static int
zpl_get_link_common(struct dentry *dentry, struct inode *ip, char **link)
{
fstrans_cookie_t cookie;
cred_t *cr = CRED();
struct iovec iov;
uio_t uio;
int error;
crhold(cr);
*link = NULL;
iov.iov_len = MAXPATHLEN;
iov.iov_base = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_skip = 0;
uio.uio_resid = (MAXPATHLEN - 1);
uio.uio_segflg = UIO_SYSSPACE;
cookie = spl_fstrans_mark();
error = -zfs_readlink(ip, &uio, cr);
spl_fstrans_unmark(cookie);
crfree(cr);
if (error)
kmem_free(iov.iov_base, MAXPATHLEN);
else
*link = iov.iov_base;
return (error);
}
static void *
zpl_follow_link(struct dentry *dentry, struct nameidata *nd)
{
cred_t *cr = CRED();
struct inode *ip = dentry->d_inode;
struct iovec iov;
uio_t uio;
char *link;
int error;
crhold(cr);
iov.iov_len = MAXPATHLEN;
iov.iov_base = link = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_resid = (MAXPATHLEN - 1);
uio.uio_segflg = UIO_SYSSPACE;
error = -zfs_readlink(ip, &uio, cr);
if (error) {
kmem_free(link, MAXPATHLEN);
nd_set_link(nd, ERR_PTR(error));
} else {
nd_set_link(nd, link);
}
crfree(cr);
return (NULL);
}
const char *
zpl_follow_link(struct dentry *dentry, void **symlink_cookie)
#endif
{
cred_t *cr = CRED();
struct inode *ip = dentry->d_inode;
struct iovec iov;
uio_t uio;
char *link;
int error;
fstrans_cookie_t cookie;
crhold(cr);
iov.iov_len = MAXPATHLEN;
iov.iov_base = link = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_skip = 0;
uio.uio_resid = (MAXPATHLEN - 1);
uio.uio_segflg = UIO_SYSSPACE;
cookie = spl_fstrans_mark();
error = -zfs_readlink(ip, &uio, cr);
spl_fstrans_unmark(cookie);
if (error)
kmem_free(link, MAXPATHLEN);
crfree(cr);
#ifdef HAVE_FOLLOW_LINK_NAMEIDATA
if (error)
nd_set_link(nd, ERR_PTR(error));
else
nd_set_link(nd, link);
return (NULL);
#else
if (error)
return (ERR_PTR(error));
else
return (*symlink_cookie = link);
#endif
}
