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50f7f446ec
cat: stop using stdio.h opens libbb: introduce & use open[3]_or_warn function old new delta open3_or_warn - 54 +54 bb_cat 115 144 +29 open_or_warn - 25 +25 unlzma 2404 2412 +8 chattr_main 334 339 +5 xstrtoul_range_sfx 251 255 +4 telnet_main 1514 1510 -4 static.opt 4 - -4 qgravechar 122 118 -4 fuser_add_pid 61 54 -7 fuser_add_inode 154 147 -7 writeFileToTarball 1542 1534 -8 refresh 1156 1148 -8 do_show 856 846 -10 read_leases 212 200 -12 setup_redirects 236 222 -14 iproute_list_or_flush 1582 1568 -14 read_config 427 411 -16 write_leases 284 264 -20 hash_file 338 318 -20 copy_file 1760 1740 -20 do_iproute 2610 2588 -22 bb_full_fd_action 320 269 -51 open_to_or_warn 103 49 -54 fuser_main 1660 1596 -64 .rodata 131160 131096 -64 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 4/19 up/down: 125/-423) Total: -298 bytes
53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* cat implementation for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2, see file License in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
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#include "busybox.h"
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/* This is a NOFORK applet. Be very careful! */
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int bb_cat(char **argv)
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{
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static const char *const argv_dash[] = { "-", NULL };
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int fd;
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int retval = EXIT_SUCCESS;
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if (!*argv)
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argv = (char**) &argv_dash;
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do {
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fd = STDIN_FILENO;
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if (!LONE_DASH(*argv))
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fd = open_or_warn(*argv, O_RDONLY);
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if (fd >= 0) {
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/* This is not an xfunc - never exits */
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off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
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if (fd != STDIN_FILENO)
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close(fd);
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if (r >= 0)
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continue;
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}
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retval = EXIT_FAILURE;
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} while (*++argv);
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return retval;
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}
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int cat_main(int argc, char **argv);
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int cat_main(int argc, char **argv)
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{
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getopt32(argc, argv, "u");
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argv += optind;
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return bb_cat(argv);
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}
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