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* Fix setuid builds.

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This commit is contained in:
Eelco Dolstra 2006-09-27 21:04:07 +00:00
parent 015ac7c7da
commit 4ad6fb7ea3
2 changed files with 9 additions and 9 deletions
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4
src/libmain/shared.cc
View file

@ -9,13 +9,9 @@
#include <iostream>
#include <cctype>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <aterm2.h>

14
src/libutil/util.cc
View file

@ -13,6 +13,10 @@
#include <sys/wait.h>
#include <fcntl.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include "util.hh"
@ -913,7 +917,7 @@ void switchToNixUser()
/* Lookup the Nix gid. */
struct group * gr = getgrnam(NIX_GROUP);
if (!gr) {
cerr << format("missing group `%1%'\n") % NIX_GROUP;
std::cerr << format("missing group `%1%'\n") % NIX_GROUP;
exit(1);
}
@ -921,7 +925,7 @@ void switchToNixUser()
int maxGids = 512, nrGids;
gid_t gids[maxGids];
if ((nrGids = getgroups(maxGids, gids)) == -1) {
cerr << format("unable to query gids\n");
std::cerr << format("unable to query gids\n");
exit(1);
}
@ -955,14 +959,14 @@ void switchToNixUser()
because we cannot do it after we have dropped root uid. */
nixGid = gr->gr_gid;
if (_setgid(nixGid) != 0 || getgid() != nixGid || getegid() != nixGid) {
cerr << format("unable to set gid to `%1%'\n") % NIX_GROUP;
std::cerr << format("unable to set gid to `%1%'\n") % NIX_GROUP;
exit(1);
}
/* Lookup the Nix uid. */
struct passwd * pw = getpwnam(NIX_USER);
if (!pw) {
cerr << format("missing user `%1%'\n") % NIX_USER;
std::cerr << format("missing user `%1%'\n") % NIX_USER;
exit(1);
}
@ -971,7 +975,7 @@ void switchToNixUser()
succeeded.*/
nixUid = pw->pw_uid;
if (_setuid(nixUid) != 0 || getuid() != nixUid || geteuid() != nixUid) {
cerr << format("unable to set uid to `%1%'\n") % NIX_USER;
std::cerr << format("unable to set uid to `%1%'\n") % NIX_USER;
exit(1);
}