jail: fs: add support for asymmetric mount bind

[project/procd.git] / sysupgrade.c

diff --git a/sysupgrade.c b/sysupgrade.c
index 07e33f752d0c3be57962771cdf42f02576d42e7f..fc588b0248353137d4b81fce130d2d35d8dfa710 100644 (file)
--- a/sysupgrade.c
+++ b/sysupgrade.c
@@ -14,18 +14,25 @@
  */
 
 
+#define _GNU_SOURCE
 #include "watchdog.h"
 #include "sysupgrade.h"
 
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 
+#include <libubox/blobmsg.h>
 
-void sysupgrade_exec_upgraded(const char *prefix, char *path, char *command)
+void sysupgrade_exec_upgraded(const char *prefix, char *path,
+                             const char *backup, char *command,
+                             struct blob_attr *options)
 {
        char *wdt_fd = watchdog_fd();
        char *argv[] = { "/sbin/upgraded", NULL, NULL, NULL};
+       struct blob_attr *option;
+       int rem;
        int ret;
 
        ret = chroot(prefix);
@@ -41,6 +48,58 @@ void sysupgrade_exec_upgraded(const char *prefix, char *path, char *command)
                watchdog_set_cloexec(false);
                setenv("WDTFD", wdt_fd, 1);
        }
+
+       if (backup)
+               setenv("UPGRADE_BACKUP", backup, 1);
+
+       blobmsg_for_each_attr(option, options, rem) {
+               const char *prefix = "UPGRADE_OPT_";
+               char value[11];
+               char *name;
+               char *c;
+               int tmp;
+
+               if (asprintf(&name, "%s%s", prefix, blobmsg_name(option)) <= 0)
+                       continue;
+               for (c = name + strlen(prefix); *c; c++) {
+                       if (isalnum(*c) || *c == '_') {
+                               *c = toupper(*c);
+                       } else {
+                               c = NULL;
+                               break;
+                       }
+               }
+
+               if (!c) {
+                       fprintf(stderr, "Option \"%s\" contains invalid characters\n",
+                               blobmsg_name(option));
+                       free(name);
+                       continue;
+               }
+
+               switch (blobmsg_type(option)) {
+               case BLOBMSG_TYPE_INT32:
+                       tmp = blobmsg_get_u32(option);
+                       break;
+               case BLOBMSG_TYPE_INT16:
+                       tmp = blobmsg_get_u16(option);
+                       break;
+               case BLOBMSG_TYPE_INT8:
+                       tmp = blobmsg_get_u8(option);
+                       break;
+               default:
+                       fprintf(stderr, "Option \"%s\" has unsupported type: %d\n",
+                               blobmsg_name(option), blobmsg_type(option));
+                       free(name);
+                       continue;
+               }
+               snprintf(value, sizeof(value), "%u", tmp);
+
+               setenv(name, value, 1);
+
+               free(name);
+       }
+
        execvp(argv[0], argv);
 
        /* Cleanup on failure */