diff options
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index f16f6d2b5217..6124b1d1ab05 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1973,6 +1973,41 @@ find_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only) return cfile; } +int +cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, + struct cifsFileInfo **ret_file) +{ + struct list_head *tmp; + struct cifsFileInfo *cfile; + struct cifsInodeInfo *cinode; + char *full_path; + + *ret_file = NULL; + + spin_lock(&tcon->open_file_lock); + list_for_each(tmp, &tcon->openFileList) { + cfile = list_entry(tmp, struct cifsFileInfo, + tlist); + full_path = build_path_from_dentry(cfile->dentry); + if (full_path == NULL) { + spin_unlock(&tcon->open_file_lock); + return -ENOMEM; + } + if (strcmp(full_path, name)) { + kfree(full_path); + continue; + } + + kfree(full_path); + cinode = CIFS_I(d_inode(cfile->dentry)); + spin_unlock(&tcon->open_file_lock); + return cifs_get_writable_file(cinode, 0, ret_file); + } + + spin_unlock(&tcon->open_file_lock); + return -ENOENT; +} + static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to) { struct address_space *mapping = page->mapping; |