util: introduce waitpid_loop()

fixme

@@ -3,8 +3,6 @@
 * read /etc/locale, and export LANG= and friends to started services
   allow overwrite of setting by kernel commandline: locale.LANG=, ...
 
-* ABI: tcpwrap "legacy", disable D-Bus export if not compiled-in
-
 * oneshot services which do not remain: 'exited' instead of 'dead'?
   it should be visible in 'systemctl' that they have been run
 
@@ -88,6 +86,16 @@
 
 * support dbus introspection in mid-level object paths, i.e. in /org/freedesktop/systemd/units/.
 
+* default.target auch in /lib linken
+
+* systemctl auto-pager a la git
+
+* console setup
+
+* fsck setup
+
+* merge CK
+
 External:
 
 * place /etc/inittab with explaining blurb.
@@ -100,8 +108,6 @@ External:
 
 * make sysinit honour forcefsck/fastboot from the kernel command line fsck.mode=auto|force|skip
 
-* ck logging, ssd readahead
-
 * pam: fix double sudo session cleanup:
   http://www.gratisoft.us/bugzilla/show_bug.cgi?id=421
 

src/kmod-setup.c

@@ -76,17 +76,8 @@ int kmod_setup(void) {
         if (r < 0)
                 return r;
 
-        for (;;) {
-                if (waitpid(pid, &status, 0) < 0) {
-
-                        if (errno == EINTR)
-                                continue;
-
-                        return -errno;
-                }
-
-                break;
-        }
+        if ((r = waitpid_loop(pid, &status)) < 0)
+                return -errno;
 
         if (WIFEXITED(status)) {
                 if (WEXITSTATUS(status) != 0) {

src/util.c

@@ -49,6 +49,7 @@
 #include <netinet/ip.h>
 #include <linux/kd.h>
 #include <dlfcn.h>
+#include <sys/wait.h>
 
 #include "macro.h"
 #include "util.h"
@@ -2849,18 +2850,18 @@ void status_welcome(void) {
         free(r);
 
 #elif defined(TARGET_DEBIAN)
-	char *r;
+        char *r;
 
-	if (read_one_line_file("/etc/debian_version", &r) < 0)
-		return;
+        if (read_one_line_file("/etc/debian_version", &r) < 0)
+                return;
 
-	truncate_nl(r);
+        truncate_nl(r);
 
-	status_printf("Welcome to Debian \x1B[1;31m%s\x1B[0m!\n", r); /* Light Red for Debian */
+        status_printf("Welcome to Debian \x1B[1;31m%s\x1B[0m!\n", r); /* Light Red for Debian */
 
-	free(r);
+        free(r);
 #elif defined(TARGET_ARCH)
-	status_printf("Welcome to \x1B[1;36mArch Linux\x1B[0m!\n"); /* Cyan for Arch */
+        status_printf("Welcome to \x1B[1;36mArch Linux\x1B[0m!\n"); /* Cyan for Arch */
 #else
 #warning "You probably should add a welcome text logic here."
 #endif
@@ -3100,6 +3101,23 @@ char *unquote(const char *s, const char quote) {
         return strdup(s);
 }
 
+int waitpid_loop(pid_t pid, int *status) {
+        assert(pid >= 1);
+        assert(status);
+
+        for (;;) {
+                if (waitpid(pid, status, 0) < 0) {
+
+                        if (errno == EINTR)
+                                continue;
+
+                        return -errno;
+                }
+
+                return 0;
+        }
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",

src/util.h

@@ -345,6 +345,8 @@ int touch(const char *path);
 
 char *unquote(const char *s, const char quote);
 
+int waitpid_loop(pid_t pid, int *status);
+
 #define NULSTR_FOREACH(i, l) \
         for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)