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core/embed/unix: fix sdcard_init behaviour

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Pavol Rusnak 2019-10-30 14:40:49 +01:00
parent 68a3094b0a
commit 58a865dd05
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1 changed files with 7 additions and 4 deletions
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core/embed/unix/sdcard.c
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@ -35,20 +35,23 @@
#define SDCARD_SIZE (64 * 1024 * 1024) #define SDCARD_SIZE (64 * 1024 * 1024)
static uint8_t *sdcard_buffer; static uint8_t *sdcard_buffer = NULL;
static secbool sdcard_powered; static secbool sdcard_powered = secfalse;
static void sdcard_exit(void) { static void sdcard_exit(void) {
int r = munmap(sdcard_buffer, SDCARD_SIZE); int r = munmap(sdcard_buffer, SDCARD_SIZE);
ensure(sectrue * (r == 0), "munmap failed"); ensure(sectrue * (r == 0), "munmap failed");
sdcard_buffer = NULL;
} }
void sdcard_init(void) { void sdcard_init(void) {
int r; if (sdcard_buffer != NULL) {
return;
}
// check whether the file exists and it has the correct size // check whether the file exists and it has the correct size
struct stat sb; struct stat sb;
r = stat(SDCARD_FILE, &sb); int r = stat(SDCARD_FILE, &sb);
// (re)create if non existant or wrong size // (re)create if non existant or wrong size
if (r != 0 || sb.st_size != SDCARD_SIZE) { if (r != 0 || sb.st_size != SDCARD_SIZE) {