diff options
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index e2eff66eefab..c1c704990b98 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -8,6 +8,7 @@ #ifndef _CIFSPROTO_H #define _CIFSPROTO_H #include <linux/nls.h> +#include <linux/ctype.h> #include "trace.h" #ifdef CONFIG_CIFS_DFS_UPCALL #include "dfs_cache.h" @@ -572,7 +573,7 @@ extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, extern struct TCP_Server_Info * cifs_find_tcp_session(struct smb3_fs_context *ctx); -extern void cifs_put_smb_ses(struct cifs_ses *ses); +void __cifs_put_smb_ses(struct cifs_ses *ses); extern struct cifs_ses * cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); @@ -696,4 +697,45 @@ struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon); void cifs_put_tcon_super(struct super_block *sb); int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); +/* Put references of @ses and @ses->dfs_root_ses */ +static inline void cifs_put_smb_ses(struct cifs_ses *ses) +{ + struct cifs_ses *rses = ses->dfs_root_ses; + + __cifs_put_smb_ses(ses); + if (rses) + __cifs_put_smb_ses(rses); +} + +/* Get an active reference of @ses and @ses->dfs_root_ses. + * + * NOTE: make sure to call this function when incrementing reference count of + * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) + * will also get its reference count incremented. + * + * cifs_put_smb_ses() will put both references, so call it when you're done. + */ +static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) +{ + lockdep_assert_held(&cifs_tcp_ses_lock); + + ses->ses_count++; + if (ses->dfs_root_ses) + ses->dfs_root_ses->ses_count++; +} + +static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) +{ + if (strlen(s1) != strlen(s2)) + return false; + for (; *s1; s1++, s2++) { + if (*s1 == '/' || *s1 == '\\') { + if (*s2 != '/' && *s2 != '\\') + return false; + } else if (tolower(*s1) != tolower(*s2)) + return false; + } + return true; +} + #endif /* _CIFSPROTO_H */ |