From 65966ded0cc15c5966c6568cf0ff2f2bbe1fc29a Mon Sep 17 00:00:00 2001 From: Stefan Zabka Date: Sun, 24 May 2020 12:09:46 +0200 Subject: Big remodelling --- 02_exercise/beispiele/pipe_example/Makefile | 18 --------- 02_exercise/beispiele/pipe_example/pipe.c | 60 ----------------------------- 2 files changed, 78 deletions(-) delete mode 100644 02_exercise/beispiele/pipe_example/Makefile delete mode 100644 02_exercise/beispiele/pipe_example/pipe.c (limited to '02_exercise/beispiele/pipe_example') diff --git a/02_exercise/beispiele/pipe_example/Makefile b/02_exercise/beispiele/pipe_example/Makefile deleted file mode 100644 index d69473e..0000000 --- a/02_exercise/beispiele/pipe_example/Makefile +++ /dev/null @@ -1,18 +0,0 @@ -#!/usr/bin/make -.SUFFIXES: - -CFLAGS = -c -Os -Wall -Werror - -%.o: %.c - $(CC) $(CFLAGS) $^ -o $@ - -%: %.o - $(CC) -o $@ $^ - -all: pipe - -run: all - ./pipe - -clean: - $(RM) $(RMFILES) pipe diff --git a/02_exercise/beispiele/pipe_example/pipe.c b/02_exercise/beispiele/pipe_example/pipe.c deleted file mode 100644 index 422e4d5..0000000 --- a/02_exercise/beispiele/pipe_example/pipe.c +++ /dev/null @@ -1,60 +0,0 @@ -#include -#include -#include -#include - -#define BUF_SIZE 32 - -int pipe_fds[2]; - -void term(const char *msg) { - if (msg) { - fprintf(stderr, "Error: %s\n", msg); - fflush(stderr); - } - - int close_fail = 0; - int ret = close(pipe_fds[0]); - - if (ret < 0) { - fprintf(stderr, "Error: Couldn't close reading end of pipe\n"); - fflush(stderr); - close_fail = 1; - } - - ret = close(pipe_fds[1]); - - if (ret < 0) { - fprintf(stderr, "Error: Couldn't close writing end of pipe\n"); - fflush(stderr); - close_fail = 1; - } - - exit((msg || close_fail) ? EXIT_FAILURE : EXIT_SUCCESS); -} - -int main(void) { - int ret = pipe(pipe_fds); - - if (ret < 0) - term("Couldn't create pipe"); - - char out_buf[] = "hello"; - ret = write(pipe_fds[1], out_buf, strlen(out_buf) + 1); - - if (ret < 0) - term("Couldn't write to pipe"); - - printf("send msg: %s\n", out_buf); - - char in_buf[BUF_SIZE]; - memset(in_buf, 0, BUF_SIZE); - - ret = read(pipe_fds[0], in_buf, BUF_SIZE - 1); - - if (ret < 0) - term("Couldn't read from pipe"); - - printf("recv msg: %s\n", in_buf); - return 0; -} -- cgit v1.2.3-54-g00ecf