1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2003-2007 Tim Kientzle
32  * Short options for cpio.  Please keep this sorted.
42 	int equivalent;	/* Equivalent short option. */
61 	{ "make-directories",		0, 'd' },
62 	{ "no-preserve-owner",		0, OPTION_NO_PRESERVE_OWNER },
64 	{ "numeric-uid-gid",		0, 'n' },
67 	{ "pass-through",		0, 'p' },
68 	{ "preserve-modification-time", 0, 'm' },
69 	{ "preserve-owner",		0, OPTION_PRESERVE_OWNER },
82  * I used to try to select platform-provided getopt() or
86  * overuse of the -W hack in the test harness, which made it rough to
88  * test harness here against GNU cpio as a sanity-check.  Yes,
107 	long_prefix = "--";  in cpio_getopt()
110 	cpio->argument = NULL;  in cpio_getopt()
115 		++cpio->argv;  in cpio_getopt()
116 		--cpio->argc;  in cpio_getopt()
125 		if (cpio->argv[0] == NULL)  in cpio_getopt()
126 			return (-1);  in cpio_getopt()
127 		/* Doesn't start with '-', so no more options. */  in cpio_getopt()
128 		if (cpio->argv[0][0] != '-')  in cpio_getopt()
129 			return (-1);  in cpio_getopt()
130 		/* "--" marks end of options; consume it and return. */  in cpio_getopt()
131 		if (strcmp(cpio->argv[0], "--") == 0) {  in cpio_getopt()
132 			++cpio->argv;  in cpio_getopt()
133 			--cpio->argc;  in cpio_getopt()
134 			return (-1);  in cpio_getopt()
137 		opt_word = *cpio->argv++;  in cpio_getopt()
138 		--cpio->argc;  in cpio_getopt()
139 		if (opt_word[1] == '-') {  in cpio_getopt()
142 			opt_word += 2; /* Skip leading '--' */  in cpio_getopt()
144 			/* Set up short option parser. */  in cpio_getopt()
146 			++opt_word;  /* Skip leading '-' */  in cpio_getopt()
151 	 * We're parsing a group of POSIX-style single-character options.  in cpio_getopt()
154 		/* Peel next option off of a group of short options. */  in cpio_getopt()
171 			/* If arg is run-in, opt_word already points to it. */  in cpio_getopt()
174 				opt_word = *cpio->argv;  in cpio_getopt()
177 					    "Option -%c requires an argument",  in cpio_getopt()
181 				++cpio->argv;  in cpio_getopt()
182 				--cpio->argc;  in cpio_getopt()
186 				long_prefix = "-W "; /* For clearer errors. */  in cpio_getopt()
189 				cpio->argument = opt_word;  in cpio_getopt()
194 	/* We're reading a long option, including -W long=arg convention. */  in cpio_getopt()
202 			optlength = (size_t)(p - opt_word);  in cpio_getopt()
203 			cpio->argument = (char *)(uintptr_t)(p + 1);  in cpio_getopt()
209 		for (popt = cpio_longopts; popt->name != NULL; popt++) {  in cpio_getopt()
210 			/* Short-circuit if first chars don't match. */  in cpio_getopt()
211 			if (popt->name[0] != opt_word[0])  in cpio_getopt()
214 			if (strncmp(opt_word, popt->name, optlength) == 0) {  in cpio_getopt()
218 				if (strlen(popt->name) == optlength) {  in cpio_getopt()
234 			    "Ambiguous option %s%s (matches --%s and --%s)",  in cpio_getopt()
235 			    long_prefix, opt_word, match->name, match2->name);  in cpio_getopt()
240 		if (match->required) {  in cpio_getopt()
242 			if (cpio->argument == NULL) {  in cpio_getopt()
243 				cpio->argument = *cpio->argv;  in cpio_getopt()
244 				if (cpio->argument == NULL) {  in cpio_getopt()
247 					    long_prefix, match->name);  in cpio_getopt()
250 				++cpio->argv;  in cpio_getopt()
251 				--cpio->argc;  in cpio_getopt()
255 			if (cpio->argument != NULL) {  in cpio_getopt()
258 				    long_prefix, match->name);  in cpio_getopt()
262 		return (match->equivalent);  in cpio_getopt()
270  * Parse the argument to the -R or --owner flag.
273  *   <username|uid>    - Override user but not group
274  *   <username>:   - Override both, group is user's default group
275  *   <uid>:    - Override user but not group
276  *   <username|uid>:<groupname|gid> - Override both
277  *   :<groupname|gid>  - Override group but not user
285  * Sets uid/gid return as appropriate, -1 indicates uid/gid not specified.
298 	owner->uid = -1;  in owner_parse()
299 	owner->gid = -1;  in owner_parse()
301 	owner->uname = NULL;  in owner_parse()
302 	owner->gname = NULL;  in owner_parse()
306 		return (-1);  in owner_parse()
311 	 *  u -> first char of username, NULL if no username  in owner_parse()
312 	 *  ue -> first char after username (colon, period, or \0)  in owner_parse()
313 	 *  g -> first char of group name  in owner_parse()
334 		user = malloc(ue - u + 1);  in owner_parse()
337 		memcpy(user, u, ue - u);  in owner_parse()
338 		user[ue - u] = '\0';  in owner_parse()
340 			owner->uid = pwent->pw_uid;  in owner_parse()
341 			owner->uname = strdup(pwent->pw_name);  in owner_parse()
342 			if (owner->uname == NULL) {  in owner_parse()
347 				owner->gid = pwent->pw_gid;  in owner_parse()
351 			owner->uid = (int)strtoul(user, &end, 10);  in owner_parse()
355 				errbuff[sizeof(errbuff) - 1] = '\0';  in owner_parse()
358 				return (-1);  in owner_parse()
367 			owner->gid = grp->gr_gid;  in owner_parse()
368 			owner->gname = strdup(grp->gr_name);  in owner_parse()
369 			if (owner->gname == NULL) {  in owner_parse()
370 				free(owner->uname);  in owner_parse()
371 				owner->uname = NULL;  in owner_parse()
377 			owner->gid = (int)strtoul(g, &end, 10);  in owner_parse()
381 				errbuff[sizeof(errbuff) - 1] = '\0';  in owner_parse()
383 				return (-1);  in owner_parse()
390 	return (-1);  in owner_parse()