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log: Fix qemu_set_dfilter_ranges() error reporting

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g_error() is not an acceptable way to report errors to the user:

    $ qemu-system-x86_64 -dfilter 1000+0

    ** (process:17187): ERROR **: Failed to parse range in: 1000+0
    Trace/breakpoint trap (core dumped)

g_assert() isn't, either:

    $ qemu-system-x86_64 -dfilter 1000x+64
    **
    ERROR:/work/armbru/qemu/util/log.c:180:qemu_set_dfilter_ranges: assertion failed: (e == range_op)
    Aborted (core dumped)

Convert qemu_set_dfilter_ranges() to Error.  Rework its deeply nested
control flow.  Touch up the error messages.  Call it with
&error_fatal.

This also permits testing without a subprocess, so do that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1466011636-6112-3-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster 2016-06-15 19:27:15 +02:00
parent 2ec62faea2
commit bd6fee9f12
4 changed files with 77 additions and 93 deletions
Download patch file Download diff file Expand all files Collapse all files

49
tests/test-logging.c
View file

@ -27,11 +27,14 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "include/qemu/log.h"
#include "qapi/error.h"
#include "qemu/log.h"
static void test_parse_range(void)
{
qemu_set_dfilter_ranges("0x1000+0x100");
Error *err = NULL;
qemu_set_dfilter_ranges("0x1000+0x100", &error_abort);
g_assert_false(qemu_log_in_addr_range(0xfff));
g_assert(qemu_log_in_addr_range(0x1000));
@ -39,56 +42,40 @@ static void test_parse_range(void)
g_assert(qemu_log_in_addr_range(0x10ff));
g_assert_false(qemu_log_in_addr_range(0x1100));
qemu_set_dfilter_ranges("0x1000-0x100");
qemu_set_dfilter_ranges("0x1000-0x100", &error_abort);
g_assert_false(qemu_log_in_addr_range(0x1001));
g_assert(qemu_log_in_addr_range(0x1000));
g_assert(qemu_log_in_addr_range(0x0f01));
g_assert_false(qemu_log_in_addr_range(0x0f00));
qemu_set_dfilter_ranges("0x1000..0x1100");
qemu_set_dfilter_ranges("0x1000..0x1100", &error_abort);
g_assert_false(qemu_log_in_addr_range(0xfff));
g_assert(qemu_log_in_addr_range(0x1000));
g_assert(qemu_log_in_addr_range(0x1100));
g_assert_false(qemu_log_in_addr_range(0x1101));
qemu_set_dfilter_ranges("0x1000..0x1000");
qemu_set_dfilter_ranges("0x1000..0x1000", &error_abort);
g_assert_false(qemu_log_in_addr_range(0xfff));
g_assert(qemu_log_in_addr_range(0x1000));
g_assert_false(qemu_log_in_addr_range(0x1001));
qemu_set_dfilter_ranges("0x1000+0x100,0x2100-0x100,0x3000..0x3100");
qemu_set_dfilter_ranges("0x1000+0x100,0x2100-0x100,0x3000..0x3100",
&error_abort);
g_assert(qemu_log_in_addr_range(0x1050));
g_assert(qemu_log_in_addr_range(0x2050));
g_assert(qemu_log_in_addr_range(0x3050));
qemu_set_dfilter_ranges("0x1000+onehundred", &err);
error_free_or_abort(&err);
qemu_set_dfilter_ranges("0x1000+0", &err);
error_free_or_abort(&err);
}
#ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
static void test_parse_invalid_range_subprocess(void)
{
qemu_set_dfilter_ranges("0x1000+onehundred");
}
static void test_parse_invalid_range(void)
{
g_test_trap_subprocess("/logging/parse_invalid_range/subprocess", 0, 0);
g_test_trap_assert_failed();
g_test_trap_assert_stdout("");
g_test_trap_assert_stderr("*Failed to parse range in: 0x1000+onehundred\n");
}
static void test_parse_zero_range_subprocess(void)
{
qemu_set_dfilter_ranges("0x1000+0");
}
static void test_parse_zero_range(void)
{
g_test_trap_subprocess("/logging/parse_zero_range/subprocess", 0, 0);
g_test_trap_assert_failed();
g_test_trap_assert_stdout("");
g_test_trap_assert_stderr("*Failed to parse range in: 0x1000+0\n");
}
/* As the only real failure from a bad log filename path spec is
* reporting to the user we have to use the g_test_trap_subprocess
* mechanism and check no errors reported on stderr.
@ -126,10 +113,6 @@ int main(int argc, char **argv)
g_test_add_func("/logging/parse_range", test_parse_range);
#ifdef CONFIG_HAS_GLIB_SUBPROCESS_TESTS
g_test_add_func("/logging/parse_invalid_range/subprocess", test_parse_invalid_range_subprocess);
g_test_add_func("/logging/parse_invalid_range", test_parse_invalid_range);
g_test_add_func("/logging/parse_zero_range/subprocess", test_parse_zero_range_subprocess);
g_test_add_func("/logging/parse_zero_range", test_parse_zero_range);
g_test_add_func("/logging/parse_path", test_parse_path);
g_test_add_func("/logging/parse_path/subprocess", test_parse_path_subprocess);
g_test_add_func("/logging/parse_invalid_path", test_parse_invalid_path);