From b278ac0e607aa971c46706be63c580a2fd88dd56 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Fri, 8 Sep 2017 20:55:59 +0200 Subject: setfattr: new applet function old new delta setfattr_main - 189 +189 packed_usage 31516 31588 +72 setxattr - 53 +53 lsetxattr - 53 +53 removexattr - 37 +37 lremovexattr - 37 +37 applet_names 2649 2658 +9 find_applet_by_name 124 128 +4 applet_main 1532 1536 +4 ------------------------------------------------------------------------------ (add/remove: 7/0 grow/shrink: 4/0 up/down: 458/0) Total: 458 bytes Signed-off-by: Denys Vlasenko --- miscutils/setfattr.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 miscutils/setfattr.c diff --git a/miscutils/setfattr.c b/miscutils/setfattr.c new file mode 100644 index 000000000..f0ef227cb --- /dev/null +++ b/miscutils/setfattr.c @@ -0,0 +1,68 @@ +/* + * setfattr - set extended attributes of filesystem objects. + * + * Copyright (C) 2017 by Denys Vlasenko + * + * Licensed under GPLv2, see file LICENSE in this source tree. + */ +//config:config SETFATTR +//config: bool "setfattr" +//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 +#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; +} -- cgit v1.2.3