Contents of /trunk/mkinitrd-magellan/busybox/coreutils/cat.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1406 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * cat implementation for busybox |
4 | * |
5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2, see file License in this tarball for details. |
8 | */ |
9 | |
10 | /* BB_AUDIT SUSv3 compliant */ |
11 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */ |
12 | |
13 | //kbuild:lib-$(CONFIG_CAT) += cat.o |
14 | //kbuild:lib-$(CONFIG_MORE) += cat.o # more uses it if stdout isn't a tty |
15 | //kbuild:lib-$(CONFIG_LESS) += cat.o # less too |
16 | //kbuild:lib-$(CONFIG_CRONTAB) += cat.o # crontab -l |
17 | |
18 | //config:config CAT |
19 | //config: bool "cat" |
20 | //config: default y |
21 | //config: help |
22 | //config: cat is used to concatenate files and print them to the standard |
23 | //config: output. Enable this option if you wish to enable the 'cat' utility. |
24 | |
25 | #include "libbb.h" |
26 | |
27 | /* This is a NOFORK applet. Be very careful! */ |
28 | |
29 | |
30 | int bb_cat(char **argv) |
31 | { |
32 | int fd; |
33 | int retval = EXIT_SUCCESS; |
34 | |
35 | if (!*argv) |
36 | argv = (char**) &bb_argv_dash; |
37 | |
38 | do { |
39 | fd = open_or_warn_stdin(*argv); |
40 | if (fd >= 0) { |
41 | /* This is not a xfunc - never exits */ |
42 | off_t r = bb_copyfd_eof(fd, STDOUT_FILENO); |
43 | if (fd != STDIN_FILENO) |
44 | close(fd); |
45 | if (r >= 0) |
46 | continue; |
47 | } |
48 | retval = EXIT_FAILURE; |
49 | } while (*++argv); |
50 | |
51 | return retval; |
52 | } |
53 | |
54 | int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
55 | int cat_main(int argc UNUSED_PARAM, char **argv) |
56 | { |
57 | getopt32(argv, "u"); |
58 | argv += optind; |
59 | return bb_cat(argv); |
60 | } |