diff options
Diffstat (limited to 'kernel/fs/cifs/ioctl.c')
| -rw-r--r-- | kernel/fs/cifs/ioctl.c | 84 |
1 files changed, 73 insertions, 11 deletions
diff --git a/kernel/fs/cifs/ioctl.c b/kernel/fs/cifs/ioctl.c index 64a9bca97..35cf990f8 100644 --- a/kernel/fs/cifs/ioctl.c +++ b/kernel/fs/cifs/ioctl.c @@ -31,12 +31,12 @@ #include "cifsproto.h" #include "cifs_debug.h" #include "cifsfs.h" - -#define CIFS_IOCTL_MAGIC 0xCF -#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int) +#include "cifs_ioctl.h" +#include <linux/btrfs.h> static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, - unsigned long srcfd, u64 off, u64 len, u64 destoff) + unsigned long srcfd, u64 off, u64 len, u64 destoff, + bool dup_extents) { int rc; struct cifsFileInfo *smb_file_target = dst_file->private_data; @@ -85,9 +85,14 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, src_tcon = tlink_tcon(smb_file_src->tlink); target_tcon = tlink_tcon(smb_file_target->tlink); - /* check if source and target are on same tree connection */ - if (src_tcon != target_tcon) { - cifs_dbg(VFS, "file copy src and target on different volume\n"); + /* check source and target on same server (or volume if dup_extents) */ + if (dup_extents && (src_tcon != target_tcon)) { + cifs_dbg(VFS, "source and target of copy not on same share\n"); + goto out_fput; + } + + if (!dup_extents && (src_tcon->ses != target_tcon->ses)) { + cifs_dbg(VFS, "source and target of copy not on same server\n"); goto out_fput; } @@ -115,9 +120,14 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file, truncate_inode_pages_range(&target_inode->i_data, destoff, PAGE_CACHE_ALIGN(destoff + len)-1); - if (target_tcon->ses->server->ops->clone_range) + if (dup_extents && target_tcon->ses->server->ops->duplicate_extents) + rc = target_tcon->ses->server->ops->duplicate_extents(xid, + smb_file_src, smb_file_target, off, len, destoff); + else if (!dup_extents && target_tcon->ses->server->ops->clone_range) rc = target_tcon->ses->server->ops->clone_range(xid, smb_file_src, smb_file_target, off, len, destoff); + else + rc = -EOPNOTSUPP; /* force revalidate of size and timestamps of target file now that target is updated on the server */ @@ -133,6 +143,43 @@ out_drop_write: return rc; } +static long smb_mnt_get_fsinfo(unsigned int xid, struct cifs_tcon *tcon, + void __user *arg) +{ + int rc = 0; + struct smb_mnt_fs_info *fsinf; + + fsinf = kzalloc(sizeof(struct smb_mnt_fs_info), GFP_KERNEL); + if (fsinf == NULL) + return -ENOMEM; + + fsinf->version = 1; + fsinf->protocol_id = tcon->ses->server->vals->protocol_id; + fsinf->device_characteristics = + le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics); + fsinf->device_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); + fsinf->fs_attributes = le32_to_cpu(tcon->fsAttrInfo.Attributes); + fsinf->max_path_component = + le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength); +#ifdef CONFIG_CIFS_SMB2 + fsinf->vol_serial_number = tcon->vol_serial_number; + fsinf->vol_create_time = le64_to_cpu(tcon->vol_create_time); + fsinf->share_flags = tcon->share_flags; + fsinf->share_caps = le32_to_cpu(tcon->capabilities); + fsinf->sector_flags = tcon->ss_flags; + fsinf->optimal_sector_size = tcon->perf_sector_size; + fsinf->max_bytes_chunk = tcon->max_bytes_chunk; + fsinf->maximal_access = tcon->maximal_access; +#endif /* SMB2 */ + fsinf->cifs_posix_caps = le64_to_cpu(tcon->fsUnixInfo.Capability); + + if (copy_to_user(arg, fsinf, sizeof(struct smb_mnt_fs_info))) + rc = -EFAULT; + + kfree(fsinf); + return rc; +} + long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) { struct inode *inode = file_inode(filep); @@ -146,8 +193,6 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) xid = get_xid(); - cifs_dbg(FYI, "ioctl file %p cmd %u arg %lu\n", filep, command, arg); - cifs_sb = CIFS_SB(inode->i_sb); switch (command) { @@ -211,7 +256,24 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) } break; case CIFS_IOC_COPYCHUNK_FILE: - rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0); + rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, false); + break; + case BTRFS_IOC_CLONE: + rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, true); + break; + case CIFS_IOC_SET_INTEGRITY: + if (pSMBFile == NULL) + break; + tcon = tlink_tcon(pSMBFile->tlink); + if (tcon->ses->server->ops->set_integrity) + rc = tcon->ses->server->ops->set_integrity(xid, + tcon, pSMBFile); + else + rc = -EOPNOTSUPP; + break; + case CIFS_IOC_GET_MNT_INFO: + tcon = tlink_tcon(pSMBFile->tlink); + rc = smb_mnt_get_fsinfo(xid, tcon, (void __user *)arg); break; default: cifs_dbg(FYI, "unsupported ioctl\n"); |