From 9f0c829d98a76702c7b69b9dc34aaed2d281ce4e Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Tue, 4 Dec 2007 10:13:04 +0000 Subject: [PATCH] domain builder: make mmap() failure message more verbose. Signed-off-by: Christoph Egger --- tools/libxc/xc_dom_core.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/libxc/xc_dom_core.c b/tools/libxc/xc_dom_core.c index 0375e41208..9a158ef5e2 100644 --- a/tools/libxc/xc_dom_core.c +++ b/tools/libxc/xc_dom_core.c @@ -352,15 +352,19 @@ void *xc_dom_pfn_to_ptr(struct xc_dom_image *dom, xen_pfn_t pfn, } else { + int err; + mode = "anonymous memory"; phys->ptr = mmap(NULL, phys->count << page_shift, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); if ( phys->ptr == MAP_FAILED ) { + err = errno; xc_dom_panic(XC_OUT_OF_MEMORY, - "%s: oom: can't allocate 0x%" PRIpfn " pages\n", - __FUNCTION__, count); + "%s: oom: can't allocate 0x%" PRIpfn " pages" + " [mmap, errno=%i (%s)]\n", + __FUNCTION__, count, err, strerror(err)); return NULL; } dom->alloc_mem_map += phys->count << page_shift; -- 2.30.2