Thanks Dirk, I was afraid of that, but glad that you confirmed it. In the mean time I've figured out a way that may not require root :)
thanks again Bhaskar On Sun, Mar 15, 2015 at 4:14 PM, Dirk Eddelbuettel <e...@debian.org> wrote: > > On 15 March 2015 at 15:48, Bhaskar V. Karambelkar wrote: > | I need to call a 3rd party library function with root privileges. > | I'm not sure how to accomplish this from within Rcpp. > > I dont think you can ... > > | If I was writing an executable, I could call seteuid to elevate > privileges > | before calling the external function, and set the suid bit on the > executable. > | But given that this needs to be done from within a Rcpp Library, I'm not > sure > | how to do this. The last thing I want to do is run R as root or set suid > on the > | R binary. > > ... unless you run R with suid bits, which you shouldn't as you rightly > point out. > > Rcpp is standard C/C++ code. So the wisdom of 'man seteuid' still applies: > > seteuid() sets the effective user ID of the calling process. > Unprivileged > user processes may only set the effective user ID to the real user ID, > the > effective user ID or the saved set-user-ID. > > | Any help / pointers would be greatly appreciated. > > You may have to call a small self-contained executable which may then have > a > suid bit set. > > Dirk > > -- > http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org >
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