1 files changed, 0 insertions, 110 deletions
diff --git a/vendor/github.com/projectatomic/buildah/unshare/unshare.c b/vendor/github.com/projectatomic/buildah/unshare/unshare.c
deleted file mode 100644
index 83864359b..000000000
--- a/vendor/github.com/projectatomic/buildah/unshare/unshare.c
+++ /dev/null
@@ -1,110 +0,0 @@
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <grp.h>
-#include <sched.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <termios.h>
-#include <unistd.h>
-
-static int _buildah_unshare_parse_envint(const char *envname) {
-	char *p, *q;
-	long l;
-
-	p = getenv(envname);
-	if (p == NULL) {
-		return -1;
-	}
-	q = NULL;
-	l = strtol(p, &q, 10);
-	if ((q == NULL) || (*q != '\0')) {
-		fprintf(stderr, "Error parsing \"%s\"=\"%s\"!\n", envname, p);
-		_exit(1);
-	}
-	unsetenv(envname);
-	return l;
-}
-
-void _buildah_unshare(void)
-{
-	int flags, pidfd, continuefd, n, pgrp, sid, ctty, allow_setgroups;
-	char buf[2048];
-
-	flags = _buildah_unshare_parse_envint("_Buildah-unshare");
-	if (flags == -1) {
-		return;
-	}
-	if ((flags & CLONE_NEWUSER) != 0) {
-		if (unshare(CLONE_NEWUSER) == -1) {
-			fprintf(stderr, "Error during unshare(CLONE_NEWUSER): %m\n");
-			_exit(1);
-		}
-	}
-	pidfd = _buildah_unshare_parse_envint("_Buildah-pid-pipe");
-	if (pidfd != -1) {
-		snprintf(buf, sizeof(buf), "%llu", (unsigned long long) getpid());
-		if (write(pidfd, buf, strlen(buf)) != strlen(buf)) {
-			fprintf(stderr, "Error writing PID to pipe on fd %d: %m\n", pidfd);
-			_exit(1);
-		}
-		close(pidfd);
-	}
-	continuefd = _buildah_unshare_parse_envint("_Buildah-continue-pipe");
-	if (continuefd != -1) {
-		n = read(continuefd, buf, sizeof(buf));
-		if (n > 0) {
-			fprintf(stderr, "Error: %.*s\n", n, buf);
-			_exit(1);
-		}
-		close(continuefd);
-	}
-	sid = _buildah_unshare_parse_envint("_Buildah-setsid");
-	if (sid == 1) {
-		if (setsid() == -1) {
-			fprintf(stderr, "Error during setsid: %m\n");
-			_exit(1);
-		}
-	}
-	pgrp = _buildah_unshare_parse_envint("_Buildah-setpgrp");
-	if (pgrp == 1) {
-		if (setpgrp() == -1) {
-			fprintf(stderr, "Error during setpgrp: %m\n");
-			_exit(1);
-		}
-	}
-	ctty = _buildah_unshare_parse_envint("_Buildah-ctty");
-	if (ctty != -1) {
-		if (ioctl(ctty, TIOCSCTTY, 0) == -1) {
-			fprintf(stderr, "Error while setting controlling terminal to %d: %m\n", ctty);
-			_exit(1);
-		}
-	}
-	allow_setgroups = _buildah_unshare_parse_envint("_Buildah-allow-setgroups");
-	if ((flags & CLONE_NEWUSER) != 0) {
-		if (allow_setgroups == 1) {
-			if (setgroups(0, NULL) != 0) {
-				fprintf(stderr, "Error during setgroups(0, NULL): %m\n");
-				_exit(1);
-			}
-		}
-		if (setresgid(0, 0, 0) != 0) {
-			fprintf(stderr, "Error during setresgid(0): %m\n");
-			_exit(1);
-		}
-		if (setresuid(0, 0, 0) != 0) {
-			fprintf(stderr, "Error during setresuid(0): %m\n");
-			_exit(1);
-		}
-	}
-	if ((flags & ~CLONE_NEWUSER) != 0) {
-		if (unshare(flags & ~CLONE_NEWUSER) == -1) {
-			fprintf(stderr, "Error during unshare(...): %m\n");
-			_exit(1);
-		}
-	}
-	return;
-}