diff options
Diffstat (limited to 'src/user/sh.cc')
| -rw-r--r-- | src/user/sh.cc | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/src/user/sh.cc b/src/user/sh.cc index b4122f7..760f29e 100644 --- a/src/user/sh.cc +++ b/src/user/sh.cc @@ -67,11 +67,26 @@ struct RedirCommand : public Command void run() override { close(fd); - if (open(file, mode) < 0) + + int newfd = open(file, mode); + + if (newfd < 0) { printf("open %s failed\n", file); exit(1); } + + if (newfd != fd) + { + + if (dup(newfd) != fd) + { + printf("Redirection failed: could not move fd %d to %d\n", newfd, fd); + exit(1); + } + close(newfd); + } + sub_cmd->run(); } }; @@ -348,15 +363,6 @@ int main() { static char buf[100]; - // int fd; - // while ((fd = open("console", O_RDWR)) >= 0) - // { - // if (fd >= 3) - // { - // close(fd); - // break; - // } - // } printf(ANSI_GREEN"\n[Lume Shell] Welcome! \n"ANSI_RESET); printf(ANSI_YELLOW "[Lume Shell] Start your journey of exploration!"ANSI_RESET); |