SDL_sysurl.c File Reference

#include "../SDL_sysurl.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include <errno.h>

Include dependency graph for SDL_sysurl.c:

Go to the source code of this file.

Functions
int	SDL_SYS_OpenURL (const char *url)

Function Documentation

SDL_SYS_OpenURL()

int SDL_SYS_OpenURL

(

const char *

url

)

Definition at line 32 of file SDL_sysurl.c.

{
    const pid_t pid1 = fork();
    if (pid1 == 0) {  /* child process */
        /* Notice this is vfork and not fork! */
        const pid_t pid2 = vfork();
        if (pid2 == 0) {  /* Grandchild process will try to launch the url */
            execlp("xdg-open", "xdg-open", url, NULL);
            _exit(EXIT_FAILURE);
        } else if (pid2 < 0) {   /* There was an error forking */
            _exit(EXIT_FAILURE);
        } else {
            /* Child process doesn't wait for possibly-blocking grandchild. */
            _exit(EXIT_SUCCESS);
        }
    } else if (pid1 < 0) {
        return SDL_SetError("fork() failed: %s", strerror(errno));
    } else {
        int status;
        if (waitpid(pid1, &status, 0) == pid1) {
            if (WIFEXITED(status)) {
                 if (WEXITSTATUS(status) == 0) {
                     return 0;  /* success! */
                 } else {
                     return SDL_SetError("xdg-open reported error or failed to launch: %d", WEXITSTATUS(status));
                 }
             } else {
                return SDL_SetError("xdg-open failed for some reason");
             }
        } else {
            return SDL_SetError("Waiting on xdg-open failed: %s", strerror(errno));
        }
    }
 
    return 0;
}

References NULL, and SDL_SetError.