[libvirt] [PATCH] virsh: fix regression in log to file

[Supriya Kannery]

Commit 36deff04 introduced a regression due to which virsh is not able
to log to a file - msg_buf was changed from an array to a pointer
without corresponding change to usage of "sizeof()".

Fix regression in virsh logging

Signed-off-by: Supriya Kannery <supriyak at in.ibm.com>
---
  tools/virsh.c |   10 +++++-----
  1 file changed, 5 insertions(+), 5 deletions(-)

Index: libvirt/tools/virsh.c
===================================================================
--- libvirt.orig/tools/virsh.c
+++ libvirt/tools/virsh.c
@@ -12257,7 +12257,7 @@ vshOutputLogFile(vshControl *ctl, int lo
      */
      gettimeofday(&stTimeval, NULL);
      stTm = localtime(&stTimeval.tv_sec);
-    snprintf(msg_buf, sizeof(msg_buf),
+    snprintf(msg_buf, MSG_BUFFER,
               "[%d.%02d.%02d %02d:%02d:%02d ",
               (1900 + stTm->tm_year),
               (1 + stTm->tm_mon),
@@ -12265,7 +12265,7 @@ vshOutputLogFile(vshControl *ctl, int lo
               (stTm->tm_hour),
               (stTm->tm_min),
               (stTm->tm_sec));
-    snprintf(msg_buf + strlen(msg_buf), sizeof(msg_buf) - strlen(msg_buf),
+    snprintf(msg_buf + strlen(msg_buf), MSG_BUFFER - strlen(msg_buf),
               "%s] ", SIGN_NAME);
      switch (log_level) {
          case VSH_ERR_DEBUG:
@@ -12287,13 +12287,13 @@ vshOutputLogFile(vshControl *ctl, int lo
              lvl = LVL_DEBUG;
              break;
      }
-    snprintf(msg_buf + strlen(msg_buf), sizeof(msg_buf) - strlen(msg_buf),
+    snprintf(msg_buf + strlen(msg_buf), MSG_BUFFER - strlen(msg_buf),
               "%s ", lvl);
-    vsnprintf(msg_buf + strlen(msg_buf), sizeof(msg_buf) - strlen(msg_buf),
+    vsnprintf(msg_buf + strlen(msg_buf), MSG_BUFFER - strlen(msg_buf),
                msg_format, ap);

      if (msg_buf[strlen(msg_buf) - 1] != '\n')
-        snprintf(msg_buf + strlen(msg_buf), sizeof(msg_buf) - 
strlen(msg_buf), "\n");
+        snprintf(msg_buf + strlen(msg_buf), MSG_BUFFER - 
strlen(msg_buf), "\n");

      /* write log */
      if (safewrite(ctl->log_fd, msg_buf, strlen(msg_buf)) < 0) {