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volatile-root: define main through macro

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-11-16 15:27:21 +01:00
parent 0420d20dd2
commit 51e2378642
1 changed files with 12 additions and 22 deletions
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34
src/volatile-root/volatile-root.c
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@ -76,7 +76,7 @@ finish_rmdir:
return r;
}
int main(int argc, char *argv[]) {
static int run(int argc, char *argv[]) {
VolatileMode m = _VOLATILE_MODE_INVALID;
const char *path;
int r;
@ -87,22 +87,18 @@ int main(int argc, char *argv[]) {
if (argc > 3) {
log_error("Too many arguments. Expected directory and mode.");
r = -EINVAL;
goto finish;
return -EINVAL;
}
r = query_volatile_mode(&m);
if (r < 0) {
log_error_errno(r, "Failed to determine volatile mode from kernel command line.");
goto finish;
}
if (r < 0)
return log_error_errno(r, "Failed to determine volatile mode from kernel command line.");
if (r == 0 && argc >= 2) {
/* The kernel command line always wins. However if nothing was set there, the argument passed here wins instead. */
m = volatile_mode_from_string(argv[1]);
if (m < 0) {
log_error("Couldn't parse volatile mode: %s", argv[1]);
r = -EINVAL;
goto finish;
}
}
@ -113,28 +109,22 @@ int main(int argc, char *argv[]) {
if (isempty(path)) {
log_error("Directory name cannot be empty.");
r = -EINVAL;
goto finish;
return -EINVAL;
}
if (!path_is_absolute(path)) {
log_error("Directory must be specified as absolute path.");
r = -EINVAL;
goto finish;
return -EINVAL;
}
if (path_equal(path, "/")) {
log_error("Directory cannot be the root directory.");
r = -EINVAL;
goto finish;
return -EINVAL;
}
}
if (m != VOLATILE_YES) {
r = 0;
goto finish;
}
if (m != VOLATILE_YES)
return 0;
r = make_volatile(path);
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
return make_volatile(path);
}
DEFINE_MAIN_FUNCTION(run);