函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\partitions\ldm.c Create Date:2022-07-27 19:03:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ldm_parse_dgr4 - Read a raw VBLK Disk Group object into a vblk structure*@buffer: Block of data being worked on*@buflen: Size of the block of data*@vb: In-memory vblk in which to return information

函数原型：static bool ldm_parse_dgr4(const u8 *buffer, int buflen, struct vblk *vb)

返回类型：bool

参数：

类型参数名称
const u8 *buffer
intbuflen
struct vblk *vb
820  BUG_ON(!buffer || !vb)
822  r_objid等于ldm_relative - Calculate the next relative offset*@buffer: Block of data being worked on*@buflen: Size of the block of data*@base: Size of the previous fixed width fields*@offset: Cumulative size of the previous variable-width fields* Because many of the
823  r_name等于ldm_relative - Calculate the next relative offset*@buffer: Block of data being worked on*@buflen: Size of the block of data*@base: Size of the previous fixed width fields*@offset: Cumulative size of the previous variable-width fields* Because many of the
825  如果buffer[0x12]按位与VBLK_FLAG_DGR4_IDS则
826  r_id1等于ldm_relative - Calculate the next relative offset*@buffer: Block of data being worked on*@buflen: Size of the block of data*@base: Size of the previous fixed width fields*@offset: Cumulative size of the previous variable-width fields* Because many of the
827  r_id2等于ldm_relative - Calculate the next relative offset*@buffer: Block of data being worked on*@buflen: Size of the block of data*@base: Size of the previous fixed width fields*@offset: Cumulative size of the previous variable-width fields* Because many of the
828  len等于r_id2
829  否则
830  r_id1等于0
831  r_id2等于0
832  len等于r_name
834  如果len小于0则返回:false
837  len加等于VBLK_SIZE_DGR4
838  如果len不等于get_unaligned_be32(buffer + 0x14)则返回:false
841  ldm_get_vstr - Read a length-prefixed string into a buffer*@block: Pointer to the length marker*@buffer: Location to copy string to*@buflen: Size of the output buffer* Many of the strings in the LDM Database are not NULL terminated. Instead
842  返回:true
调用者
名称描述
ldm_parse_vblkldm_parse_vblk - Read a raw VBLK object into a vblk structure*@buf: Block of data being worked on*@len: Size of the block of data*@vb: In-memory vblk in which to return information* Read a raw VBLK object into a vblk structure