| /* vi: set sw=4 ts=4: */ |
| /* |
| * cat implementation for busybox |
| * |
| * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> |
| * |
| * Licensed under GPLv2, see file License in this tarball for details. |
| */ |
| |
| /* BB_AUDIT SUSv3 compliant */ |
| /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */ |
| |
| #include "busybox.h" |
| |
| /* This is a NOFORK applet. Be very careful! */ |
| |
| |
| int bb_cat(char **argv) |
| { |
| static const char *const argv_dash[] = { "-", NULL }; |
| |
| int fd; |
| int retval = EXIT_SUCCESS; |
| |
| if (!*argv) |
| argv = (char**) &argv_dash; |
| |
| do { |
| fd = STDIN_FILENO; |
| if (!LONE_DASH(*argv)) |
| fd = open_or_warn(*argv, O_RDONLY); |
| if (fd >= 0) { |
| /* This is not an xfunc - never exits */ |
| off_t r = bb_copyfd_eof(fd, STDOUT_FILENO); |
| if (fd != STDIN_FILENO) |
| close(fd); |
| if (r >= 0) |
| continue; |
| } |
| retval = EXIT_FAILURE; |
| } while (*++argv); |
| |
| return retval; |
| } |
| |
| int cat_main(int argc, char **argv); |
| int cat_main(int argc, char **argv) |
| { |
| getopt32(argc, argv, "u"); |
| argv += optind; |
| return bb_cat(argv); |
| } |