diff options
author | Sachin Prabhu <sprabhu@redhat.com> | 2013-11-25 21:09:52 +0400 |
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committer | Steve French <smfrench@gmail.com> | 2014-01-20 10:14:00 +0400 |
commit | cbb0aba6ff3ff5b64f094f81f4d99d2323c0afcc (patch) | |
tree | ea11e115ecfc85225e7abda30ccf75db5996f3cf /fs/cifs/link.c | |
parent | 8205d1bb31af047c6893a4f9e86ed88cf5d6113d (diff) | |
download | linux-cbb0aba6ff3ff5b64f094f81f4d99d2323c0afcc.tar.xz |
cifs: Add create MFSymlinks to protocol ops struct
Add a new protocol ops function create_mf_symlink and have
create_mf_symlink() use it.
This patchset moves the MFSymlink operations completely to the
ops structure so that we only use the right protocol versions when
querying or creating MFSymlinks.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/link.c')
-rw-r--r-- | fs/cifs/link.c | 88 |
1 files changed, 46 insertions, 42 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 77dbd55795d8..3f259aad361d 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -180,59 +180,31 @@ format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str) static int create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon, - const char *fromName, const char *toName, - struct cifs_sb_info *cifs_sb) + struct cifs_sb_info *cifs_sb, const char *fromName, + const char *toName) { int rc; - int oplock = 0; - int remap; - int create_options = CREATE_NOT_DIR; - __u16 netfid = 0; u8 *buf; unsigned int bytes_written = 0; - struct cifs_io_parms io_parms; - struct nls_table *nls_codepage; - - nls_codepage = cifs_sb->local_nls; - remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; rc = format_mf_symlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName); - if (rc != 0) { - kfree(buf); - return rc; - } - - if (backup_cred(cifs_sb)) - create_options |= CREATE_OPEN_BACKUP_INTENT; - - rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE, - create_options, &netfid, &oplock, NULL, - nls_codepage, remap); - if (rc != 0) { - kfree(buf); - return rc; - } - - io_parms.netfid = netfid; - io_parms.pid = current->tgid; - io_parms.tcon = tcon; - io_parms.offset = 0; - io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; + if (rc) + goto out; - rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0); - CIFSSMBClose(xid, tcon, netfid); - kfree(buf); - if (rc != 0) - return rc; + rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, cifs_sb, + fromName, buf, &bytes_written); + if (rc) + goto out; if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE) - return -EIO; - - return 0; + rc = -EIO; +out: + kfree(buf); + return rc; } static int @@ -320,6 +292,39 @@ out: } int +cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const unsigned char *path, + char *pbuf, unsigned int *pbytes_written) +{ + int rc; + int oplock = 0; + __u16 netfid = 0; + struct cifs_io_parms io_parms; + int create_options = CREATE_NOT_DIR; + + if (backup_cred(cifs_sb)) + create_options |= CREATE_OPEN_BACKUP_INTENT; + + rc = CIFSSMBOpen(xid, tcon, path, FILE_CREATE, GENERIC_WRITE, + create_options, &netfid, &oplock, NULL, + cifs_sb->local_nls, + cifs_sb->mnt_cifs_flags & + CIFS_MOUNT_MAP_SPECIAL_CHR); + if (rc) + return rc; + + io_parms.netfid = netfid; + io_parms.pid = current->tgid; + io_parms.tcon = tcon; + io_parms.offset = 0; + io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; + + rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0); + CIFSSMBClose(xid, tcon, netfid); + return rc; +} + +int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr, const unsigned char *path) @@ -553,8 +558,7 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname) /* BB what if DFS and this volume is on different share? BB */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) - rc = create_mf_symlink(xid, pTcon, full_path, symname, - cifs_sb); + rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname); else if (pTcon->unix_ext) rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname, cifs_sb->local_nls); |