3cb9b42af3
Unfortunately this needs libshared to link to libkmod. Before it was linked into systemd-udevd, udevadm, and systemd each seperately. On most systems this doesn't make much difference, because at least systemd would be installed, but it might not be in small chroots. It is a small library, so I hope this is not a big issue.
65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include "module-util.h"
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int module_load_and_warn(struct kmod_ctx *ctx, const char *module) {
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const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST;
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struct kmod_list *itr;
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_cleanup_(kmod_module_unref_listp) struct kmod_list *modlist = NULL;
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int r = 0;
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log_debug("Loading module: %s", module);
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r = kmod_module_new_from_lookup(ctx, module, &modlist);
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if (r < 0)
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return log_error_errno(r, "Failed to lookup module alias '%s': %m", module);
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if (!modlist) {
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log_error("Failed to find module '%s'", module);
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return -ENOENT;
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}
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kmod_list_foreach(itr, modlist) {
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_cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL;
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int state, err;
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mod = kmod_module_get_module(itr);
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state = kmod_module_get_initstate(mod);
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switch (state) {
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case KMOD_MODULE_BUILTIN:
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log_info("Module '%s' is builtin", kmod_module_get_name(mod));
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break;
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case KMOD_MODULE_LIVE:
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log_debug("Module '%s' is already loaded", kmod_module_get_name(mod));
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break;
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default:
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err = kmod_module_probe_insert_module(mod, probe_flags,
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NULL, NULL, NULL, NULL);
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if (err == 0)
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log_info("Inserted module '%s'", kmod_module_get_name(mod));
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else if (err == KMOD_PROBE_APPLY_BLACKLIST)
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log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
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else {
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assert(err < 0);
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log_full_errno(err == ENODEV ? LOG_NOTICE :
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err == ENOENT ? LOG_WARNING :
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LOG_ERR,
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err,
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"Failed to insert module '%s': %m",
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kmod_module_get_name(mod));
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if (!IN_SET(err, ENODEV, ENOENT))
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r = err;
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}
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}
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}
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return r;
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}
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