cmd/chmod/chmod.c

4  * The contents of this file are subject to the terms of the
50  *  due to the re-use of bits between locking
80 static int	mac;		/* Alternate to argc (for parseargs) */
81 static char	**mav;		/* Alternate to argv (for parseargs) */
83 static char	*ms;		/* Points to the mode argument */
317 	 * modified also, since chmod is supposed to apply group
318 	 * permissions changes to both the acl mask and the
334 	char savedir[PATH_MAX];			/* dir name to restore */
368 	 * modified also, since chmod is supposed to apply group
369 	 * permissions changes to both the acl mask and the
392 	 * a trailing '/' to the path except in the case where
433 		errmsg(2, 255, gettext("can't change back to %s\n"), savedir);
521  *  assumes the existence of a static set of alternates to argc and argv,
534 	 * We add an extra argument slot, in case we need to jam a "--"
664  * is being modified.  According to the chmod(1) manpage, any
665  * change made to the group permissions must be applied to both
667  * set the mask, so this routine needs to make the same change
668  * to the GROUP_OBJ.
679 	 * acl mask to deal with
684 		return;	/* it's just a trivial acl; no need to change it */
724 	void *to, *from;
770 			to = (char *)aclp->acl_aclp +
772 			from = (char *)to + aclp->acl_entry_size;
775 			(void) memmove(to, from, len);
836 			errmsg(1, 0, gettext("Failed to set ACL: %s\n"),
848  * similar to output of ls -/v.
877  * Add an attribute name and boolean value to an nvlist if an action is to be
878  * performed for that attribute.  The nvlist will be used later to set all the
879  * attributes in the nvlist in one operation through a call to setattrat().
882  * attribute's value will be added to the nvlist for that attribute name.  If an
884  * inverse of the attribute's value will be added to the nvlist for that
888  * attribute actions to be performed, otherwise returns NULL.
908 				    "unable to propagate attribute names and"
921  * to set the attributes in one operation.
975 			    "can't change to current working directory\n"));
994  * is "*", then the action is to be performed on all the named attribute files
1093 	 * to set the attributes of the file.
1117 		    "can't change to parent %sdirectory of %s\n"),
1196  * attribute's position in the character array pointed to by attractptr, where
1198  * whether to set (a '+'), clear (a '-'), or leave untouched (a '\0') the
1201  * If the entry is an attribute name, then the A_SET_OP action is to be
1203  * with "no", then the A_INVERSE_OP action is to be performed for this
1205  * through each of the option letters marking the action to be performed for
1208  * Returns 0 if the entry was a valid attribute(s) and the action to be
1258  * will point to an nvlist which contains pairs of attribute names and values
1259  * to be set; attr_nvlist will be NULL if it is a no-op.
1275  *		(to imply the attribute should be cleared).
1276  *	a	all attributes type.  The oper should be applied to all
1311 	 * Create a positional character array to determine a single attribute
1312 	 * operation to be performed, where each index represents the system
1314 	 * to be performed, i.e., a value of '+' means to set the attribute, a
1315 	 * value of '-' means to clear the attribute, and a value of '\0' means
1316 	 * to leave the attribute untouched.  Initially, this positional
1393 		 * attribute is to be set, and a value of '-' will mean the
1394 		 * attribute is to be cleared.  If the value of an attribute
1395 		 * remains '\0', then no action is to be taken on that
1437 			 * read-write attribute so we don't need to worry