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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSETGROUPS
#include <skalibs/nonposix.h>
#include <skalibs/posixishard.h>
#include <string.h>
#include <unistd.h>
#include <grp.h>
#include <skalibs/setgroups.h>
int setgroups_and_gid (gid_t g, size_t n, gid_t const *tab)
{
size_t i = 1 ;
if (!n) return setgroups(1, &g) ;
if (tab[0] == g) return setgroups(n, tab) ;
for (; i < n ; i++) if (tab[i] == g) break ;
if (i < n)
{
gid_t newtab[n] ;
newtab[0] = g ;
memcpy(newtab + 1, tab, i * sizeof(gid_t)) ;
memcpy(newtab + i + 1, tab + i + 1, (n - i - 1) * sizeof(gid_t)) ;
return setgroups(n, newtab) ;
}
else
{
gid_t newtab[n+1] ;
newtab[0] = g ;
memcpy(newtab + 1, tab, n * sizeof(gid_t)) ;
return setgroups(n+1, newtab) ;
}
}
int setgroups_with_egid (size_t n, gid_t const *tab)
{
return setgroups_and_gid(getegid(), n, tab) ;
}
int skalibs_setgroups (size_t n, gid_t const *tab)
{
#ifdef SKALIBS_BSD_SUCKS
return setgroups_with_egid(n, tab) ;
#else
return setgroups(n, tab) ;
#endif
}
#endif
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