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vfs_xattr_tdb: handle case of zero size.

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With getxattr(), passing a zero buffer size is a
way of obtaining actual xattr size.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12737

Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Uri Simchoni 2017-04-13 12:50:47 +03:00 committed by Jeremy Allison
parent 5017dfeef2
commit 4dfa2d6a09
1 changed files with 12 additions and 0 deletions
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12
source3/modules/vfs_xattr_tdb.c
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@ -85,6 +85,12 @@ static ssize_t xattr_tdb_getxattr(struct vfs_handle_struct *handle,
TALLOC_FREE(frame);
return -1;
}
if (size == 0) {
TALLOC_FREE(frame);
return xattr_size;
}
if (blob.length > size) {
TALLOC_FREE(frame);
errno = ERANGE;
@ -125,6 +131,12 @@ static ssize_t xattr_tdb_fgetxattr(struct vfs_handle_struct *handle,
TALLOC_FREE(frame);
return -1;
}
if (size == 0) {
TALLOC_FREE(frame);
return xattr_size;
}
if (blob.length > size) {
TALLOC_FREE(frame);
errno = ERANGE;