[PATCH 8/9] xl: make error reporting of cpupool subcommands consistent

[Dario Faggioli <dario.faggioli@citrix.com>]

with the rest of the file, where we return 1 on 0, rather
than using libxl error codes.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Juergen Gross <JGross@suse.com>
---
 tools/libxl/xl_cmdimpl.c |   69 ++++++++++++++++++++++++----------------------
 1 file changed, 36 insertions(+), 33 deletions(-)

diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index e6d1234..14b5a3d 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -7034,7 +7034,7 @@ int main_cpupoolcreate(int argc, char **argv)
     libxl_bitmap cpumap;
     libxl_uuid uuid;
     libxl_cputopology *topology;
-    int rc = -ERROR_FAIL;
+    int rc = 1;
 
     SWITCH_FOREACH_OPT(opt, "hnf:", opts, "cpupool-create", 0) {
     case 'f':
@@ -7228,7 +7228,6 @@ int main_cpupoollist(int argc, char **argv)
     int n_pools, p, c, n;
     uint32_t poolid;
     char *name;
-    int ret = 0;
 
     SWITCH_FOREACH_OPT(opt, "hc", opts, "cpupool-list", 0) {
     case 'c':
@@ -7240,14 +7239,14 @@ int main_cpupoollist(int argc, char **argv)
         pool = argv[optind];
         if (libxl_name_to_cpupoolid(ctx, pool, &poolid)) {
             fprintf(stderr, "Pool \'%s\' does not exist\n", pool);
-            return -ERROR_FAIL;
+            return 1;
         }
     }
 
     poolinfo = libxl_list_cpupool(ctx, &n_pools);
     if (!poolinfo) {
         fprintf(stderr, "error getting cpupool info\n");
-        return -ERROR_NOMEM;
+        return 1;
     }
 
     printf("%-19s", "Name");
@@ -7257,7 +7256,7 @@ int main_cpupoollist(int argc, char **argv)
         printf("CPUs   Sched     Active   Domain count\n");
 
     for (p = 0; p < n_pools; p++) {
-        if (!ret && (!pool || (poolinfo[p].poolid == poolid))) {
+        if (!pool || (poolinfo[p].poolid == poolid)) {
             name = poolinfo[p].pool_name;
             printf("%-19s", name);
             n = 0;
@@ -7278,7 +7277,7 @@ int main_cpupoollist(int argc, char **argv)
 
     libxl_cpupoolinfo_list_free(poolinfo, n_pools);
 
-    return ret;
+    return 0;
 }
 
 int main_cpupooldestroy(int argc, char **argv)
@@ -7295,11 +7294,14 @@ int main_cpupooldestroy(int argc, char **argv)
 
     if (libxl_cpupool_qualifier_to_cpupoolid(ctx, pool, &poolid, NULL) ||
         !libxl_cpupoolid_is_valid(ctx, poolid)) {
-        fprintf(stderr, "unknown cpupool \'%s\'\n", pool);
-        return -ERROR_FAIL;
+        fprintf(stderr, "unknown cpupool '%s'\n", pool);
+        return 1;
     }
 
-    return -libxl_cpupool_destroy(ctx, poolid);
+    if (libxl_cpupool_destroy(ctx, poolid))
+        return 1;
+
+    return 0;
 }
 
 int main_cpupoolrename(int argc, char **argv)
@@ -7317,14 +7319,14 @@ int main_cpupoolrename(int argc, char **argv)
 
     if (libxl_cpupool_qualifier_to_cpupoolid(ctx, pool, &poolid, NULL) ||
         !libxl_cpupoolid_is_valid(ctx, poolid)) {
-        fprintf(stderr, "unknown cpupool \'%s\'\n", pool);
-        return -ERROR_FAIL;
+        fprintf(stderr, "unknown cpupool '%s'\n", pool);
+        return 1;
     }
 
     new_name = argv[optind];
 
     if (libxl_cpupool_rename(ctx, new_name, poolid)) {
-        fprintf(stderr, "Can't rename cpupool '%s'.\n", pool);
+        fprintf(stderr, "Can't rename cpupool '%s'\n", pool);
         return 1;
     }
 
