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authorLennart Poettering <lennart@poettering.net>2013-10-30 20:19:22 +0100
committerLennart Poettering <lennart@poettering.net>2013-10-31 01:43:38 +0100
commitf85fc8454137a5cfba99b3a24aaa6dc38f6e2768 (patch)
treeac1d4937a737c803891bd254051bd84bf72c2e3f /src/getty-generator/getty-generator.c
parent4ba93280223ceb5de1bcedb196c38252f334521a (diff)
getty-generator: modernizations
Diffstat (limited to 'src/getty-generator/getty-generator.c')
-rw-r--r--src/getty-generator/getty-generator.c86
1 files changed, 28 insertions, 58 deletions
diff --git a/src/getty-generator/getty-generator.c b/src/getty-generator/getty-generator.c
index 6c938062de..0dc407dd32 100644
--- a/src/getty-generator/getty-generator.c
+++ b/src/getty-generator/getty-generator.c
@@ -33,19 +33,19 @@
static const char *arg_dest = "/tmp";
static int add_symlink(const char *fservice, const char *tservice) {
- char *from = NULL, *to = NULL;
+ _cleanup_free_ char *from = NULL, *to = NULL;
int r;
assert(fservice);
assert(tservice);
from = strappend(SYSTEM_DATA_UNIT_PATH "/", fservice);
- to = strjoin(arg_dest,"/getty.target.wants/", tservice, NULL);
+ if (!from)
+ return log_oom();
- if (!from || !to) {
- r = log_oom();
- goto finish;
- }
+ to = strjoin(arg_dest,"/getty.target.wants/", tservice, NULL);
+ if (!to)
+ return log_oom();
mkdir_parents_label(to, 0755);
@@ -53,24 +53,18 @@ static int add_symlink(const char *fservice, const char *tservice) {
if (r < 0) {
if (errno == EEXIST)
/* In case console=hvc0 is passed this will very likely result in EEXIST */
- r = 0;
+ return 0;
else {
log_error("Failed to create symlink %s: %m", to);
- r = -errno;
+ return -errno;
}
}
-finish:
-
- free(from);
- free(to);
-
- return r;
+ return 0;
}
static int add_serial_getty(const char *tty) {
- char *n;
- int r;
+ _cleanup_free_ char *n = NULL;
assert(tty);
@@ -80,10 +74,7 @@ static int add_serial_getty(const char *tty) {
if (!n)
return log_oom();
- r = add_symlink("serial-getty@.service", n);
- free(n);
-
- return r;
+ return add_symlink("serial-getty@.service", n);
}
int main(int argc, char *argv[]) {
@@ -93,8 +84,7 @@ int main(int argc, char *argv[]) {
"xvc0\0"
"hvsi0\0";
- int r = EXIT_SUCCESS;
- char *active;
+ _cleanup_free_ char *active = NULL;
const char *j;
if (argc > 1 && argc != 4) {
@@ -115,10 +105,10 @@ int main(int argc, char *argv[]) {
log_debug("Automatically adding console shell.");
if (add_symlink("console-getty.service", "console-getty.service") < 0)
- r = EXIT_FAILURE;
+ return EXIT_FAILURE;
/* Don't add any further magic if we are in a container */
- goto finish;
+ return EXIT_SUCCESS;
}
if (read_one_line_file("/sys/class/tty/console/active", &active) >= 0) {
@@ -128,63 +118,43 @@ int main(int argc, char *argv[]) {
/* Automatically add in a serial getty on all active
* kernel consoles */
FOREACH_WORD(w, l, active, state) {
- char *tty;
- int k;
+ _cleanup_free_ char *tty = NULL;
tty = strndup(w, l);
if (!tty) {
- log_oom();
- free(active);
- r = EXIT_FAILURE;
- goto finish;
+ log_oom();
+ return EXIT_FAILURE;
}
- if (isempty(tty) || tty_is_vc(tty)) {
- free(tty);
+ if (isempty(tty) || tty_is_vc(tty))
continue;
- }
/* We assume that gettys on virtual terminals are
* started via manual configuration and do this magic
* only for non-VC terminals. */
- k = add_serial_getty(tty);
-
- if (k < 0) {
- free(tty);
- free(active);
- r = EXIT_FAILURE;
- goto finish;
- }
+ if (add_serial_getty(tty) < 0)
+ return EXIT_FAILURE;
}
- free(active);
}
/* Automatically add in a serial getty on the first
* virtualizer console */
NULSTR_FOREACH(j, virtualization_consoles) {
- char *p;
- int k;
+ _cleanup_free_ char *p = NULL;
- if (asprintf(&p, "/sys/class/tty/%s", j) < 0) {
+ p = strappend("/sys/class/tty/", j);
+ if (!p) {
log_oom();
- r = EXIT_FAILURE;
- goto finish;
+ return EXIT_FAILURE;
}
- k = access(p, F_OK);
- free(p);
-
- if (k < 0)
+ if (access(p, F_OK) < 0)
continue;
- k = add_serial_getty(j);
- if (k < 0) {
- r = EXIT_FAILURE;
- goto finish;
- }
+ if (add_serial_getty(j) < 0)
+ return EXIT_FAILURE;
}
-finish:
- return r;
+ return EXIT_SUCCESS;
}