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[c-host] initial agnostic option api and parser

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This commit is contained in:
Geoffrey McRae 2019-05-09 22:06:58 +10:00
parent 22f9fa3938
commit e7345b9711
9 changed files with 465 additions and 101 deletions
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80
c-host/platform/Linux/src/platform.c
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@ -19,6 +19,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "interface/platform.h"
#include "common/debug.h"
#include "common/option.h"
#include <assert.h>
#include <getopt.h>
@ -40,18 +41,8 @@ struct app
void * shmMap;
};
struct params
{
const char * shmDevice;
};
static struct app app;
static struct params params =
{
.shmDevice = "uio0"
};
struct osThreadHandle
{
const char * name;
@ -71,39 +62,47 @@ int main(int argc, char * argv[])
{
app.executable = argv[0];
static struct option longOptions[] =
struct Option options[] =
{
{"shmDevice", required_argument, 0, 'f'},
{0, 0, 0, 0}
{
.module = "os",
.name = "shmDevice",
.description = "The IVSHMEM device to use",
.value = {
.type = OPTION_TYPE_STRING,
.v.x_string = "uio0"
},
.validator = NULL,
.printHelp = NULL
},
{0}
};
int optionIndex = 0;
while(true)
{
int c = getopt_long(argc, argv, "f:", longOptions, &optionIndex);
if (c == -1)
break;
option_register(options);
switch(c)
{
case 'f':
params.shmDevice = optarg;
break;
}
}
int result = app_main(argc, argv);
os_shmemUnmap();
close(app.shmFD);
return result;
}
bool app_init()
{
const char * shmDevice = option_get_string("os", "shmDevice");
// check the deice name
{
char file[100] = "/sys/class/uio/";
strncat(file, params.shmDevice, sizeof(file) - 1);
strncat(file, "/name" , sizeof(file) - 1);
strncat(file, shmDevice, sizeof(file) - 1);
strncat(file, "/name" , sizeof(file) - 1);
int fd = open(file, O_RDONLY);
if (fd < 0)
{
DEBUG_ERROR("Failed to open: %s", file);
DEBUG_ERROR("Did you remmeber to modprobe the kvmfr module?");
return -1;
return false;
}
char name[32];
@ -112,7 +111,7 @@ int main(int argc, char * argv[])
{
DEBUG_ERROR("Failed to read: %s", file);
close(fd);
return -1;
return false;
}
name[len] = '\0';
close(fd);
@ -126,21 +125,21 @@ int main(int argc, char * argv[])
if (strcmp(name, "KVMFR") != 0)
{
DEBUG_ERROR("Device is not a KVMFR device \"%s\" reports as: %s", file, name);
return -1;
return false;
}
}
// get the device size
{
char file[100] = "/sys/class/uio/";
strncat(file, params.shmDevice , sizeof(file) - 1);
strncat(file, shmDevice , sizeof(file) - 1);
strncat(file, "/maps/map0/size", sizeof(file) - 1);
int fd = open(file, O_RDONLY);
if (fd < 0)
{
DEBUG_ERROR("Failed to open: %s", file);
return -1;
return false;
}
char size[32];
@ -149,7 +148,7 @@ int main(int argc, char * argv[])
{
DEBUG_ERROR("Failed to read: %s", file);
close(fd);
return -1;
return false;
}
size[len] = '\0';
close(fd);
@ -160,13 +159,13 @@ int main(int argc, char * argv[])
// open the device
{
char file[100] = "/dev/";
strncat(file, params.shmDevice, sizeof(file) - 1);
strncat(file, shmDevice, sizeof(file) - 1);
app.shmFD = open(file, O_RDWR, (mode_t)0600);
app.shmMap = MAP_FAILED;
if (app.shmFD < 0)
{
DEBUG_ERROR("Failed to open: %s", file);
return -1;
return false;
}
DEBUG_INFO("KVMFR Device : %s", file);
@ -174,11 +173,7 @@ int main(int argc, char * argv[])
signal(SIGINT, sigHandler);
int result = app_main(argc, argv);
os_shmemUnmap();
close(app.shmFD);
return result;
return true;
}
const char * os_getExecutable()
@ -198,7 +193,8 @@ bool os_shmemMmap(void **ptr)
app.shmMap = mmap(0, app.shmSize, PROT_READ | PROT_WRITE, MAP_SHARED, app.shmFD, 0);
if (app.shmMap == MAP_FAILED)
{
DEBUG_ERROR("Failed to map the shared memory device: %s", params.shmDevice);
const char * shmDevice = option_get_string("os", "shmDevice");
DEBUG_ERROR("Failed to map the shared memory device: %s", shmDevice);
return false;
}
}