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libdm: add DM_ABORT_ON_INTERNAL_ERRORS

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Support tests with abort when libdm encounters internal
error - i.e. for dmsetup tool.

Code execution will be aborted when
env var DM_ABORT_ON_INTERNAL_ERRORS is set to 1
This commit is contained in:
Zdenek Kabelac 2013-07-25 14:32:09 +02:00
parent 4a722c5c8b
commit 5d9628475e
4 changed files with 21 additions and 12 deletions
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1
WHATS_NEW_DM
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@ -1,5 +1,6 @@
Version 1.02.79 - Version 1.02.79 -
================================ ================================
Add DM_ABORT_ON_INTERNAL_ERRORS env var support to abort on internal errors.
Version 1.02.78 - 24th July 2013 Version 1.02.78 - 24th July 2013
================================ ================================

1
libdm/libdevmapper.h
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@ -57,6 +57,7 @@ extern "C" {
* Use dm_log_with_errno_init(NULL) to restore the default log fn. * Use dm_log_with_errno_init(NULL) to restore the default log fn.
* Error messages may have a non-zero errno. * Error messages may have a non-zero errno.
* Debug messages may have a non-zero class. * Debug messages may have a non-zero class.
* Aborts on internal error when env DM_ABORT_ON_INTERNAL_ERRORS is 1
*/ */
typedef void (*dm_log_with_errno_fn) (int level, const char *file, int line, typedef void (*dm_log_with_errno_fn) (int level, const char *file, int line,

26
libdm/libdm-common.c
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@ -114,22 +114,26 @@ static void _default_log_line(int level,
int line __attribute__((unused)), int dm_errno_or_class, int line __attribute__((unused)), int dm_errno_or_class,
const char *f, va_list ap) const char *f, va_list ap)
{ {
int use_stderr = level & _LOG_STDERR; static int _abort_on_internal_errors = -1;
FILE *out = (level & _LOG_STDERR) ? stderr : stdout;
level &= ~_LOG_STDERR; level &= ~_LOG_STDERR;
if (level > _LOG_WARN && !_verbose) if (level <= _LOG_WARN || _verbose) {
return;
if (level < _LOG_WARN) if (level < _LOG_WARN)
vfprintf(stderr, f, ap); out = stderr;
else vfprintf(out, f, ap);
vfprintf(use_stderr ? stderr : stdout, f, ap); fputc('\n', out);
}
if (level < _LOG_WARN) if (_abort_on_internal_errors < 0)
fprintf(stderr, "\n"); /* Set when env DM_ABORT_ON_INTERNAL_ERRORS is 1 */
else _abort_on_internal_errors =
fprintf(use_stderr ? stderr : stdout, "\n"); !strcmp(getenv("DM_ABORT_ON_INTERNAL_ERRORS") ? : "0", "1");
if (_abort_on_internal_errors &&
!strncmp(f, INTERNAL_ERROR, sizeof(INTERNAL_ERROR) - 1))
abort();
} }
__attribute__((format(printf, 5, 6))) __attribute__((format(printf, 5, 6)))

5
test/lib/test.sh
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@ -50,7 +50,10 @@ else
mkdir "$DM_DEV_DIR/mapper" mkdir "$DM_DEV_DIR/mapper"
fi fi
export DM_DEV_DIR LVM_SYSTEM_DIR # abort on the internal dm errors in the tests (allowing test user override)
DM_ABORT_ON_INTERNAL_ERRORS=${DM_ABORT_ON_INTERNAL_ERRORS:-1}
export DM_DEV_DIR LVM_SYSTEM_DIR DM_ABORT_ON_INTERNAL_ERRORS
cd "$TESTDIR" cd "$TESTDIR"