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authorKaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>2017-04-05 16:28:13 +0300
committerTimo Teräs <timo.teras@iki.fi>2017-06-27 14:52:50 +0300
commite3a2e14ffa6a5842bc836d5809fcbb0494cbbfdd (patch)
tree92add67faac43e6d4e037ed83999f8fcf00b65f7 /abuild-rmtemp.c
parent5a4e6f38891d9ff1da7819df2b18971f6e539abe (diff)
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abuild: build in chroot
This patch is based on earlier work by Timo Teräs.
Diffstat (limited to 'abuild-rmtemp.c')
-rw-r--r--abuild-rmtemp.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/abuild-rmtemp.c b/abuild-rmtemp.c
new file mode 100644
index 0000000..36a12ec
--- /dev/null
+++ b/abuild-rmtemp.c
@@ -0,0 +1,49 @@
+/*
+ * abuild-rmtemp
+ * Copyright (c) 2017 Kaarle Ritvanen
+ * Distributed under GPL-2
+ */
+
+#include <err.h>
+#include <errno.h>
+#include <ftw.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define PREFIX "/var/tmp/abuild."
+
+static void fail() {
+ errx(1, "%s", strerror(errno));
+}
+
+static int handler(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf) {
+ return remove(fpath);
+}
+
+int main(int argc, char **argv) {
+ if (argc < 2) return 0;
+
+ if (getuid()) {
+ argv[0] = "-abuild-rmtemp";
+ execv("/usr/bin/abuild-sudo", argv);
+ }
+
+ if (strncmp(argv[1], PREFIX, strlen(PREFIX)) || \
+ strchr(argv[1] + strlen(PREFIX), '/'))
+ errx(1, "Invalid path: %s", argv[1]);
+
+ struct stat s;
+ if (lstat(argv[1], &s)) fail();
+ struct passwd *p = getpwnam(getenv("USER"));
+ if (!p) errx(1, "Incorrect user");
+ if (s.st_uid != p->pw_uid) errx(1, "Permission denied");
+
+ if (nftw(argv[1], handler, 512, FTW_DEPTH)) fail();
+
+ return 0;
+}