[libvirt] [PATCH] Look in /usr/libexec for the qemu-kvm binary.
On RHEL-5 the qemu-kvm binary is located in /usr/libexec.
To reduce confusion for people trying to run upstream libvirt
on RHEL-5 machines, make the qemu driver look in /usr/libexec
for the qemu-kvm binary.
To make this work, I modified virFindFileInPath to handle an
absolute path correctly. I also ran into an issue where
NULL was sometimes being passed for the file parameter
to virFindFileInPath; it didn't crash prior to this patch
since it was building paths like /usr/bin/(null). This
is non-standard behavior, though, so I added a NULL
check at the beginning.
Signed-off-by: Chris Lalancette <clalance(a)redhat.com>
---
src/qemu/qemu_conf.c | 3 ++-
src/util/util.c | 13 +++++++++++++
2 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index f4a6c08..d5e38c2 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -804,7 +804,8 @@ qemudCapsInitGuest(virCapsPtr caps,
if (STREQ(info->arch, hostmachine) ||
(STREQ(hostmachine, "x86_64") && STREQ(info->arch,
"i686"))) {
if (access("/dev/kvm", F_OK) == 0) {
- const char *const kvmbins[] = { "qemu-kvm", /* Fedora */
+ const char *const kvmbins[] = { "/usr/libexec/qemu-kvm", /* RHEL
*/
+ "qemu-kvm", /* Fedora */
"kvm" }; /* Upstream .spec */
for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) {
diff --git a/src/util/util.c b/src/util/util.c
index 0ce5026..394ef35 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -1114,6 +1114,19 @@ char *virFindFileInPath(const char *file)
char *pathseg;
char fullpath[PATH_MAX];
+ if (file == NULL)
+ return NULL;
+
+ /* if we are passed an absolute path (starting with /), return a
+ * copy of that path
+ */
+ if (file[0] == '/') {
+ if (virFileExists(file))
+ return strdup(file);
+ else
+ return NULL;
+ }
+
/* copy PATH env so we can tweak it */
if (virStrcpyStatic(pathenv, getenv("PATH")) == NULL)
return NULL;
--
1.6.6