uvos/libeismultiplexer
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

usb_shm: hide symbols so that ldd dosent use the symbols from another lib

Browse source
This commit is contained in:
Carl Philipp Klemm 2024-05-07 13:02:49 +02:00
parent 6a6471125b
commit 7169533d05
1 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
usbshm.c
View file

@ -44,12 +44,13 @@
static int object_counter = 0; static int object_counter = 0;
static struct libusb_context* context = NULL; static struct libusb_context* context = NULL;
__attribute__ ((visibility ("hidden")))
static int usbshm_init(struct usbshm* instance) static int usbshm_init(struct usbshm* instance)
{ {
int ret = 0; int ret = 0;
if(object_counter == 0) if(object_counter == 0)
ret = libusb_init(&context) < 0 ? USBSHM_ERROR_ERR : 0; ret = libusb_init(&context) < 0 ? USBSHM_ERROR_ERR : 0;
if(ret == 0) if(ret >= 0)
{ {
++object_counter; ++object_counter;
instance->handle = NULL; instance->handle = NULL;
@ -63,6 +64,7 @@ static int usbshm_init(struct usbshm* instance)
return ret < 0 ? USBSHM_ERROR_ERR : 0; return ret < 0 ? USBSHM_ERROR_ERR : 0;
} }
__attribute__ ((visibility ("hidden")))
static void usbshm_exit(void) static void usbshm_exit(void)
{ {
if(--object_counter == 0) if(--object_counter == 0)
@ -72,6 +74,7 @@ static void usbshm_exit(void)
} }
} }
__attribute__ ((visibility ("hidden")))
void usbshm_close(struct usbshm* instance) void usbshm_close(struct usbshm* instance)
{ {
if(!instance->handle) if(!instance->handle)
@ -86,11 +89,13 @@ void usbshm_close(struct usbshm* instance)
pthread_mutex_destroy(instance->mutex); pthread_mutex_destroy(instance->mutex);
} }
__attribute__ ((visibility ("hidden")))
bool usbshm_is_open(struct usbshm* instance) bool usbshm_is_open(struct usbshm* instance)
{ {
return instance->handle != NULL; return instance->handle != NULL;
} }
__attribute__ ((visibility ("hidden")))
int usbshm_open(struct usbshm* instance, int vendorID, int productID, const unsigned char* serial) int usbshm_open(struct usbshm* instance, int vendorID, int productID, const unsigned char* serial)
{ {
int ret = usbshm_init(instance); int ret = usbshm_init(instance);
@ -166,14 +171,16 @@ int usbshm_open(struct usbshm* instance, int vendorID, int productID, const unsi
return errorCode; return errorCode;
} }
__attribute__ ((visibility ("hidden")))
bool usbshm_usbshm_is_open(struct usbshm* instance) bool usbshm_usbshm_is_open(struct usbshm* instance)
{; {
pthread_mutex_lock(instance->mutex); pthread_mutex_lock(instance->mutex);
bool ret = instance->handle != NULL; bool ret = instance->handle != NULL;
pthread_mutex_unlock(instance->mutex); pthread_mutex_unlock(instance->mutex);
return ret; return ret;
} }
__attribute__ ((visibility ("hidden")))
void usbshm_reset(struct usbshm* instance) void usbshm_reset(struct usbshm* instance)
{ {
if(!instance->handle) if(!instance->handle)
@ -183,6 +190,7 @@ void usbshm_reset(struct usbshm* instance)
pthread_mutex_unlock(instance->mutex); pthread_mutex_unlock(instance->mutex);
} }
__attribute__ ((visibility ("hidden")))
void usbshm_reopen(struct usbshm* instance) void usbshm_reopen(struct usbshm* instance)
{ {
usbshm_reset(instance); usbshm_reset(instance);
@ -192,6 +200,7 @@ void usbshm_reopen(struct usbshm* instance)
usbshm_open(instance, instance->vendorID, instance->productID, (unsigned char*)serial); usbshm_open(instance, instance->vendorID, instance->productID, (unsigned char*)serial);
} }
__attribute__ ((visibility ("hidden")))
int usbshm_write_control_transfer(struct usbshm* instance, const uint8_t request, int usbshm_write_control_transfer(struct usbshm* instance, const uint8_t request,
uint8_t* buffer, const uint8_t length, uint8_t* buffer, const uint8_t length,
const uint16_t wValue, const uint16_t wIndex) const uint16_t wValue, const uint16_t wIndex)
@ -215,6 +224,7 @@ int usbshm_write_control_transfer(struct usbshm* instance, const uint8_t request
return ret; return ret;
} }
__attribute__ ((visibility ("hidden")))
int usbshm_read_control_transfer(struct usbshm* instance, const uint8_t request, const uint16_t wValue, const uint16_t wIndex, uint8_t* buffer, const uint16_t length) int usbshm_read_control_transfer(struct usbshm* instance, const uint8_t request, const uint16_t wValue, const uint16_t wIndex, uint8_t* buffer, const uint16_t length)
{ {
if(!instance->handle) if(!instance->handle)