minix/lib/other/initgroups.c

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/*
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);
}