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Commit b2a0fa15 authored by Jeff Layton's avatar Jeff Layton Committed by Steve French
Browse files

cifs: fix build_unc_path_to_root to account for a prefixpath 



Regression introduced by commit f87d39d9.

Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Reviewed-by: default avatarPavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 677d8537

fs/cifs/connect.c

+15 −6
Original line number Diff line number Diff line
@@ -2855,19 +2855,28 @@ cifs_cleanup_volume_info(struct smb_vol **pvolume_info) 
/* build_path_to_root returns full path to root when

 * we do not have an exiting connection (tcon) */

static char *

build_unc_path_to_root(const struct smb_vol *volume_info,

build_unc_path_to_root(const struct smb_vol *vol,

		const struct cifs_sb_info *cifs_sb)

{

	char *full_path;

	char *full_path, *pos;

	unsigned int pplen = vol->prepath ? strlen(vol->prepath) : 0;

	unsigned int unc_len = strnlen(vol->UNC, MAX_TREE_SIZE + 1);



	int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1);

	full_path = kmalloc(unc_len + 1, GFP_KERNEL);

	full_path = kmalloc(unc_len + pplen + 1, GFP_KERNEL);

	if (full_path == NULL)

		return ERR_PTR(-ENOMEM);



	strncpy(full_path, volume_info->UNC, unc_len);

	full_path[unc_len] = 0; /* add trailing null */

	strncpy(full_path, vol->UNC, unc_len);

	pos = full_path + unc_len;



	if (pplen) {

		strncpy(pos, vol->prepath, pplen);

		pos += pplen;

	}



	*pos = '\0'; /* add trailing null */

	convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));

	cFYI(1, "%s: full_path=%s", __func__, full_path);

	return full_path;

}