@@ -7426,22 +7428,25 @@ int main_cpupoolmigrate(int argc, char **argv)
 
     if (libxl_domain_qualifier_to_domid(ctx, dom, &domid) ||
         !libxl_domid_to_name(ctx, domid)) {
-        fprintf(stderr, "unknown domain \'%s\'\n", dom);
-        return -ERROR_FAIL;
+        fprintf(stderr, "unknown domain '%s'\n", dom);
+        return 1;
     }
 
     if (libxl_cpupool_qualifier_to_cpupoolid(ctx, pool, &poolid, NULL) ||
         !libxl_cpupoolid_is_valid(ctx, poolid)) {
-        fprintf(stderr, "unknown cpupool \'%s\'\n", pool);
-        return -ERROR_FAIL;
+        fprintf(stderr, "unknown cpupool '%s'\n", pool);
+        return 1;
     }
 
-    return -libxl_cpupool_movedomain(ctx, poolid, domid);
+    if (libxl_cpupool_movedomain(ctx, poolid, domid))
+        return 1;
+
+    return 0;
 }
 
 int main_cpupoolnumasplit(int argc, char **argv)
 {
-    int ret;
+    int rc;
     int opt;
     int p;
     int c;
@@ -7462,13 +7467,13 @@ int main_cpupoolnumasplit(int argc, char **argv)
         /* No options */
     }
 
-    ret = 0;
+    rc = 1;
 
     libxl_bitmap_init(&cpumap);
     poolinfo = libxl_list_cpupool(ctx, &n_pools);
     if (!poolinfo) {
         fprintf(stderr, "error getting cpupool info\n");
-        return -ERROR_NOMEM;
+        return 1;
     }
     poolid = poolinfo[0].poolid;
     sched = poolinfo[0].sched;
@@ -7477,19 +7482,19 @@ int main_cpupoolnumasplit(int argc, char **argv)
     }
     if (n_pools > 1) {
         fprintf(stderr, "splitting not possible, already cpupools in use\n");
-        return -ERROR_FAIL;
+        return 1;
     }
 
     topology = libxl_get_cpu_topology(ctx, &n_cpus);
     if (topology == NULL) {
         fprintf(stderr, "libxl_get_topologyinfo failed\n");
-        return -ERROR_FAIL;
+        return 1;
     }
 
     if (libxl_cpu_bitmap_alloc(ctx, &cpumap, 0)) {
         fprintf(stderr, "Failed to allocate cpumap\n");
         libxl_cputopology_list_free(topology, n_cpus);
-        return -ERROR_FAIL;
+        return 1;
     }
 
     /* Reset Pool-0 to 1st node: first add cpus, then remove cpus to avoid
@@ -7498,12 +7503,11 @@ int main_cpupoolnumasplit(int argc, char **argv)
     node = topology[0].node;
     if (libxl_cpupool_cpuadd_node(ctx, 0, node, &n)) {
         fprintf(stderr, "error on adding cpu to Pool 0\n");
-        return -ERROR_FAIL;
+        return 1;
     }
 
     snprintf(name, 15, "Pool-node%d", node);
-    ret = -libxl_cpupool_rename(ctx, name, 0);
-    if (ret) {
+    if (libxl_cpupool_rename(ctx, name, 0)) {
         fprintf(stderr, "error on renaming Pool 0\n");
         goto out;
     }
@@ -7542,8 +7546,7 @@ int main_cpupoolnumasplit(int argc, char **argv)
         }
 
         node = topology[c].node;
-        ret = -libxl_cpupool_cpuremove_node(ctx, 0, node, &n);
-        if (ret) {
+        if (libxl_cpupool_cpuremove_node(ctx, 0, node, &n)) {
             fprintf(stderr, "error on removing cpu from Pool 0\n");
             goto out;
         }
@@ -7551,14 +7554,12 @@ int main_cpupoolnumasplit(int argc, char **argv)
         snprintf(name, 15, "Pool-node%d", node);
         libxl_uuid_generate(&uuid);
         poolid = 0;
-        ret = -libxl_cpupool_create(ctx, name, sched, cpumap, &uuid, &poolid);
-        if (ret) {
+        if (libxl_cpupool_create(ctx, name, sched, cpumap, &uuid, &poolid)) {
             fprintf(stderr, "error on creating cpupool\n");
             goto out;
         }
 
-        ret = -libxl_cpupool_cpuadd_node(ctx, poolid, node, &n);
-        if (ret) {
+        if (libxl_cpupool_cpuadd_node(ctx, poolid, node, &n)) {
             fprintf(stderr, "error on adding cpus to cpupool\n");
             goto out;
         }
@@ -7570,11 +7571,13 @@ int main_cpupoolnumasplit(int argc, char **argv)
         }
     }
 
+    rc = 0;
+
 out:
     libxl_cputopology_list_free(topology, n_cpus);
     libxl_bitmap_dispose(&cpumap);
 
-    return ret;
+    return rc;
 }
 
 int main_getenforce(int argc, char **argv)