2 * FreeBSD install - a package for the installation and maintainance
3 * of non-core utilities.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
17 * This is the package extraction code for the add module.
19 * $FreeBSD: src/usr.sbin/pkg_install/add/extract.c,v 1.42 2004/07/28 07:19:15 kan Exp $
20 * $DragonFly: src/usr.sbin/pkg_install/add/Attic/extract.c,v 1.5 2005/08/28 16:56:12 corecode Exp $
29 #define STARTSTRING "/usr/bin/tar cf -"
31 (((int)strlen(str) + FILENAME_MAX + where_count > maxargs) ||\
32 ((int)strlen(str) + FILENAME_MAX + perm_count > maxargs))
34 #define PUSHOUT(todir) /* push out string */ \
35 if (where_count > (int)sizeof(STARTSTRING)-1) { \
36 strcat(where_args, "|/usr/bin/tar --unlink -xpf - -C "); \
37 strcat(where_args, todir); \
38 if (system(where_args)) { \
40 errx(2, "%s: can not invoke %ld byte tar pipeline: %s", \
41 __func__, (long)strlen(where_args), where_args); \
43 strcpy(where_args, STARTSTRING); \
44 where_count = sizeof(STARTSTRING)-1; \
47 apply_perms(todir, perm_args); \
53 rollback(const char *name, const char *home, PackingList start, PackingList stop)
56 char try[FILENAME_MAX], bup[FILENAME_MAX];
61 for (q = start; q != stop; q = q->next) {
62 if (q->type == PLIST_FILE) {
63 snprintf(try, FILENAME_MAX, "%s/%s", dir, q->name);
64 if (make_preserve_name(bup, FILENAME_MAX, name, try) && fexists(bup)) {
68 warnx("rollback: unable to rename %s back to %s", bup, try);
71 else if (q->type == PLIST_CWD) {
72 if (strcmp(q->name, "."))
73 dir = dn = fake_chroot(q->name);
82 #define add_char(buf, len, pos, ch) do {\
83 if ((pos) < (len)) { \
85 buf[(pos) + 1] = '\0'; \
91 add_arg(char *buf, int len, const char *str)
95 add_char(buf, len, i, ' ');
96 for (; *str != '\0'; ++str) {
97 if (!isalnum(*str) && *str != '/' && *str != '.' && *str != '-')
98 add_char(buf, len, i, '\\');
99 add_char(buf, len, i, *str);
105 extract_plist(const char *home, Package *pkg)
107 PackingList p = pkg->head;
109 char *where_args, *perm_args, *last_chdir;
111 int maxargs, where_count = 0, perm_count = 0, add_count;
114 maxargs = sysconf(_SC_ARG_MAX) / 2; /* Just use half the argument space */
115 where_args = alloca(maxargs);
118 errx(2, "%s: can't get argument list space", __func__);
120 perm_args = alloca(maxargs);
123 errx(2, "%s: can't get argument list space", __func__);
126 strcpy(where_args, STARTSTRING);
127 where_count = sizeof(STARTSTRING)-1;
131 preserve = find_plist_option(pkg, "preserve") ? TRUE : FALSE;
133 /* Reset the world */
138 Directory = (char *)home;
142 char cmd[FILENAME_MAX];
148 printf("extract: Package name is %s\n", p->name);
154 printf("extract: %s/%s\n", Directory, p->name);
156 char try[FILENAME_MAX];
158 /* first try to rename it into place */
159 snprintf(try, FILENAME_MAX, "%s/%s", Directory, p->name);
161 chflags(try, 0); /* XXX hack - if truly immutable, rename fails */
162 if (preserve && PkgName) {
163 char pf[FILENAME_MAX];
165 if (make_preserve_name(pf, FILENAME_MAX, PkgName, try)) {
166 if (rename(try, pf)) {
168 "unable to back up %s to %s, aborting pkg_add",
170 rollback(PkgName, home, pkg->head, p);
176 if (rename(p->name, try) == 0) {
177 /* try to add to list of perms to be changed and run in bulk. */
178 if (p->name[0] == '/' || TOOBIG(p->name)) {
181 add_count = add_arg(&perm_args[perm_count], maxargs - perm_count, p->name);
182 if (add_count < 0 || add_count >= maxargs - perm_count) {
184 errx(2, "%s: oops, miscounted strings!", __func__);
186 perm_count += add_count;
189 /* rename failed, try copying with a big tar command */
190 if (last_chdir != Directory) {
191 if (last_chdir == NULL) {
196 last_chdir = Directory;
198 else if (p->name[0] == '/' || TOOBIG(p->name)) {
201 add_count = add_arg(&where_args[where_count], maxargs - where_count, p->name);
202 if (add_count < 0 || add_count >= maxargs - where_count) {
204 errx(2, "%s: oops, miscounted strings!", __func__);
206 where_count += add_count;
207 add_count = add_arg(&perm_args[perm_count], maxargs - perm_count, p->name);
208 if (add_count < 0 || add_count >= maxargs - perm_count) {
210 errx(2, "%s: oops, miscounted strings!", __func__);
212 perm_count += add_count;
219 char *dn2 = fake_chroot(p->name);
222 printf("extract: CWD to %s\n", dn2);
224 if (strcmp(dn2, ".")) {
225 if (!Fake && make_hierarchy(dn2) == FAIL) {
227 errx(2, "%s: unable to cwd to '%s'", __func__, dn2);
231 Directory = dn = dn2;
234 Directory = (char *)home;
241 if ((strstr(p->name, "%B") || strstr(p->name, "%F") ||
242 strstr(p->name, "%f")) && last_file == NULL) {
244 errx(2, "%s: no last file specified for '%s' command",
247 if (strstr(p->name, "%D") && Directory == NULL) {
249 errx(2, "%s: no directory specified for '%s' command",
252 format_cmd(cmd, FILENAME_MAX, p->name, Directory, last_file);
255 printf("extract: execute '%s'\n", cmd);
256 if (!Fake && system(cmd))
257 warnx("command '%s' failed", cmd);