[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

[libvirt] [PATCH v1 1/7] pidfile: Make checking binary path in virPidFileRead optional



This patch changes behavior of virPidFileRead to enable passing NULL as
path to the binary the pid file should be checked against to skip this
check. This enables using this function for reading files that have same
semantics as pid files, but belong to unknown processess.
---
This patch is new in the series.

 src/util/virpidfile.c |   21 +++++++++++++--------
 1 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/util/virpidfile.c b/src/util/virpidfile.c
index 1fd6318..f1f721f 100644
--- a/src/util/virpidfile.c
+++ b/src/util/virpidfile.c
@@ -184,6 +184,9 @@ int virPidFileRead(const char *dir,
  * resolves to @binpath. This adds protection against
  * recycling of previously reaped pids.
  *
+ * If @binpath is NULL the check for the executable path
+ * is skipped.
+ *
  * Returns -errno upon error, or zero on successful
  * reading of the pidfile. If the PID was not still
  * alive, zero will be returned, but @pid will be
@@ -209,16 +212,18 @@ int virPidFileReadPathIfAlive(const char *path,
     }
 #endif

-    if (virAsprintf(&procpath, "/proc/%d/exe", *pid) < 0) {
-        *pid = -1;
-        return -1;
-    }
+    if (binpath) {
+        if (virAsprintf(&procpath, "/proc/%d/exe", *pid) < 0) {
+            *pid = -1;
+            return -1;
+        }

-    if (virFileIsLink(procpath) &&
-        virFileLinkPointsTo(procpath, binpath) == 0)
-        *pid = -1;
+        if (virFileIsLink(procpath) &&
+            virFileLinkPointsTo(procpath, binpath) == 0)
+            *pid = -1;

-    VIR_FREE(procpath);
+        VIR_FREE(procpath);
+    }

     return 0;
 }
-- 
1.7.3.4


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]