read_lba

函数名称：ad_lba(): Read bytes from disk, starting at given LBA*@state*@lba*@buffer*@count* Description: Reads @count bytes from @state->bdev into @buffer.* Returns number of bytes read on success, 0 on error.

函数原型：static size_t read_lba(struct parsed_partitions *state, u64 lba, u8 *buffer, size_t count)

返回类型：size_t

参数：

类型	参数	名称
struct parsed_partitions *	state
u64	lba
u8 *	buffer
size_t	count

totalreadcount等于0

101

如果非buffer或lba加count除512大于last_lba(): return number of last logical block of device*@bdev: block device* Description: Returns last LBA value on success, 0 on error.* This is stored (by sd and ide-geometry) in* the part[0] entry for this disk, and is the number of则返回:0

104

当count 循环

105

copied等于512

107

data等于read_part_sector(state, lba++, & sect)

108

如果非data则退出

110

如果copied大于count则copied等于count

112

memcpy(buffer, data, copied)

113

put_dev_sector(sect)

114

buffer加等于copied

115

totalreadcount加等于copied

116

count减等于copied

118

返回:totalreadcount

**调用者**
名称	描述
alloc_pvd	alloc_pvd(): reads physical volume descriptor@state@lba* Description: Returns pvd on success, NULL on error.* Allocates space for pvd and fill it with disk blocks at @lba* Notes: remember to free pvd when you're done!
alloc_lvn	alloc_lvn(): reads logical volume names@state@lba* Description: Returns lvn on success, NULL on error.* Allocates space for lvn and fill it with disk blocks at @lba* Notes: remember to free lvn when you're done!

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告