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hfsplus: honor setgid flag on directories

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When creating a file inside a directory that has the setgid flag set, give
the new file the group ID of the parent, and also the setgid flag if it is
a directory itself.

Link: http://lkml.kernel.org/r/20171204192705.GA6101@debian.home
Signed-off-by: Ernesto A. Fernandez <ernesto.mnd.fernandez@gmail.com>
Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ernesto A. Fernandez 2018-02-06 15:49:02 -08:00 committed by Linus Torvalds
parent fb04b91bc2
commit b0cd38c7f5
4 changed files with 8 additions and 8 deletions
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4
fs/hfsplus/dir.c
View File

@ -444,7 +444,7 @@ static int hfsplus_symlink(struct inode *dir, struct dentry *dentry,
int res = -ENOMEM;
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, S_IFLNK | S_IRWXUGO);
inode = hfsplus_new_inode(dir->i_sb, dir, S_IFLNK | S_IRWXUGO);
if (!inode)
goto out;
@ -486,7 +486,7 @@ static int hfsplus_mknod(struct inode *dir, struct dentry *dentry,
int res = -ENOMEM;
mutex_lock(&sbi->vh_mutex);
inode = hfsplus_new_inode(dir->i_sb, mode);
inode = hfsplus_new_inode(dir->i_sb, dir, mode);
if (!inode)
goto out;

3
fs/hfsplus/hfsplus_fs.h
View File

@ -478,7 +478,8 @@ extern const struct address_space_operations hfsplus_aops;
extern const struct address_space_operations hfsplus_btree_aops;
extern const struct dentry_operations hfsplus_dentry_operations;
struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode);
struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
umode_t mode);
void hfsplus_delete_inode(struct inode *inode);
void hfsplus_inode_read_fork(struct inode *inode,
struct hfsplus_fork_raw *fork);

7
fs/hfsplus/inode.c
View File

@ -354,7 +354,8 @@ static const struct file_operations hfsplus_file_operations = {
.unlocked_ioctl = hfsplus_ioctl,
};
struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir,
umode_t mode)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct inode *inode = new_inode(sb);
@ -364,9 +365,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
return NULL;
inode->i_ino = sbi->next_cnid++;
inode->i_mode = mode;
inode->i_uid = current_fsuid();
inode->i_gid = current_fsgid();
inode_init_owner(inode, dir, mode);
set_nlink(inode, 1);
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);

2
fs/hfsplus/super.c
View File

@ -549,7 +549,7 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi->hidden_dir) {
mutex_lock(&sbi->vh_mutex);
sbi->hidden_dir = hfsplus_new_inode(sb, S_IFDIR);
sbi->hidden_dir = hfsplus_new_inode(sb, root, S_IFDIR);
if (!sbi->hidden_dir) {
mutex_unlock(&sbi->vh_mutex);
err = -ENOMEM;