86 lines
2.3 KiB
Diff
86 lines
2.3 KiB
Diff
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diff -p -u -r1.7 Config.in
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--- busybox-1.00/debianutils/Config.in 15 Mar 2004 08:28:24 -0000 1.7
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+++ busybox-1.00-patched/debianutils/Config.in 16 Nov 2004 11:46:41 -0000
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@@ -24,6 +24,13 @@ config CONFIG_READLINK
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This program reads a symbolic link and returns the name
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of the file it points to
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+config CONFIG_FEATURE_READLINK_FOLLOW
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+ bool " Enable canonicalization by following all symlinks (-f)"
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+ default n
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+ depends on CONFIG_READLINK
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+ help
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+ Enable the readlink option (-f).
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+
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config CONFIG_RUN_PARTS
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bool "run-parts"
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default n
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diff -p -u -r1.2 readlink.c
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--- busybox-1.00/debianutils/readlink.c 19 Mar 2003 09:11:41 -0000 1.2
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+++ busybox-1.00-patched/debianutils/readlink.c 16 Nov 2004 11:46:41 -0000
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@@ -23,18 +23,38 @@
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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+#include <getopt.h>
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#include "busybox.h"
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+#ifdef CONFIG_FEATURE_READLINK_FOLLOW
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+# define READLINK_FOLLOW "f"
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+# define READLINK_FLAG_f (1 << 0)
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+#else
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+# define READLINK_FOLLOW ""
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+#endif
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+
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+static const char readlink_options[] = READLINK_FOLLOW;
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+
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int readlink_main(int argc, char **argv)
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{
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char *buf = NULL;
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+ unsigned long opt = bb_getopt_ulflags(argc, argv, readlink_options);
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+#ifdef CONFIG_FEATURE_READLINK_FOLLOW
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+ RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
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+#endif
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/* no options, no getopt */
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- if (argc != 2)
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+ if (optind + 1 != argc)
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bb_show_usage();
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- buf = xreadlink(argv[1]);
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+#ifdef CONFIG_FEATURE_READLINK_FOLLOW
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+ if (opt & READLINK_FLAG_f) {
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+ buf = realpath(argv[optind], resolved_path);
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+ } else
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+#endif
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+ buf = xreadlink(argv[optind]);
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+
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if (!buf)
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return EXIT_FAILURE;
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puts(buf);
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diff -p -u -r1.222 usage.h
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--- busybox-1.00/include/usage.h 14 Sep 2004 16:23:56 -0000 1.222
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+++ busybox-1.00-patched/include/usage.h 16 Nov 2004 11:46:42 -0000
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@@ -1985,10 +1985,18 @@
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"\t-s\tSet the system date and time (default).\n" \
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"\t-p\tPrint the date and time."
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+#ifdef CONFIG_FEATURE_READLINK_FOLLOW
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+#define USAGE_READLINK_FOLLOW(a) a
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+#else
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+#define USAGE_READLINK_FOLLOW(a)
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+#endif
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+
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#define readlink_trivial_usage \
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- ""
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+ USAGE_READLINK_FOLLOW("[-f] ") "FILE"
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#define readlink_full_usage \
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- "Displays the value of a symbolic link."
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+ "Displays the value of a symbolic link." \
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+ USAGE_READLINK_FOLLOW("\n\nOptions:\n" \
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+ "\t-f\tcanonicalize by following all symlinks")
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#define realpath_trivial_usage \
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"pathname ..."
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