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Error conditions in utils & examples: fix leaks, unify style (see details)

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* in main():
** errx()/err()/return -> exit()
** return values -> EXIT_SUCCESS & EXIT_FAILURE

* out of main:
** err()/errx()/exit() -> return
** change retval from size_t to int to allow returning errors
** don't use EXIT_SUCCESS / EXIT_FAILURE as retvals

* add nfc_close() & nfc_exit() to exit() on errors
* add missing fclose() on errors
* add missing test if (pnd == NULL)
* unify style if (pnd == / != NULL)
* remove goto's
* few related fixes
* remove if(pnd!=NULL) test on nfc_close() calls
This commit is contained in:
Philippe Teuwen
2013-03-05 19:44:59 +01:00
parent 232930c3d5
commit bece73faaf
21 changed files with 433 additions and 298 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
examples/nfc-dep-initiator.c
View File

@@ -53,7 +53,7 @@ static nfc_device *pnd;
static void stop_dep_communication(int sig)
{
(void) sig;
if (pnd)
if (pnd != NULL)
nfc_abort_command(pnd);
else
exit(EXIT_FAILURE);
@@ -68,16 +68,17 @@ main(int argc, const char *argv[])
if (argc > 1) {
printf("Usage: %s\n", argv[0]);
return EXIT_FAILURE;
exit(EXIT_FAILURE);
}
nfc_context *context;
nfc_init(&context);
pnd = nfc_open(context, NULL);
if (!pnd) {
if (pnd == NULL) {
printf("Unable to open NFC device.\n");
return EXIT_FAILURE;
nfc_exit(context);
exit(EXIT_FAILURE);
}
printf("NFC device: %s\n opened", nfc_device_get_name(pnd));
@@ -85,12 +86,16 @@ main(int argc, const char *argv[])
if (nfc_initiator_init(pnd) < 0) {
nfc_perror(pnd, "nfc_initiator_init");
goto error;
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
}
if (nfc_initiator_select_dep_target(pnd, NDM_PASSIVE, NBR_212, NULL, &nt, 1000) < 0) {
nfc_perror(pnd, "nfc_initiator_select_dep_target");
goto error;
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
}
print_nfc_target(nt, false);
@@ -98,7 +103,9 @@ main(int argc, const char *argv[])
int res;
if ((res = nfc_initiator_transceive_bytes(pnd, abtTx, sizeof(abtTx), abtRx, sizeof(abtRx), 0)) < 0) {
nfc_perror(pnd, "nfc_initiator_transceive_bytes");
goto error;
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
}
abtRx[res] = 0;
@@ -106,11 +113,12 @@ main(int argc, const char *argv[])
if (nfc_initiator_deselect_target(pnd) < 0) {
nfc_perror(pnd, "nfc_initiator_deselect_target");
goto error;
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
}
error:
nfc_close(pnd);
nfc_exit(context);
return EXIT_SUCCESS;
exit(EXIT_SUCCESS);
}