C user function to check whether a given user has access permission to a file

iamjayanth · 10-07-2009, 12:42 AM

Hi all,

Is there any C function in linux that help me to check whether a given user has a given permission on a file..

I tried access function , but it can only be used to check current users permission...

Code:

int access(const char *pathname, int mode)

Is there any function in which i can give a perticular user name or uid as one of the argument so than I can check for any users permission...

crabboy · 10-07-2009, 01:05 AM

You need to call stat on the file and check the st_mode bitmask. There are plenty of examples around.

iamjayanth · 10-07-2009, 08:16 AM

Thanks crabboy...That does help