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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/shared/module-util.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/shared/module-util.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/shared/module-util.c b/src/shared/module-util.c new file mode 100644 index 0000000..1526f59 --- /dev/null +++ b/src/shared/module-util.c @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> + +#include "module-util.h" + +int module_load_and_warn(struct kmod_ctx *ctx, const char *module, bool verbose) { + const int probe_flags = KMOD_PROBE_APPLY_BLACKLIST; + struct kmod_list *itr; + _cleanup_(kmod_module_unref_listp) struct kmod_list *modlist = NULL; + int r; + + /* verbose==true means we should log at non-debug level if we + * fail to find or load the module. */ + + log_debug("Loading module: %s", module); + + r = kmod_module_new_from_lookup(ctx, module, &modlist); + if (r < 0) + return log_full_errno(verbose ? LOG_ERR : LOG_DEBUG, r, + "Failed to look up module alias '%s': %m", module); + + if (!modlist) + return log_full_errno(verbose ? LOG_ERR : LOG_DEBUG, + SYNTHETIC_ERRNO(ENOENT), + "Failed to find module '%s'", module); + + kmod_list_foreach(itr, modlist) { + _cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL; + int state, err; + + mod = kmod_module_get_module(itr); + state = kmod_module_get_initstate(mod); + + switch (state) { + case KMOD_MODULE_BUILTIN: + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "Module '%s' is built in", kmod_module_get_name(mod)); + break; + + case KMOD_MODULE_LIVE: + log_debug("Module '%s' is already loaded", kmod_module_get_name(mod)); + break; + + default: + err = kmod_module_probe_insert_module(mod, probe_flags, + NULL, NULL, NULL, NULL); + if (err == 0) + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "Inserted module '%s'", kmod_module_get_name(mod)); + else if (err == KMOD_PROBE_APPLY_BLACKLIST) + log_full(verbose ? LOG_INFO : LOG_DEBUG, + "Module '%s' is deny-listed", kmod_module_get_name(mod)); + else { + assert(err < 0); + + log_full_errno(!verbose ? LOG_DEBUG : + err == -ENODEV ? LOG_NOTICE : + err == -ENOENT ? LOG_WARNING : + LOG_ERR, + err, + "Failed to insert module '%s': %m", + kmod_module_get_name(mod)); + if (!IN_SET(err, -ENODEV, -ENOENT)) + r = err; + } + } + } + + return r; +} |