b278ac0e6
Denys Vlasenko
2017-09-08
Subject
setfattr: new applet
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Commit Diff GitHub →
miscutils/setfattr.c+68 -0
| @@ -0,0 +1,68 @@ | |
| + | /* |
| + | * setfattr - set extended attributes of filesystem objects. |
| + | * |
| + | * Copyright (C) 2017 by Denys Vlasenko <[email protected]> |
| + | * |
| + | * 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 <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; |
| + | } |