diff options
Diffstat (limited to 'miscutils')
-rw-r--r-- | miscutils/setfattr.c | 68 |
1 files changed, 68 insertions, 0 deletions
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 <vda.linux@googlemail.com> + * + * 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; +} |