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-rw-r--r--modutils/modprobe-small.c72
1 files changed, 39 insertions, 33 deletions
diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 0fc9ea4..12e0993 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -13,15 +13,14 @@
//config:config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
//config: bool "Accept module options on modprobe command line"
//config: default y
-//config: depends on MODPROBE_SMALL
-//config: select PLATFORM_LINUX
+//config: depends on MODPROBE_SMALL && (INSMOD || MODPROBE)
//config: help
//config: Allow insmod and modprobe take module options from command line.
//config:
//config:config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
//config: bool "Skip loading of already loaded modules"
//config: default y
-//config: depends on MODPROBE_SMALL
+//config: depends on MODPROBE_SMALL && (DEPMOD || INSMOD || MODPROBE)
//config: help
//config: Check if the module is already loaded.
@@ -59,6 +58,14 @@
#define DEPFILE_BB CONFIG_DEFAULT_DEPMOD_FILE".bb"
+#define ONLY_APPLET (ENABLE_MODPROBE + ENABLE_DEPMOD + ENABLE_INSMOD \
+ + ENABLE_LSMOD + ENABLE_RMMOD <= 1)
+#define is_modprobe (ENABLE_MODPROBE && (ONLY_APPLET || applet_name[0] == 'm'))
+#define is_depmod (ENABLE_DEPMOD && (ONLY_APPLET || applet_name[0] == 'd'))
+#define is_insmod (ENABLE_INSMOD && (ONLY_APPLET || applet_name[0] == 'i'))
+#define is_lsmod (ENABLE_LSMOD && (ONLY_APPLET || applet_name[0] == 'l'))
+#define is_rmmod (ENABLE_RMMOD && (ONLY_APPLET || applet_name[0] == 'r'))
+
enum {
OPT_q = (1 << 0), /* be quiet */
OPT_r = (1 << 1), /* module removal instead of loading */
@@ -361,6 +368,8 @@ static FAST_FUNC int fileAction(const char *pathname,
{
int cur;
const char *fname;
+ bool is_remove = (ENABLE_RMMOD && ONLY_APPLET)
+ || ((ENABLE_RMMOD || ENABLE_MODPROBE) && (option_mask32 & OPT_r));
pathname += 2; /* skip "./" */
fname = bb_get_last_path_component_nostrip(pathname);
@@ -385,7 +394,7 @@ static FAST_FUNC int fileAction(const char *pathname,
if (parse_module(&modinfo[cur], pathname) != 0)
return TRUE; /* failed to open/read it, no point in trying loading */
- if (!(option_mask32 & OPT_r)) {
+ if (!is_remove) {
if (load_module(pathname, module_load_options) == 0) {
/* Load was successful, there is nothing else to do.
* This can happen ONLY for "top-level" module load,
@@ -666,7 +675,8 @@ static int process_module(char *name, const char *cmdline_options)
module_info **infovec;
module_info *info;
int infoidx;
- int is_remove = (option_mask32 & OPT_r) != 0;
+ bool is_remove = (ENABLE_RMMOD && ONLY_APPLET)
+ || ((ENABLE_RMMOD || ENABLE_MODPROBE) && (option_mask32 & OPT_r));
int exitcode = EXIT_SUCCESS;
dbg1_error_msg("process_module('%s','%s')", name, cmdline_options);
@@ -675,9 +685,8 @@ static int process_module(char *name, const char *cmdline_options)
dbg1_error_msg("already_loaded:%d is_remove:%d", already_loaded(name), is_remove);
- if (applet_name[0] == 'r') {
- /* rmmod.
- * Does not remove dependencies, no need to scan, just remove.
+ if (is_rmmod) {
+ /* Does not remove dependencies, no need to scan, just remove.
