modprobe-small: make insmod command line compatible

function                                             old     new   delta
modprobe_main                                        326     435    +109
moderror                                               -      52     +52
process_module                                       577     530     -47

1 files changed, 25 insertions, 6 deletions

diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 5e33cdc57..e2bf828b7 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -599,7 +599,7 @@ static void process_module(char *name, const char *cmdline_options)
         }
         free(deps);
 
-        /* insmod -> load it */
+        /* modprobe -> load it */
         if (!is_rmmod && !strstr(options, "blacklist")) {
                 errno = 0;
                 if (load_module(info->pathname, options) != 0) {
@@ -688,8 +688,10 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
         /* Prevent ugly corner cases with no modules at all */
         modinfo = xzalloc(sizeof(modinfo[0]));
 
-        /* Goto modules directory */
-        xchdir(CONFIG_DEFAULT_MODULES_DIR);
+        if ('i' != applet0) { /* not insmod */
+                /* Goto modules directory */
+                xchdir(CONFIG_DEFAULT_MODULES_DIR);
+        }
         uname(&uts); /* never fails */
 
         /* depmod? */
@@ -736,8 +738,10 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
                 option_mask32 |= OPT_r;
         }
 
-        /* Goto $VERSION directory */
-        xchdir(uts.release);
+        if ('i' != applet0) { /* not insmod */
+                /* Goto $VERSION directory */
+                xchdir(uts.release);
+        }
 
 #if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
         /* If not rmmod, parse possible module options given on command line.
@@ -758,11 +762,26 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
                 argv[1] = NULL;
 #endif
 
+        if ('i' == applet0) { /* insmod */
+                size_t len;
+                void *map;
+
+                len = MAXINT(ssize_t);
+                map = xmalloc_xopen_read_close(*argv, &len);
+                if (init_module(map, len,
+                        USE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : "")
+                        SKIP_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")
+                                ) != 0)
+                        bb_error_msg_and_die("cannot insert '%s': %s",
+                                        *argv, moderror(errno));
+                return 0;
+        }
+
         /* Try to load modprobe.dep.bb */
         load_dep_bb();
 
         /* Load/remove modules.
-         * Only rmmod loops here, insmod/modprobe has only argv[0] */
+         * Only rmmod loops here, modprobe has only argv[0] */
         do {
                 process_module(*argv++, options);
         } while (*argv);