In containers/VM's/initrd one might not have installed any modules and
accompanying modules.devname
Don't fail if this is the case, just warn.
When used in systemd this means we don't get a failing unit on booting
containers.
---
v2: simplify based on feedback from Dave
tools/static-nodes.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/tools/static-nodes.c b/tools/static-nodes.c
index 96bb71e..351c02b 100644
--- a/tools/static-nodes.c
+++ b/tools/static-nodes.c
@@ -155,7 +155,8 @@ static int do_static_nodes(int argc, char *argv[])
{
struct utsname kernel;
char modules[PATH_MAX];
- FILE *in = NULL, *out = stdout;
+ const char *output = "/dev/stdout";
+ FILE *in = NULL, *out = NULL;
const struct static_nodes_format *format = &static_nodes_format_human;
char buf[4096];
int ret = EXIT_SUCCESS;
@@ -170,13 +171,7 @@ static int do_static_nodes(int argc, char *argv[])
}
switch (c) {
case 'o':
- out = fopen(optarg, "we");
- if (out == NULL) {
- fprintf(stderr, "Error: could not create %s!\n",
- optarg);
- ret = EXIT_FAILURE;
- goto finish;
- }
+ output = optarg;
break;
case 'f':
valid = 0;
@@ -217,12 +212,24 @@ static int do_static_nodes(int argc, char *argv[])
goto finish;
}
- snprintf(modules, sizeof(modules), "/lib/modules/%s/modules.devname",
- kernel.release);
+ snprintf(modules, sizeof(modules), "/lib/modules/%s/modules.devname",
kernel.release);
in = fopen(modules, "re");
if (in == NULL) {
- fprintf(stderr, "Error: could not open
/lib/modules/%s/modules.devname - %m\n",
- kernel.release);
+ if (errno == ENOENT) {
+ fprintf(stderr, "Warning:
/lib/modules/%s/modules.devname not found - ignoring\n",
+ kernel.release);
+ ret = EXIT_SUCCESS;
+ } else {
+ fprintf(stderr, "Error: could not open
/lib/modules/%s/modules.devname - %m\n",
+ kernel.release);
+ ret = EXIT_FAILURE;
+ }
+ goto finish;
+ }
+
+ out = fopen(output, "we");
+ if (out == NULL) {
+ fprintf(stderr, "Error: could not create %s - %m\n", output);
ret = EXIT_FAILURE;
goto finish;
}
--
1.8.3.2
--
To unsubscribe from this list: send the line "unsubscribe linux-modules" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
