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Add a virGetLastErrorMessage() function

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Apps using libvirt will often have code like

   if (virXXXX() < 0) {
      virErrorPtr err = virGetLastError();
      fprintf(stderr, "Something failed: %s\n",
              err && err->message ? err->message :
              "unknown error");
      return -1;
   }

Checking for a NULL error object or message leads to very
verbose code. A virGetLastErrorMessage() helper from libvirt
can simplify this to

   if (virXXXX() < 0) {
      fprintf(stderr, "Something failed: %s\n",
              virGetLastErrorMessage());
      return -1;
   }

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange
2013-05-10 18:09:44 +01:00
parent a2214c5257
commit 69c6a58a1d
3 changed files with 28 additions and 0 deletions
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2
include/libvirt/virterror.h
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@@ -313,6 +313,8 @@ void virResetLastError (void);
void virResetError (virErrorPtr err);
void virFreeError (virErrorPtr err);
const char * virGetLastErrorMessage (void);
virErrorPtr virConnGetLastError (virConnectPtr conn);
void virConnResetLastError (virConnectPtr conn);
int virCopyLastError (virErrorPtr to);