From 6c5b0c0ac0be8cc618dfeb7bb29d113a078dcd71 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 4 Sep 2014 22:32:46 +0800 Subject: xen-hvm.c: Always return -1 when failure occurs in xen_hvm_init() When failure occurs, it need to use "return -1" instead of exit(1), so an upper layer has a chance to print failure information, too. For simplicity, in xen_hvm_init(), also use '-1' instead of all '-errno', since all related upper callers always exit(1) on failure. It is not a normal function, it does not release related resources when return -1, so need give related comments for it. It passes common check: "./configure --enable-xen && make && make check" "echo $? == 0" Signed-off-by: Chen Gang Acked-by: Stefano Stabellini Signed-off-by: Michael Tokarev --- xen-hvm.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'xen-hvm.c') diff --git a/xen-hvm.c b/xen-hvm.c index 38059f34ba..05e522cd73 100644 --- a/xen-hvm.c +++ b/xen-hvm.c @@ -979,6 +979,7 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data) xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0); } +/* return 0 means OK, or -1 means critical issue -- will exit(1) */ int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, MemoryRegion **ram_memory) { @@ -992,15 +993,13 @@ int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, state->xce_handle = xen_xc_evtchn_open(NULL, 0); if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) { perror("xen: event channel open"); - g_free(state); - return -errno; + return -1; } state->xenstore = xs_daemon_open(); if (state->xenstore == NULL) { perror("xen: xenstore open"); - g_free(state); - return -errno; + return -1; } state->exit.notify = xen_exit_notifier; @@ -1070,7 +1069,7 @@ int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, /* Initialize backend core & drivers */ if (xen_be_init() != 0) { fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__); - exit(1); + return -1; } xen_be_register("console", &xen_console_ops); xen_be_register("vkbd", &xen_kbdmouse_ops); -- cgit v1.2.3