main/libvirt: fix available memory reporting

fixes #1401

1 files changed, 33 insertions, 0 deletions

diff --git a/main/libvirt/uclibc-physmem.patch b/main/libvirt/uclibc-physmem.patch
new file mode 100644
index 0000000000..73de5ac4ec
--- /dev/null
+++ b/main/libvirt/uclibc-physmem.patch
@@ -0,0 +1,33 @@
+--- ./gnulib/lib/physmem.c.orig
++++ ./gnulib/lib/physmem.c
+@@ -23,6 +23,7 @@
+ #include "physmem.h"
+ 
+ #include <unistd.h>
++#include <stdio.h>
+ 
+ #if HAVE_SYS_PSTAT_H
+ # include <sys/pstat.h>
+@@ -81,6 +82,22 @@
+ double
+ physmem_total (void)
+ {
++#if defined(__UCLIBC__)
++        char line[128];
++        FILE *f = fopen("/proc/meminfo", "r");
++        long double result = -1;
++        if (f == NULL)
++                return 0;
++        while (!feof(f) && fgets(line, sizeof(line)-1, f)) {
++                if (sscanf(line, "MemTotal: %Lf kB", &result) == 1) {
++                        result *= 1024;
++                        break;
++                }
++        }
++        fclose(f);
++        return result;
++#endif
++
+ #if defined _SC_PHYS_PAGES && defined _SC_PAGESIZE
+   { /* This works on linux-gnu, solaris2 and cygwin.  */
+     double pages = sysconf (_SC_PHYS_PAGES);