JustForFun
全部博文（241）
发布时间：2020-10-05 23:24:52
fs/目录下的read_write.cSYSCALL_DEFINE3(write, unsigned int, fd, const char __user *, buf, size_t, count){ struct file *file; ssize_t ret = -EBADF; int fput_needed; file = fget_light(fd, &fput_ne.........【阅读全文】
发布时间：2020-10-05 23:23:01
fs/fcntl.c SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, unsigned long, arg){struct file *filp;long err = -EBADF;filp = fget(fd);if (!filp)goto out;err = security_file_fcntl(filp, cmd, arg);if (err) {fput(filp);return err;}.........【阅读全文】
