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modprobe: show if module is in kernel

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Now with './tools/modprobe --show-depends ahci' (ahci is builtin) we have the following
output:

$ ./tools/modprobe --show-depends ahci
builtin ahci

Just like modprobe from m-i-t. Previously we had:

$ ./tools/modprobe --show-depends ahci
FATAL: Module ahci not found.
This commit is contained in:
Lucas De Marchi 2012-01-11 21:48:08 -02:00
parent efd2cec66e
commit 92122614b2
2 changed files with 44 additions and 6 deletions
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16
TODO
View File

@ -19,8 +19,16 @@ Features:
* provide 1:1 compatibility with module-init-tools's modprobe
- dump configuration
- deal with dependency loop
- break dependency loop when all it needs is to check if the module is
already loaded
- fix dependency listing in --show-depends
$ modprobe -S 3.2.0-2-ARCH --show-depends ahci
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/ata/libata.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/ata/libata.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/ata/libahci.ko.gz
insmod /lib/modules/3.2.0-2-ARCH/kernel/drivers/ata/ahci.ko.gz
* Add manpages: copy them from module-init-tools and make the necessary changes
@ -84,6 +92,10 @@ modprobe
* kmod-modprobe doesn't parse 'config' and 'include' commands in configuration
files.
* we don't use <module-dir>/modules.builtin{,.bin} indexes. Instead we rely on
module appearing on /sys/modules/* without a initstate file to determine if
it is builtin.
depmod
------

34
tools/kmod-modprobe.c
View File

@ -869,6 +869,34 @@ static int insmod_path(struct kmod_ctx *ctx, const char *path,
return err;
}
static int handle_failed_lookup(struct kmod_ctx *ctx, const char *alias)
{
struct kmod_module *mod;
int state, err;
DBG("lookup failed - trying to check if it's builtin\n");
err = kmod_module_new_from_name(ctx, alias, &mod);
if (err < 0)
return err;
state = kmod_module_get_initstate(mod);
kmod_module_unref(mod);
if (state != KMOD_MODULE_BUILTIN) {
LOG("Module %s not found.\n", alias);
return -ENOENT;
}
if (first_time) {
LOG("Module %s already in kernel (builtin).\n", alias);
return -ENOENT;
}
SHOW("builtin %s\n", alias);
return 0;
}
static int insmod_alias(struct kmod_ctx *ctx, const char *alias,
const char *extra_options)
{
@ -879,10 +907,8 @@ static int insmod_alias(struct kmod_ctx *ctx, const char *alias,
if (err < 0)
return err;
if (list == NULL) {
LOG("Module %s not found.\n", alias);
return -ENOENT;
}
if (list == NULL)
return handle_failed_lookup(ctx, alias);
if (use_blacklist) {
struct kmod_list *filtered = NULL;