69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* setfattr - set extended attributes of filesystem objects.
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*
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* Copyright (C) 2017 by Denys Vlasenko <vda.linux@googlemail.com>
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//config:config SETFATTR
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//config: bool "setfattr (3.6 kb)"
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//config: default y
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//config: help
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//config: Set/delete extended attributes on files
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//applet:IF_SETFATTR(APPLET_NOEXEC(setfattr, setfattr, BB_DIR_USR_BIN, BB_SUID_DROP, setfattr))
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//kbuild:lib-$(CONFIG_SETFATTR) += setfattr.o
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#include <sys/xattr.h>
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#include "libbb.h"
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//usage:#define setfattr_trivial_usage
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//usage: "[-h] -n|-x ATTR [-v VALUE] FILE..."
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//usage:#define setfattr_full_usage "\n\n"
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//usage: "Set extended attributes"
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//usage: "\n"
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//usage: "\n -h Do not follow symlinks"
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//usage: "\n -x ATTR Remove attribute ATTR"
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//usage: "\n -n ATTR Set attribute ATTR to VALUE"
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//usage: "\n -v VALUE (default: empty)"
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int setfattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int setfattr_main(int argc UNUSED_PARAM, char **argv)
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{
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const char *name;
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const char *value = "";
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int status;
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int opt;
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enum {
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OPT_h = (1 << 0),
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OPT_x = (1 << 1),
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};
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opt = getopt32(argv, "^"
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"hx:n:v:"
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/* Min one arg, either -x or -n is a must, -x does not allow -v */
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"\0" "-1:x:n:n--x:x--nv:v--x"
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, &name, &name, &value
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);
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argv += optind;
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status = EXIT_SUCCESS;
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do {
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int r;
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if (opt & OPT_x)
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r = ((opt & OPT_h) ? lremovexattr : removexattr)(*argv, name);
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else {
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r = ((opt & OPT_h) ? lsetxattr : setxattr)(
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*argv, name,
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value, strlen(value), /*flags:*/ 0
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);
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}
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if (r) {
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bb_simple_perror_msg(*argv);
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status = EXIT_FAILURE;
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}
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} while (*++argv);
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return status;
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}
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