Thread: using lstat st_mode flags

hello everybody!
i am a bit confused about the way the flags and masks defined for st_mode have to be used..
Suppose that I lstat-ed a file and want to retrieve first is permission in numeric format (eg 755) and then simply check if the owner has execute permission..
In the second simplier case, I shall write something like:

Code:

if( (statbuff.st_mode & S_IRWXU) && S_IXUSR )

isn't it?

in the second case,isn't there a faster way to get the numbers 7 5 5 than making all the comparisons possible?


thanks! Bye

and want to retrieve first is permission in numeric format (eg 755)

What?

(statbuff.st_mode & S_IRWXU) && S_IXUSR

Assuming that S_IRWXU is a bitmask, this checks if any of those bits are set in st_mode and also if the constant S_IXUSR has a value other than 0 (I assume it has).