install to fakeroot

1 files changed, 28 insertions, 1 deletions

diff --git a/snag/src/build_db.c b/snag/src/build_db.c
index 7e22e09..7e045b0 100644
--- a/snag/src/build_db.c
+++ b/snag/src/build_db.c
@@ -4,6 +4,9 @@
 #include "util.h"
 #include "source_db.h"
 
+#define _XOPEN_SOURCE 500
+#include <ftw.h>
+
 #include <poll.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -15,11 +18,13 @@
 #include <sys/stat.h>
 #include <errno.h>
 
+
 #include "sandboxing.h"
 
 #define API_MESSAGE_NONE      0
 #define API_MESSAGE_FINISHED  1
 #define API_MESSAGE_TEST      2
+#define API_MESSAGE_GET_VAR   3
 
 bool set_child_sandbox(const package_build_t* build) {
     struct landlock_ruleset_attr ruleset_attr = {
@@ -74,7 +79,7 @@ bool set_child_sandbox(const package_build_t* build) {
             LANDLOCK_ACCESS_FS_IOCTL_DEV |
             LANDLOCK_ACCESS_FS_RESOLVE_UNIX,
     };
-    if (!landlock_add_path_rule(landlock_fd, &ruleset_attr, build->source_directory, &path_beneath)) {
+    if (!landlock_add_path_rule(landlock_fd, &ruleset_attr, build->directory, &path_beneath)) {
         return false;
     }
     path_beneath.allowed_access = LANDLOCK_ACCESS_FS_EXECUTE | LANDLOCK_ACCESS_FS_READ_FILE;
@@ -170,6 +175,9 @@ bool package_setup_build(const package_info_t* info, package_build_t* build) {
 	if (symlink(build->directory + cfg.build_db_len + 1, symlink_name) == -1) die("failed to create build symlink '%s': %s", symlink_name, strerror(errno));
 	free(symlink_name);
 
+    build->fakeroot = join_path(build->directory, "fakeroot");
+	if (mkdir(build->fakeroot, 0777) == -1) die("failed to create fakeroot directory: %s", strerror(errno));
+
 	// unpack package source (eventually this will be done by swenu api)
 	build->source_directory = join_path(build->directory, "source");
 	unpack_source(&info->attrs.source, build->source_directory);
@@ -260,6 +268,14 @@ void build_run(const package_build_t* build) {
                 printf("api test\n");
                 write(api_to_sh[1], "api test\n", strlen("api test\n"));
                 break;
+            case API_MESSAGE_GET_VAR:
+                bytes_read = read(api_from_sh[0], buf, sizeof(buf));
+                if (strncmp(buf, "root", sizeof("root") - 1) == 0) {
+                    char* tmp = vastrcat(build->fakeroot, "\n");
+                    write(api_to_sh[1], tmp, strlen(tmp));
+                    free(tmp);
+                }
+                break;
             case API_MESSAGE_NONE:
 				break;
             }
@@ -280,3 +296,14 @@ void build_run(const package_build_t* build) {
     if (waitpid(pid, &wstatus, 0) < 0) die("waitpid failed: %s", strerror(errno));
 	if (WEXITSTATUS(wstatus) != 0) die("the child failed to execute install script");
 }
+
+int nftw_callback(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf) {
+    char* path = strstr(fpath, "fakeroot") + strlen("fakeroot");
+    if (!path[0]) return 0;
+    print("%s\n", path);
+    return 0;
+}
+
+void list_fakeroot(const package_build_t* build) {
+    nftw(build->fakeroot, nftw_callback, 100, FTW_PHYS);
+}