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s3: VFS: vfs_cap. Implement linkat().

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Currently identical to link().

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
This commit is contained in:
Jeremy Allison 2019-08-13 14:59:05 -07:00
parent 6c3928e4e5
commit 648e771a61
1 changed files with 61 additions and 0 deletions
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61
source3/modules/vfs_cap.c
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@ -637,6 +637,66 @@ static int cap_link(vfs_handle_struct *handle,
return ret;
}
static int cap_linkat(vfs_handle_struct *handle,
files_struct *srcfsp,
const struct smb_filename *old_smb_fname,
files_struct *dstfsp,
const struct smb_filename *new_smb_fname,
int flags)
{
char *capold = capencode(talloc_tos(), old_smb_fname->base_name);
char *capnew = capencode(talloc_tos(), new_smb_fname->base_name);
struct smb_filename *old_cap_smb_fname = NULL;
struct smb_filename *new_cap_smb_fname = NULL;
int saved_errno = 0;
int ret;
if (!capold || !capnew) {
errno = ENOMEM;
return -1;
}
old_cap_smb_fname = synthetic_smb_fname(talloc_tos(),
capold,
NULL,
NULL,
old_smb_fname->flags);
if (old_cap_smb_fname == NULL) {
TALLOC_FREE(capold);
TALLOC_FREE(capnew);
errno = ENOMEM;
return -1;
}
new_cap_smb_fname = synthetic_smb_fname(talloc_tos(),
capnew,
NULL,
NULL,
new_smb_fname->flags);
if (new_cap_smb_fname == NULL) {
TALLOC_FREE(capold);
TALLOC_FREE(capnew);
TALLOC_FREE(old_cap_smb_fname);
errno = ENOMEM;
return -1;
}
ret = SMB_VFS_NEXT_LINKAT(handle,
srcfsp,
old_cap_smb_fname,
dstfsp,
new_cap_smb_fname,
flags);
if (ret == -1) {
saved_errno = errno;
}
TALLOC_FREE(capold);
TALLOC_FREE(capnew);
TALLOC_FREE(old_cap_smb_fname);
TALLOC_FREE(new_cap_smb_fname);
if (saved_errno != 0) {
errno = saved_errno;
}
return ret;
}
static int cap_mknod(vfs_handle_struct *handle,
const struct smb_filename *smb_fname,
mode_t mode,
@ -1027,6 +1087,7 @@ static struct vfs_fn_pointers vfs_cap_fns = {
.symlink_fn = cap_symlink,
.readlink_fn = cap_readlink,
.link_fn = cap_link,
.linkat_fn = cap_linkat,
.mknod_fn = cap_mknod,
.realpath_fn = cap_realpath,
.sys_acl_get_file_fn = cap_sys_acl_get_file,