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This patch changes 'modprobe' & co. so they honor the 'LINUX_MODULE_DIRECTORY'
environment variable, rather than looking for modules exclusively in
/lib/modules.
Patch by David Guibert, from Nixpkgs; adjusted to use 'LINUX_MODULE_DIRECTORY'
rather than 'MODULE_DIR' as the variable name.
commit cf2c95edb7918bc658f6cae93793c1949fc9cb6e
Author: David Guibert <david.guibert@gmail.com>
Date: Fri Aug 5 14:20:12 2011 +0200
introduce module-dir
diff --git a/depmod.c b/depmod.c
index a1d2f8c..9362a35 100644
--- a/depmod.c
+++ b/depmod.c
@@ -48,9 +48,6 @@
#include "testing.h"
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules/"
-#endif
#ifndef MODULE_BUILTIN_KEY
#define MODULE_BUILTIN_KEY "built-in"
@@ -1516,6 +1513,7 @@ static int parse_config_file(const char *filename,
char *line;
unsigned int linenum = 0;
FILE *cfile;
+ char *module_dir;
cfile = fopen(filename, "r");
if (!cfile) {
@@ -1525,6 +1523,10 @@ static int parse_config_file(const char *filename,
return 0;
}
+ if((module_dir = getenv("LINUX_MODULE_DIRECTORY")) == NULL) {
+ module_dir = "/lib/modules/";
+ }
+
while ((line = getline_wrapped(cfile, &linenum)) != NULL) {
char *ptr = line;
char *cmd, *modname;
@@ -1550,7 +1552,7 @@ static int parse_config_file(const char *filename,
continue;
}
nofail_asprintf(&dirname, "%s%s%s/%s", basedir,
- MODULE_DIR, kernelversion, search_path);
+ module_dir, kernelversion, search_path);
len = strlen(dirname);
*search = add_search(dirname, len, *search);
free(dirname);
@@ -1565,7 +1567,7 @@ static int parse_config_file(const char *filename,
continue;
nofail_asprintf(&pathname, "%s%s%s/%s/%s.ko", basedir,
- MODULE_DIR, kernelversion, subdir, modname);
+ module_dir, kernelversion, subdir, modname);
*overrides = add_override(pathname, *overrides);
free(pathname);
@@ -1737,6 +1739,7 @@ int main(int argc, char *argv[])
char *basedir = "", *dirname, *version;
char *system_map = NULL, *module_symvers = NULL;
int i;
+ char *module_dir;
const char *config = NULL;
if (native_endianness() == 0)
@@ -1832,7 +1835,11 @@ int main(int argc, char *argv[])
if (optind == argc)
all = 1;
- nofail_asprintf(&dirname, "%s%s%s", basedir, MODULE_DIR, version);
+ if((module_dir = getenv("LINUX_MODULE_DIRECTORY")) == NULL) {
+ module_dir = "/lib/modules/";
+ }
+
+ nofail_asprintf(&dirname, "%s%s%s", basedir, module_dir, version);
if (maybe_all) {
if (!doing_stdout && !depfile_out_of_date(dirname))
@@ -1850,7 +1857,7 @@ int main(int argc, char *argv[])
size_t len;
nofail_asprintf(&dirname, "%s%s%s/updates", basedir,
- MODULE_DIR, version);
+ module_dir, version);
len = strlen(dirname);
search = add_search(dirname, len, search);
}
diff --git a/modinfo.c b/modinfo.c
index 1dd8469..67b1041 100644
--- a/modinfo.c
+++ b/modinfo.c
@@ -19,9 +19,6 @@
#include "zlibsupport.h"
#include "testing.h"
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules"
-#endif
struct param
{
@@ -193,6 +190,11 @@ static struct elf_file *grab_module(const char *name,
struct utsname buf;
char *depname, *p, *moddir;
struct elf_file *module;
+ char *module_dir;
+
+ if((module_dir = getenv("LINUX_MODULE_DIRECTORY")) == NULL) {
+ module_dir = "/lib/modules/";
+ }
if (strchr(name, '.') || strchr(name, '/')) {
module = grab_elf_file(name);
@@ -207,9 +209,9 @@ static struct elf_file *grab_module(const char *name,
kernel = buf.release;
}
if (strlen(basedir))
- nofail_asprintf(&moddir, "%s/%s/%s", basedir, MODULE_DIR, kernel);
+ nofail_asprintf(&moddir, "%s/%s/%s", basedir, module_dir, kernel);
else
- nofail_asprintf(&moddir, "%s/%s", MODULE_DIR, kernel);
+ nofail_asprintf(&moddir, "%s/%s", module_dir, kernel);
/* Search for it in modules.dep. */
nofail_asprintf(&depname, "%s/%s", moddir, "modules.dep");
diff --git a/modprobe.c b/modprobe.c
index 5464f45..d9fbf9d 100644
--- a/modprobe.c
+++ b/modprobe.c
@@ -86,10 +86,6 @@ typedef enum
} modprobe_flags_t;
-#ifndef MODULE_DIR
-#define MODULE_DIR "/lib/modules"
-#endif
-
/**
* print_usage - output the prefered program usage
*
@@ -2136,6 +2132,7 @@ int main(int argc, char *argv[])
struct modprobe_conf conf = {};
recursion_depth = 0;
+ char *module_dir = NULL;
/* Prepend options from environment. */
argv = merge_args(getenv("MODPROBE_OPTIONS"), argv, &argc);
@@ -2233,7 +2230,11 @@ int main(int argc, char *argv[])
if (argc < optind + 1 && !dump_config && !list_only)
print_usage(argv[0]);
- nofail_asprintf(&dirname, "%s%s/%s", basedir, MODULE_DIR, buf.release);
+ if((module_dir = getenv("LINUX_MODULE_DIRECTORY")) == NULL) {
+ module_dir = "/lib/modules";
+ }
+
+ nofail_asprintf(&dirname, "%s%s/%s", basedir, module_dir, buf.release);
/* Old-style -t xxx wildcard? Only with -l. */
if (list_only) {
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