ctl.c

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#include <kernel/fs/ctl.h>
 
#include <kernel/mem/pmm.h>
#include <kernel/sched/thread.h>
 
#include <errno.h>
#include <sys/argsplit.h>
 
uint64_t ctl_dispatch(ctl_array_t ctls, file_t* file, const void* buffer, uint64_t count)
{
    if (ctls == NULL || file == NULL || buffer == NULL || count == 0)
    {
        errno = EINVAL;
        return ERR;
    }
 
    if (count > MAX_PATH)
    {
        errno = E2BIG;
        return ERR;
    }
 
    uint8_t argBuffer[MAX_PATH];
 
    uint64_t argc;
    const char** argv = argsplit_buf(argBuffer, MAX_PATH, buffer, count, &argc);
    if (argv == NULL)
    {
        return ERR;
    }
    if (argc == 0)
    {
        errno = EUNKNOWNCTL;
        return ERR;
    }
 
    ctl_t* ctl = &ctls[0];
    while (ctl->name != NULL)
    {
        if (strcmp(ctl->name, argv[0]) == 0)
        {
            if (argc < ctl->argcMin || argc > ctl->argcMax)
            {
                errno = EUNKNOWNCTL;
                return ERR;
            }
 
            if (ctl->func(file, argc, argv) == ERR)
            {
                return ERR;
            }
            return count;
        }
 
        ctl++;
    }
 
    errno = ENOENT;
    return ERR;
}