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Attempt to detect when dumpcap dies due to an exception and report that 

appropriately.

svn path=/trunk/; revision=33411
This commit is contained in:
Guy Harris 2010-07-02 08:39:08 +00:00
parent f2e12f5fb3
commit 01b72bb5d1
1 changed files with 54 additions and 4 deletions
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58
capture_sync.c
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@ -217,7 +217,7 @@ protect_arg (const gchar *argv)
* Generate a string for a Win32 error.
*/
#define ERRBUF_SIZE 1024
static char *
static const char *
win32strerror(DWORD error)
{
static char errbuf[ERRBUF_SIZE+1];
@ -240,6 +240,53 @@ win32strerror(DWORD error)
g_snprintf(p, (gulong)(sizeof errbuf - (p-errbuf)), " (%lu)", error);
return errbuf;
}
/*
* Generate a string for a Win32 exception code.
*/
static const char *
win32strexception(DWORD exception)
{
static char errbuf[ERRBUF_SIZE+1];
static const struct exception_msg {
int code;
char *msg;
} exceptions[] = {
{ EXCEPTION_ACCESS_VIOLATION, "Access violation" },
{ EXCEPTION_ARRAY_BOUNDS_EXCEEDED, "Array bounds exceeded" },
{ EXCEPTION_BREAKPOINT, "Breakpoint" },
{ EXCEPTION_DATATYPE_MISALIGNMENT, "Data type misalignment" },
{ EXCEPTION_FLT_DENORMAL_OPERAND, "Denormal floating-point operand" },
{ EXCEPTION_FLT_DIVIDE_BY_ZERO, "Floating-point divide by zero" },
{ EXCEPTION_FLT_INEXACT_RESULT, "Floating-point inexact result" },
{ EXCEPTION_FLT_INVALID_OPERATION, "Invalid floating-point operation" },
{ EXCEPTION_FLT_OVERFLOW, "Floating-point overflow" },
{ EXCEPTION_FLT_STACK_CHECK, "Floating-point stack check" },
{ EXCEPTION_FLT_UNDERFLOW, "Floating-point underflow" },
{ EXCEPTION_GUARD_PAGE, "Guard page violation" },
{ EXCEPTION_ILLEGAL_INSTRUCTION, "Illegal instruction" },
{ EXCEPTION_IN_PAGE_ERROR, "Page-in error" },
{ EXCEPTION_INT_DIVIDE_BY_ZERO, "Integer divide by zero" },
{ EXCEPTION_INT_OVERFLOW, "Integer overflow" },
{ EXCEPTION_INVALID_DISPOSITION, "Invalid disposition" },
{ EXCEPTION_INVALID_HANDLE, "Invalid handle" },
{ EXCEPTION_NONCONTINUABLE_EXCEPTION, "Non-continuable exception" },
{ EXCEPTION_PRIV_INSTRUCTION, "Privileged instruction" },
{ EXCEPTION_SINGLE_STEP, "Single-step complete" },
{ EXCEPTION_STACK_OVERFLOW, "Stack overflow" },
{ STATUS_UNWIND_CONSOLIDATE, "Frame consolidation executed" },
{ 0, NULL }
};
#define N_EXCEPTIONS (sizeof exceptions / sizeof exceptions[0])
int i;
for (i = 0; i < N_EXCEPTIONS; i++) {
if (exceptions[i].code == exception)
return exceptions[i].msg;
}
g_snprintf(errbuf, (gulong)sizeof errbuf, "Exception 0x%08x", exception);
return errbuf;
}
#endif
/* Initialize an argument list and add dumpcap to it. */
@ -1594,11 +1641,14 @@ sync_pipe_wait_for_child(int fork_child, gchar **msgp)
/*
* The child exited; return its exit status. Do not treat this as
* an error.
*
* XXX - can we distinguish "exited with an exit status XXX" from
* "terminated with an uncaught exception YYY"?
*/
ret = fork_child_status;
if ((fork_child_status & 0xC0000000) == ERROR_SEVERITY_ERROR) {
/* Probably an exception code */
*msgp = g_strdup_printf("Child dumpcap process died: %s",
win32strexception(fork_child_status));
ret = -1;
}
}
#else
if (waitpid(fork_child, &fork_child_status, 0) != -1) {