please tell me where can I find the source code for function 'stat(char *, struct stat *)'

[shuaijie wang]

I linux system, there is a system funtion 'stat(char *, struct stat *)', I
want to read the source code of this function, but while I assume that this
function may exist in the file
 /usr/src/linux-2.4/fs/stat.c, it actually doesn't. In file stat.c, I can't
find the funtion of 'stat()', so please tell me where I can find this
funtion in linux src? thank you