51 lines
1.6 KiB
Diff
51 lines
1.6 KiB
Diff
diff -up ./util/Security.c.nprocs ./util/Security.c
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--- ./util/Security.c.nprocs 2016-01-27 03:07:49.000000000 -0500
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+++ ./util/Security.c 2016-02-22 20:30:06.153297256 -0500
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@@ -31,6 +31,7 @@
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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+#include <grp.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <stdio.h>
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@@ -66,12 +67,17 @@ void Security_setUser(int uid,
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{
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int gidErrno = 0;
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int uidErrno = 0;
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+ int setGroupErrno = 0;
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+ pid_t groups[1];
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if (keepNetAdmin) {
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Setuid_preSetuid(alloc, eh);
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}
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if (gid && setgid(gid)) {
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gidErrno = errno;
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}
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+ if (setgroups(0,groups)) {
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+ setGroupErrno = errno;
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+ }
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if (setuid(uid)) {
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// errno is global and could get overwritten by Setuid_postSetuid()
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uidErrno = errno;
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@@ -85,6 +91,9 @@ void Security_setUser(int uid,
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if (uid != (int) getuid()) {
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Except_throw(eh, "Failed to set UID but seemed to succeed");
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}
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+ if (setGroupErrno > 0) {
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+ Except_throw(eh, "Failed to setgroups [%s]", strerror(setGroupErrno));
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+ }
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if (gidErrno > 0) {
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Except_throw(eh, "Failed to set GID [%s]", strerror(gidErrno));
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}
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@@ -119,8 +128,8 @@ void Security_nofiles(struct Except* eh)
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void Security_noforks(struct Except* eh)
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{
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- if (setrlimit(RLIMIT_NPROC, &(struct rlimit){ 0, 0 })) {
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- Except_throw(eh, "Failed to set fork limit to 0 [%s]", strerror(errno));
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+ if (setrlimit(RLIMIT_NPROC, &(struct rlimit){ 1, 1 })) {
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+ Except_throw(eh, "Failed to set process limit to 1 [%s]", strerror(errno));
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}
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}
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