35 lines
558 B
C
35 lines
558 B
C
/*
|
|
initgroups.c
|
|
*/
|
|
#include <sys/param.h>
|
|
#define setgroups _setgroups
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <grp.h>
|
|
|
|
|
|
int initgroups(const char *name, gid_t basegid)
|
|
{
|
|
struct group *gr;
|
|
int r, found = 0, n = 0;
|
|
gid_t groups[NGROUPS];
|
|
|
|
if((r = setgid(basegid)) < 0)
|
|
return(r);
|
|
|
|
setgrent();
|
|
while ((gr = getgrent()) != NULL && (n + 1) <= NGROUPS) {
|
|
char **mem;
|
|
for(mem = gr->gr_mem; mem && *mem; mem++) {
|
|
if(!strcmp(name, *mem)) {
|
|
groups[n++] = gr->gr_gid;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
endgrent();
|
|
|
|
return setgroups(n, groups);
|
|
}
|
|
|