Here's the problem. I'm using the stat function to get the characteristics of a file on my system. The structure has a st_mode entry which is supposed to hold the permission parameters of the given file. But it is given in the form of an integer, and I need to put it in the form of a string (aka "frwx------"). My question is how can we find, from the st_mode entry, whether a file is readable by the user, writable by the user, etc...
Thanks for the help.
Teacher: "You connect with Internet Explorer, but what is your browser? You know, Yahoo, Webcrawler...?" It's great to see the educational system moving in the right direction
Check for the bit masks S_IFCHR, S_IFREG, S_IWRITE, S_IREAD, etc.
[edit]man stat for relevant bit masks.
Last edited by Dave_Sinkula; 02-08-2006 at 05:07 PM.
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
Once you have the constant you want, AND it with fstat's st_mode:
Code:if(st.st_mode & S_IREAD) {
dwk
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If you don't have man, look at this page: http://www.wlug.org.nz/fstat(2)
dwk
Seek and ye shall find. quaere et invenies.
"Simplicity does not precede complexity, but follows it." -- Alan Perlis
"Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
"The only real mistake is the one from which we learn nothing." -- John Powell
Other boards: DaniWeb, TPS
Unofficial Wiki FAQ: cpwiki.sf.net
My website: http://dwks.theprogrammingsite.com/
Projects: codeform, xuni, atlantis, nort, etc.
