all over the place
* nightmarish expression calculating f_mode by f_flags deserves a helper
too (OPEN_FMODE(flags))

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2009-12-19 10:15:07 -05:00
parent 482928d59d
commit 5300990c03
6 changed files with 5 additions and 14 deletions
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10
fs/anon_inodes.c
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@@ -89,19 +89,11 @@ struct file *anon_inode_getfile(const char *name,
struct qstr this;
struct path path;
struct file *file;
fmode_t mode;
int error;
if (IS_ERR(anon_inode_inode))
return ERR_PTR(-ENODEV);
switch (flags & O_ACCMODE) {
case O_RDONLY: mode = FMODE_READ; break;
case O_WRONLY: mode = FMODE_WRITE; break;
case O_RDWR: mode = FMODE_READ | FMODE_WRITE; break;
default: return ERR_PTR(-EINVAL);
}
if (fops->owner && !try_module_get(fops->owner))
return ERR_PTR(-ENOENT);
@@ -129,7 +121,7 @@ struct file *anon_inode_getfile(const char *name,
d_instantiate(path.dentry, anon_inode_inode);
error = -ENFILE;
file = alloc_file(&path, mode, fops);
file = alloc_file(&path, OPEN_FMODE(flags), fops);
if (!file)
goto err_dput;
file->f_mapping = anon_inode_inode->i_mapping;