linux-6.12.1/lib/nlattr.c

19 /* For these data types, attribute length should be exactly the given
21  * attribute length does not match the expected size a warning is emitted
214 		pr_warn_ratelimited("netlink: '%s': attribute type %d has an invalid length.\n",  in nla_validate_range_unsigned()
218 						"invalid attribute length");  in nla_validate_range_unsigned()
231 						"binary attribute size out of range");  in nla_validate_range_unsigned()
414 		pr_warn_ratelimited("netlink: '%s': attribute type %d has an invalid length.\n",  in validate_nla()
418 						"invalid attribute length");  in validate_nla()
457 						"invalid attribute length");  in validate_nla()
519 				 * error message/attribute pointer  in validate_nla()
526 		/* a nested array attribute is allowed to be empty; if its not,  in validate_nla()
542 				 * error message/attribute pointer  in validate_nla()
552 					    "Unsupported attribute");  in validate_nla()
600 				"Attribute failed policy validation");  in validate_nla()
628 						    "Unknown attribute type");  in __nla_validate_parse()
659  * @head: head of attribute stream
660  * @len: length of attribute stream
661  * @maxtype: maximum attribute type to be expected
666  * Validates all attributes in the specified attribute stream against the
714  * @maxtype: maximum attribute type to be expected
715  * @head: head of attribute stream
716  * @len: length of attribute stream
721  * Parses a stream of attributes and stores a pointer to each attribute in
722  * the tb array accessible via the attribute type.
738  * nla_find - Find a specific attribute in a stream of attributes
739  * @head: head of attribute stream
740  * @len: length of attribute stream
741  * @attrtype: type of attribute to look for
743  * Returns the first attribute in the stream matching the specified type.
759  * nla_strscpy - Copy string attribute payload into a sized buffer
761  * @nla: Attribute to copy the string from.
802  * nla_strdup - Copy string attribute payload into a newly allocated buffer
803  * @nla: attribute to copy the string from
826  * nla_memcpy - Copy a netlink attribute into another memory area
828  * @src: netlink attribute to copy from
832  *       attribute's payload. memcpy
849  * nla_memcmp - Compare an attribute with sized memory area
850  * @nla: netlink attribute
867  * nla_strcmp - Compare a string attribute against a string
868  * @nla: netlink string attribute
891  * __nla_reserve - reserve room for attribute on the skb
893  * @attrtype: attribute type
894  * @attrlen: length of attribute payload
896  * Adds a netlink attribute header to a socket buffer and reserves
900  * tailroom for the attribute header and payload.
917  * __nla_reserve_64bit - reserve room for attribute on the skb and align it
919  * @attrtype: attribute type
920  * @attrlen: length of attribute payload
921  * @padattr: attribute type for the padding
923  * Adds a netlink attribute header to a socket buffer and reserves
925  * attribute will have a 64-bit aligned nla_data() area.
928  * tailroom for the attribute header and payload.
940  * __nla_reserve_nohdr - reserve room for attribute without header
942  * @attrlen: length of attribute payload
944  * Reserves room for attribute payload without a header.
956  * nla_reserve - reserve room for attribute on the skb
958  * @attrtype: attribute type
959  * @attrlen: length of attribute payload
961  * Adds a netlink attribute header to a socket buffer and reserves
965  * the attribute header and payload.
977  * nla_reserve_64bit - reserve room for attribute on the skb and align it
979  * @attrtype: attribute type
980  * @attrlen: length of attribute payload
981  * @padattr: attribute type for the padding
983  * Adds a netlink attribute header to a socket buffer and reserves
985  * attribute will have a 64-bit aligned nla_data() area.
988  * the attribute header and payload.
1007  * nla_reserve_nohdr - reserve room for attribute without header
1009  * @attrlen: length of attribute payload
1011  * Reserves room for attribute payload without a header.
1014  * the attribute payload.
1026  * __nla_put - Add a netlink attribute to a socket buffer
1027  * @skb: socket buffer to add attribute to
1028  * @attrtype: attribute type
1029  * @attrlen: length of attribute payload
1030  * @data: head of attribute payload
1033  * tailroom for the attribute header and payload.
1046  * __nla_put_64bit - Add a netlink attribute to a socket buffer and align it
1047  * @skb: socket buffer to add attribute to
1048  * @attrtype: attribute type
1049  * @attrlen: length of attribute payload
1050  * @data: head of attribute payload
1051  * @padattr: attribute type for the padding
1054  * tailroom for the attribute header and payload.
1067  * __nla_put_nohdr - Add a netlink attribute without header
1068  * @skb: socket buffer to add attribute to
1069  * @attrlen: length of attribute payload
1070  * @data: head of attribute payload
1073  * tailroom for the attribute payload.
1085  * nla_put - Add a netlink attribute to a socket buffer
1086  * @skb: socket buffer to add attribute to
1087  * @attrtype: attribute type
1088  * @attrlen: length of attribute payload
1089  * @data: head of attribute payload
1092  * the attribute header and payload.
1105  * nla_put_64bit - Add a netlink attribute to a socket buffer and align it
1106  * @skb: socket buffer to add attribute to
1107  * @attrtype: attribute type
1108  * @attrlen: length of attribute payload
1109  * @data: head of attribute payload
1110  * @padattr: attribute type for the padding
1113  * the attribute header and payload.
1133  * nla_put_nohdr - Add a netlink attribute without header
1134  * @skb: socket buffer to add attribute to
1135  * @attrlen: length of attribute payload
1136  * @data: head of attribute payload
1139  * the attribute payload.
1152  * nla_append - Add a netlink attribute without header or padding
1153  * @skb: socket buffer to add attribute to
1154  * @attrlen: length of attribute payload
1155  * @data: head of attribute payload
1158  * the attribute payload.