diff options
| -rw-r--r-- | usr.bin/Makefile | 1 | ||||
| -rw-r--r-- | usr.bin/cat/Makefile | 6 | ||||
| -rw-r--r-- | usr.bin/cat/cat.c | 66 |
3 files changed, 73 insertions, 0 deletions
diff --git a/usr.bin/Makefile b/usr.bin/Makefile index 0dd6b84..18f4b47 100644 --- a/usr.bin/Makefile +++ b/usr.bin/Makefile @@ -14,3 +14,4 @@ all: make -C beep/ $(ARGS) make -C mrow/ $(ARGS) make -C elfdump/ $(ARGS) + make -C cat/ $(ARGS) diff --git a/usr.bin/cat/Makefile b/usr.bin/cat/Makefile new file mode 100644 index 0000000..4ecfea7 --- /dev/null +++ b/usr.bin/cat/Makefile @@ -0,0 +1,6 @@ +include user.mk + +CFILES = $(shell find . -name "*.c") + +$(ROOT)/base/usr/bin/cat: + gcc $(CFILES) -o $@ $(INTERNAL_CFLAGS) diff --git a/usr.bin/cat/cat.c b/usr.bin/cat/cat.c new file mode 100644 index 0000000..d40986b --- /dev/null +++ b/usr.bin/cat/cat.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +/* + * TODO FIXME (BUG): Print line by line (fix line clobbering issue) + */ +static void +cat(const char *pathname) +{ + char buf[4096]; + int fd; + + fd = open(pathname, O_RDONLY); + if (fd < 0) { + printf("cat: could not open %s\n", pathname); + return; + } + + read(fd, buf, sizeof(buf)); + printf("%s", buf); + close(fd); +} + +int +main(int argc, char **argv) +{ + for (size_t i = 1; i < argc; ++i) { + cat(argv[i]); + } + + return 0; +} + |