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🆕 在shell中启动另一个程序

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This commit is contained in:
fslongjin
2022-06-07 23:18:26 +08:00
parent 129d24296b
commit 4e04ab9eee
14 changed files with 109 additions and 77 deletions
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11
user/apps/shell/cmd.c
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@ -369,16 +369,15 @@ int shell_cmd_exec(int argc, char **argv)
{
pid_t pid = fork();
int retval = 0;
printf(" pid=%d \n",pid);
// printf(" pid=%d \n",pid);
while(1);
if (pid == 0)
{
printf("child proc\n");
// printf("child proc\n");
// 子进程
int path_len = 0;
char *file_path = get_target_filepath(argv[1], &path_len);
printf("before execv, path=%s\n", file_path);
// printf("before execv, path=%s, argc=%d\n", file_path, argc);
execv(file_path, argv);
free(argv);
while(1);
@ -387,13 +386,13 @@ int shell_cmd_exec(int argc, char **argv)
else
{
printf("parent process wait for pid:[ %d ]\n", pid);
while(1);
waitpid(pid, &retval, 0);
printf("parent process wait pid [ %d ], exit code=%d\n", pid, retval);
free(argv);
}
while(1);
}
/**