mx_util: Add mx_call_external

mariux64 · May 5, 2022 · 0713866 · 0713866
1 parent da60fe7
commit 0713866
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Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/mx_util.c b/mx_util.c
@@ -1315,6 +1315,24 @@ time_t mx_clock_boottime(void) {
     return (ts.tv_sec);
 }
 
+int mx_call_external(char *helper, char **argv) {
+    pid_t pid = fork();
+    if (pid == 0) {
+        execv(helper, argv);
+        mx_log_err("%s: %m", helper);
+        _exit(1);
+    }
+    if (pid == -1)
+        return  -1;
+    int wstatus;
+    waitpid(pid, &wstatus, 0);
+    if (wstatus != 0) {
+        errno = EPROTO;
+        return -1;
+    }
+    return 0;
+}
+
 static ssize_t readall(int fd, char *buf, size_t buflen) {
     ssize_t len = 0;
     while (buflen) {

diff --git a/mx_util.h b/mx_util.h
@@ -180,6 +180,7 @@ void _mx_sort_linked_list(void **list, int (*cmp)(void *o1,void *o2), void ** (*
 
 unsigned long mx_df(const char *path);
 time_t mx_clock_boottime(void);
+int mx_call_external(char *helper, char **argv);
 char *mx_pipe_external(char *args, char **argv);
 
 #endif