[libvirt] [PATCH v2 24/35] util: netdevtap: use VIR_AUTOFREE instead of VIR_FREE for scalar types

By making use of GNU C's cleanup attribute handled by the VIR_AUTOFREE macro for declaring scalar variables, majority of the VIR_FREE calls can be dropped, which in turn leads to getting rid of most of our cleanup sections. Signed-off-by: Sukrit Bhatnagar <skrtbhtngr(a)gmail.com&gt; Reviewed-by: Erik Skultety <eskultet(a)redhat.com&gt; --- src/util/virnetdevtap.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c index d432577..c2c2e73 100644 --- a/src/util/virnetdevtap.c +++ b/src/util/virnetdevtap.c @@ -400,16 +400,14 @@ int virNetDevTapCreate(char **ifname, if (strstr(*ifname, "%d") != NULL) { size_t i; for (i = 0; i <= IF_MAXUNIT; i++) { - char *newname; + VIR_AUTOFREE(char *) newname = NULL; if (virAsprintf(&newname, *ifname, i) < 0) goto cleanup; if (virNetDevExists(newname) == 0) { - newifname = newname; + VIR_STEAL_PTR(newifname, newname); break; } - - VIR_FREE(newname); } if (newifname) { VIR_FREE(*ifname); @@ -423,7 +421,7 @@ int virNetDevTapCreate(char **ifname, } if (tapfd) { - char *dev_path = NULL; + VIR_AUTOFREE(char *) dev_path = NULL; if (virAsprintf(&dev_path, "/dev/%s", ifr.ifr_name) < 0) goto cleanup; @@ -431,11 +429,8 @@ int virNetDevTapCreate(char **ifname, virReportSystemError(errno, _("Unable to open %s"), dev_path); - VIR_FREE(dev_path); goto cleanup; } - - VIR_FREE(dev_path); } if (virNetDevSetName(ifr.ifr_name, *ifname) == -1) -- 1.8.3.1