net/netlabel/netlabel_kapi.c

599  * netlbl_catmap_walk - Walk a LSM secattr catmap looking for a bit
605  * returns the spot of the first set bit or -ENOENT if no bits are set.
612 	u32 bit;
621 		bit = offset % NETLBL_CATMAP_MAPSIZE;
624 		bit = 0;
626 	bitmap = iter->bitmap[idx] >> bit;
632 				bit++;
635 			       (NETLBL_CATMAP_MAPSIZE * idx) + bit;
645 		bit = 0;
659  * returns the spot of the first cleared bit or -ENOENT if the offset is past
668 	u32 bit;
678 		bit = offset % NETLBL_CATMAP_MAPSIZE;
681 		bit = 0;
683 	bitmask = NETLBL_CATMAP_BIT << bit;
689 			bit++;
692 		if (prev && idx == 0 && bit == 0)
696 				(NETLBL_CATMAP_MAPSIZE * idx) + bit - 1;
705 		bit = 0;
765  * netlbl_catmap_setbit - Set a bit in a LSM secattr catmap
767  * @bit: the bit to set
771  * Set the bit specified by @bit in @catmap.  Returns zero on success,
776 			 u32 bit,
782 	iter = _netlbl_catmap_getnode(catmap, bit, _CM_F_ALLOC, flags);
786 	bit -= iter->startbit;
787 	idx = bit / NETLBL_CATMAP_MAPSIZE;
788 	iter->bitmap[idx] |= NETLBL_CATMAP_BIT << (bit % NETLBL_CATMAP_MAPSIZE);
797  * @start: the starting bit
798  * @end: the last bit in the string
870  * netlbl_bitmap_walk - Walk a bitmap looking for a bit
874  * @state: if non-zero, look for a set (1) bit else look for a cleared (0) bit
878  * desired bit is found or we reach the end.  Return the bit offset, -1 if
915  * netlbl_bitmap_setbit - Sets a single bit in a bitmap
917  * @bit: the bit
918  * @state: if non-zero, set the bit (1) else clear the bit (0)
921  * Set a single bit in the bitmask.  Returns zero on success, negative values
924 void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state)
930 	byte_spot = bit / 8;
931 	bitmask = 0x80 >> (bit % 8);