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2012-10-23error: add error_set_errno and error_setg_errnoPaolo Bonzini1-0/+9
These functions help maintaining homogeneous formatting of error messages that include strerror values. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-09-05error: add error_setg()Luiz Capitulino1-0/+6
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2012-08-13error, qerror: pass desc string to error callsLuiz Capitulino1-5/+5
This commit changes all QERR_ macros to contain a human message (ie. the desc string found in qerr_table[]) instead of a json dictionary in string format. Before this commit, error_set() and qerror_report() would receive a json dictionary in string format and build a qobject from it. Now, both function receive a human message instead and the qobject is not built anymore. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-08-13error: drop unused functionsLuiz Capitulino1-16/+0
Besides being unused, they operate on the current error format, which is going to be replaced soon. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-08-13error: add error_get_class()Luiz Capitulino1-0/+5
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-08-13error, qerror: add ErrorClass argument to error functionsLuiz Capitulino1-2/+3
The new argument is added to functions qerror_report() and error_set(). It's stored in Error and QError. qerror_report_err() is also updated to take care of it. The QERR_ macros are changed to contain a place holder value for the new argument, so that the value is used on all current calls to qerror_report() and error_set() (and also to initialize qerror_table[]). Next commit will update the QERR_ macros with a proper ErrorClass value. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2012-07-23qapi: fix error propagationPaolo Bonzini1-1/+1
Don't overwrite / leak previously set errors. Make traversal cope with missing mandatory sub-structs. Don't try to end a container that could not be started. v1->v2: - unchanged v2->v3: - instead of examining, assert that we never overwrite errors with error_set() - allow visitors to set a NULL struct pointer successfully, so traversal of incomplete objects can continue - check for a NULL "obj" before accessing "(*obj)->has_XXX" (this is not a typo, "obj != NULL" implies "*obj != NULL" here) - fix start_struct / end_struct balance for unions as well Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2012-03-15Error: Introduce error_copy()Luiz Capitulino1-0/+5
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-07-21Error: Fix build when qemu-common.h is not includedLuiz Capitulino1-0/+1
Commit e4ea5e2d0e0e4c5188ab45b66f3195062ae059dc added the use of the macro GCC_FMT_ATTR to error.h, however compiler.h is not included by error.h This will cause a build error when files including error.h don't include qemu-common.h (or compiler.h). Not an issue today because the only file including it is json-parser.h and it does include qemu-common.h, but let's get it fixed. Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
2011-06-16error framework: Fix compilation for w32/w64Stefan Weil1-2/+1
The declaration of function error_set() should use macro GCC_FMT_ATTR instead of gcc's format printf attribute. For w32/w64, both declarations are different and GCC_FMT_ATTR is needed. Compilation for w64 even failed with the original code because mingw64 defines a macro for printf. GCC_FMT_ATTR requires qemu-common.h, so add it in error.c (it's also included by error_int.h but too late). Remove assert.h which is included by qemu-common.h. Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-06-07Introduce the new error frameworkLuiz Capitulino1-0/+70
New error-handling framework that allows for exception-like error propagation. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>