kallsyms_lookup

函数名称：Lookup an address* - modname is set to NULL if it's in the kernel.* - We guarantee that the returned name is valid until we reschedule even if.* It resides in a module.* - We also guarantee that modname will be valid until rescheduled.

函数原型：const char *kallsyms_lookup(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, char *namebuf)

返回类型：char

参数：

类型	参数	名称
unsigned long	addr
unsigned long *	symbolsize
unsigned long *	offset
char **	modname
char *	namebuf

288

namebuf[KSYM_NAME_LEN - 1]等于0

289

namebuf[0]等于0

291

如果is_ksym_addr(addr)则

294

pos等于get_symbol_pos(addr, symbolsize, offset)

296

Expand a compressed symbol data into the resulting uncompressed string,* if uncompressed string is too long (>= maxlen), it will be truncated,* given the offset to where the symbol is in the compressed stream.

298

如果modname则 * modname = NULL

300

返回:namebuf

304

ret等于For kallsyms to ask for address resolution. namebuf should be at* least KSYM_NAME_LEN long: a pointer to namebuf is returned if* found, otherwise NULL.

306

如果非ret则ret等于bpf_address_lookup(addr, symbolsize, offset, modname, namebuf)

310

如果非ret则ret等于ftrace_mod_address_lookup(addr, symbolsize, offset, modname, namebuf)

313

返回:ret

**调用者**
名称	描述
__sprint_symbol	Look up a kernel symbol and return it in a text buffer.
kdbnearsym	kdbnearsym - Return the name of the symbol with the nearest address* less than 'addr'
find_syscall_meta
__btf_resolve_helper_id

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