* (compat note: this allows and strips .ko suffix)
*/
rmmod(name);
@@ -743,7 +752,7 @@ static int process_module(char *name, const char *cmdline_options)
if (!infovec) {
/* both dirscan and find_alias found nothing */
- if (!is_remove && applet_name[0] != 'd') /* it wasn't rmmod or depmod */
+ if (!is_remove && !is_depmod) /* it wasn't rmmod or depmod */
bb_error_msg("module '%s' not found", name);
//TODO: _and_die()? or should we continue (un)loading modules listed on cmdline?
goto ret;
@@ -926,11 +935,10 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
{
int exitcode;
struct utsname uts;
- char applet0 = applet_name[0];
- IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(char *options;)
+ IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(char *options = NULL;)
/* are we lsmod? -> just dump /proc/modules */
- if (ENABLE_LSMOD && 'l' == applet0) {
+ if (is_lsmod) {
xprint_and_close_file(xfopen_for_read("/proc/modules"));
return EXIT_SUCCESS;
}
@@ -940,14 +948,13 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
/* Prevent ugly corner cases with no modules at all */
modinfo = xzalloc(sizeof(modinfo[0]));
- if (!ENABLE_INSMOD || 'i' != applet0) { /* not insmod */
+ if (!is_insmod) {
/* Goto modules directory */
xchdir(CONFIG_DEFAULT_MODULES_DIR);
}
uname(&uts); /* never fails */
- /* depmod? */
- if (ENABLE_DEPMOD && 'd' == applet0) {
+ if (is_depmod) {
/* Supported:
* -n: print result to stdout
* -a: process all modules (default)
@@ -978,28 +985,28 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
return !wrote_dep_bb_ok;
}
- /* insmod, modprobe, rmmod require at least one argument */
+#if ENABLE_MODPROBE || ENABLE_INSMOD || ENABLE_RMMOD
+ /* modprobe, insmod, rmmod require at least one argument */
opt_complementary = "-1";
/* only -q (quiet) and -r (rmmod),
* the rest are accepted and ignored (compat) */
getopt32(argv, "qrfsvwb");
argv += optind;
- /* are we rmmod? -> simulate modprobe -r */
- if (ENABLE_RMMOD && 'r' == applet0) {
- option_mask32 |= OPT_r;
- }
-
- if (!ENABLE_INSMOD || 'i' != applet0) { /* not insmod */
+ if (!is_insmod) {
/* Goto $VERSION directory */
xchdir(uts.release);
}
-#if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
+ /* are we rmmod? -> simulate modprobe -r, but don't bother the flag if
+ * there're no other applets here */
+ if (is_rmmod) {
+ if (!ONLY_APPLET)
+ option_mask32 |= OPT_r;
+ } else if (!ENABLE_MODPROBE || !(option_mask32 & OPT_r)) {
+# if ENABLE_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
/* If not rmmod/-r, parse possible module options given on command line.
* insmod/modprobe takes one module name, the rest are parameters. */
- options = NULL;
- if (!(option_mask32 & OPT_r)) {
char **arg = argv;
while (*++arg) {
/* Enclose options in quotes */
@@ -1008,13 +1015,12 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
free(s);
*arg = NULL;
}
- }
-#else
- if (!(option_mask32 & OPT_r))
+# else
argv[1] = NULL;
-#endif
+# endif
+ }
- if (ENABLE_INSMOD && 'i' == applet0) { /* insmod */
+ if (is_insmod) {
size_t len;
void *map;
@@ -1023,8 +1029,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
if (!map)
bb_perror_msg_and_die("can't read '%s'", *argv);
if (init_module(map, len,
- IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : "")
- IF_NOT_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE("")
+ (IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(options ? options : ) "")
) != 0
) {
bb_error_msg_and_die("can't insert '%s': %s",
@@ -1034,7 +1039,7 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
}
/* Try to load modprobe.dep.bb */
- if (!ENABLE_RMMOD || 'r' != applet0) { /* not rmmod */
+ if (!is_rmmod) {
load_dep_bb();
}
@@ -1049,4 +1054,5 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv)
IF_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE(free(options);)
}
return exitcode;
+#endif /* MODPROBE || INSMOD || RMMOD */
}
generated by cgit v1.1 at 2024-12-25 05:14:22 +0000