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use setresuid(2) and friends instead, saves 88t 4d 1i

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XXX revisit this if we encounter systems without at least
XXX one of setresuid, setresgid, setgroups - only tested on BSD
This commit is contained in:
tg
2006-11-10 06:27:09 +00:00
parent c942031805
commit a199d23dfa
3 changed files with 10 additions and 17 deletions
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11
misc.c
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@ -3,7 +3,7 @@
#include "sh.h"
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.34 2006/11/10 05:21:38 tg Exp $\t"
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.35 2006/11/10 06:27:09 tg Exp $\t"
MKSH_SH_H_ID);
#undef USE_CHVT
@ -239,10 +239,11 @@ change_flag(enum sh_flag f,
Flag(f) = newval;
} else if (f == FPRIVILEGED && oldval && !newval) {
/* Turning off -p? */
seteuid(ksheuid = kshuid = getuid());
setuid(ksheuid);
setegid(kshegid = kshgid = getgid());
setgid(kshegid);
gid_t kshegid = getgid();
setresgid(kshegid, kshegid, kshegid);
setgroups(1, &kshegid);
setresuid(ksheuid, ksheuid, ksheuid);
} else if (f == FPOSIX && newval) {
Flag(FBRACEEXPAND) = 0;
}