81 bool getSuperBlock(const int blk_fd, struct ext4_super_block* sb) {  in getSuperBlock()  argument
82   if (lseek(blk_fd, SB_OFFSET, SEEK_SET) == -1) {  in getSuperBlock()
87   if (read(blk_fd, sb, sizeof(*sb)) != sizeof(*sb)) {  in getSuperBlock()
100 bool setSbErrorBit(const int blk_fd) {  in setSbErrorBit()  argument
103   if (!getSuperBlock(blk_fd, &sb)) {  in setSbErrorBit()
117   if (lseek(blk_fd, SB_OFFSET, SEEK_SET) == -1) {  in setSbErrorBit()
122   if (write(blk_fd, &sb, sizeof(sb)) != sizeof(sb)) {  in setSbErrorBit()
130 bool corruptGdtFreeBlock(const int blk_fd) {  in corruptGdtFreeBlock()  argument
133   if (!getSuperBlock(blk_fd, &sb)) {  in corruptGdtFreeBlock()
152   if (lseek(blk_fd, block_size, SEEK_SET) == -1) {  in corruptGdtFreeBlock()
161     if (read(blk_fd, &gd, sizeof(gd)) != sizeof(gd)) {  in corruptGdtFreeBlock()
172   if (lseek(blk_fd, -sizeof(gd), SEEK_CUR) == -1) {  in corruptGdtFreeBlock()
177   if (write(blk_fd, &gd, sizeof(gd)) != sizeof(gd)) {  in corruptGdtFreeBlock()