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Full Discussion: Edit/update an /etc/group database entry (c/c++)
Special Forums UNIX and Linux Applications Edit/update an /etc/group database entry (c/c++) Post 302201601 by mekos on Monday 2nd of June 2008 03:41:14 PM
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
 

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LEARN ABOUT HPUX

rpccp_remove_group

remove group(1m)														  remove group(1m)

NAME

       remove group - Removes all group members and the group from the specified name service entry

SYNOPSIS

       rpccp remove group  group-entry-name [-s syntax]

OPTIONS

       Indicates  the  name  syntax of the entry name (optional). The only value for this option is the dce name syntax, which is the default name
       syntax. Until an alternative name syntax becomes available, specifying the -s option is unnecessary.

ARGUMENTS

       Indicates the name of the target group.	For an entry in the local cell, you can omit the cell name  and  specify  only	the  cell-relative
       name.

DESCRIPTION

       The  remove  group  command  removes  a group from the name service database.  The group need not be empty.  The entry name of the group is
       required.

   Privilege Required
       You need write permission to the CDS object entry (the target group entry).

NOTE

       This command is replaced at Revision 1.1 by the dcecp command and may not be provided in future releases of DCE.

EXAMPLES

       The following commands run RPCCP and remove the group from the name service entry /.:/LandS/anthro/Calendar_group: $  rpccp  rpccp>  remove
       group /.:/LandS/anthro/Calendar_group

RELATED INFORMATION

       Commands: add member(1m), remove member(1m), show group(1m)

																  remove group(1m)
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