pass old pattern to ccpp hook and use it

abrtd:
instead of
"|/usr/libexec/abrt-ccpp-hook DEBUG_DUMPS_DIR %p %s %u %c",
sets coredump handler to
"|/usr/libexec/abrt-ccpp-hook DEBUG_DUMPS_DIR %s %c %p %u %g %t %h %e OLD_PATTERN"

abrt-ccpp-hook:
expands OLD_PATTERN using values of %s %c %p %u %g %t %h %e
and uses it as a name of "compat coredump".

Patch has a feature which prevents usage of kernel-truncated
OLD_PATTERN: it is passed as hex string *with terminating NUL*
(encoded as 00). If ccpp hook doesn't see 00, it refuses to use
OLD_PATTERN and uses string "core" instead.

Run tested. On a new kernel, passes up to 27 char long old pattern.
Longer patterns are still truncated.
This may be improved in future kernels.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/inc/abrtlib.h b/inc/abrtlib.h
index fdf22643..0c36f268 100644
--- a/inc/abrtlib.h
+++ b/inc/abrtlib.h
@@ -218,6 +218,17 @@ char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
 
 /* Random utility functions */
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+/* Emit a string of hex representation of bytes */
+char* bin2hex(char *dst, const char *str, int count);
+/* Convert "xxxxxxxx" hex string to binary, no more than COUNT bytes */
+char* hex2bin(char *dst, const char *str, int count);
+#ifdef __cplusplus
+}
+#endif
+
 /* Returns command line of running program.
  * Caller is responsible to free() the returned value.
  * If the pid is not valid or command line can not be obtained,