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Load and unload resources

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This call will mmap all the index files and in future some of the work
done in ctx creation can be put here.
This commit is contained in:
Lucas De Marchi 2011-12-08 14:59:51 -02:00
parent 5109f2b422
commit 33bb69b943
3 changed files with 49 additions and 3 deletions
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44
libkmod/libkmod.c
View File

@ -73,6 +73,7 @@ struct kmod_ctx {
char *dirname;
struct kmod_config *config;
struct kmod_hash *modules_by_name;
struct index_mm *indexes[_KMOD_INDEX_LAST];
};
void kmod_log(const struct kmod_ctx *ctx,
@ -257,11 +258,15 @@ KMOD_EXPORT struct kmod_ctx *kmod_unref(struct kmod_ctx *ctx)
if (--ctx->refcount > 0)
return ctx;
INFO(ctx, "context %p released\n", ctx);
kmod_unload_resources(ctx);
kmod_hash_free(ctx->modules_by_name);
free(ctx->dirname);
if (ctx->config)
kmod_config_free(ctx->config);
free(ctx);
return NULL;
}
@ -541,3 +546,42 @@ fail:
*output = NULL;
return -ENOMEM;
}
KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
{
size_t i;
if (ctx == NULL)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(index_files); i++) {
if (ctx->indexes[i] == NULL) {
const char *fn = index_files[i];
ctx->indexes[i] = index_mm_open(ctx, fn, true);
if (ctx->indexes[i] == NULL)
goto fail;
}
}
return 0;
fail:
kmod_unload_resources(ctx);
return -ENOMEM;
}
KMOD_EXPORT void kmod_unload_resources(struct kmod_ctx *ctx)
{
size_t i;
if (ctx == NULL)
return;
for (i = 0; i < ARRAY_SIZE(index_files); i++) {
if (ctx->indexes[i] != NULL) {
index_mm_close(ctx->indexes[i]);
ctx->indexes[i] = NULL;
}
}
}

2
libkmod/libkmod.h
View File

@ -48,6 +48,8 @@ int kmod_get_log_priority(const struct kmod_ctx *ctx);
void kmod_set_log_priority(struct kmod_ctx *ctx, int priority);
void *kmod_get_userdata(const struct kmod_ctx *ctx);
void kmod_set_userdata(struct kmod_ctx *ctx, const void *userdata);
int kmod_load_resources(struct kmod_ctx *ctx);
void kmod_unload_resources(struct kmod_ctx *ctx);
/*
* kmod_list

6
libkmod/libkmod.sym
View File

@ -13,6 +13,9 @@ global:
kmod_list_prev;
kmod_loaded_get_list;
kmod_load_resources;
kmod_unload_resources;
kmod_module_new_from_name;
kmod_module_new_from_path;
kmod_module_new_from_lookup;
@ -21,7 +24,6 @@ global:
kmod_module_unref_list;
kmod_module_remove_module;
kmod_module_insert_module;
kmod_module_get_dependencies;
kmod_module_get_module;
@ -37,9 +39,7 @@ global:
kmod_module_section_free_list;
kmod_module_section_get_name;
kmod_module_section_get_address;
kmod_module_get_holders;
kmod_module_get_size;
local:
*;