diff options
Diffstat (limited to 'fs/erofs/inode.c')
| -rw-r--r-- | fs/erofs/inode.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index 9a2f59721522..cb780c095d28 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -5,6 +5,7 @@ * Copyright (C) 2021, Alibaba Cloud */ #include "xattr.h" +#include <linux/compat.h> #include <trace/events/erofs.h> static int erofs_fill_symlink(struct inode *inode, void *kaddr, @@ -213,10 +214,7 @@ static int erofs_fill_inode(struct inode *inode) switch (inode->i_mode & S_IFMT) { case S_IFREG: inode->i_op = &erofs_generic_iops; - if (erofs_inode_is_data_compressed(vi->datalayout)) - inode->i_fop = &generic_ro_fops; - else - inode->i_fop = &erofs_file_fops; + inode->i_fop = &erofs_file_fops; break; case S_IFDIR: inode->i_op = &erofs_dir_iops; @@ -341,6 +339,40 @@ int erofs_getattr(struct mnt_idmap *idmap, const struct path *path, return 0; } +static int erofs_ioctl_get_volume_label(struct inode *inode, void __user *arg) +{ + struct erofs_sb_info *sbi = EROFS_I_SB(inode); + int ret; + + if (!sbi->volume_name) + ret = clear_user(arg, 1); + else + ret = copy_to_user(arg, sbi->volume_name, + strlen(sbi->volume_name)); + return ret ? -EFAULT : 0; +} + +long erofs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + struct inode *inode = file_inode(filp); + void __user *argp = (void __user *)arg; + + switch (cmd) { + case FS_IOC_GETFSLABEL: + return erofs_ioctl_get_volume_label(inode, argp); + default: + return -ENOTTY; + } +} + +#ifdef CONFIG_COMPAT +long erofs_compat_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg) +{ + return erofs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); +} +#endif + const struct inode_operations erofs_generic_iops = { .getattr = erofs_getattr, .listxattr = erofs_listxattr, |