| /* |
| * setfattr - set extended attributes of filesystem objects. |
| * |
| * Copyright (C) 2017 by Denys Vlasenko <vda.linux@googlemail.com> |
| * |
| * Licensed under GPLv2, see file LICENSE in this source tree. |
| */ |
| //config:config SETFATTR |
| //config: bool "setfattr (3.7 kb)" |
| //config: default y |
| //config: help |
| //config: Set/delete extended attributes on files |
| |
| //applet:IF_SETFATTR(APPLET_NOEXEC(setfattr, setfattr, BB_DIR_USR_BIN, BB_SUID_DROP, setfattr)) |
| |
| //kbuild:lib-$(CONFIG_SETFATTR) += setfattr.o |
| |
| #include <sys/xattr.h> |
| #include "libbb.h" |
| |
| //usage:#define setfattr_trivial_usage |
| //usage: "[-h] -n|-x ATTR [-v VALUE] FILE..." |
| //usage:#define setfattr_full_usage "\n\n" |
| //usage: "Set extended attributes" |
| //usage: "\n" |
| //usage: "\n -h Do not follow symlinks" |
| //usage: "\n -x ATTR Remove attribute ATTR" |
| //usage: "\n -n ATTR Set attribute ATTR to VALUE" |
| //usage: "\n -v VALUE (default: empty)" |
| int setfattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int setfattr_main(int argc UNUSED_PARAM, char **argv) |
| { |
| const char *name; |
| const char *value = ""; |
| int status; |
| int opt; |
| enum { |
| OPT_h = (1 << 0), |
| OPT_x = (1 << 1), |
| }; |
| |
| opt = getopt32(argv, "^" |
| "hx:n:v:" |
| /* Min one arg, either -x or -n is a must, -x does not allow -v */ |
| "\0" "-1:x:n:n--x:x--nv:v--x" |
| , &name, &name, &value |
| ); |
| argv += optind; |
| |
| status = EXIT_SUCCESS; |
| do { |
| int r; |
| if (opt & OPT_x) |
| r = ((opt & OPT_h) ? lremovexattr : removexattr)(*argv, name); |
| else { |
| r = ((opt & OPT_h) ? lsetxattr : setxattr)( |
| *argv, name, |
| value, strlen(value), /*flags:*/ 0 |
| ); |
| } |
| if (r) { |
| bb_simple_perror_msg(*argv); |
| status = EXIT_FAILURE; |
| } |
| } while (*++argv); |
| |
| return status; |
| } |