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/* ISC license. */
#include <sys/types.h>
#include <pwd.h>
#include <limits.h>
#include <skalibs/gidstuff.h>
#include <skalibs/env.h>
#include <skalibs/strerr2.h>
#include <skalibs/fmtscan.h>
#include <skalibs/djbunix.h>
#define USAGE "s6-envuidgid username prog..."
int main (int argc, char const *const *argv, char const *const *envp)
{
PROG = "s6-envuidgid" ;
if (argc < 3) strerr_dieusage(100, USAGE) ;
{
char fmt[UINT64_FMT] ;
struct passwd *pw = getpwnam(argv[1]) ;
if (!pw) strerr_dief2x(1, "unknown user: ", argv[1]) ;
fmt[gid_fmt(fmt, pw->pw_gid)] = 0 ;
if (!pathexec_env("GID", fmt))
strerr_diefu1sys(111, "update environment") ;
fmt[uint64_fmt(fmt, pw->pw_uid)] = 0 ;
if (!pathexec_env("UID", fmt))
strerr_diefu1sys(111, "update environment") ;
}
{
gid_t tab[NGROUPS_MAX] ;
int n = prot_readgroups(argv[1], tab, NGROUPS_MAX) ;
if (n < 0)
strerr_diefu2sys(111, "get supplementary groups for ", argv[1]) ;
{
char fmt[GID_FMT * n] ;
fmt[gid_fmtlist(fmt, tab, n)] = 0 ;
if (!pathexec_env("GIDLIST", fmt))
strerr_diefu1sys(111, "update environment") ;
}
}
pathexec_fromenv(argv+2, envp, env_len(envp)) ;
strerr_dieexec(111, argv[2]) ;
}
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