kconfig: Add error handling to KCONFIG_ALLCONFIG
- Only try to read the file specified if KCONFIG_ALL_CONFIG is set to
something other than the empty string or "1".
- Don't use stat to check the name passed to conf_read_simple so that
zconf_fopen can find the file in the current directory or in SRCTREE
removing a extremely source of confusing failure, where KCONFIG_ALL_CONFIG
was not interpreted with respect to the directory make was called in.
- If conf_read_simple fails complain clearly and stop processing.
Allowing the simple debugging of typos.
- Clearly document the behavior so it is clear to users which
values are treated as flags and which values are treated as
filenames.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index f208f90..0fdda91 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -574,8 +574,13 @@
case alldefconfig:
case randconfig:
name = getenv("KCONFIG_ALLCONFIG");
- if (name && !stat(name, &tmpstat)) {
- conf_read_simple(name, S_DEF_USER);
+ if (name && (strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
+ if (conf_read_simple(name, S_DEF_USER)) {
+ fprintf(stderr,
+ _("*** Can't read seed configuration \"%s\"!\n"),
+ name);
+ exit(1);
+ }
break;
}
switch (input_mode) {
@@ -586,10 +591,13 @@
case randconfig: name = "allrandom.config"; break;
default: break;
}
- if (!stat(name, &tmpstat))
- conf_read_simple(name, S_DEF_USER);
- else if (!stat("all.config", &tmpstat))
- conf_read_simple("all.config", S_DEF_USER);
+ if (conf_read_simple(name, S_DEF_USER) &&
+ conf_read_simple("all.config", S_DEF_USER)) {
+ fprintf(stderr,
+ _("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
+ name);
+ exit(1);
+ }
break;
default:
break;