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Full Discussion: allow user to use sudo cp on a specific directory and only a specific file
Top Forums UNIX for Advanced & Expert Users allow user to use sudo cp on a specific directory and only a specific file Post 302553933 by Peasant on Friday 9th of September 2011 08:10:04 AM
Old 09-09-2011
I would reccomend you check setuid.

You can make a shell script and a small c program to call it with root privileges.

So an example :
You make shell script with USER named test.sh which does cp file1 /etc/
Then you make a C program called execshell (or whatever) which runs that script with system call ( please find examples online for C setuid and system call )

Compile that program.

As root you make chown root:root and chmod 4755 to that C program.
User can now invoke that c program which will execute that shell script with root permisions and copy the file1 to /etc/ as root invoked by USER.

Be carefull tho, setuid needs to be handled with care.
passwd would be a lovely example of setuid in C and exceptions it uses.

Hope that helps.
Regards
Peasant.
 

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LEARN ABOUT MOJAVE

chroot

CHROOT(8)						    BSD System Manager's Manual 						 CHROOT(8)

NAME

     chroot -- change root directory

SYNOPSIS

     chroot [-u -user] [-g -group] [-G -group,group,...] newroot [command]

DESCRIPTION

     The chroot command changes its root directory to the supplied directory newroot and exec's command, if supplied, or an interactive copy of
     your shell.

     If the -u, -g or -G options are given, the user, group and group list of the process are set to these values after the chroot has taken
     place.  See setgid(2), setgroups(2), setuid(2), getgrnam(3) and getpwnam(3).

     Note, command or the shell are run as your real-user-id.

ENVIRONMENT

     The following environment variable is referenced by chroot:

     SHELL  If set, the string specified by SHELL is interpreted as the name of the shell to exec.  If the variable SHELL is not set, /bin/sh is
	    used.

SEE ALSO

     chdir(2), chroot(2), environ(7)

HISTORY

     The chroot utility first appeared in 4.4BSD.

SECURITY CONSIDERATIONS

     chroot should never be installed setuid root, as it would then be possible to exploit the program to gain root privileges.

4.3 Berkeley Distribution					  October 6, 1998					 4.3 Berkeley Distribution
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