zyxel-revert/context.c

52 lines
870 B
C

#include <stdlib.h>
#include <string.h>
#include "context.h"
#include "filedata.h"
#include "list.h"
#include "logging.h"
static LIST_HEAD(context_list);
struct context * create_context(const char *filename)
{
struct context *ctx = malloc(sizeof(struct context));
if (ctx == NULL) {
log_print(LOG_WARN, "create_context(): out of memory");
return NULL;
}
memset(ctx, 0, sizeof(struct context));
ctx->file = get_filedata(filename);
if (ctx->file == NULL) {
free(ctx);
return NULL;
}
list_add(&ctx->list, &context_list);
return ctx;
}
int destroy_context(struct context *ctx)
{
list_del(&ctx->list);
if (ctx->dev_close != NULL)
ctx->dev_close(ctx);
free(ctx->file);
free(ctx);
return 0;
}
int context_close(void)
{
struct context *ctx, *tmp;
list_for_each_entry_safe(ctx, tmp, &context_list, list)
destroy_context(ctx);
return 0;
}