Changeset e72fb34 in mainline


Ignore:
Timestamp:
2011-03-30T14:26:54Z (13 years ago)
Author:
Vojtech Horky <vojtechhorky@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update
Children:
0864122
Parents:
fc8c2b6
Message:

Add getting device handle by class path to libc

Location:
uspace/lib/c
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • uspace/lib/c/generic/devman.c

    rfc8c2b6 re72fb34  
    329329}
    330330
     331int devman_device_get_handle_by_class(const char *classname,
     332    const char *devname, devman_handle_t *handle, unsigned int flags)
     333{
     334        int phone = devman_get_phone(DEVMAN_CLIENT, flags);
     335
     336        if (phone < 0)
     337                return phone;
     338
     339        async_serialize_start();
     340
     341        ipc_call_t answer;
     342        aid_t req = async_send_1(phone, DEVMAN_DEVICE_GET_HANDLE_BY_CLASS,
     343            flags, &answer);
     344
     345        sysarg_t retval = async_data_write_start(phone, classname,
     346            str_size(classname));
     347        if (retval != EOK) {
     348                async_wait_for(req, NULL);
     349                async_serialize_end();
     350                return retval;
     351        }
     352        retval = async_data_write_start(phone, devname,
     353            str_size(devname));
     354        if (retval != EOK) {
     355                async_wait_for(req, NULL);
     356                async_serialize_end();
     357                return retval;
     358        }
     359
     360        async_wait_for(req, &retval);
     361
     362        async_serialize_end();
     363
     364        if (retval != EOK) {
     365                if (handle != NULL)
     366                        *handle = (devman_handle_t) -1;
     367                return retval;
     368        }
     369
     370        if (handle != NULL)
     371                *handle = (devman_handle_t) IPC_GET_ARG1(answer);
     372
     373        return retval;
     374}
     375
    331376
    332377/** @}
  • uspace/lib/c/include/devman.h

    rfc8c2b6 re72fb34  
    5353extern int devman_device_get_handle(const char *, devman_handle_t *,
    5454    unsigned int);
     55extern int devman_device_get_handle_by_class(const char *, const char *,
     56    devman_handle_t *, unsigned int);
    5557
    5658extern int devman_add_device_to_class(devman_handle_t, const char *);
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