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Use opaque packet for device context.

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This commit is contained in:
Natalia Portillo
2019-10-26 16:11:19 +01:00
parent bcae241162
commit adcd54d992
17 changed files with 282 additions and 213 deletions
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96
linux/device.c
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@@ -28,21 +28,48 @@
#include <libudev.h>
#endif
int LinuxOpenDevice(const char* device_path)
void* LinuxOpenDevice(const char* device_path)
{
int fd;
LinuxDeviceContext* ctx;
fd = open(device_path, O_RDWR | O_NONBLOCK | O_CREAT);
ctx = malloc(sizeof(LinuxDeviceContext));
if((fd < 0) && (errno == EACCES || errno == EROFS)) { fd = open(device_path, O_RDONLY | O_NONBLOCK); }
if(!ctx) return NULL;
return fd;
memset(ctx, 0, sizeof(LinuxDeviceContext));
ctx->fd = open(device_path, O_RDWR | O_NONBLOCK | O_CREAT);
if((ctx->fd < 0) && (errno == EACCES || errno == EROFS)) { ctx->fd = open(device_path, O_RDONLY | O_NONBLOCK); }
if(ctx->fd <= 0)
{
free(ctx);
return NULL;
}
strncpy(ctx->device_path, device_path, 4096);
return ctx;
}
void LinuxCloseDevice(int device_fd) { close(device_fd); }
int32_t LinuxGetDeviceType(const char* device_path)
void LinuxCloseDevice(void* device_ctx)
{
LinuxDeviceContext* ctx = device_ctx;
if(!ctx) return;
close(ctx->fd);
free(ctx);
}
int32_t LinuxGetDeviceType(void* device_ctx)
{
LinuxDeviceContext* ctx = device_ctx;
if(!ctx) return -1;
#ifdef HAS_UDEV
struct udev* udev;
struct udev_device* udev_device;
@@ -54,7 +81,7 @@ int32_t LinuxGetDeviceType(const char* device_path)
if(!udev) return DICMOTE_DEVICE_TYPE_UNKNOWN;
chrptr = strrchr(device_path, '/');
chrptr = strrchr(ctx->device_path, '/');
if(chrptr == 0) return DICMOTE_DEVICE_TYPE_UNKNOWN;
chrptr++;
@@ -140,13 +167,13 @@ int32_t LinuxGetDeviceType(const char* device_path)
FILE* file;
size_t len = 4096;
if(strlen(device_path) <= 5) return dev_type;
if(strlen(ctx->device_path) <= 5) return dev_type;
if(strstr(device_path, "nvme")) return DICMOTE_DEVICE_TYPE_NVME;
if(strstr(ctx->device_path, "nvme")) return DICMOTE_DEVICE_TYPE_NVME;
dev_name = device_path + 5;
dev_name = ctx->device_path + 5;
if(strstr(device_path, "mmcblk"))
if(strstr(ctx->device_path, "mmcblk"))
{
dev_type = DICMOTE_DEVICE_TYPE_MMC;
@@ -293,23 +320,24 @@ int32_t LinuxGetDeviceType(const char* device_path)
#endif
}
int32_t LinuxGetSdhciRegisters(const char* device_path,
char** csd,
char** cid,
char** ocr,
char** scr,
uint32_t* csd_len,
uint32_t* cid_len,
uint32_t* ocr_len,
uint32_t* scr_len)
int32_t LinuxGetSdhciRegisters(void* device_ctx,
char** csd,
char** cid,
char** ocr,
char** scr,
uint32_t* csd_len,
uint32_t* cid_len,
uint32_t* ocr_len,
uint32_t* scr_len)
{
char* tmp_string;
char* sysfs_path_csd;
char* sysfs_path_cid;
char* sysfs_path_scr;
char* sysfs_path_ocr;
size_t len;
FILE* file;
LinuxDeviceContext* ctx = device_ctx;
char* tmp_string;
char* sysfs_path_csd;
char* sysfs_path_cid;
char* sysfs_path_scr;
char* sysfs_path_ocr;
size_t len;
FILE* file;
*csd = NULL;
*cid = NULL;
*ocr = NULL;
@@ -320,9 +348,11 @@ int32_t LinuxGetSdhciRegisters(const char* device_path,
*scr_len = 0;
size_t n = 1026;
if(strncmp(device_path, "/dev/mmcblk", 11) != 0) return 0;
if(!ctx) return -1;
len = strlen(device_path) + 19;
if(strncmp(ctx->device_path, "/dev/mmcblk", 11) != 0) return 0;
len = strlen(ctx->device_path) + 19;
sysfs_path_csd = malloc(len);
sysfs_path_cid = malloc(len);
sysfs_path_scr = malloc(len);
@@ -343,9 +373,9 @@ int32_t LinuxGetSdhciRegisters(const char* device_path,
memset(sysfs_path_cid, 0, len);
memset(sysfs_path_scr, 0, len);
memset(sysfs_path_ocr, 0, len);
memset(tmp_string, 0, strlen(device_path) - 5);
memset(tmp_string, 0, strlen(ctx->device_path) - 5);
memcpy(tmp_string, device_path + 5, strlen(device_path) - 5);
memcpy(tmp_string, ctx->device_path + 5, strlen(ctx->device_path) - 5);
snprintf(sysfs_path_csd, len, "/sys/block/%s/device/csd", tmp_string);
snprintf(sysfs_path_cid, len, "/sys/block/%s/device/cid", tmp_string);
snprintf(sysfs_path_scr, len, "/sys/block/%s/device/scr", tmp_string);