Edit/update an /etc/group database entry (c/c++)


 
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Special Forums UNIX and Linux Applications Edit/update an /etc/group database entry (c/c++)
# 1  
Old 06-02-2008
Edit/update an /etc/group database entry (c/c++)

Hello

I'm writing a program for managing accounts and groups in a linux system.
My problem is how to update the members of a group in the /etc/group file,if i have to add/remove those members.

total 3 variables for adding some new members to the group :

Code:
char **oldmembers=grp->gr_mem;        //members before 
char **newmembers;      //new members to be added
char **totalmembers;     //total members (new_old)

while *(oldmembers)
{
*totalmebers=*oldmembers;
totalmebers++
oldmembers++
}

I cant figure out how to continue using the totalmembers pointer from the point it stopped inside the while loop,to add the newmembers now
e.g
Code:
 while *(newmembers)
{
*totalmebers=*newmembers;
totalmebers++
newmembers++
}

so i the end i could have the total memebrs in order to use the setgrnam(struct group *grp) to parse the updated group struct


any help would be appreciated (and any different approach too)
Thanks
# 2  
Old 06-02-2008
ok i'm done with adding,using the addgroup from the shell Smilie
any ideas for removing members?
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