Author: tsoome
Date: Sun Apr 7 13:36:17 2019
New Revision: 346007
URL: https://svnweb.freebsd.org/changeset/base/346007
Log:
loader: add file_remove() function to undo file_insert_tail().
346002 did miss the fact that we do not only undo the loadaddr, but also
we need to remove the inserted module. Implement file_remove() to do the job.
MFC after: 1w
Modified:
head/stand/common/module.c
Modified: head/stand/common/module.c
==============================================================================
--- head/stand/common/module.c Sun Apr 7 13:26:45 2019 (r346006)
+++ head/stand/common/module.c Sun Apr 7 13:36:17 2019 (r346007)
@@ -52,16 +52,18 @@ struct moduledir {
STAILQ_ENTRY(moduledir) d_link;
};
-static int file_load(char *filename, vm_offset_t dest,
struct preloaded_file **result);
-static int file_load_dependencies(struct preloaded_file
*base_mod);
-static char * file_search(const char *name, char **extlist);
-static struct kernel_module * file_findmodule(struct preloaded_file *fp, char
*modname, struct mod_depend *verinfo);
-static int file_havepath(const char *name);
-static char *mod_searchmodule(char *name, struct mod_depend
*verinfo);
-static void file_insert_tail(struct preloaded_file *mp);
-struct file_metadata* metadata_next(struct file_metadata *base_mp,
int type);
-static void moduledir_readhints(struct moduledir *mdp);
-static void moduledir_rebuild(void);
+static int file_load(char *, vm_offset_t, struct preloaded_file **);
+static int file_load_dependencies(struct preloaded_file *);
+static char * file_search(const char *, char **);
+static struct kernel_module *file_findmodule(struct preloaded_file *, char *,
+ struct mod_depend *);
+static int file_havepath(const char *);
+static char *mod_searchmodule(char *, struct mod_depend *);
+static void file_insert_tail(struct preloaded_file *);
+static void file_remove(struct preloaded_file *);
+struct file_metadata *metadata_next(struct file_metadata *, int);
+static void moduledir_readhints(struct moduledir *);
+static void moduledir_rebuild(void);
/* load address should be tweaked by first module loaded (kernel) */
static vm_offset_t loadaddr = 0;
@@ -70,10 +72,11 @@ static vm_offset_t loadaddr = 0;
static const char *default_searchpath =
"/boot/kernel;/boot/modules;/boot/dtb";
#else
-static const char *default_searchpath ="/boot/kernel;/boot/modules";
+static const char *default_searchpath = "/boot/kernel;/boot/modules";
#endif
-static STAILQ_HEAD(, moduledir) moduledir_list =
STAILQ_HEAD_INITIALIZER(moduledir_list);
+static STAILQ_HEAD(, moduledir) moduledir_list =
+ STAILQ_HEAD_INITIALIZER(moduledir_list);
struct preloaded_file *preloaded_files = NULL;
@@ -591,10 +594,10 @@ mod_loadkld(const char *kldname, int argc, char *argv[
fp->f_args = unargv(argc, argv);
loadaddr_saved = loadaddr;
loadaddr = fp->f_addr + fp->f_size;
- file_insert_tail(fp); /* Add to the list of loaded
files */
+ file_insert_tail(fp); /* Add to the list of loaded files */
if (file_load_dependencies(fp) != 0) {
err = ENOENT;
- last_file->f_next = NULL;
+ file_remove(fp);
loadaddr = loadaddr_saved;
fp = NULL;
break;
@@ -998,6 +1001,29 @@ file_insert_tail(struct preloaded_file *fp)
for (cm = preloaded_files; cm->f_next != NULL; cm = cm->f_next)
;
cm->f_next = fp;
+ }
+}
+
+/*
+ * Remove module from the chain
+ */
+static void
+file_remove(struct preloaded_file *fp)
+{
+ struct preloaded_file *cm;
+
+ if (preloaded_files == NULL)
+ return;
+
+ if (preloaded_files == fp) {
+ preloaded_files = fp->f_next;
+ return;
+ }
+ for (cm = preloaded_files; cm->f_next != NULL; cm = cm->f_next) {
+ if (cm->f_next == fp) {
+ cm->f_next = fp->f_next;
+ return;
+ }
}
}
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