From 3a9241add947cb6d24b5de7a8927517426a78795 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Sat, 25 Aug 2012 14:25:22 -0500 Subject: Move commands into "posix", "lsb", and "other" menus/directories. --- toys/posix/chmod.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 toys/posix/chmod.c (limited to 'toys/posix/chmod.c') diff --git a/toys/posix/chmod.c b/toys/posix/chmod.c new file mode 100644 index 00000000..e41598c1 --- /dev/null +++ b/toys/posix/chmod.c @@ -0,0 +1,72 @@ +/* vi: set sw=4 ts=4: + * + * chmod.c - Change file mode bits + * + * Copyright 2012 Rob Landley + * + * See http://pubs.opengroup.org/onlinepubs/009695399/utilities/chmod.html + * + +USE_CHMOD(NEWTOY(chmod, "<2?vR", TOYFLAG_BIN)) + +config CHMOD + bool "chmod" + default y + help + usage: chmod [-R] MODE FILE... + + Change mode of listed file[s] (recursively with -R). + + MODE can be (comma-separated) stanzas: [ugoa][+-=][rwxstXugo] + + Stanzas are applied in order: For each category (u = user, + g = group, o = other, a = all three, if none specified default is a), + set (+), clear (-), or copy (=), r = read, w = write, x = execute. + s = u+s = suid, g+s = sgid, o+s = sticky. (+t is an alias for o+s). + suid/sgid: execute as the user/group who owns the file. + sticky: can't delete files you don't own out of this directory + X = x for directories or if any category already has x set. + + Or MODE can be an octal value up to 7777 ug uuugggooo top + + bit 1 = o+x, bit 1<<8 = u+w, 1<<11 = g+1 sstrwxrwxrwx bottom + + Examples: + chmod u+w file - allow owner of "file" to write to it. + chmod 744 file - user can read/write/execute, everyone else read only +*/ + +#include "toys.h" + +DEFINE_GLOBALS( + char *mode; +) + +#define TT this.chmod + +#define FLAG_R 1 +#define FLAG_v 2 + +int do_chmod(struct dirtree *try) +{ + mode_t mode; + + if (!dirtree_notdotdot(try)) return 0; + + mode = string_to_mode(TT.mode, try->st.st_mode); + if (toys.optflags & FLAG_v) { + char *s = dirtree_path(try, 0); + printf("chmod '%s' to %04o\n", s, mode); + free(s); + } + wfchmodat(dirtree_parentfd(try), try->name, mode); + + return (toys.optflags & FLAG_R) ? DIRTREE_RECURSE : 0; +} + +void chmod_main(void) +{ + TT.mode = *toys.optargs; + char **file; + + for (file = toys.optargs+1; *file; file++) dirtree_read(*file, do_chmod); +} -- cgit v1.2.3