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---
libmultipath/print.c | 30 ++++++++++++++++++++++++++----
1 file changed, 26 insertions(+), 4 deletions(-)
Index: multipath-tools-130222/libmultipath/print.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/print.c
+++ multipath-tools-130222/libmultipath/print.c
@@ -8,6 +8,8 @@
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
+#include <string.h>
+#include <errno.h>
#include "checkers.h"
#include "vector.h"
@@ -24,6 +26,7 @@
#include "switchgroup.h"
#include "devmapper.h"
#include "uevent.h"
+#include "debug.h"
#define MAX(x,y) (x > y) ? x : y
#define TAIL (line + len - 1 - c)
@@ -754,11 +757,30 @@ snprint_pathgroup (char * line, int len,
extern void
print_multipath_topology (struct multipath * mpp, int verbosity)
{
- char buff[MAX_LINE_LEN * MAX_LINES] = {};
+ int resize;
+ char *buff = NULL;
+ char *old = NULL;
+ int len, maxlen = MAX_LINE_LEN * MAX_LINES;
- memset(&buff[0], 0, MAX_LINE_LEN * MAX_LINES);
- snprint_multipath_topology(&buff[0], MAX_LINE_LEN * MAX_LINES,
- mpp, verbosity);
+ buff = MALLOC(maxlen);
+ do {
+ if (!buff) {
+ if (old)
+ FREE(old);
+ condlog(0, "couldn't allocate memory for list: %s\n",
+ strerror(errno));
+ return;
+ }
+
+ len = snprint_multipath_topology(buff, maxlen, mpp, verbosity);
+ resize = (len == maxlen - 1);
+
+ if (resize) {
+ maxlen *= 2;
+ old = buff;
+ buff = REALLOC(buff, maxlen);
+ }
+ } while (resize);
printf("%s", buff);
}
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