@@ -89,6 +89,7 @@ extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
extern void cifs_wake_up_task(struct mid_q_entry *mid);
extern int cifs_handle_standard(struct TCP_Server_Info *server,
struct mid_q_entry *mid);
+extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx);
extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs);
extern int cifs_discard_remaining_data(struct TCP_Server_Info *server);
extern int cifs_call_async(struct TCP_Server_Info *server,
@@ -1256,61 +1256,6 @@ static int get_option_gid(substring_t args[], kgid_t *result)
return 0;
}
-/*
- * Parse a devname into substrings and populate the vol->UNC and vol->prepath
- * fields with the result. Returns 0 on success and an error otherwise.
- */
-static int
-cifs_parse_devname(const char *devname, struct smb3_fs_context *ctx)
-{
- char *pos;
- const char *delims = "/\\";
- size_t len;
-
- if (unlikely(!devname || !*devname)) {
- cifs_dbg(VFS, "Device name not specified\n");
- return -EINVAL;
- }
-
- /* make sure we have a valid UNC double delimiter prefix */
- len = strspn(devname, delims);
- if (len != 2)
- return -EINVAL;
-
- /* find delimiter between host and sharename */
- pos = strpbrk(devname + 2, delims);
- if (!pos)
- return -EINVAL;
-
- /* skip past delimiter */
- ++pos;
-
- /* now go until next delimiter or end of string */
- len = strcspn(pos, delims);
-
- /* move "pos" up to delimiter or NULL */
- pos += len;
- ctx->UNC = kstrndup(devname, pos - devname, GFP_KERNEL);
- if (!ctx->UNC)
- return -ENOMEM;
-
- convert_delimiter(ctx->UNC, '\\');
-
- /* skip any delimiter */
- if (*pos == '/' || *pos == '\\')
- pos++;
-
- /* If pos is NULL then no prepath */
- if (!*pos)
- return 0;
-
- ctx->prepath = kstrdup(pos, GFP_KERNEL);
- if (!ctx->prepath)
- return -ENOMEM;
-
- return 0;
-}
-
static int
cifs_parse_mount_options(const char *mountdata, const char *devname,
struct smb3_fs_context *ctx, bool is_smb3)
@@ -1414,7 +1359,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
ctx->backupuid_specified = false; /* no backup intent for a user */
ctx->backupgid_specified = false; /* no backup intent for a group */
- switch (cifs_parse_devname(devname, ctx)) {
+ switch (smb3_parse_devname(devname, ctx)) {
case 0:
break;
case -ENOMEM:
@@ -4534,7 +4479,7 @@ static int check_dfs_prepath(struct cifs_sb_info *cifs_sb, struct smb3_fs_contex
struct smb3_fs_context v = {NULL};
/* if @path contains a tree name, skip it in the prefix path */
if (added_treename) {
- rc = cifs_parse_devname(path, &v);
+ rc = smb3_parse_devname(path, &v);
if (rc)
break;
rc = -EREMOTE;
@@ -260,3 +260,59 @@ smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx
return rc;
}
+
+/*
+ * Parse a devname into substrings and populate the ctx->UNC and ctx->prepath
+ * fields with the result. Returns 0 on success and an error otherwise.
+ */
+int
+smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx)
+{
+ char *pos;
+ const char *delims = "/\\";
+ size_t len;
+
+ if (unlikely(!devname || !*devname)) {
+ cifs_dbg(VFS, "Device name not specified\n");
+ return -EINVAL;
+ }
+
+ /* make sure we have a valid UNC double delimiter prefix */
+ len = strspn(devname, delims);
+ if (len != 2)
+ return -EINVAL;
+
+ /* find delimiter between host and sharename */
+ pos = strpbrk(devname + 2, delims);
+ if (!pos)
+ return -EINVAL;
+
+ /* skip past delimiter */
+ ++pos;
+
+ /* now go until next delimiter or end of string */
+ len = strcspn(pos, delims);
+
+ /* move "pos" up to delimiter or NULL */
+ pos += len;
+ ctx->UNC = kstrndup(devname, pos - devname, GFP_KERNEL);
+ if (!ctx->UNC)
+ return -ENOMEM;
+
+ convert_delimiter(ctx->UNC, '\\');
+
+ /* skip any delimiter */
+ if (*pos == '/' || *pos == '\\')
+ pos++;
+
+ /* If pos is NULL then no prepath */
+ if (!*pos)
+ return 0;
+
+ ctx->prepath = kstrdup(pos, GFP_KERNEL);
+ if (!ctx->prepath)
+ return -ENOMEM;
+
+ return 0;
+}
+
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> --- fs/cifs/cifsproto.h | 1 + fs/cifs/connect.c | 59 ++-------------------------------------------------- fs/cifs/fs_context.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+), 57 deletions(-)