C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  UNIX: getuid(), geteuid(): how to copy user's file to my per          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message Constantine Guest Posted: Sun Dec 28, 2003 12:44 am    Post subject: UNIX: getuid(), geteuid(): how to copy user's file to my per Hello, What is the best way to copy a file? I need to copy a file that belongs to the user who ran my programme to my own directory. suid is set on the binary file that is to perform the job. Any details would be appreciated. Thank you, Constantine. Back to top Jeff Schwab Guest Posted: Sun Dec 28, 2003 1:21 am    Post subject: Re: UNIX: getuid(), geteuid(): how to copy user's file to my Constantine wrote: Quote: What is the best way to copy a file? I need to copy a file that belongs to the user who ran my programme to my own directory. suid is set on the binary file that is to perform the job. Any details would be appreciated. This is a newsgroup for discussion of the C++ programming language. Did you have a question or comment about that? If not, please try posting your question in a newsgroup dedicated to your OS. The usual approach is just to call system( "/bin/cp source destination" ) from your program. If you prefer not to do this, you can use the read() and write() system calls. Your system also may provide a special function for copying files; try man unlink, and look under SEE ALSO. If you're having trouble making the program write to your directory when it's called by a user, make sure geteuid returns your uid. If not, your filesystem may have been mounted "nosuid" (a common practice among superstitious admin's). In that case, consider using a separate directory for these files, with group write permission and the SETGID bit high. Then, all files in the directory will be owned collectively by the same group that owns the directory. You may have to get your admin to create a special group. Good luck, Jeff Back to top Jeff Schwab Guest Posted: Mon Dec 29, 2003 8:46 pm    Post subject: Re: UNIX: getuid(), geteuid(): how to copy user's file to my Constantine wrote: Quote: On 2003-12-27 20:21, Jeff Schwab wrote: Constantine wrote: What is the best way to copy a file? I need to copy a file that belongs to the user who ran my programme to my own directory. suid is set on the binary file that is to perform the job. Any details would be appreciated. The usual approach is just to call system( "/bin/cp source destination" ) from your program. If you prefer not to do this, you can use the read() and write() system calls. Your system also may provide a special function for copying files; try man unlink, and look under SEE ALSO. If Will cp utility have access to both users' directories, if run from the programme with suid? If so, how could I get the summary of what files were copied? Each time, there will be around 2 to 5 files to be copied, and I need to know which ones were copied successfully. That depends on your system. Try posting in an appropriate newsgroup. -Jeff Quote: Thank you, Constantine. Back to top Constantine Guest Posted: Mon Dec 29, 2003 8:48 pm    Post subject: Re: UNIX: getuid(), geteuid(): how to copy user's file to my On 2003-12-27 20:21, Jeff Schwab wrote: Quote: Constantine wrote: What is the best way to copy a file? I need to copy a file that belongs to the user who ran my programme to my own directory. suid is set on the binary file that is to perform the job. Any details would be appreciated. The usual approach is just to call system( "/bin/cp source destination" ) from your program. If you prefer not to do this, you can use the read() and write() system calls. Your system also may provide a special function for copying files; try man unlink, and look under SEE ALSO. If Will cp utility have access to both users' directories, if run from the programme with suid? If so, how could I get the summary of what files were copied? Each time, there will be around 2 to 5 files to be copied, and I need to know which ones were copied successfully. Thank you, Constantine. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.