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samba-mirror/source3/modules/vfs_glusterfs_fuse.c
Anoop C S e28d172b00 s3/vfs_glusterfs_fuse: Dynamically determine NAME_MAX
This allows the vfs_glusterfs_fuse build to complete on AIX.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13872

Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2019-04-26 12:04:21 +00:00

92 lines
2.1 KiB
C

/*
Unix SMB/CIFS implementation.
Copyright (c) 2019 Guenther Deschner <gd@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "system/filesys.h"
static int vfs_gluster_fuse_get_real_filename(struct vfs_handle_struct *handle,
const char *path,
const char *name,
TALLOC_CTX *mem_ctx,
char **_found_name)
{
int ret;
char *key_buf = NULL, *val_buf = NULL;
long name_max;
char *found_name = NULL;
name_max = pathconf(path, _PC_NAME_MAX);
if ((name_max + 1) < 1) {
errno = EINVAL;
return -1;
}
if (strlen(name) >= name_max) {
errno = ENAMETOOLONG;
return -1;
}
key_buf = talloc_asprintf(mem_ctx, "glusterfs.get_real_filename:%s",
name);
if (key_buf == NULL) {
errno = ENOMEM;
return -1;
}
val_buf = talloc_zero_array(mem_ctx, char, name_max + 1);
if (val_buf == NULL) {
errno = ENOMEM;
return -1;
}
ret = getxattr(path, key_buf, val_buf, name_max + 1);
if (ret == -1) {
if (errno == ENOATTR) {
errno = EOPNOTSUPP;
}
return -1;
}
found_name = talloc_strdup(mem_ctx, val_buf);
if (found_name == NULL) {
errno = ENOMEM;
return -1;
}
*_found_name = found_name;
TALLOC_FREE(key_buf);
TALLOC_FREE(val_buf);
return 0;
}
struct vfs_fn_pointers glusterfs_fuse_fns = {
/* File Operations */
.get_real_filename_fn = vfs_gluster_fuse_get_real_filename,
};
static_decl_vfs;
NTSTATUS vfs_glusterfs_fuse_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
"glusterfs_fuse", &glusterfs_fuse_fns);
}